895a7dc2aa
* of special values from signal_exception() in interp.c into mips.igen. * * Modified: gencode.c interp.c mips.igen sim-main.h
4850 lines
184 KiB
C
4850 lines
184 KiB
C
/*> gencode.c <*/
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/* Instruction handling support for the MIPS architecture simulator.
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This file is part of the MIPS sim
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THIS SOFTWARE IS NOT COPYRIGHTED
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Cygnus offers the following for use in the public domain. Cygnus
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makes no warranty with regard to the software or it's performance
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and the user accepts the software "AS IS" with all faults.
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CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO
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THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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$Revision$
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$Author$
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$Date$
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*/
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#if 0
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#define DEBUG (1) /* Just for testing */
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#endif
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/* All output sent to stdout is for the simulator engine. All program
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related warnings and errors should be sent to stderr. */
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/* The simulator decode table is constructed this way to allow the
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minimal code required for a particular instruction type to be
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coded. This avoids a large simulator source file, with lots of
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build-time conditionals controlling what code is included. However
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this two-stage process does mean that care must be taken to ensure
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that the correct decoding source is generated for a particular MIPS
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simulator. */
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/* Notes:
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We could provide pipeline modelling by splitting the simulation of
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instructions into seperate bytecodes for each pipeline
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stage. e.g. for the VR4300 each instruction would generate 5
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bytecodes, one for each pipeline stage. The simulator control would
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then insert these into the relevant pipeline slots, and execute a
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complete slots worth of bytecodes. However, the shape of the
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pipeline, and what parts of each instruction are executed in each
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pipeline stage, are different between MIPS implementations. If we
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were to construct a simulator for a particular MIPS architecture
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this would be a good solution.
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To avoid having to provide multiple different pipeline models, a
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simple approach for dealing with the delay slots, and register
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dependencies has been used. The "MIPS IV Instruction Set" document
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(Revision 3.1 - January 1995) details the standard MIPS instruction
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set, and it defines operations in instruction (not pipe-line)
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cycles. This means we only need to worry about a few cases where
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the result is not available until after the next instruction, or
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where registers in the previous two instruction cycles may be
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corrupted. The case for corruption only occurs with HI or LO
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register access, so we can just keep a count within the engine for
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upto two cycles before marking the register as safe. We then only
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need to check the safety flag when performing an update that
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involves the HI or LO register. The only other case is the
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BC1F/BC1T instructions in the FP unit. For ISAs I, II and III there
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must be an instruction between the FP CMP and the BC1[FT]. We can
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perform the same instruction cycle count scheme, so we can raise a
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warning if an attempt is made to access the condition code early
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(NOTE: The hardware does not interlock on this operation, so the
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simulator should just raise a warning).
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For the situations where a result is not available until later, we
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implent a slot to hold pending values. After the PC is incremented,
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and before the instruction is decoded we can execute the required
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register update (or remainder of instruction processing). */
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/* The FP instruction decoding is also provided by this code. The
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instructions are marked as "FP" ones so that we can construct a
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simulator without an FPU if required. Similarly we mark
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instructions as Single or Double precision, since some MIPS
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processors only have single precision FP hardware. */
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/* NOTE: Ideally all state should be passed as parameters. This allows
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a single simulator engine to be used for multiple concurrent
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simulations. More importantly, if a suitably powerful control is in
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place it will allow speculative simulation, since the context can
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be saved easily, and then restored after performing some
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simulation. The down-side is that for certain host architectures it
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can slow the simulator down (e.g. if globals can be accessed faster
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than local structures). However, this is not actually the case at
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the moment. The constructed engine uses direct names (that can be
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macro definitions). This keeps the engine source smalled (using
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short-hands), and it also allows the user to control whether they
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want to use global, or indirected memory locations. i.e. whether
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they want a single- or multi-threaded simulator engine. */
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/* The constructed simulator engine contains manifests for each of the
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features supported. The code that includes the engine can then
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discover the available features during its build. This information
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can be used to control run-time features provided by the final
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simulator. */
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/*---------------------------------------------------------------------------*/
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/* Program defaults */
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#define DEF_ISA (3)
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#define DEF_PROC64 (1 == 1)
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#define DEF_FP (1 == 1)
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#define DEF_FPSINGLE (1 == 0)
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#define FEATURE_PROC32 (1 << 0) /* 0 = 64bit; 1 = 32bit */
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#define FEATURE_HASFPU (1 << 1) /* 0 = no FPU; 1 = include FPU */
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#define FEATURE_FPSINGLE (1 << 1) /* 0 = double; 1 = single (only used if FEATURE_HASFPU defined) */
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#define FEATURE_GP64 (1 << 2) /* 0 = GPRLEN 32; 1 = GPRLEN 64 */
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#define FEATURE_FAST (1 << 17) /* 0 = normal; 1 = disable features that slow performance */
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#define FEATURE_WARN_STALL (1 << 24) /* 0 = nothing; 1 = generate warnings when pipeline would stall */
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#define FEATURE_WARN_LOHI (1 << 25) /* 0 = nothing; 1 = generate warnings when LO/HI corrupted */
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#define FEATURE_WARN_ZERO (1 << 26) /* 0 = nothing; 1 = generate warnings if attempt to write register zero */
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#define FEATURE_WARN_MEM (1 << 27) /* 0 = nothing; 1 = generate warnings when memory problems are noticed */
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#define FEATURE_WARN_R31 (1 << 28) /* 0 = nothing; 1 = generate warnings if r31 used dangerously */
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#define FEATURE_WARN_RESULT (1 << 29) /* 0 = nothing; 1 = generate warnings when undefined results may occur */
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#define FEATURE_IGEN (1 << 20) /* 0 = nothing; 1 = generate igen formatted output file */
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/* We used to enable FEATURE_WARN_ZERO, but it is perfectly legitimate to
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have the zero register as a destination -- the zero register just doesn't
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actually change. */
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/* start-sanitize-r5900 */
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/* The 5900 madd instructions for example use this feature. */
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/* end-sanitize-r5900 */
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#if 1
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#define FEATURE_WARNINGS (FEATURE_WARN_STALL | FEATURE_WARN_LOHI | FEATURE_WARN_R31)
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#else
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#define FEATURE_WARNINGS (FEATURE_WARN_STALL | FEATURE_WARN_LOHI | FEATURE_WARN_R31 | FEATURE_WARN_RESULT)
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#endif
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/* FEATURE_WARN_STALL */
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/* If MIPS I we want to raise a warning if an attempt is made to
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access Rn in an instruction immediately following an Rn update
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"WARNING : Invalid value read". The simulator engine is designed
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that the previous value is read in such cases, to allow programs
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that make use of this feature to execute. */
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/* If MIPS II or later, attempting to read a register before the
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update has completed will generate a "WARNING : Processor stall"
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message (since the processor will lock the pipeline until the value
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becomes available). */
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/* FEATURE_WARN_LOHI */
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/* Warn if an attempt is made to read the HI/LO registers before the
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update has completed, or if an attempt is made to update the
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registers whilst an update is occurring. */
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/* FEATURE_WARN_ZERO */
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/* Notify the user if an attempt is made to use GPR 0 as a destination. */
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/* FEATURE_WARN_R31 */
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/* Notify the user if register r31 (the default procedure call return
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address) is used unwisely. e.g. If r31 is used as the source in a
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branch-and-link instruction, it would mean that an exception in the
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delay slot instruction would not allow the branch to be re-started
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(since r31 will have been overwritten by the link operation during
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the first execution of the branch). */
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/* FEATURE_WARN_RESULT */
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/* Certain instructions do not raise exceptions when invalid operands
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are given, they will just result in undefined values being
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generated. This option controls whether the simulator flags such
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events. */
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/*---------------------------------------------------------------------------*/
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#include <stdio.h>
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#include <getopt.h>
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#include <limits.h>
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#include <errno.h>
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#include <ctype.h>
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#include "ansidecl.h"
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#include "opcode/mips.h"
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/* FIXME: ansidecl.h defines AND. */
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#undef AND
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#ifndef ULONG_MAX
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#define ULONG_MAX ((unsigned long)(~0L)) /* 0xFFFFFFFF */
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#endif
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static unsigned long my_strtoul ();
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#if 0
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#ifndef TRUE
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#define TRUE (1 == 1)
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#define FALSE (1 == 0)
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#endif
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#endif
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/*---------------------------------------------------------------------------*/
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/* Holding the instruction table this way makes it easier to check the
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instruction values defined, and to add instructions to the
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system. However, it makes the process of constructing the simulator
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a bit more complicated: */
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/* The "bitmap" is encoded as follows (NOTE: Only lower-case
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alphabetic characters should be used, since the letter ordinal is
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used as a bit position): */
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typedef struct operand_encoding {
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char id; /* character identifier */
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int fpos; /* first bit position */
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int flen; /* field length in bits */
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char * const type;
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char * const name;
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unsigned int flags;
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} operand_encoding;
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/* Values for the "flags" field: */
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#define OP_NONE (0 << 0) /* To keep the source tidy */
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#define OP_GPR (1 << 0) /* Get operand from integer register bank */
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#define OP_SIGNX (1 << 1) /* Sign-extend the operand */
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#define OP_SHIFT2 (1 << 2) /* Shift field left by 2 */
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#define OP_BITS5 (1 << 3) /* Only take the lo 5-bits of the operand */
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#define OP_GPR1 (1 << 4) /* fetch from the GPR1 registers */
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struct operand_encoding opfields[] = {
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{'0',-1,-1,"", "", (OP_NONE)}, /* special case for explicit zero */
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{'1',-1,-1,"", "", (OP_NONE)}, /* special case for explicit one */
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{'?',-1,-1,"", "", (OP_NONE)}, /* undefined (do not care at this level) */
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/* The rest are the explicit operand fields: */
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{'a', 6, 5,"int", "op1", (OP_NONE)}, /* shift amount (or hint) */
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{'b',21, 5,"int", "fr", (OP_NONE)}, /* fr register */
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{'c',16, 1,"int", "boolean", (OP_NONE)}, /* TRUE or FALSE boolean */
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{'d',11, 5,"int", "destreg", (OP_NONE)}, /* integer destination/rd register */
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{'e', 0,16,"t_reg", "offset", (OP_SIGNX)}, /* signed offset (lo-3bits must be zero) */
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{'f',17, 1,"int", "likely", (OP_NONE)}, /* set if branch LIKELY */
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{'g',16, 5,"t_reg", "op2", (OP_GPR)}, /* integer source rt register */
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{'h', 0,16,"t_reg", "offset", (OP_SIGNX)}, /* signed offset (lo-1bit must be zero) */
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{'i', 0,16,"t_reg", "op2", (OP_SIGNX)}, /* signed immediate (op2) */
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{'j', 0,26,"ut_reg","op1", (OP_SHIFT2)},/* shifted left 2 bits and combined with hi-order bits of address in the delay slot */
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{'k',16, 5,"int", "ft", (OP_NONE)},
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{'l', 0,16,"t_reg", "offset", (OP_SIGNX | OP_SHIFT2)}, /* signed offset shifted left 2 to make 18bit signed offset */
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{'m',21, 3,"int", "format", (OP_NONE)}, /* FP format field */
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{'n',16, 5,"int", "hint", (OP_NONE)}, /* hint */
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{'o',21, 5,"t_reg", "op1", (OP_GPR | OP_BITS5)}, /* integer source/rs register (but never treated as 32bit word) */
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{'p', 8, 3,"int", "condition_code",(OP_NONE)}, /* FP condition code field */
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{'q',18, 3,"int", "condition_code",(OP_NONE)}, /* FP condition code field */
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{'r', 6, 5,"int", "destreg", (OP_NONE)}, /* FP fd register */
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{'s',21, 5,"t_reg", "op1", (OP_GPR)}, /* integer source/rs register */
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{'t',16, 5,"int", "destreg", (OP_NONE)}, /* integer target rt (destination) register */
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{'u', 0, 4,"int", "cmpflags", (OP_NONE)}, /* FP comparison control flags */
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{'v',11, 5,"int", "fs", (OP_NONE)}, /* FP fs register (or PREFX hint) */
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{'w', 0,16,"t_reg", "offset", (OP_SIGNX)}, /* signed offset (lo-2bits must be zero) */
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{'x',23, 1,"int", "to", (OP_NONE)}, /* TRUE if move To; FALSE if move From */
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{'y', 0,16,"t_reg", "offset", (OP_SIGNX)}, /* signed offset */
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{'z', 0,16,"ut_reg","op2", (OP_NONE)}, /* unsigned immediate (zero extended) */
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{'S',21, 5,"t_reg", "rs_reg", (OP_GPR|OP_GPR1)}, /* rs field, GPR[rs] and GPR1[rs] as source */
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{'T',16, 5,"t_reg", "rt_reg", (OP_GPR|OP_GPR1)}, /* rt field, GPR[rt] and GPR1[rt] as source */
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};
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/* Main instruction encoding types: */
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typedef enum {
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NORMAL,
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SPECIAL,
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REGIMM,
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COP1,
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COP1X,
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COP1S, /* These instructions live in the reserved FP format values: 0..15,18-19,22-31 */
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MMINORM,
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MMI0,
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MMI1,
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MMI2,
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MMI3,
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/* mips16 encoding types. */
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I, RI, RR, RRI, RRR, RRI_A, ISHIFT, I8, I8_MOVR32, I8_MOV32R, I64, RI64
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} inst_type;
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/* Main instruction families: */
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typedef enum {
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ADD, /* res = operand1 + operand2 */
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SUB, /* res = operand1 - operand2 */
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MUL, /* res = operand1 * operand2 */
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DIV, /* res = operand1 / operand2 */
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AND, /* res = operand1 & operand2 */
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OR, /* res = operand1 | operand2 */
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XOR, /* res = operand1 ^ operand2 */
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MOVE, /* res = operand1 */
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BRANCH, /* execute delay slot instruction before branch unless (LIKELY && branch_not_taken) */
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JUMP, /* execute delay slot instruction before jump */
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LOAD, /* load from memory */
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STORE, /* store to memory */
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PREFETCH, /* prefetch data into cache */
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SET, /* set register on result of condition code */
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SHIFT, /* perform a logical or arithmetic shift */
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TRAP, /* system exception generation */
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BREAK, /* system breakpoint exception generation */
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SDBBP, /* software debug breakpoint exception generation */
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SYSCALL, /* system exception generation */
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SYNC, /* system cache control */
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DECODE, /* co-processor instruction */
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CACHE, /* co-processor 0 CACHE instruction */
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MADD16, /* VR4100 specific multiply-add extensions */
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FPMOVE,
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FPMOVEC,
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FPFLOOR,
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FPCEIL,
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FPTRUNC,
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FPROUND,
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FPNEG,
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FPABS,
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FPDIV,
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FPMUL,
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FPSUB,
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FPADD,
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FPPREFX,
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FPRECIP,
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FPSQRT,
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FPCONVERT,
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FPCOMPARE,
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MADD,
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/* start-sanitize-r5900 */
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PABS,
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PADD,
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PADSBH,
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POP,
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PCMP,
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PCPYH,
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PCPYLD,
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PCPYUD,
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PEXCH,
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PEXCW,
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PEXOH,
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PEXOW,
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PEXTLB,
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PEXTLH,
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PEXTLW,
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PEXTUB,
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PEXTUH,
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PEXTUW,
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PPACB,
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PPACH,
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PPACW,
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PREVH,
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PROT3W,
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PINTH,
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PINTOH,
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PMXX,
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PMFHL,
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PMTHL,
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PMAXMIN,
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QFSRV,
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MxSA,
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MTSAB,
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MTSAH,
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PSHIFT,
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PSLLVW,
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PSRLVW,
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PSRAVW,
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PLZCW,
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PHMADDH,
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PMULTH,
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PMULTW,
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PDIVBW,
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PDIVW,
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PEXT5,
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PPAC5,
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/* end-sanitize-r5900 */
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NYI, /* Not Yet Implemented, placeholder, errors if used */
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RSVD /* "Reserved Instruction" on MIPS IV, or if co-proc 3 absent. Otherwise "Reserved Instruction" */
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} opcode_type;
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/* Flags field: */
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#define NONE (0 << 0) /* Zero value (used to keep source tidy) */
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#define SIM_SH_SIZE (0)
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#define SIM_MASK_SIZE (0x7)
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#define BYTE (0) /* 8bit */
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#define HALFWORD (1) /* 16bit */
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#define WORD (2) /* 32bit */
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#define DOUBLEWORD (3) /* 64bit */
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#define SINGLE (4) /* single precision FP */
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#define DOUBLE (5) /* double precision FP */
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/* start-sanitize-r5900 */
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#define QUADWORD (6) /* 128bit */
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/* end-sanitize-r5900 */
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/* Shorthand to get the size field from the flags value: */
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#define GETDATASIZEINSN(i) (((i)->flags >> SIM_SH_SIZE) & SIM_MASK_SIZE)
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/* The rest are single bit flags: */
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#define MULTIPLY (1 << 3) /* actually FP multiply ADD/SUB modifier */
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#define EQ (1 << 4)
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#define GT (1 << 5)
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#define LT (1 << 6)
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#define NOT (1 << 7)
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#define LIKELY (1 << 8)
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#define SIGNEXTEND (1 << 9)
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#define OVERFLOW (1 << 10)
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#define LINK (1 << 11)
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#define ATOMIC (1 << 12)
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#define SHIFT16 (1 << 13)
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#define REG (1 << 14)
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#define LEFT (1 << 15) /* Deliberate explicit encodings to allow check for neither, or both */
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#define RIGHT (1 << 16) /* Mutually exclusive with "LEFT" */
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#define LOGICAL (1 << 17)
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#define ARITHMETIC (1 << 18)
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#define UNSIGNED (1 << 19)
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#define HI32 (1 << 20)
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#define HI (1 << 21) /* accesses or updates the HI register */
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#define LO (1 << 22) /* accesses or updates the LO register */
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#define WORD32 (1 << 23)
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#define FP (1 << 24) /* Floating Point operation */
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#define FIXED (1 << 25) /* fixed point arithmetic */
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#define COPROC (1 << 26)
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#define INTEGER (1 << 27)
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#define CONDITIONAL (1 << 28)
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#define RECIP (1 << 29)
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#define CONTROL (1 << 30)
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#define NOARG (1 << 31) /* Instruction has no (defined) operands */
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/* NOTE: We can overload the use of certain of these flags, since not
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all options are applicable to all instruction types. This will free
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up more space for new flags. */
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/* Overloadings of above bits */
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#define PIPE1 LIKELY /* Using pipeline 1 (DIV,MUL) */
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#define OP3 EQ /* 3 operand version of operation (MUL) */
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#define SATURATE OVERFLOW /* for PADD, saturate for overflow */
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#define SUBTRACT LEFT /* for PMULT, PMULT becomes PMSUB */
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#define ADDITION RIGHT /* for PMULT, PMULT becomes PMADD */
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#define FROM LEFT /* move from special register */
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#define TO RIGHT /* move to special register */
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/* For bitwise parallel operations */
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#define POP_AND 0 /* for POP, op = & */
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#define POP_OR LEFT /* for POP, op = | */
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#define POP_NOR LIKELY /* for POP, op = ~(x | y) */
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#define POP_XOR LEFT|LIKELY /* for POP, op = ^ */
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#define GET_OP_FROM_INSN(insn) (((insn)->flags)&(LEFT|LIKELY))
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typedef struct instruction {
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char *name; /* ASCII mnemonic name */
|
|
unsigned int isa; /* MIPS ISA number where instruction introduced */
|
|
char *bitmap; /* 32character string describing instruction operands */
|
|
inst_type mark; /* type of MIPS instruction encoding */
|
|
opcode_type type; /* main instruction family */
|
|
unsigned int flags; /* flags describing instruction features */
|
|
} instruction;
|
|
/* The number of pipeline cycles taken by an instruction varies
|
|
between MIPS processors. This means that the information must be
|
|
encoded elsewhere, in a CPU specific structure. */
|
|
|
|
/* NOTE: Undefined instructions cause "Reserved Instruction"
|
|
exceptions. i.e. if there is no bit-mapping defined then the
|
|
instruction is deemed to be undefined. */
|
|
|
|
/* NOTE: The "isa" field is also used to encode flags for particular
|
|
chip architecture extensions. e.g. the NEC VR4100 specific
|
|
instructions. Normally chip extensions are added via the COP0
|
|
space. However, the VR4100 (and possibly other devices) also use
|
|
the normal instruction space. */
|
|
#define MASK_ISA (0x000000FF) /* Start by leaving 8bits for the ISA ID */
|
|
/* The other bits are allocated downwards, to avoid renumbering if we
|
|
have to extend the bits allocated to the pure ISA number.
|
|
|
|
These architecture bits come in two flavors:
|
|
ISA dependent - marking insns that should be included in the opcode
|
|
set if that architecture is requested on the gencode command line
|
|
AND the ISA of the insn is <= requested ISA;
|
|
|
|
ISA independent - marking insn that should be included in the opcode
|
|
set if that architecture is requested
|
|
OR the ISA of the insn is <= requested ISA.
|
|
|
|
Independent bits are listed in MASK_ISA_INDEP, the rest are dependent.
|
|
*/
|
|
#define ARCH_VR4100 ((unsigned)1 << 31) /* NEC VR4100 extension instructions */
|
|
/* start-sanitize-r5900 */
|
|
#define ARCH_R5900 ((unsigned)1 << 30) /* Toshiba r5900 extension instructions */
|
|
/* end-sanitize-r5900 */
|
|
#define ARCH_R3900 ((unsigned)1 << 29) /* Toshiba r3900 (tx39) */
|
|
/* start-sanitize-tx49 */
|
|
#define ARCH_R4900 ((unsigned)1 << 28) /* Toshiba r4900 (tx49) */
|
|
/* end-sanitize-tx49 */
|
|
|
|
/* start-sanitize-tx19 */
|
|
/* The r1900 (tx19) is a tx39 with a mips16 decoder. For the purposes
|
|
of implementing the simulator we treat them as the same. */
|
|
/* end-sanitize-tx19 */
|
|
|
|
/* A list (or'ed) of extension insn sets that can be requested independant of the ISA# */
|
|
#define MASK_ISA_INDEP (0 \
|
|
| ARCH_R3900 \
|
|
/* start-sanitize-tx49 */ \
|
|
| ARCH_R4900 \
|
|
/* end-sanitize-tx49 */ \
|
|
/* start-sanitize-r5900 */ \
|
|
| ARCH_R5900 \
|
|
/* end-sanitize-r5900 */ \
|
|
| 0)
|
|
|
|
#define MASK_ISA_DEP ~(MASK_ISA_INDEP | MASK_ISA)
|
|
|
|
/* Very short names for use in the table below to keep it neet. */
|
|
#define G1 (3 | ARCH_VR4100)
|
|
|
|
#define G2 (4 \
|
|
/* start-sanitize-r5900 */ \
|
|
| ARCH_R5900 \
|
|
/* end-sanitize-r5900 */ \
|
|
| 0)
|
|
|
|
#define G3 (4 \
|
|
/* start-sanitize-r5900 */ \
|
|
/* insn that are not really 5900 insn but were left in */ \
|
|
/* until we can rewrite the code-gen and libs */ \
|
|
| ARCH_R5900 \
|
|
/* end-sanitize-r5900 */ \
|
|
| 0)
|
|
|
|
#define G4 (2 | ARCH_R3900)
|
|
|
|
#define G5 (0 \
|
|
| ARCH_R3900 \
|
|
/* start-sanitize-tx49 */ \
|
|
| ARCH_R4900 \
|
|
/* end-sanitize-tx49 */ \
|
|
/* start-sanitize-r5900 */ \
|
|
| ARCH_R5900 \
|
|
/* end-sanitize-r5900 */ \
|
|
)
|
|
|
|
#define G6 (3 | ARCH_R3900)
|
|
|
|
#define G7 (ARCH_R3900 \
|
|
/* start-sanitize-tx49 */ \
|
|
| ARCH_R4900 \
|
|
/* end-sanitize-tx49 */ \
|
|
)
|
|
|
|
#define G8 (4 \
|
|
/* start-sanitize-tx49 */ \
|
|
| ARCH_R4900 \
|
|
/* end-sanitize-tx49 */ \
|
|
/* start-sanitize-r5900 */ \
|
|
| ARCH_R5900 \
|
|
/* end-sanitize-r5900 */ \
|
|
)
|
|
|
|
#define G9 (3 \
|
|
/* start-sanitize-tx49 */ \
|
|
| ARCH_R4900 \
|
|
/* end-sanitize-tx49 */ \
|
|
)
|
|
|
|
/* start-sanitize-r5900 */
|
|
#define T5 ARCH_R5900
|
|
/* end-sanitize-r5900 */
|
|
|
|
|
|
/* The HIBERNATE, STANDBY and SUSPEND instructions are encoded in the
|
|
COP0 space. This means that an external decoder should be added
|
|
when constructing a full VR4100 simulator. However some arithmetic
|
|
instructions are encoded in the normal instruction space. */
|
|
|
|
struct instruction MIPS_DECODE[] = {
|
|
/* The instructions are alphabetical, and not in instruction bit-order: */
|
|
{"ABS", 1,"01000110mmm00000vvvvvrrrrr000101",COP1, FPABS, (FP)},
|
|
{"ADD", 1,"000000sssssgggggddddd00000100000",SPECIAL,ADD, (WORD | WORD32 | OVERFLOW)}, /* rd = rs + rt */
|
|
{"ADD", 1,"01000110mmmkkkkkvvvvvrrrrr000000",COP1, FPADD, (FP)},
|
|
{"ADDI", 1,"001000ssssstttttiiiiiiiiiiiiiiii",NORMAL, ADD, (WORD | WORD32 | OVERFLOW)},
|
|
{"ADDU", 1,"000000sssssgggggddddd00000100001",SPECIAL,ADD, (WORD | WORD32)}, /* rd = rs + rt */
|
|
{"ADDIU", 1,"001001ssssstttttiiiiiiiiiiiiiiii",NORMAL, ADD, (WORD | WORD32)},
|
|
{"AND", 1,"000000sssssgggggddddd00000100100",SPECIAL,AND, (NONE)}, /* rd = rs AND rt */
|
|
{"ANDI", 1,"001100ssssstttttzzzzzzzzzzzzzzzz",NORMAL, AND, (NONE)},
|
|
{"BC1", 1,"01000101000qqqfcllllllllllllllll",COP1S, BRANCH, (FP)},
|
|
{"BEQ", 1,"000100sssssgggggllllllllllllllll",NORMAL, BRANCH, (EQ)},
|
|
{"BEQL", G4,"010100sssssgggggllllllllllllllll",NORMAL, BRANCH, (EQ | LIKELY)},
|
|
{"BGEZ", 1,"000001sssss00001llllllllllllllll",REGIMM, BRANCH, (GT | EQ)},
|
|
{"BGEZAL", 1,"000001sssss10001llllllllllllllll",REGIMM, BRANCH, (GT | EQ | LINK)},
|
|
{"BGEZALL",G4,"000001sssss10011llllllllllllllll",REGIMM, BRANCH, (GT | EQ | LINK | LIKELY)},
|
|
{"BGEZL", G4,"000001sssss00011llllllllllllllll",REGIMM, BRANCH, (GT | EQ | LIKELY)},
|
|
{"BGTZ", 1,"000111sssss00000llllllllllllllll",NORMAL, BRANCH, (GT)},
|
|
{"BGTZL", G4,"010111sssss00000llllllllllllllll",NORMAL, BRANCH, (GT | LIKELY)},
|
|
{"BLEZ", 1,"000110sssss00000llllllllllllllll",NORMAL, BRANCH, (LT | EQ)},
|
|
{"BLEZL", G4,"010110sssss00000llllllllllllllll",NORMAL, BRANCH, (LT | EQ | LIKELY)},
|
|
{"BLTZ", 1,"000001sssss00000llllllllllllllll",REGIMM, BRANCH, (LT)},
|
|
{"BLTZAL", 1,"000001sssss10000llllllllllllllll",REGIMM, BRANCH, (LT | LINK)},
|
|
{"BLTZALL",G4,"000001sssss10010llllllllllllllll",REGIMM, BRANCH, (LT | LINK | LIKELY)},
|
|
{"BLTZL", G4,"000001sssss00010llllllllllllllll",REGIMM, BRANCH, (LT | LIKELY)},
|
|
{"BNE", 1,"000101sssssgggggllllllllllllllll",NORMAL, BRANCH, (NOT | EQ)},
|
|
{"BNEL", G4,"010101sssssgggggllllllllllllllll",NORMAL, BRANCH, (NOT | EQ | LIKELY)},
|
|
{"BREAK", 1,"000000????????????????????001101",SPECIAL,BREAK, (NOARG)},
|
|
{"CEIL.L", 3,"01000110mmm00000vvvvvrrrrr001010",COP1, FPCEIL, (FP | FIXED | DOUBLEWORD)},
|
|
{"CEIL.W", 2,"01000110mmm00000vvvvvrrrrr001110",COP1, FPCEIL, (FP | FIXED | WORD)},
|
|
{"COP0", 1,"010000??????????????????????????",NORMAL, DECODE, (NOARG)},
|
|
{"COP2", 1,"010010??????????????????????????",NORMAL, DECODE, (NOARG)},
|
|
{"CVT.D", 1,"01000110mmm00000vvvvvrrrrr100001",COP1, FPCONVERT,(FP | DOUBLE)},
|
|
{"CVT.L", 3,"01000110mmm00000vvvvvrrrrr100101",COP1, FPCONVERT,(FP | FIXED | DOUBLEWORD)},
|
|
{"CVT.S", 1,"01000110mmm00000vvvvvrrrrr100000",COP1, FPCONVERT,(FP | SINGLE)},
|
|
{"CVT.W", 1,"01000110mmm00000vvvvvrrrrr100100",COP1, FPCONVERT,(FP | FIXED | WORD)},
|
|
{"C.%s", 1,"01000110mmmkkkkkvvvvvppp0011uuuu",COP1, FPCOMPARE,(FP)},
|
|
{"CxC1", 1,"01000100x10kkkkkvvvvv00000000000",COP1S, FPMOVEC, (FP | WORD | CONTROL)},
|
|
{"DADD", 3,"000000sssssgggggddddd00000101100",SPECIAL,ADD, (DOUBLEWORD | OVERFLOW)},
|
|
{"DADDI", 3,"011000ssssstttttiiiiiiiiiiiiiiii",NORMAL, ADD, (DOUBLEWORD | OVERFLOW)},
|
|
{"DADDU", 3,"000000sssssgggggddddd00000101101",SPECIAL,ADD, (DOUBLEWORD | UNSIGNED)},
|
|
{"DADDIU", 3,"011001ssssstttttiiiiiiiiiiiiiiii",NORMAL, ADD, (DOUBLEWORD | UNSIGNED)},
|
|
{"DDIV", 3,"000000sssssggggg0000000000011110",SPECIAL,DIV, (DOUBLEWORD | HI | LO)},
|
|
{"DDIVU", 3,"000000sssssggggg0000000000011111",SPECIAL,DIV, (DOUBLEWORD | UNSIGNED | HI | LO)},
|
|
{"DIV", 1,"000000sssssggggg0000000000011010",SPECIAL,DIV, (WORD | WORD32 | SIGNEXTEND | HI | LO)},
|
|
{"DIV", 1,"01000110mmmkkkkkvvvvvrrrrr000011",COP1, FPDIV, (FP | WORD | HI | LO)},
|
|
/* start-sanitize-r5900 */
|
|
{"DIV1", T5,"011100sssssggggg0000000000011010",MMINORM,DIV, (WORD | WORD32 | SIGNEXTEND | HI | LO | PIPE1)},
|
|
/* end-sanitize-r5900 */
|
|
{"DIVU", 1,"000000sssssggggg0000000000011011",SPECIAL,DIV, (WORD | WORD32 | UNSIGNED | SIGNEXTEND | HI | LO)},
|
|
/* start-sanitize-r5900 */
|
|
{"DIVU1", T5,"011100sssssggggg0000000000011011",MMINORM,DIV, (WORD | WORD32 | UNSIGNED | SIGNEXTEND | HI | LO | PIPE1)},
|
|
/* end-sanitize-r5900 */
|
|
{"DMADD16",G1,"000000sssssggggg0000000000101001",SPECIAL,MADD16, (DOUBLEWORD | HI | LO)},
|
|
/* See note near MULT for explanation of 3op-ness. */
|
|
{"DMULT", G9,"000000sssssgggggddddd00000011100",SPECIAL,MUL, (OP3 | DOUBLEWORD | HI | LO)},
|
|
{"DMULTU", G9,"000000sssssgggggddddd00000011101",SPECIAL,MUL, (OP3 | DOUBLEWORD | UNSIGNED | HI | LO)},
|
|
{"DMxC1", 3,"01000100x01kkkkkvvvvv00000000000",COP1S, FPMOVEC, (FP | DOUBLEWORD)},
|
|
{"DSLL", 3,"00000000000gggggdddddaaaaa111000",SPECIAL,SHIFT, (DOUBLEWORD | LEFT | LOGICAL)},
|
|
{"DSLLV", 3,"000000sssssgggggddddd00000010100",SPECIAL,SHIFT, (DOUBLEWORD | LEFT | LOGICAL | REG)},
|
|
{"DSLL32", 3,"00000000000gggggdddddaaaaa111100",SPECIAL,SHIFT, (DOUBLEWORD | LEFT | LOGICAL | HI32)}, /* rd = rt << (sa + 32) */
|
|
{"DSRA", 3,"00000000000gggggdddddaaaaa111011",SPECIAL,SHIFT, (DOUBLEWORD | RIGHT | ARITHMETIC)},
|
|
{"DSRAV", 3,"000000sssssgggggddddd00000010111",SPECIAL,SHIFT, (DOUBLEWORD | RIGHT | ARITHMETIC | REG)},
|
|
{"DSRA32", 3,"00000000000gggggdddddaaaaa111111",SPECIAL,SHIFT, (DOUBLEWORD | RIGHT | ARITHMETIC | HI32)}, /* rd = rt >> (sa + 32) */
|
|
{"DSRL", 3,"00000000000gggggdddddaaaaa111010",SPECIAL,SHIFT, (DOUBLEWORD | RIGHT | LOGICAL)},
|
|
{"DSRLV", 3,"000000sssssgggggddddd00000010110",SPECIAL,SHIFT, (DOUBLEWORD | RIGHT | LOGICAL | REG)},
|
|
{"DSRL32", 3,"00000000000gggggdddddaaaaa111110",SPECIAL,SHIFT, (DOUBLEWORD | RIGHT | LOGICAL | HI32)},
|
|
{"DSUB", 3,"000000sssssgggggddddd00000101110",SPECIAL,SUB, (DOUBLEWORD)},
|
|
{"DSUBU", 3,"000000sssssgggggddddd00000101111",SPECIAL,SUB, (DOUBLEWORD | UNSIGNED)},
|
|
{"FLOOR.L", 3,"01000110mmm00000vvvvvrrrrr001011",COP1, FPFLOOR, (FP | FIXED | DOUBLEWORD)},
|
|
{"FLOOR.W", 2,"01000110mmm00000vvvvvrrrrr001111",COP1, FPFLOOR, (FP | FIXED | WORD)},
|
|
{"J", 1,"000010jjjjjjjjjjjjjjjjjjjjjjjjjj",NORMAL, JUMP, (NONE)}, /* NOTE: boundary case due to delay slot address being used */
|
|
{"JAL", 1,"000011jjjjjjjjjjjjjjjjjjjjjjjjjj",NORMAL, JUMP, (LINK)}, /* NOTE: boundary case due to delay slot address being used */
|
|
{"JALR", 1,"000000sssss00000ddddd00000001001",SPECIAL,JUMP, (LINK | REG)},
|
|
{"JALX", 1,"011101jjjjjjjjjjjjjjjjjjjjjjjjjj",NORMAL, JUMP, (LINK | NOT)},
|
|
{"JR", 1,"000000sssss000000000000000001000",SPECIAL,JUMP, (NONE)}, /* need to check PC as part of instruction fetch */
|
|
{"LB", 1,"100000ssssstttttyyyyyyyyyyyyyyyy",NORMAL, LOAD, (BYTE | SIGNEXTEND)}, /* NOTE: "i" rather than "o" because BYTE addressing is allowed */
|
|
{"LBU", 1,"100100ssssstttttyyyyyyyyyyyyyyyy",NORMAL, LOAD, (BYTE)}, /* NOTE: See "LB" comment */
|
|
{"LD", 3,"110111sssssttttteeeeeeeeeeeeeeee",NORMAL, LOAD, (DOUBLEWORD)},
|
|
{"LDC1", 2,"110101sssssttttteeeeeeeeeeeeeeee",NORMAL, LOAD, (DOUBLEWORD | COPROC)},
|
|
{"LDC2", 2,"110110sssssttttteeeeeeeeeeeeeeee",NORMAL, LOAD, (DOUBLEWORD | COPROC)},
|
|
{"LDL", 3,"011010ssssstttttyyyyyyyyyyyyyyyy",NORMAL, LOAD, (DOUBLEWORD | LEFT)}, /* NOTE: See "LB" comment */
|
|
{"LDR", 3,"011011ssssstttttyyyyyyyyyyyyyyyy",NORMAL, LOAD, (DOUBLEWORD | RIGHT)}, /* NOTE: See "LB" comment */
|
|
{"LDXC1", G3,"010011sssssggggg00000rrrrr000001",COP1X, LOAD, (FP | DOUBLEWORD | COPROC | REG)},
|
|
{"LH", 1,"100001sssssttttthhhhhhhhhhhhhhhh",NORMAL, LOAD, (HALFWORD | SIGNEXTEND)},
|
|
{"LHU", 1,"100101sssssttttthhhhhhhhhhhhhhhh",NORMAL, LOAD, (HALFWORD)},
|
|
{"LL", 2,"110000ssssstttttwwwwwwwwwwwwwwww",NORMAL, LOAD, (WORD | ATOMIC | SIGNEXTEND)},
|
|
{"LLD", 3,"110100sssssttttteeeeeeeeeeeeeeee",NORMAL, LOAD, (DOUBLEWORD | ATOMIC)},
|
|
{"LUI", 1,"00111100000tttttiiiiiiiiiiiiiiii",NORMAL, MOVE, (SHIFT16)}, /* Cheat and specify sign-extension of immediate field */
|
|
/* start-sanitize-r5900 */
|
|
{"LQ", T5,"011110sssssttttteeeeeeeeeeeeeeee",NORMAL, LOAD, (QUADWORD)},
|
|
/* end-sanitize-r5900 */
|
|
{"LW", 1,"100011ssssstttttwwwwwwwwwwwwwwww",NORMAL, LOAD, (WORD | SIGNEXTEND)},
|
|
{"LWC1", 1,"110001ssssstttttwwwwwwwwwwwwwwww",NORMAL, LOAD, (WORD | COPROC)},
|
|
{"LWC2", 1,"110010ssssstttttwwwwwwwwwwwwwwww",NORMAL, LOAD, (WORD | COPROC)},
|
|
{"LWL", 1,"100010ssssstttttyyyyyyyyyyyyyyyy",NORMAL, LOAD, (WORD | LEFT)},
|
|
{"LWR", 1,"100110ssssstttttyyyyyyyyyyyyyyyy",NORMAL, LOAD, (WORD | RIGHT)},
|
|
{"LWU", 3,"100111ssssstttttwwwwwwwwwwwwwwww",NORMAL, LOAD, (WORD)},
|
|
{"LWXC1", G3,"010011sssssggggg00000rrrrr000000",COP1X, LOAD, (FP | WORD | COPROC | REG)},
|
|
{"MADD", G5,"011100sssssgggggddddd00000000000",MMINORM,MADD, (NONE)},
|
|
{"MADDU", G5,"011100sssssgggggddddd00000000001",MMINORM,MADD, (UNSIGNED)},
|
|
/* start-sanitize-r5900 */
|
|
{"MADD1", T5,"011100sssssgggggddddd00000100000",MMINORM,MADD, (PIPE1)},
|
|
{"MADDU1", T5,"011100sssssgggggddddd00000100001",MMINORM,MADD, (UNSIGNED | PIPE1)},
|
|
/* end-sanitize-r5900 */
|
|
{"MADD16", G1,"000000sssssggggg0000000000101000",SPECIAL,MADD16, (WORD | HI | LO)},
|
|
{"MADD.D", G3,"010011bbbbbkkkkkvvvvvrrrrr100001",COP1X, FPADD, (FP | MULTIPLY | DOUBLE)},
|
|
{"MADD.S", G3,"010011bbbbbkkkkkvvvvvrrrrr100000",COP1X, FPADD, (FP | MULTIPLY | SINGLE)},
|
|
{"MFHI", 1,"0000000000000000ddddd00000010000",SPECIAL,MOVE, (HI | LEFT)}, /* with following, from and to denoted by usage of LEFT or RIGHT */
|
|
/* start-sanitize-r5900 */
|
|
{"MFHI1", T5,"0111000000000000ddddd00000010000",MMINORM,MOVE, (HI | LEFT | PIPE1)},
|
|
/* end-sanitize-r5900 */
|
|
{"MFLO", 1,"0000000000000000ddddd00000010010",SPECIAL,MOVE, (LO | LEFT)},
|
|
/* start-sanitize-r5900 */
|
|
{"MFLO1", T5,"0111000000000000ddddd00000010010",MMINORM,MOVE, (LO | LEFT | PIPE1)},
|
|
{"MFSA", T5,"0000000000000000ddddd00000101000",SPECIAL,MxSA, (FROM)},
|
|
/* end-sanitize-r5900 */
|
|
{"MTHI", 1,"000000sssss000000000000000010001",SPECIAL,MOVE, (HI | RIGHT)},
|
|
/* start-sanitize-r5900 */
|
|
{"MTHI1", T5,"011100sssss000000000000000010001",MMINORM,MOVE, (HI | RIGHT | PIPE1)},
|
|
/* end-sanitize-r5900 */
|
|
{"MTLO", 1,"000000sssss000000000000000010011",SPECIAL,MOVE, (LO | RIGHT)},
|
|
/* start-sanitize-r5900 */
|
|
{"MTLO1", T5,"011100sssss000000000000000010011",MMINORM,MOVE, (LO | RIGHT | PIPE1)},
|
|
{"MTSA", T5,"000000sssss000000000000000101001",SPECIAL,MxSA, (TO)},
|
|
{"MTSAB", T5,"000001sssss11000iiiiiiiiiiiiiiii",REGIMM, MTSAB, (NONE)},
|
|
{"MTSAH", T5,"000001sssss11001iiiiiiiiiiiiiiii",REGIMM, MTSAH, (NONE)},
|
|
/* end-sanitize-r5900 */
|
|
{"MOV", 1,"01000110mmm00000vvvvvrrrrr000110",COP1, FPMOVE, (FP)},
|
|
{"MOVN", G2,"000000sssssgggggddddd00000001011",SPECIAL,MOVE, (NOT | EQ)},
|
|
{"MOVN", G2,"01000110mmmgggggvvvvvrrrrr010011",COP1, FPMOVE, (FP | NOT | EQ)},
|
|
{"MOV%c", G3,"000000sssssqqq0cddddd00000000001",SPECIAL,FPMOVE, (FP | CONDITIONAL | INTEGER)},
|
|
{"MOV%c", G3,"01000110mmmqqq0cvvvvvrrrrr010001",COP1, FPMOVE, (FP | CONDITIONAL)},
|
|
{"MOVZ", G2,"000000sssssgggggddddd00000001010",SPECIAL,MOVE, (EQ)},
|
|
{"MOVZ", G2,"01000110mmmgggggvvvvvrrrrr010010",COP1, FPMOVE, (FP | EQ)},
|
|
{"MSUB.D", G3,"010011bbbbbkkkkkvvvvvrrrrr101001",COP1X, FPSUB, (FP | MULTIPLY | DOUBLE)},
|
|
{"MSUB.S", G3,"010011bbbbbkkkkkvvvvvrrrrr101000",COP1X, FPSUB, (FP | MULTIPLY | SINGLE)},
|
|
{"MUL", 1,"01000110mmmkkkkkvvvvvrrrrr000010",COP1, FPMUL, (FP | HI | LO)},
|
|
/* The 3op version of MULT and MULTU are TX39 (and related chips) specific.
|
|
They should be removed from other chips sets, so that using the 3op opcode
|
|
causes a reserved instruction exception, but gencode can't deal with
|
|
that currently. */
|
|
{"MULT", 1,"000000sssssgggggddddd00000011000",SPECIAL,MUL, (OP3 | WORD | WORD32 | HI | LO)},
|
|
/* start-sanitize-r5900 */
|
|
{"MULT1", T5,"011100sssssgggggddddd00000011000",MMINORM,MUL, (OP3 | WORD | WORD32 | HI | LO | PIPE1)},
|
|
/* end-sanitize-r5900 */
|
|
{"MULTU", 1,"000000sssssgggggddddd00000011001",SPECIAL,MUL, (OP3 | WORD | WORD32 | UNSIGNED | HI | LO)},
|
|
/* start-sanitize-r5900 */
|
|
{"MULTU1", T5,"011100sssssgggggddddd00000011001",MMINORM,MUL, (OP3 | WORD | WORD32 | UNSIGNED | HI | LO | PIPE1)},
|
|
/* end-sanitize-r5900 */
|
|
{"MxC1", 1,"01000100x00kkkkkvvvvv00000000000",COP1S, FPMOVEC, (FP | WORD)},
|
|
{"NEG", 1,"01000110mmm00000vvvvvrrrrr000111",COP1, FPNEG, (FP)},
|
|
{"NMADD.D", 4,"010011bbbbbkkkkkvvvvvrrrrr110001",COP1X, FPADD, (FP | NOT | MULTIPLY | DOUBLE)},
|
|
{"NMADD.S", 4,"010011bbbbbkkkkkvvvvvrrrrr110000",COP1X, FPADD, (FP | NOT | MULTIPLY | SINGLE)},
|
|
{"NMSUB.D", 4,"010011bbbbbkkkkkvvvvvrrrrr111001",COP1X, FPSUB, (FP | NOT | MULTIPLY | DOUBLE)},
|
|
{"NMSUB.S", 4,"010011bbbbbkkkkkvvvvvrrrrr111000",COP1X, FPSUB, (FP | NOT | MULTIPLY | SINGLE)},
|
|
{"NOR", 1,"000000sssssgggggddddd00000100111",SPECIAL,OR, (NOT)},
|
|
{"OR", 1,"000000sssssgggggddddd00000100101",SPECIAL,OR, (NONE)},
|
|
{"ORI", 1,"001101ssssstttttzzzzzzzzzzzzzzzz",NORMAL, OR, (NONE)},
|
|
|
|
/* start-sanitize-r5900 */
|
|
{"PABSH", T5,"01110000000TTTTTddddd00101101000",MMI1, PABS, (HALFWORD)},
|
|
{"PABSW", T5,"01110000000TTTTTddddd00001101000",MMI1, PABS, (WORD)},
|
|
|
|
{"PADDB", T5,"011100SSSSSTTTTTddddd01000001000",MMI0, PADD, (BYTE)},
|
|
{"PADDH", T5,"011100SSSSSTTTTTddddd00100001000",MMI0, PADD, (HALFWORD)},
|
|
{"PADDW", T5,"011100SSSSSTTTTTddddd00000001000",MMI0, PADD, (WORD)},
|
|
|
|
{"PADDSB", T5,"011100SSSSSTTTTTddddd11000001000",MMI0, PADD, (BYTE | SATURATE)},
|
|
{"PADDSH", T5,"011100SSSSSTTTTTddddd10100001000",MMI0, PADD, (HALFWORD | SATURATE)},
|
|
{"PADDSW", T5,"011100SSSSSTTTTTddddd10000001000",MMI0, PADD, (WORD | SATURATE)},
|
|
|
|
{"PADDUB", T5,"011100SSSSSTTTTTddddd11000101000",MMI1, PADD, (BYTE | UNSIGNED)},
|
|
{"PADDUH", T5,"011100SSSSSTTTTTddddd10100101000",MMI1, PADD, (HALFWORD | UNSIGNED)},
|
|
{"PADDUW", T5,"011100SSSSSTTTTTddddd10000101000",MMI1, PADD, (WORD | UNSIGNED)},
|
|
|
|
{"PADSBH", T5,"011100SSSSSTTTTTddddd00100101000",MMI1, PADSBH, (NONE)},
|
|
|
|
{"PAND", T5,"011100SSSSSTTTTTddddd10010001001",MMI2, POP, (POP_AND)},
|
|
|
|
{"PCEQB", T5,"011100SSSSSTTTTTddddd01010101000",MMI1, PCMP, (EQ | BYTE)},
|
|
{"PCEQH", T5,"011100SSSSSTTTTTddddd00110101000",MMI1, PCMP, (EQ | HALFWORD)},
|
|
{"PCEQW", T5,"011100SSSSSTTTTTddddd00010101000",MMI1, PCMP, (EQ | WORD)},
|
|
|
|
{"PCGTB", T5,"011100SSSSSTTTTTddddd01010001000",MMI0, PCMP, (GT | BYTE)},
|
|
{"PCGTH", T5,"011100SSSSSTTTTTddddd00110001000",MMI0, PCMP, (GT | HALFWORD)},
|
|
{"PCGTW", T5,"011100SSSSSTTTTTddddd00010001000",MMI0, PCMP, (GT | WORD)},
|
|
|
|
{"PCPYH", T5,"01110000000TTTTTddddd11011101001",MMI3, PCPYH, (NONE)},
|
|
{"PCPYLD", T5,"011100SSSSSTTTTTddddd01110001001",MMI2, PCPYLD, (NONE)},
|
|
{"PCPYUD", T5,"011100SSSSSTTTTTddddd01110101001",MMI3, PCPYUD, (NONE)},
|
|
|
|
{"PDIVBW", T5,"011100SSSSSTTTTT0000011101001001",MMI2, PDIVBW, (NONE)},
|
|
{"PDIVUW", T5,"011100SSSSSTTTTT0000001101101001",MMI3, PDIVW, (UNSIGNED)},
|
|
{"PDIVW", T5,"011100SSSSSTTTTT0000001101001001",MMI2, PDIVW, (NONE)},
|
|
|
|
{"PEXCH", T5,"01110000000TTTTTddddd11010101001",MMI3, PEXCH, (NONE)},
|
|
{"PEXCW", T5,"01110000000TTTTTddddd11110101001",MMI3, PEXCW, (NONE)},
|
|
{"PEXOH", T5,"01110000000TTTTTddddd11010001001",MMI2, PEXOH, (NONE)},
|
|
{"PEXOW", T5,"01110000000TTTTTddddd11110001001",MMI2, PEXOW, (NONE)},
|
|
|
|
{"PEXT5", T5,"01110000000TTTTTddddd11110001000",MMI0, PEXT5, (NONE)},
|
|
|
|
{"PEXTLB", T5,"011100SSSSSTTTTTddddd11010001000",MMI0, PEXTLB, (NONE)},
|
|
{"PEXTLH", T5,"011100SSSSSTTTTTddddd10110001000",MMI0, PEXTLH, (NONE)},
|
|
{"PEXTLW", T5,"011100SSSSSTTTTTddddd10010001000",MMI0, PEXTLW, (NONE)},
|
|
{"PEXTUB", T5,"011100SSSSSTTTTTddddd11010101000",MMI1, PEXTUB, (NONE)},
|
|
{"PEXTUH", T5,"011100SSSSSTTTTTddddd10110101000",MMI1, PEXTUH, (NONE)},
|
|
{"PEXTUW", T5,"011100SSSSSTTTTTddddd10010101000",MMI1, PEXTUW, (NONE)},
|
|
|
|
{"PHMADDH",T5,"011100SSSSSTTTTTddddd10001001001",MMI2, PHMADDH, (NONE)},
|
|
{"PHMSUBH",T5,"011100SSSSSTTTTTddddd10101001001",MMI2, PHMADDH, (SUBTRACT)},
|
|
|
|
{"PINTH", T5,"011100SSSSSTTTTTddddd01010001001",MMI2, PINTH, (NONE)},
|
|
{"PINTOH", T5,"011100SSSSSTTTTTddddd01010101001",MMI3, PINTOH, (NONE)},
|
|
|
|
{"PLZCW", T5,"011100SSSSS00000ddddd00000000100",MMINORM,PLZCW, (NONE)},
|
|
|
|
{"PMADDH", T5,"011100SSSSSTTTTTddddd10000001001",MMI2, PMULTH, (ADDITION)},
|
|
{"PMADDUW",T5,"011100SSSSSTTTTTddddd00000101001",MMI3, PMULTW, (ADDITION | UNSIGNED)},
|
|
{"PMADDW", T5,"011100SSSSSTTTTTddddd00000001001",MMI2, PMULTW, (ADDITION)},
|
|
|
|
{"PMAXH", T5,"011100SSSSSTTTTTddddd00111001000",MMI0, PMAXMIN, (GT | HALFWORD)},
|
|
{"PMAXW", T5,"011100SSSSSTTTTTddddd00011001000",MMI0, PMAXMIN, (GT | WORD)},
|
|
|
|
{"PMFHI", T5,"0111000000000000ddddd01000001001",MMI2, PMXX, (HI|FROM)},
|
|
{"PMFLO", T5,"0111000000000000ddddd01001001001",MMI2, PMXX, (LO|FROM)},
|
|
|
|
{"PMFHL", T5,"0111000000000000dddddaaaaa110000",MMINORM,PMFHL, (NONE)},
|
|
|
|
{"PMINH", T5,"011100SSSSSTTTTTddddd00111101000",MMI1, PMAXMIN, (LT | HALFWORD)},
|
|
{"PMINW", T5,"011100SSSSSTTTTTddddd00011101000",MMI1, PMAXMIN, (LT | WORD)},
|
|
|
|
{"PMSUBH", T5,"011100SSSSSTTTTTddddd10100001001",MMI2, PMULTH, (SUBTRACT)},
|
|
{"PMSUBW", T5,"011100SSSSSTTTTTddddd00100001001",MMI2, PMULTW, (SUBTRACT)},
|
|
|
|
{"PMTHI", T5,"011100SSSSS000000000001000101001",MMI3, PMXX, (HI|TO)},
|
|
{"PMTLO", T5,"011100SSSSS000000000001001101001",MMI3, PMXX, (LO|TO)},
|
|
|
|
{"PMTHL.LW",T5,"011100SSSSS000000000000000110001",MMINORM,PMTHL, (NONE)},
|
|
|
|
{"PMULTH", T5,"011100SSSSSTTTTTddddd11100001001",MMI2, PMULTH, (NONE)},
|
|
{"PMULTUW",T5,"011100SSSSSTTTTTddddd01100101001",MMI3, PMULTW, (UNSIGNED)},
|
|
{"PMULTW", T5,"011100SSSSSTTTTTddddd01100001001",MMI2, PMULTW, (NONE)},
|
|
|
|
{"PNOR", T5,"011100SSSSSTTTTTddddd10011101001",MMI3, POP, (POP_NOR)},
|
|
{"POR", T5,"011100SSSSSTTTTTddddd10010101001",MMI3, POP, (POP_OR)},
|
|
|
|
{"PPAC5", T5,"01110000000TTTTTddddd11111001000",MMI0, PPAC5, (NONE)},
|
|
|
|
{"PPACB", T5,"011100SSSSSTTTTTddddd11011001000",MMI0, PPACB, (NONE)},
|
|
{"PPACH", T5,"011100SSSSSTTTTTddddd10111001000",MMI0, PPACH, (NONE)},
|
|
{"PPACW", T5,"011100SSSSSTTTTTddddd10011001000",MMI0, PPACW, (NONE)},
|
|
|
|
{"PREVH", T5,"01110000000TTTTTddddd11011001001",MMI2, PREVH, (NONE)},
|
|
{"PROT3W", T5,"01110000000TTTTTddddd11111001001",MMI2, PROT3W, (NONE)},
|
|
|
|
{"PSLLH", T5,"01110000000TTTTTdddddaaaaa110100",MMINORM,PSHIFT, (LEFT | LOGICAL | HALFWORD)},
|
|
{"PSLLVW", T5,"011100SSSSSTTTTTddddd00010001001",MMI2, PSLLVW, (NONE)},
|
|
{"PSLLW", T5,"01110000000TTTTTdddddaaaaa111100",MMINORM,PSHIFT, (LEFT | LOGICAL | WORD)},
|
|
|
|
{"PSRAH", T5,"01110000000TTTTTdddddaaaaa110111",MMINORM,PSHIFT, (RIGHT | ARITHMETIC | HALFWORD)},
|
|
{"PSRAVW", T5,"011100SSSSSTTTTTddddd00011101001",MMI3, PSRAVW, (NONE)},
|
|
{"PSRAW", T5,"01110000000TTTTTdddddaaaaa111111",MMINORM,PSHIFT, (RIGHT | ARITHMETIC | WORD)},
|
|
|
|
{"PSRLH", T5,"01110000000TTTTTdddddaaaaa110110",MMINORM,PSHIFT, (RIGHT | LOGICAL | HALFWORD)},
|
|
{"PSRLVW", T5,"011100SSSSSTTTTTddddd00011001001",MMI2, PSRLVW, (NONE)},
|
|
{"PSRLW", T5,"01110000000TTTTTdddddaaaaa111110",MMINORM,PSHIFT, (RIGHT | LOGICAL | WORD)},
|
|
|
|
{"PSUBB", T5,"011100SSSSSTTTTTddddd01001001000",MMI0, PADD, (SUBTRACT | BYTE)},
|
|
{"PSUBH", T5,"011100SSSSSTTTTTddddd00101001000",MMI0, PADD, (SUBTRACT | HALFWORD)},
|
|
{"PSUBSB", T5,"011100SSSSSTTTTTddddd11001001000",MMI0, PADD, (SUBTRACT | SATURATE | BYTE )},
|
|
{"PSUBSH", T5,"011100SSSSSTTTTTddddd10101001000",MMI0, PADD, (SUBTRACT | SATURATE | HALFWORD)},
|
|
{"PSUBSW", T5,"011100SSSSSTTTTTddddd10001001000",MMI0, PADD, (SUBTRACT | SATURATE | WORD)},
|
|
{"PSUBUB", T5,"011100SSSSSTTTTTddddd11001101000",MMI1, PADD, (SUBTRACT | UNSIGNED | BYTE)},
|
|
{"PSUBUH", T5,"011100SSSSSTTTTTddddd10101101000",MMI1, PADD, (SUBTRACT | UNSIGNED | HALFWORD)},
|
|
{"PSUBUW", T5,"011100SSSSSTTTTTddddd10001101000",MMI1, PADD, (SUBTRACT | UNSIGNED | WORD)},
|
|
{"PSUBW", T5,"011100SSSSSTTTTTddddd00001001000",MMI0, PADD, (SUBTRACT | WORD)},
|
|
|
|
{"PXOR", T5,"011100SSSSSTTTTTddddd10011001001",MMI2, POP, (POP_XOR)},
|
|
/* end-sanitize-r5900 */
|
|
|
|
{"PREF", G8,"110011sssssnnnnnyyyyyyyyyyyyyyyy",NORMAL, PREFETCH, (NONE)},
|
|
{"PREFX", 4,"010011sssssgggggvvvvv00000001111",COP1X, FPPREFX, (FP)},
|
|
|
|
/* start-sanitize-r5900 */
|
|
{"QFSRV", T5,"011100SSSSSTTTTTddddd11011101000",MMI1, QFSRV, (NONE)},
|
|
/* end-sanitize-r5900 */
|
|
|
|
{"RECIP", 4,"01000110mmm00000vvvvvrrrrr010101",COP1, FPRECIP, (FP)},
|
|
{"ROUND.L", 3,"01000110mmm00000vvvvvrrrrr001000",COP1, FPROUND, (FP | FIXED | DOUBLEWORD)},
|
|
{"ROUND.W", 2,"01000110mmm00000vvvvvrrrrr001100",COP1, FPROUND, (FP | FIXED | WORD)},
|
|
{"RSQRT", 4,"01000110mmm00000vvvvvrrrrr010110",COP1, FPSQRT, (FP | RECIP)},
|
|
{"SB", 1,"101000sssssgggggyyyyyyyyyyyyyyyy",NORMAL, STORE, (BYTE)},
|
|
{"SC", 2,"111000sssssgggggwwwwwwwwwwwwwwww",NORMAL, STORE, (WORD | ATOMIC)},
|
|
{"SCD", 3,"111100sssssgggggeeeeeeeeeeeeeeee",NORMAL, STORE, (DOUBLEWORD | ATOMIC)},
|
|
{"SD", 3,"111111sssssgggggeeeeeeeeeeeeeeee",NORMAL, STORE, (DOUBLEWORD)},
|
|
{"SDC1", 2,"111101sssssttttteeeeeeeeeeeeeeee",NORMAL, STORE, (DOUBLEWORD | COPROC)},
|
|
{"SDBBP", G7,"000000????????????????????001110",SPECIAL,SDBBP, (NOARG)},
|
|
{"SDC2", 2,"111110sssssttttteeeeeeeeeeeeeeee",NORMAL, STORE, (DOUBLEWORD | COPROC)},
|
|
{"SDL", 3,"101100sssssgggggyyyyyyyyyyyyyyyy",NORMAL, STORE, (DOUBLEWORD | LEFT)},
|
|
{"SDR", 3,"101101sssssgggggyyyyyyyyyyyyyyyy",NORMAL, STORE, (DOUBLEWORD | RIGHT)},
|
|
{"SDXC1", G3,"010011sssssgggggvvvvv00000001001",COP1X, STORE, (FP | DOUBLEWORD | COPROC | REG)},
|
|
{"SH", 1,"101001sssssggggghhhhhhhhhhhhhhhh",NORMAL, STORE, (HALFWORD)},
|
|
{"SLL", 1,"00000000000gggggdddddaaaaa000000",SPECIAL,SHIFT, (WORD | LEFT | LOGICAL)}, /* rd = rt << sa */
|
|
{"SLLV", 1,"000000ooooogggggddddd00000000100",SPECIAL,SHIFT, (WORD | LEFT | LOGICAL)}, /* rd = rt << rs - with "SLL" depends on "s" and "a" field values */
|
|
{"SLT", 1,"000000sssssgggggddddd00000101010",SPECIAL,SET, (LT)},
|
|
{"SLTI", 1,"001010ssssstttttiiiiiiiiiiiiiiii",NORMAL, SET, (LT)},
|
|
{"SLTU", 1,"000000sssssgggggddddd00000101011",SPECIAL,SET, (LT | UNSIGNED)},
|
|
{"SLTIU", 1,"001011ssssstttttiiiiiiiiiiiiiiii",NORMAL, SET, (LT | UNSIGNED)},
|
|
/* start-sanitize-r5900 */
|
|
{"SQ", T5,"011111sssssTTTTTeeeeeeeeeeeeeeee",NORMAL, STORE, (QUADWORD)},
|
|
/* end-sanitize-r5900 */
|
|
{"SQRT", 2,"01000110mmm00000vvvvvrrrrr000100",COP1, FPSQRT, (FP)},
|
|
{"SRA", 1,"00000000000gggggdddddaaaaa000011",SPECIAL,SHIFT, (WORD | WORD32 | RIGHT | ARITHMETIC)},
|
|
{"SRAV", 1,"000000ooooogggggddddd00000000111",SPECIAL,SHIFT, (WORD | WORD32 | RIGHT | ARITHMETIC)},
|
|
{"SRL", 1,"00000000000gggggdddddaaaaa000010",SPECIAL,SHIFT, (WORD | WORD32 | RIGHT | LOGICAL)},
|
|
{"SRLV", 1,"000000ooooogggggddddd00000000110",SPECIAL,SHIFT, (WORD | WORD32 | RIGHT | LOGICAL)},
|
|
{"SUB", 1,"000000sssssgggggddddd00000100010",SPECIAL,SUB, (WORD | WORD32 | OVERFLOW)},
|
|
{"SUB", 1,"01000110mmmkkkkkvvvvvrrrrr000001",COP1, FPSUB, (FP)},
|
|
{"SUBU", 1,"000000sssssgggggddddd00000100011",SPECIAL,SUB, (WORD | WORD32)},
|
|
{"SW", 1,"101011sssssgggggwwwwwwwwwwwwwwww",NORMAL, STORE, (WORD)},
|
|
{"SWC1", 1,"111001ssssstttttwwwwwwwwwwwwwwww",NORMAL, STORE, (WORD | COPROC)},
|
|
{"SWC2", 1,"111010ssssstttttwwwwwwwwwwwwwwww",NORMAL, STORE, (WORD | COPROC)},
|
|
{"SWL", 1,"101010sssssgggggyyyyyyyyyyyyyyyy",NORMAL, STORE, (WORD | LEFT)},
|
|
{"SWR", 1,"101110sssssgggggyyyyyyyyyyyyyyyy",NORMAL, STORE, (WORD | RIGHT)},
|
|
{"SWXC1", G3,"010011sssssgggggvvvvv00000001000",COP1X, STORE, (FP | WORD | COPROC | REG)},
|
|
{"SYNC", G4,"000000000000000000000aaaaa001111",SPECIAL,SYNC, (NONE)}, /* z = 5bit stype field */
|
|
{"SYSCALL", 1,"000000????????????????????001100",SPECIAL,SYSCALL, (NOARG)},
|
|
{"TEQ", 2,"000000sssssggggg??????????110100",SPECIAL,TRAP, (EQ)},
|
|
{"TEQI", 2,"000001sssss01100iiiiiiiiiiiiiiii",REGIMM, TRAP, (EQ)},
|
|
{"TGE", 2,"000000sssssggggg??????????110000",SPECIAL,TRAP, (GT | EQ)},
|
|
{"TGEI", 2,"000001sssss01000iiiiiiiiiiiiiiii",REGIMM, TRAP, (GT | EQ)},
|
|
{"TGEIU", 2,"000001sssss01001iiiiiiiiiiiiiiii",REGIMM, TRAP, (GT | EQ | UNSIGNED)},
|
|
{"TGEU", 2,"000000sssssggggg??????????110001",SPECIAL,TRAP, (GT | EQ | UNSIGNED)},
|
|
{"TLT", 2,"000000sssssggggg??????????110010",SPECIAL,TRAP, (LT)},
|
|
{"TLTI", 2,"000001sssss01010iiiiiiiiiiiiiiii",REGIMM, TRAP, (LT)},
|
|
{"TLTIU", 2,"000001sssss01011iiiiiiiiiiiiiiii",REGIMM, TRAP, (LT | UNSIGNED)},
|
|
{"TLTU", 2,"000000sssssggggg??????????110011",SPECIAL,TRAP, (LT | UNSIGNED)},
|
|
{"TNE", 2,"000000sssssggggg??????????110110",SPECIAL,TRAP, (NOT | EQ)},
|
|
{"TNEI", 2,"000001sssss01110iiiiiiiiiiiiiiii",REGIMM, TRAP, (NOT | EQ)},
|
|
{"TRUNC.L", 3,"01000110mmm00000vvvvvrrrrr001001",COP1, FPTRUNC, (FP | FIXED | DOUBLEWORD)},
|
|
{"TRUNC.W", 2,"01000110mmm00000vvvvvrrrrr001101",COP1, FPTRUNC, (FP | FIXED | WORD)},
|
|
{"XOR", 1,"000000sssssgggggddddd00000100110",SPECIAL,XOR, (NONE)},
|
|
{"XORI", 1,"001110ssssstttttzzzzzzzzzzzzzzzz",NORMAL, XOR, (NONE)},
|
|
{"CACHE", G6,"101111sssssnnnnnyyyyyyyyyyyyyyyy",NORMAL, CACHE, (NONE)},
|
|
{"<INT>", 1,"111011sssssgggggyyyyyyyyyyyyyyyy",NORMAL, RSVD, (NONE)},
|
|
};
|
|
|
|
static const struct instruction MIPS16_DECODE[] = {
|
|
{"ADDIU", 1, "01000xxxddd04444", RRI_A, ADD, WORD | WORD32 },
|
|
{"ADDIU8", 1, "01001wwwkkkkkkkk", RI, ADD, WORD | WORD32 },
|
|
{"ADJSP", 1, "01100011KKKKKKKKS", I8, ADD, WORD | WORD32 },
|
|
{"ADDIUPC", 1, "00001dddAAAAAAAAP", RI, ADD, WORD | WORD32 },
|
|
{"ADDIUSP", 1, "00000dddAAAAAAAAs", RI, ADD, WORD | WORD32 },
|
|
{"ADDU", 1, "11100xxxyyyddd01", RRR, ADD, WORD | WORD32 },
|
|
{"AND", 1, "11101wwwyyy01100", RR, AND, NONE },
|
|
{"B", 1, "00010qqqqqqqqqqqzZ", I, BRANCH, EQ },
|
|
{"BEQZ", 1, "00100xxxppppppppz", RI, BRANCH, EQ },
|
|
{"BNEZ", 1, "00101xxxppppppppz", RI, BRANCH, NOT | EQ },
|
|
{"BREAK", 1, "01100??????00101", RR, BREAK, NOARG },
|
|
{"BTEQZ", 1, "01100000pppppppptz", I8, BRANCH, EQ },
|
|
{"BTNEZ", 1, "01100001pppppppptz", I8, BRANCH, NOT | EQ },
|
|
{"CMP", 1, "11101xxxyyy01010T", RR, XOR, NONE },
|
|
{"CMPI", 1, "01110xxxUUUUUUUUT", RI, XOR, NONE },
|
|
{"DADDIU", 3, "01000xxxddd14444", RRI_A, ADD, DOUBLEWORD },
|
|
{"DADDIU5", 3, "11111101wwwjjjjj", RI64, ADD, DOUBLEWORD },
|
|
{"DADJSP", 3, "11111011KKKKKKKKS", I64, ADD, DOUBLEWORD },
|
|
{"DADIUPC", 3, "11111110dddEEEEEP", RI64, ADD, DOUBLEWORD },
|
|
{"DADIUSP", 3, "11111111dddEEEEEs", RI64, ADD, DOUBLEWORD },
|
|
{"DADDU", 3, "11100xxxyyyddd00", RRR, ADD, DOUBLEWORD },
|
|
{"DDIV", 3, "11101xxxyyy11110", RR, DIV, DOUBLEWORD | HI | LO },
|
|
{"DDIVU", 3, "11101xxxyyy11111", RR, DIV, DOUBLEWORD | UNSIGNED | HI | LO },
|
|
{"DIV", 1, "11101xxxyyy11010", RR, DIV, WORD | WORD32 | SIGNEXTEND | HI | LO },
|
|
{"DIVU", 1, "11101xxxyyy11011", RR, DIV, WORD | WORD32 | UNSIGNED | SIGNEXTEND | HI | LO },
|
|
{"DMULT", 3, "11101xxxyyy11100", RR, MUL, DOUBLEWORD | HI | LO },
|
|
{"DMULTU", 3, "11101xxxyyy11101", RR, MUL, DOUBLEWORD | UNSIGNED | HI | LO },
|
|
{"DSLL", 3, "00110dddyyy[[[01", ISHIFT, SHIFT, DOUBLEWORD | LEFT | LOGICAL },
|
|
{"DSLLV", 3, "11101xxxvvv10100", RR, SHIFT, DOUBLEWORD | LEFT | LOGICAL | REG },
|
|
{"DSRA", 3, "11101]]]vvv10011", RR, SHIFT, DOUBLEWORD | RIGHT | ARITHMETIC },
|
|
{"DSRAV", 3, "11101xxxvvv10111", RR, SHIFT, DOUBLEWORD | RIGHT | ARITHMETIC | REG},
|
|
{"DSRL", 3, "11101]]]vvv01000", RR, SHIFT, DOUBLEWORD | RIGHT | LOGICAL },
|
|
{"DSRLV", 3, "11101xxxvvv10110", RR, SHIFT, DOUBLEWORD | RIGHT | LOGICAL | REG},
|
|
{"DSUBU", 3, "11100xxxyyyddd10", RRR, SUB, DOUBLEWORD | UNSIGNED},
|
|
#if 0
|
|
/* FIXME: Should we handle these ourselves, or should we require an
|
|
emulation routine? */
|
|
{"EXIT", 1, "1110111100001000", RR, BREAK, EXIT },
|
|
{"ENTRY", 1, "11101??????01000", RR, BREAK, ENTRY },
|
|
#endif
|
|
{"EXTEND", 1, "11110eeeeeeeeeee", I, RSVD, NOARG },
|
|
{"JALR", 1, "11101xxx01000000R", RR, JUMP, LINK | REG },
|
|
{"JAL", 1, "00011aaaaaaaaaaa", I, JUMP, LINK },
|
|
{"JR", 1, "11101xxx00000000", RR, JUMP, NONE },
|
|
{"JRRA", 1, "1110100000100000r", RR, JUMP, NONE },
|
|
{"LB", 1, "10000xxxddd55555", RRI, LOAD, BYTE | SIGNEXTEND },
|
|
{"LBU", 1, "10100xxxddd55555", RRI, LOAD, BYTE },
|
|
{"LD", 3, "00111xxxdddDDDDD", RRI, LOAD, DOUBLEWORD },
|
|
{"LDPC", 3, "11111100dddDDDDDP", RI64, LOAD, DOUBLEWORD },
|
|
{"LDSP", 3, "11111000dddDDDDDs", RI64, LOAD, DOUBLEWORD },
|
|
{"LH", 1, "10001xxxdddHHHHH", RRI, LOAD, HALFWORD | SIGNEXTEND },
|
|
{"LHU", 1, "10101xxxdddHHHHH", RRI, LOAD, HALFWORD },
|
|
{"LI", 1, "01101dddUUUUUUUUZ", RI, OR, NONE },
|
|
{"LW", 1, "10011xxxdddWWWWW", RRI, LOAD, WORD | SIGNEXTEND },
|
|
{"LWPC", 1, "10110dddVVVVVVVVP", RI, LOAD, WORD | SIGNEXTEND },
|
|
{"LWSP", 1, "10010dddVVVVVVVVs", RI, LOAD, WORD | SIGNEXTEND },
|
|
{"LWU", 1, "10111xxxdddWWWWW", RRI, LOAD, WORD },
|
|
{"MFHI", 1, "11101ddd00010000", RR, MOVE, HI | LEFT },
|
|
{"MFLO", 1, "11101ddd00010010", RR, MOVE, LO | LEFT },
|
|
{"MOVR32", 1, "01100111dddXXXXXz", I8_MOVR32, OR, NONE },
|
|
{"MOV32R", 1, "01100101YYYYYxxxz", I8_MOV32R, OR, NONE },
|
|
{"MULT", 1, "11101xxxyyy11000", RR, MUL, WORD | WORD32 | HI | LO},
|
|
{"MULTU", 1, "11101xxxyyy11001", RR, MUL, WORD | WORD32 | UNSIGNED | HI | LO },
|
|
{"NEG", 1, "11101dddyyy01011Z", RR, SUB, WORD },
|
|
{"NOT", 1, "11101dddyyy01111Z", RR, OR, NOT },
|
|
{"OR", 1, "11101wwwyyy01101", RR, OR, NONE },
|
|
{"SB", 1, "11000xxxyyy55555", RRI, STORE, BYTE },
|
|
{"SDBBP", G7, "11100??????00001", RR, SDBBP, NOARG },
|
|
{"SD", 3, "01111xxxyyyDDDDD", RRI, STORE, DOUBLEWORD },
|
|
{"SDSP", 3, "11111001yyyDDDDDs", RI64, STORE, DOUBLEWORD },
|
|
{"SDRASP", 3, "11111010CCCCCCCCsQ", I64, STORE, DOUBLEWORD },
|
|
{"SH", 1, "11001xxxyyyHHHHH", RRI, STORE, HALFWORD },
|
|
{"SLL", 1, "00110dddyyy<<<00", ISHIFT, SHIFT, WORD | LEFT | LOGICAL },
|
|
{"SLLV", 1, "11101xxxvvv00100", RR, SHIFT, WORD | LEFT | LOGICAL | REG},
|
|
{"SLT", 1, "11101xxxyyy00010T", RR, SET, LT },
|
|
{"SLTI", 1, "01010xxx88888888T", RI, SET, LT },
|
|
{"SLTU", 1, "11101xxxyyy00011T", RR, SET, LT | UNSIGNED },
|
|
{"SLTIU", 1, "01011xxx88888888T", RI, SET, LT | UNSIGNED },
|
|
{"SRA", 1, "00110dddyyy<<<11", ISHIFT, SHIFT, WORD | WORD32 | RIGHT | ARITHMETIC },
|
|
{"SRAV", 1, "11101xxxvvv00111", RR, SHIFT, WORD | WORD32 | RIGHT | ARITHMETIC | REG },
|
|
{"SRL", 1, "00110dddyyy<<<10", ISHIFT, SHIFT, WORD | WORD32 | RIGHT | LOGICAL },
|
|
{"SRLV", 1, "11101xxxvvv00110", RR, SHIFT, WORD | WORD32 | RIGHT | LOGICAL | REG },
|
|
{"SUBU", 1, "11100xxxyyyddd11", RRR, SUB, WORD | WORD32 },
|
|
{"SW", 1, "11011xxxyyyWWWWW", RRI, STORE, WORD },
|
|
{"SWSP", 1, "11010yyyVVVVVVVVs", RI, STORE, WORD },
|
|
{"SWRASP", 1, "01100010VVVVVVVVQs", I8, STORE, WORD },
|
|
{"XOR", 1, "11101wwwyyy01110", RR, XOR, NONE }
|
|
};
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
static void print_igen_insn_format PARAMS ((const char *bitmap,
|
|
inst_type mark,
|
|
int data_size,
|
|
const char *options,
|
|
const char *name));
|
|
|
|
static void
|
|
print_igen_insn_format (bitmap, mark, data_size, options, name)
|
|
const char *bitmap;
|
|
inst_type mark;
|
|
int data_size;
|
|
const char *options;
|
|
const char *name;
|
|
{
|
|
const char *chp;
|
|
char lch = *bitmap;
|
|
for (chp = bitmap; *chp != '\0'; chp++)
|
|
{
|
|
if ((isdigit (lch) && !isdigit (*chp))
|
|
|| (!isdigit (lch) && isdigit (*chp))
|
|
|| (!isdigit (lch) && !isdigit (*chp) && lch != *chp))
|
|
{
|
|
lch = *chp;
|
|
printf (",");
|
|
}
|
|
switch (*chp)
|
|
{
|
|
case '?':
|
|
printf ("*");
|
|
break;
|
|
case '<':
|
|
printf ("s"); /* good guess */
|
|
break;
|
|
default:
|
|
printf ("%c", *chp);
|
|
break;
|
|
}
|
|
}
|
|
printf (":");
|
|
switch (mark)
|
|
{
|
|
case NORMAL:
|
|
printf ("NORMAL");
|
|
break;
|
|
case SPECIAL:
|
|
printf ("SPECIAL");
|
|
break;
|
|
case REGIMM:
|
|
printf ("REGIMM");
|
|
break;
|
|
case COP1:
|
|
printf ("COP1");
|
|
break;
|
|
case COP1X:
|
|
printf ("COP1X");
|
|
break;
|
|
case COP1S: /* These instructions live in the reserved FP format values: 0..15,18-19,22-31 */
|
|
printf ("COP1S");
|
|
break;
|
|
|
|
case MMINORM:
|
|
printf ("MMINORM");
|
|
break;
|
|
case MMI0:
|
|
printf ("MMI0");
|
|
break;
|
|
case MMI1:
|
|
printf ("MMI1");
|
|
break;
|
|
case MMI2:
|
|
printf ("MMI2");
|
|
break;
|
|
case MMI3:
|
|
printf ("MMI3");
|
|
break;
|
|
|
|
/* mips16 encoding types. */
|
|
case I:
|
|
printf ("I");
|
|
break;
|
|
case RI:
|
|
printf ("RI");
|
|
break;
|
|
case RR:
|
|
printf ("RR");
|
|
break;
|
|
case RRI:
|
|
printf ("RRI");
|
|
break;
|
|
case RRR:
|
|
printf ("RRR");
|
|
break;
|
|
case RRI_A:
|
|
printf ("RRI_A");
|
|
break;
|
|
case ISHIFT:
|
|
printf ("ISHIFT");
|
|
break;
|
|
case I8:
|
|
printf ("I8");
|
|
break;
|
|
case I8_MOVR32:
|
|
printf ("I8_MOVR32");
|
|
break;
|
|
case I8_MOV32R:
|
|
printf ("I8_MOV32R");
|
|
break;
|
|
case I64:
|
|
printf ("I64");
|
|
break;
|
|
case RI64:
|
|
printf ("RI64");
|
|
break;
|
|
}
|
|
printf (":");
|
|
switch (data_size)
|
|
{
|
|
case DOUBLEWORD:
|
|
printf ("64");
|
|
break;
|
|
/* start-sanitize-r5900 */
|
|
case QUADWORD:
|
|
printf ("128");
|
|
break;
|
|
/* end-sanitize-r5900 */
|
|
case -1:
|
|
printf ("16");
|
|
break;
|
|
default:
|
|
printf ("32");
|
|
}
|
|
printf (":%s:%s\n", options, name);
|
|
}
|
|
|
|
static void print_igen_insn_models PARAMS ((unsigned int isa));
|
|
|
|
static void
|
|
print_igen_insn_models (isa)
|
|
unsigned int isa;
|
|
{
|
|
/* common mips ISAs */
|
|
switch ((isa & MASK_ISA))
|
|
{
|
|
case 1:
|
|
printf ("*mipsI:\n");
|
|
case 2:
|
|
printf ("*mipsII:\n");
|
|
case 3:
|
|
printf ("*mipsIII:\n");
|
|
/* start-sanitize-cygnus-never */
|
|
printf ("// %s-%s-%s\n", "start", "sanitize", "r5900");
|
|
/* end-sanitize-cygnus-never */
|
|
/* start-sanitize-r5900 */
|
|
printf ("*r5900:\n");
|
|
/* end-sanitize-r5900 */
|
|
/* start-sanitize-cygnus-never */
|
|
printf ("// %s-%s-%s\n", "end", "sanitize", "r5900");
|
|
/* end-sanitize-cygnus-never */
|
|
printf ("*r3900:\n");
|
|
/* start-sanitize-cygnus-never */
|
|
printf ("// %s-%s-%s\n", "start", "sanitize", "tx19");
|
|
/* end-sanitize-cygnus-never */
|
|
/* start-sanitize-tx19 */
|
|
printf ("*tx19:\n");
|
|
/* end-sanitize-tx19 */
|
|
/* start-sanitize-cygnus-never */
|
|
printf ("// %s-%s-%s\n", "end", "sanitize", "tx19");
|
|
/* end-sanitize-cygnus-never */
|
|
break;
|
|
default:
|
|
/* processor specific ISAs */
|
|
if ((isa & ARCH_VR4100))
|
|
printf ("*vr4100:\n");
|
|
/* start-sanitize-r5900 */
|
|
if ((isa & ARCH_R5900))
|
|
printf ("*r5900:\n");
|
|
/* end-sanitize-r5900 */
|
|
if ((isa & ARCH_R3900))
|
|
printf ("*r3900:\n");
|
|
}
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
static int bitmap_val PARAMS ((const char *, int, int));
|
|
static void build_mips16_operands PARAMS ((const char *));
|
|
static void build_instruction
|
|
PARAMS ((int, unsigned int, int, const struct instruction *));
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
static char*
|
|
name_for_data_len( insn )
|
|
struct instruction* insn;
|
|
{
|
|
if (GETDATASIZEINSN(insn) == BYTE)
|
|
return "BYTE";
|
|
|
|
else if (GETDATASIZEINSN(insn) == HALFWORD)
|
|
return "HALFWORD";
|
|
|
|
else if (GETDATASIZEINSN(insn) == WORD)
|
|
return "WORD";
|
|
|
|
else if (GETDATASIZEINSN(insn) == DOUBLEWORD)
|
|
return "DOUBLEWORD";
|
|
|
|
/* start-sanitize-r5900 */
|
|
else if (GETDATASIZEINSN(insn) == QUADWORD)
|
|
return "QUADWORD";
|
|
|
|
/* end-sanitize-r5900 */
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static char*
|
|
letter_for_data_len( insn )
|
|
struct instruction* insn;
|
|
{
|
|
if (GETDATASIZEINSN(insn) == BYTE)
|
|
return "B";
|
|
|
|
else if (GETDATASIZEINSN(insn) == HALFWORD)
|
|
return "H";
|
|
|
|
else if (GETDATASIZEINSN(insn) == WORD)
|
|
return "W";
|
|
|
|
else if (GETDATASIZEINSN(insn) == DOUBLEWORD)
|
|
return "D";
|
|
|
|
/* start-sanitize-r5900 */
|
|
else if (GETDATASIZEINSN(insn) == QUADWORD)
|
|
return "Q";
|
|
|
|
/* end-sanitize-r5900 */
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static char*
|
|
type_for_data_len( insn , is_signed )
|
|
struct instruction* insn;
|
|
int is_signed;
|
|
{
|
|
if (GETDATASIZEINSN(insn) == BYTE)
|
|
return is_signed ? "int" : "unsigned int";
|
|
|
|
else if (GETDATASIZEINSN(insn) == HALFWORD)
|
|
return is_signed ? "int" : "unsigned int";
|
|
|
|
else if (GETDATASIZEINSN(insn) == WORD)
|
|
return is_signed ? "signed64" : "unsigned64";
|
|
|
|
else if (GETDATASIZEINSN(insn) == DOUBLEWORD)
|
|
return 0;
|
|
|
|
/* start-sanitize-r5900 */
|
|
else if (GETDATASIZEINSN(insn) == QUADWORD)
|
|
return 0;
|
|
|
|
/* end-sanitize-r5900 */
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static char*
|
|
max_for_data_len( insn )
|
|
struct instruction* insn;
|
|
{
|
|
if (GETDATASIZEINSN(insn) == BYTE)
|
|
return "127";
|
|
|
|
else if (GETDATASIZEINSN(insn) == HALFWORD)
|
|
return "32767";
|
|
|
|
else if (GETDATASIZEINSN(insn) == WORD)
|
|
return "(int)0x7FFFFFFF";
|
|
|
|
else if (GETDATASIZEINSN(insn) == DOUBLEWORD)
|
|
return 0;
|
|
|
|
/* start-sanitize-r5900 */
|
|
else if (GETDATASIZEINSN(insn) == QUADWORD)
|
|
return 0;
|
|
|
|
/* end-sanitize-r5900 */
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static char*
|
|
min_for_data_len( insn )
|
|
struct instruction* insn;
|
|
{
|
|
if (GETDATASIZEINSN(insn) == BYTE)
|
|
return "-128";
|
|
|
|
else if (GETDATASIZEINSN(insn) == HALFWORD)
|
|
return "-32768";
|
|
|
|
else if (GETDATASIZEINSN(insn) == WORD)
|
|
return "(int)0x80000000";
|
|
|
|
else if (GETDATASIZEINSN(insn) == DOUBLEWORD)
|
|
return 0;
|
|
|
|
/* start-sanitize-r5900 */
|
|
else if (GETDATASIZEINSN(insn) == QUADWORD)
|
|
return 0;
|
|
|
|
/* end-sanitize-r5900 */
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static char*
|
|
umax_for_data_len( insn )
|
|
struct instruction* insn;
|
|
{
|
|
if (GETDATASIZEINSN(insn) == BYTE)
|
|
return "0xFF";
|
|
|
|
else if (GETDATASIZEINSN(insn) == HALFWORD)
|
|
return "0xFFFF";
|
|
|
|
else if (GETDATASIZEINSN(insn) == WORD)
|
|
return "0xFFFFFFFF";
|
|
|
|
else if (GETDATASIZEINSN(insn) == DOUBLEWORD)
|
|
return 0;
|
|
|
|
/* start-sanitize-r5900 */
|
|
else if (GETDATASIZEINSN(insn) == QUADWORD)
|
|
return 0;
|
|
|
|
/* end-sanitize-r5900 */
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static char*
|
|
bits_for_data_len( insn )
|
|
struct instruction* insn;
|
|
{
|
|
if (GETDATASIZEINSN(insn) == BYTE)
|
|
return "8";
|
|
|
|
else if (GETDATASIZEINSN(insn) == HALFWORD)
|
|
return "16";
|
|
|
|
else if (GETDATASIZEINSN(insn) == WORD)
|
|
return "32";
|
|
|
|
else if (GETDATASIZEINSN(insn) == DOUBLEWORD)
|
|
return "64";
|
|
|
|
/* start-sanitize-r5900 */
|
|
else if (GETDATASIZEINSN(insn) == QUADWORD)
|
|
return "128";
|
|
|
|
/* end-sanitize-r5900 */
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
|
|
void
|
|
convert_bitmap(bitmap,onemask,zeromask,dontmask)
|
|
char *bitmap;
|
|
unsigned int *onemask, *zeromask, *dontmask;
|
|
{
|
|
int loop; /* current bitmap position */
|
|
int lastsp = -1; /* last bitmap field starting position */
|
|
int lastoe = -1; /* last bitmap field encoding */
|
|
|
|
*onemask = 0x00000000;
|
|
*zeromask = 0x00000000;
|
|
*dontmask = 0x00000000;
|
|
|
|
if (strlen(bitmap) != 32) {
|
|
fprintf(stderr,"Invalid bitmap string - not 32 characters long \"%s\"\n",bitmap);
|
|
exit(3);
|
|
}
|
|
|
|
for (loop = 0; (loop < 32); loop++) {
|
|
int oefield ;
|
|
for (oefield = 0; (oefield < (sizeof(opfields) / sizeof(struct operand_encoding))); oefield++)
|
|
if (bitmap[31 - loop] == opfields[oefield].id)
|
|
break;
|
|
if (oefield < (sizeof(opfields) / sizeof(struct operand_encoding))) {
|
|
if ((lastoe != -1) && (lastoe != oefield))
|
|
if ((loop - lastsp) != (opfields[lastoe].flen)) {
|
|
fprintf(stderr,"Invalid field length %d for bitmap field '%c' (0x%02X) (should be %d) : bitmap = \"%s\"\n",(loop - lastsp),(((bitmap[31 - loop] < 0x20) || (bitmap[31 - loop] >= 0x7F)) ? '.' : bitmap[31 - loop]),bitmap[31 - loop],opfields[lastoe].flen,bitmap);
|
|
exit(4);
|
|
}
|
|
|
|
switch (bitmap[31 - loop]) {
|
|
case '0' : /* fixed value */
|
|
*zeromask |= (1 << loop);
|
|
lastsp = loop;
|
|
lastoe = -1;
|
|
break;
|
|
|
|
case '1' : /* fixed value */
|
|
*onemask |= (1 << loop);
|
|
lastsp = loop;
|
|
lastoe = -1;
|
|
break;
|
|
|
|
case '?' : /* fixed value */
|
|
*dontmask |= (1 << loop);
|
|
lastsp = loop;
|
|
lastoe = -1;
|
|
break;
|
|
|
|
default : /* check character encoding */
|
|
{
|
|
if (opfields[oefield].fpos != -1) {
|
|
/* If flag not set, then check starting position: */
|
|
if (lastoe != oefield) {
|
|
if (loop != opfields[oefield].fpos) {
|
|
fprintf(stderr,"Bitmap field '%c' (0x%02X) at wrong offset %d in bitmap \"%s\"\n",(((bitmap[31 - loop] < 0x20) || (bitmap[31 - loop] >= 0x7F)) ? '.' : bitmap[31 - loop]),bitmap[31 - loop],loop,bitmap);
|
|
exit(4);
|
|
}
|
|
lastsp = loop;
|
|
lastoe = oefield;
|
|
}
|
|
}
|
|
*dontmask |= (1 << loop);
|
|
}
|
|
break;
|
|
}
|
|
} else {
|
|
fprintf(stderr,"Unrecognised bitmap character '%c' (0x%02X) at offset %d in bitmap \"%s\"\n",(((bitmap[31 - loop] < 0x20) || (bitmap[31 - loop] >= 0x7F)) ? '.' : bitmap[31 - loop]),bitmap[31 - loop],loop,bitmap);
|
|
exit(4);
|
|
}
|
|
}
|
|
|
|
/* NOTE: Since we check for the position and size of fields when
|
|
parsing the "bitmap" above, we do *NOT* need to check that invalid
|
|
field combinations have been used. */
|
|
}
|
|
|
|
/* Get the value of a 16 bit bitstring for a given shift count and
|
|
number of bits. */
|
|
|
|
static int
|
|
bitmap_val (bitmap, shift, bits)
|
|
const char *bitmap;
|
|
int shift;
|
|
int bits;
|
|
{
|
|
const char *s;
|
|
int ret;
|
|
|
|
ret = 0;
|
|
s = bitmap + 16 - shift - bits;
|
|
for (; bits > 0; --bits)
|
|
{
|
|
ret <<= 1;
|
|
if (*s == '0')
|
|
;
|
|
else if (*s == '1')
|
|
ret |= 1;
|
|
else
|
|
abort ();
|
|
++s;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
static void
|
|
build_operands(doisa,features,insn)
|
|
int doisa;
|
|
unsigned int features;
|
|
instruction* insn;
|
|
{
|
|
int proc64 = ((features & FEATURE_PROC32) ? 0 : -1);
|
|
int finish_jump_flag = 0;
|
|
int check_mult = 0;
|
|
int check_condition_code = 0;
|
|
int sfield_used = 0;
|
|
int gfield_used = 0;
|
|
int any_operand = 0;
|
|
|
|
int current_field_id = -1;
|
|
int bitpos;
|
|
|
|
for (bitpos=0; bitpos<32; bitpos++) {
|
|
if (insn->bitmap[31-bitpos] != current_field_id)
|
|
{
|
|
int opindex;
|
|
|
|
current_field_id = insn->bitmap[31-bitpos];
|
|
|
|
for (opindex = 0; (opindex < (sizeof(opfields) / sizeof(operand_encoding))); opindex++)
|
|
if ((opfields[opindex].fpos != -1) && (opfields[opindex].id == insn->bitmap[31-bitpos])) {
|
|
|
|
any_operand = 1;
|
|
|
|
printf(" %s %s UNUSED = ",opfields[opindex].type,opfields[opindex].name);
|
|
|
|
if (opfields[opindex].flags & OP_SIGNX)
|
|
printf("SIGNEXTEND((%s)",opfields[opindex].type);
|
|
|
|
if (opfields[opindex].flags & OP_GPR)
|
|
printf("GPR[");
|
|
|
|
if (opfields[opindex].flags & OP_SHIFT2)
|
|
printf("(");
|
|
|
|
printf("((instruction >> %d) & 0x%08X)",opfields[opindex].fpos,((1 << opfields[opindex].flen) - 1));
|
|
|
|
if (opfields[opindex].flags & OP_SHIFT2)
|
|
printf(" << 2)");
|
|
|
|
if (opfields[opindex].flags & OP_GPR)
|
|
printf("]");
|
|
|
|
if (opfields[opindex].flags & OP_BITS5)
|
|
printf("&0x1F");
|
|
|
|
if (opfields[opindex].flags & OP_SIGNX)
|
|
printf(",%d)",(opfields[opindex].flen + ((opfields[opindex].flags & OP_SHIFT2) ? 2 : 0)));
|
|
|
|
printf(";\n");
|
|
|
|
if (opfields[opindex].flags & OP_GPR1)
|
|
{
|
|
printf(" %s %s1 = GPR1[",opfields[opindex].type,opfields[opindex].name);
|
|
printf("((instruction >> %d) & 0x%08X)",
|
|
opfields[opindex].fpos,
|
|
((1 << opfields[opindex].flen) - 1));
|
|
printf("];\n");
|
|
}
|
|
|
|
if (opfields[opindex].id == 'j')
|
|
finish_jump_flag = 1;
|
|
|
|
if (opfields[opindex].id == 'e')
|
|
check_mult = 8;
|
|
|
|
if (opfields[opindex].id == 'w')
|
|
check_mult = 4;
|
|
|
|
if (opfields[opindex].id == 'w')
|
|
check_mult = 2;
|
|
|
|
if (opfields[opindex].id == 'p')
|
|
check_condition_code = 1;
|
|
|
|
if (opfields[opindex].id == 's')
|
|
sfield_used = 1;
|
|
|
|
if (opfields[opindex].id == 'g')
|
|
gfield_used = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( !any_operand && !(insn->flags & NOARG)) {
|
|
fprintf(stderr,"Bitmap error: Instruction with no operand fields \"%s\"\n",insn->name) ;
|
|
exit(5) ;
|
|
}
|
|
|
|
/* Finish constructing the jump address if required: */
|
|
if (finish_jump_flag)
|
|
printf(" op1 |= (PC & ~0x0FFFFFFF); /* address of instruction in delay slot for the jump */\n");
|
|
|
|
/* Now perform required operand checks: */
|
|
|
|
/* The following code has been removed, since it seems perfectly
|
|
reasonable to have a non-aligned offset that is added to another
|
|
non-aligned base to create an aligned address. Some more
|
|
information on exactly what the MIPS IV specification requires is
|
|
needed before deciding on the best strategy. Experimentation with a
|
|
VR4300 suggests that we do not need to raise the warning. */
|
|
#if 0
|
|
/* For MIPS IV (and onwards), certain instruction operand values
|
|
will give undefined results. For the simulator we could
|
|
generate explicit exceptions (i.e. ReservedInstruction) to
|
|
make it easier to spot invalid use. However, for the moment we
|
|
just raise a warning. NOTE: This is a different check to the
|
|
later decoding, which checks for the final address being
|
|
valid. */
|
|
|
|
if (check_mult != 0 && check_mult != 1) {
|
|
printf(" if (instruction & 0x%1X)\n", check_mult);
|
|
printf(" {\n");
|
|
/* NOTE: If we change this to a SignalException(), we must
|
|
ensure that the following opcode processing is not
|
|
executed. i.e. the code falls straight out to the simulator
|
|
control loop. */
|
|
printf(" sim_io_eprintf(sd,\"Instruction has lo-order offset bits set in instruction\\n\");\n");
|
|
printf(" }\n");
|
|
}
|
|
#endif
|
|
|
|
/* The extended condition codes only appeared in ISA IV */
|
|
if (check_condition_code && (doisa < 4)) {
|
|
printf(" if (condition_code != 0)\n");
|
|
printf(" {\n");
|
|
printf(" SignalException(ReservedInstruction,instruction);\n");
|
|
printf(" }\n");
|
|
printf(" else\n");
|
|
}
|
|
|
|
if ((insn->flags & WORD32) && (GETDATASIZEINSN(insn) != WORD)) {
|
|
fprintf(stderr,"Error in opcode table: WORD32 set for non-WORD opcode\n");
|
|
exit(1);
|
|
}
|
|
|
|
#if 1
|
|
/* The R4000 book differs slightly from the MIPS IV ISA
|
|
manual. An example is the sign-extension of a 64-bit processor
|
|
SUBU operation, and what is meant by an Undefined Result. This
|
|
is now provided purely as a warning. After examining a HW
|
|
implementation, this is now purely a warning... and the actual
|
|
operation is performed, with possibly undefined results. */
|
|
if (((insn->flags & WORD32) && proc64) && (features & FEATURE_WARN_RESULT)) {
|
|
/* The compiler should optimise out an OR with zero */
|
|
printf(" if (%s | %s)\n",(sfield_used ? "NOTWORDVALUE(op1)" : "0"),(gfield_used ? "NOTWORDVALUE(op2)" : "0"));
|
|
printf(" UndefinedResult();\n") ;
|
|
}
|
|
#else
|
|
/* Check that the source is a 32bit value */
|
|
if ((insn->flags & WORD32) && proc64) {
|
|
/* The compiler should optimise out an OR with zero */
|
|
printf(" if (%s | %s)\n",(sfield_used ? "NOTWORDVALUE(op1)" : "0"),(gfield_used ? "NOTWORDVALUE(op2)" : "0"));
|
|
printf(" UndefinedResult();\n") ;
|
|
printf(" else\n") ;
|
|
}
|
|
#endif
|
|
|
|
return;
|
|
}
|
|
|
|
/* The mips16 operand table. */
|
|
|
|
struct mips16_op
|
|
{
|
|
/* The character which appears in the bitmap string. */
|
|
int type;
|
|
/* The type of the variable in the simulator. */
|
|
const char *vartype;
|
|
/* The name of the variable in the simulator. */
|
|
const char *name;
|
|
/* The number of bits. */
|
|
int nbits;
|
|
/* The number of bits when extended (zero if can not be extended). */
|
|
int extbits;
|
|
/* The amount by which the short form is shifted when it is used;
|
|
for example, the sw instruction has a shift count of 2. */
|
|
int shift;
|
|
/* Flags. */
|
|
int flags;
|
|
};
|
|
|
|
/* Flags which appears in the mips16 operand table. */
|
|
|
|
/* Whether this is a mips16 register index. */
|
|
#define MIPS16_REG16 (0x1)
|
|
/* Whether this is a register value. */
|
|
#define MIPS16_REGVAL (0x2)
|
|
/* Whether this is a swapped mips32 register index (MOV32R) */
|
|
#define MIPS16_REG32_SWAPPED (0x4)
|
|
/* Whether this index is also the destination register. */
|
|
#define MIPS16_DESTREG (0x8)
|
|
/* Whether the short form is unsigned. */
|
|
#define MIPS16_UNSP (0x10)
|
|
/* Whether the extended form is unsigned. */
|
|
#define MIPS16_EXTU (0x20)
|
|
/* Implicit stack pointer. */
|
|
#define MIPS16_SP (0x40)
|
|
/* Implicit program counter. */
|
|
#define MIPS16_PC (0x80)
|
|
/* Implicit $0. */
|
|
#define MIPS16_ZERO (0x100)
|
|
/* Implicit $24. */
|
|
#define MIPS16_TREG (0x200)
|
|
/* Implicit $31. */
|
|
#define MIPS16_RA (0x400)
|
|
/* Jump address. */
|
|
#define MIPS16_JUMP_ADDR (0x800)
|
|
/* Branch offset. */
|
|
#define MIPS16_BRANCH (0x1000)
|
|
|
|
/* The mips16 operand table. */
|
|
|
|
static const struct mips16_op mips16_op_table[] =
|
|
{
|
|
{ 'd', "int", "destreg", 3, 0, 0, MIPS16_REG16 },
|
|
{ 'x', "t_reg", "op1", 3, 0, 0, MIPS16_REG16 | MIPS16_REGVAL },
|
|
{ 'w', "t_reg", "op1", 3, 0, 0, MIPS16_REG16|MIPS16_REGVAL|MIPS16_DESTREG},
|
|
{ 'y', "t_reg", "op2", 3, 0, 0, MIPS16_REG16 | MIPS16_REGVAL },
|
|
{ 'v', "t_reg", "op2", 3, 0, 0, MIPS16_REG16|MIPS16_REGVAL|MIPS16_DESTREG },
|
|
{ 'X', "t_reg", "op1", 5, 0, 0, MIPS16_REGVAL },
|
|
{ 'Y', "int", "destreg", 5, 0, 0, MIPS16_REG32_SWAPPED },
|
|
{ 'a', "ut_reg", "op1", 11, 0, 0, MIPS16_JUMP_ADDR },
|
|
{ 'e', "int", "ext", 11, 0, 0, 0 },
|
|
{ '<', "int", "op1", 3, 5, 0, MIPS16_UNSP | MIPS16_EXTU },
|
|
{ '>', "int", "op1", 3, 5, 0, MIPS16_UNSP | MIPS16_EXTU },
|
|
{ '[', "int", "op1", 3, 6, 0, MIPS16_UNSP | MIPS16_EXTU },
|
|
{ ']', "int", "op1", 3, 6, 0, MIPS16_UNSP | MIPS16_EXTU },
|
|
{ '4', "int", "op2", 4, 15, 0, 0 },
|
|
{ '5', "int", "offset", 5, 16, 0, MIPS16_UNSP },
|
|
{ 'H', "int", "offset", 5, 16, 1, MIPS16_UNSP },
|
|
{ 'W', "int", "offset", 5, 16, 2, MIPS16_UNSP },
|
|
{ 'D', "int", "offset", 5, 16, 3, MIPS16_UNSP },
|
|
{ 'j', "int", "op2", 5, 16, 0, 0 },
|
|
{ '8', "int", "op2", 8, 16, 0, MIPS16_UNSP },
|
|
{ 'V', "int", "offset", 8, 16, 2, MIPS16_UNSP },
|
|
{ 'C', "int", "offset", 8, 16, 3, MIPS16_UNSP },
|
|
{ 'U', "int", "op2", 8, 16, 0, MIPS16_UNSP | MIPS16_EXTU },
|
|
{ 'k', "int", "op2", 8, 16, 0, 0 },
|
|
{ 'K', "int", "op2", 8, 16, 3, 0 },
|
|
{ 'p', "int", "offset", 8, 16, 0, MIPS16_BRANCH },
|
|
{ 'q', "int", "offset", 11, 16, 0, MIPS16_BRANCH },
|
|
{ 'A', "int", "op2", 8, 16, 2, MIPS16_UNSP },
|
|
{ 'B', "int", "op2", 5, 16, 3, MIPS16_UNSP },
|
|
{ 'E', "int", "op2", 5, 16, 2, MIPS16_UNSP },
|
|
|
|
/* The remaining operands are special operands which encode implied
|
|
arguments. These only appear at the end of a bitmap string, and
|
|
do not represent actual bits. */
|
|
{ 's', "t_reg", "op1", 0, 0, 0, MIPS16_SP | MIPS16_REGVAL },
|
|
{ 'S', "t_reg", "op1", 0, 0, 0, MIPS16_SP|MIPS16_REGVAL|MIPS16_DESTREG },
|
|
{ 'P', "t_reg", "op1", 0, 0, 0, MIPS16_PC },
|
|
{ 'z', "t_reg", "op2", 0, 0, 0, MIPS16_ZERO },
|
|
{ 'Z', "t_reg", "op1", 0, 0, 0, MIPS16_ZERO },
|
|
{ 't', "t_reg", "op1", 0, 0, 0, MIPS16_TREG | MIPS16_REGVAL },
|
|
{ 'T', "int", "destreg", 0, 0, 0, MIPS16_TREG },
|
|
{ 'r', "t_reg", "op1", 0, 0, 0, MIPS16_RA | MIPS16_REGVAL },
|
|
{ 'R', "int", "destreg", 0, 0, 0, MIPS16_RA },
|
|
{ 'Q', "t_reg", "op2", 0, 0, 0, MIPS16_RA | MIPS16_REGVAL },
|
|
|
|
{ '\0', NULL, NULL, 0, 0, 0, 0 }
|
|
};
|
|
|
|
/* Build mips16 operands. */
|
|
|
|
static void
|
|
build_mips16_operands (bitmap)
|
|
const char *bitmap;
|
|
{
|
|
const char *s;
|
|
int start = -1;
|
|
const struct mips16_op *op = NULL;
|
|
const struct mips16_op *ops[3];
|
|
int opindex = 0;
|
|
int i;
|
|
|
|
for (s = bitmap; *s != '\0'; s++)
|
|
{
|
|
if (op != NULL)
|
|
{
|
|
if (op->type == *s)
|
|
continue;
|
|
|
|
/* Make sure we saw the right number of bits for that
|
|
operand. */
|
|
if (op->nbits != 0 && (s - bitmap) - op->nbits != start)
|
|
abort ();
|
|
op = NULL;
|
|
}
|
|
|
|
if (*s == '0' || *s == '1' || *s == '?')
|
|
continue;
|
|
|
|
start = s - bitmap;
|
|
|
|
for (op = mips16_op_table; op->type != *s; ++op)
|
|
if (op->type == '\0')
|
|
abort ();
|
|
|
|
printf (" %s %s = ", op->vartype, op->name);
|
|
if (op->nbits != 0)
|
|
printf ("(instruction >> %d) & 0x%x",
|
|
16 - (s - bitmap) - op->nbits,
|
|
(1 << op->nbits) - 1);
|
|
else
|
|
{
|
|
if ((op->flags & MIPS16_SP) != 0)
|
|
printf ("29");
|
|
else if ((op->flags & MIPS16_PC) != 0)
|
|
{
|
|
int j;
|
|
|
|
printf ("((INDELAYSLOT () ? (INJALDELAYSLOT () ? cia - 4 : cia - 2) : (have_extendval ? cia - 2 : cia)) & ~ (uword64) 1)");
|
|
for (j = 0; j < opindex; j++)
|
|
if (ops[j]->shift != 0)
|
|
printf (" & ~ (uword64) 0x%x", (1 << ops[j]->shift) - 1);
|
|
}
|
|
else if ((op->flags & MIPS16_ZERO) != 0)
|
|
printf ("0");
|
|
else if ((op->flags & MIPS16_TREG) != 0)
|
|
printf ("24");
|
|
else if ((op->flags & MIPS16_RA) != 0)
|
|
printf ("31");
|
|
else
|
|
abort ();
|
|
}
|
|
printf (";\n");
|
|
|
|
if ((op->flags & MIPS16_DESTREG) != 0)
|
|
printf (" int destreg;\n");
|
|
|
|
if (opindex > 2)
|
|
abort ();
|
|
ops[opindex] = op;
|
|
++opindex;
|
|
}
|
|
|
|
if (op != NULL)
|
|
{
|
|
/* Make sure we saw the right number of bits for that
|
|
operand. */
|
|
if (op->nbits != 0 && 16 - op->nbits != start)
|
|
abort ();
|
|
}
|
|
|
|
for (i = 0; i < opindex; i++)
|
|
{
|
|
op = ops[i];
|
|
if ((op->flags & MIPS16_REG16) != 0)
|
|
{
|
|
printf (" if (%s < 2)\n", op->name);
|
|
printf (" %s += 16;\n", op->name);
|
|
}
|
|
if ((op->flags & MIPS16_REG32_SWAPPED) != 0)
|
|
printf (" %s = (%s >> 2) | ((%s & 3) << 3);\n",
|
|
op->name, op->name, op->name);
|
|
if ((op->flags & MIPS16_DESTREG) != 0)
|
|
printf (" destreg = %s;\n", op->name);
|
|
if ((op->flags & MIPS16_REGVAL) != 0)
|
|
printf (" %s = GPR[%s];\n", op->name, op->name);
|
|
|
|
if (op->extbits != 0)
|
|
{
|
|
printf (" if (have_extendval)\n");
|
|
printf (" {\n");
|
|
if (op->extbits == 16)
|
|
printf (" %s |= ((extendval & 0x1f) << 11) | (extendval & 0x7e0);\n",
|
|
op->name);
|
|
else if (op->extbits == 15)
|
|
printf (" %s |= ((extendval & 0xf) << 11) | (extendval & 0x7f0);\n",
|
|
op->name);
|
|
else if (op->extbits == 6)
|
|
printf (" %s = ((extendval >> 6) & 0x1f) | (extendval & 0x20);\n",
|
|
op->name);
|
|
else
|
|
printf (" %s = (extendval >> 6) & 0x1f;\n",
|
|
op->name);
|
|
if ((op->flags & MIPS16_EXTU) == 0)
|
|
{
|
|
printf (" if (%s >= 0x%x)\n",
|
|
op->name, 1 << (op->extbits - 1));
|
|
printf (" %s -= 0x%x;\n",
|
|
op->name, 1 << op->extbits);
|
|
}
|
|
printf (" have_extendval = 0;\n");
|
|
printf (" }\n");
|
|
printf (" else\n");
|
|
printf (" {\n");
|
|
if ((op->flags & MIPS16_UNSP) == 0)
|
|
{
|
|
printf (" if (%s >= 0x%x)\n",
|
|
op->name, 1 << (op->nbits - 1));
|
|
printf (" %s -= 0x%x;\n",
|
|
op->name, 1 << op->nbits);
|
|
}
|
|
if (op->shift != 0)
|
|
printf (" %s <<= %d;\n", op->name, op->shift);
|
|
if (op->type == '<' || op->type == '>'
|
|
|| op->type == '[' || op->type == ']')
|
|
{
|
|
printf (" if (%s == 0)\n", op->name);
|
|
printf (" %s = 8;\n", op->name);
|
|
}
|
|
printf (" }\n");
|
|
}
|
|
|
|
if ((op->flags & MIPS16_BRANCH) != 0)
|
|
printf (" %s *= 2;\n", op->name);
|
|
|
|
if ((op->flags & MIPS16_JUMP_ADDR) != 0)
|
|
{
|
|
printf (" {\n");
|
|
printf (" address_word paddr;\n");
|
|
printf (" int uncached;\n");
|
|
printf (" if (AddressTranslation (PC &~ (uword64) 1, isINSTRUCTION, isLOAD, &paddr, &uncached, isTARGET, isREAL))\n");
|
|
printf (" {\n");
|
|
printf (" uword64 memval;\n");
|
|
printf (" unsigned int reverse = (ReverseEndian ? 3 : 0);\n");
|
|
printf (" unsigned int bigend = (BigEndianCPU ? 3 : 0);\n");
|
|
printf (" unsigned int byte;\n");
|
|
printf (" paddr = ((paddr & ~0x7) | ((paddr & 0x7) ^ (reverse << 1)));\n");
|
|
printf (" LoadMemory (&memval,0,uncached, AccessLength_HALFWORD, paddr, PC, isINSTRUCTION, isREAL);\n");
|
|
printf (" byte = (((PC &~ (uword64) 1) & 0x7) ^ (bigend << 1));\n");
|
|
printf (" memval = (memval >> (8 * byte)) & 0xffff;\n");
|
|
printf (" %s = (((%s & 0x1f) << 23)\n", op->name, op->name);
|
|
printf (" | ((%s & 0x3e0) << 13)\n", op->name);
|
|
printf (" | (memval << 2));\n");
|
|
printf (" if ((instruction & 0x400) == 0)\n");
|
|
printf (" %s |= 1;\n", op->name);
|
|
printf (" PC += 2;\n");
|
|
printf (" }\n");
|
|
printf (" }\n");
|
|
printf (" %s |= PC & ~ (uword64) 0x0fffffff;\n", op->name);
|
|
}
|
|
}
|
|
|
|
/* FIXME: Is this the way to detect an unused extend opcode? */
|
|
printf (" if (have_extendval)\n");
|
|
printf (" SignalException (ReservedInstruction, instruction);\n");
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
typedef enum {
|
|
s_left,
|
|
s_right
|
|
} e_endshift;
|
|
|
|
static void
|
|
build_endian_shift(proc64,datalen,endbit,direction,shift)
|
|
int proc64;
|
|
int datalen;
|
|
int endbit;
|
|
e_endshift direction;
|
|
int shift;
|
|
{
|
|
if (datalen == 4) {
|
|
printf(" if ((vaddr & (1 << %d)) ^ (BigEndianCPU << %d)) {\n",endbit,endbit);
|
|
printf(" memval %s= %d;\n",direction == s_left ? "<<" : ">>",shift);
|
|
printf(" }\n");
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/* doisa = number of MIPS ISA simulator table is being constructed for.
|
|
* proc64 = TRUE if constructing 64bit processor world.
|
|
* dofp = boolean, TRUE if FP instructions are to be included.
|
|
* fpsingle = boolean, TRUE if only single precision FP instructions to be included.
|
|
*/
|
|
|
|
void
|
|
process_instructions(doarch,features)
|
|
unsigned int doarch;
|
|
unsigned int features;
|
|
{
|
|
int doisa = (doarch & MASK_ISA);
|
|
int limit = (sizeof(MIPS_DECODE) / sizeof(instruction));
|
|
int gprlen=((features & FEATURE_GP64) ? 64 : 32);
|
|
int proc64 = ((features & FEATURE_PROC32) ? 0 : -1);
|
|
int dofp = (features & FEATURE_HASFPU);
|
|
int fpsingle = (features & FEATURE_FPSINGLE);
|
|
int maxisa;
|
|
int loop;
|
|
|
|
if (limit < 1) {
|
|
fprintf(stderr,"process_instructions: invalid structure length\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (proc64 && (gprlen != 64)) {
|
|
fprintf(stderr,"Error: 64bit processor build specified, with MIPS ISA I or II\n");
|
|
exit(3);
|
|
}
|
|
|
|
/* NOTE: "proc64" also differentiates between 32- and 64-bit wide memory */
|
|
|
|
maxisa = 0;
|
|
for (loop = 0; (loop < limit); loop++)
|
|
if ((MIPS_DECODE[loop].isa & MASK_ISA) > maxisa)
|
|
maxisa = (MIPS_DECODE[loop].isa & MASK_ISA);
|
|
|
|
if (doisa == 0)
|
|
doisa = maxisa;
|
|
|
|
if (!(features & FEATURE_IGEN))
|
|
{
|
|
printf("#if defined(SIM_MANIFESTS)\n");
|
|
printf("#define MIPSISA (%d)\n",doisa);
|
|
if (proc64)
|
|
printf("#define PROCESSOR_64BIT (1 == 1)\n");
|
|
else
|
|
printf("#define PROCESSOR_64BIT (1 == 0)\n");
|
|
#if 1 /* cheat: We only have a 64bit LoadMemory and StoreMemory routines at the moment */
|
|
printf("#define LOADDRMASK (0x%08X)\n",0x7);
|
|
#else
|
|
printf("#define LOADDRMASK (0x%08X)\n",(proc64 ? 0x7 : 0x3));
|
|
#endif
|
|
/* The FP registers are the same width as the CPU registers: */
|
|
printf("#define GPRLEN (%d)\n",gprlen);
|
|
printf("typedef %s t_reg;\n",((gprlen == 64) ? "word64" : "int"));
|
|
printf("typedef %s ut_reg;\n",((gprlen == 64) ? "uword64" : "unsigned int"));
|
|
printf("typedef %s t_fpreg;\n",((gprlen == 64) ? "word64" : "int"));
|
|
if (dofp)
|
|
printf("#define HASFPU (1 == 1)\n");
|
|
if (features & FEATURE_FAST)
|
|
printf("#define FASTSIM (1 == 1)\n");
|
|
if (features & FEATURE_WARN_STALL)
|
|
printf("#define WARN_STALL (1 == 1)\n");
|
|
if (features & FEATURE_WARN_LOHI)
|
|
printf("#define WARN_LOHI (1 == 1)\n");
|
|
if (features & FEATURE_WARN_ZERO)
|
|
printf("#define WARN_ZERO (1 == 1)\n");
|
|
if (features & FEATURE_WARN_MEM)
|
|
printf("#define WARN_MEM (1 == 1)\n");
|
|
if (features & FEATURE_WARN_R31)
|
|
printf("#define WARN_R31 (1 == 1)\n");
|
|
if (features & FEATURE_WARN_RESULT)
|
|
printf("#define WARN_RESULT (1 == 1)\n");
|
|
|
|
printf("#else /* simulator engine */\n");
|
|
|
|
printf("/* Engine generated by \"%s\" at %s */\n","<SHOW PROGRAM ARGS>","<SHOW CURRENT DATE AND TIME>");
|
|
printf("/* Main instruction decode for %d-bit MIPS ISA %d (Table entry limit = %d) */\n",(proc64 ? 64 : 32),doisa,limit);
|
|
if (dofp)
|
|
printf("/* %sFP instructions included */\n",(fpsingle ? "Single precision " : ""));
|
|
printf("/* NOTE: \"DSPC\" is the delay slot PC address */\n");
|
|
|
|
if (proc64) {
|
|
printf("#if !defined(PROCESSOR_64BIT)\n");
|
|
printf("#error \"Automatically constructed decoder has been built for a 64bit processor\"\n");
|
|
printf("#endif\n");
|
|
}
|
|
|
|
printf("/* Actual instruction decoding block */\n");
|
|
printf("if ((vaddr & 1) == 0){\n");
|
|
{
|
|
int limit;
|
|
printf("int num = ((instruction >> %d) & 0x%08X);\n",OP_SH_OP,OP_MASK_OP);
|
|
limit = (OP_MASK_OP + 1);
|
|
|
|
printf("#ifdef DEBUG\n");
|
|
printf("printf(\"DBG: instruction = 0x%%08X\\n\",instruction);\n");
|
|
printf("#endif\n");
|
|
|
|
printf("if (num == 0x00) num = (%d + ((instruction >> %d) & 0x%08X));\n",limit,OP_SH_SPEC,OP_MASK_SPEC);
|
|
limit += (OP_MASK_SPEC + 1);
|
|
|
|
printf("else if (num == 0x01) num = (%d + ((instruction >> %d) & 0x%08X));\n",limit,OP_SH_RT,OP_MASK_RT);
|
|
limit += (OP_MASK_RT + 1);
|
|
|
|
printf("else if (num == 0x11) {\n");
|
|
printf(" if ((instruction & (0x%08X << %d)) == 0x%08X)\n",OP_MASK_COP1NORM,OP_SH_COP1NORM,(OP_MASK_COP1NORM << OP_SH_COP1NORM));
|
|
printf(" if ((instruction & (0x%08X << %d)) == 0x%08X)\n",OP_MASK_COP1CMP,OP_SH_COP1CMP,(OP_MASK_COP1CMP << OP_SH_COP1CMP));
|
|
printf(" num = (%d + ((instruction >> %d) & 0x%08X));\n",limit,OP_SH_SPEC,(OP_MASK_SPEC & (OP_MASK_COP1CMP << OP_SH_COP1CMP)));
|
|
printf(" else\n");
|
|
printf(" num = (%d + ((instruction >> %d) & 0x%08X));\n",limit,OP_SH_SPEC,OP_MASK_SPEC);
|
|
limit += (OP_MASK_SPEC + 1);
|
|
|
|
printf(" else\n");
|
|
/* To keep this code quick, we just clear out the "to" bit
|
|
here. The proper (though slower) code would be to have another
|
|
conditional, checking whether this instruction is a branch or
|
|
not, before limiting the range to the bottom two bits of the
|
|
move operation. */
|
|
printf(" num = (%d + (((instruction >> %d) & 0x%08X) & ~0x%08X));\n",limit,OP_SH_COP1SPEC,OP_MASK_COP1SPEC,OP_MASK_COP1SCLR);
|
|
limit += (OP_MASK_COP1SPEC + 1);
|
|
|
|
printf("} else if (num == 0x13) num = (%d + ((instruction >> %d) & 0x%08X));\n",limit,OP_SH_SPEC,OP_MASK_SPEC);
|
|
limit += (OP_MASK_SPEC + 1);
|
|
|
|
printf("else if (num == 0x1C) {\n");
|
|
printf(" int mmi_func = ((instruction >> %d) & 0x%08X);\n",OP_SH_MMI,OP_MASK_MMI);
|
|
|
|
printf(" if (mmi_func == 0x08) \n");
|
|
printf(" num = (%d + ((instruction >> %d) & 0x%08X));\n",limit,OP_SH_MMISUB,OP_MASK_MMISUB);
|
|
limit += (OP_MASK_MMISUB + 1);
|
|
|
|
printf(" else if (mmi_func == 0x28) \n");
|
|
printf(" num = (%d + ((instruction >> %d) & 0x%08X));\n",limit,OP_SH_MMISUB,OP_MASK_MMISUB);
|
|
limit += (OP_MASK_MMISUB + 1);
|
|
|
|
printf(" else if (mmi_func == 0x09) \n");
|
|
printf(" num = (%d + ((instruction >> %d) & 0x%08X));\n",limit,OP_SH_MMISUB,OP_MASK_MMISUB);
|
|
limit += (OP_MASK_MMISUB + 1);
|
|
|
|
printf(" else if (mmi_func == 0x29) \n");
|
|
printf(" num = (%d + ((instruction >> %d) & 0x%08X));\n",limit,OP_SH_MMISUB,OP_MASK_MMISUB);
|
|
limit += (OP_MASK_MMISUB + 1);
|
|
|
|
printf(" else \n");
|
|
printf(" num = (%d + mmi_func);\n",limit);
|
|
limit += (OP_MASK_MMI + 1);
|
|
|
|
printf("}\n");
|
|
|
|
printf("/* Total possible switch entries: %d */\n",limit) ;
|
|
}
|
|
|
|
printf("#ifdef DEBUG\n");
|
|
printf("printf(\"DBG: num = %%d\\n\",num);\n");
|
|
printf("#endif\n");
|
|
|
|
printf("switch (num)\n") ;
|
|
printf("{\n");
|
|
}
|
|
|
|
for (loop = 0; (loop < limit); loop++) {
|
|
/* First check if the insn is in a requested isa# independent set,
|
|
then check that the ISA number we are constructing for is
|
|
valid, then if the instruction matches any of the
|
|
architecture specific flags. NOTE: We allow a selected ISA of
|
|
zero to be used to match all standard instructions. */
|
|
unsigned int isa = MIPS_DECODE[loop].isa;
|
|
if (((isa & doarch & MASK_ISA_INDEP)
|
|
|| (((isa & MASK_ISA) <= doisa)
|
|
&& (((isa & MASK_ISA_DEP) == 0) || ((isa & MASK_ISA_DEP) & doarch) != 0)))
|
|
&& (!(MIPS_DECODE[loop].flags & FP) || ((MIPS_DECODE[loop].flags & FP) && dofp))
|
|
|| (features & FEATURE_IGEN)) {
|
|
unsigned int onemask;
|
|
unsigned int zeromask;
|
|
unsigned int dontmask;
|
|
unsigned int mask;
|
|
unsigned int number;
|
|
|
|
convert_bitmap(MIPS_DECODE[loop].bitmap,&onemask,&zeromask,&dontmask);
|
|
|
|
if (!(MIPS_DECODE[loop].flags & COPROC)
|
|
&& ((GETDATASIZEINSN(&MIPS_DECODE[loop]) == DOUBLEWORD) && !proc64)
|
|
&& !(features & FEATURE_IGEN)) {
|
|
fprintf(stderr,"DOUBLEWORD width specified for non 64-bit processor for instruction \"%s\"\n",MIPS_DECODE[loop].name);
|
|
exit(4);
|
|
}
|
|
|
|
#if defined(DEBUG)
|
|
printf("/* DEBUG: onemask 0x%08X */\n",onemask) ;
|
|
printf("/* DEBUG: zeromask 0x%08X */\n",zeromask) ;
|
|
printf("/* DEBUG: dontmask 0x%08X */\n",dontmask) ;
|
|
#endif
|
|
|
|
switch (MIPS_DECODE[loop].mark) {
|
|
case NORMAL :
|
|
mask = (OP_MASK_OP << OP_SH_OP) ;
|
|
number = ((onemask >> OP_SH_OP) & OP_MASK_OP) ;
|
|
break ;
|
|
|
|
case SPECIAL :
|
|
mask = ((OP_MASK_OP << OP_SH_OP) | (OP_MASK_SPEC << OP_SH_SPEC)) ;
|
|
number = ((OP_MASK_OP + 1) + ((onemask >> OP_SH_SPEC) & OP_MASK_SPEC)) ;
|
|
break ;
|
|
|
|
case REGIMM :
|
|
mask = ((OP_MASK_OP << OP_SH_OP) | (OP_MASK_RT << OP_SH_RT)) ;
|
|
number = (((OP_MASK_OP + 1) + (OP_MASK_SPEC + 1)) + ((onemask >> OP_SH_RT) & OP_MASK_RT)) ;
|
|
break ;
|
|
|
|
case COP1 :
|
|
mask = ((OP_MASK_OP << OP_SH_OP) | (OP_MASK_SPEC << OP_SH_SPEC)) ;
|
|
number = (((OP_MASK_OP + 1) + (OP_MASK_SPEC + 1) + (OP_MASK_RT + 1)) + ((onemask >> OP_SH_SPEC) & OP_MASK_SPEC)) ;
|
|
break ;
|
|
|
|
case COP1S :
|
|
mask = ((OP_MASK_OP << OP_SH_OP) | (OP_MASK_COP1SPEC << OP_SH_COP1SPEC)) ;
|
|
number = (((OP_MASK_OP + 1) + (OP_MASK_SPEC + 1) + (OP_MASK_RT + 1) + (OP_MASK_SPEC + 1)) + ((onemask >> OP_SH_COP1SPEC) & OP_MASK_COP1SPEC)) ;
|
|
break;
|
|
|
|
case COP1X :
|
|
mask = ((OP_MASK_OP << OP_SH_OP) | (OP_MASK_SPEC << OP_SH_SPEC)) ;
|
|
number = (((OP_MASK_OP + 1) + (OP_MASK_SPEC + 1) + (OP_MASK_RT + 1) + (OP_MASK_COP1SPEC + 1) + (OP_MASK_SPEC + 1)) + ((onemask >> OP_SH_SPEC) & OP_MASK_SPEC)) ;
|
|
break ;
|
|
|
|
case MMI0 :
|
|
mask = ((OP_MASK_OP << OP_SH_OP) | (OP_MASK_MMI << OP_SH_MMI)
|
|
| (OP_MASK_MMISUB << OP_SH_MMISUB));
|
|
number = (((OP_MASK_OP + 1) + (OP_MASK_SPEC + 1) + (OP_MASK_RT + 1)
|
|
+ (OP_MASK_SPEC + 1) + (OP_MASK_COP1SPEC + 1) + (OP_MASK_SPEC + 1))
|
|
+ ((onemask >> OP_SH_MMISUB) & OP_MASK_MMISUB)) ;
|
|
break ;
|
|
|
|
case MMI1 :
|
|
mask = ((OP_MASK_OP << OP_SH_OP) | (OP_MASK_MMI << OP_SH_MMI)
|
|
| (OP_MASK_MMISUB << OP_SH_MMISUB));
|
|
number = (((OP_MASK_OP + 1) + (OP_MASK_SPEC + 1) + (OP_MASK_RT + 1)
|
|
+ (OP_MASK_SPEC + 1) + (OP_MASK_COP1SPEC + 1) + (OP_MASK_SPEC + 1))
|
|
+ (OP_MASK_MMISUB + 1)
|
|
+ ((onemask >> OP_SH_MMISUB) & OP_MASK_MMISUB)) ;
|
|
break ;
|
|
|
|
case MMI2 :
|
|
mask = ((OP_MASK_OP << OP_SH_OP) | (OP_MASK_MMI << OP_SH_MMI)
|
|
| (OP_MASK_MMISUB << OP_SH_MMISUB));
|
|
number = (((OP_MASK_OP + 1) + (OP_MASK_SPEC + 1) + (OP_MASK_RT + 1)
|
|
+ (OP_MASK_SPEC + 1) + (OP_MASK_COP1SPEC + 1) + (OP_MASK_SPEC + 1))
|
|
+ (OP_MASK_MMISUB + 1) + (OP_MASK_MMISUB + 1)
|
|
+ ((onemask >> OP_SH_MMISUB) & OP_MASK_MMISUB)) ;
|
|
break ;
|
|
|
|
case MMI3 :
|
|
mask = ((OP_MASK_OP << OP_SH_OP) | (OP_MASK_MMI << OP_SH_MMI)
|
|
| (OP_MASK_MMISUB << OP_SH_MMISUB));
|
|
number = (((OP_MASK_OP + 1) + (OP_MASK_SPEC + 1) + (OP_MASK_RT + 1)
|
|
+ (OP_MASK_SPEC + 1) + (OP_MASK_COP1SPEC + 1) + (OP_MASK_SPEC + 1))
|
|
+ (OP_MASK_MMISUB + 1) + (OP_MASK_MMISUB + 1) + (OP_MASK_MMISUB + 1)
|
|
+ ((onemask >> OP_SH_MMISUB) & OP_MASK_MMISUB)) ;
|
|
break ;
|
|
|
|
case MMINORM :
|
|
mask = ((OP_MASK_OP << OP_SH_OP) | (OP_MASK_MMI << OP_SH_MMI)) ;
|
|
number = (((OP_MASK_OP + 1) + (OP_MASK_SPEC + 1) + (OP_MASK_RT + 1)
|
|
+ (OP_MASK_SPEC + 1) + (OP_MASK_COP1SPEC + 1) + (OP_MASK_SPEC + 1))
|
|
+ (OP_MASK_MMISUB + 1) + (OP_MASK_MMISUB + 1) + (OP_MASK_MMISUB + 1)
|
|
+ (OP_MASK_MMISUB + 1)
|
|
+ ((onemask >> OP_SH_MMI) & OP_MASK_MMI)) ;
|
|
break ;
|
|
|
|
default :
|
|
fprintf(stderr,"Unrecognised opcode mark %d in table slot %d \"%s\"\n",MIPS_DECODE[loop].mark,loop,MIPS_DECODE[loop].name) ;
|
|
exit(5) ;
|
|
}
|
|
|
|
if (!(features & FEATURE_IGEN))
|
|
{
|
|
printf("case %d : /* \"%s\" %s */\n",number,MIPS_DECODE[loop].name,MIPS_DECODE[loop].bitmap) ;
|
|
|
|
#if defined(DEBUG)
|
|
printf("/* DEBUG: mask 0x%08X */\n",mask) ;
|
|
printf(" printf(\"\\\"%s\\\"\\n\");\n",MIPS_DECODE[loop].name);
|
|
#endif
|
|
|
|
/* Check if there are any other explicit bits in the instruction: */
|
|
if ((~mask & (onemask | zeromask)) != 0x00000000) {
|
|
printf(" if ((instruction & 0x%08X) != 0x%08X)\n",(onemask | zeromask),onemask) ;
|
|
printf(" {\n") ;
|
|
printf(" SignalException(ReservedInstruction,instruction);\n") ;
|
|
printf(" }\n") ;
|
|
printf(" else\n") ;
|
|
}
|
|
|
|
printf(" {\n") ;
|
|
}
|
|
else
|
|
{
|
|
/* start-sanitize-cygnus-never */
|
|
/* If any sanitization occures, this line should be printed */
|
|
if ((MIPS_DECODE[loop].isa & ARCH_R5900))
|
|
printf ("// %s-%s-%s\n", "start", "sanitize", "r5900");
|
|
/* end-sanitize-cygnus-never */
|
|
printf ("\n");
|
|
print_igen_insn_format (MIPS_DECODE[loop].bitmap,
|
|
MIPS_DECODE[loop].mark, /* format-name */
|
|
GETDATASIZEINSN (&MIPS_DECODE[loop]), /* filter-flags */
|
|
"", /* options */
|
|
MIPS_DECODE[loop].name);
|
|
print_igen_insn_models (MIPS_DECODE[loop].isa);
|
|
printf ("{\n") ;
|
|
printf (" unsigned32 instruction = instruction_0;\n");
|
|
}
|
|
|
|
/* Get hold of the operands */
|
|
/* NOTE: If we wanted to make the simulator code smaller, we
|
|
* could pull these into a common sequence before we perform
|
|
* the instruction decoding. However, this would affect the
|
|
* performance since unnecessary field extraction would be
|
|
* occurring for certain instructions.
|
|
*
|
|
* Also we do not perform checking for multiple definitions of a
|
|
* particular operand here, since they are caught by the
|
|
* compilation of the produced code.
|
|
*/
|
|
build_operands(doisa, features, &MIPS_DECODE[loop]);
|
|
|
|
printf(" {\n") ;
|
|
|
|
build_instruction (doisa, features, 0, &MIPS_DECODE[loop]);
|
|
|
|
printf(" }\n") ;
|
|
if (!(features & FEATURE_IGEN))
|
|
{
|
|
printf(" }\n") ;
|
|
printf(" break ;\n") ;
|
|
}
|
|
else
|
|
{
|
|
printf ("}\n");
|
|
printf ("\n");
|
|
/* start-sanitize-cygnus-never */
|
|
/* When sanitized, this output should never be produced */
|
|
if ((MIPS_DECODE[loop].isa & ARCH_R5900))
|
|
printf ("// %s-%s-%s\n", "end", "sanitize", "r5900");
|
|
/* end-sanitize-cygnus-never */
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
|
|
if (!(features & FEATURE_IGEN))
|
|
{
|
|
printf("default : /* Unrecognised instruction */\n") ;
|
|
printf(" SignalException(ReservedInstruction,instruction);\n") ;
|
|
printf(" break ;\n") ;
|
|
printf("}\n}\n") ;
|
|
}
|
|
|
|
/* Handle mips16 instructions. The switch table looks like this:
|
|
0 - 31: I, RI, and RRI instructions by major.
|
|
32 - 35: ISHIFT instructions by function + 32
|
|
36 - 37: RRI_A instructions by function + 36
|
|
38 - 45: I8, I8_MOV32R, and I8_MOVR32 instructions by function + 38
|
|
46 - 49: RRR instructions by function + 46
|
|
50 - 81: RR instructions by minor + 50 (except for minor == 0)
|
|
82 - 89: I64 and RI64 instructions by funct + 82
|
|
90 - 97: jalr (RR minor 0) by y + 90
|
|
*/
|
|
if (!(features & FEATURE_IGEN))
|
|
{
|
|
printf ("else {\n");
|
|
printf ("static int extendval;\n");
|
|
printf ("static int have_extendval;\n");
|
|
printf ("int num = ((instruction >> %d) & 0x%08X);\n",
|
|
MIPS16OP_SH_OP, MIPS16OP_MASK_OP);
|
|
printf ("switch (num)\n{\n");
|
|
printf ("case 0x6: num = 32 + (instruction & 3); break;\n");
|
|
printf ("case 0x8: num = 36 + ((instruction & 0x10) >> 4); break;\n");
|
|
printf ("case 0xc: num = 38 + ((instruction & 0x700) >> 8); break;\n");
|
|
printf ("case 0x1c: num = 46 + (instruction & 3); break;\n");
|
|
printf ("case 0x1d: num = 50 + (instruction & 0x1f);\n");
|
|
printf (" if (num == 50) num = 90 + ((instruction & 0xe0) >> 5);\n");
|
|
printf (" break;\n");
|
|
printf ("case 0x1f: num = 82 + ((instruction & 0x700) >> 8); break;\n");
|
|
printf ("default: break;\n}\n");
|
|
printf ("switch (num)\n{\n");
|
|
}
|
|
|
|
for (loop = 0; loop < sizeof MIPS16_DECODE / sizeof MIPS16_DECODE[0]; loop++)
|
|
{
|
|
const char *bitmap;
|
|
int num;
|
|
|
|
if (! proc64 && GETDATASIZEINSN (&MIPS16_DECODE[loop]) == DOUBLEWORD)
|
|
continue;
|
|
|
|
bitmap = MIPS16_DECODE[loop].bitmap;
|
|
switch (MIPS16_DECODE[loop].mark)
|
|
{
|
|
case I:
|
|
case RI:
|
|
case RRI:
|
|
num = bitmap_val (bitmap, 11, 5);
|
|
break;
|
|
case ISHIFT:
|
|
num = 32 + bitmap_val (bitmap, 0, 2);
|
|
break;
|
|
case RRI_A:
|
|
num = 36 + bitmap_val (bitmap, 4, 1);
|
|
break;
|
|
case I8:
|
|
case I8_MOV32R:
|
|
case I8_MOVR32:
|
|
num = 38 + bitmap_val (bitmap, 8, 3);
|
|
break;
|
|
case RRR:
|
|
num = 46 + bitmap_val (bitmap, 0, 2);
|
|
break;
|
|
case RR:
|
|
{
|
|
int minor;
|
|
|
|
minor = bitmap_val (bitmap, 0, 5);
|
|
if (minor != 0)
|
|
num = 50 + minor;
|
|
else
|
|
num = 90 + bitmap_val (bitmap, 5, 3);
|
|
}
|
|
break;
|
|
case I64:
|
|
case RI64:
|
|
num = 82 + bitmap_val (bitmap, 8, 3);
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
|
|
|
|
if (!(features & FEATURE_IGEN))
|
|
{
|
|
printf ("case %d: /* \"%s\" %s */\n", num, MIPS16_DECODE[loop].name,
|
|
bitmap);
|
|
printf (" {\n");
|
|
}
|
|
else
|
|
{
|
|
printf ("\n");
|
|
print_igen_insn_format (bitmap,
|
|
MIPS16_DECODE[loop].mark, /* format-name */
|
|
-1, /* filter-flags -- -1 => MIPS16 */
|
|
"", /* options */
|
|
MIPS16_DECODE[loop].name);
|
|
printf ("*mips16:\n");
|
|
printf ("{\n");
|
|
printf (" unsigned32 instruction = instruction_0;\n");
|
|
}
|
|
|
|
build_mips16_operands (bitmap);
|
|
|
|
printf (" {\n") ;
|
|
|
|
/* build_instruction doesn't know about extend. */
|
|
if (num != 30)
|
|
build_instruction (doisa, features, 1, &MIPS16_DECODE[loop]);
|
|
else
|
|
{
|
|
printf (" extendval = ext;\n");
|
|
printf (" have_extendval = 1;\n");
|
|
}
|
|
|
|
printf (" }\n");
|
|
if (!(features & FEATURE_IGEN))
|
|
{
|
|
printf (" }\n") ;
|
|
printf (" break ;\n") ;
|
|
}
|
|
else
|
|
{
|
|
printf ("}\n");
|
|
printf ("\n");
|
|
}
|
|
}
|
|
|
|
if (!(features & FEATURE_IGEN))
|
|
{
|
|
printf ("default : /* Unrecognised instruction */\n") ;
|
|
printf (" SignalException(ReservedInstruction,instruction);\n") ;
|
|
printf (" break ;\n") ;
|
|
printf ("}\n}\n") ;
|
|
|
|
printf("#endif /* simulator engine */\n");
|
|
}
|
|
|
|
return ;
|
|
}
|
|
|
|
/* Output the code to execute an instruction, assuming the operands
|
|
have already been extracted. */
|
|
|
|
static void
|
|
build_instruction (doisa, features, mips16, insn)
|
|
int doisa;
|
|
unsigned int features;
|
|
int mips16;
|
|
const struct instruction *insn;
|
|
{
|
|
int gprlen=((features & FEATURE_GP64) ? 64 : 32);
|
|
int proc64 = ((features & FEATURE_PROC32) ? 0 : -1);
|
|
char *regtype = ((gprlen == 64) ? "uword64" : "unsigned int");
|
|
|
|
switch (insn->type) {
|
|
/* TODO: To make these easier to edit and maintain, they should
|
|
actually be provided as source macros (or inline functions)
|
|
OUTSIDE this main switch statement. The PPC simulator has a
|
|
neater scheme for describing the instruction sequences. */
|
|
|
|
case ADD:
|
|
case SUB:
|
|
{
|
|
char *signed_basetype = "unknown";
|
|
char *unsigned_basetype = "unknown";
|
|
|
|
switch (GETDATASIZEINSN(insn)) {
|
|
case WORD :
|
|
signed_basetype = "signed int";
|
|
unsigned_basetype = "unsigned int";
|
|
break;
|
|
case DOUBLEWORD :
|
|
signed_basetype = "word64";
|
|
unsigned_basetype = "uword64";
|
|
break;
|
|
default :
|
|
fprintf(stderr,"Opcode table error: size of ADD/SUB operands not known (%d)\n",GETDATASIZEINSN(insn));
|
|
exit(1);
|
|
}
|
|
|
|
if ((insn->type) == ADD) {
|
|
printf(" %s temp = (%s)(op1 + op2);\n", unsigned_basetype, unsigned_basetype);
|
|
printf(" %s tempS UNUSED = (%s)temp;\n", signed_basetype, signed_basetype);
|
|
if (insn->flags & OVERFLOW) {
|
|
printf(" if (((op1 < 0) == (op2 < 0)) && ((tempS < 0) != (op1 < 0)))\n");
|
|
printf(" SignalExceptionIntegerOverflow ();\n");
|
|
printf(" else\n");
|
|
}
|
|
if (!proc64 || (insn->flags & UNSIGNED) || (GETDATASIZEINSN(insn) == DOUBLEWORD))
|
|
printf(" GPR[destreg] = (%s)temp;\n",regtype);
|
|
else /* only sign-extend when placing 32bit result in 64bit processor */
|
|
printf(" GPR[destreg] = SIGNEXTEND(((%s)temp),32);\n",regtype);
|
|
} else { /* SUB */
|
|
printf(" %s temp = (%s)(op1 - op2);\n", unsigned_basetype, unsigned_basetype);
|
|
printf(" %s tempS UNUSED = (%s)temp;\n", signed_basetype, signed_basetype);
|
|
if (insn->flags & OVERFLOW) { /* different signs => overflow if result_sign != arg_sign */
|
|
printf(" if (((op1 < 0) != (op2 < 0)) && ((tempS < 0) == (op1 < 0)))\n");
|
|
printf(" SignalExceptionIntegerOverflow ();\n");
|
|
printf(" else\n");
|
|
}
|
|
/* UNSIGNED 32bit operations on a 64bit processor should
|
|
*STILL* be sign-extended. We have cheated in the
|
|
data-structure, by not marking it with UNSIGNED, and not
|
|
setting OVERFLOW. */
|
|
if (!proc64 || (insn->flags & UNSIGNED) || (GETDATASIZEINSN(insn) == DOUBLEWORD))
|
|
printf(" GPR[destreg] = (%s)temp;\n",regtype);
|
|
else /* only sign-extend when placing 32bit result in 64bit processor */
|
|
printf(" GPR[destreg] = SIGNEXTEND(((%s)temp),32);\n",regtype);
|
|
}
|
|
}
|
|
break ;
|
|
|
|
case MUL:
|
|
{
|
|
char* pipe = (insn->flags & PIPE1) ? "1" : "";
|
|
|
|
printf(" {\n");
|
|
if (GETDATASIZEINSN(insn) == DOUBLEWORD) {
|
|
printf(" uword64 mid;\n");
|
|
printf(" uword64 midhi;\n");
|
|
printf(" uword64 temp;\n");
|
|
if ((insn->flags & UNSIGNED) == 0)
|
|
{
|
|
printf(" int sign = 0;\n");
|
|
printf(" if (op1 < 0) { op1 = - op1; ++sign; }\n");
|
|
printf(" if (op2 < 0) { op2 = - op2; ++sign; }\n");
|
|
}
|
|
printf(" LO%s = ((uword64)WORD64LO(op1) * WORD64LO(op2));\n",pipe);
|
|
printf(" HI%s = ((uword64)WORD64HI(op1) * WORD64HI(op2));\n",pipe);
|
|
printf(" mid = ((uword64)WORD64HI(op1) * WORD64LO(op2));\n");
|
|
printf(" midhi = SET64HI(WORD64LO(mid));\n");
|
|
printf(" temp = (LO%s + midhi);\n",pipe);
|
|
printf(" if ((temp == midhi) ? (LO%s != 0) : (temp < midhi))\n",pipe);
|
|
printf(" HI%s += 1;\n",pipe);
|
|
printf(" HI%s += WORD64HI(mid);\n",pipe);
|
|
printf(" mid = ((uword64)WORD64LO(op1) * WORD64HI(op2));\n");
|
|
printf(" midhi = SET64HI(WORD64LO(mid));\n");
|
|
printf(" LO%s = (temp + midhi);\n",pipe);
|
|
printf(" if ((LO%s == midhi) ? (temp != 0) : (LO%s < midhi))\n",pipe,pipe);
|
|
printf(" HI%s += 1;\n",pipe);
|
|
printf(" HI%s += WORD64HI(mid);\n",pipe);
|
|
if ((insn->flags & UNSIGNED) == 0)
|
|
printf(" if (sign & 1) { LO%s = - LO%s; HI%s = (LO%s == 0 ? 0 : -1) - HI%s; }\n",pipe,pipe,pipe,pipe,pipe);
|
|
} else {
|
|
if (insn->flags & UNSIGNED)
|
|
printf(" uword64 temp = ((uword64)(op1 & 0xffffffff) * (uword64)(op2 & 0xffffffff));\n");
|
|
else
|
|
printf(" uword64 temp = ((word64) op1 * (word64) op2);\n");
|
|
printf(" LO%s = SIGNEXTEND((%s)WORD64LO(temp),32);\n",pipe,regtype);
|
|
printf(" HI%s = SIGNEXTEND((%s)WORD64HI(temp),32);\n",pipe,regtype);
|
|
}
|
|
if (insn->flags & OP3)
|
|
{
|
|
printf(" if ( destreg != 0 )\n");
|
|
printf(" GPR[destreg] = LO%s;\n",pipe);
|
|
}
|
|
printf(" }\n");
|
|
break ;
|
|
}
|
|
case DIV:
|
|
{
|
|
int boolU = (insn->flags & UNSIGNED);
|
|
char* pipe = (insn->flags & PIPE1) ? "1" : "";
|
|
|
|
printf(" {\n");
|
|
|
|
if (GETDATASIZEINSN(insn) == DOUBLEWORD) {
|
|
printf(" %sword64 d1 = op1;\n", (boolU ? "u" : ""));
|
|
printf(" %sword64 d2 = op2;\n", (boolU ? "u" : ""));
|
|
printf(" if (d2 == 0)\n");
|
|
printf(" {\n");
|
|
printf(" LO%s = SIGNED64 (0x8000000000000000);\n", pipe);
|
|
printf(" HI%s = 0;\n", pipe);
|
|
printf(" }\n");
|
|
printf(" else if (d2 == -1 && d1 == SIGNED64 (0x8000000000000000))\n");
|
|
printf(" {\n");
|
|
printf(" LO%s = SIGNED64 (0x8000000000000000);\n", pipe);
|
|
printf(" HI%s = 0;\n", pipe);
|
|
printf(" }\n");
|
|
printf(" else\n");
|
|
printf(" {\n");
|
|
printf(" LO%s = (d1 / d2);\n", pipe);
|
|
printf(" HI%s = (d1 %% d2);\n", pipe);
|
|
printf(" }\n");
|
|
} else {
|
|
printf(" %sint d1 = op1;\n", (boolU ? "unsigned " : ""));
|
|
printf(" %sint d2 = op2;\n", (boolU ? "unsigned " : ""));
|
|
printf(" if (d2 == 0)\n");
|
|
printf(" {\n");
|
|
printf(" LO%s = SIGNEXTEND(0x80000000,32);\n",pipe);
|
|
printf(" HI%s = SIGNEXTEND(0,32);\n", pipe);
|
|
printf(" }\n");
|
|
printf(" else if (d2 == -1 && d1 == 0x80000000)\n");
|
|
printf(" {\n");
|
|
printf(" LO%s = SIGNEXTEND(0x80000000,32);\n",pipe);
|
|
printf(" HI%s = SIGNEXTEND(0,32);\n", pipe);
|
|
printf(" }\n");
|
|
printf(" else\n");
|
|
printf(" {\n");
|
|
printf(" LO%s = SIGNEXTEND((d1 / d2),32);\n", pipe);
|
|
printf(" HI%s = SIGNEXTEND((d1 %% d2),32);\n", pipe);
|
|
printf(" }\n");
|
|
}
|
|
printf(" }\n");
|
|
}
|
|
break ;
|
|
|
|
case SHIFT:
|
|
{
|
|
int datalen = GETDATASIZEINSN(insn);
|
|
int bits = ((datalen == WORD) ? 32 : 64);
|
|
char *ltype = ((datalen == WORD) ? "unsigned int" : "uword64");
|
|
|
|
/* Check that the specified SHIFT is valid: */
|
|
if ((datalen == BYTE) || (datalen == HALFWORD)) {
|
|
fprintf(stderr,"Shift \"%s\" specified with BYTE or HALFWORD\n",insn->name);
|
|
exit(9);
|
|
}
|
|
if ((insn->flags & LEFT) && (insn->flags & RIGHT)) {
|
|
fprintf(stderr,"Shift \"%s\" specified with both LEFT and RIGHT\n",insn->name);
|
|
exit(9);
|
|
}
|
|
if (!(insn->flags & LEFT) && !(insn->flags & RIGHT)) {
|
|
fprintf(stderr,"Shift \"%s\" specified with neither LEFT or RIGHT\n",insn->name);
|
|
exit(9);
|
|
}
|
|
if ((insn->flags & LOGICAL) && (insn->flags & ARITHMETIC)) {
|
|
fprintf(stderr,"Shift \"%s\" specified with both LOGICAL and ARITHMETIC\n",insn->name);
|
|
exit(9);
|
|
}
|
|
if (!(insn->flags & LOGICAL) && !(insn->flags & ARITHMETIC)) {
|
|
fprintf(stderr,"Shift \"%s\" specified with neither LOGICAL or ARITHMETIC\n",insn->name);
|
|
exit(9);
|
|
}
|
|
if ((insn->flags & LEFT) && (insn->flags & ARITHMETIC)) {
|
|
fprintf(stderr,"Arithmetic LEFT shift \"%s\" specified\n",insn->name);
|
|
exit(9);
|
|
}
|
|
|
|
/* Work around an MSC code generation bug by precomputing a value
|
|
* with the sign bit set. */
|
|
if (insn->flags & ARITHMETIC)
|
|
printf(" %s highbit = (%s)1 << %d;\n", ltype, ltype, bits - 1);
|
|
|
|
/* If register specified shift, then extract the relevant shift amount: */
|
|
if (insn->flags & REG)
|
|
printf(" op1 &= 0x%02X;\n",(bits - 1));
|
|
|
|
/* If HI32 specified, then shift range is 32..63 */
|
|
if (insn->flags & HI32)
|
|
printf(" op1 |= (1 << 5);\n");
|
|
|
|
/* We do not need to perform pre-masking with 0xFFFFFFFF when
|
|
dealing with 32bit shift lefts, since the sign-extension
|
|
code will replace any remaining hi-bits: */
|
|
if (insn->flags & LEFT)
|
|
printf(" GPR[destreg] = ((uword64)op2 << op1);\n");
|
|
else
|
|
printf(" GPR[destreg] = ((uword64)(op2%s) >> op1);\n",((bits == 32) ? " & 0xFFFFFFFF" : ""));
|
|
|
|
/* For ARITHMETIC shifts, we must duplicate the sign-bit. We
|
|
don't do this if op1 is zero, since it is not needed and
|
|
since that would cause an undefined shift of the number of
|
|
bits in the type. */
|
|
if (insn->flags & ARITHMETIC)
|
|
printf(" GPR[destreg] |= (op1 != 0 && (op2 & highbit) ? ((((%s)1 << op1) - 1) << (%d - op1)) : 0);\n",ltype,bits);
|
|
|
|
/* Ensure WORD values are sign-extended into 64bit registers */
|
|
if ((bits == 32) && (gprlen == 64))
|
|
printf(" GPR[destreg] = SIGNEXTEND(GPR[destreg],%d);\n",bits);
|
|
}
|
|
break ;
|
|
|
|
case MOVE:
|
|
if (insn->flags & (HI | LO)) {
|
|
char *regname = ((insn->flags & LO) ? "LO" : "HI");
|
|
int pipe1 = (insn->flags & PIPE1);
|
|
if (insn->flags & LEFT)
|
|
printf(" GPR[destreg] = %s%s;\n",regname,(pipe1 ? "1" : ""));
|
|
else {
|
|
printf(" %s%s = op1;\n",regname,(pipe1 ? "1" : ""));
|
|
}
|
|
} else
|
|
if (insn->flags & SHIFT16)
|
|
printf(" GPR[destreg] = (op2 << 16);\n");
|
|
else {
|
|
/* perform conditional move */
|
|
if (!(insn->flags & EQ)) {
|
|
fprintf(stderr,"Standard conditional %s does not have the equality flag\n",insn->name);
|
|
exit(8);
|
|
}
|
|
printf(" if (op2 %c= 0)\n",((insn->flags & NOT) ? '!' : '='));
|
|
printf(" GPR[destreg] = op1;\n");
|
|
}
|
|
break ;
|
|
|
|
case SYNC:
|
|
printf(" SyncOperation(op1);\n");
|
|
break ;
|
|
|
|
case SYSCALL:
|
|
printf(" SignalException(SystemCall,instruction);\n");
|
|
break ;
|
|
|
|
case BREAK:
|
|
|
|
printf(" unsigned int break_code = instruction & HALT_INSTRUCTION_MASK;\n");
|
|
printf(" if ( break_code == (HALT_INSTRUCTION & HALT_INSTRUCTION_MASK)\n");
|
|
printf(" || break_code == (HALT_INSTRUCTION2 & HALT_INSTRUCTION_MASK))\n");
|
|
printf(" {\n");
|
|
printf(" sim_engine_halt (SD, CPU, NULL, cia,\n");
|
|
printf(" sim_exited, (unsigned int)(A0 & 0xFFFFFFFF));\n");
|
|
printf(" }\n");
|
|
printf(" else if ( break_code == (BREAKPOINT_INSTRUCTION & HALT_INSTRUCTION_MASK)\n");
|
|
printf(" || break_code == (BREAKPOINT_INSTRUCTION2 & HALT_INSTRUCTION_MASK))\n");
|
|
printf(" {\n");
|
|
printf(" if (STATE & simDELAYSLOT)\n");
|
|
printf(" PC = cia - 4; /* reference the branch instruction */\n");
|
|
printf(" else\n");
|
|
printf(" PC = cia;\n");
|
|
printf(" sim_engine_halt (SD, CPU, NULL, cia, sim_stopped, SIM_SIGTRAP);\n");
|
|
printf(" }\n");
|
|
|
|
printf(" SignalException(BreakPoint,instruction);\n");
|
|
break ;
|
|
|
|
case SDBBP:
|
|
printf(" SignalException(DebugBreakPoint,instruction);\n");
|
|
break ;
|
|
|
|
case TRAP:
|
|
{
|
|
int boolNOT = (insn->flags & NOT);
|
|
int boolEQ = (insn->flags & EQ);
|
|
int boolGT = (insn->flags & GT);
|
|
int boolLT = (insn->flags & LT);
|
|
int boolU = (insn->flags & UNSIGNED);
|
|
|
|
if (boolGT && boolLT) {
|
|
fprintf(stderr,"GT and LT specified for \"%s\"\n",insn->name);
|
|
exit(8);
|
|
}
|
|
|
|
if (boolNOT && (boolGT || boolLT)) {
|
|
fprintf(stderr,"NOT specified with GT or LT specified for \"%s\"\n",insn->name);
|
|
exit(8);
|
|
}
|
|
|
|
printf(" if ((%sword64)op1 ",(boolU ? "u" : ""));
|
|
printf("%c%s",(boolNOT ? '!' : (boolLT ? '<' : (boolGT ? '>' : '='))),(boolEQ ? "=" : ""));
|
|
printf(" (%sword64)op2)\n",(boolU ? "u" : ""));
|
|
printf(" SignalException(Trap,instruction);\n");
|
|
}
|
|
break ;
|
|
|
|
case SET:
|
|
{
|
|
int boolU = (insn->flags & UNSIGNED);
|
|
|
|
if (!(insn->flags & LT)) {
|
|
fprintf(stderr,"Set instruction without LT specified \"%s\"\n",insn->name);
|
|
exit(8);
|
|
}
|
|
|
|
printf(" if ((%sword64)op1 < (%sword64)op2)\n",(boolU ? "u" : ""),(boolU ? "u" : ""));
|
|
printf(" GPR[destreg] = 1;\n");
|
|
printf(" else\n");
|
|
printf(" GPR[destreg] = 0;\n");
|
|
}
|
|
break ;
|
|
|
|
case AND:
|
|
printf(" GPR[destreg] = (op1 & op2);\n");
|
|
break ;
|
|
|
|
case OR:
|
|
/* The default mips16 nop instruction does an or to register
|
|
zero; catch that case, so that we don't get useless warnings
|
|
from the simulator. */
|
|
if (mips16)
|
|
printf (" if (destreg != 0)\n");
|
|
printf(" GPR[destreg] = %s(op1 | op2);\n",((insn->flags & NOT) ? "~" : ""));
|
|
break ;
|
|
|
|
case XOR:
|
|
printf(" GPR[destreg] = (op1 ^ op2);\n");
|
|
break ;
|
|
|
|
case DECODE:
|
|
printf(" DecodeCoproc(instruction);\n");
|
|
break ;
|
|
|
|
case CACHE:
|
|
/* 16-bit offset is sign-extended and added to the base register to make a virtual address */
|
|
/* The virtual address is translated to a physical address using the TLB */
|
|
/* The hint specifies a cache operation for that address */
|
|
printf(" address_word vaddr = (op1 + offset);\n");
|
|
printf(" address_word paddr;\n");
|
|
printf(" int uncached;\n");
|
|
/* NOTE: We are assuming that the AddressTranslation is a load: */
|
|
printf(" if (AddressTranslation(vaddr,isDATA,isLOAD,&paddr,&uncached,isTARGET,isREAL))\n");
|
|
printf(" CacheOp(hint,vaddr,paddr,instruction);\n");
|
|
break;
|
|
|
|
case MADD16: /* VR4100 specific multiply-add instructions */
|
|
/* Some of this code is shared with the standard multiply
|
|
routines, so an effort should be made to merge where
|
|
possible. */
|
|
if (features & FEATURE_WARN_RESULT) {
|
|
/* Give user a warning if either op1 or op2 are not 16bit signed integers */
|
|
printf(" if (NOTHALFWORDVALUE(op1) || NOTHALFWORDVALUE(op2))\n");
|
|
printf(" sim_io_eprintf(sd,\"MADD16 operation with non-16bit operands\\n\");\n");
|
|
}
|
|
printf(" {\n");
|
|
printf(" uword64 temp = (op1 * op2);\n"); /* 16x16 multiply */
|
|
if (GETDATASIZEINSN(insn) == DOUBLEWORD) {
|
|
printf(" LO = LO + temp;\n");
|
|
} else { /* WORD */
|
|
printf(" temp += (SET64HI(WORD64LO(HI)) | WORD64LO(LO));\n");
|
|
printf(" LO = SIGNEXTEND((%s)WORD64LO(temp),32);\n",regtype);
|
|
printf(" HI = SIGNEXTEND((%s)WORD64HI(temp),32);\n",regtype);
|
|
}
|
|
printf(" }\n");
|
|
break;
|
|
|
|
case RSVD: /* "Reserved Instruction" on MIPS IV, or if co-proc 3 absent. Otherwise "CoProcessorUnusable" */
|
|
if (doisa < 4) {
|
|
printf(" if (CoProcPresent(3))\n");
|
|
printf(" SignalExceptionCoProcessorUnusable ();\n");
|
|
printf(" else\n");
|
|
}
|
|
printf(" SignalException(ReservedInstruction,instruction);\n");
|
|
break ;
|
|
|
|
case JUMP:
|
|
if (insn->flags & LINK) {
|
|
if (!(insn->flags & REG))
|
|
printf(" int destreg = 31;\n");
|
|
printf(" GPR[destreg] = (PC + %d); /* NOTE: The PC is already %d ahead within the simulator */\n",
|
|
mips16 ? 2 : 4, mips16 ? 2 : 4);
|
|
}
|
|
|
|
if (insn->flags & NOT)
|
|
printf(" op1 ^= 1;\n");
|
|
|
|
printf(" /* NOTE: ??? Gdb gets confused if the PC is sign-extended,\n");
|
|
printf(" so we just truncate it to 32 bits here. */\n");
|
|
printf(" op1 = WORD64LO(op1);\n");
|
|
printf(" /* NOTE: The jump occurs AFTER the next instruction has been executed */\n");
|
|
printf(" DSPC = op1;\n");
|
|
if ((insn->flags & LINK)
|
|
&& ! (insn->flags & REG))
|
|
printf(" JALDELAYSLOT();\n");
|
|
else
|
|
printf(" DELAYSLOT();\n");
|
|
break ;
|
|
|
|
case BRANCH: /* execute delay slot instruction before branch unless (LIKELY && branch_not_taken) */
|
|
if (insn->flags & FP) {
|
|
if (doisa < 4) {
|
|
printf(" if (condition_code != 0)\n");
|
|
printf(" SignalException(ReservedInstruction,instruction);\n");
|
|
printf(" else {\n");
|
|
}
|
|
/* "PREVCOC1()" should be the COC1 value at the start of the preceding instruction */
|
|
printf(" int condition = (%s == boolean);\n",((doisa < 4) ? "PREVCOC1()" : "GETFCC(condition_code)"));
|
|
} else {
|
|
if ((insn->flags & NOT) && !(insn->flags & EQ)) {
|
|
fprintf(stderr,"NOT specified when not EQ in \"%s\"\n",insn->name);
|
|
exit(7);
|
|
}
|
|
if ((insn->flags & NOT) && (insn->flags & (GT | LT))) {
|
|
fprintf(stderr,"NOT specified with GT or LT in \"%s\"\n",insn->name);
|
|
exit(7);
|
|
}
|
|
/* GT LT */
|
|
if (insn->flags & GT)
|
|
printf(" int condition = (op1 >%s 0);\n",((insn->flags & EQ) ? "=" : ""));
|
|
else
|
|
if (insn->flags & LT)
|
|
printf(" int condition = (op1 <%s 0);\n",((insn->flags & EQ) ? "=" : ""));
|
|
else
|
|
if (insn->flags & EQ)
|
|
printf(" int condition = (op1 %c= op2);\n",((insn->flags & NOT) ? '!' : '='));
|
|
}
|
|
|
|
if (insn->flags & LINK) {
|
|
if (features & FEATURE_WARN_R31) {
|
|
printf(" if (((instruction >> %d) & 0x%08X) == 31)\n",OP_SH_RS,OP_MASK_RS);
|
|
printf(" sim_io_eprintf(sd,\"Branch with link using r31 as source operand\\n\");\n");
|
|
}
|
|
printf(" GPR[31] = (PC + 4); /* NOTE: PC is already 8 ahead */\n");
|
|
}
|
|
|
|
if (! mips16) {
|
|
printf(" /* NOTE: The branch occurs AFTER the next instruction has been executed */\n");
|
|
printf(" if (condition) {\n");
|
|
printf(" DSPC = (PC + offset);\n");
|
|
printf(" DELAYSLOT();\n");
|
|
printf(" }\n");
|
|
} else {
|
|
/* No delayed slots for mips16 branches. */
|
|
printf(" if (condition)\n");
|
|
printf(" PC = PC + offset;\n");
|
|
}
|
|
if ((insn->flags & FP) && (doisa != 1)) {
|
|
printf(" else if (likely) {\n");
|
|
printf(" NULLIFY();\n");
|
|
printf(" }\n");
|
|
} else if (insn->flags & LIKELY) {
|
|
printf(" else\n");
|
|
printf(" NULLIFY();\n");
|
|
}
|
|
if ((insn->flags & FP) && (doisa < 4))
|
|
printf(" }\n");
|
|
break ;
|
|
|
|
case PREFETCH: /* The beginning is shared with normal load operations */
|
|
case LOAD:
|
|
case STORE:
|
|
{
|
|
int isload = ((insn->type == LOAD) || (insn->type == PREFETCH));
|
|
int datalen;
|
|
char *accesslength = "<UNKNOWN>";
|
|
|
|
switch (GETDATASIZEINSN(insn)) {
|
|
case BYTE :
|
|
datalen = 1;
|
|
accesslength = "AccessLength_BYTE";
|
|
break ;
|
|
|
|
case HALFWORD :
|
|
datalen = 2;
|
|
accesslength = "AccessLength_HALFWORD";
|
|
break ;
|
|
|
|
case WORD :
|
|
datalen = 4;
|
|
accesslength = "AccessLength_WORD";
|
|
break ;
|
|
|
|
case DOUBLEWORD :
|
|
datalen = 8;
|
|
accesslength = "AccessLength_DOUBLEWORD";
|
|
break ;
|
|
/* start-sanitize-r5900 */
|
|
|
|
case QUADWORD :
|
|
datalen = 16;
|
|
accesslength = "AccessLength_QUADWORD";
|
|
break ;
|
|
/* end-sanitize-r5900 */
|
|
}
|
|
|
|
if (insn->flags & REG)
|
|
printf(" address_word vaddr = ((uword64)op1 + op2);\n");
|
|
else
|
|
printf(" address_word vaddr = ((uword64)op1 + offset);\n");
|
|
printf(" address_word paddr;\n");
|
|
printf(" int uncached;\n");
|
|
|
|
/* The following check should only occur on normal (non-shifted) memory loads */
|
|
if ((datalen != 1) && !(insn->flags & (LEFT | RIGHT))) {
|
|
printf(" if ((vaddr & %d) != 0)\n",(datalen - 1));
|
|
printf(" SignalException%s();\n",(isload ? "AddressLoad" : "AddressStore"));
|
|
printf(" else\n") ;
|
|
}
|
|
|
|
printf(" {\n");
|
|
printf(" if (AddressTranslation(vaddr,isDATA,%s,&paddr,&uncached,isTARGET,isREAL))\n",(isload ? "isLOAD" : "isSTORE"));
|
|
|
|
if (insn->type == PREFETCH)
|
|
printf(" Prefetch(uncached,paddr,vaddr,isDATA,hint);\n");
|
|
else {
|
|
printf(" {\n");
|
|
printf(" uword64 memval = 0;\n");
|
|
printf(" uword64 memval1 = 0;\n");
|
|
|
|
if ((insn->flags & COPROC) && ((datalen != 4) && (datalen != 8))) {
|
|
fprintf(stderr,"Co-processor transfer operation not WORD or DOUBLEWORD in length \"%s\"\n",insn->name);
|
|
exit(6);
|
|
}
|
|
|
|
if (insn->flags & (LEFT | RIGHT)) {
|
|
if ((insn->flags & LEFT) && (insn->flags & RIGHT)) {
|
|
fprintf(stderr,"Memory transfer with both LEFT and RIGHT specified \"%s\"\n",insn->name);
|
|
exit(4);
|
|
}
|
|
|
|
switch (datalen) {
|
|
case 8:
|
|
if (!(features & FEATURE_IGEN))
|
|
{
|
|
if (!proc64) {
|
|
fprintf(stderr,"DOUBLEWORD shifted memory transfers only valid for 64-bit processors \"%s\"\n",insn->name);
|
|
exit(4);
|
|
}
|
|
}
|
|
/* fall through to... */
|
|
case 4:
|
|
{
|
|
printf(" uword64 mask = %d;\n",((datalen == 8) ? 0x7 : 0x3));
|
|
printf(" unsigned int reverse = (ReverseEndian ? mask : 0);\n");
|
|
printf(" unsigned int bigend = (BigEndianCPU ? mask : 0);\n");
|
|
printf(" int byte;\n");
|
|
printf(" paddr = ((paddr & ~mask) | ((paddr & mask) ^ reverse));\n");
|
|
printf(" byte = ((vaddr & mask) ^ bigend);\n");
|
|
printf(" if (%sBigEndianMem)\n",((insn->flags & LEFT) ? "!" : ""));
|
|
printf(" paddr &= ~mask;\n");
|
|
|
|
if (isload) {
|
|
if (insn->flags & LEFT)
|
|
{
|
|
printf(" LoadMemory(&memval,&memval1,uncached,byte,paddr,vaddr,isDATA,isREAL);\n");
|
|
}
|
|
else
|
|
{
|
|
printf(" LoadMemory(&memval,&memval1,uncached,(%d - byte),paddr,vaddr,isDATA,isREAL);\n",(datalen - 1));
|
|
}
|
|
}
|
|
|
|
if (insn->flags & LEFT) {
|
|
if (isload) {
|
|
/* For WORD transfers work out if the value will
|
|
be in the top or bottom of the DOUBLEWORD
|
|
returned: */
|
|
#if 1
|
|
build_endian_shift(proc64,datalen,2,s_right,32);
|
|
#else
|
|
if (proc64 && (datalen == 4)) {
|
|
printf(" if ((vaddr & (1 << 2)) ^ (BigEndianCPU << 2)) {\n");
|
|
printf(" memval >>= 32;\n");
|
|
printf(" }\n");
|
|
}
|
|
#endif
|
|
printf(" GPR[destreg] = ((memval << ((%d - byte) * 8)) | (GPR[destreg] & (((uword64)1 << ((%d - byte) * 8)) - 1)));\n",(datalen - 1),(datalen - 1));
|
|
if (proc64 && (datalen == 4))
|
|
printf(" GPR[destreg] = SIGNEXTEND(GPR[destreg],32);\n");
|
|
} else { /* store */
|
|
printf(" memval = (op2 >> (8 * (%d - byte)));\n",(datalen - 1));
|
|
#if 1
|
|
build_endian_shift(proc64,datalen,2,s_left,32);
|
|
#else
|
|
/* TODO: This is duplicated in the LOAD code
|
|
above - and the RIGHT LOAD and STORE code
|
|
below. It should be merged if possible. */
|
|
if (proc64 && (datalen == 4)) {
|
|
printf(" if ((vaddr & (1 << 2)) ^ (BigEndianCPU << 2)) {\n");
|
|
printf(" memval <<= 32;\n");
|
|
printf(" }\n");
|
|
}
|
|
#endif
|
|
printf(" StoreMemory(uncached,byte,memval,memval1,paddr,vaddr,isREAL);\n");
|
|
}
|
|
} else { /* RIGHT */
|
|
if (isload) {
|
|
#if 1
|
|
build_endian_shift(proc64,datalen,2,s_right,32);
|
|
#else
|
|
if (proc64 && (datalen == 4)) {
|
|
printf(" if ((vaddr & (1 << 2)) ^ (BigEndianCPU << 2)) {\n");
|
|
printf(" memval >>= 32;\n");
|
|
printf(" }\n");
|
|
}
|
|
#endif
|
|
printf(" {\n");
|
|
printf(" uword64 srcmask;\n");
|
|
/* All of this extra code is just a bodge
|
|
required because some hosts don't allow
|
|
((v) << 64). The SPARC just leaves the (v)
|
|
value un-touched. */
|
|
printf(" if (byte == 0)\n");
|
|
printf(" srcmask = 0;\n");
|
|
printf(" else\n");
|
|
printf(" srcmask = ((uword64)-1 << (8 * (%d - byte)));\n",datalen);
|
|
printf(" GPR[destreg] = ((GPR[destreg] & srcmask) | (memval >> (8 * byte)));\n");
|
|
printf(" }\n");
|
|
if (proc64 && (datalen == 4))
|
|
printf(" GPR[destreg] = SIGNEXTEND(GPR[destreg],32);\n");
|
|
} else { /* store */
|
|
printf(" memval = ((uword64) op2 << (byte * 8));\n");
|
|
build_endian_shift(proc64,datalen,2,s_left,32);
|
|
printf(" StoreMemory(uncached,(%s - byte),memval,memval1,paddr,vaddr,isREAL);\n",accesslength);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
fprintf(stderr,"Shifted memory transfer not WORD or DOUBLEWORD in length \"%s\"\n",insn->name);
|
|
exit(6);
|
|
}
|
|
} else { /* normal memory transfer */
|
|
if (!(features & FEATURE_IGEN))
|
|
{
|
|
if (!(insn->flags & COPROC) && ((datalen == 8) || ((datalen == 4) & (insn->flags & UNSIGNED))) && !proc64) {
|
|
fprintf(stderr,"Operation not available with 32bit wide memory access \"%s\"\n",insn->name);
|
|
exit(4);
|
|
/* TODO: The R4000 documentation states that a LWU
|
|
instruction executed when in a 32bit processor mode
|
|
should cause a ReservedInstruction exception. This
|
|
will mean adding a run-time check into the code
|
|
sequence. */
|
|
}
|
|
}
|
|
|
|
if (isload) {
|
|
#if 1 /* see the comments attached to LOADDRMASK above */
|
|
printf(" uword64 mask = 0x7;\n");
|
|
#else
|
|
printf(" uword64 mask = %d;\n",(proc64 ? 0x7 : 0x3));
|
|
#endif
|
|
printf(" unsigned int shift = %d;\n",(datalen >> 1));
|
|
printf(" unsigned int reverse UNUSED = (ReverseEndian ? (mask >> shift) : 0);\n");
|
|
printf(" unsigned int bigend UNUSED = (BigEndianCPU ? (mask >> shift) : 0);\n");
|
|
printf(" unsigned int byte UNUSED;\n");
|
|
|
|
/* TODO: This should really also check for 32bit world performing 32bit access */
|
|
if (datalen < 8)
|
|
/* not for DOUBLEWORD */
|
|
/* start-sanitize-r5900 */
|
|
/* not for QUADWORD */
|
|
/* end-sanitize-r5900 */
|
|
printf(" paddr = ((paddr & ~mask) | ((paddr & mask) ^ (reverse << shift)));\n");
|
|
|
|
printf(" LoadMemory(&memval,&memval1,uncached,%s,paddr,vaddr,isDATA,isREAL);\n",accesslength);
|
|
|
|
/* The following will only make sense if the
|
|
"LoadMemory" above returns a DOUBLEWORD entity */
|
|
if (datalen < 8) {
|
|
/* not for DOUBLEWORD */
|
|
/* start-sanitize-r5900 */
|
|
/* not for QUADWORD */
|
|
/* end-sanitize-r5900 */
|
|
int valmask;
|
|
switch (datalen) {
|
|
case 1:
|
|
valmask = 0xFF;
|
|
break;
|
|
|
|
case 2:
|
|
valmask = 0xFFFF;
|
|
break;
|
|
|
|
case 4:
|
|
valmask = 0xFFFFFFFF;
|
|
break;
|
|
|
|
default:
|
|
fprintf(stderr,"Unrecognised datalen (%d) when processing \"%s\"\n",datalen,insn->name);
|
|
exit(4);
|
|
}
|
|
printf(" byte = ((vaddr & mask) ^ (bigend << shift));\n");
|
|
/* NOTE: The R4000 user manual has the COP_LW
|
|
occuring in the same cycle as the rest of the
|
|
instruction, yet the MIPS IV shows the operation
|
|
happening on the next cycle. To keep the simulator
|
|
simple, this code follows the R4000
|
|
manual. Experimentation with a silicon
|
|
implementation will be needed to ascertain the
|
|
correct operation. */
|
|
if (insn->flags & COPROC)
|
|
printf(" COP_LW(%s,destreg,(unsigned int)",
|
|
((insn->flags & REG)
|
|
? "1"
|
|
: "((instruction >> 26) & 0x3)"));
|
|
else
|
|
printf(" GPR[destreg] = (");
|
|
|
|
if (insn->flags & SIGNEXTEND)
|
|
printf("SIGNEXTEND(");
|
|
printf("((memval >> (8 * byte)) & 0x%08X)",valmask);
|
|
if (insn->flags & SIGNEXTEND)
|
|
printf(",%d)",(datalen * 8));
|
|
printf(");\n");
|
|
} else {
|
|
if (insn->flags & COPROC)
|
|
printf(" COP_LD(%s,destreg,memval);;\n",
|
|
((insn->flags & REG)
|
|
? "1"
|
|
: "((instruction >> 26) & 0x3)"));
|
|
else
|
|
{
|
|
printf(" GPR[destreg] = memval;\n");
|
|
if (datalen > 8)
|
|
printf(" GPR1[destreg] = memval1;\n");
|
|
}
|
|
}
|
|
} else { /* store operation */
|
|
if ((datalen == 1) || (datalen == 2)) {
|
|
/* SH and SB */
|
|
#if 1 /* see the comments attached to LOADDRMASK above */
|
|
printf(" uword64 mask = 0x7;\n");
|
|
#else
|
|
printf(" uword64 mask = %d;\n",(proc64 ? 0x7 : 0x3));
|
|
#endif
|
|
printf(" unsigned int shift = %d;\n",(datalen >> 1));
|
|
printf(" unsigned int reverse = (ReverseEndian ? (mask >> shift) : 0);\n");
|
|
printf(" unsigned int bigend = (BigEndianCPU ? (mask >> shift) : 0);\n");
|
|
printf(" unsigned int byte;\n");
|
|
|
|
printf(" paddr = ((paddr & ~mask) | ((paddr & mask) ^ (reverse << shift)));\n");
|
|
printf(" byte = ((vaddr & mask) ^ (bigend << shift));\n");
|
|
printf(" memval = ((uword64) op2 << (8 * byte));\n");
|
|
} else
|
|
if (datalen == 4) { /* SC and SW */
|
|
#if 1 /* see the comments attached to LOADDRMASK above */
|
|
printf(" uword64 mask = 0x7;\n");
|
|
#else
|
|
printf(" uword64 mask = %d;\n",(proc64 ? 0x7 : 0x3));
|
|
#endif
|
|
printf(" unsigned int byte;\n");
|
|
printf(" paddr = ((paddr & ~mask) | ((paddr & mask) ^ (ReverseEndian << 2)));\n");
|
|
printf(" byte = ((vaddr & mask) ^ (BigEndianCPU << 2));\n");
|
|
if (insn->flags & COPROC)
|
|
printf(" memval = (((uword64)COP_SW(%s,%s)) << (8 * byte));\n",
|
|
((insn->flags & REG)
|
|
? "1"
|
|
: "((instruction >> 26) & 0x3)"),
|
|
((insn->flags & FP) ? "fs" : "destreg"));
|
|
else
|
|
printf(" memval = ((uword64) op2 << (8 * byte));\n");
|
|
} else if (datalen <= 8) { /* SD and SCD */
|
|
if (! (features & FEATURE_IGEN))
|
|
{
|
|
if (!(insn->flags & COPROC) && ((datalen == 8) || ((datalen == 4) & (insn->flags & UNSIGNED))) && !proc64) {
|
|
fprintf(stderr,"Operation not available with 32bit wide memory access \"%s\"\n",insn->name);
|
|
exit(4);
|
|
}
|
|
}
|
|
if (insn->flags & COPROC)
|
|
printf(" memval = (uword64)COP_SD(%s,%s);\n",
|
|
((insn->flags & REG)
|
|
? "1"
|
|
: "((instruction >> 26) & 0x3)"),
|
|
((insn->flags & FP) ? "fs" : "destreg"));
|
|
else
|
|
printf(" memval = op2;\n");
|
|
} else { /* wider than 8 */
|
|
if (insn->flags & COPROC) {
|
|
fprintf(stderr,"COPROC not available for 128 bit operations \"%s\"\n",insn->name);
|
|
exit(4);
|
|
}
|
|
printf(" memval = rt_reg;\n");
|
|
printf(" memval1 = rt_reg1;\n");
|
|
}
|
|
|
|
if (insn->flags & ATOMIC)
|
|
printf(" if (LLBIT)\n");
|
|
|
|
printf(" {\n");
|
|
printf(" StoreMemory(uncached,%s,memval,memval1,paddr,vaddr,isREAL);\n",accesslength);
|
|
printf(" }\n");
|
|
}
|
|
|
|
if (insn->flags & ATOMIC) {
|
|
if ((datalen != 4) && (datalen != 8)) {
|
|
fprintf(stderr,"ATOMIC can only be applied to WORD and DOUBLEWORD instructions \"%s\"\n",insn->name);
|
|
exit(4);
|
|
} else
|
|
if (isload)
|
|
printf(" LLBIT = 1;\n");
|
|
else {
|
|
/* The documentation states that:
|
|
|
|
SC *WILL* fail if coherent store into the same
|
|
block occurs, or if an exception occurs between
|
|
the LL and SC instructions.
|
|
|
|
SC *MAY* fail if a load, store or prefetch is
|
|
executed on the processor (VR4300 doesn't seem
|
|
to), or if the instructions between the LL and
|
|
SC are not in a 2048byte contiguous VM range.
|
|
|
|
SC *MUST* have been preceded by an LL
|
|
(i.e. LLBIT will be set), and it must use the
|
|
same Vaddr, Paddr and cache-coherence algorithm
|
|
as the LL (which means we should store this
|
|
information from the load-conditional).
|
|
*/
|
|
printf(" GPR[(instruction >> %d) & 0x%08X] = LLBIT;\n",OP_SH_RT,OP_MASK_RT);
|
|
}
|
|
}
|
|
}
|
|
printf(" }\n");
|
|
}
|
|
printf(" }\n");
|
|
}
|
|
break ;
|
|
|
|
case FPPREFX:
|
|
/* This code could be merged with the PREFIX generation above: */
|
|
printf(" address_word vaddr = ((uword64)op1 + (uword64)op2);\n");
|
|
printf(" address_word paddr;\n");
|
|
printf(" int uncached;\n");
|
|
printf(" if (AddressTranslation(vaddr,isDATA,isLOAD,&paddr,&uncached,isTARGET,isREAL))\n");
|
|
printf(" Prefetch(uncached,paddr,vaddr,isDATA,fs);\n");
|
|
break ;
|
|
|
|
case FPMOVEC:
|
|
if (insn->flags & CONTROL) {
|
|
/* The following "magic" of interpreting the FP
|
|
control-register number would not be needed if we were not
|
|
trying to match our internal register numbers with those
|
|
used by GDB. */
|
|
printf(" if (to) {\n");
|
|
if (doisa < 4) {
|
|
printf(" if (fs == 0) {\n");
|
|
printf(" PENDING_FILL((fs + FCR0IDX),WORD64LO(GPR[ft]));\n");
|
|
printf(" } else if (fs == 31) {\n");
|
|
printf(" PENDING_FILL((fs + FCR31IDX),WORD64LO(GPR[ft]));\n");
|
|
printf(" } /* else NOP */\n");
|
|
printf(" PENDING_FILL(COCIDX,0); /* special case */\n");
|
|
} else {
|
|
printf(" if (fs == 0) {\n");
|
|
printf(" FCR0 = WORD64LO(GPR[ft]);\n");
|
|
printf(" } else if (fs == 31) {\n");
|
|
printf(" FCR31 = WORD64LO(GPR[ft]);\n");
|
|
printf(" } /* else NOP */\n");
|
|
printf(" SETFCC(0,((FCR31 & (1 << 23)) ? 1 : 0)); /* COC[1] */\n");
|
|
}
|
|
printf(" } else { /* control from */\n");
|
|
if (doisa < 4) {
|
|
printf(" if (fs == 0) {\n");
|
|
printf(" PENDING_FILL(ft,SIGNEXTEND(FCR0,32));\n");
|
|
printf(" } else if (fs == 31) {\n");
|
|
printf(" PENDING_FILL(ft,SIGNEXTEND(FCR31,32));\n");
|
|
printf(" } /* else NOP */\n");
|
|
} else {
|
|
printf(" if (fs == 0) {\n");
|
|
printf(" GPR[ft] = SIGNEXTEND(FCR0,32);\n");
|
|
printf(" } else if (fs == 31) {\n");
|
|
printf(" GPR[ft] = SIGNEXTEND(FCR31,32);\n");
|
|
printf(" } /* else NOP */\n");
|
|
}
|
|
printf(" }\n");
|
|
} else {
|
|
printf(" if (to) {\n");
|
|
if (GETDATASIZEINSN(insn) == WORD) {
|
|
if (doisa < 4) {
|
|
printf(" if (SizeFGR() == 64) {\n");
|
|
printf(" PENDING_FILL((fs + FGRIDX),(SET64HI(0xDEADC0DE) | WORD64LO(GPR[ft])));\n");
|
|
printf(" } else { \n");
|
|
printf(" PENDING_FILL((fs + FGRIDX),WORD64LO(GPR[ft]));\n");
|
|
printf(" }\n");
|
|
} else {
|
|
printf(" if (SizeFGR() == 64)\n");
|
|
printf(" FGR[fs] = (SET64HI(0xDEADC0DE) | WORD64LO(GPR[ft]));\n");
|
|
printf(" else\n");
|
|
printf(" FGR[fs] = WORD64LO(GPR[ft]);\n");
|
|
printf(" FPR_STATE[fs] = fmt_uninterpreted;\n");
|
|
}
|
|
} else if (GETDATASIZEINSN(insn) == DOUBLEWORD) {
|
|
if (doisa < 4) {
|
|
printf(" if (SizeFGR() == 64) {\n");
|
|
printf(" PENDING_FILL((fs + FGRIDX),GPR[ft]);\n");
|
|
printf(" } else\n");
|
|
printf(" if ((fs & 0x1) == 0)\n");
|
|
printf(" {\n");
|
|
printf(" PENDING_FILL(((fs + 1) + FGRIDX),WORD64HI(GPR[ft]));\n");
|
|
printf(" PENDING_FILL((fs + FGRIDX),WORD64LO(GPR[ft]));\n");
|
|
printf(" }\n");
|
|
if (features & FEATURE_WARN_RESULT) {
|
|
printf(" else\n");
|
|
printf(" UndefinedResult();\n");
|
|
}
|
|
} else {
|
|
printf(" if (SizeFGR() == 64) {\n");
|
|
printf(" FGR[fs] = GPR[ft];\n");
|
|
printf(" FPR_STATE[fs] = fmt_uninterpreted;\n");
|
|
printf(" } else\n");
|
|
printf(" if ((fs & 0x1) == 0)\n");
|
|
printf(" {\n");
|
|
printf(" FGR[fs + 1] = WORD64HI(GPR[ft]);\n");
|
|
printf(" FGR[fs] = WORD64LO(GPR[ft]);\n");
|
|
printf(" FPR_STATE[fs + 1] = fmt_uninterpreted;\n");
|
|
printf(" FPR_STATE[fs] = fmt_uninterpreted;\n");
|
|
printf(" }\n");
|
|
if (features & FEATURE_WARN_RESULT) {
|
|
printf(" else\n");
|
|
printf(" UndefinedResult();\n");
|
|
}
|
|
}
|
|
} else {
|
|
fprintf(stderr,"Invalid data width specified in FPU Move operation\n");
|
|
exit(1);
|
|
}
|
|
printf(" } else {\n");
|
|
if (GETDATASIZEINSN(insn) == WORD) {
|
|
if (doisa < 4) /* write-back occurs in next cycle */
|
|
printf(" PENDING_FILL(ft,SIGNEXTEND(FGR[fs],32));\n");
|
|
else /* in this cycle */
|
|
printf(" GPR[ft] = SIGNEXTEND(FGR[fs],32);\n");
|
|
} else if (GETDATASIZEINSN(insn) == DOUBLEWORD) {
|
|
if (doisa < 4) {
|
|
printf(" if (SizeFGR() == 64) {\n");
|
|
printf(" PENDING_FILL(ft,FGR[fs]);\n");
|
|
printf(" } else\n");
|
|
printf(" if ((fs & 0x1) == 0) {\n");
|
|
printf(" PENDING_FILL(ft,(SET64HI(FGR[fs+1]) | FGR[fs]));\n");
|
|
printf(" } else {\n");
|
|
printf(" PENDING_FILL(ft,SET64HI(0xDEADC0DE) | 0xBAD0BAD0);\n");
|
|
if (features & FEATURE_WARN_RESULT)
|
|
printf(" UndefinedResult();\n");
|
|
printf(" }\n");
|
|
} else {
|
|
printf(" if (SizeFGR() == 64)\n");
|
|
printf(" GPR[ft] = FGR[fs];\n");
|
|
printf(" else\n");
|
|
printf(" if ((fs & 0x1) == 0)\n");
|
|
printf(" GPR[ft] = (SET64HI(FGR[fs + 1]) | FGR[fs]);\n");
|
|
printf(" else {\n");
|
|
printf(" GPR[ft] = (SET64HI(0xDEADC0DE) | 0xBAD0BAD0);\n");
|
|
if (features & FEATURE_WARN_RESULT)
|
|
printf(" UndefinedResult();\n");
|
|
printf(" }\n");
|
|
}
|
|
} else {
|
|
fprintf(stderr,"Invalid data width specified in FPU Move operation\n");
|
|
exit(1);
|
|
}
|
|
printf(" }\n");
|
|
}
|
|
break ;
|
|
|
|
case FPMOVE:
|
|
if (insn->flags & CONDITIONAL) {
|
|
if (insn->flags & INTEGER) { /* moving GPR - testing FGR */
|
|
printf(" if (GETFCC(condition_code) == boolean)\n");
|
|
printf(" GPR[destreg] = op1;\n");
|
|
} else {
|
|
if (insn->flags & EQ) /* moving FGR - testing GPR */
|
|
printf(" if (op2 %c= 0)\n",((insn->flags & NOT) ? '!' : '='));
|
|
else
|
|
printf(" if (GETFCC(condition_code) == boolean)\n");
|
|
printf(" StoreFPR(destreg,format,ValueFPR(fs,format));\n");
|
|
printf(" else\n");
|
|
printf(" StoreFPR(destreg,format,ValueFPR(destreg,format));\n");
|
|
}
|
|
} else { /* simple MOVE */
|
|
printf(" StoreFPR(destreg,format,ValueFPR(fs,format));\n");
|
|
}
|
|
break ;
|
|
|
|
case FPNEG:
|
|
printf(" if ((format != fmt_single) && (format != fmt_double))\n");
|
|
printf(" SignalException(ReservedInstruction,instruction);\n");
|
|
printf(" else\n");
|
|
printf(" StoreFPR(destreg,format,Negate(ValueFPR(fs,format),format));\n");
|
|
break ;
|
|
|
|
case FPABS:
|
|
printf(" if ((format != fmt_single) && (format != fmt_double))\n");
|
|
printf(" SignalException(ReservedInstruction,instruction);\n");
|
|
printf(" else\n");
|
|
printf(" StoreFPR(destreg,format,AbsoluteValue(ValueFPR(fs,format),format));\n");
|
|
break ;
|
|
|
|
case FPDIV:
|
|
printf(" if ((format != fmt_single) && (format != fmt_double))\n");
|
|
printf(" SignalException(ReservedInstruction,instruction);\n");
|
|
printf(" else\n");
|
|
printf(" StoreFPR(destreg,format,Divide(ValueFPR(fs,format),ValueFPR(ft,format),format));\n");
|
|
break ;
|
|
|
|
case FPMUL:
|
|
printf(" if ((format != fmt_single) && (format != fmt_double))\n");
|
|
printf(" SignalException(ReservedInstruction,instruction);\n");
|
|
printf(" else\n");
|
|
printf(" StoreFPR(destreg,format,Multiply(ValueFPR(fs,format),ValueFPR(ft,format),format));\n");
|
|
break ;
|
|
|
|
case FPRECIP:
|
|
printf(" if ((format != fmt_single) && (format != fmt_double))\n");
|
|
printf(" SignalException(ReservedInstruction,instruction);\n");
|
|
printf(" else\n");
|
|
printf(" StoreFPR(destreg,format,Recip(ValueFPR(fs,format),format));\n");
|
|
break ;
|
|
|
|
case FPSQRT:
|
|
printf(" if ((format != fmt_single) && (format != fmt_double))\n");
|
|
printf(" SignalException(ReservedInstruction,instruction);\n");
|
|
printf(" else\n");
|
|
printf(" StoreFPR(destreg,format,%s(SquareRoot(ValueFPR(fs,format),format)%s));\n",
|
|
((insn->flags & RECIP) ? "Recip" : ""),
|
|
((insn->flags & RECIP) ? ",format" : ""));
|
|
break ;
|
|
|
|
case FPCEIL:
|
|
case FPFLOOR:
|
|
case FPTRUNC:
|
|
case FPROUND:
|
|
{
|
|
char *op = "";
|
|
char *type = "";
|
|
|
|
switch (insn->type) {
|
|
case FPCEIL:
|
|
op = "FP_RM_TOPINF";
|
|
break;
|
|
case FPFLOOR:
|
|
op = "FP_RM_TOMINF";
|
|
break;
|
|
case FPTRUNC:
|
|
op = "FP_RM_TOZERO";
|
|
break;
|
|
case FPROUND:
|
|
op = "FP_RM_NEAREST";
|
|
break;
|
|
default:
|
|
fprintf(stderr,"Error: Handled missing for FP reason code %d\n",insn->type);
|
|
exit(1);
|
|
}
|
|
|
|
switch (GETDATASIZEINSN(insn)) {
|
|
case WORD :
|
|
type = "fmt_word";
|
|
break;
|
|
case DOUBLEWORD :
|
|
type = "fmt_long";
|
|
break;
|
|
default:
|
|
fprintf(stderr,"Error in instruction encoding table for FP %s operation (not WORD or DOUBLEWORD)\n",op);
|
|
exit(1);
|
|
}
|
|
printf(" if ((format != fmt_single) && (format != fmt_double))\n");
|
|
printf(" SignalException(ReservedInstruction,instruction);\n");
|
|
printf(" else\n");
|
|
printf(" StoreFPR(destreg,%s,Convert(%s,ValueFPR(fs,format),format,%s));\n",type,op,type);
|
|
}
|
|
break ;
|
|
|
|
case FPCONVERT:
|
|
{
|
|
char *type = "";
|
|
switch (GETDATASIZEINSN(insn)) {
|
|
case SINGLE:
|
|
type = "fmt_single";
|
|
break;
|
|
case DOUBLE:
|
|
type = "fmt_double";
|
|
break;
|
|
case WORD:
|
|
type = "fmt_word";
|
|
break;
|
|
case DOUBLEWORD:
|
|
type = "fmt_long";
|
|
break;
|
|
default :
|
|
fprintf(stderr,"Error: Unknown data size %d in FPCONVERT instruction\n",GETDATASIZEINSN(insn));
|
|
exit(1);
|
|
}
|
|
|
|
/* Not all combinations of conversion are valid at the
|
|
moment: When converting to a fixed-point format, only
|
|
floating-point sources are allowed. */
|
|
printf(" if ((format == %s) | %s)\n",type,((insn->flags & FIXED) ? "((format == fmt_long) || (format == fmt_word))": "0"));
|
|
printf(" SignalException(ReservedInstruction,instruction);\n");
|
|
printf(" else\n");
|
|
printf(" StoreFPR(destreg,%s,Convert(GETRM(),ValueFPR(fs,format),format,%s));\n",type,type);
|
|
}
|
|
break ;
|
|
|
|
case FPSUB:
|
|
if (insn->flags & MULTIPLY) {
|
|
char *type = "";
|
|
switch (GETDATASIZEINSN(insn)) {
|
|
case SINGLE:
|
|
type = "fmt_single";
|
|
break;
|
|
case DOUBLE:
|
|
type = "fmt_double";
|
|
break;
|
|
default:
|
|
fprintf(stderr,"Error: Invalid data size %d for FPSUB operation\n",GETDATASIZEINSN(insn));
|
|
exit(1);
|
|
}
|
|
if (insn->flags & NOT)
|
|
printf (" StoreFPR(destreg,%s,Negate(Sub(Multiply(ValueFPR(fs,%s),ValueFPR(ft,%s),%s),ValueFPR(fr,%s),%s),%s));\n",
|
|
type, type, type, type, type, type, type);
|
|
else
|
|
printf (" StoreFPR(destreg,%s,Sub(Multiply(ValueFPR(fs,%s),ValueFPR(ft,%s),%s),ValueFPR(fr,%s),%s));\n",
|
|
type, type, type, type, type, type);
|
|
} else {
|
|
printf(" if ((format != fmt_single) && (format != fmt_double))\n");
|
|
printf(" SignalException(ReservedInstruction,instruction);\n");
|
|
printf(" else\n");
|
|
printf(" StoreFPR(destreg,format,Sub(ValueFPR(fs,format),ValueFPR(ft,format),format));\n");
|
|
}
|
|
break ;
|
|
|
|
case FPADD:
|
|
if (insn->flags & MULTIPLY) {
|
|
char *type = "";
|
|
switch (GETDATASIZEINSN(insn)) {
|
|
case SINGLE:
|
|
type = "fmt_single";
|
|
break;
|
|
case DOUBLE:
|
|
type = "fmt_double";
|
|
break;
|
|
default:
|
|
fprintf(stderr,"Error: Invalid data size %d for FPADD operation in instruction table\n",GETDATASIZEINSN(insn));
|
|
exit(1);
|
|
}
|
|
if (insn->flags & NOT)
|
|
printf (" StoreFPR(destreg,%s,Negate(Add(Multiply(ValueFPR(fs,%s),ValueFPR(ft,%s),%s),ValueFPR(fr,%s),%s),%s));\n",
|
|
type, type, type, type, type, type, type);
|
|
else
|
|
printf (" StoreFPR(destreg,%s,Add(Multiply(ValueFPR(fs,%s),ValueFPR(ft,%s),%s),ValueFPR(fr,%s),%s));\n",
|
|
type, type, type, type, type, type);
|
|
} else {
|
|
printf(" if ((format != fmt_single) && (format != fmt_double))\n");
|
|
printf(" SignalException(ReservedInstruction,instruction);\n");
|
|
printf(" else\n");
|
|
printf(" StoreFPR(destreg,format,Add(ValueFPR(fs,format),ValueFPR(ft,format),format));\n");
|
|
}
|
|
break ;
|
|
|
|
case FPCOMPARE:
|
|
/* For the MIPS I,II or III there *MUST* be at least one
|
|
instruction between the compare that sets a condition code
|
|
and the branch that tests it. NOTE: However the hardware
|
|
does not detect this condition. */
|
|
/* Explicitly limit the operation to S and D formats: */
|
|
printf(" if ((format != fmt_single) && (format != fmt_double))\n");
|
|
printf(" SignalException(ReservedInstruction,instruction);\n") ;
|
|
printf(" else {\n");
|
|
if (doisa < 4) {
|
|
printf(" if (condition_code != 0)\n");
|
|
printf(" SignalException(ReservedInstruction,instruction);\n") ;
|
|
printf(" else\n");
|
|
}
|
|
printf(" {\n");
|
|
printf(" int ignore = 0;\n");
|
|
printf(" int less = 0;\n");
|
|
printf(" int equal = 0;\n");
|
|
printf(" int unordered = 1;\n");
|
|
printf(" uword64 ofs = ValueFPR(fs,format);\n");
|
|
printf(" uword64 oft = ValueFPR(ft,format);\n");
|
|
printf(" if (NaN(ofs,format) || NaN(oft,format)) {\n");
|
|
printf(" if (FCSR & FP_ENABLE(IO)) {\n");
|
|
printf(" FCSR |= FP_CAUSE(IO);\n");
|
|
printf(" SignalExceptionFPE ();\n");
|
|
printf(" ignore = 1;\n");
|
|
printf(" }\n");
|
|
printf(" } else {\n");
|
|
printf(" less = Less(ofs,oft,format);\n");
|
|
printf(" equal = Equal(ofs,oft,format);\n");
|
|
printf(" unordered = 0;\n");
|
|
printf(" }\n");
|
|
printf(" if (!ignore) {\n");
|
|
printf(" int condition = (((cmpflags & (1 << 2)) && less) || ((cmpflags & (1 << 1)) && equal) || ((cmpflags & (1 << 0)) && unordered));\n");
|
|
printf(" SETFCC(condition_code,condition);\n");
|
|
printf(" }\n");
|
|
printf(" }\n");
|
|
printf(" }\n");
|
|
break ;
|
|
|
|
case MADD:
|
|
{
|
|
char* pipeline = (insn->flags & PIPE1) ? "1" : "";
|
|
int notsigned = (insn->flags & UNSIGNED);
|
|
char* prodtype = notsigned ? "uword64" : "word64";
|
|
|
|
printf("%s prod = (%s)WORD64(WORD64LO(HI%s),WORD64LO(LO%s)) + ((%s)%s(op1%s) * (%s)%s(op2%s));\n",
|
|
prodtype, prodtype, pipeline, pipeline,
|
|
prodtype, (notsigned ? "WORD64LO" : "SIGNEXTEND"), (notsigned ? "" : ",32"),
|
|
prodtype, (notsigned ? "WORD64LO" : "SIGNEXTEND"), (notsigned ? "" : ",32")
|
|
);
|
|
printf("LO%s = SIGNEXTEND(prod,32);\n", pipeline );
|
|
printf("HI%s = SIGNEXTEND( WORD64HI(prod), 32);\n", pipeline );
|
|
printf("if( destreg != 0 ) GPR[destreg] = LO%s;\n", pipeline );
|
|
break;
|
|
}
|
|
|
|
/* start-sanitize-r5900 */
|
|
case MxSA:
|
|
{
|
|
if (insn->flags & TO)
|
|
printf("SA = op1;\n");
|
|
else
|
|
printf("GPR[destreg] = SA;\n");
|
|
break;
|
|
}
|
|
|
|
case MTSAB:
|
|
printf("SA = ((op1 & 0xF) ^ (op2 & 0xF)) * 8;\n");
|
|
break;
|
|
|
|
case MTSAH:
|
|
printf("SA = ((op1 & 0x7) ^ (op2 & 0x7)) * 16;\n");
|
|
break;
|
|
|
|
case QFSRV:
|
|
printf("int bytes = (SA / 8) %% 16;\n"); /* mod 16 to avoid garbage */
|
|
printf("if (SA %% 8)\n");
|
|
printf(" SignalException(ReservedInstruction,instruction);\n");
|
|
printf("else\n");
|
|
printf(" {\n");
|
|
printf(" int i;\n");
|
|
printf(" for(i=0;i<(16-bytes);i++)\n");
|
|
printf(" GPR_SB(destreg,i) = RT_SB(bytes+i);\n");
|
|
printf(" for(;i<16;i++)\n");
|
|
printf(" GPR_SB(destreg,i) = RS_SB(i-(16-bytes));\n");
|
|
printf(" }\n");
|
|
break;
|
|
|
|
case PADD:
|
|
{
|
|
char* op = (insn->flags & SUBTRACT) ? "-" : "+";
|
|
char* name = name_for_data_len( insn );
|
|
char* letter = letter_for_data_len( insn );
|
|
|
|
char* tmptype;
|
|
char* maximum;
|
|
char* maxsat;
|
|
char* minimum;
|
|
char* signletter;
|
|
|
|
if ( insn->flags & UNSIGNED )
|
|
{
|
|
tmptype = type_for_data_len( insn, 0/*unsigned*/ );
|
|
signletter = "U";
|
|
maximum = umax_for_data_len( insn );
|
|
maxsat = (insn->flags & SUBTRACT) ? "0" : maximum;
|
|
minimum = 0;
|
|
}
|
|
else if ( insn->flags & SATURATE )
|
|
{
|
|
tmptype = type_for_data_len( insn, 1/*signed*/ );
|
|
signletter = "S";
|
|
maximum = max_for_data_len( insn );
|
|
maxsat = maximum;
|
|
minimum = min_for_data_len( insn );
|
|
}
|
|
else
|
|
{
|
|
tmptype = type_for_data_len( insn, 1/*signed*/ );
|
|
signletter = "S";
|
|
maximum = 0;
|
|
maxsat = 0;
|
|
minimum = 0;
|
|
}
|
|
|
|
printf(" int i;\n");
|
|
printf(" for (i=0; i < %sS_IN_MMI_REGS; i++)\n", name );
|
|
printf(" {\n");
|
|
printf(" %s s = RS_%s%s(i);\n", tmptype, signletter, letter);
|
|
printf(" %s t = RT_%s%s(i);\n", tmptype, signletter, letter);
|
|
printf(" %s r = s %s t;\n", tmptype, op);
|
|
if ( maximum )
|
|
{
|
|
printf(" if (r > %s)\n", maximum);
|
|
printf(" GPR_%s%s(destreg,i) = %s;\n", signletter, letter, maxsat );
|
|
if ( minimum )
|
|
{
|
|
printf(" else if (r < %s)\n", minimum);
|
|
printf(" GPR_%s%s(destreg,i) = %s;\n", signletter, letter, minimum );
|
|
}
|
|
printf(" else\n");
|
|
printf(" ");
|
|
}
|
|
printf(" GPR_%s%s(destreg,i) = r;\n", signletter, letter );
|
|
printf(" }\n");
|
|
break;
|
|
}
|
|
|
|
case PMULTH:
|
|
{
|
|
char* op;
|
|
if ( insn->flags & SUBTRACT )
|
|
op = "-";
|
|
else if ( insn->flags & ADDITION )
|
|
op = "+";
|
|
else
|
|
op = "";
|
|
|
|
printf("GPR_SW(destreg,0) = LO_SW(0) %s= (RS_SH(0) * RT_SH(0));\n", op);
|
|
printf(" LO_SW(1) %s= (RS_SH(1) * RT_SH(1));\n", op);
|
|
printf("GPR_SW(destreg,1) = HI_SW(0) %s= (RS_SH(2) * RT_SH(2));\n", op);
|
|
printf(" HI_SW(1) %s= (RS_SH(3) * RT_SH(3));\n", op);
|
|
printf("GPR_SW(destreg,2) = LO_SW(2) %s= (RS_SH(4) * RT_SH(4));\n", op);
|
|
printf(" LO_SW(3) %s= (RS_SH(5) * RT_SH(5));\n", op);
|
|
printf("GPR_SW(destreg,3) = HI_SW(2) %s= (RS_SH(6) * RT_SH(6));\n", op);
|
|
printf(" HI_SW(3) %s= (RS_SH(7) * RT_SH(7));\n", op);
|
|
break;
|
|
}
|
|
|
|
case PMULTW:
|
|
{
|
|
char* op;
|
|
char* sign = (insn->flags & UNSIGNED) ? "U" : "S";
|
|
char* prodtype = (insn->flags & UNSIGNED) ? "unsigned64" : "signed64";
|
|
char* constructor = (insn->flags & UNSIGNED) ? "UWORD64" : "WORD64";
|
|
|
|
if ( insn->flags & SUBTRACT )
|
|
{
|
|
op = "-";
|
|
printf(" %s sum0 = %s( HI_SW(0), LO_SW(0) );\n", prodtype, constructor );
|
|
printf(" %s sum1 = %s( HI_SW(2), LO_SW(2) );\n", prodtype, constructor );
|
|
}
|
|
else if ( insn->flags & ADDITION )
|
|
{
|
|
op = "+";
|
|
printf(" %s sum0 = %s( HI_SW(0), LO_SW(0) );\n", prodtype, constructor );
|
|
printf(" %s sum1 = %s( HI_SW(2), LO_SW(2) );\n", prodtype, constructor );
|
|
}
|
|
else
|
|
{
|
|
op = "";
|
|
printf(" %s sum0 = 0;\n", prodtype );
|
|
printf(" %s sum1 = 0;\n", prodtype );
|
|
}
|
|
|
|
printf(" %s prod0 = (%s)RS_%sW(0) * (%s)RT_%sW(0);\n", prodtype, prodtype, sign, prodtype, sign );
|
|
printf(" %s prod1 = (%s)RS_%sW(2) * (%s)RT_%sW(2);\n", prodtype, prodtype, sign, prodtype, sign );
|
|
|
|
printf(" sum0 %s= prod0;\n", op );
|
|
printf(" sum1 %s= prod1;\n", op );
|
|
|
|
printf(" GPR_%sD(destreg,0) = sum0;\n", sign );
|
|
printf(" GPR_%sD(destreg,1) = sum1;\n", sign );
|
|
|
|
printf(" LO = SIGNEXTEND( sum0, 32 );\n");
|
|
printf(" HI = SIGNEXTEND( WORD64HI(sum0), 32 );\n");
|
|
printf(" LO1 = SIGNEXTEND( sum1, 32 );\n");
|
|
printf(" HI1 = SIGNEXTEND( WORD64HI(sum1), 32 );\n");
|
|
break;
|
|
}
|
|
|
|
case PDIVW:
|
|
{
|
|
char* sign = (insn->flags & UNSIGNED) ? "U" : "S";
|
|
int i;
|
|
for (i = 0; i < 2; i ++)
|
|
{
|
|
char hi = (i == 0 ? ' ' : '1');
|
|
int d = i * 2;
|
|
if (! (insn->flags & UNSIGNED))
|
|
{
|
|
printf("if (RT_SW(%d) == -1)\n", d );
|
|
printf(" {\n");
|
|
printf(" LO%c = -RS_%sW(%d);\n", hi, sign, d );
|
|
printf(" HI%c = 0;\n", hi );
|
|
printf(" }\nelse ");
|
|
};
|
|
printf("if (RT_UW(%d) != 0)\n", d );
|
|
printf(" {\n");
|
|
printf(" LO%c = (signed32)(RS_%sW(%d) / RT_%sW(%d));\n", hi, sign, d, sign, d );
|
|
printf(" HI%c = (signed32)(RS_%sW(%d) %% RT_%sW(%d));\n", hi, sign, d, sign, d );
|
|
printf(" }\n");
|
|
}
|
|
break;
|
|
}
|
|
|
|
case PDIVBW:
|
|
printf("signed32 devisor = RT_SH(0);\n");
|
|
printf("if (devisor == -1)\n");
|
|
printf(" {\n");
|
|
printf(" LO_SW(0) = -RS_SW(0);\n");
|
|
printf(" HI_SW(0) = 0;\n");
|
|
printf(" LO_SW(1) = -RS_SW(1);\n");
|
|
printf(" HI_SW(1) = 0;\n");
|
|
printf(" LO_SW(2) = -RS_SW(2);\n");
|
|
printf(" HI_SW(2) = 0;\n");
|
|
printf(" LO_SW(3) = -RS_SW(3);\n");
|
|
printf(" HI_SW(3) = 0;\n");
|
|
printf(" }\n");
|
|
printf("else if (devisor != 0)\n");
|
|
printf(" {\n");
|
|
printf(" LO_SW(0) = RS_SW(0) / devisor;\n");
|
|
printf(" HI_SW(0) = SIGNEXTEND( (RS_SW(0) %% devisor), 16 );\n");
|
|
printf(" LO_SW(1) = RS_SW(1) / devisor;\n");
|
|
printf(" HI_SW(1) = SIGNEXTEND( (RS_SW(1) %% devisor), 16 );\n");
|
|
printf(" LO_SW(2) = RS_SW(2) / devisor;\n");
|
|
printf(" HI_SW(2) = SIGNEXTEND( (RS_SW(2) %% devisor), 16 );\n");
|
|
printf(" LO_SW(3) = RS_SW(3) / devisor;\n");
|
|
printf(" HI_SW(3) = SIGNEXTEND( (RS_SW(3) %% devisor), 16 );\n");
|
|
printf(" }\n");
|
|
break;
|
|
|
|
case PADSBH:
|
|
printf("int i;\n");
|
|
printf("for(i=0;i<HALFWORDS_IN_MMI_REGS/2;i++)\n");
|
|
printf(" GPR_SH(destreg,i) = RS_SH(i) - RT_SH(i);\n");
|
|
printf("for(;i<HALFWORDS_IN_MMI_REGS;i++)\n");
|
|
printf(" GPR_SH(destreg,i) = RS_SH(i) + RT_SH(i);\n");
|
|
break;
|
|
|
|
case PHMADDH:
|
|
{
|
|
char* op = (insn->flags & SUBTRACT) ? "-" : "+";
|
|
printf("GPR_SW(destreg,0) = LO_SW(0) = (RS_SH(1) * RT_SH(1)) %s (RS_SH(0) * RT_SH(0));\n", op );
|
|
printf("GPR_SW(destreg,1) = HI_SW(0) = (RS_SH(3) * RT_SH(3)) %s (RS_SH(2) * RT_SH(2));\n", op );
|
|
printf("GPR_SW(destreg,2) = LO_SW(2) = (RS_SH(5) * RT_SH(5)) %s (RS_SH(4) * RT_SH(4));\n", op );
|
|
printf("GPR_SW(destreg,3) = HI_SW(2) = (RS_SH(7) * RT_SH(7)) %s (RS_SH(6) * RT_SH(6));\n", op );
|
|
}
|
|
break;
|
|
|
|
case PSHIFT:
|
|
{
|
|
char* name = name_for_data_len( insn );
|
|
char* letter = letter_for_data_len( insn );
|
|
char* bits = bits_for_data_len( insn );
|
|
char* shift = (insn->flags & RIGHT) ? ">>" : "<<";
|
|
char* sign = (insn->flags & ARITHMETIC) ? "S" : "U";
|
|
|
|
printf("int shift_by = op1 & (%s-1);\n", bits );
|
|
printf("int i;\n");
|
|
printf("for(i=0;i<%sS_IN_MMI_REGS;i++)\n", name );
|
|
printf(" GPR_%s%s(destreg,i) = ", sign, letter );
|
|
if ( insn->flags & ARITHMETIC )
|
|
printf("SIGNEXTEND( ");
|
|
printf("(RT_%s%s(i) %s shift_by)", sign, letter, shift );
|
|
if ( insn->flags & ARITHMETIC )
|
|
printf(", (%s-shift_by) )", bits );
|
|
printf(";\n");
|
|
break;
|
|
}
|
|
|
|
case PSLLVW:
|
|
printf("int s0 = (RS_UB(0) & 0x1F);\n");
|
|
printf("int s1 = (RS_UB(8) & 0x1F);\n");
|
|
printf("signed32 temp0 = RT_UW(0) << s0;\n");
|
|
printf("signed32 temp1 = RT_UW(2) << s1;\n");
|
|
printf("GPR_SD(destreg,0) = (signed64)temp0;\n");
|
|
printf("GPR_SD(destreg,1) = (signed64)temp1;\n");
|
|
break;
|
|
|
|
case PSRLVW:
|
|
printf("GPR_UD(destreg,0) = SIGNEXTEND ( RT_UW(0) >> (RS_UB(0) & 0x1F), 31);\n");
|
|
printf("GPR_UD(destreg,1) = SIGNEXTEND ( RT_UW(2) >> (RS_UB(8) & 0x1F), 31);\n");
|
|
break;
|
|
|
|
case PSRAVW:
|
|
printf("GPR_SD(destreg,0) = SIGNEXTEND( (RT_SW (0) >> (RS_UB(0) & 0x1F)), 32-(RS_UB(0) & 0x1F) );\n");
|
|
printf("GPR_SD(destreg,1) = SIGNEXTEND( (RT_SW (2) >> (RS_UB(8) & 0x1F)), 32-(RS_UB(8) & 0x1F) );\n");
|
|
break;
|
|
|
|
case POP:
|
|
{
|
|
char* op1;
|
|
char* op2;
|
|
|
|
if ( GET_OP_FROM_INSN(insn) == POP_AND )
|
|
{
|
|
op1 = "&";
|
|
op2 = "";
|
|
}
|
|
else if ( GET_OP_FROM_INSN(insn) == POP_OR )
|
|
{
|
|
op1 = "|";
|
|
op2 = "";
|
|
}
|
|
else if ( GET_OP_FROM_INSN(insn) == POP_NOR )
|
|
{
|
|
op1 = "|";
|
|
op2 = "~";
|
|
}
|
|
else if ( GET_OP_FROM_INSN(insn) == POP_XOR )
|
|
{
|
|
op1 = "^";
|
|
op2 = "";
|
|
}
|
|
|
|
printf("int i;\n");
|
|
printf("for(i=0;i<WORDS_IN_MMI_REGS;i++)\n");
|
|
printf(" GPR_UW(destreg,i) = %s(RS_UW(i) %s RT_UW(i));\n", op2, op1 );
|
|
break;
|
|
}
|
|
|
|
case PCMP:
|
|
{
|
|
char* name = name_for_data_len( insn );
|
|
char* letter = letter_for_data_len( insn );
|
|
char* maximum = umax_for_data_len( insn );
|
|
char* op = (insn->flags & GT) ? ">" : "==";
|
|
|
|
printf("int i;\n");
|
|
printf("for(i=0;i<%sS_IN_MMI_REGS;i++)\n", name );
|
|
printf(" {\n");
|
|
printf(" if (RS_S%s(i) %s RT_S%s(i)) GPR_S%s(destreg,i) = %s;\n",
|
|
letter, op, letter, letter, maximum );
|
|
printf(" else GPR_S%s(destreg,i) = 0;\n", letter );
|
|
printf(" }\n");
|
|
break;
|
|
}
|
|
|
|
case PMAXMIN:
|
|
{
|
|
char* name = name_for_data_len( insn );
|
|
char* letter = letter_for_data_len( insn );
|
|
char* op = (insn->flags & GT) ? ">" : "<";
|
|
|
|
printf("int i;\n");
|
|
printf("for(i=0;i<%sS_IN_MMI_REGS;i++)\n", name );
|
|
printf(" {\n");
|
|
printf(" if (RS_S%s(i) %s RT_S%s(i)) GPR_S%s(destreg,i) = RS_S%s(i);\n",
|
|
letter, op, letter, letter, letter );
|
|
printf(" else GPR_S%s(destreg,i) = RT_S%s(i);\n", letter, letter );
|
|
printf(" }\n");
|
|
break;
|
|
}
|
|
|
|
case PABS:
|
|
{
|
|
char* name = name_for_data_len( insn );
|
|
char* letter = letter_for_data_len( insn );
|
|
char* min = min_for_data_len( insn );
|
|
char* max = max_for_data_len( insn );
|
|
|
|
printf("int i;\n");
|
|
printf("for(i=0;i<%sS_IN_MMI_REGS;i++)\n", name );
|
|
printf(" {\n");
|
|
printf(" if (RT_S%s(i) >= 0)\n", letter );
|
|
printf(" GPR_S%s(destreg,i) = RT_S%s(i);\n", letter, letter );
|
|
printf(" else if (RT_S%s(i) == %s)\n", letter, min );
|
|
printf(" GPR_S%s(destreg,i) = %s;\n", letter, max );
|
|
printf(" else\n");
|
|
printf(" GPR_S%s(destreg,i) = -RT_S%s(i);\n", letter, letter );
|
|
printf(" }\n");
|
|
break;
|
|
}
|
|
|
|
case PCPYH:
|
|
printf("GPR_UH(destreg,7) = GPR_UH(destreg,6) = GPR_UH(destreg,5) = GPR_UH(destreg,4) = RT_UH(4);\n");
|
|
printf("GPR_UH(destreg,3) = GPR_UH(destreg,2) = GPR_UH(destreg,1) = GPR_UH(destreg,0) = RT_UH(0);\n");
|
|
break;
|
|
|
|
case PCPYLD:
|
|
printf("GPR_UD(destreg,0) = RT_UD(0);\n");
|
|
printf("GPR_UD(destreg,1) = RS_UD(0);\n");
|
|
break;
|
|
|
|
case PCPYUD:
|
|
printf("GPR_UD(destreg,0) = RS_UD(1);\n");
|
|
printf("GPR_UD(destreg,1) = RT_UD(1);\n");
|
|
break;
|
|
|
|
case PEXCH:
|
|
printf("GPR_UH(destreg,0) = RT_UH(0);\n");
|
|
printf("GPR_UH(destreg,1) = RT_UH(2);\n");
|
|
printf("GPR_UH(destreg,2) = RT_UH(1);\n");
|
|
printf("GPR_UH(destreg,3) = RT_UH(3);\n");
|
|
printf("GPR_UH(destreg,4) = RT_UH(4);\n");
|
|
printf("GPR_UH(destreg,5) = RT_UH(6);\n");
|
|
printf("GPR_UH(destreg,6) = RT_UH(5);\n");
|
|
printf("GPR_UH(destreg,7) = RT_UH(7);\n");
|
|
break;
|
|
|
|
case PEXCW:
|
|
printf("GPR_UW(destreg,0) = RT_UW(0);\n");
|
|
printf("GPR_UW(destreg,1) = RT_UW(2);\n");
|
|
printf("GPR_UW(destreg,2) = RT_UW(1);\n");
|
|
printf("GPR_UW(destreg,3) = RT_UW(3);\n");
|
|
break;
|
|
|
|
case PEXOH:
|
|
printf("GPR_UH(destreg,0) = RT_UH(2);\n");
|
|
printf("GPR_UH(destreg,1) = RT_UH(1);\n");
|
|
printf("GPR_UH(destreg,2) = RT_UH(0);\n");
|
|
printf("GPR_UH(destreg,3) = RT_UH(3);\n");
|
|
printf("GPR_UH(destreg,4) = RT_UH(6);\n");
|
|
printf("GPR_UH(destreg,5) = RT_UH(5);\n");
|
|
printf("GPR_UH(destreg,6) = RT_UH(4);\n");
|
|
printf("GPR_UH(destreg,7) = RT_UH(7);\n");
|
|
break;
|
|
|
|
case PEXOW:
|
|
printf("GPR_UW(destreg,0) = RT_UW(2);\n");
|
|
printf("GPR_UW(destreg,1) = RT_UW(1);\n");
|
|
printf("GPR_UW(destreg,2) = RT_UW(0);\n");
|
|
printf("GPR_UW(destreg,3) = RT_UW(3);\n");
|
|
break;
|
|
|
|
case PEXTLB:
|
|
printf("GPR_UB(destreg,0) = RT_UB(0);\n");
|
|
printf("GPR_UB(destreg,1) = RS_UB(0);\n");
|
|
printf("GPR_UB(destreg,2) = RT_UB(1);\n");
|
|
printf("GPR_UB(destreg,3) = RS_UB(1);\n");
|
|
printf("GPR_UB(destreg,4) = RT_UB(2);\n");
|
|
printf("GPR_UB(destreg,5) = RS_UB(2);\n");
|
|
printf("GPR_UB(destreg,6) = RT_UB(3);\n");
|
|
printf("GPR_UB(destreg,7) = RS_UB(3);\n");
|
|
printf("GPR_UB(destreg,8) = RT_UB(4);\n");
|
|
printf("GPR_UB(destreg,9) = RS_UB(4);\n");
|
|
printf("GPR_UB(destreg,10) = RT_UB(5);\n");
|
|
printf("GPR_UB(destreg,11) = RS_UB(5);\n");
|
|
printf("GPR_UB(destreg,12) = RT_UB(6);\n");
|
|
printf("GPR_UB(destreg,13) = RS_UB(6);\n");
|
|
printf("GPR_UB(destreg,14) = RT_UB(7);\n");
|
|
printf("GPR_UB(destreg,15) = RS_UB(7);\n");
|
|
break;
|
|
|
|
case PEXTLH:
|
|
printf("GPR_UH(destreg,0) = RT_UH(0);\n");
|
|
printf("GPR_UH(destreg,1) = RS_UH(0);\n");
|
|
printf("GPR_UH(destreg,2) = RT_UH(1);\n");
|
|
printf("GPR_UH(destreg,3) = RS_UH(1);\n");
|
|
printf("GPR_UH(destreg,4) = RT_UH(2);\n");
|
|
printf("GPR_UH(destreg,5) = RS_UH(2);\n");
|
|
printf("GPR_UH(destreg,6) = RT_UH(3);\n");
|
|
printf("GPR_UH(destreg,7) = RS_UH(3);\n");
|
|
break;
|
|
|
|
case PEXTLW:
|
|
printf("GPR_UW(destreg,0) = RT_UW(0);\n");
|
|
printf("GPR_UW(destreg,1) = RS_UW(0);\n");
|
|
printf("GPR_UW(destreg,2) = RT_UW(1);\n");
|
|
printf("GPR_UW(destreg,3) = RS_UW(1);\n");
|
|
break;
|
|
|
|
case PEXTUB:
|
|
printf("GPR_UB(destreg,0) = RT_UB(8);\n");
|
|
printf("GPR_UB(destreg,1) = RS_UB(8);\n");
|
|
printf("GPR_UB(destreg,2) = RT_UB(9);\n");
|
|
printf("GPR_UB(destreg,3) = RS_UB(9);\n");
|
|
printf("GPR_UB(destreg,4) = RT_UB(10);\n");
|
|
printf("GPR_UB(destreg,5) = RS_UB(10);\n");
|
|
printf("GPR_UB(destreg,6) = RT_UB(11);\n");
|
|
printf("GPR_UB(destreg,7) = RS_UB(11);\n");
|
|
printf("GPR_UB(destreg,8) = RT_UB(12);\n");
|
|
printf("GPR_UB(destreg,9) = RS_UB(12);\n");
|
|
printf("GPR_UB(destreg,10) = RT_UB(13);\n");
|
|
printf("GPR_UB(destreg,11) = RS_UB(13);\n");
|
|
printf("GPR_UB(destreg,12) = RT_UB(14);\n");
|
|
printf("GPR_UB(destreg,13) = RS_UB(14);\n");
|
|
printf("GPR_UB(destreg,14) = RT_UB(15);\n");
|
|
printf("GPR_UB(destreg,15) = RS_UB(15);\n");
|
|
break;
|
|
|
|
case PEXTUH:
|
|
printf("GPR_UH(destreg,0) = RT_UH(4);\n");
|
|
printf("GPR_UH(destreg,1) = RS_UH(4);\n");
|
|
printf("GPR_UH(destreg,2) = RT_UH(5);\n");
|
|
printf("GPR_UH(destreg,3) = RS_UH(5);\n");
|
|
printf("GPR_UH(destreg,4) = RT_UH(6);\n");
|
|
printf("GPR_UH(destreg,5) = RS_UH(6);\n");
|
|
printf("GPR_UH(destreg,6) = RT_UH(7);\n");
|
|
printf("GPR_UH(destreg,7) = RS_UH(7);\n");
|
|
break;
|
|
|
|
case PEXTUW:
|
|
printf("GPR_UW(destreg,0) = RT_UW(2);\n");
|
|
printf("GPR_UW(destreg,1) = RS_UW(2);\n");
|
|
printf("GPR_UW(destreg,2) = RT_UW(3);\n");
|
|
printf("GPR_UW(destreg,3) = RS_UW(3);\n");
|
|
break;
|
|
|
|
case PPACB:
|
|
printf("GPR_UB(destreg,0) = RT_UB(0);\n");
|
|
printf("GPR_UB(destreg,1) = RT_UB(2);\n");
|
|
printf("GPR_UB(destreg,2) = RT_UB(4);\n");
|
|
printf("GPR_UB(destreg,3) = RT_UB(6);\n");
|
|
printf("GPR_UB(destreg,4) = RT_UB(8);\n");
|
|
printf("GPR_UB(destreg,5) = RT_UB(10);\n");
|
|
printf("GPR_UB(destreg,6) = RT_UB(12);\n");
|
|
printf("GPR_UB(destreg,7) = RT_UB(14);\n");
|
|
printf("GPR_UB(destreg,8) = RS_UB(0);\n");
|
|
printf("GPR_UB(destreg,9) = RS_UB(2);\n");
|
|
printf("GPR_UB(destreg,10) = RS_UB(4);\n");
|
|
printf("GPR_UB(destreg,11) = RS_UB(6);\n");
|
|
printf("GPR_UB(destreg,12) = RS_UB(8);\n");
|
|
printf("GPR_UB(destreg,13) = RS_UB(10);\n");
|
|
printf("GPR_UB(destreg,14) = RS_UB(12);\n");
|
|
printf("GPR_UB(destreg,15) = RS_UB(14);\n");
|
|
break;
|
|
|
|
case PPACH:
|
|
printf("GPR_UH(destreg,0) = RT_UH(0);\n");
|
|
printf("GPR_UH(destreg,1) = RT_UH(2);\n");
|
|
printf("GPR_UH(destreg,2) = RT_UH(4);\n");
|
|
printf("GPR_UH(destreg,3) = RT_UH(6);\n");
|
|
printf("GPR_UH(destreg,4) = RS_UH(0);\n");
|
|
printf("GPR_UH(destreg,5) = RS_UH(2);\n");
|
|
printf("GPR_UH(destreg,6) = RS_UH(4);\n");
|
|
printf("GPR_UH(destreg,7) = RS_UH(6);\n");
|
|
break;
|
|
|
|
case PPACW:
|
|
printf("GPR_UW(destreg,0) = RT_UW(0);\n");
|
|
printf("GPR_UW(destreg,1) = RT_UW(2);\n");
|
|
printf("GPR_UW(destreg,2) = RS_UW(0);\n");
|
|
printf("GPR_UW(destreg,3) = RS_UW(2);\n");
|
|
break;
|
|
|
|
case PREVH:
|
|
printf("GPR_UH(destreg,0) = RT_UH(3);\n");
|
|
printf("GPR_UH(destreg,1) = RT_UH(2);\n");
|
|
printf("GPR_UH(destreg,2) = RT_UH(1);\n");
|
|
printf("GPR_UH(destreg,3) = RT_UH(0);\n");
|
|
printf("GPR_UH(destreg,4) = RT_UH(7);\n");
|
|
printf("GPR_UH(destreg,5) = RT_UH(6);\n");
|
|
printf("GPR_UH(destreg,6) = RT_UH(5);\n");
|
|
printf("GPR_UH(destreg,7) = RT_UH(4);\n");
|
|
break;
|
|
|
|
case PROT3W:
|
|
printf("GPR_UW(destreg,0) = RT_UW(0);\n");
|
|
printf("GPR_UW(destreg,1) = RT_UW(3);\n");
|
|
printf("GPR_UW(destreg,2) = RT_UW(1);\n");
|
|
printf("GPR_UW(destreg,3) = RT_UW(2);\n");
|
|
break;
|
|
|
|
case PINTH:
|
|
printf("GPR_UH(destreg,0) = RT_UH(0);\n");
|
|
printf("GPR_UH(destreg,1) = RS_UH(4);\n");
|
|
printf("GPR_UH(destreg,2) = RT_UH(1);\n");
|
|
printf("GPR_UH(destreg,3) = RS_UH(5);\n");
|
|
printf("GPR_UH(destreg,4) = RT_UH(2);\n");
|
|
printf("GPR_UH(destreg,5) = RS_UH(6);\n");
|
|
printf("GPR_UH(destreg,6) = RT_UH(3);\n");
|
|
printf("GPR_UH(destreg,7) = RS_UH(7);\n");
|
|
break;
|
|
|
|
case PINTOH:
|
|
printf("GPR_UH(destreg,0) = RT_UH(0);\n");
|
|
printf("GPR_UH(destreg,1) = RS_UH(0);\n");
|
|
printf("GPR_UH(destreg,2) = RT_UH(2);\n");
|
|
printf("GPR_UH(destreg,3) = RS_UH(2);\n");
|
|
printf("GPR_UH(destreg,4) = RT_UH(4);\n");
|
|
printf("GPR_UH(destreg,5) = RS_UH(4);\n");
|
|
printf("GPR_UH(destreg,6) = RT_UH(6);\n");
|
|
printf("GPR_UH(destreg,7) = RS_UH(6);\n");
|
|
break;
|
|
|
|
case PMXX: /* Parallel move HI or LO / TO or FROM */
|
|
{
|
|
if ( (insn->flags & (HI|FROM)) == (HI|FROM) )
|
|
{
|
|
printf("GPR_SD(destreg,0) = HI;\n");
|
|
printf("GPR_SD(destreg,1) = HI1;\n");
|
|
}
|
|
else if ( (insn->flags & (LO|FROM)) == (LO|FROM) )
|
|
{
|
|
printf("GPR_SD(destreg,0) = LO;\n");
|
|
printf("GPR_SD(destreg,1) = LO1;\n");
|
|
}
|
|
else if ( (insn->flags & (HI|TO)) == (HI|TO) )
|
|
{
|
|
printf("HI = RS_SD(0);\n");
|
|
printf("HI1 = RS_SD(1);\n");
|
|
}
|
|
else if ( (insn->flags & (LO|TO)) == (LO|TO) )
|
|
{
|
|
printf("LO = RS_SD(0);\n");
|
|
printf("LO1 = RS_SD(1);\n");
|
|
}
|
|
break;
|
|
}
|
|
|
|
case PMTHL:
|
|
printf("LO_UW(0) = RS_UW(0);\n");
|
|
printf("HI_UW(0) = RS_UW(1);\n");
|
|
printf("LO_UW(2) = RS_UW(2);\n");
|
|
printf("HI_UW(2) = RS_UW(3);\n");
|
|
break;
|
|
|
|
case PMFHL:
|
|
printf("if (op1 == 0)\n");
|
|
printf(" {\n");
|
|
printf(" GPR_UW(destreg,0) = LO_UW(0);\n");
|
|
printf(" GPR_UW(destreg,1) = HI_UW(0);\n");
|
|
printf(" GPR_UW(destreg,2) = LO_UW(2);\n");
|
|
printf(" GPR_UW(destreg,3) = HI_UW(2);\n");
|
|
printf(" }\n");
|
|
printf("else if (op1 == 1)\n");
|
|
printf(" {\n");
|
|
printf(" GPR_UW(destreg,0) = LO_UW(1);\n");
|
|
printf(" GPR_UW(destreg,1) = HI_UW(1);\n");
|
|
printf(" GPR_UW(destreg,2) = LO_UW(3);\n");
|
|
printf(" GPR_UW(destreg,3) = HI_UW(3);\n");
|
|
printf(" }\n");
|
|
printf("else if (op1 == 2)\n");
|
|
printf(" {\n");
|
|
printf(" /* NOTE: This code implements a saturate according to the\n");
|
|
printf(" figure on page B-115 and not according to the\n");
|
|
printf(" definition on page B-113 */\n");
|
|
printf(" signed64 t = ((unsigned64)HI_UW(0) << 32) | (unsigned64)LO_UW(0);\n");
|
|
printf(" signed64 u = ((unsigned64)HI_UW(2) << 32) | (unsigned64)LO_UW(2);\n");
|
|
printf(" if ( t > SIGNED64 (0x000000007FFFFFFF) )\n");
|
|
printf(" GPR_SD(destreg,0) = SIGNED64 (0x000000007FFFFFFF);\n");
|
|
printf(" else if ( t < - SIGNED64 (0x0000000080000000) )\n");
|
|
printf(" GPR_SD(destreg,0) = - SIGNED64 (0x0000000080000000);\n");
|
|
printf(" else\n");
|
|
printf(" GPR_SD(destreg,0) = t;\n");
|
|
printf(" if ( u > SIGNED64 (0x000000007FFFFFFF) )\n");
|
|
printf(" GPR_SD(destreg,1) = SIGNED64 (0x000000007FFFFFFF);\n");
|
|
printf(" else if ( u < - SIGNED64 (0x0000000080000000) )\n");
|
|
printf(" GPR_SD(destreg,1) = - SIGNED64 (0x0000000080000000);\n");
|
|
printf(" else\n");
|
|
printf(" GPR_SD(destreg,1) = u;\n");
|
|
printf(" }\n");
|
|
printf("else if (op1 == 3)\n");
|
|
printf(" {\n");
|
|
printf(" GPR_UH(destreg,0) = LO_UH(0);\n");
|
|
printf(" GPR_UH(destreg,1) = LO_UH(2);\n");
|
|
printf(" GPR_UH(destreg,2) = HI_UH(0);\n");
|
|
printf(" GPR_UH(destreg,3) = HI_UH(2);\n");
|
|
printf(" GPR_UH(destreg,4) = LO_UH(4);\n");
|
|
printf(" GPR_UH(destreg,5) = LO_UH(6);\n");
|
|
printf(" GPR_UH(destreg,6) = HI_UH(4);\n");
|
|
printf(" GPR_UH(destreg,7) = HI_UH(6);\n");
|
|
printf(" }\n");
|
|
printf("else if (op1 == 4)\n");
|
|
printf(" {\n");
|
|
printf(" if (LO_SW(0) > 0x7FFF)\n");
|
|
printf(" GPR_UH(destreg,0) = 0x7FFF;\n");
|
|
printf(" else if (LO_SW(0) < -0x8000)\n");
|
|
printf(" GPR_UH(destreg,0) = 0x8000;\n");
|
|
printf(" else\n");
|
|
printf(" GPR_UH(destreg,0) = LO_UH(0);\n");
|
|
|
|
printf(" if (LO_SW(1) > 0x7FFF)\n");
|
|
printf(" GPR_UH(destreg,1) = 0x7FFF;\n");
|
|
printf(" else if (LO_SW(1) < -0x8000)\n");
|
|
printf(" GPR_UH(destreg,1) = 0x8000;\n");
|
|
printf(" else\n");
|
|
printf(" GPR_UH(destreg,1) = LO_UH(2);\n");
|
|
|
|
printf(" if (HI_SW(0) > 0x7FFF)\n");
|
|
printf(" GPR_UH(destreg,2) = 0x7FFF;\n");
|
|
printf(" else if (HI_SW(0) < -0x8000)\n");
|
|
printf(" GPR_UH(destreg,2) = 0x8000;\n");
|
|
printf(" else\n");
|
|
printf(" GPR_UH(destreg,2) = HI_UH(0);\n");
|
|
|
|
printf(" if (HI_SW(1) > 0x7FFF)\n");
|
|
printf(" GPR_UH(destreg,3) = 0x7FFF;\n");
|
|
printf(" else if (HI_SW(1) < -0x8000)\n");
|
|
printf(" GPR_UH(destreg,3) = 0x8000;\n");
|
|
printf(" else\n");
|
|
printf(" GPR_UH(destreg,3) = HI_UH(2);\n");
|
|
|
|
printf(" if (LO_SW(2) > 0x7FFF)\n");
|
|
printf(" GPR_UH(destreg,4) = 0x7FFF;\n");
|
|
printf(" else if (LO_SW(2) < -0x8000)\n");
|
|
printf(" GPR_UH(destreg,4) = 0x8000;\n");
|
|
printf(" else\n");
|
|
printf(" GPR_UH(destreg,4) = LO_UH(4);\n");
|
|
|
|
printf(" if (LO_SW(3) > 0x7FFF)\n");
|
|
printf(" GPR_UH(destreg,5) = 0x7FFF;\n");
|
|
printf(" else if (LO_SW(3) < -0x8000)\n");
|
|
printf(" GPR_UH(destreg,5) = 0x8000;\n");
|
|
printf(" else\n");
|
|
printf(" GPR_UH(destreg,5) = LO_UH(6);\n");
|
|
|
|
printf(" if (HI_SW(2) > 0x7FFF)\n");
|
|
printf(" GPR_UH(destreg,6) = 0x7FFF;\n");
|
|
printf(" else if (HI_SW(2) < -0x8000)\n");
|
|
printf(" GPR_UH(destreg,6) = 0x8000;\n");
|
|
printf(" else\n");
|
|
printf(" GPR_UH(destreg,6) = HI_UH(4);\n");
|
|
|
|
printf(" if (HI_SW(3) > 0x7FFF)\n");
|
|
printf(" GPR_UH(destreg,7) = 0x7FFF;\n");
|
|
printf(" else if (HI_SW(3) < -0x8000)\n");
|
|
printf(" GPR_UH(destreg,7) = 0x8000;\n");
|
|
printf(" else\n");
|
|
printf(" GPR_UH(destreg,7) = HI_UH(6);\n");
|
|
|
|
printf(" }\n");
|
|
break;
|
|
|
|
case PLZCW:
|
|
printf("unsigned long value;\n");
|
|
printf("int test;\n");
|
|
printf("int count;\n");
|
|
printf("int i;\n");
|
|
|
|
printf("value = RS_UW(0);\n");
|
|
printf("count = 0;\n");
|
|
printf("test = !!(value & (1 << 31));\n");
|
|
printf("for(i=30; i>=0 && (test == !!(value & (1 << i))); i--)\n");
|
|
printf(" count++;\n");
|
|
printf("GPR_UW(destreg,0) = count;\n");
|
|
|
|
printf("value = RS_UW(1);\n");
|
|
printf("count = 0;\n");
|
|
printf("test = !!(value & (1 << 31));\n");
|
|
printf("for(i=30; i>=0 && (test == !!(value & (1 << i))); i--)\n");
|
|
printf(" count++;\n");
|
|
printf("GPR_UW(destreg,1) = count;\n");
|
|
break;
|
|
|
|
case PEXT5:
|
|
printf("int i;\n");
|
|
printf("for(i=0;i<WORDS_IN_MMI_REGS;i++)\n");
|
|
printf(" {\n");
|
|
printf(" unsigned32 x = RT_UW(i);\n");
|
|
printf(" GPR_UW(destreg,i) = ((x & (1 << 15)) << (31 - 15)) \n");
|
|
printf(" | ((x & (31 << 10)) << (19 - 10)) \n");
|
|
printf(" | ((x & (31 << 5)) << (11 - 5)) \n");
|
|
printf(" | ((x & (31 << 0)) << (3 - 0)); \n");
|
|
printf(" }\n");
|
|
break;
|
|
|
|
case PPAC5:
|
|
printf("int i;\n");
|
|
printf("for(i=0;i<WORDS_IN_MMI_REGS;i++)\n");
|
|
printf(" {\n");
|
|
printf(" unsigned32 x = RT_UW(i);\n");
|
|
printf(" GPR_UW(destreg,i) = ((x & (1 << 31)) >> (31 - 15)) \n");
|
|
printf(" | ((x & (31 << 19)) >> (19 - 10)) \n");
|
|
printf(" | ((x & (31 << 11)) >> (11 - 5)) \n");
|
|
printf(" | ((x & (31 << 3)) >> (3 - 0)); \n");
|
|
printf(" }\n");
|
|
break;
|
|
/* end-sanitize-r5900 */
|
|
|
|
case NYI:
|
|
fprintf(stderr,"Warning: Unimplemented opcode: %s\n",insn->name) ;
|
|
|
|
printf("SignalException(ReservedInstruction,instruction);\n");
|
|
break;
|
|
|
|
default:
|
|
fprintf(stderr,"Unrecognised opcode type %d\n",insn->type) ;
|
|
exit(6) ;
|
|
}
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
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/* The command-line feature controls are presented in a similar style
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to those offered by GCC, in the aim of providing a consistent
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interface to the user. */
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typedef enum {
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T_NONE, /* no argument - mask and value fields control "feature" definition */
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T_NUM, /* numeric argument - optionally preceded by '=' - mask field defines maximum value */
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T_STRING /* string argument - optionally prcededed by '=' */
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} mactypes;
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struct {
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char *name;
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mactypes type;
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unsigned int mask;
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unsigned int value;
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char *desc;
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} machine_options[] = {
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{"ips", T_NUM, MASK_ISA,0,"\tSelect MIPS ISA version"},
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{"cpu", T_STRING,0,0,"\t\tSelect particular MIPS architecture"},
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{"gp64", T_NONE, FEATURE_GP64,FEATURE_GP64,"\t\t\tSelect 64bit GP registers"},
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{"gp32", T_NONE, FEATURE_GP64,0,"\t\t\tSelect 32bit GP registers"},
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{"no-fp", T_NONE, FEATURE_HASFPU,0,"\t\tDisable FP simulation"},
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{"single-float",T_NONE, (FEATURE_FPSINGLE | FEATURE_HASFPU),(FEATURE_FPSINGLE | FEATURE_HASFPU),"\t\tSelect single precision only FPU"},
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{"double-float",T_NONE, (FEATURE_FPSINGLE | FEATURE_HASFPU),FEATURE_HASFPU,"\t\tSelect double precision FPU"},
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{0, T_NONE, 0,0}
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};
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/* The following architecture identies are those accepted by the "-mcpu" option: */
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struct architectures {
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const char *name; /* ASCII string identifier for command-line, no white-space allowed */
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unsigned int idflag; /* or-ed into "isa" value */
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};
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static const struct architectures available_architectures[] = {
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{"4100",ARCH_VR4100}, /* NEC MIPS VR4100 */
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{"3900",ARCH_R3900}, /* Toshiba R3900 (TX39) */
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/* start-sanitize-tx49 */
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{"4900",ARCH_R4900}, /* Toshiba R4900 (TX49) */
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/* end-sanitize-tx49 */
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/* start-sanitize-tx19 */
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{"1900",ARCH_R3900}, /* Toshiba R1900 (TX19) */
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/* end-sanitize-tx19 */
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/* start-sanitize-r5900 */
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{"5900",ARCH_R5900},
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/* end-sanitize-r5900 */
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{0, 0} /* terminator */
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};
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/*---------------------------------------------------------------------------*/
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static void
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usage(name)
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char *name;
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{
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int loop;
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fprintf(stderr,"%s: Construct a MIPS simulator engine.\n",name);
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fprintf(stderr,"\
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The output of this program is a block of 'C' code designed to be\n\
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included into the main simulation control loop of a device specific\n\
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simulator.\n");
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fprintf(stderr,"\nOptions:\n");
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fprintf(stderr," -h --help\t\tProvide this help text\n");
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fprintf(stderr," -f --fast\t\tProvide the fastest possible engine (i.e. no statistics)\n");
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fprintf(stderr," -w --warnings\t\tEnable all the simulator engine warnings\n");
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for (loop = 0; (machine_options[loop].name != 0); loop++) {
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fprintf(stderr," -m%s",machine_options[loop].name);
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switch (machine_options[loop].type) {
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case T_NUM :
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fprintf(stderr,"N (range 0..%d)",machine_options[loop].mask);
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case T_NONE :
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break;
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case T_STRING :
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fprintf(stderr,"=name");
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break;
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default :
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fprintf(stderr,"%s: FATAL error: unrecognised machine option type ID %d\n",name,machine_options[loop].type);
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exit(1);
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}
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fprintf(stderr,"%s\n",machine_options[loop].desc);
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}
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fprintf(stderr,"\nAvailable \"-mcpu\" architectures: ");
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for (loop = 0; (available_architectures[loop].name != 0); loop++)
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fprintf(stderr,"%s ",available_architectures[loop].name);
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fprintf(stderr,"\n\n");
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fprintf(stderr,"\
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The \"trace\" and \"warnings\" options do not define the output stream.\n\
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They only inform the code that includes the constructed engine to provide\n\
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the required features.\n\n\
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The \"-mips0\" option forces the construction of a simulator supporting\n\
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the highest available MIPS ISA supported.\n");
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return;
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}
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/*---------------------------------------------------------------------------*/
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int
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main(argc,argv)
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int argc;
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char **argv;
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{
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int c;
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char *progname = argv[0];
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unsigned int doarch = DEF_ISA;
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unsigned int features = 0; /* default state */
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if (DEF_FP)
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features |= FEATURE_HASFPU;
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if (!DEF_PROC64)
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features |= FEATURE_PROC32;
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if (DEF_FPSINGLE)
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features |= FEATURE_FPSINGLE;
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if (features & FEATURE_PROC32)
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features &= ~FEATURE_GP64;
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else
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features |= FEATURE_GP64;
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while (1) {
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int option_index = 0;
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static struct option cmdline[] = {
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{"fast", 0,0,'f'},
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{"help", 0,0,'h'},
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{"warnings",0,0,'w'},
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{"igen", 0,0,'i'},
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{0, 0,0,0}
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};
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c = getopt_long(argc,argv,"hm:tw",cmdline,&option_index);
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if (c == -1)
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break ; /* out of the while loop */
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switch (c) {
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case 'h' : /* help */
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usage(progname);
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exit(0);
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case 'f' : /* fast */
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features |= FEATURE_FAST;
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break;
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case 'i' : /* igen formatted output */
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features |= FEATURE_IGEN;
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break;
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case 'w' : /* warnings */
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features |= FEATURE_WARNINGS;
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/* TODO: Future extension: Allow better control over the warnings generated:
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disable warnings -wnone ~FEATURE_WARNINGS
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all possible warnings -wall FEATURE_WARNINGS
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pipeline stall occuring -wstall FEATURE_WARN_STALL
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LO/HI corruption -wlo or -whi or -wlohi or -whilo FEATURE_WARN_HILO
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write to zero -wzero FEATURE_WARN_ZERO actually performed in external code - though we should set a manifest
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bad r31 use -wr31 FEATURE_WARN_R31
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undefined results -wresult FEATURE_WARN_RESULT
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*/
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break;
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case 'm' : /* machine options */
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{
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int loop;
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for (loop = 0; (machine_options[loop].name != 0); loop++)
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if (strncmp(machine_options[loop].name,optarg,strlen(machine_options[loop].name)) == 0) {
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char *loptarg = (optarg + strlen(machine_options[loop].name));
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switch (machine_options[loop].type) {
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case T_NONE :
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if (*loptarg) {
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fprintf(stderr,"%s: Spurious characters \"%s\" at end of -m%s option\n",progname,loptarg,machine_options[loop].name);
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exit(1);
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}
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features &= ~(machine_options[loop].mask);
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features |= machine_options[loop].value;
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break;
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case T_NUM :
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if (*loptarg && *loptarg == '=')
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loptarg++;
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if (strcmp(machine_options[loop].name,"ips") == 0) {
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unsigned int num;
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if (!*loptarg) {
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fprintf(stderr,"%s: ISA number expected after -mips\n",progname);
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exit(1);
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}
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num = my_strtoul(loptarg,&loptarg,10);
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if ((num == ULONG_MAX) && (errno = ERANGE)) {
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fprintf(stderr,"%s: Invalid number given to -mips option\n",progname);
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exit(1);
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}
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if (*loptarg) {
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fprintf(stderr,"%s: Spurious trailing characters after ISA number \"%s\"\n",progname,loptarg);
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exit(1);
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}
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if (num > MASK_ISA) {
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fprintf(stderr,"%s: ISA number %d outside acceptable range (0..%d)\n",progname,num,MASK_ISA);
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exit(1);
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}
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doarch = ((doarch & ~MASK_ISA) | num);
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if ((num == 0) || (num > 2)) {
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if ((features & FEATURE_PROC32) || !(features & FEATURE_GP64))
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fprintf(stderr,"%s: Warning: -mips%d forcing -mgp64\n",progname,num);
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features |= FEATURE_GP64;
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features &= ~FEATURE_PROC32;
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} else {
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if (!(features & FEATURE_PROC32) || (features & FEATURE_GP64))
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fprintf(stderr,"%s: Warning: -mips%d forcing -mgp32\n",progname,num);
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features &= ~FEATURE_GP64;
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features |= FEATURE_PROC32;
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}
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} else {
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fprintf(stderr,"%s: FATAL: Unrecognised (numeric) machine option -m%s\n",progname,optarg);
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exit(1);
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}
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break;
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case T_STRING :
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if (*loptarg && *loptarg == '=')
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loptarg++;
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if (strcmp(machine_options[loop].name,"cpu") == 0) {
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int archloop;
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if (!*loptarg) {
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fprintf(stderr,"%s: Architecture identifier expected after -mcpu\n",progname);
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exit(1);
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}
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for (archloop = 0; (available_architectures[archloop].name != 0); archloop++) {
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if ((*loptarg == 'v') || (*loptarg == 'V'))
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loptarg++;
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if ((*loptarg == 'r') || (*loptarg == 'R'))
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loptarg++;
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if (strcmp(available_architectures[archloop].name,loptarg) == 0) {
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doarch |= available_architectures[archloop].idflag;
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break;
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}
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}
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if (available_architectures[archloop].name == 0) {
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fprintf(stderr,"%s: Unrecognised MIPS architecture \"%s\"\n",progname,loptarg);
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exit(1);
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}
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} else {
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fprintf(stderr,"%s: FATAL: Unrecognised (string) machine option -m%s\n",progname,optarg);
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exit(1);
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}
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break;
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default :
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fprintf(stderr,"%s: FATAL error: unrecognised machine option type ID %d\n",progname,machine_options[loop].type);
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exit(1);
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}
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break;
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}
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if (machine_options[loop].name == 0) {
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fprintf(stderr,"%s: Unrecognised option: -m%s\n",progname,optarg);
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exit(1);
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}
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}
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break;
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case '?' :
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/* An error message should already have been displayed */
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exit(1);
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|
default :
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|
fprintf(stderr,"%s: FATAL: getopt returned unrecognised code 0x%08X\n",progname,c);
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exit(1);
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}
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}
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|
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if (optind < argc) {
|
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fprintf(stderr,"%s: Spurios non-option arguments ",progname);
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while (optind < argc)
|
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fprintf(stderr,"\"%s\" ",argv[optind++]);
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fprintf(stderr,"\n");
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exit(1);
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}
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|
|
if ((features & FEATURE_FAST) && (features & FEATURE_WARNINGS))
|
|
fprintf(stderr,"Warning: Fast model generation selected, along with trace or warnings.\n");
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process_instructions(doarch,features) ;
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return(0) ;
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}
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|
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/*---------------------------------------------------------------------------*/
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|
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/* We can't assume that the compiler for the build system has strtoul,
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so we provide our own copy. */
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|
|
/*
|
|
* Copyright (c) 1990 Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Convert a string to an unsigned long integer.
|
|
*
|
|
* Ignores `locale' stuff. Assumes that the upper and lower case
|
|
* alphabets and digits are each contiguous.
|
|
*/
|
|
static unsigned long
|
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my_strtoul(nptr, endptr, base)
|
|
const char *nptr;
|
|
char **endptr;
|
|
register int base;
|
|
{
|
|
register const char *s = nptr;
|
|
register unsigned long acc;
|
|
register int c;
|
|
register unsigned long cutoff;
|
|
register int neg = 0, any, cutlim;
|
|
|
|
/*
|
|
* See strtol for comments as to the logic used.
|
|
*/
|
|
do {
|
|
c = *s++;
|
|
} while (isspace(c));
|
|
if (c == '-') {
|
|
neg = 1;
|
|
c = *s++;
|
|
} else if (c == '+')
|
|
c = *s++;
|
|
if ((base == 0 || base == 16) &&
|
|
c == '0' && (*s == 'x' || *s == 'X')) {
|
|
c = s[1];
|
|
s += 2;
|
|
base = 16;
|
|
}
|
|
if (base == 0)
|
|
base = c == '0' ? 8 : 10;
|
|
cutoff = (unsigned long)ULONG_MAX / (unsigned long)base;
|
|
cutlim = (unsigned long)ULONG_MAX % (unsigned long)base;
|
|
for (acc = 0, any = 0;; c = *s++) {
|
|
if (isdigit(c))
|
|
c -= '0';
|
|
else if (isalpha(c))
|
|
c -= isupper(c) ? 'A' - 10 : 'a' - 10;
|
|
else
|
|
break;
|
|
if (c >= base)
|
|
break;
|
|
if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
|
|
any = -1;
|
|
else {
|
|
any = 1;
|
|
acc *= base;
|
|
acc += c;
|
|
}
|
|
}
|
|
if (any < 0) {
|
|
acc = ULONG_MAX;
|
|
errno = ERANGE;
|
|
} else if (neg)
|
|
acc = -acc;
|
|
if (endptr != 0)
|
|
*endptr = (char *) (any ? s - 1 : nptr);
|
|
return (acc);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
/*> EOF gencode.c <*/
|