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binutils-gdb/sim/aarch64/ChangeLog
Jim Wilson c7be441465 Add support for simulating big-endian AArch64 binaries. 
* cpustate.h: Include config.h.
	(union GRegisterValue): Add WORDS_BIGENDIAN check.  For big endian code
	use anonymous structs to align members.
	* simulator.c (aarch64_step): Use sim_core_read_buffer and
	endian_le2h_4 to read instruction from pc.
2016-06-30 09:10:41 +01:00

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2016-06-30 Jim Wilson <jim.wilson@linaro.org>
* cpustate.h: Include config.h.
(union GRegisterValue): Add WORDS_BIGENDIAN check. For big endian code
use anonymous structs to align members.
* simulator.c (aarch64_step): Use sim_core_read_buffer and
endian_le2h_4 to read instruction from pc.
2016-05-06 Nick Clifton <nickc@redhat.com>
* simulator.c (do_FMLA_by_element): New function.
(do_vec_op2): Call it.
2016-04-27 Nick Clifton <nickc@redhat.com>
* simulator.c: Add TRACE_DECODE statements to all emulation
functions.
2016-03-30 Nick Clifton <nickc@redhat.com>
* cpustate.c (aarch64_set_reg_s32): New function.
(aarch64_set_reg_u32): New function.
(aarch64_get_FP_half): Place half precision value into the correct
slot of the union.
(aarch64_set_FP_half): Likewise.
* cpustate.h: Add prototypes for aarch64_set_reg_s32 and
aarch64_set_reg_u32.
* memory.c (FETCH_FUNC): Cast the read value to the access type
before converting it to the return type. Rename to FETCH_FUNC64.
(FETCH_FUNC32): New macro. Duplicates FETCH_FUNC64 but for 32-bit
accesses. Use for 32-bit memory access functions.
* simulator.c (ldrsb_wb): Use sign extension not zero extension.
(ldrb_scale_ext, ldrsh32_abs, ldrsh32_wb): Likewise.
(ldrsh32_scale_ext, ldrsh_abs, ldrsh64_wb): Likewise.
(ldrsh_scale_ext, ldrsw_abs): Likewise.
(ldrh32_abs): Store 32 bit value not 64-bits.
(ldrh32_wb, ldrh32_scale_ext): Likewise.
(do_vec_MOV_immediate): Fix computation of val.
(do_vec_MVNI): Likewise.
(DO_VEC_WIDENING_MUL): New macro.
(do_vec_mull): Use new macro.
(do_vec_mul): Use new macro.
(do_vec_MLA): Read values before writing.
(do_vec_xtl): Likewise.
(do_vec_SSHL): Select correct shift value.
(do_vec_USHL): Likewise.
(do_scalar_UCVTF): New function.
(do_scalar_vec): Call new function.
(store_pair_u64): Treat reads of SP as reads of XZR.
2016-03-29 Nick Clifton <nickc@redhat.com>
* cpustate.c: Remove space after asterisk in function parameters.
* decode.h (greg): Delete unused function.
(vreg, shift, extension, scaling, writeback, condcode): Likewise.
* simulator.c: Use INSTR macro in more places.
(HALT_NYI): Use sim_io_eprintf in place of fprintf.
Remove extraneous whitespace.
2016-03-23 Nick Clifton <nickc@redhat.com>
* cpustate.c (aarch64_get_FP_half): New function. Read a vector
register as a half precision floating point number.
(aarch64_set_FP_half): New function. Similar, but for setting
a half precision register.
(aarch64_get_thread_id): New function. Returns the value of the
CPU's TPIDR register.
(aarch64_get_FPCR): New function. Returns the value of the CPU's
floating point control register.
(aarch64_set_FPCR): New function. Set the value of the CPU's FPCR
register.
* cpustate.h: Add prototypes for new functions.
* sim-main.h (struct _sim_cpu): Add FPCR and tpidr fields.
* memory.c: Use unaligned core access functions for all memory
reads and writes.
* simulator.c (HALT_NYI): Generate an error message if tracing
will not tell the user why the simulator is halting.
(HALT_UNREACHABLE): Delete. Delete (unneeded) uses of the macro.
(INSTR): New time-saver macro.
(fldrb_abs): New function. Loads an 8-bit value using a scaled
offset.
(fldrh_abs): New function. Likewise for 16-bit values.
(do_vec_SSHL): Allow for negative shift values.
(do_vec_USHL): Likewise.
(do_vec_SHL): Correct computation of shift amount.
(do_vec_SSHR_USHR): Correct decision of signed vs unsigned
shifts and computation of shift value.
(clz): New function. Counts leading zero bits.
(do_vec_CLZ): New function. Implements CLZ (vector).
(do_vec_MOV_element): Call do_vec_CLZ.
(dexSimpleFPCondCompare): Implement.
(do_FCVT_half_to_single): New function. Implements one of the
FCVT operations.
(do_FCVT_half_to_double): New function. Likewise.
(do_FCVT_single_to_half): New function. Likewise.
(do_FCVT_double_to_half): New function. Likewise.
(dexSimpleFPDataProc1Source): Call new FCVT functions.
(do_scalar_SHL): Handle negative shifts.
(do_scalar_shift): Handle SSHR.
(do_scalar_USHL): New function.
(do_double_add): Simplify to just performing a double precision
add operation. Move remaining code into...
(do_scalar_vec): ... New function.
(dexLoadUnsignedImmediate): Call new fldrb_abs and fldrh_abs
functions.
(system_get): Add support for TPIDR, CTR, FPCR, FPSR and CPSR
registers.
(system_set): New function.
(do_MSR_immediate): New function. Stub for now.
(do_MSR_reg): New function. Likewise. Partially implements MSR
instruction.
(do_SYS): New function. Stub for now,
(dexSystem): Call new functions.
2016-03-18 Nick Clifton <nickc@redhat.com>
* cpustate.c: Remove spurious spaces from TRACE strings.
Print hex equivalents of floats and doubles.
Check element number against array size when accessing vector
registers.
(GET_VEC_ELEMENT): Fix off by one error checking for an invalid
element index.
(SET_VEC_ELEMENT): Likewise.
(GET_VEC_ELEMENT): And fix thinko using macro arguments.
* memory.c: Trace memory reads when --trace-memory is enabled.
Remove float and double load and store functions.
* memory.h (aarch64_get_mem_float): Delete prototype.
(aarch64_get_mem_double): Likewise.
(aarch64_set_mem_float): Likewise.
(aarch64_set_mem_double): Likewise.
* simulator (IS_SET): Always return either 0 or 1.
(IS_CLEAR): Likewise.
(fldrs_pcrel): Load and store floats using 32-bit memory accesses
and doubles using 64-bit memory accesses.
(fldrd_pcrel, fldrs_wb, fldrs_abs, fldrs_scale_ext): Likewise.
(fldrd_wb, fldrd_abs, fsturs, fsturd, fldurs, fldurd): Likewise.
(fstrs_abs, fstrs_wb, fstrs_scale_ext, fstrd_abs): Likewise.
(fstrd_wb, fstrd_scale_ext, store_pair_float): Likewise.
(store_pair_double, load_pair_float, load_pair_double): Likewise.
(do_vec_MUL_by_element): New function.
(do_vec_op2): Call do_vec_MUL_by_element.
(do_scalar_NEG): New function.
(do_double_add): Call do_scalar_NEG.
2016-03-03 Nick Clifton <nickc@redhat.com>
* simulator.c (set_flags_for_sub32): Correct type of signbit.
(CondCompare): Swap interpretation of bit 30.
(DO_ADDP): Delete macro.
(do_vec_ADDP): Copy source registers before starting to update
destination register.
(do_vec_FADDP): Likewise.
(do_vec_load_store): Fix computation of sizeof_operation.
(rbit64): Fix type of constant.
(aarch64_step): When displaying insn value, display all 32 bits.
2016-01-10 Mike Frysinger <vapier@gentoo.org>
* config.in, configure: Regenerate.
2016-01-10 Mike Frysinger <vapier@gentoo.org>
* configure: Regenerate.
2016-01-10 Mike Frysinger <vapier@gentoo.org>
* configure.ac (SIM_AC_OPTION_ENVIRONMENT): Delete call.
* configure: Regenerate.
2016-01-10 Mike Frysinger <vapier@gentoo.org>
* configure: Regenerate.
2016-01-10 Mike Frysinger <vapier@gentoo.org>
* configure: Regenerate.
2016-01-10 Mike Frysinger <vapier@gentoo.org>
* configure.ac (SIM_AC_OPTION_INLINE): Delete call.
* configure: Regenerate.
2016-01-10 Mike Frysinger <vapier@gentoo.org>
* configure: Regenerate.
2016-01-10 Mike Frysinger <vapier@gentoo.org>
* configure: Regenerate.
2016-01-09 Mike Frysinger <vapier@gentoo.org>
* config.in, configure: Regenerate.
2016-01-06 Mike Frysinger <vapier@gentoo.org>
* interp.c (sim_create_inferior): Mark argv and env const.
(sim_open): Mark argv const.
2016-01-05 Mike Frysinger <vapier@gentoo.org>
* interp.c: Delete dis-asm.h include.
(info, opbuf, op_printf, aarch64_print_insn, sim_dis_read): Delete.
(sim_create_inferior): Delete disassemble init logic.
(OPTION_DISAS, aarch64_option_handler, aarch64_options): Delete.
(sim_open): Delete sim_add_option_table call.
* memory.c (mem_error): Delete disas check.
* simulator.c: Delete dis-asm.h include.
(disas): Delete.
(HALT_UNALLOC): Replace disassembly logic with TRACE_DISASM.
(HALT_NYI): Likewise.
(handle_halt): Delete disas call.
(aarch64_step): Replace disas logic with TRACE_DISASM.
* simulator.h: Delete dis-asm.h include.
(aarch64_print_insn): Delete.
2016-01-04 Mike Frysinger <vapier@gentoo.org>
* simulator.c (MAX, MIN): Delete.
(do_vec_maxv): Change MAX to max and MIN to min.
(do_vec_fminmaxV): Likewise.
2016-01-04 Tristan Gingold <gingold@adacore.com>
* simulator.c: Remove syscall.h include.
2016-01-04 Mike Frysinger <vapier@gentoo.org>
* configure: Regenerate.
2016-01-03 Mike Frysinger <vapier@gentoo.org>
* configure.ac (SIM_AC_OPTION_HOSTENDIAN): Delete.
* configure: Regenerate.
2016-01-02 Mike Frysinger <vapier@gentoo.org>
* configure: Regenerate.
2015-12-27 Mike Frysinger <vapier@gentoo.org>
* interp.c (sim_dis_read): Change private_data to application_data.
(sim_create_inferior): Likewise.
2015-12-27 Mike Frysinger <vapier@gentoo.org>
* Makefile.in (SIM_OBJS): Delete sim-hload.o.
2015-12-26 Mike Frysinger <vapier@gentoo.org>
* config.in, configure: Regenerate.
2015-12-26 Mike Frysinger <vapier@gentoo.org>
* interp.c (sim_create_inferior): Update comment and argv check.
2015-12-14 Nick Clifton <nickc@redhat.com>
* simulator.c (system_get): New function. Provides read
access to the dczid system register.
(do_mrs): New function - implements the MRS instruction.
(dexSystem): Call do_mrs for the MRS instruction. Halt on
unimplemented system instructions.
2015-11-24 Nick Clifton <nickc@redhat.com>
* configure.ac: New configure template.
* aclocal.m4: Generate.
* config.in: Generate.
* configure: Generate.
* cpustate.c: New file - functions for accessing AArch64 registers.
* cpustate.h: New header.
* decode.h: New header.
* interp.c: New file - interface between GDB and simulator.
* Makefile.in: New makefile template.
* memory.c: New file - functions for simulating aarch64 memory
accesses.
* memory.h: New header.
* sim-main.h: New header.
* simulator.c: New file - aarch64 simulator functions.
* simulator.h: New header.
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