Commit Graph

230 Commits

Author SHA1 Message Date
Laurent Vivier
88b2fef6c3 target/m68k: add MC68040 MMU
Only add MC68040 MMU page table processing and related
registers (Special Status Word, Translation Control Register,
User Root Pointer and Supervisor Root Pointer).

Transparent Translation Registers, DFC/SFC and pflush/ptest
will be added later.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180118193846.24953-3-laurent@vivier.eu>
2018-01-25 16:02:24 +01:00
Laurent Vivier
98670d47cd accel/tcg: add size paremeter in tlb_fill()
The MC68040 MMU provides the size of the access that
triggers the page fault.

This size is set in the Special Status Word which
is written in the stack frame of the access fault
exception.

So we need the size in m68k_cpu_unassigned_access() and
m68k_cpu_handle_mmu_fault().

To be able to do that, this patch modifies the prototype of
handle_mmu_fault handler, tlb_fill() and probe_write().
do_unassigned_access() already includes a size parameter.

This patch also updates handle_mmu_fault handlers and
tlb_fill() of all targets (only parameter, no code change).

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180118193846.24953-2-laurent@vivier.eu>
2018-01-25 16:02:24 +01:00
Laurent Vivier
39e3e113bd target/m68k: fix TCG variable double free
t64 is also unconditionally freed after the switch () { ... }

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Thomas Huth <huth@tuxfamily.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180119114444.7590-1-laurent@vivier.eu>
2018-01-25 16:02:24 +01:00
Peter Maydell
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Merge remote-tracking branch 'remotes/vivier/tags/m68k-for-2.12-pull-request' into staging

# gpg: Signature made Thu 04 Jan 2018 16:37:32 GMT
# gpg:                using RSA key 0xF30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>"
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>"
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>"
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier/tags/m68k-for-2.12-pull-request:
  target/m68k: fix m68k_cpu_dump_state()
  target/m68k: add the Interrupt Stack Pointer
  target/m68k: add andi/ori/eori to SR/CCR
  target/m68k: add 680x0 "move to SR" instruction
  target/m68k: move CCR/SR functions
  target/m68k: implement fsave/frestore
  target/m68k: add reset
  target/m68k: add cpush/cinv
  target/m68k: softmmu cleanup
  target/m68k: add move16
  target/m68k: add chk and chk2
  target/m68k: manage 680x0 stack frames
  target/m68k: add CPU_LOG_INT trace
  target/m68k: use insn_pc to generate instruction fault address
  linux-user, m68k: correctly manage SR in context
  target/m68k: fix gen_get_ccr()
  target-m68k: sync CC_OP before gen_jmp_tb()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-08 21:39:44 +00:00
Laurent Vivier
cc52302676 target/m68k: fix m68k_cpu_dump_state()
Display correctly the Trace bits for 680x0
(2 bits instead of 1 for Coldfire).

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-18-laurent@vivier.eu>
2018-01-04 17:24:35 +01:00
Laurent Vivier
6e22b28e22 target/m68k: add the Interrupt Stack Pointer
Add the third stack pointer, the Interrupt Stack Pointer (ISP)
(680x0 only). This stack will be needed in softmmu mode.

Update movec to set/get the value of the three stacks.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-17-laurent@vivier.eu>
2018-01-04 17:24:35 +01:00
Laurent Vivier
b5ae1edc29 target/m68k: add andi/ori/eori to SR/CCR
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-16-laurent@vivier.eu>
2018-01-04 17:24:35 +01:00
Laurent Vivier
b6a21d8d8f target/m68k: add 680x0 "move to SR" instruction
Some cleanup, and allows SR to be moved from any addressing mode.
Previous code was wrong for coldfire: coldfire also allows to
use addressing mode to set SR/CCR. It only supports Data register
to get SR/CCR (move from)

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-15-laurent@vivier.eu>
2018-01-04 17:24:35 +01:00
Laurent Vivier
01490ea8f5 target/m68k: move CCR/SR functions
The following patches will be clearer if we move
functions before adding new ones.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-14-laurent@vivier.eu>
2018-01-04 17:24:35 +01:00
Laurent Vivier
fff3b4b0e1 target/m68k: implement fsave/frestore
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-13-laurent@vivier.eu>
2018-01-04 17:24:35 +01:00
Laurent Vivier
0bdb2b3bf5 target/m68k: add reset
The instruction traps if the CPU is not in
Supervisor state but the helper is empty because
there is no easy way to reset all the peripherals
without resetting the CPU itself.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-12-laurent@vivier.eu>
2018-01-04 17:24:35 +01:00
Laurent Vivier
f58ed1c50a target/m68k: add cpush/cinv
Add cache lines invalidate and cache lines push
as no-op operations, as we don't have cache.

These instructions are 68040 only.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-11-laurent@vivier.eu>
2018-01-04 17:24:35 +01:00
Laurent Vivier
6ad257641d target/m68k: softmmu cleanup
don't compile supervisor only instructions in linux-user mode

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-10-laurent@vivier.eu>
2018-01-04 17:24:35 +01:00
Laurent Vivier
9d4f0429f3 target/m68k: add move16
move16 moves the source line to the destination line. Lines are aligned
to 16-byte boundaries and are 16 bytes long.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-9-laurent@vivier.eu>
2018-01-04 17:24:34 +01:00
Laurent Vivier
8bf6cbaf39 target/m68k: add chk and chk2
chk and chk2 compare a value to boundaries, and
trigger a CHK exception if the value is out of bounds.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-8-laurent@vivier.eu>
2018-01-04 17:24:31 +01:00
Laurent Vivier
d2f8fb8e7f target/m68k: manage 680x0 stack frames
680x0 manages several stack frame formats:
  - format 0: four-word stack frame
  - format 1: four-word throwaway stack frame
  - format 2: six-word stack frame
  - format 3: Floating-Point post-instruction stack frame
  - format 4: eight-word stack frame
  - format 7: access-error stack frame

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-7-laurent@vivier.eu>
2018-01-04 17:22:36 +01:00
Laurent Vivier
5beb144e04 target/m68k: add CPU_LOG_INT trace
Display the interrupts/exceptions information
in QEMU logs (-d int)

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-6-laurent@vivier.eu>
2018-01-04 16:53:13 +01:00
Laurent Vivier
16a14cdf57 target/m68k: use insn_pc to generate instruction fault address
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-5-laurent@vivier.eu>
2018-01-04 16:46:59 +01:00
Laurent Vivier
4131c242cc target/m68k: fix gen_get_ccr()
As gen_helper_get_ccr() is able to compute CCR from cc_op and
flags, we don't need to flush flags before to call it.
flush_flags() and get_ccr() use COMPUTE_CCR() to compute
flags. get_ccr() computes CCR value,
whereas flush_flags update live cc_op and flags.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-3-laurent@vivier.eu>
2018-01-04 16:44:48 +01:00
Laurent Vivier
7cd7b5ca9b target-m68k: sync CC_OP before gen_jmp_tb()
And remove update_cc_op() from gen_exception() because there is
one in gen_jmp_im().

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-2-laurent@vivier.eu>
2018-01-04 16:43:24 +01:00
Richard Henderson
f764718d0c tcg: Remove TCGV_UNUSED* and TCGV_IS_UNUSED*
These are now trivial sets and tests against NULL.  Unwrap.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2017-12-29 12:43:39 -08:00
Alex Bennée
65255e8efd target/*helper: don't check retaddr before calling cpu_restore_state
cpu_restore_state officially supports being passed an address it can't
resolve the state for. As a result the checks in the helpers are
superfluous and can be removed. This makes the code consistent with
other users of cpu_restore_state.

Of course this does nothing to address what to do if cpu_restore_state
can't resolve the state but so far it seems this is handled elsewhere.

The change was made with included coccinelle script.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
[rth: Fixed up comment indentation.  Added second hunk to script to
combine cpu_restore_state and cpu_loop_exit.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2017-12-27 17:20:44 -08:00
Laurent Vivier
7deddf96e9 target/m68k: fix set_cc_op()
The first call of set_cc_op() in a new translation sequence
is done with old_op set to CC_OP_DYNAMIC (-1).

This will do an out of bound access to the array cc_op_live[].

We fix that by adding an entry in cc_op_live[] for CC_OP_DYNAMIC.

Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20171221160558.14151-1-laurent@vivier.eu>
2017-12-21 20:11:28 +01:00
Laurent Vivier
cea066821c target/m68k: add monitor.c
This allows to use registers content in the monitor.

Example:

 BEFORE:
  (qemu) print $d0
  unknown register

 AFTER:
  (qemu) print $d0
  0
  (qemu) print $sr
  0x2000
  (qemu) x/10i $pc
  0x40010a2a:  movew %sr,%d0
  0x40010a2c:  oril #1792,%d0
  0x40010a32:  movew %d0,%sr
  0x40010a34:  movel %a0@,%d0
  0x40010a36:  btst #3,%d0
  0x40010a3a:  beqs 0x40010a26
  0x40010a3c:  movew %sr,%d0
  0x40010a3e:  andil #63743,%d0
  0x40010a44:  movew %d0,%sr
  0x40010a46:  rts

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <huth@tuxfamily.org>
Message-Id: <20171221083057.17942-1-laurent@vivier.eu>
2017-12-21 20:11:28 +01:00
Laurent Vivier
5f63f6ab50 target/m68k: remove unused variable gen_throws_exception
It has been introduced by e6e5906b6e ("ColdFire target."),
but the content is never used.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <huth@tuxfamily.org>
Message-Id: <20171220130815.20708-1-laurent@vivier.eu>
2017-12-21 20:11:28 +01:00
Peter Maydell
ab752f237d x86/cpu/numa queue, 2017-10-27
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Merge remote-tracking branch 'remotes/ehabkost/tags/x86-and-machine-pull-request' into staging

x86/cpu/numa queue, 2017-10-27

# gpg: Signature made Fri 27 Oct 2017 15:17:12 BST
# gpg:                using RSA key 0x2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/x86-and-machine-pull-request: (39 commits)
  x86: Skip check apic_id_limit for Xen
  numa: fixup parsed NumaNodeOptions earlier
  mips: r4k: replace cpu_model with cpu_type
  mips: mipssim: replace cpu_model with cpu_type
  mips: Magnum/Acer Pica 61: replace cpu_model with cpu_type
  mips: fulong2e: replace cpu_model with cpu_type
  mips: malta/boston: replace cpu_model with cpu_type
  mips: use object_new() instead of gnew()+object_initialize()
  sparc: leon3: use generic cpu_model parsing
  sparc: sparc: use generic cpu_model parsing
  sparc: sun4u/sun4v/niagara: use generic cpu_model parsing
  sparc: cleanup cpu type name composition
  tricore: use generic cpu_model parsing
  tricore: cleanup cpu type name composition
  unicore32: use generic cpu_model parsing
  unicore32: cleanup cpu type name composition
  xtensa: lx60/lx200/ml605/kc705: use generic cpu_model parsing
  xtensa: sim: use generic cpu_model parsing
  xtensa: cleanup cpu type name composition
  sh4: remove SuperHCPUClass::name field
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-10-30 10:11:22 +00:00
Igor Mammedov
f61797bd94 m68k: cleanup cpu type name composition
use new M68K_CPU_TYPE_NAME to compose CPU type names
and get rid of intermediate M68kCPUInfo/register_cpu_type()
which is replaced by static TypeInfo array.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1507211474-188400-12-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-10-27 16:03:54 +02:00
Peter Maydell
6e6430a821 Capstone disassembler
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Merge remote-tracking branch 'remotes/rth/tags/pull-dis-20171026' into staging

Capstone disassembler

# gpg: Signature made Thu 26 Oct 2017 10:57:27 BST
# gpg:                using RSA key 0x64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-dis-20171026:
  disas: Add capstone as submodule
  disas: Remove monitor_disas_is_physical
  ppc: Support Capstone in disas_set_info
  arm: Support Capstone in disas_set_info
  i386: Support Capstone in disas_set_info
  disas: Support the Capstone disassembler library
  disas: Remove unused flags arguments
  target/arm: Don't set INSN_ARM_BE32 for CONFIG_USER_ONLY
  target/arm: Move BE32 disassembler fixup
  target/ppc: Convert to disas_set_info hook
  target/i386: Convert to disas_set_info hook

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

# Conflicts:
#	target/i386/cpu.c
#	target/ppc/translate_init.c
2017-10-27 08:04:51 +01:00
Richard Henderson
1d48474d8e disas: Remove unused flags arguments
Now that every target is using the disas_set_info hook,
the flags argument is unused.  Remove it.

Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2017-10-25 11:55:09 +02:00
Richard Henderson
1c2adb958f tcg: Initialize cpu_env generically
This is identical for each target.  So, move the initialization to
common code.  Move the variable itself out of tcg_ctx and name it
cpu_env to minimize changes within targets.

This also means we can remove tcg_global_reg_new_{ptr,i32,i64},
since there are no longer global-register temps created by targets.

Reviewed-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2017-10-24 13:53:42 -07:00
Emilio G. Cota
b1311c4acf tcg: define tcg_init_ctx and make tcg_ctx a pointer
Groundwork for supporting multiple TCG contexts.

The core of this patch is this change to tcg/tcg.h:

> -extern TCGContext tcg_ctx;
> +extern TCGContext tcg_init_ctx;
> +extern TCGContext *tcg_ctx;

Note that for now we set *tcg_ctx to whatever TCGContext is passed
to tcg_context_init -- in this case &tcg_init_ctx.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2017-10-24 13:53:42 -07:00
Emilio G. Cota
f0ddf11b23 target/m68k: check CF_PARALLEL instead of parallel_cpus
Thereby decoupling the resulting translated code from the current state
of the system.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2017-10-24 13:53:41 -07:00
Emilio G. Cota
c5a49c63fa tcg: convert tb->cflags reads to tb_cflags(tb)
Convert all existing readers of tb->cflags to tb_cflags, so that we
use atomic_read and therefore avoid undefined behaviour in C11.

Note that the remaining setters/getters of the field are protected
by tb_lock, and therefore do not need conversion.

Luckily all readers access the field via 'tb->cflags' (so no foo.cflags,
bar->cflags in the code base), which makes the conversion easily
scriptable:

FILES=$(git grep 'tb->cflags' target include/exec/gen-icount.h \
	 accel/tcg/translator.c | cut -f1 -d':' | sort | uniq)

perl -pi -e 's/([^.>])tb->cflags/$1tb_cflags(tb)/g' $FILES
perl -pi -e 's/([a-z->.]*)(->|\.)tb->cflags/tb_cflags($1$2tb)/g' $FILES

Then manually fixed the few errors that checkpatch reported.

Compile-tested for all targets.

Suggested-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2017-10-24 13:53:41 -07:00
Richard Henderson
55c3ceef61 qom: Introduce CPUClass.tcg_initialize
Move target cpu tcg initialization to common code,
called from cpu_exec_realizefn.

Acked-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2017-10-24 22:00:13 +02:00
Richard Henderson
11f4e8f8bf tcg: Remove TCGV_EQUAL*
When we used structures for TCGv_*, we needed a macro in order to
perform a comparison.  Now that we use pointers, this is just clutter.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2017-10-24 21:50:15 +02:00
Philippe Mathieu-Daudé
8301ea444a qom/cpu: move cpu_model null check to cpu_class_by_name()
and clean every implementation.

Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20170917232842.14544-1-f4bug@amsat.org>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Artyom Tarasenko <atar4qemu@gmail.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-10-09 23:21:52 -03:00
Kamil Rytarowski
6fa9ba09db target/m68k: Switch fpu_rom from make_floatx80() to make_floatx80_init()
GCC 4.7.2 on SunOS reports that the values assigned to array members are not
real constants:

target/m68k/fpu_helper.c:32:5: error: initializer element is not constant
target/m68k/fpu_helper.c:32:5: error: (near initialization for 'fpu_rom[0]')
rules.mak:66: recipe for target 'target/m68k/fpu_helper.o' failed

Convert the array to make_floatx80_init() to fix it.
Replace floatx80_pi-like constants with make_floatx80_init() as they are
defined as make_floatx80().

This fixes build on SmartOS (Joyent).

Signed-off-by: Kamil Rytarowski <n54@gmx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20170904212306.3020-1-n54@gmx.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2017-09-10 18:07:40 +02:00
Lluís Vilanova
77fc6f5e28 target: [tcg] Use a generic enum for DISAS_ values
Used later. An enum makes expected values explicit and
bounds the value space of switches.

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Reviewed-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <150002049746.22386.2316077281615710615.stgit@frigg.lan>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-06 08:06:47 -07:00
Igor Mammedov
f47cf4e31c m68k: replace cpu_m68k_init() with cpu_generic_init()
call register_m68k_insns() at realize time which makes
cpu_m68k_init() typical object creation function.
As result we can replace it with cpu_generic_init()
which does the same job, reducing code duplication a bit.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Thomas Huth <huth@tuxfamily.org>
Acked-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1503592308-93913-12-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-09-01 11:54:24 -03:00
Philippe Mathieu-Daudé
4b5660e403 m68k/translate: fix incorrect copy/paste
db3d7945ae extended gen_cc_cond() for cond [6, 7, 9, 10] but misswrote [4, 5]

target/m68k/translate.c:1323:70: warning: identical expressions on both sides of logical operator
        if (op == CC_OP_ADDB || op == CC_OP_ADDW || op == CC_OP_ADDL ||
            op == CC_OP_ADDB || op == CC_OP_ADDW || op == CC_OP_ADDL) {
            ~~~~~~~~~~~~~~~~    ~~~~~~~~~~~~~~~~    ~~~~~~~~~~~~~~~~ ^

Reported-by: Clang Static Analyzer
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-07-31 13:06:39 +03:00
Lluís Vilanova
9c489ea6be tcg: Pass generic CPUState to gen_intermediate_code()
Needed to implement a target-agnostic gen_intermediate_code()
in the future.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Alex Benneé <alex.benee@linaro.org>
Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Message-Id: <150002025498.22386.18051908483085660588.stgit@frigg.lan>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-07-19 14:45:16 -07:00
Philippe Mathieu-Daudé
0d9acef240 target/m68k: optimize bcd_flags() using extract op
Done with the Coccinelle semantic patch
scripts/coccinelle/tcg_gen_extract.cocci.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170718045540.16322-5-f4bug@amsat.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-07-19 14:45:15 -07:00
Laurent Vivier
a1e58ddcb3 target/m68k: add fmovem
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170628204241.32106-8-laurent@vivier.eu>
2017-06-29 20:29:57 +02:00
Laurent Vivier
77bdb22924 target/m68k: add explicit single and double precision operations (part 2)
Add fsabs, fdabs, fsneg, fdneg, fsmove and fdmove.

The value is converted using the new floatx80_round() function.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170628204241.32106-7-laurent@vivier.eu>
2017-06-29 20:29:00 +02:00
Laurent Vivier
2f77995ceb target/m68k: add fsglmul and fsgldiv
fsglmul and fsgldiv truncate data to single precision before computing
results.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170628204241.32106-6-laurent@vivier.eu>
2017-06-29 20:28:22 +02:00
Laurent Vivier
a51b6bc38b target/m68k: add explicit single and double precision operations
Add fssqrt, fdsqrt, fsadd, fdadd, fssub, fdsub, fsmul, fdmul,
fsdiv, fddiv.

The precision is managed using set_floatx80_rounding_precision().

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170628204241.32106-4-laurent@vivier.eu>
2017-06-29 20:26:56 +02:00
Laurent Vivier
9d403660d9 target/m68k: add fmovecr
fmovecr moves a floating point constant from the
FPU ROM to a floating point register.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20170628204241.32106-3-laurent@vivier.eu>
2017-06-29 20:26:01 +02:00
Laurent Vivier
dd337bf862 target/m68k: add fscc.
use DisasCompare with FPU conditions in fscc and fbcc.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170628204241.32106-2-laurent@vivier.eu>
2017-06-29 20:25:17 +02:00
Laurent Vivier
ba62494483 target-m68k: add FPCR and FPSR
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170620205121.26515-6-laurent@vivier.eu>
2017-06-21 22:11:55 +02:00
Laurent Vivier
5a4526b26a target-m68k: define 96bit FP registers for gdb on 680x0
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170620205121.26515-5-laurent@vivier.eu>
2017-06-21 22:11:12 +02:00
Laurent Vivier
f83311e476 target-m68k: use floatx80 internally
Coldfire uses float64, but 680x0 use floatx80.
This patch introduces the use of floatx80 internally
and enables 680x0 80bits FPU.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170620205121.26515-4-laurent@vivier.eu>
2017-06-21 22:10:29 +02:00
Laurent Vivier
f4a6ce5155 target-m68k: initialize FPU registers
on reset, set FP registers to NaN and control registers to 0

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170620205121.26515-3-laurent@vivier.eu>
2017-06-21 22:09:45 +02:00
Laurent Vivier
860b9ac779 target-m68k: move fmove CR to a function
Move code of fmove to/from control register to a function

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20170620205121.26515-2-laurent@vivier.eu>
2017-06-21 21:57:39 +02:00
Laurent Vivier
69e698220f target-m68k: define ext_opsize
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170611231633.32582-4-laurent@vivier.eu>
2017-06-15 09:16:38 +02:00
Laurent Vivier
c88f8107b1 target-m68k: move FPU helpers to fpu_helper.c
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170611231633.32582-3-laurent@vivier.eu>
2017-06-15 09:16:16 +02:00
Laurent Vivier
043b936ef6 target/m68k: fix V flag for CC_OP_SUBx
V flag for subtraction is:

   v = (res ^ src1) & (src1 ^ src2)

(see COMPUTE_CCR() in target/m68k/helper.c)

But gen_flush_flags() uses:

   v = (res ^ src2) & (src1 ^ src2)

The problem has been found with the following program:

        .global _start
_start:
        move.l  #-2147483648,%d0
        subq.l  #1,%d0
        jvc     1f
        move.l #1,%d1
        move.l #1,%d0
        trap #0
1:
        move.l #0,%d1
        move.l #1,%d0
        trap #0

It works fine (exit(1)) on real hardware, and with "-singlestep".

"-singlestep" uses gen_helper_flush_flags(), whereas
without "-singlestep", V flag is computed directly in
gen_flush_flags().

This patch updates gen_flush_flags() to have the same result
as with gen_helper_flush_flags().

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170614203905.19657-1-laurent@vivier.eu>
2017-06-15 08:50:30 +02:00
Laurent Vivier
18059c9e16 target/m68k: implement rtd
Add "Return and Deallocate" (rtd) instruction.

  RTD #d

    (SP) -> PC
    SP + 4 + d -> SP

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Tested-By: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Message-Id: <20170605100014.22981-1-laurent@vivier.eu>
2017-06-07 11:18:30 +02:00
Peter Maydell
a8c611e113 This is the same as the v3 posted except a re-base and a few extra signoffs
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Merge remote-tracking branch 'remotes/stsquad/tags/pull-tcg-common-tlb-reset-20170113-r1' into staging

This is the same as the v3 posted except a re-base and a few extra signoffs

# gpg: Signature made Fri 13 Jan 2017 14:26:46 GMT
# gpg:                using RSA key 0xFBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>"
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* remotes/stsquad/tags/pull-tcg-common-tlb-reset-20170113-r1:
  cputlb: drop flush_global flag from tlb_flush
  cpu_common_reset: wrap TCG specific code in tcg_enabled()
  qom/cpu: move tlb_flush to cpu_common_reset

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-01-16 18:23:02 +00:00
Laurent Vivier
727d937b59 target-m68k: increment/decrement with SP
On 680x0 family only.

Address Register indirect With postincrement:

When using the stack pointer (A7) with byte size data, the register
is incremented by two.

Address Register indirect With predecrement:

When using the stack pointer (A7) with byte size data, the register
is decremented by two.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Thomas Huth <huth@tuxfamily.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1484332593-16782-6-git-send-email-laurent@vivier.eu>
2017-01-14 10:06:21 +01:00
Laurent Vivier
b19578f428 target-m68k: CAS doesn't need aligned access
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1484332593-16782-5-git-send-email-laurent@vivier.eu>
2017-01-14 10:06:21 +01:00
Laurent Vivier
308feb9352 target-m68k: manage pre-dec et post-inc in CAS
In these cases we must update the address register after
the operation.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1484332593-16782-4-git-send-email-laurent@vivier.eu>
2017-01-14 10:06:21 +01:00
Laurent Vivier
695576db2d target-m68k: fix gen_flush_flags()
gen_flush_flags() is setting unconditionally cc_op_synced to 1
and s->cc_op to CC_OP_FLAGS, whereas env->cc_op can be set
to something else by a previous tcg fragment.

We fix that by not setting cc_op_synced to 1
(except for gen_helper_flush_flags() that updates env->cc_op)

FIX: https://github.com/vivier/qemu-m68k/issues/19

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1484332593-16782-3-git-send-email-laurent@vivier.eu>
2017-01-14 10:06:21 +01:00
Laurent Vivier
fe53c2be8c target-m68k: fix bit operation with immediate value
M680x0 bit operations with an immediate value use 9 bits of the 16bit
value, while coldfire ones use only 8 bits.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1484332593-16782-2-git-send-email-laurent@vivier.eu>
2017-01-14 10:06:21 +01:00
Richard Henderson
a45f1763cc target-m68k: Implement bfffo
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1479242669-25852-1-git-send-email-rth@twiddle.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2017-01-14 10:06:21 +01:00
Richard Henderson
f2224f2c9a target-m68k: Implement bitfield ops for memory
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1478699171-10637-6-git-send-email-rth@twiddle.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2017-01-14 10:06:21 +01:00
Richard Henderson
ac815f46a3 target-m68k: Implement bitfield ops for registers
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1478699171-10637-5-git-send-email-rth@twiddle.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2017-01-14 10:06:21 +01:00
Alex Bennée
1f5c00cfdb qom/cpu: move tlb_flush to cpu_common_reset
It is a common thing amongst the various cpu reset functions want to
flush the SoftMMU's TLB entries. This is done either by calling
tlb_flush directly or by way of a general memset of the CPU
structure (sometimes both).

This moves the tlb_flush call to the common reset function and
additionally ensures it is only done for the CONFIG_SOFTMMU case and
when tcg is enabled.

In some target cases we add an empty end_of_reset_fields structure to the
target vCPU structure so have a clear end point for any memset which
is resetting value in the structure before CPU_COMMON (where the TLB
structures are).

While this is a nice clean-up in general it is also a precursor for
changes coming to cputlb for MTTCG where the clearing of entries
can't be done arbitrarily across vCPUs. Currently the cpu_reset
function is usually called from the context of another vCPU as the
architectural power up sequence is run. By using the cputlb API
functions we can ensure the right behaviour in the future.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
2017-01-13 14:24:31 +00:00
Laurent Vivier
2b5e217067 target-m68k: free TCG variables that are not
This is a cleanup patch. It adds call to tcg_temp_free()
when it is missing.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-12-27 18:28:40 +01:00
Laurent Vivier
0194cf31cf target-m68k: add rol/ror/roxl/roxr instructions
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-12-27 18:28:40 +01:00
Richard Henderson
367790cce8 target-m68k: Inline shifts
Also manage word and byte operands and fix the computation of
overflow in the case of M68000 arithmetic shifts.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1478699171-10637-4-git-send-email-rth@twiddle.net>
2016-12-27 18:28:40 +01:00
Richard Henderson
72d2e4b6a4 target-m68k: Do not cpu_abort on undefined insns
Report this properly via exception and, importantly, allow
the disassembler the chance to tell us what insn is not handled.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1478699171-10637-3-git-send-email-rth@twiddle.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2016-12-27 18:28:40 +01:00
Laurent Vivier
7b542eb96d target-m68k: Implement 680x0 movem
680x0 movem can load/store words and long words and can use more
addressing modes.  Coldfire can only use long words with (Ax) and
(d16,Ax) addressing modes.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1478699171-10637-2-git-send-email-rth@twiddle.net>
2016-12-27 18:28:39 +01:00
Laurent Vivier
14f944063a target-m68k: add cas/cas2 ops
Implement CAS using cmpxchg.
Implement CAS2 using helper and either cmpxchg when
the 32bit addresses are consecutive, or with
parallel_cpus+cpu_loop_exit_atomic() otherwise.

Suggested-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-12-27 18:21:09 +01:00
Laurent Vivier
fb5543d820 target-m68k: add abcd/sbcd/nbcd
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-12-27 18:16:42 +01:00
Laurent Vivier
0ccb9c1d81 target-m68k: add 680x0 divu/divs variants
Update helper to set the throwing location in case of div-by-0.
Cleanup divX.w and add quad word variants of divX.l.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twidle.net>
[laurent: modified to clear Z on overflow, as found with risu]
2016-12-27 18:16:42 +01:00
Laurent Vivier
8be95defd6 target-m68k: add 64bit mull
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twidle.net>
2016-12-27 18:16:42 +01:00
Laurent Vivier
817af1c72d target-m68k: add cmpm
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1477604609-2206-2-git-send-email-laurent@vivier.eu>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1478206203-4606-4-git-send-email-rth@twiddle.net>
2016-12-27 18:16:42 +01:00
Richard Henderson
f84aab269d target-m68k: Split gen_lea and gen_ea
Provide gen_lea_mode and gen_ea_mode, where the mode can be
specified manually, rather than taken from the instruction.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1478206203-4606-3-git-send-email-rth@twiddle.net>
2016-12-27 18:16:42 +01:00
Richard Henderson
8a1e52b69d target-m68k: Delay autoinc writeback
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1478206203-4606-2-git-send-email-rth@twiddle.net>
2016-12-27 18:16:42 +01:00
Thomas Huth
fcf5ef2ab5 Move target-* CPU file into a target/ folder
We've currently got 18 architectures in QEMU, and thus 18 target-xxx
folders in the root folder of the QEMU source tree. More architectures
(e.g. RISC-V, AVR) are likely to be included soon, too, so the main
folder of the QEMU sources slowly gets quite overcrowded with the
target-xxx folders.
To disburden the main folder a little bit, let's move the target-xxx
folders into a dedicated target/ folder, so that target-xxx/ simply
becomes target/xxx/ instead.

Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part]
Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part]
Acked-by: Michael Walle <michael@walle.cc> [lm32 part]
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part]
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part]
Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part]
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part]
Acked-by: Richard Henderson <rth@twiddle.net> [alpha part]
Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part]
Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part]
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [cris&microblaze part]
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part]
Signed-off-by: Thomas Huth <thuth@redhat.com>
2016-12-20 21:52:12 +01:00