Commit Graph

259 Commits

Author SHA1 Message Date
Thomas Huth
e22d3c48db disas: Move softmmu specific code to separate file
We'd like to move disas.c into the common code source set, where
CONFIG_USER_ONLY is not available anymore. So we have to move
the related code into a separate file instead.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230508133745.109463-2-thuth@redhat.com>
[rth: Type change done in a separate patch]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-05-11 09:49:55 +01:00
Richard Henderson
45dfbd4320 disas: Remove target-specific headers
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230503072331.1747057-83-richard.henderson@linaro.org>
2023-05-11 09:49:55 +01:00
Richard Henderson
b6235a759a disas: Remove target_ulong from the interface
Use uint64_t for the pc, and size_t for the size.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230503072331.1747057-81-richard.henderson@linaro.org>
2023-05-11 09:49:51 +01:00
Richard Henderson
f779026478 disas: Move disas.c to disas/
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230503072331.1747057-80-richard.henderson@linaro.org>
2023-05-11 09:49:25 +01:00
Weiwei Li
2c71d02e17 disas/riscv.c: add disasm support for Zc*
Zcmp/Zcmt instructions will override disasm for c.fld*/c.fsd*
instructions currently.

Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230307081403.61950-10-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2023-05-05 10:49:50 +10:00
Mikhail Tyutin
0d581506de Fix incorrect register name in disassembler for fmv,fabs,fneg instructions
Fix incorrect register name in RISC-V disassembler for fmv,fabs,fneg instructions

Signed-off-by: Mikhail Tyutin <m.tyutin@yadro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <3454991f-7f64-24c3-9a36-f5fa2cc389e1@yadro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2023-03-14 16:36:43 +10:00
Ivan Klokov
13e269f64a disas/riscv: Fix slli_uw decoding
The decoding of the slli_uw currently contains decoding
error: shamt part of opcode has six bits, not five.

Fixes 3de1fb71("target/riscv: update disas.c for xnor/orn/andn and slli.uw")

Signed-off-by: Ivan Klokov <ivan.klokov@syntacore.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@vrull.eu>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230227090228.17117-1-ivan.klokov@syntacore.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2023-03-14 16:36:30 +10:00
Ivan Klokov
270629024d
disas/riscv Fix ctzw disassemble
Due to typo in opcode list, ctzw is disassembled as clzw instruction.

Signed-off-by: Ivan Klokov <ivan.klokov@syntacore.com>
Fixes: 02c1b569a1 ("disas/riscv: Add Zb[abcs] instructions")
Reviewed-by: Weiwei Li <liweiwei@iscas.ac.cn>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20230217151459.54649-1-ivan.klokov@syntacore.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-03-05 12:43:38 -08:00
Philipp Tomsich
3de1fb712a target/riscv: update disas.c for xnor/orn/andn and slli.uw
The decoding of the following instructions from Zb[abcs] currently
contains decoding/printing errors:
 * xnor,orn,andn: the rs2 operand is not being printed
 * slli.uw: decodes and prints the immediate shift-amount as a
            register (e.g. 'shift-by-2' becomes 'sp') instead of
	    interpreting this as an immediate

This commit updates the instruction descriptions to use the
appropriate decoding/printing formats.

Signed-off-by: Philipp Tomsich <philipp.tomsich@vrull.eu>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230120151551.1022761-1-philipp.tomsich@vrull.eu>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2023-02-07 08:19:22 +10:00
Paolo Bonzini
f995037430 mips: Always include nanomips disassembler
Since the nanomips disassembler is not C++ code anymore, it need not
depend on link_language == cpp.  Always include it and remove the
CONFIG_NANOMIPS_DIS symbol.

Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230110084942.299460-1-pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2023-01-13 16:22:53 +01:00
Richard Henderson
bb3daca71b disas/nanomips: Tidy read for 48-bit opcodes
There is no point in looking for a 48-bit opcode if we've
not read the second word for a 32-bit opcode.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221106023735.5277-5-richard.henderson@linaro.org>
2022-11-08 01:04:25 +01:00
Richard Henderson
1414e3f565 disas/nanomips: Split out read_u16
Split out a helper function for reading a uint16_t
with the correct endianness.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221106023735.5277-4-richard.henderson@linaro.org>
2022-11-08 01:04:25 +01:00
Richard Henderson
ad120616ed disas/nanomips: Merge insn{1,2,3} into words[3]
Since Disassemble wants the data in this format, collect
it that way.  This allows using a loop to print the bytes.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221106212852.152384-3-richard.henderson@linaro.org>
2022-11-08 01:04:25 +01:00
Richard Henderson
24449fc0f5 disas/nanomips: Move setjmp into nanomips_dis
Reduce the number of local variables within the scope of the
setjmp by moving it to the existing helper.  The actual length
returned from Disassemble is not used, because we have already
determined the length while reading bytes.  Fixes:

nanomips.c: In function ‘print_insn_nanomips’:
nanomips.c:21925:14: error: variable ‘insn1’ might be clobbered by ‘longjmp’ or ‘vfork’ [-Werror=clobbered]
nanomips.c:21925:25: error: variable ‘insn2’ might be clobbered by ‘longjmp’ or ‘vfork’ [-Werror=clobbered]
nanomips.c:21925:36: error: variable ‘insn3’ might be clobbered by ‘longjmp’ or ‘vfork’ [-Werror=clobbered]
nanomips.c:21926:22: error: variable ‘buf’ might be clobbered by ‘longjmp’ or ‘vfork’ [-Werror=clobbered]

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221106212852.152384-2-richard.henderson@linaro.org>
2022-11-08 01:04:25 +01:00
Philippe Mathieu-Daudé
e9ebb6677b disas/nanomips: Remove headers already included by "qemu/osdep.h"
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221101114458.25756-5-philmd@linaro.org>
2022-11-08 01:04:25 +01:00
Philippe Mathieu-Daudé
d03a008e82 disas/nanomips: Use G_GNUC_PRINTF to avoid invalid string formats
Suggested-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221101114458.25756-4-philmd@linaro.org>
2022-11-08 01:04:25 +01:00
Philippe Mathieu-Daudé
50fc0945b6 disas/nanomips: Fix invalid PRIx64 format calling img_format()
Fix:

  disas/nanomips.c:12231:62: warning: format specifies type 'char *' but the argument has type 'uint64' (aka 'unsigned long long') [-Wformat]
    return img_format("RESTOREF 0x%" PRIx64 ", %s", u_value, count_value);
                                               ~~            ^~~~~~~~~~~
                                               %llu

Fixes: 4066c152b3 ("disas/nanomips: Remove IMMEDIATE functions")
Reported-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221101114458.25756-3-philmd@linaro.org>
2022-11-08 01:04:25 +01:00
Philippe Mathieu-Daudé
04849c94fe disas/nanomips: Fix invalid PRId64 format calling img_format()
Fix warnings such:

  disas/nanomips.c:3251:64: warning: format specifies type 'char *' but the argument has type 'int64' (aka 'long long') [-Wformat]
    return img_format("CACHE 0x%" PRIx64 ", %s(%s)", op_value, s_value, rs);
                                            ~~                 ^~~~~~~
                                            %lld

To avoid crashes such (kernel from commit f375ad6a0d):

  $ qemu-system-mipsel -cpu I7200 -d in_asm -kernel generic_nano32r6el_page4k
  ...
  ----------------
  IN: __bzero
  0x805c6084:  20c4 6950      ADDU r13, a0, a2
  0x805c6088:  9089           ADDIU a0, 1
  Process 70261 stopped
  * thread #6, stop reason = EXC_BAD_ACCESS (code=1, address=0xfffffffffffffff0)
      frame #0: 0x00000001bfe38864 libsystem_platform.dylib`_platform_strlen + 4
  libsystem_platform.dylib`:
  ->  0x1bfe38864 <+4>:  ldr    q0, [x1]
      0x1bfe38868 <+8>:  adr    x3, #-0xc8                ; ___lldb_unnamed_symbol314
      0x1bfe3886c <+12>: ldr    q2, [x3], #0x10
      0x1bfe38870 <+16>: and    x2, x0, #0xf
  Target 0: (qemu-system-mipsel) stopped.
  (lldb) bt
  * thread #6, stop reason = EXC_BAD_ACCESS (code=1, address=0xfffffffffffffff0)
    * frame #0: 0x00000001bfe38864 libsystem_platform.dylib`_platform_strlen + 4
      frame #1: 0x00000001bfce76a0 libsystem_c.dylib`__vfprintf + 4544
      frame #2: 0x00000001bfd158b4 libsystem_c.dylib`_vasprintf + 280
      frame #3: 0x0000000101c22fb0 libglib-2.0.0.dylib`g_vasprintf + 28
      frame #4: 0x0000000101bfb7d8 libglib-2.0.0.dylib`g_strdup_vprintf + 32
      frame #5: 0x000000010000fb70 qemu-system-mipsel`img_format(format=<unavailable>) at nanomips.c:103:14 [opt]
      frame #6: 0x0000000100018868 qemu-system-mipsel`SB_S9_(instruction=<unavailable>, info=<unavailable>) at nanomips.c:12616:12 [opt]
      frame #7: 0x000000010000f90c qemu-system-mipsel`print_insn_nanomips at nanomips.c:589:28 [opt]

Fixes: 4066c152b3 ("disas/nanomips: Remove IMMEDIATE functions")
Reported-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221101114458.25756-2-philmd@linaro.org>
2022-11-08 01:04:25 +01:00
David Daney
a6d89b454c disas/mips: Fix branch displacement for BEQZC and BNEZC
disas/mips.c got added in commit 6643d27ea0 ("MIPS disas support")
apparently based on binutils tag 'gdb_6_1-branchpoint' [1].
Back then, MIPSr6 was not supported (added in binutils commit
7361da2c952 during 2014 [2]).

Binutils codebase diverged so much over the last 18 years, it is
not possible to simply cherry-pick their changes, so fix it BEQZC /
BNEZC 21-bit signed branch displacement locally.

[1] https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=opcodes/mips-dis.c;hb=refs/tags/gdb_6_1-branchpoint
[2] https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=7361da2c952

Fixes: 31837be3ee ("target-mips: add compact and CP1 branches")
Signed-off-by: David Daney <david.daney@fungible.com>
Reviewed-by: Marcin Nowakowski <marcin.nowakowski@fungible.com>
[PMD: Added commit description]
Signed-off-by: Philippe Mathieu-Daudé <philmd@fungible.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221014112322.61119-1-philmd@fungible.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
2413e000bb disas/nanomips: Rename nanomips.cpp to nanomips.c
Now that everything has been converted to C code the nanomips.cpp file
has been renamed. Therefore, meson.build file is also changed.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-25-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
a0fee12944 disas/nanomips: Remove argument passing by ref
Replaced argument passing by reference with passing by address.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-24-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
e8ba8ef873 disas/nanomips: Replace Cpp enums for C enums
Change enums to typedef enums to keep naming clear.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-23-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
39399c381d disas/nanomips: Replace exception handling
Since there's no support for exception handling in C, the try-catch
blocks have been deleted, and throw clauses are replaced. When a runtime
error happens, we're printing out the error message. Disassembling of
the current instruction interrupts. This behavior is achieved by adding
sigsetjmp() to discard further disassembling after the error message
prints and by adding the siglongjmp() function to imitate throwing an
error. The goal was to maintain the same output as it was.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-22-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
3f2aec0778 disas/nanomips: Expand Dis_info struct
This patch expands the Dis_info struct, which should hold the
necessary data for handling runtime errors. Fields fprintf_func and
stream are in charge of error printing. Field buf enables the use of
sigsetjmp() and siglongjmp() functions. Support for runtime error
handling will be added later.

We're filling Dis_info at the entrance of the nanoMIPS disassembler,
i.e. print_insn_nanomips. Next, we're adding that information as an
argument wherever we need to.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-21-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
49ec1c98a3 disas/nanomips: Remove function overloading
Disassemble function that calls the other variant of it is deleted.
Where it is called, now we're directly calling the other implementation.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-20-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
22e7b52acd disas/nanomips: Prevent memory leaking
g_autofree attribute is added for every dynamically allocated string to
prevent memory leaking.

The implementation of the several functions that work with dynamically
allocated strings is slightly changed so we can add those attributes.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-19-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
043dc73cbc disas/nanomips: Remove CPR function
CPR functions has been removed.

Before this patch, we'd been calling img_format twice, the first time
through the CPR function to get an appropriate string and the second
time to print that formatted string. There's no more need for that.
Therefore, calls to CPR are removed, and now we're directly printing
"CP" and integer value instead.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-18-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
4066c152b3 disas/nanomips: Remove IMMEDIATE functions
Both versions of IMMEDIATE functions have been removed.

Before this patch, we'd been calling img_format twice, the first time
through the IMMEDIATE to get an appropriate string and the second time
to print that string. There's no more need for that. Therefore, calls to
IMMEDIATE are removed, and now we're directly printing the integer
values instead.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-17-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
7def8a4b93 disas/nanomips: Replace std::string type
The return type of typedef disassembly_function is changed to char *
instead of std::string. Therefore, for every particular
disassembly_function function signature is changed.
For example:
- static std::string ABS_D(uint64 instruction, img_address m_pc) {...}
is replaced with
- static char *ABS_D(uint64 instruction, img_address m_pc) {...}

Every helper function used to return std::string is changed to return
const char * or char *. Where the return value points to a static string
that the caller must not free, the return type is const char *. If a
function allocates memory and the caller is required to free it, the
return type is a char *. This applies to the following functions:
img_format, to_string, GPR, save_restore_list, FPR, etc.

Now that we replaced every std::string for const char * or char *, it is
possible to delete multiple versions of the img_format function. The
general version:
- static char *img_format(const char *format, ...) {...}
can handle all string formatting, so others have been deleted.

Where necessary, strings are dynamically allocated with g_strjoinv,
g_strdup, g_strdup_vprintf, and g_strdup_printf. Memory leaking will be
prevented later.

String concatenation in the save_restore_list() function is handled
using g_strjoinv() function instead of += operator.

The type of the "dis" parameter in the Disassemble function is changed
- from std::string &
- to char **

Without applying all of these changes, the nanomips disassembler may be
buildable but can't produce the appropriate output, so all of them are
made together.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-16-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
afc47e07e5 disas/nanomips: Delete wrapper functions
Following functions just wrap the decode_gpr_gpr3() function:
- encode_rs3_and_check_rs3_ge_rt3()
- encode_rs3_and_check_rs3_lt_rt3()
Therefore those have been deleted. Calls to these two functions have
been replaced with calls to decode_gpr_gpr3.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-15-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
b5cc052894 disas/nanomips: Delete copy functions
Functions that have just one parameter and simply return it have been
deleted. Calls to these functions have been replaced with the argument
itself.

We're deleting following functions:
- both versions of copy()
- encode_s_from_address()
- encode_u_from_address()
- encode_lsb_from_pos_and_size()

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-14-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
912c95b4fa disas/nanomips: Remove #include <sstream>
<sstream> is a C++ library and it's not used by disassembler.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-13-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
1a1cc52a88 disas/nanomips: Delete nanomips.h
Header file nanomips.h has been deleted for the nanomips disassembler to
stay consistent with the rest of the disassemblers which don't include
extra header files.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-12-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
f1cb3bdbc7 disas/nanomips: Move typedefs etc to nanomips.cpp
The following is moved from the nanomips.h to nanomips.cpp file:
- #include line
- typedefs
- enums
- definition of the Pool struct.
Header file nanomips.h will be deleted to be consistent with the rest of
the disas/ code.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-11-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
beebf65bec disas/nanomips: Remove NMD class
NMD class has been deleted. The following methods are now declared as
static functions:
- public NMD::Disassemble method
- private NMD::Disassemble method
- private NMD::extract_op_code_value helper method

Also, the implementation of the print_insn_nanomips function and
nanomips_dis function is moved to the end of the nanomips.cpp file,
right after the implementation of the Disassemble function.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-10-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
a146549034 disas/nanomips: Remove Pool tables from the class
Pool tables are no longer declared as static fields of the NMD
class but as global static const variables. Pool struct is defined
outside of the class.

The NMD::Disassemble method is using the MAJOR Pool table variable, so
its implementation is moved to the end of the nanomips.cpp file,
right after the initialization of the MAJOR Pool table.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-9-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
8d416f6b45 disas/nanomips: Remove disasm methods from class
NMD class methods with the disassembly_function type like
NMD::ABS_D, NMD::ABS_S, etc. are removed from the class. They're now
declared global static functions. Therefore, typedef of the function
pointer, disassembly_function is defined outside of the class.

Now that disassembly_function type functions are not part of the NMD
class we can't access them using the this pointer. Thus, the use of
the this pointer has been deleted.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-8-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
655fc22f1b disas/nanomips: Remove __cond methods from class
NMD class methods with the conditional_function type like
NMD::ADDIU_32__cond, NMD::ADDIU_RS5__cond, etc. are removed from the NMD
class. They're now declared global static functions. Therefore, typedef
of the function pointer, conditional_function is defined outside of the
class.

Now that conditional_function type functions are not part of the NMD
class we can't access them using the this pointer. Thus, the use of
the this pointer has been deleted.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-7-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
2dc0c175df disas/nanomips: Remove helper methods from class
Helper methods from NMD class like NMD::renumber_registers,
NMD::decode_gpr_gpr4... etc. are removed from the class. They're now
declared global static functions.

Following helper methods have been deleted because they're not used by
the nanomips disassembler:
- NMD::encode_msbd_from_pos_and_size,
- NMD::encode_s_from_s_hi,
- NMD::neg_copy

Global functions used by those methods:
- nanomips_dis
- sign_extend
- extract_bits
have also been defined as static global functions.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-6-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
9972c8fa7c disas/nanomips: Delete NMD class second field
We're deleting the m_pc field of the NMD class. It's now part of the
Dis_info struct that this patch introduces. Currently, the Dis_info
struct has just one field, m_pc, which we need for address calculation
in the ADDRESS function.

We're filling Dis_info at the entrance of the nanoMIPS disassembler.
I.e. print_insn_nanomips. Next, we're adding that information as an
argument wherever we need to.

Since NMD class now has no more fields, the NMD constructor is
also deleted.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-5-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
0c2a3b43a1 disas/nanomips: Delete NMD class field
The m_requested_instruction_categories field always has the same value,
ALL_ATTRIBUTES. The only use of that field is within the if statement.
When replaced with a specific value, the if statement is always false,
so it has been removed.

Now, when the only use of the m_requested_instruction_categories field
is removed, we can delete the field declaration and initialization in
the NMD class. Also, we're changing the way of the construction of the
NMD object in the nanomips_dis function.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-4-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
bfffba15b2 disas/nanomips: Extract enums out of the NMD class
Definitions of enums TABLE_ENTRY_TYPE and TABLE_ATTRIBUTE_TYPE are moved
out of the NMD class. The main goal is to remove NMD class completely.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-3-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Milica Lazarevic
c52316925c disas/nanomips: Remove namespace img
Since there's no namespace feature in C, namespace img has been replaced
with adding the prefix "img" to the namespace members.

Prefix "img" has been added to the function names of functions that used
to be wrapped in namespace img. Those are img::format() functions.
I.e. replaced img::format with the img_format.

Typedef address that used to belong to namespace img now is called
img_address.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-2-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-31 11:32:07 +01:00
Yang Liu
07f4964d17 disas/riscv.c: rvv: Add disas support for vector instructions
Tested with https://github.com/ksco/rvv-decoder-tests

Expected checkpatch errors for consistency and brevity reasons:

ERROR: line over 90 characters
ERROR: trailing statements should be on next line
ERROR: braces {} are necessary for all arms of this statement

Signed-off-by: Yang Liu <liuyang22@iscas.ac.cn>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220928051842.16207-1-liuyang22@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-10-14 14:29:50 +10:00
Alex Bennée
90bbf9d9db disas: use result of ->read_memory_func
This gets especially confusing if you start plugging in host addresses
from a trace and you wonder why the output keeps changing. Report when
read_memory_func fails instead of blindly disassembling the buffer
contents.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220929114231.583801-35-alex.bennee@linaro.org>
2022-10-06 11:53:40 +01:00
Rahul Pathak
513eb437ae target/riscv: Remove sideleg and sedeleg
sideleg and sedeleg csrs are not part of riscv isa spec
anymore, these csrs were part of N extension which
is removed from the riscv isa specification.

These commits removed all traces of these csrs from
riscv spec (https://github.com/riscv/riscv-isa-manual) -

commit f8d27f805b65 ("Remove or downgrade more references to N extension (#674)")
commit b6cade07034d ("Remove N extension chapter for now")

Signed-off-by: Rahul Pathak <rpathak@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220824145255.400040-1-rpathak@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-09-27 07:04:38 +10:00
Frédéric Pétrot
3363277525 target/riscv: fix shifts shamt value for rv128c
For rv128c shifts, a shamt of 0 is a shamt of 64, while for rv32c/rv64c
it stays 0 and is a hint instruction that does not change processor state.
For rv128c right shifts, the 6-bit shamt is in addition sign extended to
7 bits.

Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr>
Reviewed-by: Weiwei Li <liweiwei@iscas.ac.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220710110451.245567-1-frederic.petrot@univ-grenoble-alpes.fr>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-09-07 09:18:32 +02:00
Thomas Huth
2116650254 disas: Remove libvixl disassembler
The disassembly via capstone should be superiour to our old vixl
sources nowadays, so let's finally cut this old disassembler out
of the QEMU source tree.

Message-Id: <20220603164249.112459-1-thuth@redhat.com>
Tested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-07-05 10:15:49 +02:00
Thomas Huth
333f944c15 disas: Remove old libopcode ppc disassembler
Capstone should be superior to the old libopcode disassembler,
so we can drop the old file nowadays.

Message-Id: <20220505173619.488350-1-thuth@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-05-09 08:21:05 +02:00
Thomas Huth
457248a54c disas: Remove old libopcode i386 disassembler
Capstone should be superior to the old libopcode disassembler,
so we can drop the old file nowadays.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220412165836.355850-4-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-05-09 08:21:05 +02:00