diff options
| author | Cui, Lili <lili.cui@intel.com> | 2023-12-28 01:06:39 +0000 |
|---|---|---|
| committer | Cui, Lili <lili.cui@intel.com> | 2023-12-28 11:14:41 +0000 |
| commit | 80d61d8d614d68a0b1932ed3a86d4cda01e5633e (patch) | |
| tree | d96a3481c4563e2fd0fee9ae049626ee9dea6053 /include/opcode | |
| parent | fcd5cdd5aeecf7eae91a402755c260bb64a0fe0f (diff) | |
| download | gdb-80d61d8d614d68a0b1932ed3a86d4cda01e5633e.zip gdb-80d61d8d614d68a0b1932ed3a86d4cda01e5633e.tar.gz gdb-80d61d8d614d68a0b1932ed3a86d4cda01e5633e.tar.bz2 | |
Support APX GPR32 with rex2 prefix
APX uses the REX2 prefix to support EGPR for map0 and map1 of legacy
instructions. We added the NoEgpr flag in i386-gen.c for instructions
that do not support EGPR.
gas/ChangeLog:
2023-12-28 Lingling Kong <lingling.kong@intel.com>
H.J. Lu <hongjiu.lu@intel.com>
Lili Cui <lili.cui@intel.com>
Lin Hu <lin1.hu@intel.com>
* config/tc-i386.c
(enum i386_error): Add unsupported_EGPR_for_addressing
and invalid_pseudo_prefix.
(struct _i386_insn): Add rex2 and rex2_encoding for
gpr32.
(cpu_arch): Add apx_f.
(is_cpu): Ditto.
(register_number): Handle RegRex2 for gpr32.
(is_apx_rex2_encoding): New func. Test rex2 prefix encoding.
(build_rex2_prefix): New func. Build legacy insn in
opcode 0/1 use gpr32 with rex2 prefix.
(establish_rex): Handle rex2 and rex2_encoding.
(optimize_encoding): Handel add r16-r31 for registers.
(md_assemble): Handle apx encoding.
(parse_insn): Handle Prefix_REX2.
(check_EgprOperands): New func. Check if Egprs operands
are valid for the instruction
(match_template): Handle Egpr operands check.
(set_rex_rex2): New func. set i.rex and i.rex2.
(build_modrm_byte): Ditto.
(output_insn): Handle rex2 2-byte prefix output.
(check_register): Handle check egpr illegal without
target apx, 64-bit mode and with rex_prefix.
* doc/c-i386.texi: Document .apx.
* testsuite/gas/i386/ilp32/x86-64-opcode-inval-intel.d: D5 valid
in 64-bit mode.
* testsuite/gas/i386/ilp32/x86-64-opcode-inval.d: Ditto.
* testsuite/gas/i386/rex-bad: Adjust rex testcase.
* testsuite/gas/i386/x86-64-opcode-inval-intel.d: Ditto.
* testsuite/gas/i386/x86-64-opcode-inval.d: Ditto.
* testsuite/gas/i386/x86-64-opcode-inval.s: Ditto.
* testsuite/gas/i386/x86-64-pseudos-bad.l: Add illegal rex2 test.
* testsuite/gas/i386/x86-64-pseudos-bad.s: Ditto.
* testsuite/gas/i386/x86-64-pseudos.d: Add rex2 test.
* testsuite/gas/i386/x86-64-pseudos.s: Ditto.
* testsuite/gas/i386/x86-64.exp: Run APX tests.
* testsuite/gas/i386/x86-64-apx-egpr-inval.l: New test.
* testsuite/gas/i386/x86-64-apx-egpr-inval.s: New test.
* testsuite/gas/i386/x86-64-apx-rex2.d: New test.
* testsuite/gas/i386/x86-64-apx-rex2.s: New test.
include/ChangeLog:
* opcode/i386.h (REX2_OPCODE): New.
(REX2_M): Ditto.
opcodes/ChangeLog:
* i386-dis.c (struct instr_info): Add erex for gpr32.
Add last_erex_prefix for rex2 prefix.
(REX2_M): Extend for gpr32.
(PREFIX_REX2): Ditto.
(PREFIX_REX2_ILLEGAL): Ditto.
(ckprefix): Ditto.
(prefix_name): Ditto.
(print_insn): Ditto.
(print_register): Ditto.
(OP_E_memory): Ditto.
(OP_REG): Ditto.
(OP_EX): Ditto.
* i386-gen.c (rex2_disallowed): Some instructions are not allowed rex2 prefix.
(process_i386_opcode_modifier): Set NoEgpr for VEX and some special instructions.
(output_i386_opcode): Handle if_entry_needs_special_handle.
* i386-init.h : Regenerated.
* i386-mnem.h : Regenerated.
* i386-opc.h (enum i386_cpu): Add CpuAPX_F.
(NoEgpr): New.
(Prefix_NoOptimize): Ditto.
(Prefix_REX2): Ditto.
(RegRex2): Ditto.
* i386-opc.tbl: Add rex2 prefix.
* i386-reg.tbl: Add egprs (r16-r31).
* i386-tbl.h: Regenerated.
Diffstat (limited to 'include/opcode')
| -rw-r--r-- | include/opcode/i386.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/opcode/i386.h b/include/opcode/i386.h index dec7652..2823d02 100644 --- a/include/opcode/i386.h +++ b/include/opcode/i386.h @@ -112,9 +112,13 @@ /* x86-64 extension prefix. */ #define REX_OPCODE 0x40 +#define REX2_OPCODE 0xd5 + /* Non-zero if OPCODE is the rex prefix. */ #define REX_PREFIX_P(opcode) (((opcode) & 0xf0) == REX_OPCODE) +/* M0 in rex2 prefix represents map0 or map1. */ +#define REX2_M 0x8 /* Indicates 64 bit operand size. */ #define REX_W 8 /* High extension to reg field of modrm byte. */ |