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2007-03-28  H.J. Lu  <hongjiu.lu@intel.com>

	* config/tc-i386.c (build_modrm_byte): For instructions with 2
	register operands, encode destination in i.rm.regmem if its
	RegMem bit is set.

opcodes/

2007-03-28  H.J. Lu  <hongjiu.lu@intel.com>

	* i386-opc.c (i386_optab): Change InvMem to RegMem for mov and
	movq.  Remove InvMem from sldt, smsw and str.

	* i386-opc.h (InvMem): Renamed to ...
	(RegMem): Update comments.
	(AnyMem): Remove InvMem.
drow-reverse-20070409-branch
H.J. Lu 20 years ago
parent
947844a311
commit
e72cf3ec8e
5 changed files with 37 additions and 23 deletions
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  1. 6
      gas/ChangeLog
  2. 2
      gas/config/tc-i386.c
  3. 12
      opcodes/ChangeLog
  4. 26
      opcodes/i386-opc.c
  5. 14
      opcodes/i386-opc.h

6
gas/ChangeLog
View File

@ -1,3 +1,9 @@
2007-03-28 H.J. Lu <hongjiu.lu@intel.com>
* config/tc-i386.c (build_modrm_byte): For instructions with 2
register operands, encode destination in i.rm.regmem if its
RegMem bit is set.
2007-03-28 Richard Sandiford <richard@codesourcery.com>
Phil Edwards <phil@codesourcery.com>

2
gas/config/tc-i386.c
View File

@ -3412,7 +3412,7 @@ build_modrm_byte (void)
destination operand, then we assume the source operand may
sometimes be a memory operand and so we need to store the
destination in the i.rm.reg field. */
if ((i.tm.operand_types[dest] & AnyMem) == 0)
if ((i.tm.operand_types[dest] & (AnyMem | RegMem)) == 0)
{
i.rm.reg = i.op[dest].regs->reg_num;
i.rm.regmem = i.op[source].regs->reg_num;

12
opcodes/ChangeLog
View File

@ -1,6 +1,14 @@
2007-03-28 H.J. Lu <hongjiu.lu@intel.com>
* i386-opc.c (i386_optab): Change InvMem to RegMem for mov and
movq. Remove InvMem from sldt, smsw and str.
* i386-opc.h (InvMem): Renamed to ...
(RegMem): Update comments.
(AnyMem): Remove InvMem.
2007-03-27 Paul Brook <paul@codesourcery.com>
opcodes/
* arm-dis.c (thumb_opcodes): Add entry for undefined insns (0xbe??).
2007-03-24 Paul Brook <paul@codesourcery.com>
@ -9,7 +17,7 @@
(print_insn_coprocessor): Handle %<bitfield>x.
2007-03-24 Paul Brook <paul@codesourcery.com>
Mark Shinwell <shinwell@codesourcery.com>
Mark Shinwell <shinwell@codesourcery.com>
* arm-dis.c (arm_opcodes): Print SRS base register.

26
opcodes/i386-opc.c
View File

@ -63,9 +63,9 @@ const template i386_optab[] =
size prefix. When moving to a 32 bit register, the upper 16 bits
are set to an implementation defined value (on the Pentium Pro,
the implementation defined value is zero). */
{ "mov", 2, 0x8c, X, 0, wl_Suf|Modrm, { SReg2, WordReg|InvMem, 0 } },
{ "mov", 2, 0x8c, X, 0, wl_Suf|Modrm, { SReg2, WordReg|RegMem, 0 } },
{ "mov", 2, 0x8c, X, 0, w_Suf|Modrm|IgnoreSize, { SReg2, WordMem, 0 } },
{ "mov", 2, 0x8c, X, Cpu386, wl_Suf|Modrm, { SReg3, WordReg|InvMem, 0 } },
{ "mov", 2, 0x8c, X, Cpu386, wl_Suf|Modrm, { SReg3, WordReg|RegMem, 0 } },
{ "mov", 2, 0x8c, X, Cpu386, w_Suf|Modrm|IgnoreSize, { SReg3, WordMem, 0 } },
{ "mov", 2, 0x8e, X, 0, wl_Suf|Modrm|IgnoreSize, { WordReg, SReg2, 0 } },
{ "mov", 2, 0x8e, X, 0, w_Suf|Modrm|IgnoreSize, { WordMem, SReg2, 0 } },
@ -73,11 +73,11 @@ const template i386_optab[] =
{ "mov", 2, 0x8e, X, Cpu386, w_Suf|Modrm|IgnoreSize, { WordMem, SReg3, 0 } },
/* Move to/from control debug registers. In the 16 or 32bit modes they are 32bit. In the 64bit
mode they are 64bit.*/
{ "mov", 2, 0x0f20, X, Cpu386|CpuNo64, l_Suf|D|Modrm|IgnoreSize,{ Control, Reg32|InvMem, 0} },
{ "mov", 2, 0x0f20, X, Cpu64, q_Suf|D|Modrm|IgnoreSize|NoRex64,{ Control, Reg64|InvMem, 0} },
{ "mov", 2, 0x0f21, X, Cpu386|CpuNo64, l_Suf|D|Modrm|IgnoreSize,{ Debug, Reg32|InvMem, 0} },
{ "mov", 2, 0x0f21, X, Cpu64, q_Suf|D|Modrm|IgnoreSize|NoRex64,{ Debug, Reg64|InvMem, 0} },
{ "mov", 2, 0x0f24, X, Cpu386|CpuNo64, l_Suf|D|Modrm|IgnoreSize, { Test, Reg32|InvMem, 0} },
{ "mov", 2, 0x0f20, X, Cpu386|CpuNo64, l_Suf|D|Modrm|IgnoreSize,{ Control, Reg32|RegMem, 0} },
{ "mov", 2, 0x0f20, X, Cpu64, q_Suf|D|Modrm|IgnoreSize|NoRex64,{ Control, Reg64|RegMem, 0} },
{ "mov", 2, 0x0f21, X, Cpu386|CpuNo64, l_Suf|D|Modrm|IgnoreSize,{ Debug, Reg32|RegMem, 0} },
{ "mov", 2, 0x0f21, X, Cpu64, q_Suf|D|Modrm|IgnoreSize|NoRex64,{ Debug, Reg64|RegMem, 0} },
{ "mov", 2, 0x0f24, X, Cpu386|CpuNo64, l_Suf|D|Modrm|IgnoreSize, { Test, Reg32|RegMem, 0} },
{ "movabs",2, 0xa0, X, Cpu64, bwlq_Suf|D|W, { Disp64, Acc, 0 } },
{ "movabs",2, 0xb0, X, Cpu64, q_Suf|W|ShortForm, { Imm64, Reg64, 0 } },
@ -537,11 +537,11 @@ const template i386_optab[] =
{"sgdt", 1, 0x0f01, 0, Cpu64, q_Suf|Modrm|NoRex64, { LLongMem, 0, 0} },
{"sidt", 1, 0x0f01, 1, Cpu286|CpuNo64, wl_Suf|Modrm, { WordMem, 0, 0} },
{"sidt", 1, 0x0f01, 1, Cpu64, q_Suf|Modrm|NoRex64, { LLongMem, 0, 0} },
{"sldt", 1, 0x0f00, 0, Cpu286, wlq_Suf|Modrm, { WordReg|InvMem, 0, 0} },
{"sldt", 1, 0x0f00, 0, Cpu286, wlq_Suf|Modrm, { WordReg, 0, 0} },
{"sldt", 1, 0x0f00, 0, Cpu286, w_Suf|Modrm|IgnoreSize,{ ShortMem, 0, 0} },
{"smsw", 1, 0x0f01, 4, Cpu286, wlq_Suf|Modrm, { WordReg|InvMem, 0, 0} },
{"smsw", 1, 0x0f01, 4, Cpu286, wlq_Suf|Modrm, { WordReg, 0, 0} },
{"smsw", 1, 0x0f01, 4, Cpu286, w_Suf|Modrm|IgnoreSize,{ ShortMem, 0, 0} },
{"str", 1, 0x0f00, 1, Cpu286, wlq_Suf|Modrm, { WordReg|InvMem, 0, 0} },
{"str", 1, 0x0f00, 1, Cpu286, wlq_Suf|Modrm, { WordReg, 0, 0} },
{"str", 1, 0x0f00, 1, Cpu286, w_Suf|Modrm|IgnoreSize,{ ShortMem, 0, 0} },
{"verr", 1, 0x0f00, 4, Cpu286, w_Suf|Modrm|IgnoreSize,{ Reg16|ShortMem, 0, 0} },
@ -987,12 +987,12 @@ const template i386_optab[] =
{"movq", 2, 0xb0, X, Cpu64, NoSuf|W|ShortForm|Size64,{ Imm64, Reg64, 0 } },
/* The segment register moves accept Reg64 so that a segment register
can be copied to a 64 bit register, and vice versa. */
{"movq", 2, 0x8c, X, Cpu64, NoSuf|Modrm|Size64, { SReg2|SReg3, Reg64|InvMem, 0 } },
{"movq", 2, 0x8c, X, Cpu64, NoSuf|Modrm|Size64, { SReg2|SReg3, Reg64|RegMem, 0 } },
{"movq", 2, 0x8e, X, Cpu64, NoSuf|Modrm|Size64, { Reg64, SReg2|SReg3, 0 } },
/* Move to/from control debug registers. In the 16 or 32bit modes they are 32bit. In the 64bit
mode they are 64bit.*/
{"movq", 2, 0x0f20, X, Cpu64, NoSuf|D|Modrm|IgnoreSize|NoRex64|Size64,{ Control, Reg64|InvMem, 0} },
{"movq", 2, 0x0f21, X, Cpu64, NoSuf|D|Modrm|IgnoreSize|NoRex64|Size64,{ Debug, Reg64|InvMem, 0} },
{"movq", 2, 0x0f20, X, Cpu64, NoSuf|D|Modrm|IgnoreSize|NoRex64|Size64,{ Control, Reg64|RegMem, 0} },
{"movq", 2, 0x0f21, X, Cpu64, NoSuf|D|Modrm|IgnoreSize|NoRex64|Size64,{ Debug, Reg64|RegMem, 0} },
/* Real MMX instructions. */
{"packssdw", 2, 0x0f6b, X, CpuMMX, NoSuf|IgnoreSize|Modrm, { RegMMX|LongMem, RegMMX, 0 } },
{"packssdw", 2, 0x660f6b,X,CpuSSE2,NoSuf|IgnoreSize|Modrm, { RegXMM|LLongMem, RegXMM, 0 } },

14
opcodes/i386-opc.h
View File

@ -166,12 +166,12 @@ typedef struct template
#define RegXMM 0x20000000 /* XMM registers in PIII */
#define EsSeg 0x40000000 /* String insn operand with fixed es segment */
/* InvMem is for instructions with a modrm byte that only allow a
general register encoding in the i.tm.mode and i.tm.regmem fields,
eg. control reg moves. They really ought to support a memory form,
but don't, so we add an InvMem flag to the register operand to
indicate that it should be encoded in the i.tm.regmem field. */
#define InvMem 0x80000000
/* RegMem is for instructions with a modrm byte where the register
destination operand should be encoded in the mod and regmem fields.
Normally, it will be encoded in the reg field. We add a RegMem
flag to the destination register operand to indicate that it should
be encoded in the regmem field. */
#define RegMem 0x80000000
#define Reg (Reg8|Reg16|Reg32|Reg64) /* gen'l register */
#define WordReg (Reg16|Reg32|Reg64)
@ -179,7 +179,7 @@ typedef struct template
#define Imm (Imm8|Imm8S|Imm16|Imm32S|Imm32|Imm64) /* gen'l immediate */
#define EncImm (Imm8|Imm16|Imm32|Imm32S) /* Encodable gen'l immediate */
#define Disp (Disp8|Disp16|Disp32|Disp32S|Disp64) /* General displacement */
#define AnyMem (Disp8|Disp16|Disp32|Disp32S|BaseIndex|InvMem) /* General memory */
#define AnyMem (Disp8|Disp16|Disp32|Disp32S|BaseIndex) /* General memory */
/* The following aliases are defined because the opcode table
carefully specifies the allowed memory types for each instruction.
At the moment we can only tell a memory reference size by the

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