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Mon Mar 30 10:25:54 1998 Alan Modra <alan@spri.levels.unisa.edu.au>

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* i386.h (i386_optab): Change second operand constraint of `mov
	sreg,reg|mem' instruction from Reg16|Mem to WordReg|WordMem to
	allow legal instructions such as `movl %gs,%esi'
This commit is contained in:
Ian Lance Taylor 1998-03-30 15:29:49 +00:00
parent 14ff3d69bc
commit eff2a090b6
2 changed files with 16 additions and 6 deletions
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6
include/opcode/ChangeLog
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@ -1,3 +1,9 @@
Mon Mar 30 10:25:54 1998 Alan Modra <alan@spri.levels.unisa.edu.au>
* i386.h (i386_optab): Change second operand constraint of `mov
sreg,reg|mem' instruction from Reg16|Mem to WordReg|WordMem to
allow legal instructions such as `movl %gs,%esi'
Fri Mar 27 18:30:52 1998 Ian Lance Taylor <ian@cygnus.com> Fri Mar 27 18:30:52 1998 Ian Lance Taylor <ian@cygnus.com>
* h8300.h: Various changes to fully bracket initializers. * h8300.h: Various changes to fully bracket initializers.

16
include/opcode/i386.h
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@ -1,5 +1,5 @@
/* i386-opcode.h -- Intel 80386 opcode table /* i386-opcode.h -- Intel 80386 opcode table
Copyright 1989, 91, 92, 93, 94, 95, 96, 1997 Free Software Foundation. Copyright 1989, 91, 92, 93, 94, 95, 96, 97, 1998 Free Software Foundation.
This file is part of GAS, the GNU Assembler, and GDB, the GNU Debugger. This file is part of GAS, the GNU Assembler, and GDB, the GNU Debugger.
@ -32,7 +32,11 @@ static const template i386_optab[] = {
{ "mov", 2, 0x88, _, DW|Modrm, { Reg, Reg|Mem, 0 } }, { "mov", 2, 0x88, _, DW|Modrm, { Reg, Reg|Mem, 0 } },
{ "mov", 2, 0xb0, _, ShortFormW, { Imm, Reg, 0 } }, { "mov", 2, 0xb0, _, ShortFormW, { Imm, Reg, 0 } },
{ "mov", 2, 0xc6, _, W|Modrm, { Imm, Reg|Mem, 0 } }, { "mov", 2, 0xc6, _, W|Modrm, { Imm, Reg|Mem, 0 } },
{ "mov", 2, 0x8c, _, D|Modrm, { SReg3|SReg2, Reg16|Mem, 0 } }, /* The next instruction accepts WordReg so that `movl %gs,%esi' can be
used to move a segment register to a 32 bit register without using
a size prefix, which works although Intel does not document it. I
think it clobbers the upper 16 bits in the 32 bit register. */
{ "mov", 2, 0x8c, _, D|Modrm, { SReg3|SReg2, WordReg|WordMem, 0 } },
/* move to/from control debug registers */ /* move to/from control debug registers */
{ "mov", 2, 0x0f20, _, D|Modrm, { Control, Reg32, 0} }, { "mov", 2, 0x0f20, _, D|Modrm, { Control, Reg32, 0} },
{ "mov", 2, 0x0f21, _, D|Modrm, { Debug, Reg32, 0} }, { "mov", 2, 0x0f21, _, D|Modrm, { Debug, Reg32, 0} },
@ -464,8 +468,8 @@ static const template i386_optab[] = {
/* protection control */ /* protection control */
{"arpl", 2, 0x63, _, Modrm, { Reg16, Reg16|Mem, 0} }, {"arpl", 2, 0x63, _, Modrm, { Reg16, Reg16|Mem, 0} },
{"lar", 2, 0x0f02, _, Modrm|ReverseRegRegmem, { WordReg|Mem, WordReg, 0} }, {"lar", 2, 0x0f02, _, Modrm|ReverseRegRegmem, { WordReg|Mem, WordReg, 0} },
{"lgdt", 1, 0x0f01, 2, Modrm, { Mem, 0, 0} }, {"lgdt", 1, 0x0f01, 2, Modrm|LinearAddress, { Mem, 0, 0} },
{"lidt", 1, 0x0f01, 3, Modrm, { Mem, 0, 0} }, {"lidt", 1, 0x0f01, 3, Modrm|LinearAddress, { Mem, 0, 0} },
{"lldt", 1, 0x0f00, 2, Modrm, { WordReg|Mem, 0, 0} }, {"lldt", 1, 0x0f00, 2, Modrm, { WordReg|Mem, 0, 0} },
{"lmsw", 1, 0x0f01, 6, Modrm, { WordReg|Mem, 0, 0} }, {"lmsw", 1, 0x0f01, 6, Modrm, { WordReg|Mem, 0, 0} },
{"lsl", 2, 0x0f03, _, Modrm|ReverseRegRegmem, { WordReg|Mem, WordReg, 0} }, {"lsl", 2, 0x0f03, _, Modrm|ReverseRegRegmem, { WordReg|Mem, WordReg, 0} },
@ -943,9 +947,9 @@ static const seg_entry *const two_byte_segment_defaults[] = {
/* mode 0 */ /* mode 0 */
&ds, &ds, &ds, &ds, &ss, &ds, &ds, &ds, &ds, &ds, &ds, &ds, &ss, &ds, &ds, &ds,
/* mode 1 */ /* mode 1 */
&ds, &ds, &ds, &ds, &ss, &ds, &ds, &ds, &ds, &ds, &ds, &ds, &ss, &ss, &ds, &ds,
/* mode 2 */ /* mode 2 */
&ds, &ds, &ds, &ds, &ss, &ds, &ds, &ds, &ds, &ds, &ds, &ds, &ss, &ss, &ds, &ds,
/* mode 3 --- not a memory reference; never referenced */ /* mode 3 --- not a memory reference; never referenced */
}; };