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* i386.h: Revert last patch for the NON_BROKEN_OPCODES cases.

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This commit is contained in:
Ian Lance Taylor 1997-04-05 18:15:32 +00:00
parent c8cf7e1737
commit c0d7b5346d
2 changed files with 18 additions and 8 deletions
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4
include/opcode/ChangeLog
View File

@ -1,3 +1,7 @@
Sat Apr 5 13:14:05 1997 Ian Lance Taylor <ian@cygnus.com>
* i386.h: Revert last patch for the NON_BROKEN_OPCODES cases.
Fri Apr 4 11:46:11 1997 Doug Evans <dje@canuck.cygnus.com>
* cgen.h: New file.

22
include/opcode/i386.h
View File

@ -17,6 +17,12 @@ You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* The NON_BROKEN_OPCODES cases use the operands in the reverse order
from that documented in the Intel manuals. The opcode values are
such that they actually generate different instructions. These
values must not be changed, as existing code depends upon the
arguably erroneous behaviour. */
static const template i386_optab[] = {
#define _ None
@ -522,7 +528,7 @@ static const template i386_optab[] = {
/* comparison (without pop) */
{"fcom", 1, 0xd8d0, _, ShortForm, { FloatReg, 0, 0} },
{"fcoms", 1, 0xd8, 2, Modrm, { Mem, 0, 0} }, /* compare %st0, mem float */
{"ficoml", 1, 0xda, 2, Modrm, { Mem, 0, 0} }, /* compare %st0, mem word */
{"ficoml", 1, 0xda, 2, Modrm, { Mem, 0, 0} }, /* compare %st0, mem word */
{"fcoml", 1, 0xdc, 2, Modrm, { Mem, 0, 0} }, /* compare %st0, mem double */
{"fcoml", 1, 0xd8d0, _, ShortForm, { FloatReg, 0, 0} },
{"ficoms", 1, 0xde, 2, Modrm, { Mem, 0, 0} }, /* compare %st0, mem dword */
@ -530,7 +536,7 @@ static const template i386_optab[] = {
/* comparison (with pop) */
{"fcomp", 1, 0xd8d8, _, ShortForm, { FloatReg, 0, 0} },
{"fcomps", 1, 0xd8, 3, Modrm, { Mem, 0, 0} }, /* compare %st0, mem float */
{"ficompl", 1, 0xda, 3, Modrm, { Mem, 0, 0} }, /* compare %st0, mem word */
{"ficompl", 1, 0xda, 3, Modrm, { Mem, 0, 0} }, /* compare %st0, mem word */
{"fcompl", 1, 0xdc, 3, Modrm, { Mem, 0, 0} }, /* compare %st0, mem double */
{"fcompl", 1, 0xd8d8, _, ShortForm, { FloatReg, 0, 0} },
{"ficomps", 1, 0xde, 3, Modrm, { Mem, 0, 0} }, /* compare %st0, mem dword */
@ -584,7 +590,7 @@ static const template i386_optab[] = {
#ifdef NON_BROKEN_OPCODES
{"fsubp", 2, 0xdee8, _, ShortForm, { FloatAcc, FloatReg, 0} },
#else
{"fsubp", 2, 0xdee8, _, ShortForm, { FloatAcc, FloatReg, 0} },
{"fsubp", 2, 0xdee0, _, ShortForm, { FloatAcc, FloatReg, 0} },
#endif
{"fsubp", 0, 0xdee9, _, NoModrm, { 0, 0, 0} },
{"fsubs", 1, 0xd8, 4, Modrm, { Mem, 0, 0} },
@ -606,7 +612,7 @@ static const template i386_optab[] = {
#ifdef NON_BROKEN_OPCODES
{"fsubrp", 2, 0xdee0, _, ShortForm, { FloatAcc, FloatReg, 0} },
#else
{"fsubrp", 2, 0xdee0, _, ShortForm, { FloatAcc, FloatReg, 0} },
{"fsubrp", 2, 0xdee8, _, ShortForm, { FloatAcc, FloatReg, 0} },
#endif
{"fsubrp", 0, 0xdee1, _, NoModrm, { 0, 0, 0} },
{"fsubrs", 1, 0xd8, 5, Modrm, { Mem, 0, 0} },
@ -643,7 +649,7 @@ static const template i386_optab[] = {
#ifdef NON_BROKEN_OPCODES
{"fdivp", 2, 0xdef8, _, ShortForm, { FloatAcc, FloatReg, 0} },
#else
{"fdivp", 2, 0xdef8, _, ShortForm, { FloatAcc, FloatReg, 0} },
{"fdivp", 2, 0xdef0, _, ShortForm, { FloatAcc, FloatReg, 0} },
#endif
{"fdivp", 0, 0xdef9, _, NoModrm, { 0, 0, 0} },
{"fdivs", 1, 0xd8, 6, Modrm, { Mem, 0, 0} },
@ -665,7 +671,7 @@ static const template i386_optab[] = {
#ifdef NON_BROKEN_OPCODES
{"fdivrp", 2, 0xdef0, _, ShortForm, { FloatAcc, FloatReg, 0} },
#else
{"fdivrp", 2, 0xdef0, _, ShortForm, { FloatAcc, FloatReg, 0} },
{"fdivrp", 2, 0xdef8, _, ShortForm, { FloatAcc, FloatReg, 0} },
#endif
{"fdivrp", 0, 0xdef1, _, NoModrm, { 0, 0, 0} },
{"fdivrs", 1, 0xd8, 7, Modrm, { Mem, 0, 0} },
@ -835,8 +841,8 @@ static const reg_entry i386_regtab[] = {
/* float registers */
{"st(0)", FloatReg|FloatAcc, 0},
{"st", FloatReg|FloatAcc, 0},
{"st(1)", FloatReg, 1}, {"st(2)", FloatReg, 2},
{"st(3)", FloatReg, 3}, {"st(4)", FloatReg, 4}, {"st(5)", FloatReg, 5},
{"st(1)", FloatReg, 1}, {"st(2)", FloatReg, 2},
{"st(3)", FloatReg, 3}, {"st(4)", FloatReg, 4}, {"st(5)", FloatReg, 5},
{"st(6)", FloatReg, 6}, {"st(7)", FloatReg, 7}
};