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re PR libgcj/22084 (Divide_1 test case hangs)

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2005-09-08  Andrew Haley  <aph@redhat.com>

	PR java/22084
	* include/i386-signal.h (HANDLE_DIVIDE_OVERFLOW): Bump IP by 1 if
	R/M field in instruction is 100.

From-SVN: r104094
This commit is contained in:
Andrew Haley 2005-09-09 13:05:20 +00:00 committed by Andrew Haley
parent 7ce7896c39
commit ddef717308
2 changed files with 18 additions and 5 deletions
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6
libjava/ChangeLog
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@ -1,3 +1,9 @@
2005-09-08 Andrew Haley <aph@redhat.com>
PR java/22084
* include/i386-signal.h (HANDLE_DIVIDE_OVERFLOW): Bump IP by 1 if
R/M field in instruction is 100.
2005-09-08 Thomas Fitzsimmons <fitzsim@redhat.com>
PR libgcj/23761

17
libjava/include/i386-signal.h
View File

@ -64,18 +64,25 @@ do \
if (_regs->eax == 0x80000000 \
&& ((_modrm >> 3) & 7) == 7) /* Signed divide */ \
{ \
unsigned char _rm = _modrm & 7; \
_regs->edx = 0; /* the remainder is zero */ \
switch (_modrm >> 6) \
{ \
case 0: \
if ((_modrm & 7) == 5) \
_eip += 4; \
case 0: /* register indirect */ \
if (_rm == 5) /* 32-bit displacement */ \
_eip += 4; \
if (_rm == 4) /* A SIB byte follows the ModR/M byte */ \
_eip += 1; \
break; \
case 1: \
case 1: /* register indirect + 8-bit displacement */ \
_eip += 1; \
if (_rm == 4) /* A SIB byte follows the ModR/M byte */ \
_eip += 1; \
break; \
case 2: \
case 2: /* register indirect + 32-bit displacement */ \
_eip += 4; \
if (_rm == 4) /* A SIB byte follows the ModR/M byte */ \
_eip += 1; \
break; \
case 3: \
break; \