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really fix writes to byte registers

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This commit is contained in:
gbeauche 2003-11-11 00:10:39 +00:00
parent 4bce0876c0
commit d4ad77d734
1 changed files with 6 additions and 4 deletions
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10
BasiliskII/src/Unix/sigsegv.cpp
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@ -813,10 +813,12 @@ static bool ix86_skip_instruction(unsigned long * regs)
int rloc = x86_reg_map[reg];
switch (transfer_size) {
case SIZE_BYTE:
if (!has_rex && reg >= 4)
regs[rloc - 4] = (regs[rloc - 4] & ~0xff00L);
else
regs[rloc] = (regs[rloc] & ~0xffL);
if (has_rex || reg < 4)
regs[rloc] = (regs[rloc] & ~0x00ffL);
else {
rloc = x86_reg_map[reg - 4];
regs[rloc] = (regs[rloc] & ~0xff00L);
}
break;
case SIZE_WORD:
regs[rloc] = (regs[rloc] & ~0xffffL);