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More accurate timing for INT, IRET, CALL far, RET far and JMP far.

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This commit is contained in:
TomW 2016-02-06 18:08:10 +00:00
commit 94f33aa873
9 changed files with 290 additions and 43 deletions
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10
src/x86_ops_ret.h
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@ -18,7 +18,7 @@
if (abrt) return 1; \
if (stack32) ESP += 4 + stack_offset; \
else SP += 4 + stack_offset; \
CLOCK_CYCLES(is486 ? 13 : 18);
cycles -= timing_retf_rm;
#define RETF_a32(stack_offset) \
if ((msw&1) && !(eflags&VM_FLAG)) \
@ -40,7 +40,7 @@
if (abrt) return 1; \
if (stack32) ESP += 8 + stack_offset; \
else SP += 8 + stack_offset; \
CLOCK_CYCLES(is486 ? 13 : 18);
cycles -= timing_retf_rm;
static int opRETF_a16(uint32_t fetchdat)
{
@ -102,9 +102,9 @@ static int opIRET_286(uint32_t fetchdat)
SP += 6;
}
loadcs(new_cs);
cycles -= timing_iret_rm;
}
flags_extract();
CLOCK_CYCLES(is486 ? 15 : 22);
nmi_enable = 1;
CPU_BLOCK_END();
return abrt;
@ -142,9 +142,9 @@ static int opIRET(uint32_t fetchdat)
SP += 6;
}
loadcs(new_cs);
cycles -= timing_iret_rm;
}
flags_extract();
CLOCK_CYCLES(is486 ? 15 : 22);
nmi_enable = 1;
CPU_BLOCK_END();
return abrt;
@ -184,9 +184,9 @@ static int opIRETD(uint32_t fetchdat)
SP += 12;
}
loadcs(new_cs);
cycles -= timing_iret_rm;
}
flags_extract();
CLOCK_CYCLES(is486 ? 15 : 22);
nmi_enable = 1;
CPU_BLOCK_END();
return abrt;