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Initial submission of the PCem-Experimental source code.

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This commit is contained in:
OBattler
2016-06-26 00:34:39 +02:00
parent 09d7c4384f
commit fd2a5bc9f5
610 changed files with 184352 additions and 0 deletions
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190
src/x86_ops_flag.h Normal file
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static int opCMC(uint32_t fetchdat)
{
flags_rebuild();
flags ^= C_FLAG;
CLOCK_CYCLES(2);
return 0;
}
static int opCLC(uint32_t fetchdat)
{
flags_rebuild();
flags &= ~C_FLAG;
CLOCK_CYCLES(2);
return 0;
}
static int opCLD(uint32_t fetchdat)
{
flags &= ~D_FLAG;
CLOCK_CYCLES(2);
return 0;
}
static int opCLI(uint32_t fetchdat)
{
if (!IOPLp)
{
x86gpf(NULL,0);
return 1;
}
else
flags &= ~I_FLAG;
CPU_BLOCK_END();
CLOCK_CYCLES(3);
return 0;
}
static int opSTC(uint32_t fetchdat)
{
flags_rebuild();
flags |= C_FLAG;
CLOCK_CYCLES(2);
return 0;
}
static int opSTD(uint32_t fetchdat)
{
flags |= D_FLAG;
CLOCK_CYCLES(2);
return 0;
}
static int opSTI(uint32_t fetchdat)
{
if (!IOPLp)
{
x86gpf(NULL,0);
return 1;
}
else
flags |= I_FLAG;
CPU_BLOCK_END();
CLOCK_CYCLES(2);
return 0;
}
static int opSAHF(uint32_t fetchdat)
{
flags_rebuild();
flags = (flags & 0xff00) | (AH & 0xd5) | 2;
CLOCK_CYCLES(3);
codegen_flags_changed = 0;
return 0;
}
static int opLAHF(uint32_t fetchdat)
{
flags_rebuild();
AH = flags & 0xff;
CLOCK_CYCLES(3);
return 0;
}
static int opPUSHF(uint32_t fetchdat)
{
if ((eflags & VM_FLAG) && (IOPL < 3))
{
x86gpf(NULL,0);
return 1;
}
flags_rebuild();
PUSH_W(flags);
CLOCK_CYCLES(4);
return abrt;
}
static int opPUSHFD(uint32_t fetchdat)
{
uint16_t tempw;
if ((eflags & VM_FLAG) && (IOPL < 3))
{
x86gpf(NULL, 0);
return 1;
}
if (CPUID) tempw = eflags & 0x24;
else tempw = eflags & 4;
flags_rebuild();
PUSH_L(flags | (tempw << 16));
CLOCK_CYCLES(4);
return abrt;
}
static int opPOPF_286(uint32_t fetchdat)
{
uint16_t tempw;
if ((eflags & VM_FLAG) && (IOPL < 3))
{
x86gpf(NULL, 0);
return 1;
}
tempw = POP_W(); if (abrt) return 1;
if (!(msw & 1)) flags = (flags & 0x7000) | (tempw & 0x0fd5) | 2;
else if (!(CPL)) flags = (tempw & 0x7fd5) | 2;
else if (IOPLp) flags = (flags & 0x3000) | (tempw & 0x4fd5) | 2;
else flags = (flags & 0x3200) | (tempw & 0x4dd5) | 2;
flags_extract();
CLOCK_CYCLES(5);
codegen_flags_changed = 0;
return 0;
}
static int opPOPF(uint32_t fetchdat)
{
uint16_t tempw;
if ((eflags & VM_FLAG) && (IOPL < 3))
{
x86gpf(NULL, 0);
return 1;
}
tempw = POP_W(); if (abrt) return 1;
if (!(CPL) || !(msw & 1)) flags = (tempw & 0x7fd5) | 2;
else if (IOPLp) flags = (flags & 0x3000) | (tempw & 0x4fd5) | 2;
else flags = (flags & 0x3200) | (tempw & 0x4dd5) | 2;
flags_extract();
CLOCK_CYCLES(5);
codegen_flags_changed = 0;
return 0;
}
static int opPOPFD(uint32_t fetchdat)
{
uint32_t templ;
if ((eflags & VM_FLAG) && (IOPL < 3))
{
x86gpf(NULL, 0);
return 1;
}
templ = POP_L(); if (abrt) return 1;
if (!(CPL) || !(msw & 1)) flags = (templ & 0x7fd5) | 2;
else if (IOPLp) flags = (flags & 0x3000) | (templ & 0x4fd5) | 2;
else flags = (flags & 0x3200) | (templ & 0x4dd5) | 2;
templ &= is486 ? 0x240000 : 0;
templ |= ((eflags&3) << 16);
if (CPUID) eflags = (templ >> 16) & 0x27;
else if (is486) eflags = (templ >> 16) & 7;
else eflags = (templ >> 16) & 3;
flags_extract();
CLOCK_CYCLES(5);
codegen_flags_changed = 0;
return 0;
}