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Initial submission of the PCem-Experimental source code.

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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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117
src/x86_ops_bitscan.h Normal file
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#define BS_common(start, end, dir, dest, time) \
flags_rebuild(); \
if (temp) \
{ \
int c; \
flags &= ~Z_FLAG; \
for (c = start; c != end; c += dir) \
{ \
CLOCK_CYCLES(time); \
if (temp & (1 << c)) \
{ \
dest = c; \
break; \
} \
} \
} \
else \
flags |= Z_FLAG;
static int opBSF_w_a16(uint32_t fetchdat)
{
uint16_t temp;
fetch_ea_16(fetchdat);
temp = geteaw(); if (abrt) return 1;
BS_common(0, 16, 1, cpu_state.regs[reg].w, (is486) ? 1 : 3);
CLOCK_CYCLES((is486) ? 6 : 10);
return 0;
}
static int opBSF_w_a32(uint32_t fetchdat)
{
uint16_t temp;
fetch_ea_32(fetchdat);
temp = geteaw(); if (abrt) return 1;
BS_common(0, 16, 1, cpu_state.regs[reg].w, (is486) ? 1 : 3);
CLOCK_CYCLES((is486) ? 6 : 10);
return 0;
}
static int opBSF_l_a16(uint32_t fetchdat)
{
uint32_t temp;
fetch_ea_16(fetchdat);
temp = geteal(); if (abrt) return 1;
BS_common(0, 32, 1, cpu_state.regs[reg].l, (is486) ? 1 : 3);
CLOCK_CYCLES((is486) ? 6 : 10);
return 0;
}
static int opBSF_l_a32(uint32_t fetchdat)
{
uint32_t temp;
fetch_ea_32(fetchdat);
temp = geteal(); if (abrt) return 1;
BS_common(0, 32, 1, cpu_state.regs[reg].l, (is486) ? 1 : 3);
CLOCK_CYCLES((is486) ? 6 : 10);
return 0;
}
static int opBSR_w_a16(uint32_t fetchdat)
{
uint16_t temp;
fetch_ea_16(fetchdat);
temp = geteaw(); if (abrt) return 1;
BS_common(15, -1, -1, cpu_state.regs[reg].w, 3);
CLOCK_CYCLES((is486) ? 6 : 10);
return 0;
}
static int opBSR_w_a32(uint32_t fetchdat)
{
uint16_t temp;
fetch_ea_32(fetchdat);
temp = geteaw(); if (abrt) return 1;
BS_common(15, -1, -1, cpu_state.regs[reg].w, 3);
CLOCK_CYCLES((is486) ? 6 : 10);
return 0;
}
static int opBSR_l_a16(uint32_t fetchdat)
{
uint32_t temp;
fetch_ea_16(fetchdat);
temp = geteal(); if (abrt) return 1;
BS_common(31, -1, -1, cpu_state.regs[reg].l, 3);
CLOCK_CYCLES((is486) ? 6 : 10);
return 0;
}
static int opBSR_l_a32(uint32_t fetchdat)
{
uint32_t temp;
fetch_ea_32(fetchdat);
temp = geteal(); if (abrt) return 1;
BS_common(31, -1, -1, cpu_state.regs[reg].l, 3);
CLOCK_CYCLES((is486) ? 6 : 10);
return 0;
}