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pcem/includes/private/cpu/x86_ops_prefix.h
Michael J. Manley bed5fced7b [no ci] Format Changes
2022-06-23 11:26:13 -07:00

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#ifndef _X86_OPS_PREFIX_H_
#define _X86_OPS_PREFIX_H_
#define op_seg(name, seg, opcode_table, normal_opcode_table) \
static int op##name##_w_a16(uint32_t fetchdat) { \
fetchdat = fastreadl(cs + cpu_state.pc); \
if (cpu_state.abrt) \
return 1; \
cpu_state.pc++; \
\
cpu_state.ea_seg = &seg; \
cpu_state.ssegs = 1; \
CLOCK_CYCLES(4); \
PREFETCH_PREFIX(); \
\
if (opcode_table[fetchdat & 0xff]) \
return opcode_table[fetchdat & 0xff](fetchdat >> 8); \
return normal_opcode_table[fetchdat & 0xff](fetchdat >> 8); \
} \
\
static int op##name##_l_a16(uint32_t fetchdat) { \
fetchdat = fastreadl(cs + cpu_state.pc); \
if (cpu_state.abrt) \
return 1; \
cpu_state.pc++; \
\
cpu_state.ea_seg = &seg; \
cpu_state.ssegs = 1; \
CLOCK_CYCLES(4); \
PREFETCH_PREFIX(); \
\
if (opcode_table[(fetchdat & 0xff) | 0x100]) \
return opcode_table[(fetchdat & 0xff) | 0x100](fetchdat >> 8); \
return normal_opcode_table[(fetchdat & 0xff) | 0x100](fetchdat >> 8); \
} \
\
static int op##name##_w_a32(uint32_t fetchdat) { \
fetchdat = fastreadl(cs + cpu_state.pc); \
if (cpu_state.abrt) \
return 1; \
cpu_state.pc++; \
\
cpu_state.ea_seg = &seg; \
cpu_state.ssegs = 1; \
CLOCK_CYCLES(4); \
PREFETCH_PREFIX(); \
\
if (opcode_table[(fetchdat & 0xff) | 0x200]) \
return opcode_table[(fetchdat & 0xff) | 0x200](fetchdat >> 8); \
return normal_opcode_table[(fetchdat & 0xff) | 0x200](fetchdat >> 8); \
} \
\
static int op##name##_l_a32(uint32_t fetchdat) { \
fetchdat = fastreadl(cs + cpu_state.pc); \
if (cpu_state.abrt) \
return 1; \
cpu_state.pc++; \
\
cpu_state.ea_seg = &seg; \
cpu_state.ssegs = 1; \
CLOCK_CYCLES(4); \
PREFETCH_PREFIX(); \
\
if (opcode_table[(fetchdat & 0xff) | 0x300]) \
return opcode_table[(fetchdat & 0xff) | 0x300](fetchdat >> 8); \
return normal_opcode_table[(fetchdat & 0xff) | 0x300](fetchdat >> 8); \
}
op_seg(CS, cpu_state.seg_cs, x86_opcodes, x86_opcodes) op_seg(DS, cpu_state.seg_ds, x86_opcodes, x86_opcodes)
op_seg(ES, cpu_state.seg_es, x86_opcodes, x86_opcodes) op_seg(FS, cpu_state.seg_fs, x86_opcodes, x86_opcodes) op_seg(
GS, cpu_state.seg_gs, x86_opcodes, x86_opcodes) op_seg(SS, cpu_state.seg_ss, x86_opcodes, x86_opcodes)
op_seg(CS_REPE, cpu_state.seg_cs, x86_opcodes_REPE,
x86_opcodes) op_seg(DS_REPE, cpu_state.seg_ds, x86_opcodes_REPE,
x86_opcodes) op_seg(ES_REPE, cpu_state.seg_es, x86_opcodes_REPE, x86_opcodes)
op_seg(FS_REPE, cpu_state.seg_fs, x86_opcodes_REPE,
x86_opcodes) op_seg(GS_REPE, cpu_state.seg_gs, x86_opcodes_REPE,
x86_opcodes) op_seg(SS_REPE, cpu_state.seg_ss, x86_opcodes_REPE, x86_opcodes)
op_seg(CS_REPNE, cpu_state.seg_cs, x86_opcodes_REPNE,
x86_opcodes) op_seg(DS_REPNE, cpu_state.seg_ds, x86_opcodes_REPNE, x86_opcodes)
op_seg(ES_REPNE, cpu_state.seg_es, x86_opcodes_REPNE, x86_opcodes)
op_seg(FS_REPNE, cpu_state.seg_fs, x86_opcodes_REPNE, x86_opcodes)
op_seg(GS_REPNE, cpu_state.seg_gs, x86_opcodes_REPNE, x86_opcodes)
op_seg(SS_REPNE, cpu_state.seg_ss, x86_opcodes_REPNE, x86_opcodes)
static int op_66(uint32_t fetchdat) /*Data size select*/
{
fetchdat = fastreadl(cs + cpu_state.pc);
if (cpu_state.abrt)
return 1;
cpu_state.pc++;
cpu_state.op32 = ((use32 & 0x100) ^ 0x100) | (cpu_state.op32 & 0x200);
CLOCK_CYCLES(2);
PREFETCH_PREFIX();
return x86_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
}
static int op_67(uint32_t fetchdat) /*Address size select*/
{
fetchdat = fastreadl(cs + cpu_state.pc);
if (cpu_state.abrt)
return 1;
cpu_state.pc++;
cpu_state.op32 = ((use32 & 0x200) ^ 0x200) | (cpu_state.op32 & 0x100);
CLOCK_CYCLES(2);
PREFETCH_PREFIX();
return x86_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
}
static int op_66_REPE(uint32_t fetchdat) /*Data size select*/
{
fetchdat = fastreadl(cs + cpu_state.pc);
if (cpu_state.abrt)
return 1;
cpu_state.pc++;
cpu_state.op32 = ((use32 & 0x100) ^ 0x100) | (cpu_state.op32 & 0x200);
CLOCK_CYCLES(2);
PREFETCH_PREFIX();
if (x86_opcodes_REPE[(fetchdat & 0xff) | cpu_state.op32])
return x86_opcodes_REPE[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
return x86_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
}
static int op_67_REPE(uint32_t fetchdat) /*Address size select*/
{
fetchdat = fastreadl(cs + cpu_state.pc);
if (cpu_state.abrt)
return 1;
cpu_state.pc++;
cpu_state.op32 = ((use32 & 0x200) ^ 0x200) | (cpu_state.op32 & 0x100);
CLOCK_CYCLES(2);
PREFETCH_PREFIX();
if (x86_opcodes_REPE[(fetchdat & 0xff) | cpu_state.op32])
return x86_opcodes_REPE[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
return x86_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
}
static int op_66_REPNE(uint32_t fetchdat) /*Data size select*/
{
fetchdat = fastreadl(cs + cpu_state.pc);
if (cpu_state.abrt)
return 1;
cpu_state.pc++;
cpu_state.op32 = ((use32 & 0x100) ^ 0x100) | (cpu_state.op32 & 0x200);
CLOCK_CYCLES(2);
PREFETCH_PREFIX();
if (x86_opcodes_REPNE[(fetchdat & 0xff) | cpu_state.op32])
return x86_opcodes_REPNE[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
return x86_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
}
static int op_67_REPNE(uint32_t fetchdat) /*Address size select*/
{
fetchdat = fastreadl(cs + cpu_state.pc);
if (cpu_state.abrt)
return 1;
cpu_state.pc++;
cpu_state.op32 = ((use32 & 0x200) ^ 0x200) | (cpu_state.op32 & 0x100);
CLOCK_CYCLES(2);
PREFETCH_PREFIX();
if (x86_opcodes_REPNE[(fetchdat & 0xff) | cpu_state.op32])
return x86_opcodes_REPNE[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
return x86_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
}
#endif /* _X86_OPS_PREFIX_H_ */
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