293 lines
17 KiB
C
293 lines
17 KiB
C
#define op_seg(name, seg, opcode_table, normal_opcode_table) \
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static int op##name##_w_a16(uint32_t fetchdat) \
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{ \
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int legal; \
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fetchdat = fastreadl(cs + cpu_state.pc); \
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if (cpu_state.abrt) \
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return 1; \
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cpu_state.pc++; \
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\
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if (in_lock) { \
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legal = is_lock_legal(fetchdat); \
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\
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ILLEGAL_ON(legal == 0); \
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} \
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\
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cpu_state.ea_seg = &seg; \
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cpu_state.ssegs = 1; \
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CLOCK_CYCLES(4); \
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PREFETCH_PREFIX(); \
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\
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if (opcode_table[fetchdat & 0xff]) \
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return opcode_table[fetchdat & 0xff](fetchdat >> 8); \
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return normal_opcode_table[fetchdat & 0xff](fetchdat >> 8); \
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} \
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\
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static int op##name##_l_a16(uint32_t fetchdat) \
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{ \
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int legal; \
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fetchdat = fastreadl(cs + cpu_state.pc); \
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if (cpu_state.abrt) \
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return 1; \
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cpu_state.pc++; \
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\
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if (in_lock) { \
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legal = is_lock_legal(fetchdat); \
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\
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ILLEGAL_ON(legal == 0); \
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} \
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\
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cpu_state.ea_seg = &seg; \
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cpu_state.ssegs = 1; \
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CLOCK_CYCLES(4); \
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PREFETCH_PREFIX(); \
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\
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if (opcode_table[(fetchdat & 0xff) | 0x100]) \
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return opcode_table[(fetchdat & 0xff) | 0x100](fetchdat >> 8); \
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return normal_opcode_table[(fetchdat & 0xff) | 0x100](fetchdat >> 8); \
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} \
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\
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static int op##name##_w_a32(uint32_t fetchdat) \
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{ \
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int legal; \
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fetchdat = fastreadl(cs + cpu_state.pc); \
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if (cpu_state.abrt) \
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return 1; \
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cpu_state.pc++; \
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\
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if (in_lock) { \
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legal = is_lock_legal(fetchdat); \
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\
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ILLEGAL_ON(legal == 0); \
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} \
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\
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cpu_state.ea_seg = &seg; \
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cpu_state.ssegs = 1; \
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CLOCK_CYCLES(4); \
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PREFETCH_PREFIX(); \
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\
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if (opcode_table[(fetchdat & 0xff) | 0x200]) \
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return opcode_table[(fetchdat & 0xff) | 0x200](fetchdat >> 8); \
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return normal_opcode_table[(fetchdat & 0xff) | 0x200](fetchdat >> 8); \
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} \
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\
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static int op##name##_l_a32(uint32_t fetchdat) \
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{ \
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int legal; \
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fetchdat = fastreadl(cs + cpu_state.pc); \
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if (cpu_state.abrt) \
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return 1; \
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cpu_state.pc++; \
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\
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if (in_lock) { \
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legal = is_lock_legal(fetchdat); \
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\
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ILLEGAL_ON(legal == 0); \
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} \
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\
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cpu_state.ea_seg = &seg; \
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cpu_state.ssegs = 1; \
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CLOCK_CYCLES(4); \
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PREFETCH_PREFIX(); \
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\
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if (opcode_table[(fetchdat & 0xff) | 0x300]) \
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return opcode_table[(fetchdat & 0xff) | 0x300](fetchdat >> 8); \
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return normal_opcode_table[(fetchdat & 0xff) | 0x300](fetchdat >> 8); \
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}
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// clang-format off
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op_seg(CS, cpu_state.seg_cs, x86_2386_opcodes, x86_2386_opcodes)
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op_seg(DS, cpu_state.seg_ds, x86_2386_opcodes, x86_2386_opcodes)
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op_seg(ES, cpu_state.seg_es, x86_2386_opcodes, x86_2386_opcodes)
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op_seg(FS, cpu_state.seg_fs, x86_2386_opcodes, x86_2386_opcodes)
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op_seg(GS, cpu_state.seg_gs, x86_2386_opcodes, x86_2386_opcodes)
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op_seg(SS, cpu_state.seg_ss, x86_2386_opcodes, x86_2386_opcodes)
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// clang-format on
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#define op_srp(name, seg, opcode_table, normal_opcode_table) \
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static int op##name##_w_a16(uint32_t fetchdat) \
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{ \
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fetchdat = fastreadl(cs + cpu_state.pc); \
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if (cpu_state.abrt) \
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return 1; \
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cpu_state.pc++; \
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\
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cpu_state.ea_seg = &seg; \
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cpu_state.ssegs = 1; \
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CLOCK_CYCLES(4); \
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PREFETCH_PREFIX(); \
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\
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if (opcode_table[fetchdat & 0xff]) \
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return opcode_table[fetchdat & 0xff](fetchdat >> 8); \
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return normal_opcode_table[fetchdat & 0xff](fetchdat >> 8); \
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} \
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\
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static int op##name##_l_a16(uint32_t fetchdat) \
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{ \
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fetchdat = fastreadl(cs + cpu_state.pc); \
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if (cpu_state.abrt) \
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return 1; \
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cpu_state.pc++; \
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\
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cpu_state.ea_seg = &seg; \
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cpu_state.ssegs = 1; \
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CLOCK_CYCLES(4); \
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PREFETCH_PREFIX(); \
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\
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if (opcode_table[(fetchdat & 0xff) | 0x100]) \
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return opcode_table[(fetchdat & 0xff) | 0x100](fetchdat >> 8); \
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return normal_opcode_table[(fetchdat & 0xff) | 0x100](fetchdat >> 8); \
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} \
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\
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static int op##name##_w_a32(uint32_t fetchdat) \
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{ \
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fetchdat = fastreadl(cs + cpu_state.pc); \
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if (cpu_state.abrt) \
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return 1; \
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cpu_state.pc++; \
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\
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cpu_state.ea_seg = &seg; \
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cpu_state.ssegs = 1; \
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CLOCK_CYCLES(4); \
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PREFETCH_PREFIX(); \
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\
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if (opcode_table[(fetchdat & 0xff) | 0x200]) \
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return opcode_table[(fetchdat & 0xff) | 0x200](fetchdat >> 8); \
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return normal_opcode_table[(fetchdat & 0xff) | 0x200](fetchdat >> 8); \
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} \
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\
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static int op##name##_l_a32(uint32_t fetchdat) \
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{ \
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fetchdat = fastreadl(cs + cpu_state.pc); \
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if (cpu_state.abrt) \
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return 1; \
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cpu_state.pc++; \
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\
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cpu_state.ea_seg = &seg; \
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cpu_state.ssegs = 1; \
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CLOCK_CYCLES(4); \
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PREFETCH_PREFIX(); \
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\
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if (opcode_table[(fetchdat & 0xff) | 0x300]) \
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return opcode_table[(fetchdat & 0xff) | 0x300](fetchdat >> 8); \
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return normal_opcode_table[(fetchdat & 0xff) | 0x300](fetchdat >> 8); \
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}
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// clang-format off
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op_srp(CS_REPE, cpu_state.seg_cs, x86_2386_opcodes_REPE, x86_2386_opcodes)
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op_srp(DS_REPE, cpu_state.seg_ds, x86_2386_opcodes_REPE, x86_2386_opcodes)
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op_srp(ES_REPE, cpu_state.seg_es, x86_2386_opcodes_REPE, x86_2386_opcodes)
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op_srp(FS_REPE, cpu_state.seg_fs, x86_2386_opcodes_REPE, x86_2386_opcodes)
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op_srp(GS_REPE, cpu_state.seg_gs, x86_2386_opcodes_REPE, x86_2386_opcodes)
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op_srp(SS_REPE, cpu_state.seg_ss, x86_2386_opcodes_REPE, x86_2386_opcodes)
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op_srp(CS_REPNE, cpu_state.seg_cs, x86_2386_opcodes_REPNE, x86_2386_opcodes)
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op_srp(DS_REPNE, cpu_state.seg_ds, x86_2386_opcodes_REPNE, x86_2386_opcodes)
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op_srp(ES_REPNE, cpu_state.seg_es, x86_2386_opcodes_REPNE, x86_2386_opcodes)
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op_srp(FS_REPNE, cpu_state.seg_fs, x86_2386_opcodes_REPNE, x86_2386_opcodes)
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op_srp(GS_REPNE, cpu_state.seg_gs, x86_2386_opcodes_REPNE, x86_2386_opcodes)
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op_srp(SS_REPNE, cpu_state.seg_ss, x86_2386_opcodes_REPNE, x86_2386_opcodes)
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// clang-format on
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static int
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op_66(uint32_t fetchdat) /*Data size select*/
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{
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int legal;
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fetchdat = fastreadl(cs + cpu_state.pc);
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if (cpu_state.abrt)
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return 1;
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cpu_state.pc++;
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if (in_lock) {
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legal = is_lock_legal(fetchdat);
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ILLEGAL_ON(legal == 0);
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}
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cpu_state.op32 = ((use32 & 0x100) ^ 0x100) | (cpu_state.op32 & 0x200);
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CLOCK_CYCLES(2);
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PREFETCH_PREFIX();
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return x86_2386_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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}
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static int
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op_67(uint32_t fetchdat) /*Address size select*/
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{
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int legal;
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fetchdat = fastreadl(cs + cpu_state.pc);
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if (cpu_state.abrt)
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return 1;
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cpu_state.pc++;
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if (in_lock) {
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legal = is_lock_legal(fetchdat);
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ILLEGAL_ON(legal == 0);
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}
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cpu_state.op32 = ((use32 & 0x200) ^ 0x200) | (cpu_state.op32 & 0x100);
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CLOCK_CYCLES(2);
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PREFETCH_PREFIX();
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return x86_2386_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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}
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static int
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op_66_REPE(uint32_t fetchdat) /*Data size select*/
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{
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fetchdat = fastreadl(cs + cpu_state.pc);
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if (cpu_state.abrt)
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return 1;
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cpu_state.pc++;
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cpu_state.op32 = ((use32 & 0x100) ^ 0x100) | (cpu_state.op32 & 0x200);
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CLOCK_CYCLES(2);
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PREFETCH_PREFIX();
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if (x86_2386_opcodes_REPE[(fetchdat & 0xff) | cpu_state.op32])
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return x86_2386_opcodes_REPE[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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return x86_2386_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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}
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static int
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op_67_REPE(uint32_t fetchdat) /*Address size select*/
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{
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fetchdat = fastreadl(cs + cpu_state.pc);
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if (cpu_state.abrt)
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return 1;
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cpu_state.pc++;
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cpu_state.op32 = ((use32 & 0x200) ^ 0x200) | (cpu_state.op32 & 0x100);
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CLOCK_CYCLES(2);
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PREFETCH_PREFIX();
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if (x86_2386_opcodes_REPE[(fetchdat & 0xff) | cpu_state.op32])
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return x86_2386_opcodes_REPE[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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return x86_2386_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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}
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static int
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op_66_REPNE(uint32_t fetchdat) /*Data size select*/
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{
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fetchdat = fastreadl(cs + cpu_state.pc);
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if (cpu_state.abrt)
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return 1;
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cpu_state.pc++;
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cpu_state.op32 = ((use32 & 0x100) ^ 0x100) | (cpu_state.op32 & 0x200);
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CLOCK_CYCLES(2);
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PREFETCH_PREFIX();
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if (x86_2386_opcodes_REPNE[(fetchdat & 0xff) | cpu_state.op32])
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return x86_2386_opcodes_REPNE[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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return x86_2386_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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}
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static int
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op_67_REPNE(uint32_t fetchdat) /*Address size select*/
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{
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fetchdat = fastreadl(cs + cpu_state.pc);
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if (cpu_state.abrt)
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return 1;
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cpu_state.pc++;
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cpu_state.op32 = ((use32 & 0x200) ^ 0x200) | (cpu_state.op32 & 0x100);
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CLOCK_CYCLES(2);
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PREFETCH_PREFIX();
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if (x86_2386_opcodes_REPNE[(fetchdat & 0xff) | cpu_state.op32])
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return x86_2386_opcodes_REPNE[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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return x86_2386_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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}
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