162 lines
8.1 KiB
C
162 lines
8.1 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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fetchdat = fastreadl(cs + cpu_state.pc); \
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if (cpu_state.abrt) 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) 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) 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) 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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op_seg(CS, _cs, x86_opcodes, x86_opcodes)
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op_seg(DS, _ds, x86_opcodes, x86_opcodes)
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op_seg(ES, _es, x86_opcodes, x86_opcodes)
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op_seg(FS, _fs, x86_opcodes, x86_opcodes)
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op_seg(GS, _gs, x86_opcodes, x86_opcodes)
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op_seg(SS, _ss, x86_opcodes, x86_opcodes)
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op_seg(CS_REPE, _cs, x86_opcodes_REPE, x86_opcodes)
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op_seg(DS_REPE, _ds, x86_opcodes_REPE, x86_opcodes)
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op_seg(ES_REPE, _es, x86_opcodes_REPE, x86_opcodes)
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op_seg(FS_REPE, _fs, x86_opcodes_REPE, x86_opcodes)
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op_seg(GS_REPE, _gs, x86_opcodes_REPE, x86_opcodes)
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op_seg(SS_REPE, _ss, x86_opcodes_REPE, x86_opcodes)
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op_seg(CS_REPNE, _cs, x86_opcodes_REPNE, x86_opcodes)
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op_seg(DS_REPNE, _ds, x86_opcodes_REPNE, x86_opcodes)
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op_seg(ES_REPNE, _es, x86_opcodes_REPNE, x86_opcodes)
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op_seg(FS_REPNE, _fs, x86_opcodes_REPNE, x86_opcodes)
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op_seg(GS_REPNE, _gs, x86_opcodes_REPNE, x86_opcodes)
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op_seg(SS_REPNE, _ss, x86_opcodes_REPNE, x86_opcodes)
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static int op_66(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) 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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return x86_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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}
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static int op_67(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) 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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return x86_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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}
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static int 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) 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_opcodes_REPE[(fetchdat & 0xff) | cpu_state.op32])
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return x86_opcodes_REPE[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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return x86_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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}
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static int 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) 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_opcodes_REPE[(fetchdat & 0xff) | cpu_state.op32])
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return x86_opcodes_REPE[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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return x86_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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}
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static int 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) 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_opcodes_REPNE[(fetchdat & 0xff) | cpu_state.op32])
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return x86_opcodes_REPNE[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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return x86_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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}
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static int 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) 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_opcodes_REPNE[(fetchdat & 0xff) | cpu_state.op32])
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return x86_opcodes_REPNE[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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return x86_opcodes[(fetchdat & 0xff) | cpu_state.op32](fetchdat >> 8);
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}
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