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https://github.com/sarah-walker-pcem/pcem.git
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121 lines
4.0 KiB
C
121 lines
4.0 KiB
C
#ifndef _X86_OPS_INT_H_
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#define _X86_OPS_INT_H_
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static int opINT3(uint32_t fetchdat) {
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int cycles_old = cycles;
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UNUSED(cycles_old);
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if ((cr0 & 1) && (cpu_state.eflags & VM_FLAG) && (IOPL != 3)) {
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x86gpf(NULL, 0);
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return 1;
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}
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x86_int_sw(3);
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CLOCK_CYCLES((is486) ? 44 : 59);
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PREFETCH_RUN(cycles_old - cycles, 1, -1, 0, 0, 0, 0, 0);
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return 1;
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}
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static int opINT1(uint32_t fetchdat) {
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int cycles_old = cycles;
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UNUSED(cycles_old);
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if ((cr0 & 1) && (cpu_state.eflags & VM_FLAG) && (IOPL != 3)) {
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x86gpf(NULL, 0);
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return 1;
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}
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x86_int_sw(1);
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CLOCK_CYCLES((is486) ? 44 : 59);
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PREFETCH_RUN(cycles_old - cycles, 1, -1, 0, 0, 0, 0, 0);
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return 1;
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}
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static int opINT(uint32_t fetchdat) {
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int cycles_old = cycles;
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UNUSED(cycles_old);
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uint8_t temp = getbytef();
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if ((cr0 & 1) && (cpu_state.eflags & VM_FLAG) && (IOPL != 3)) {
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if (cr4 & CR4_VME) {
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uint16_t t;
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uint8_t d;
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cpl_override = 1;
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t = readmemw(tr.base, 0x66) - 32;
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cpl_override = 0;
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if (cpu_state.abrt)
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return 1;
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t += (temp >> 3);
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if (t <= tr.limit) {
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cpl_override = 1;
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d = readmemb(tr.base, t); // + (temp >> 3));
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cpl_override = 0;
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if (cpu_state.abrt)
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return 1;
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if (!(d & (1 << (temp & 7)))) {
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x86_int_sw_rm(temp);
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PREFETCH_RUN(cycles_old - cycles, 2, -1, 0, 0, 0, 0, 0);
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return 1;
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}
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}
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}
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x86gpf_expected(NULL, 0);
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return 1;
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}
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// /*if (temp == 0x10 && AH == 0xe) */pclog("INT %02X : %04X %04X %04X %04X %c %04X:%04X\n", temp, AX, BX, CX,
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// DX, (AL < 32) ? ' ' : AL, CS, pc); if (CS == 0x0028 && pc == 0xC03813C0)
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// output = 3;
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/* if (pc == 0x8028009A)
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output = 3;
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if (pc == 0x80282B6F)
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{
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__times++;
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if (__times == 2)
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fatal("WRONG\n");
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}
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if (pc == 0x802809CE)
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fatal("RIGHT\n");*/
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// if (CS == 0x0028 && pc == 0x80037FE9)
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// output = 3;
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// if (CS == 0x9087 && pc == 0x3763)
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// fatal("Here\n");
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// if (CS==0x9087 && pc == 0x0850)
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// output = 1;
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/* if (output && pc == 0x80033008)
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{
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__times++;
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if (__times == 2)
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fatal("WRONG\n");
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}*/
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/* if (output && pc == 0x80D8)
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{
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__times++;
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if (__times == 2)
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fatal("RIGHT\n");
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}*/
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x86_int_sw(temp);
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PREFETCH_RUN(cycles_old - cycles, 2, -1, 0, 0, 0, 0, 0);
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return 1;
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}
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static int opINTO(uint32_t fetchdat) {
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int cycles_old = cycles;
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UNUSED(cycles_old);
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if ((cr0 & 1) && (cpu_state.eflags & VM_FLAG) && (IOPL != 3)) {
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x86gpf(NULL, 0);
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return 1;
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}
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if (VF_SET()) {
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cpu_state.oldpc = cpu_state.pc;
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x86_int_sw(4);
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PREFETCH_RUN(cycles_old - cycles, 1, -1, 0, 0, 0, 0, 0);
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return 1;
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}
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CLOCK_CYCLES(3);
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PREFETCH_RUN(3, 1, -1, 0, 0, 0, 0, 0);
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return 0;
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}
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#endif /* _X86_OPS_INT_H_ */
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