92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
static int opINT3(uint32_t fetchdat)
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{
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int cycles_old = cycles; UN_USED(cycles_old);
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if ((cr0 & 1) && (eflags & VM_FLAG) && (IOPL != 3))
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{
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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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{
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int cycles_old = cycles; UN_USED(cycles_old);
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if ((cr0 & 1) && (eflags & VM_FLAG) && (IOPL != 3))
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{
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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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{
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int cycles_old = cycles; UN_USED(cycles_old);
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uint8_t temp = getbytef();
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if ((cr0 & 1) && (eflags & VM_FLAG) && (IOPL != 3))
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{
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if (cr4 & CR4_VME)
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{
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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) return 1;
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t += (temp >> 3);
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if (t <= tr.limit)
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{
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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) return 1;
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if (!(d & (1 << (temp & 7))))
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{
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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(NULL,0);
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return 1;
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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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{
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int cycles_old = cycles; UN_USED(cycles_old);
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if ((cr0 & 1) && (eflags & VM_FLAG) && (IOPL != 3))
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{
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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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{
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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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