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https://github.com/sarah-walker-pcem/pcem.git
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318 lines
9.2 KiB
C
318 lines
9.2 KiB
C
#ifndef _X86_OPS_MUL_H_
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#define _X86_OPS_MUL_H_
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static int opIMUL_w_iw_a16(uint32_t fetchdat) {
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int32_t templ;
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int16_t tempw, tempw2;
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fetch_ea_16(fetchdat);
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if (cpu_mod != 3)
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SEG_CHECK_READ(cpu_state.ea_seg);
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tempw = geteaw();
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if (cpu_state.abrt)
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return 1;
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tempw2 = getword();
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if (cpu_state.abrt)
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return 1;
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templ = ((int)tempw) * ((int)tempw2);
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flags_rebuild();
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if ((templ >> 15) != 0 && (templ >> 15) != -1)
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cpu_state.flags |= C_FLAG | V_FLAG;
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else
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cpu_state.flags &= ~(C_FLAG | V_FLAG);
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cpu_state.regs[cpu_reg].w = templ & 0xffff;
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CLOCK_CYCLES((cpu_mod == 3) ? 14 : 17);
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PREFETCH_RUN((cpu_mod == 3) ? 14 : 17, 4, rmdat, 1, 0, 0, 0, 0);
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return 0;
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}
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static int opIMUL_w_iw_a32(uint32_t fetchdat) {
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int32_t templ;
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int16_t tempw, tempw2;
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fetch_ea_32(fetchdat);
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if (cpu_mod != 3)
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SEG_CHECK_READ(cpu_state.ea_seg);
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tempw = geteaw();
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if (cpu_state.abrt)
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return 1;
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tempw2 = getword();
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if (cpu_state.abrt)
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return 1;
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templ = ((int)tempw) * ((int)tempw2);
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flags_rebuild();
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if ((templ >> 15) != 0 && (templ >> 15) != -1)
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cpu_state.flags |= C_FLAG | V_FLAG;
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else
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cpu_state.flags &= ~(C_FLAG | V_FLAG);
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cpu_state.regs[cpu_reg].w = templ & 0xffff;
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CLOCK_CYCLES((cpu_mod == 3) ? 14 : 17);
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PREFETCH_RUN((cpu_mod == 3) ? 14 : 17, 4, rmdat, 1, 0, 0, 0, 1);
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return 0;
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}
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static int opIMUL_l_il_a16(uint32_t fetchdat) {
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int64_t temp64;
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int32_t templ, templ2;
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fetch_ea_16(fetchdat);
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if (cpu_mod != 3)
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SEG_CHECK_READ(cpu_state.ea_seg);
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templ = geteal();
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if (cpu_state.abrt)
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return 1;
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templ2 = getlong();
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if (cpu_state.abrt)
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return 1;
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temp64 = ((int64_t)templ) * ((int64_t)templ2);
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flags_rebuild();
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if ((temp64 >> 31) != 0 && (temp64 >> 31) != -1)
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cpu_state.flags |= C_FLAG | V_FLAG;
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else
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cpu_state.flags &= ~(C_FLAG | V_FLAG);
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cpu_state.regs[cpu_reg].l = temp64 & 0xffffffff;
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CLOCK_CYCLES(25);
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PREFETCH_RUN(25, 6, rmdat, 0, 1, 0, 0, 0);
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return 0;
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}
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static int opIMUL_l_il_a32(uint32_t fetchdat) {
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int64_t temp64;
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int32_t templ, templ2;
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fetch_ea_32(fetchdat);
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if (cpu_mod != 3)
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SEG_CHECK_READ(cpu_state.ea_seg);
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templ = geteal();
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if (cpu_state.abrt)
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return 1;
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templ2 = getlong();
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if (cpu_state.abrt)
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return 1;
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temp64 = ((int64_t)templ) * ((int64_t)templ2);
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flags_rebuild();
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if ((temp64 >> 31) != 0 && (temp64 >> 31) != -1)
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cpu_state.flags |= C_FLAG | V_FLAG;
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else
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cpu_state.flags &= ~(C_FLAG | V_FLAG);
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cpu_state.regs[cpu_reg].l = temp64 & 0xffffffff;
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CLOCK_CYCLES(25);
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PREFETCH_RUN(25, 6, rmdat, 0, 1, 0, 0, 1);
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return 0;
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}
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static int opIMUL_w_ib_a16(uint32_t fetchdat) {
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int32_t templ;
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int16_t tempw, tempw2;
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fetch_ea_16(fetchdat);
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if (cpu_mod != 3)
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SEG_CHECK_READ(cpu_state.ea_seg);
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tempw = geteaw();
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if (cpu_state.abrt)
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return 1;
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tempw2 = getbyte();
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if (cpu_state.abrt)
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return 1;
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if (tempw2 & 0x80)
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tempw2 |= 0xff00;
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templ = ((int)tempw) * ((int)tempw2);
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flags_rebuild();
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if ((templ >> 15) != 0 && (templ >> 15) != -1)
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cpu_state.flags |= C_FLAG | V_FLAG;
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else
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cpu_state.flags &= ~(C_FLAG | V_FLAG);
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cpu_state.regs[cpu_reg].w = templ & 0xffff;
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CLOCK_CYCLES((cpu_mod == 3) ? 14 : 17);
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PREFETCH_RUN((cpu_mod == 3) ? 14 : 17, 3, rmdat, 1, 0, 0, 0, 0);
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return 0;
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}
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static int opIMUL_w_ib_a32(uint32_t fetchdat) {
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int32_t templ;
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int16_t tempw, tempw2;
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fetch_ea_32(fetchdat);
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if (cpu_mod != 3)
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SEG_CHECK_READ(cpu_state.ea_seg);
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tempw = geteaw();
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if (cpu_state.abrt)
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return 1;
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tempw2 = getbyte();
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if (cpu_state.abrt)
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return 1;
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if (tempw2 & 0x80)
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tempw2 |= 0xff00;
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templ = ((int)tempw) * ((int)tempw2);
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flags_rebuild();
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if ((templ >> 15) != 0 && (templ >> 15) != -1)
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cpu_state.flags |= C_FLAG | V_FLAG;
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else
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cpu_state.flags &= ~(C_FLAG | V_FLAG);
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cpu_state.regs[cpu_reg].w = templ & 0xffff;
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CLOCK_CYCLES((cpu_mod == 3) ? 14 : 17);
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PREFETCH_RUN((cpu_mod == 3) ? 14 : 17, 3, rmdat, 1, 0, 0, 0, 1);
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return 0;
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}
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static int opIMUL_l_ib_a16(uint32_t fetchdat) {
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int64_t temp64;
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int32_t templ, templ2;
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fetch_ea_16(fetchdat);
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if (cpu_mod != 3)
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SEG_CHECK_READ(cpu_state.ea_seg);
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templ = geteal();
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if (cpu_state.abrt)
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return 1;
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templ2 = getbyte();
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if (cpu_state.abrt)
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return 1;
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if (templ2 & 0x80)
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templ2 |= 0xffffff00;
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temp64 = ((int64_t)templ) * ((int64_t)templ2);
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flags_rebuild();
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if ((temp64 >> 31) != 0 && (temp64 >> 31) != -1)
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cpu_state.flags |= C_FLAG | V_FLAG;
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else
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cpu_state.flags &= ~(C_FLAG | V_FLAG);
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cpu_state.regs[cpu_reg].l = temp64 & 0xffffffff;
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CLOCK_CYCLES(20);
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PREFETCH_RUN(20, 3, rmdat, 0, 1, 0, 0, 0);
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return 0;
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}
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static int opIMUL_l_ib_a32(uint32_t fetchdat) {
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int64_t temp64;
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int32_t templ, templ2;
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fetch_ea_32(fetchdat);
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if (cpu_mod != 3)
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SEG_CHECK_READ(cpu_state.ea_seg);
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templ = geteal();
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if (cpu_state.abrt)
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return 1;
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templ2 = getbyte();
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if (cpu_state.abrt)
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return 1;
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if (templ2 & 0x80)
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templ2 |= 0xffffff00;
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temp64 = ((int64_t)templ) * ((int64_t)templ2);
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flags_rebuild();
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if ((temp64 >> 31) != 0 && (temp64 >> 31) != -1)
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cpu_state.flags |= C_FLAG | V_FLAG;
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else
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cpu_state.flags &= ~(C_FLAG | V_FLAG);
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cpu_state.regs[cpu_reg].l = temp64 & 0xffffffff;
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CLOCK_CYCLES(20);
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PREFETCH_RUN(20, 3, rmdat, 0, 1, 0, 0, 1);
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return 0;
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}
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static int opIMUL_w_w_a16(uint32_t fetchdat) {
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int32_t templ;
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fetch_ea_16(fetchdat);
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if (cpu_mod != 3)
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SEG_CHECK_READ(cpu_state.ea_seg);
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templ = (int32_t)(int16_t)cpu_state.regs[cpu_reg].w * (int32_t)(int16_t)geteaw();
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if (cpu_state.abrt)
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return 1;
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cpu_state.regs[cpu_reg].w = templ & 0xFFFF;
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flags_rebuild();
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if ((templ >> 15) != 0 && (templ >> 15) != -1)
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cpu_state.flags |= C_FLAG | V_FLAG;
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else
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cpu_state.flags &= ~(C_FLAG | V_FLAG);
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CLOCK_CYCLES(18);
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PREFETCH_RUN(18, 2, rmdat, 1, 0, 0, 0, 0);
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return 0;
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}
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static int opIMUL_w_w_a32(uint32_t fetchdat) {
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int32_t templ;
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fetch_ea_32(fetchdat);
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if (cpu_mod != 3)
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SEG_CHECK_READ(cpu_state.ea_seg);
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templ = (int32_t)(int16_t)cpu_state.regs[cpu_reg].w * (int32_t)(int16_t)geteaw();
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if (cpu_state.abrt)
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return 1;
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cpu_state.regs[cpu_reg].w = templ & 0xFFFF;
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flags_rebuild();
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if ((templ >> 15) != 0 && (templ >> 15) != -1)
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cpu_state.flags |= C_FLAG | V_FLAG;
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else
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cpu_state.flags &= ~(C_FLAG | V_FLAG);
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CLOCK_CYCLES(18);
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PREFETCH_RUN(18, 2, rmdat, 1, 0, 0, 0, 1);
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return 0;
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}
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static int opIMUL_l_l_a16(uint32_t fetchdat) {
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int64_t temp64;
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fetch_ea_16(fetchdat);
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if (cpu_mod != 3)
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SEG_CHECK_READ(cpu_state.ea_seg);
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temp64 = (int64_t)(int32_t)cpu_state.regs[cpu_reg].l * (int64_t)(int32_t)geteal();
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if (cpu_state.abrt)
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return 1;
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cpu_state.regs[cpu_reg].l = temp64 & 0xFFFFFFFF;
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flags_rebuild();
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if ((temp64 >> 31) != 0 && (temp64 >> 31) != -1)
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cpu_state.flags |= C_FLAG | V_FLAG;
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else
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cpu_state.flags &= ~(C_FLAG | V_FLAG);
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CLOCK_CYCLES(30);
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PREFETCH_RUN(30, 2, rmdat, 0, 1, 0, 0, 0);
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return 0;
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}
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static int opIMUL_l_l_a32(uint32_t fetchdat) {
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int64_t temp64;
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fetch_ea_32(fetchdat);
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if (cpu_mod != 3)
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SEG_CHECK_READ(cpu_state.ea_seg);
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temp64 = (int64_t)(int32_t)cpu_state.regs[cpu_reg].l * (int64_t)(int32_t)geteal();
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if (cpu_state.abrt)
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return 1;
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cpu_state.regs[cpu_reg].l = temp64 & 0xFFFFFFFF;
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flags_rebuild();
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if ((temp64 >> 31) != 0 && (temp64 >> 31) != -1)
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cpu_state.flags |= C_FLAG | V_FLAG;
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else
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cpu_state.flags &= ~(C_FLAG | V_FLAG);
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CLOCK_CYCLES(30);
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PREFETCH_RUN(30, 2, rmdat, 0, 1, 0, 0, 1);
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return 0;
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}
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#endif /* _X86_OPS_MUL_H_ */
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