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Preliminary port of PCem's FPU timing emulation

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This commit is contained in:
nerd73
2020-06-15 04:11:12 -06:00
parent 1d27587182
commit a4d33513e4
12 changed files with 1124 additions and 600 deletions
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90
src/cpu/x87_ops_arith.h
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@@ -1,4 +1,4 @@
#define opFPU(name, optype, a_size, load_var, get, use_var) \
#define opFPU(name, optype, a_size, load_var, get, use_var, cycle_postfix) \
static int opFADD ## name ## _a ## a_size(uint32_t fetchdat) \
{ \
optype t; \
@@ -12,7 +12,7 @@ static int opFADD ## name ## _a ## a_size(uint32_t fetchdat) \
if ((cpu_state.npxc >> 10) & 3) \
fesetround(FE_TONEAREST); \
FP_TAG_VALID; \
CLOCK_CYCLES(8); \
CLOCK_CYCLES(x87_timings.fadd ## cycle_postfix); \
return 0; \
} \
static int opFCOM ## name ## _a ## a_size(uint32_t fetchdat) \
@@ -24,7 +24,7 @@ static int opFCOM ## name ## _a ## a_size(uint32_t fetchdat) \
load_var = get(); if (cpu_state.abrt) return 1; \
cpu_state.npxs &= ~(C0|C2|C3); \
cpu_state.npxs |= x87_compare(ST(0), (double)use_var); \
CLOCK_CYCLES(4); \
CLOCK_CYCLES(x87_timings.fcom ## cycle_postfix); \
return 0; \
} \
static int opFCOMP ## name ## _a ## a_size(uint32_t fetchdat) \
@@ -37,7 +37,7 @@ static int opFCOMP ## name ## _a ## a_size(uint32_t fetchdat) \
cpu_state.npxs &= ~(C0|C2|C3); \
cpu_state.npxs |= x87_compare(ST(0), (double)use_var); \
x87_pop(); \
CLOCK_CYCLES(4); \
CLOCK_CYCLES(x87_timings.fcom ## cycle_postfix); \
return 0; \
} \
static int opFDIV ## name ## _a ## a_size(uint32_t fetchdat) \
@@ -49,7 +49,7 @@ static int opFDIV ## name ## _a ## a_size(uint32_t fetchdat) \
load_var = get(); if (cpu_state.abrt) return 1; \
x87_div(ST(0), ST(0), use_var); \
FP_TAG_VALID; \
CLOCK_CYCLES(73); \
CLOCK_CYCLES(x87_timings.fdiv ## cycle_postfix); \
return 0; \
} \
static int opFDIVR ## name ## _a ## a_size(uint32_t fetchdat) \
@@ -61,7 +61,7 @@ static int opFDIVR ## name ## _a ## a_size(uint32_t fetchdat) \
load_var = get(); if (cpu_state.abrt) return 1; \
x87_div(ST(0), use_var, ST(0)); \
FP_TAG_VALID; \
CLOCK_CYCLES(73); \
CLOCK_CYCLES(x87_timings.fdiv ## cycle_postfix); \
return 0; \
} \
static int opFMUL ## name ## _a ## a_size(uint32_t fetchdat) \
@@ -73,7 +73,7 @@ static int opFMUL ## name ## _a ## a_size(uint32_t fetchdat) \
load_var = get(); if (cpu_state.abrt) return 1; \
ST(0) *= use_var; \
FP_TAG_VALID; \
CLOCK_CYCLES(11); \
CLOCK_CYCLES(x87_timings.fmul ## cycle_postfix); \
return 0; \
} \
static int opFSUB ## name ## _a ## a_size(uint32_t fetchdat) \
@@ -85,7 +85,7 @@ static int opFSUB ## name ## _a ## a_size(uint32_t fetchdat) \
load_var = get(); if (cpu_state.abrt) return 1; \
ST(0) -= use_var; \
FP_TAG_VALID; \
CLOCK_CYCLES(8); \
CLOCK_CYCLES(x87_timings.fadd ## cycle_postfix); \
return 0; \
} \
static int opFSUBR ## name ## _a ## a_size(uint32_t fetchdat) \
@@ -97,27 +97,27 @@ static int opFSUBR ## name ## _a ## a_size(uint32_t fetchdat) \
load_var = get(); if (cpu_state.abrt) return 1; \
ST(0) = use_var - ST(0); \
FP_TAG_VALID; \
CLOCK_CYCLES(8); \
CLOCK_CYCLES(x87_timings.fadd ## cycle_postfix); \
return 0; \
}
opFPU(s, x87_ts, 16, t.i, geteal, t.s)
opFPU(s, x87_ts, 16, t.i, geteal, t.s, _32)
#ifndef FPU_8087
opFPU(s, x87_ts, 32, t.i, geteal, t.s)
opFPU(s, x87_ts, 32, t.i, geteal, t.s, _32)
#endif
opFPU(d, x87_td, 16, t.i, geteaq, t.d)
opFPU(d, x87_td, 16, t.i, geteaq, t.d, _64)
#ifndef FPU_8087
opFPU(d, x87_td, 32, t.i, geteaq, t.d)
opFPU(d, x87_td, 32, t.i, geteaq, t.d, _64)
#endif
opFPU(iw, uint16_t, 16, t, geteaw, (double)(int16_t)t)
opFPU(iw, uint16_t, 16, t, geteaw, (double)(int16_t)t, _i16)
#ifndef FPU_8087
opFPU(iw, uint16_t, 32, t, geteaw, (double)(int16_t)t)
opFPU(iw, uint16_t, 32, t, geteaw, (double)(int16_t)t, _i16)
#endif
opFPU(il, uint32_t, 16, t, geteal, (double)(int32_t)t)
opFPU(il, uint32_t, 16, t, geteal, (double)(int32_t)t, _i32)
#ifndef FPU_8087
opFPU(il, uint32_t, 32, t, geteal, (double)(int32_t)t)
opFPU(il, uint32_t, 32, t, geteal, (double)(int32_t)t, _i32)
#endif
@@ -127,7 +127,7 @@ static int opFADD(uint32_t fetchdat)
cpu_state.pc++;
ST(0) = ST(0) + ST(fetchdat & 7);
FP_TAG_VALID;
CLOCK_CYCLES(8);
CLOCK_CYCLES(x87_timings.fadd);
return 0;
}
static int opFADDr(uint32_t fetchdat)
@@ -136,7 +136,7 @@ static int opFADDr(uint32_t fetchdat)
cpu_state.pc++;
ST(fetchdat & 7) = ST(fetchdat & 7) + ST(0);
FP_TAG_VALID_F;
CLOCK_CYCLES(8);
CLOCK_CYCLES(x87_timings.fadd);
return 0;
}
static int opFADDP(uint32_t fetchdat)
@@ -146,7 +146,7 @@ static int opFADDP(uint32_t fetchdat)
ST(fetchdat & 7) = ST(fetchdat & 7) + ST(0);
FP_TAG_VALID_F;
x87_pop();
CLOCK_CYCLES(8);
CLOCK_CYCLES(x87_timings.fadd);
return 0;
}
@@ -157,7 +157,7 @@ static int opFCOM(uint32_t fetchdat)
cpu_state.npxs &= ~(C0|C2|C3);
if (ST(0) == ST(fetchdat & 7)) cpu_state.npxs |= C3;
else if (ST(0) < ST(fetchdat & 7)) cpu_state.npxs |= C0;
CLOCK_CYCLES(4);
CLOCK_CYCLES(x87_timings.fcom);
return 0;
}
@@ -168,7 +168,7 @@ static int opFCOMP(uint32_t fetchdat)
cpu_state.npxs &= ~(C0|C2|C3);
cpu_state.npxs |= x87_compare(ST(0), ST(fetchdat & 7));
x87_pop();
CLOCK_CYCLES(4);
CLOCK_CYCLES(x87_timings.fcom);
return 0;
}
@@ -187,7 +187,7 @@ static int opFCOMPP(uint32_t fetchdat)
x87_pop();
x87_pop();
CLOCK_CYCLES(4);
CLOCK_CYCLES(x87_timings.fcom);
return 0;
}
#ifndef FPU_8087
@@ -199,7 +199,7 @@ static int opFUCOMPP(uint32_t fetchdat)
cpu_state.npxs |= x87_ucompare(ST(0), ST(1));
x87_pop();
x87_pop();
CLOCK_CYCLES(5);
CLOCK_CYCLES(x87_timings.fucom);
return 0;
}
@@ -211,7 +211,7 @@ static int opFCOMI(uint32_t fetchdat)
cpu_state.flags &= ~(Z_FLAG | P_FLAG | C_FLAG);
if (ST(0) == ST(fetchdat & 7)) cpu_state.flags |= Z_FLAG;
else if (ST(0) < ST(fetchdat & 7)) cpu_state.flags |= C_FLAG;
CLOCK_CYCLES(4);
CLOCK_CYCLES(x87_timings.fcom);
return 0;
}
static int opFCOMIP(uint32_t fetchdat)
@@ -223,7 +223,7 @@ static int opFCOMIP(uint32_t fetchdat)
if (ST(0) == ST(fetchdat & 7)) cpu_state.flags |= Z_FLAG;
else if (ST(0) < ST(fetchdat & 7)) cpu_state.flags |= C_FLAG;
x87_pop();
CLOCK_CYCLES(4);
CLOCK_CYCLES(x87_timings.fcom);
return 0;
}
#endif
@@ -234,7 +234,7 @@ static int opFDIV(uint32_t fetchdat)
cpu_state.pc++;
x87_div(ST(0), ST(0), ST(fetchdat & 7));
FP_TAG_VALID;
CLOCK_CYCLES(73);
CLOCK_CYCLES(x87_timings.fdiv);
return 0;
}
static int opFDIVr(uint32_t fetchdat)
@@ -243,7 +243,7 @@ static int opFDIVr(uint32_t fetchdat)
cpu_state.pc++;
x87_div(ST(fetchdat & 7), ST(fetchdat & 7), ST(0));
FP_TAG_VALID_F;
CLOCK_CYCLES(73);
CLOCK_CYCLES(x87_timings.fdiv);
return 0;
}
static int opFDIVP(uint32_t fetchdat)
@@ -253,7 +253,7 @@ static int opFDIVP(uint32_t fetchdat)
x87_div(ST(fetchdat & 7), ST(fetchdat & 7), ST(0));
FP_TAG_VALID_F;
x87_pop();
CLOCK_CYCLES(73);
CLOCK_CYCLES(x87_timings.fdiv);
return 0;
}
@@ -263,7 +263,7 @@ static int opFDIVR(uint32_t fetchdat)
cpu_state.pc++;
x87_div(ST(0), ST(fetchdat&7), ST(0));
FP_TAG_VALID;
CLOCK_CYCLES(73);
CLOCK_CYCLES(x87_timings.fdiv);
return 0;
}
static int opFDIVRr(uint32_t fetchdat)
@@ -272,7 +272,7 @@ static int opFDIVRr(uint32_t fetchdat)
cpu_state.pc++;
x87_div(ST(fetchdat & 7), ST(0), ST(fetchdat & 7));
FP_TAG_VALID_F;
CLOCK_CYCLES(73);
CLOCK_CYCLES(x87_timings.fdiv);
return 0;
}
static int opFDIVRP(uint32_t fetchdat)
@@ -282,7 +282,7 @@ static int opFDIVRP(uint32_t fetchdat)
x87_div(ST(fetchdat & 7), ST(0), ST(fetchdat & 7));
FP_TAG_VALID_F;
x87_pop();
CLOCK_CYCLES(73);
CLOCK_CYCLES(x87_timings.fdiv);
return 0;
}
@@ -292,7 +292,7 @@ static int opFMUL(uint32_t fetchdat)
cpu_state.pc++;
ST(0) = ST(0) * ST(fetchdat & 7);
FP_TAG_VALID;
CLOCK_CYCLES(16);
CLOCK_CYCLES(x87_timings.fmul);
return 0;
}
static int opFMULr(uint32_t fetchdat)
@@ -301,7 +301,7 @@ static int opFMULr(uint32_t fetchdat)
cpu_state.pc++;
ST(fetchdat & 7) = ST(0) * ST(fetchdat & 7);
FP_TAG_VALID_F;
CLOCK_CYCLES(16);
CLOCK_CYCLES(x87_timings.fmul);
return 0;
}
static int opFMULP(uint32_t fetchdat)
@@ -311,7 +311,7 @@ static int opFMULP(uint32_t fetchdat)
ST(fetchdat & 7) = ST(0) * ST(fetchdat & 7);
FP_TAG_VALID_F;
x87_pop();
CLOCK_CYCLES(16);
CLOCK_CYCLES(x87_timings.fmul);
return 0;
}
@@ -321,7 +321,7 @@ static int opFSUB(uint32_t fetchdat)
cpu_state.pc++;
ST(0) = ST(0) - ST(fetchdat & 7);
FP_TAG_VALID;
CLOCK_CYCLES(8);
CLOCK_CYCLES(x87_timings.fadd);
return 0;
}
static int opFSUBr(uint32_t fetchdat)
@@ -330,7 +330,7 @@ static int opFSUBr(uint32_t fetchdat)
cpu_state.pc++;
ST(fetchdat & 7) = ST(fetchdat & 7) - ST(0);
FP_TAG_VALID_F;
CLOCK_CYCLES(8);
CLOCK_CYCLES(x87_timings.fadd);
return 0;
}
static int opFSUBP(uint32_t fetchdat)
@@ -340,7 +340,7 @@ static int opFSUBP(uint32_t fetchdat)
ST(fetchdat & 7) = ST(fetchdat & 7) - ST(0);
FP_TAG_VALID_F;
x87_pop();
CLOCK_CYCLES(8);
CLOCK_CYCLES(x87_timings.fadd);
return 0;
}
@@ -350,7 +350,7 @@ static int opFSUBR(uint32_t fetchdat)
cpu_state.pc++;
ST(0) = ST(fetchdat & 7) - ST(0);
FP_TAG_VALID;
CLOCK_CYCLES(8);
CLOCK_CYCLES(x87_timings.fadd);
return 0;
}
static int opFSUBRr(uint32_t fetchdat)
@@ -359,7 +359,7 @@ static int opFSUBRr(uint32_t fetchdat)
cpu_state.pc++;
ST(fetchdat & 7) = ST(0) - ST(fetchdat & 7);
FP_TAG_VALID_F;
CLOCK_CYCLES(8);
CLOCK_CYCLES(x87_timings.fadd);
return 0;
}
static int opFSUBRP(uint32_t fetchdat)
@@ -369,7 +369,7 @@ static int opFSUBRP(uint32_t fetchdat)
ST(fetchdat & 7) = ST(0) - ST(fetchdat & 7);
FP_TAG_VALID_F;
x87_pop();
CLOCK_CYCLES(8);
CLOCK_CYCLES(x87_timings.fadd);
return 0;
}
@@ -380,7 +380,7 @@ static int opFUCOM(uint32_t fetchdat)
cpu_state.pc++;
cpu_state.npxs &= ~(C0|C2|C3);
cpu_state.npxs |= x87_ucompare(ST(0), ST(fetchdat & 7));
CLOCK_CYCLES(4);
CLOCK_CYCLES(x87_timings.fucom);
return 0;
}
@@ -391,7 +391,7 @@ static int opFUCOMP(uint32_t fetchdat)
cpu_state.npxs &= ~(C0|C2|C3);
cpu_state.npxs |= x87_ucompare(ST(0), ST(fetchdat & 7));
x87_pop();
CLOCK_CYCLES(4);
CLOCK_CYCLES(x87_timings.fucom);
return 0;
}
@@ -403,7 +403,7 @@ static int opFUCOMI(uint32_t fetchdat)
cpu_state.flags &= ~(Z_FLAG | P_FLAG | C_FLAG);
if (ST(0) == ST(fetchdat & 7)) cpu_state.flags |= Z_FLAG;
else if (ST(0) < ST(fetchdat & 7)) cpu_state.flags |= C_FLAG;
CLOCK_CYCLES(4);
CLOCK_CYCLES(x87_timings.fucom);
return 0;
}
static int opFUCOMIP(uint32_t fetchdat)
@@ -415,7 +415,7 @@ static int opFUCOMIP(uint32_t fetchdat)
if (ST(0) == ST(fetchdat & 7)) cpu_state.flags |= Z_FLAG;
else if (ST(0) < ST(fetchdat & 7)) cpu_state.flags |= C_FLAG;
x87_pop();
CLOCK_CYCLES(4);
CLOCK_CYCLES(x87_timings.fucom);
return 0;
}
#endif