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ARM: Pull some SkyEye fixes from 3dmoo.

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This commit is contained in:
bunnei 2014-12-13 01:24:03 -05:00
parent af1cd769e7
commit d26b7146ce
3 changed files with 485 additions and 419 deletions
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652
src/core/arm/interpreter/armemu.cpp
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@ -1166,7 +1166,7 @@ mainswitch:
else if ((((int)BITS(21, 27)) == 0x3e) && ((int)BITS(4, 6) == 0x1)) { else if ((((int)BITS(21, 27)) == 0x3e) && ((int)BITS(4, 6) == 0x1)) {
//(ARMword)(instr<<(31-(n))) >> ((31-(n))+(m)) //(ARMword)(instr<<(31-(n))) >> ((31-(n))+(m))
unsigned msb ,tmp_rn, tmp_rd, dst; unsigned msb ,tmp_rn, tmp_rd, dst;
msb = tmp_rd = tmp_rn = dst = 0; tmp_rd = tmp_rn = dst = 0;
Rd = BITS(12, 15); Rd = BITS(12, 15);
Rn = BITS(0, 3); Rn = BITS(0, 3);
lsb = BITS(7, 11); lsb = BITS(7, 11);
@ -1737,7 +1737,7 @@ mainswitch:
//chy 2006-02-15 if in user mode, can not set cpsr 0:23 //chy 2006-02-15 if in user mode, can not set cpsr 0:23
//from p165 of ARMARM book //from p165 of ARMARM book
state->Cpsr = GETSPSR (state->Bank); state->Cpsr = GETSPSR (state->Bank);
//ARMul_CPSRAltered (state); ARMul_CPSRAltered (state);
#else #else
rhs = DPRegRHS; rhs = DPRegRHS;
temp = LHS & rhs; temp = LHS & rhs;
@ -1877,7 +1877,7 @@ mainswitch:
/* TEQP reg */ /* TEQP reg */
#ifdef MODE32 #ifdef MODE32
state->Cpsr = GETSPSR (state->Bank); state->Cpsr = GETSPSR (state->Bank);
//ARMul_CPSRAltered (state); ARMul_CPSRAltered (state);
#else #else
rhs = DPRegRHS; rhs = DPRegRHS;
temp = LHS ^ rhs; temp = LHS ^ rhs;
@ -1993,7 +1993,7 @@ mainswitch:
/* CMPP reg. */ /* CMPP reg. */
#ifdef MODE32 #ifdef MODE32
state->Cpsr = GETSPSR (state->Bank); state->Cpsr = GETSPSR (state->Bank);
//ARMul_CPSRAltered (state); ARMul_CPSRAltered (state);
#else #else
rhs = DPRegRHS; rhs = DPRegRHS;
temp = LHS - rhs; temp = LHS - rhs;
@ -2112,7 +2112,7 @@ mainswitch:
if (DESTReg == 15) { if (DESTReg == 15) {
#ifdef MODE32 #ifdef MODE32
state->Cpsr = GETSPSR (state->Bank); state->Cpsr = GETSPSR (state->Bank);
//ARMul_CPSRAltered (state); ARMul_CPSRAltered (state);
#else #else
rhs = DPRegRHS; rhs = DPRegRHS;
temp = LHS + rhs; temp = LHS + rhs;
@ -2200,17 +2200,57 @@ mainswitch:
Handle_Store_Double (state, instr); Handle_Store_Double (state, instr);
break; break;
} }
if (BITS(4, 11) == 0xF9) { //strexd
u32 l = LHSReg;
bool enter = false;
if (state->currentexval == (u32)ARMul_ReadWord(state, state->currentexaddr)&&
state->currentexvald == (u32)ARMul_ReadWord(state, state->currentexaddr + 4))
enter = true;
//todo bug this and STREXD and LDREXD http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0360e/CHDGJGGC.html
if (enter) {
ARMul_StoreWordN(state, LHS, state->Reg[RHSReg]);
ARMul_StoreWordN(state,LHS + 4 , state->Reg[RHSReg + 1]);
state->Reg[DESTReg] = 0;
} else {
state->Reg[DESTReg] = 1;
}
break;
}
#endif #endif
dest = DPRegRHS; dest = DPRegRHS;
WRITEDEST (dest); WRITEDEST (dest);
break; break;
case 0x1b: /* MOVS reg */ case 0x1B: /* MOVS reg */
#ifdef MODET #ifdef MODET
/* ldrexd ichfly */
if (BITS(0, 11) == 0xF9F) { //strexd
lhs = LHS;
state->currentexaddr = lhs;
state->currentexval = (u32)ARMul_ReadWord(state, lhs);
state->currentexvald = (u32)ARMul_ReadWord(state, lhs + 4);
state->Reg[DESTReg] = ARMul_LoadWordN(state, lhs);
state->Reg[DESTReg] = ARMul_LoadWordN(state, lhs + 4);
break;
}
if ((BITS (4, 11) & 0xF9) == 0x9) if ((BITS (4, 11) & 0xF9) == 0x9)
/* LDR register offset, write-back, up, pre indexed. */ /* LDR register offset, write-back, up, pre indexed. */
LHPREUPWB (); LHPREUPWB ();
/* Continue with remaining instruction decoding. */ /* Continue with remaining instruction decoding. */
#endif #endif
dest = DPSRegRHS; dest = DPSRegRHS;
WRITESDEST (dest); WRITESDEST (dest);
@ -2297,12 +2337,12 @@ mainswitch:
if (state->currentexval == (u32)ARMul_LoadHalfWord(state, state->currentexaddr))enter = true; if (state->currentexval == (u32)ARMul_LoadHalfWord(state, state->currentexaddr))enter = true;
ARMul_StoreHalfWord(state, lhs, RHS);
//StoreWord(state, lhs, RHS) //StoreWord(state, lhs, RHS)
if (state->Aborted) { if (state->Aborted) {
TAKEABORT; TAKEABORT;
} }
if (enter) { if (enter) {
ARMul_StoreHalfWord(state, lhs, RHS);
state->Reg[DESTReg] = 0; state->Reg[DESTReg] = 0;
} else { } else {
state->Reg[DESTReg] = 1; state->Reg[DESTReg] = 1;
@ -2520,7 +2560,7 @@ mainswitch:
/* TSTP immed. */ /* TSTP immed. */
#ifdef MODE32 #ifdef MODE32
state->Cpsr = GETSPSR (state->Bank); state->Cpsr = GETSPSR (state->Bank);
//ARMul_CPSRAltered (state); ARMul_CPSRAltered (state);
#else #else
temp = LHS & DPImmRHS; temp = LHS & DPImmRHS;
SETR15PSR (temp); SETR15PSR (temp);
@ -2547,7 +2587,7 @@ mainswitch:
/* TEQP immed. */ /* TEQP immed. */
#ifdef MODE32 #ifdef MODE32
state->Cpsr = GETSPSR (state->Bank); state->Cpsr = GETSPSR (state->Bank);
//ARMul_CPSRAltered (state); ARMul_CPSRAltered (state);
#else #else
temp = LHS ^ DPImmRHS; temp = LHS ^ DPImmRHS;
SETR15PSR (temp); SETR15PSR (temp);
@ -2568,7 +2608,7 @@ mainswitch:
/* CMPP immed. */ /* CMPP immed. */
#ifdef MODE32 #ifdef MODE32
state->Cpsr = GETSPSR (state->Bank); state->Cpsr = GETSPSR (state->Bank);
//ARMul_CPSRAltered (state); ARMul_CPSRAltered (state);
#else #else
temp = LHS - DPImmRHS; temp = LHS - DPImmRHS;
SETR15PSR (temp); SETR15PSR (temp);
@ -2604,7 +2644,7 @@ mainswitch:
/* CMNP immed. */ /* CMNP immed. */
#ifdef MODE32 #ifdef MODE32
state->Cpsr = GETSPSR (state->Bank); state->Cpsr = GETSPSR (state->Bank);
//ARMul_CPSRAltered (state); ARMul_CPSRAltered (state);
#else #else
temp = LHS + DPImmRHS; temp = LHS + DPImmRHS;
SETR15PSR (temp); SETR15PSR (temp);
@ -3055,17 +3095,14 @@ mainswitch:
case 0x68: /* Store Word, No WriteBack, Post Inc, Reg. */ case 0x68: /* Store Word, No WriteBack, Post Inc, Reg. */
//ichfly PKHBT PKHTB todo check this //ichfly PKHBT PKHTB todo check this
if ((instr & 0x70) == 0x10) //pkhbt if ((instr & 0x70) == 0x10) { //pkhbt
{
u8 idest = BITS(12, 15); u8 idest = BITS(12, 15);
u8 rfis = BITS(16, 19); u8 rfis = BITS(16, 19);
u8 rlast = BITS(0, 3); u8 rlast = BITS(0, 3);
u8 ishi = BITS(7,11); u8 ishi = BITS(7,11);
state->Reg[idest] = (state->Reg[rfis] & 0xFFFF) | ((state->Reg[rlast] << ishi) & 0xFFFF0000); state->Reg[idest] = (state->Reg[rfis] & 0xFFFF) | ((state->Reg[rlast] << ishi) & 0xFFFF0000);
break; break;
} } else if ((instr & 0x70) == 0x50) { //pkhtb
else if ((instr & 0x70) == 0x50)//pkhtb
{
u8 idest = BITS(12, 15); u8 idest = BITS(12, 15);
u8 rfis = BITS(16, 19); u8 rfis = BITS(16, 19);
u8 rlast = BITS(0, 3); u8 rlast = BITS(0, 3);
@ -3073,8 +3110,7 @@ mainswitch:
if (ishi == 0)ishi = 0x20; if (ishi == 0)ishi = 0x20;
state->Reg[idest] = (((int)(state->Reg[rlast]) >> (int)(ishi))& 0xFFFF) | ((state->Reg[rfis]) & 0xFFFF0000); state->Reg[idest] = (((int)(state->Reg[rlast]) >> (int)(ishi))& 0xFFFF) | ((state->Reg[rfis]) & 0xFFFF0000);
break; break;
} } else if (BIT (4)) {
else if (BIT (4)) {
#ifdef MODE32 #ifdef MODE32
if (state->is_v6 if (state->is_v6
&& handle_v6_insn (state, instr)) && handle_v6_insn (state, instr))
@ -3686,13 +3722,11 @@ mainswitch:
/* Co-Processor Data Transfers. */ /* Co-Processor Data Transfers. */
case 0xc4: case 0xc4:
if ((instr & 0x0FF00FF0) == 0xC400B10) //vmov BIT(0-3), BIT(12-15), BIT(16-20), vmov d0, r0, r0 if ((instr & 0x0FF00FF0) == 0xC400B10) { //vmov BIT(0-3), BIT(12-15), BIT(16-20), vmov d0, r0, r0
{
state->ExtReg[BITS(0, 3) << 1] = state->Reg[BITS(12, 15)]; state->ExtReg[BITS(0, 3) << 1] = state->Reg[BITS(12, 15)];
state->ExtReg[(BITS(0, 3) << 1) + 1] = state->Reg[BITS(16, 20)]; state->ExtReg[(BITS(0, 3) << 1) + 1] = state->Reg[BITS(16, 20)];
break; break;
} } else if (state->is_v5) {
else if (state->is_v5) {
/* Reading from R15 is UNPREDICTABLE. */ /* Reading from R15 is UNPREDICTABLE. */
if (BITS (12, 15) == 15 || BITS (16, 19) == 15) if (BITS (12, 15) == 15 || BITS (16, 19) == 15)
ARMul_UndefInstr (state, instr); ARMul_UndefInstr (state, instr);
@ -3712,22 +3746,18 @@ mainswitch:
break; break;
case 0xc5: case 0xc5:
if ((instr & 0x00000FF0) == 0xB10) //vmov BIT(12-15), BIT(16-20), BIT(0-3) vmov r0, r0, d0 if ((instr & 0x00000FF0) == 0xB10) { //vmov BIT(12-15), BIT(16-20), BIT(0-3) vmov r0, r0, d0
{
state->Reg[BITS(12, 15)] = state->ExtReg[BITS(0, 3) << 1]; state->Reg[BITS(12, 15)] = state->ExtReg[BITS(0, 3) << 1];
state->Reg[BITS(16, 19)] = state->ExtReg[(BITS(0, 3) << 1) + 1]; state->Reg[BITS(16, 19)] = state->ExtReg[(BITS(0, 3) << 1) + 1];
break; break;
} } else if (state->is_v5) {
else if (state->is_v5) {
/* Writes to R15 are UNPREDICATABLE. */ /* Writes to R15 are UNPREDICATABLE. */
if (DESTReg == 15 || LHSReg == 15) if (DESTReg == 15 || LHSReg == 15)
ARMul_UndefInstr (state, instr); ARMul_UndefInstr (state, instr);
/* Is access to the coprocessor allowed ? */ /* Is access to the coprocessor allowed ? */
else if (!CP_ACCESS_ALLOWED(state, CPNum)) else if (!CP_ACCESS_ALLOWED(state, CPNum)) {
{
ARMul_UndefInstr(state, instr); ARMul_UndefInstr(state, instr);
} } else {
else {
/* MRRC, ARMv5TE and up */ /* MRRC, ARMv5TE and up */
ARMul_MRRC (state, instr, &DEST, &(state->Reg[LHSReg])); ARMul_MRRC (state, instr, &DEST, &(state->Reg[LHSReg]));
break; break;
@ -4565,7 +4595,7 @@ out:
#ifdef MODE32 #ifdef MODE32
if (state->Bank > 0) { if (state->Bank > 0) {
state->Cpsr = state->Spsr[state->Bank]; state->Cpsr = state->Spsr[state->Bank];
//ARMul_CPSRAltered (state); ARMul_CPSRAltered (state);
} }
#ifdef MODET #ifdef MODET
if (TFLAG) if (TFLAG)
@ -5256,7 +5286,7 @@ L_ldm_s_makeabort:
//chy 2006-02-16 , should not consider system mode, don't conside 26bit mode //chy 2006-02-16 , should not consider system mode, don't conside 26bit mode
if (state->Mode != USER26MODE && state->Mode != USER32MODE ) { if (state->Mode != USER26MODE && state->Mode != USER32MODE ) {
state->Cpsr = GETSPSR (state->Bank); state->Cpsr = GETSPSR (state->Bank);
//ARMul_CPSRAltered (state); ARMul_CPSRAltered (state);
} }
WriteR15 (state, PC); WriteR15 (state, PC);
@ -5641,30 +5671,9 @@ L_stm_s_takeabort:
static int static int
handle_v6_insn (ARMul_State * state, ARMword instr) { handle_v6_insn (ARMul_State * state, ARMword instr) {
switch (BITS (20, 27)) { ARMword lhs, temp;
//ichfly
case 0x66: //UQSUB8
if ((instr & 0x0FF00FF0) == 0x06600FF0) {
u32 rd = (instr >> 12) & 0xF;
u32 rm = (instr >> 16) & 0xF;
u32 rn = (instr >> 0) & 0xF;
u32 subfrom = state->Reg[rm];
u32 tosub = state->Reg[rn];
u8 b1 = (u8)((u8)(subfrom)-(u8)(tosub)); switch (BITS (20, 27)) {
if (b1 > (u8)(subfrom)) b1 = 0;
u8 b2 = (u8)((u8)(subfrom >> 8) - (u8)(tosub >> 8));
if (b2 > (u8)(subfrom >> 8)) b2 = 0;
u8 b3 = (u8)((u8)(subfrom >> 16) - (u8)(tosub >> 16));
if (b3 > (u8)(subfrom >> 16)) b3 = 0;
u8 b4 = (u8)((u8)(subfrom >> 24) - (u8)(tosub >> 24));
if (b4 > (u8)(subfrom >> 24)) b4 = 0;
state->Reg[rd] = (u32)(b1 | b2 << 8 | b3 << 16 | b4 << 24);
return 1;
} else {
printf("UQSUB8 decoding fail %08X",instr);
}
#if 0
case 0x03: case 0x03:
printf ("Unhandled v6 insn: ldr\n"); printf ("Unhandled v6 insn: ldr\n");
break; break;
@ -5678,9 +5687,43 @@ L_stm_s_takeabort:
printf ("Unhandled v6 insn: smi\n"); printf ("Unhandled v6 insn: smi\n");
break; break;
case 0x18: case 0x18:
if (BITS(4, 7) == 0x9) {
/* strex */
u32 l = LHSReg;
u32 r = RHSReg;
lhs = LHS;
bool enter = false;
if (state->currentexval == (u32)ARMul_ReadWord(state, state->currentexaddr))enter = true;
//StoreWord(state, lhs, RHS)
if (state->Aborted) {
TAKEABORT;
}
if (enter) {
ARMul_StoreWordS(state, lhs, RHS);
state->Reg[DESTReg] = 0;
}
else {
state->Reg[DESTReg] = 1;
}
return 1;
}
printf ("Unhandled v6 insn: strex\n"); printf ("Unhandled v6 insn: strex\n");
break; break;
case 0x19: case 0x19:
/* ldrex */
if (BITS(4, 7) == 0x9) {
lhs = LHS;
state->currentexaddr = lhs;
state->currentexval = ARMul_ReadWord(state, lhs);
LoadWord(state, instr, lhs);
return 1;
}
printf ("Unhandled v6 insn: ldrex\n"); printf ("Unhandled v6 insn: ldrex\n");
break; break;
case 0x1a: case 0x1a:
@ -5690,9 +5733,52 @@ L_stm_s_takeabort:
printf ("Unhandled v6 insn: ldrexd\n"); printf ("Unhandled v6 insn: ldrexd\n");
break; break;
case 0x1c: case 0x1c:
if (BITS(4, 7) == 0x9) {
/* strexb */
lhs = LHS;
bool enter = false;
if (state->currentexval == (u32)ARMul_ReadByte(state, state->currentexaddr))enter = true;
BUSUSEDINCPCN;
if (state->Aborted) {
TAKEABORT;
}
if (enter) {
ARMul_StoreByte(state, lhs, RHS);
state->Reg[DESTReg] = 0;
}
else {
state->Reg[DESTReg] = 1;
}
//printf("In %s, strexb not implemented\n", __FUNCTION__);
UNDEF_LSRBPC;
/* WRITESDEST (dest); */
return 1;
}
printf ("Unhandled v6 insn: strexb\n"); printf ("Unhandled v6 insn: strexb\n");
break; break;
case 0x1d: case 0x1d:
if ((BITS(4, 7)) == 0x9) {
/* ldrexb */
temp = LHS;
LoadByte(state, instr, temp, LUNSIGNED);
state->currentexaddr = temp;
state->currentexval = (u32)ARMul_ReadByte(state, temp);
//state->Reg[BITS(12, 15)] = ARMul_LoadByte(state, state->Reg[BITS(16, 19)]);
//printf("ldrexb\n");
//printf("instr is %x rm is %d\n", instr, BITS(16, 19));
//exit(-1);
//printf("In %s, ldrexb not implemented\n", __FUNCTION__);
return 1;
}
printf ("Unhandled v6 insn: ldrexb\n"); printf ("Unhandled v6 insn: ldrexb\n");
break; break;
case 0x1e: case 0x1e:
@ -5713,10 +5799,8 @@ L_stm_s_takeabort:
case 0x3f: case 0x3f:
printf ("Unhandled v6 insn: rbit\n"); printf ("Unhandled v6 insn: rbit\n");
break; break;
#endif
case 0x61: case 0x61:
if ((instr & 0xFF0) == 0xf70)//ssub16 if ((instr & 0xFF0) == 0xf70) { //ssub16
{
u8 tar = BITS(12, 15); u8 tar = BITS(12, 15);
u8 src1 = BITS(16, 19); u8 src1 = BITS(16, 19);
u8 src2 = BITS(0, 3); u8 src2 = BITS(0, 3);
@ -5724,11 +5808,9 @@ L_stm_s_takeabort:
s16 a2 = ((state->Reg[src1] >> 0x10) & 0xFFFF); s16 a2 = ((state->Reg[src1] >> 0x10) & 0xFFFF);
s16 b1 = (state->Reg[src2] & 0xFFFF); s16 b1 = (state->Reg[src2] & 0xFFFF);
s16 b2 = ((state->Reg[src2] >> 0x10) & 0xFFFF); s16 b2 = ((state->Reg[src2] >> 0x10) & 0xFFFF);
state->Reg[tar] = ((a1 - a2) & 0xFFFF) | (((b1 - b2)&0xFFFF)<< 0x10); state->Reg[tar] = ((a1 - a2) & 0xFFFF) | (((b1 - b2) & 0xFFFF) << 0x10);
return 1; return 1;
} } else if ((instr & 0xFF0) == 0xf10) { //sadd16
else if ((instr & 0xFF0) == 0xf10)//sadd16
{
u8 tar = BITS(12, 15); u8 tar = BITS(12, 15);
u8 src1 = BITS(16, 19); u8 src1 = BITS(16, 19);
u8 src2 = BITS(0, 3); u8 src2 = BITS(0, 3);
@ -5736,11 +5818,9 @@ L_stm_s_takeabort:
s16 a2 = ((state->Reg[src1] >> 0x10) & 0xFFFF); s16 a2 = ((state->Reg[src1] >> 0x10) & 0xFFFF);
s16 b1 = (state->Reg[src2] & 0xFFFF); s16 b1 = (state->Reg[src2] & 0xFFFF);
s16 b2 = ((state->Reg[src2] >> 0x10) & 0xFFFF); s16 b2 = ((state->Reg[src2] >> 0x10) & 0xFFFF);
state->Reg[tar] = ((a1 + a2) & 0xFFFF) | (((b1 + b2)&0xFFFF)<< 0x10); state->Reg[tar] = ((a1 + a2) & 0xFFFF) | (((b1 + b2) & 0xFFFF) << 0x10);
return 1; return 1;
} } else if ((instr & 0xFF0) == 0xf50) { //ssax
else if ((instr & 0xFF0) == 0xf50)//ssax
{
u8 tar = BITS(12, 15); u8 tar = BITS(12, 15);
u8 src1 = BITS(16, 19); u8 src1 = BITS(16, 19);
u8 src2 = BITS(0, 3); u8 src2 = BITS(0, 3);
@ -5750,9 +5830,7 @@ L_stm_s_takeabort:
s16 b2 = ((state->Reg[src2] >> 0x10) & 0xFFFF); s16 b2 = ((state->Reg[src2] >> 0x10) & 0xFFFF);
state->Reg[tar] = ((a1 + b2) & 0xFFFF) | (((a2 - b1) & 0xFFFF) << 0x10); state->Reg[tar] = ((a1 + b2) & 0xFFFF) | (((a2 - b1) & 0xFFFF) << 0x10);
return 1; return 1;
} } else if ((instr & 0xFF0) == 0xf30) { //sasx
else if ((instr & 0xFF0) == 0xf30)//sasx
{
u8 tar = BITS(12, 15); u8 tar = BITS(12, 15);
u8 src1 = BITS(16, 19); u8 src1 = BITS(16, 19);
u8 src2 = BITS(0, 3); u8 src2 = BITS(0, 3);
@ -5762,12 +5840,10 @@ L_stm_s_takeabort:
s16 b2 = ((state->Reg[src2] >> 0x10) & 0xFFFF); s16 b2 = ((state->Reg[src2] >> 0x10) & 0xFFFF);
state->Reg[tar] = ((a1 - b2) & 0xFFFF) | (((a2 + b1) & 0xFFFF) << 0x10); state->Reg[tar] = ((a1 - b2) & 0xFFFF) | (((a2 + b1) & 0xFFFF) << 0x10);
return 1; return 1;
} } else printf ("Unhandled v6 insn: sadd/ssub/ssax/sasx\n");
else printf ("Unhandled v6 insn: sadd/ssub\n");
break; break;
case 0x62: case 0x62:
if ((instr & 0xFF0) == 0xf70)//QSUB16 if ((instr & 0xFF0) == 0xf70) { //QSUB16
{
u8 tar = BITS(12, 15); u8 tar = BITS(12, 15);
u8 src1 = BITS(16, 19); u8 src1 = BITS(16, 19);
u8 src2 = BITS(0, 3); u8 src2 = BITS(0, 3);
@ -5783,9 +5859,7 @@ L_stm_s_takeabort:
if (res2 < 0x7FFF) res2 = -0x8000; if (res2 < 0x7FFF) res2 = -0x8000;
state->Reg[tar] = (res1 & 0xFFFF) | ((res2 & 0xFFFF) << 0x10); state->Reg[tar] = (res1 & 0xFFFF) | ((res2 & 0xFFFF) << 0x10);
return 1; return 1;
} } else if ((instr & 0xFF0) == 0xf10) { //QADD16
else if ((instr & 0xFF0) == 0xf10)//QADD16
{
u8 tar = BITS(12, 15); u8 tar = BITS(12, 15);
u8 src1 = BITS(16, 19); u8 src1 = BITS(16, 19);
u8 src2 = BITS(0, 3); u8 src2 = BITS(0, 3);
@ -5801,205 +5875,129 @@ L_stm_s_takeabort:
if (res2 < 0x7FFF) res2 = -0x8000; if (res2 < 0x7FFF) res2 = -0x8000;
state->Reg[tar] = ((res1) & 0xFFFF) | (((res2) & 0xFFFF) << 0x10); state->Reg[tar] = ((res1) & 0xFFFF) | (((res2) & 0xFFFF) << 0x10);
return 1; return 1;
} } else printf ("Unhandled v6 insn: qadd16/qsub16\n");
else printf ("Unhandled v6 insn: qadd/qsub\n");
break; break;
#if 0
case 0x63: case 0x63:
printf ("Unhandled v6 insn: shadd/shsub\n"); printf ("Unhandled v6 insn: shadd/shsub\n");
break; break;
case 0x65: case 0x65:
printf ("Unhandled v6 insn: uadd/usub\n"); {
u32 rd = (instr >> 12) & 0xF;
u32 rn = (instr >> 16) & 0xF;
u32 rm = (instr >> 0) & 0xF;
u32 from = state->Reg[rn];
u32 to = state->Reg[rm];
if ((instr & 0xFF0) == 0xF10 || (instr & 0xFF0) == 0xF70) { // UADD16/USUB16
u32 h1, h2;
state->Cpsr &= 0xfff0ffff;
if ((instr & 0x0F0) == 0x070) { // USUB16
h1 = ((u16)from - (u16)to);
h2 = ((u16)(from >> 16) - (u16)(to >> 16));
if (!(h1 & 0xffff0000)) state->Cpsr |= (3 << 16);
if (!(h2 & 0xffff0000)) state->Cpsr |= (3 << 18);
}
else { // UADD16
h1 = ((u16)from + (u16)to);
h2 = ((u16)(from >> 16) + (u16)(to >> 16));
if (h1 & 0xffff0000) state->Cpsr |= (3 << 16);
if (h2 & 0xffff0000) state->Cpsr |= (3 << 18);
}
state->Reg[rd] = (u32)((h1 & 0xffff) | ((h2 & 0xffff) << 16));
return 1;
}
else
if ((instr & 0xFF0) == 0xF90 || (instr & 0xFF0) == 0xFF0) { // UADD8/USUB8
u32 b1, b2, b3, b4;
state->Cpsr &= 0xfff0ffff;
if ((instr & 0x0F0) == 0x0F0) { // USUB8
b1 = ((u8)from - (u8)to);
b2 = ((u8)(from >> 8) - (u8)(to >> 8));
b3 = ((u8)(from >> 16) - (u8)(to >> 16));
b4 = ((u8)(from >> 24) - (u8)(to >> 24));
if (!(b1 & 0xffffff00)) state->Cpsr |= (1 << 16);
if (!(b2 & 0xffffff00)) state->Cpsr |= (1 << 17);
if (!(b3 & 0xffffff00)) state->Cpsr |= (1 << 18);
if (!(b4 & 0xffffff00)) state->Cpsr |= (1 << 19);
}
else { // UADD8
b1 = ((u8)from + (u8)to);
b2 = ((u8)(from >> 8) + (u8)(to >> 8));
b3 = ((u8)(from >> 16) + (u8)(to >> 16));
b4 = ((u8)(from >> 24) + (u8)(to >> 24));
if (b1 & 0xffffff00) state->Cpsr |= (1 << 16);
if (b2 & 0xffffff00) state->Cpsr |= (1 << 17);
if (b3 & 0xffffff00) state->Cpsr |= (1 << 18);
if (b4 & 0xffffff00) state->Cpsr |= (1 << 19);
}
state->Reg[rd] = (u32)(b1 | (b2 & 0xff) << 8 | (b3 & 0xff) << 16 | (b4 & 0xff) << 24);
return 1;
}
}
printf("Unhandled v6 insn: uasx/usax\n");
break; break;
case 0x66: case 0x66:
printf ("Unhandled v6 insn: uqadd/uqsub\n"); if ((instr & 0x0FF00FF0) == 0x06600FF0) { //uqsub8
u32 rd = (instr >> 12) & 0xF;
u32 rm = (instr >> 16) & 0xF;
u32 rn = (instr >> 0) & 0xF;
u32 subfrom = state->Reg[rm];
u32 tosub = state->Reg[rn];
u8 b1 = (u8)((u8)(subfrom)-(u8)(tosub));
if (b1 > (u8)(subfrom)) b1 = 0;
u8 b2 = (u8)((u8)(subfrom >> 8) - (u8)(tosub >> 8));
if (b2 > (u8)(subfrom >> 8)) b2 = 0;
u8 b3 = (u8)((u8)(subfrom >> 16) - (u8)(tosub >> 16));
if (b3 > (u8)(subfrom >> 16)) b3 = 0;
u8 b4 = (u8)((u8)(subfrom >> 24) - (u8)(tosub >> 24));
if (b4 > (u8)(subfrom >> 24)) b4 = 0;
state->Reg[rd] = (u32)(b1 | b2 << 8 | b3 << 16 | b4 << 24);
return 1;
} else {
printf ("Unhandled v6 insn: uqsub16\n");
}
break; break;
case 0x67: case 0x67:
printf ("Unhandled v6 insn: uhadd/uhsub\n"); printf ("Unhandled v6 insn: uhadd/uhsub\n");
break; break;
case 0x68: case 0x68:
printf ("Unhandled v6 insn: pkh/sxtab/selsxtb\n");
break;
#endif
case 0x6c:
if ((instr & 0xf03f0) == 0xf0070) //uxtb16
{ {
u8 src1 = BITS(0, 3); u32 rd = (instr >> 12) & 0xF;
u8 tar = BITS(12, 15); u32 rn = (instr >> 16) & 0xF;
u32 base = state->Reg[src1]; u32 rm = (instr >> 0) & 0xF;
u32 shamt = BITS(9,10)* 8; u32 from = state->Reg[rn];
u32 in = ((base << (32 - shamt)) | (base >> shamt)); u32 to = state->Reg[rm];
state->Reg[tar] = in & 0x00FF00FF; u32 cpsr = state->Cpsr;
return 1; if ((instr & 0xFF0) == 0xFB0) { // SEL
} u32 result;
if (cpsr & (1 << 16))
result = from & 0xff;
else else
printf ("Unhandled v6 insn: uxtb16/uxtab16\n"); result = to & 0xff;
break; if (cpsr & (1 << 17))
case 0x70: result |= from & 0x0000ff00;
if ((instr & 0xf0d0) == 0xf010)//smuad //ichfly else
{ result |= to & 0x0000ff00;
u8 tar = BITS(16, 19); if (cpsr & (1 << 18))
u8 src1 = BITS(0, 3); result |= from & 0x00ff0000;
u8 src2 = BITS(8, 11); else
u8 swap = BIT(5); result |= to & 0x00ff0000;
s16 a1 = (state->Reg[src1] & 0xFFFF); if (cpsr & (1 << 19))
s16 a2 = ((state->Reg[src1] >> 0x10) & 0xFFFF); result |= from & 0xff000000;
s16 b1 = swap ? ((state->Reg[src2] >> 0x10) & 0xFFFF) : (state->Reg[src2] & 0xFFFF); else
s16 b2 = swap ? (state->Reg[src2] & 0xFFFF) : ((state->Reg[src2] >> 0x10) & 0xFFFF); result |= to & 0xff000000;
state->Reg[tar] = a1*a2 + b1*b2; state->Reg[rd] = result;
return 1;
}
else if ((instr & 0xf0d0) == 0xf050)//smusd
{
u8 tar = BITS(16, 19);
u8 src1 = BITS(0, 3);
u8 src2 = BITS(8, 11);
u8 swap = BIT(5);
s16 a1 = (state->Reg[src1] & 0xFFFF);
s16 a2 = ((state->Reg[src1] >> 0x10) & 0xFFFF);
s16 b1 = swap ? ((state->Reg[src2] >> 0x10) & 0xFFFF) : (state->Reg[src2] & 0xFFFF);
s16 b2 = swap ? (state->Reg[src2] & 0xFFFF) : ((state->Reg[src2] >> 0x10) & 0xFFFF);
state->Reg[tar] = a1*a2 - b1*b2;
return 1; return 1;
} }
else if ((instr & 0xd0) == 0x10)//smlad
{
u8 tar = BITS(16, 19);
u8 src1 = BITS(0, 3);
u8 src2 = BITS(8, 11);
u8 src3 = BITS(12, 15);
u8 swap = BIT(5);
u32 a3 = state->Reg[src3];
s16 a1 = (state->Reg[src1] & 0xFFFF);
s16 a2 = ((state->Reg[src1] >> 0x10) & 0xFFFF);
s16 b1 = swap ? ((state->Reg[src2] >> 0x10) & 0xFFFF) : (state->Reg[src2] & 0xFFFF);
s16 b2 = swap ? (state->Reg[src2] & 0xFFFF) : ((state->Reg[src2] >> 0x10) & 0xFFFF);
state->Reg[tar] = a1*a2 + b1*b2 + a3;
return 1;
} }
else printf ("Unhandled v6 insn: smuad/smusd/smlad/smlsd\n"); printf("Unhandled v6 insn: pkh/sxtab/selsxtb\n");
break; break;
case 0x74:
printf ("Unhandled v6 insn: smlald/smlsld\n");
break;
case 0x75:
printf ("Unhandled v6 insn: smmla/smmls/smmul\n");
break;
case 0x78:
printf ("Unhandled v6 insn: usad/usada8\n");
break;
#if 0
case 0x7a:
printf ("Unhandled v6 insn: usbfx\n");
break;
case 0x7c:
printf ("Unhandled v6 insn: bfc/bfi\n");
break;
#endif
/* add new instr for arm v6. */
ARMword lhs, temp;
case 0x18: { /* ORR reg */
/* dyf add armv6 instr strex 2010.9.17 */
if (BITS (4, 7) == 0x9) {
u32 l = LHSReg;
u32 r = RHSReg;
lhs = LHS;
bool enter = false;
if (state->currentexval == (u32)ARMul_ReadWord(state, state->currentexaddr))enter = true;
ARMul_StoreWordS(state, lhs, RHS);
//StoreWord(state, lhs, RHS)
if (state->Aborted) {
TAKEABORT;
}
if (enter) {
state->Reg[DESTReg] = 0;
} else {
state->Reg[DESTReg] = 1;
}
return 1;
}
break;
}
case 0x19: { /* orrs reg */
/* dyf add armv6 instr ldrex */
if (BITS (4, 7) == 0x9) {
lhs = LHS;
state->currentexaddr = lhs;
state->currentexval = ARMul_ReadWord(state, lhs);
LoadWord (state, instr, lhs);
return 1;
}
break;
}
case 0x1c: { /* BIC reg */
/* dyf add for STREXB */
if (BITS (4, 7) == 0x9) {
lhs = LHS;
bool enter = false;
if (state->currentexval == (u32)ARMul_ReadByte(state, state->currentexaddr))enter = true;
ARMul_StoreByte (state, lhs, RHS);
BUSUSEDINCPCN;
if (state->Aborted) {
TAKEABORT;
}
if (enter) {
state->Reg[DESTReg] = 0;
} else {
state->Reg[DESTReg] = 1;
}
//printf("In %s, strexb not implemented\n", __FUNCTION__);
UNDEF_LSRBPC;
/* WRITESDEST (dest); */
return 1;
}
break;
}
case 0x1d: { /* BICS reg */
if ((BITS (4, 7)) == 0x9) {
/* ldrexb */
temp = LHS;
LoadByte (state, instr, temp, LUNSIGNED);
state->currentexaddr = temp;
state->currentexval = (u32)ARMul_ReadByte(state, temp);
//state->Reg[BITS(12, 15)] = ARMul_LoadByte(state, state->Reg[BITS(16, 19)]);
//printf("ldrexb\n");
//printf("instr is %x rm is %d\n", instr, BITS(16, 19));
//exit(-1);
//printf("In %s, ldrexb not implemented\n", __FUNCTION__);
return 1;
}
break;
}
/* add end */
case 0x6a: { case 0x6a: {
ARMword Rm; ARMword Rm;
int ror = -1; int ror = -1;
switch (BITS (4, 11)) { switch (BITS(4, 11)) {
case 0x07: case 0x07:
ror = 0; ror = 0;
break; break;
@ -6018,19 +6016,19 @@ L_stm_s_takeabort:
//ichfly //ichfly
//SSAT16 //SSAT16
{ {
u8 tar = BITS(12,15); u8 tar = BITS(12, 15);
u8 src = BITS(0, 3); u8 src = BITS(0, 3);
u8 val = BITS(16, 19) + 1; u8 val = BITS(16, 19) + 1;
s16 a1 = (state->Reg[src]); s16 a1 = (state->Reg[src]);
s16 a2 = (state->Reg[src] >> 0x10); s16 a2 = (state->Reg[src] >> 0x10);
s16 min = (s16)(0x8000) >> (16 - val); s16 min = (s16)(0x8000 >> (16 - val));
s16 max = 0x7FFF >> (16 - val); s16 max = 0x7FFF >> (16 - val);
if (min > a1) a1 = min; if (min > a1) a1 = min;
if (max < a1) a1 = max; if (max < a1) a1 = max;
if (min > a2) a2 = min; if (min > a2) a2 = min;
if (max < a2) a2 = max; if (max < a2) a2 = max;
u32 temp2 = ((u32)(a2)) << 0x10; u32 temp2 = ((u32)(a2)) << 0x10;
state->Reg[tar] = (a1&0xFFFF) | (temp2); state->Reg[tar] = (a1 & 0xFFFF) | (temp2);
} }
return 1; return 1;
@ -6039,31 +6037,31 @@ L_stm_s_takeabort:
} }
if (ror == -1) { if (ror == -1) {
if (BITS (4, 6) == 0x7) { if (BITS(4, 6) == 0x7) {
printf ("Unhandled v6 insn: ssat\n"); printf("Unhandled v6 insn: ssat\n");
return 0; return 0;
} }
break; break;
} }
Rm = ((state->Reg[BITS (0, 3)] >> ror) & 0xFF); Rm = ((state->Reg[BITS(0, 3)] >> ror) & 0xFF);
if (Rm & 0x80) if (Rm & 0x80)
Rm |= 0xffffff00; Rm |= 0xffffff00;
if (BITS (16, 19) == 0xf) if (BITS(16, 19) == 0xf)
/* SXTB */ /* SXTB */
state->Reg[BITS (12, 15)] = Rm; state->Reg[BITS(12, 15)] = Rm;
else else
/* SXTAB */ /* SXTAB */
state->Reg[BITS (12, 15)] += Rm; state->Reg[BITS(12, 15)] += Rm;
}
return 1;
return 1;
}
case 0x6b: { case 0x6b: {
ARMword Rm; ARMword Rm;
int ror = -1; int ror = -1;
switch (BITS (4, 11)) { switch (BITS(4, 11)) {
case 0x07: case 0x07:
ror = 0; ror = 0;
break; break;
@ -6090,24 +6088,36 @@ L_stm_s_takeabort:
if (ror == -1) if (ror == -1)
break; break;
Rm = ((state->Reg[BITS (0, 3)] >> ror) & 0xFFFF); Rm = ((state->Reg[BITS(0, 3)] >> ror) & 0xFFFF);
if (Rm & 0x8000) if (Rm & 0x8000)
Rm |= 0xffff0000; Rm |= 0xffff0000;
if (BITS (16, 19) == 0xf) if (BITS(16, 19) == 0xf)
/* SXTH */ /* SXTH */
state->Reg[BITS (12, 15)] = Rm; state->Reg[BITS(12, 15)] = Rm;
else else
/* SXTAH */ /* SXTAH */
state->Reg[BITS (12, 15)] = state->Reg[BITS (16, 19)] + Rm; state->Reg[BITS(12, 15)] = state->Reg[BITS(16, 19)] + Rm;
}
return 1;
return 1;
}
case 0x6c:
if ((instr & 0xf03f0) == 0xf0070) { //uxtb16
u8 src1 = BITS(0, 3);
u8 tar = BITS(12, 15);
u32 base = state->Reg[src1];
u32 shamt = BITS(9,10)* 8;
u32 in = ((base << (32 - shamt)) | (base >> shamt));
state->Reg[tar] = in & 0x00FF00FF;
return 1;
} else
printf ("Unhandled v6 insn: uxtab16\n");
break;
case 0x6e: { case 0x6e: {
ARMword Rm; ARMword Rm;
int ror = -1; int ror = -1;
switch (BITS (4, 11)) { switch (BITS(4, 11)) {
case 0x07: case 0x07:
ror = 0; ror = 0;
break; break;
@ -6143,29 +6153,30 @@ L_stm_s_takeabort:
} }
if (ror == -1) { if (ror == -1) {
if (BITS (4, 6) == 0x7) { if (BITS(4, 6) == 0x7) {
printf ("Unhandled v6 insn: usat\n"); printf("Unhandled v6 insn: usat\n");
return 0; return 0;
} }
break; break;
} }
Rm = ((state->Reg[BITS (0, 3)] >> ror) & 0xFF); Rm = ((state->Reg[BITS(0, 3)] >> ror) & 0xFF);
if (BITS (16, 19) == 0xf) if (BITS(16, 19) == 0xf)
/* UXTB */ /* UXTB */
state->Reg[BITS (12, 15)] = Rm; state->Reg[BITS(12, 15)] = Rm;
else else
/* UXTAB */ /* UXTAB */
state->Reg[BITS (12, 15)] = state->Reg[BITS (16, 19)] + Rm; state->Reg[BITS(12, 15)] = state->Reg[BITS(16, 19)] + Rm;
}
return 1; return 1;
}
case 0x6f: { case 0x6f: {
ARMword Rm; ARMword Rm;
int ror = -1; int ror = -1;
switch (BITS (4, 11)) { switch (BITS(4, 11)) {
case 0x07: case 0x07:
ror = 0; ror = 0;
break; break;
@ -6180,7 +6191,7 @@ L_stm_s_takeabort:
break; break;
case 0xfb: case 0xfb:
printf ("Unhandled v6 insn: revsh\n"); printf("Unhandled v6 insn: revsh\n");
return 0; return 0;
default: default:
break; break;
@ -6189,31 +6200,86 @@ L_stm_s_takeabort:
if (ror == -1) if (ror == -1)
break; break;
Rm = ((state->Reg[BITS (0, 3)] >> ror) & 0xFFFF); Rm = ((state->Reg[BITS(0, 3)] >> ror) & 0xFFFF);
/* UXT */ /* UXT */
/* state->Reg[BITS (12, 15)] = Rm; */ /* state->Reg[BITS (12, 15)] = Rm; */
/* dyf add */ /* dyf add */
if (BITS (16, 19) == 0xf) { if (BITS(16, 19) == 0xf) {
state->Reg[BITS (12, 15)] = (Rm >> (8 * BITS(10, 11))) & 0x0000FFFF; state->Reg[BITS(12, 15)] = (Rm >> (8 * BITS(10, 11))) & 0x0000FFFF;
} else { }
else {
/* UXTAH */ /* UXTAH */
/* state->Reg[BITS (12, 15)] = state->Reg [BITS (16, 19)] + Rm; */ /* state->Reg[BITS (12, 15)] = state->Reg [BITS (16, 19)] + Rm; */
// printf("rd is %x rn is %x rm is %x rotate is %x\n", state->Reg[BITS (12, 15)], state->Reg[BITS (16, 19)] // printf("rd is %x rn is %x rm is %x rotate is %x\n", state->Reg[BITS (12, 15)], state->Reg[BITS (16, 19)]
// , Rm, BITS(10, 11)); // , Rm, BITS(10, 11));
// printf("icounter is %lld\n", state->NumInstrs); // printf("icounter is %lld\n", state->NumInstrs);
state->Reg[BITS (12, 15)] = (state->Reg[BITS (16, 19)] >> (8 * (BITS(10, 11)))) + Rm; state->Reg[BITS(12, 15)] = (state->Reg[BITS(16, 19)] >> (8 * (BITS(10, 11)))) + Rm;
// printf("rd is %x\n", state->Reg[BITS (12, 15)]); // printf("rd is %x\n", state->Reg[BITS (12, 15)]);
// exit(-1); // exit(-1);
} }
return 1;
} }
case 0x70:
if ((instr & 0xf0d0) == 0xf010) { //smuad //ichfly
u8 tar = BITS(16, 19);
u8 src1 = BITS(0, 3);
u8 src2 = BITS(8, 11);
u8 swap = BIT(5);
s16 a1 = (state->Reg[src1] & 0xFFFF);
s16 a2 = ((state->Reg[src1] >> 0x10) & 0xFFFF);
s16 b1 = swap ? ((state->Reg[src2] >> 0x10) & 0xFFFF) : (state->Reg[src2] & 0xFFFF);
s16 b2 = swap ? (state->Reg[src2] & 0xFFFF) : ((state->Reg[src2] >> 0x10) & 0xFFFF);
state->Reg[tar] = a1*a2 + b1*b2;
return 1; return 1;
#if 0 } else if ((instr & 0xf0d0) == 0xf050) { //smusd
u8 tar = BITS(16, 19);
u8 src1 = BITS(0, 3);
u8 src2 = BITS(8, 11);
u8 swap = BIT(5);
s16 a1 = (state->Reg[src1] & 0xFFFF);
s16 a2 = ((state->Reg[src1] >> 0x10) & 0xFFFF);
s16 b1 = swap ? ((state->Reg[src2] >> 0x10) & 0xFFFF) : (state->Reg[src2] & 0xFFFF);
s16 b2 = swap ? (state->Reg[src2] & 0xFFFF) : ((state->Reg[src2] >> 0x10) & 0xFFFF);
state->Reg[tar] = a1*a2 - b1*b2;
return 1;
} else if ((instr & 0xd0) == 0x10) { //smlad
u8 tar = BITS(16, 19);
u8 src1 = BITS(0, 3);
u8 src2 = BITS(8, 11);
u8 src3 = BITS(12, 15);
u8 swap = BIT(5);
u32 a3 = state->Reg[src3];
s16 a1 = (state->Reg[src1] & 0xFFFF);
s16 a2 = ((state->Reg[src1] >> 0x10) & 0xFFFF);
s16 b1 = swap ? ((state->Reg[src2] >> 0x10) & 0xFFFF) : (state->Reg[src2] & 0xFFFF);
s16 b2 = swap ? (state->Reg[src2] & 0xFFFF) : ((state->Reg[src2] >> 0x10) & 0xFFFF);
state->Reg[tar] = a1*a2 + b1*b2 + a3;
return 1;
} else printf ("Unhandled v6 insn: smuad/smusd/smlad/smlsd\n");
break;
case 0x74:
printf ("Unhandled v6 insn: smlald/smlsld\n");
break;
case 0x75:
printf ("Unhandled v6 insn: smmla/smmls/smmul\n");
break;
case 0x78:
printf ("Unhandled v6 insn: usad/usada8\n");
break;
case 0x7a:
printf ("Unhandled v6 insn: usbfx\n");
break;
case 0x7c:
printf ("Unhandled v6 insn: bfc/bfi\n");
break;
case 0x84: case 0x84:
printf ("Unhandled v6 insn: srs\n"); printf ("Unhandled v6 insn: srs\n");
break; break;
#endif
default: default:
break; break;
} }

1
src/core/arm/skyeye_common/armdefs.h
View file

@ -281,6 +281,7 @@ struct ARMul_State
ARMword currentexaddr; ARMword currentexaddr;
ARMword currentexval; ARMword currentexval;
ARMword currentexvald;
ARMword servaddr; ARMword servaddr;
unsigned NextInstr; unsigned NextInstr;

7
src/core/arm/skyeye_common/vfp/vfpsingle.cpp
View file

@ -522,8 +522,7 @@ static s64 vfp_single_to_doubleintern(ARMul_State* state, s32 m, u32 fpscr) //ic
if (tm == VFP_QNAN) if (tm == VFP_QNAN)
vdd.significand |= VFP_DOUBLE_SIGNIFICAND_QNAN; vdd.significand |= VFP_DOUBLE_SIGNIFICAND_QNAN;
goto pack_nan; goto pack_nan;
} } else if (tm & VFP_ZERO)
else if (tm & VFP_ZERO)
vdd.exponent = 0; vdd.exponent = 0;
else else
vdd.exponent = vsm.exponent + (1023 - 127); vdd.exponent = vsm.exponent + (1023 - 127);
@ -620,7 +619,7 @@ static u32 vfp_single_ftoui(ARMul_State* state, int sd, int unused, s32 m, u32 f
if (vsm.exponent >= 127 + 32) { if (vsm.exponent >= 127 + 32) {
d = vsm.sign ? 0 : 0xffffffff; d = vsm.sign ? 0 : 0xffffffff;
exceptions = FPSCR_IOC; exceptions = FPSCR_IOC;
} else if (vsm.exponent >= 127 - 1) { } else if (vsm.exponent >= 127) {
int shift = 127 + 31 - vsm.exponent; int shift = 127 + 31 - vsm.exponent;
u32 rem, incr = 0; u32 rem, incr = 0;
@ -705,7 +704,7 @@ static u32 vfp_single_ftosi(ARMul_State* state, int sd, int unused, s32 m, u32 f
if (vsm.sign) if (vsm.sign)
d = ~d; d = ~d;
exceptions |= FPSCR_IOC; exceptions |= FPSCR_IOC;
} else if (vsm.exponent >= 127 - 1) { } else if (vsm.exponent >= 127) {
int shift = 127 + 31 - vsm.exponent; int shift = 127 + 31 - vsm.exponent;
u32 rem, incr = 0; u32 rem, incr = 0;