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Catch more MIPS FPU cornercases, fix addr.ps and mulr.ps instructions. 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2841 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-05-20 13:27:58 +00:00
parent 5f30d62c26
commit 3a5b360dac
2 changed files with 31 additions and 10 deletions
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25
target-mips/op_helper.c
View File

@ -975,13 +975,25 @@ FLOAT_OP(name, d) \
{ \
set_float_exception_flags(0, &env->fp_status); \
FDT2 = float64_ ## name (FDT0, FDT1, &env->fp_status); \
update_fcr31(); \
update_fcr31(); \
if (GET_FP_CAUSE(env->fcr31) & FP_INVALID) \
FDT2 = 0x7ff7ffffffffffffULL; \
else if (GET_FP_CAUSE(env->fcr31) & FP_UNDERFLOW) { \
if ((env->fcr31 & 0x3) == 0) \
FDT2 &= 0x8000000000000000ULL; \
} \
} \
FLOAT_OP(name, s) \
{ \
set_float_exception_flags(0, &env->fp_status); \
FST2 = float32_ ## name (FST0, FST1, &env->fp_status); \
update_fcr31(); \
update_fcr31(); \
if (GET_FP_CAUSE(env->fcr31) & FP_INVALID) \
FST2 = 0x7fbfffff; \
else if (GET_FP_CAUSE(env->fcr31) & FP_UNDERFLOW) { \
if ((env->fcr31 & 0x3) == 0) \
FST2 &= 0x80000000ULL; \
} \
} \
FLOAT_OP(name, ps) \
{ \
@ -989,6 +1001,15 @@ FLOAT_OP(name, ps) \
FST2 = float32_ ## name (FST0, FST1, &env->fp_status); \
FSTH2 = float32_ ## name (FSTH0, FSTH1, &env->fp_status); \
update_fcr31(); \
if (GET_FP_CAUSE(env->fcr31) & FP_INVALID) { \
FST2 = 0x7fbfffff; \
FSTH2 = 0x7fbfffff; \
} else if (GET_FP_CAUSE(env->fcr31) & FP_UNDERFLOW) { \
if ((env->fcr31 & 0x3) == 0) { \
FST2 &= 0x80000000ULL; \
FSTH2 &= 0x80000000ULL; \
} \
} \
}
FLOAT_BINOP(add)
FLOAT_BINOP(sub)

16
target-mips/translate.c
View File

@ -5074,10 +5074,10 @@ static void gen_farith (DisasContext *ctx, uint32_t op1, int ft,
break;
case FOP(24, 22):
gen_op_cp1_64bitmode();
GEN_LOAD_FREG_FTN(WT0, fs);
GEN_LOAD_FREG_FTN(WTH0, fs);
GEN_LOAD_FREG_FTN(WT1, ft);
GEN_LOAD_FREG_FTN(WTH1, ft);
GEN_LOAD_FREG_FTN(WT0, ft);
GEN_LOAD_FREG_FTN(WTH0, ft);
GEN_LOAD_FREG_FTN(WT1, fs);
GEN_LOAD_FREG_FTN(WTH1, fs);
gen_op_float_addr_ps();
GEN_STORE_FTN_FREG(fd, WT2);
GEN_STORE_FTN_FREG(fd, WTH2);
@ -5085,10 +5085,10 @@ static void gen_farith (DisasContext *ctx, uint32_t op1, int ft,
break;
case FOP(26, 22):
gen_op_cp1_64bitmode();
GEN_LOAD_FREG_FTN(WT0, fs);
GEN_LOAD_FREG_FTN(WTH0, fs);
GEN_LOAD_FREG_FTN(WT1, ft);
GEN_LOAD_FREG_FTN(WTH1, ft);
GEN_LOAD_FREG_FTN(WT0, ft);
GEN_LOAD_FREG_FTN(WTH0, ft);
GEN_LOAD_FREG_FTN(WT1, fs);
GEN_LOAD_FREG_FTN(WTH1, fs);
gen_op_float_mulr_ps();
GEN_STORE_FTN_FREG(fd, WT2);
GEN_STORE_FTN_FREG(fd, WTH2);