diff options
| author | Bastian Koppelmann <kbastian@mail.uni-paderborn.de> | 2015-01-21 15:55:15 +0000 |
|---|---|---|
| committer | Bastian Koppelmann <kbastian@mail.uni-paderborn.de> | 2015-01-26 19:56:45 +0000 |
| commit | 811ea608e9721dc4f6933da440f235e7d3a39c0f (patch) | |
| tree | 561c36d60fcef2665ce9fe806526f5eb1c914e75 /target-tricore/op_helper.c | |
| parent | 5f30046f156c181fb4088da2f4b8ea25a7d07c7a (diff) | |
| download | qemu-811ea608e9721dc4f6933da440f235e7d3a39c0f.tar.gz | |
target-tricore: calculate av bits before saturation
64 bit mac instructions calculated the av bits after the saturation, which
resulted in a wrong PSW. This moves the av bit calculation before the
saturation.
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Diffstat (limited to 'target-tricore/op_helper.c')
| -rw-r--r-- | target-tricore/op_helper.c | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/target-tricore/op_helper.c b/target-tricore/op_helper.c index ec2a0cc343..dcc65b1385 100644 --- a/target-tricore/op_helper.c +++ b/target-tricore/op_helper.c @@ -371,6 +371,10 @@ uint64_t helper_madd64_ssov(CPUTriCoreState *env, target_ulong r1, ret = mul + r2; ovf = (ret ^ mul) & ~(mul ^ r2); + t1 = ret >> 32; + env->PSW_USB_AV = t1 ^ t1 * 2u; + env->PSW_USB_SAV |= env->PSW_USB_AV; + if ((int64_t)ovf < 0) { env->PSW_USB_V = (1 << 31); env->PSW_USB_SV = (1 << 31); @@ -384,9 +388,6 @@ uint64_t helper_madd64_ssov(CPUTriCoreState *env, target_ulong r1, } else { env->PSW_USB_V = 0; } - t1 = ret >> 32; - env->PSW_USB_AV = t1 ^ t1 * 2u; - env->PSW_USB_SAV |= env->PSW_USB_AV; return ret; } @@ -401,6 +402,10 @@ uint64_t helper_madd64_suov(CPUTriCoreState *env, target_ulong r1, mul = t1 * t3; ret = mul + r2; + t1 = ret >> 32; + env->PSW_USB_AV = t1 ^ t1 * 2u; + env->PSW_USB_SAV |= env->PSW_USB_AV; + if (ret < r2) { env->PSW_USB_V = (1 << 31); env->PSW_USB_SV = (1 << 31); @@ -409,9 +414,6 @@ uint64_t helper_madd64_suov(CPUTriCoreState *env, target_ulong r1, } else { env->PSW_USB_V = 0; } - t1 = ret >> 32; - env->PSW_USB_AV = t1 ^ t1 * 2u; - env->PSW_USB_SAV |= env->PSW_USB_AV; return ret; } @@ -451,6 +453,10 @@ uint64_t helper_msub64_ssov(CPUTriCoreState *env, target_ulong r1, ret = r2 - mul; ovf = (ret ^ r2) & (mul ^ r2); + t1 = ret >> 32; + env->PSW_USB_AV = t1 ^ t1 * 2u; + env->PSW_USB_SAV |= env->PSW_USB_AV; + if ((int64_t)ovf < 0) { env->PSW_USB_V = (1 << 31); env->PSW_USB_SV = (1 << 31); @@ -464,9 +470,6 @@ uint64_t helper_msub64_ssov(CPUTriCoreState *env, target_ulong r1, } else { env->PSW_USB_V = 0; } - t1 = ret >> 32; - env->PSW_USB_AV = t1 ^ t1 * 2u; - env->PSW_USB_SAV |= env->PSW_USB_AV; return ret; } @@ -480,6 +483,10 @@ uint64_t helper_msub64_suov(CPUTriCoreState *env, target_ulong r1, mul = t1 * t3; ret = r2 - mul; + t1 = ret >> 32; + env->PSW_USB_AV = t1 ^ t1 * 2u; + env->PSW_USB_SAV |= env->PSW_USB_AV; + if (ret > r2) { env->PSW_USB_V = (1 << 31); env->PSW_USB_SV = (1 << 31); @@ -488,9 +495,6 @@ uint64_t helper_msub64_suov(CPUTriCoreState *env, target_ulong r1, } else { env->PSW_USB_V = 0; } - t1 = ret >> 32; - env->PSW_USB_AV = t1 ^ t1 * 2u; - env->PSW_USB_SAV |= env->PSW_USB_AV; return ret; } |