diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/dynarec/rv64/dynarec_rv64_emit_math.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/dynarec/rv64/dynarec_rv64_emit_math.c b/src/dynarec/rv64/dynarec_rv64_emit_math.c index d05ccc24..3564d684 100644 --- a/src/dynarec/rv64/dynarec_rv64_emit_math.c +++ b/src/dynarec/rv64/dynarec_rv64_emit_math.c @@ -390,11 +390,12 @@ void emit_sub8(dynarec_rv64_t* dyn, int ninst, int s1, int s2, int s3, int s4, i } SUB(s1, s1, s2); + ANDI(s1, s1, 0xff); IFX(X_SF) { - BGE(s1, xZR, 8); + SRLI(s3, s1, 7); + BEQZ(s3, 8); ORI(xFlags, xFlags, 1 << F_SF); } - ANDI(s1, s1, 0xff); IFX(X_PEND) { SB(s1, xEmu, offsetof(x64emu_t, res)); } @@ -436,11 +437,11 @@ void emit_sub16(dynarec_rv64_t* dyn, int ninst, int s1, int s2, int s3, int s4, IFX(X_PEND) { SH(s1, xEmu, offsetof(x64emu_t, res)); } + SLLI(s1, s1, 48); IFX(X_SF) { BGE(s1, xZR, 8); ORI(xFlags, xFlags, 1 << F_SF); } - SLLI(s1, s1, 48); SRLI(s1, s1, 48); CALC_SUB_FLAGS(s5, s2, s1, s3, s4, 16); |