diff options
| author | Laurent Vivier <laurent@vivier.eu> | 2017-06-28 22:42:39 +0200 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2017-06-29 20:28:22 +0200 |
| commit | 2f77995cebc8027851b8ea8f02c097fb8cdf668a (patch) | |
| tree | fd5d9f7f0461e8b223231ddbc3c5c1c6d440a378 /target/m68k/fpu_helper.c | |
| parent | 0f72129281765ed64d26353284059f2bdcde7a23 (diff) | |
target/m68k: add fsglmul and fsgldiv
fsglmul and fsgldiv truncate data to single precision before computing
results.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170628204241.32106-6-laurent@vivier.eu>
Diffstat (limited to 'target/m68k/fpu_helper.c')
| -rw-r--r-- | target/m68k/fpu_helper.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 3b535542c2..600ae8a4dc 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -253,6 +253,20 @@ void HELPER(fdmul)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1) PREC_END(); } +void HELPER(fsglmul)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1) +{ + int rounding_mode = get_float_rounding_mode(&env->fp_status); + floatx80 a, b; + + PREC_BEGIN(32); + set_float_rounding_mode(float_round_to_zero, &env->fp_status); + a = floatx80_round(val0->d, &env->fp_status); + b = floatx80_round(val1->d, &env->fp_status); + set_float_rounding_mode(rounding_mode, &env->fp_status); + res->d = floatx80_mul(a, b, &env->fp_status); + PREC_END(); +} + void HELPER(fdiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1) { res->d = floatx80_div(val1->d, val0->d, &env->fp_status); @@ -272,6 +286,20 @@ void HELPER(fddiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1) PREC_END(); } +void HELPER(fsgldiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1) +{ + int rounding_mode = get_float_rounding_mode(&env->fp_status); + floatx80 a, b; + + PREC_BEGIN(32); + set_float_rounding_mode(float_round_to_zero, &env->fp_status); + a = floatx80_round(val1->d, &env->fp_status); + b = floatx80_round(val0->d, &env->fp_status); + set_float_rounding_mode(rounding_mode, &env->fp_status); + res->d = floatx80_div(a, b, &env->fp_status); + PREC_END(); +} + static int float_comp_to_cc(int float_compare) { switch (float_compare) { |