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| 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 | |
| parent | 0f72129281765ed64d26353284059f2bdcde7a23 (diff) | |
| download | qemu-2f77995cebc8027851b8ea8f02c097fb8cdf668a.zip qemu-2f77995cebc8027851b8ea8f02c097fb8cdf668a.tar.gz qemu-2f77995cebc8027851b8ea8f02c097fb8cdf668a.tar.bz2 | |
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')
| -rw-r--r-- | target/m68k/fpu_helper.c | 28 | ||||
| -rw-r--r-- | target/m68k/helper.h | 2 | ||||
| -rw-r--r-- | target/m68k/translate.c | 6 |
3 files changed, 36 insertions, 0 deletions
diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 3b53554..600ae8a 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) { diff --git a/target/m68k/helper.h b/target/m68k/helper.h index 0c7f06f..f05191b 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -39,9 +39,11 @@ DEF_HELPER_4(fdsub, void, env, fp, fp, fp) DEF_HELPER_4(fmul, void, env, fp, fp, fp) DEF_HELPER_4(fsmul, void, env, fp, fp, fp) DEF_HELPER_4(fdmul, void, env, fp, fp, fp) +DEF_HELPER_4(fsglmul, void, env, fp, fp, fp) DEF_HELPER_4(fdiv, void, env, fp, fp, fp) DEF_HELPER_4(fsdiv, void, env, fp, fp, fp) DEF_HELPER_4(fddiv, void, env, fp, fp, fp) +DEF_HELPER_4(fsgldiv, void, env, fp, fp, fp) DEF_HELPER_FLAGS_3(fcmp, TCG_CALL_NO_RWG, void, env, fp, fp) DEF_HELPER_FLAGS_2(set_fpcr, TCG_CALL_NO_RWG, void, env, i32) DEF_HELPER_FLAGS_2(ftst, TCG_CALL_NO_RWG, void, env, fp) diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 618abf6..72c45de 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -4646,6 +4646,12 @@ DISAS_INSN(fpu) case 0x67: /* fdmul */ gen_helper_fdmul(cpu_env, cpu_dest, cpu_src, cpu_dest); break; + case 0x24: /* fsgldiv */ + gen_helper_fsgldiv(cpu_env, cpu_dest, cpu_src, cpu_dest); + break; + case 0x27: /* fsglmul */ + gen_helper_fsglmul(cpu_env, cpu_dest, cpu_src, cpu_dest); + break; case 0x28: /* fsub */ gen_helper_fsub(cpu_env, cpu_dest, cpu_src, cpu_dest); break; |