fsglmul and fsgldiv truncate data to single precision before computing
results.
Signed-off-by: Laurent Vivier <laur...@vivier.eu>
---
target/m68k/fpu_helper.c | 22 ++++++++++++++++++++++
target/m68k/helper.h | 2 ++
target/m68k/translate.c | 6 ++++++
3 files changed, 30 insertions(+)
diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c
index 912c0b7..0d83925 100644
--- a/target/m68k/fpu_helper.c
+++ b/target/m68k/fpu_helper.c
@@ -183,11 +183,33 @@ void HELPER(fmul)(CPUM68KState *env, FPReg *res, FPReg
*val0, FPReg *val1)
res->d = floatx80_mul(val0->d, val1->d, &env->fp_status);
}
+void HELPER(fsglmul)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
+{
+ float32 a, b, c;
+
+ a = floatx80_to_float32(val0->d, &env->fp_status);
+ b = floatx80_to_float32(val1->d, &env->fp_status);
+ c = float32_mul(a, b, &env->fp_status);
+
+ res->d = float32_to_floatx80(c, &env->fp_status);
+}
+
void HELPER(fdiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
{
res->d = floatx80_div(val1->d, val0->d, &env->fp_status);
}
+void HELPER(fsgldiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
+{
+ float32 a, b, c;
+
+ a = floatx80_to_float32(val1->d, &env->fp_status);
+ b = floatx80_to_float32(val0->d, &env->fp_status);
+ c = float32_div(a, b, &env->fp_status);
+
+ res->d = float32_to_floatx80(c, &env->fp_status);
+}
+
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 d6e80e4..5a006de 100644
--- a/target/m68k/helper.h
+++ b/target/m68k/helper.h
@@ -31,7 +31,9 @@ DEF_HELPER_3(fchs, void, env, fp, fp)
DEF_HELPER_4(fadd, void, env, fp, fp, fp)
DEF_HELPER_4(fsub, void, env, fp, fp, fp)
DEF_HELPER_4(fmul, 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(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 a54da87..a50bf5f 100644
--- a/target/m68k/translate.c
+++ b/target/m68k/translate.c
@@ -4622,6 +4622,12 @@ DISAS_INSN(fpu)
case 0x23: case 0x63: case 0x67: /* fmul */
gen_helper_fmul(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: case 0x68: case 0x6c: /* fsub */
gen_helper_fsub(cpu_env, cpu_dest, cpu_src, cpu_dest);
break;
--
2.9.4
