fsglmul and fsgldiv truncate data to single precision before computing
results.
Signed-off-by: Laurent Vivier
---
target/m68k/fpu_helper.c | 28
target/m68k/helper.h | 2 ++
target/m68k/translate.c | 6 ++
3 files changed, 36 insertions(+)
diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c
index f6b6788..0daad4a 100644
--- a/target/m68k/fpu_helper.c
+++ b/target/m68k/fpu_helper.c
@@ -249,6 +249,20 @@ 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(>fp_status);
+floatx80 a, b;
+
+PREC_BEGIN(32);
+set_float_rounding_mode(float_round_to_zero, >fp_status);
+a = floatx80_round(val0->d, >fp_status);
+b = floatx80_round(val1->d, >fp_status);
+set_float_rounding_mode(rounding_mode, >fp_status);
+res->d = floatx80_mul(a, b, >fp_status);
+PREC_END();
+}
+
void HELPER(fdiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
{
res->d = floatx80_div(val1->d, val0->d, >fp_status);
@@ -268,6 +282,20 @@ 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(>fp_status);
+floatx80 a, b;
+
+PREC_BEGIN(32);
+set_float_rounding_mode(float_round_to_zero, >fp_status);
+a = floatx80_round(val1->d, >fp_status);
+b = floatx80_round(val0->d, >fp_status);
+set_float_rounding_mode(rounding_mode, >fp_status);
+res->d = floatx80_div(a, b, >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 84f78f9..4775770 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;
--
2.9.4