[Qemu-devel] [PATCH 074/111] m68k: add ftwotox instruction

[Bryce Lanham]

From: Laurent Vivier <address@hidden>

Used by "gconf-schemas --register metacity.schemas" via libm

Signed-off-by: Laurent Vivier <address@hidden>
---
 target-m68k/helper.c    |   12 ++++++++++++
 target-m68k/helpers.h   |    1 +
 target-m68k/translate.c |    3 +++
 3 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/target-m68k/helper.c b/target-m68k/helper.c
index f6e446a..3f6a0a0 100644
--- a/target-m68k/helper.c
+++ b/target-m68k/helper.c
@@ -1321,6 +1321,18 @@ void HELPER(exp_FP0)(CPUState *env)
     floatx80_to_FP0(env, float32_to_floatx80(res, &env->fp_status));
 }
 
+void HELPER(exp2_FP0)(CPUState *env)
+{
+    float32 res;
+
+    DBG_FPU("exp_FP0\n");
+
+    res = float32_exp2(floatx80_to_float32(FP0_to_floatx80(env),
+                                           &env->fp_status), &env->fp_status);
+
+    floatx80_to_FP0(env, float32_to_floatx80(res, &env->fp_status));
+}
+
 void HELPER(abs_FP0)(CPUState *env)
 {
     floatx80 res;
diff --git a/target-m68k/helpers.h b/target-m68k/helpers.h
index 138b4a4..184ceef 100644
--- a/target-m68k/helpers.h
+++ b/target-m68k/helpers.h
@@ -66,6 +66,7 @@ DEF_HELPER_1(iround_FP0, void, env)
 DEF_HELPER_1(itrunc_FP0, void, env)
 DEF_HELPER_1(sqrt_FP0, void, env)
 DEF_HELPER_1(exp_FP0, void, env)
+DEF_HELPER_1(exp2_FP0, void, env)
 DEF_HELPER_1(ln_FP0, void, env)
 DEF_HELPER_1(log10_FP0, void, env)
 DEF_HELPER_1(abs_FP0, void, env)
diff --git a/target-m68k/translate.c b/target-m68k/translate.c
index 252e610..61ec317 100644
--- a/target-m68k/translate.c
+++ b/target-m68k/translate.c
@@ -3663,6 +3663,9 @@ DISAS_INSN(fpu)
     case 0x10:                       /* fetox */
         gen_helper_exp_FP0(cpu_env);
         break;
+    case 0x11:                       /* ftwotox */
+        gen_helper_exp2_FP0(cpu_env);
+        break;
     case 0x14:                       /* flogn */
         gen_helper_ln_FP0(cpu_env);
         break;
-- 
1.7.2.3