[Qemu-devel] [PATCH 107/111] m68k: add flognp1 instruction

[Bryce Lanham]

From: Laurent Vivier <address@hidden>

Signed-off-by: Laurent Vivier <address@hidden>
---
 target-m68k/helper.c    |   13 +++++++++++++
 target-m68k/helpers.h   |    1 +
 target-m68k/translate.c |    3 +++
 3 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/target-m68k/helper.c b/target-m68k/helper.c
index 9269b48..f9a35d5 100644
--- a/target-m68k/helper.c
+++ b/target-m68k/helper.c
@@ -1374,6 +1374,19 @@ void HELPER(sqrt_FP0)(CPUState *env)
     floatx80_to_FP0(env, res);
 }
 
+void HELPER(lognp1_FP0)(CPUState *env)
+{
+    floatx80 val;
+    long double res;
+
+    val = FP0_to_floatx80(env);
+    DBG_FPUH("lognp1_FP0 %Lg", floatx80_to_ldouble(val));
+    res = logl(floatx80_to_ldouble(val) + 1.0);
+    DBG_FPU(" = %Lg\n", res);
+
+    floatx80_to_FP0(env, ldouble_to_floatx80(res));
+}
+
 void HELPER(ln_FP0)(CPUState *env)
 {
     floatx80 val;
diff --git a/target-m68k/helpers.h b/target-m68k/helpers.h
index 3c8fc60..c043c54 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(sinh_FP0, void, env)
 DEF_HELPER_1(itrunc_FP0, void, env)
 DEF_HELPER_1(sqrt_FP0, void, env)
+DEF_HELPER_1(lognp1_FP0, void, env)
 DEF_HELPER_1(atan_FP0, void, env)
 DEF_HELPER_1(asin_FP0, void, env)
 DEF_HELPER_1(sin_FP0, void, env)
diff --git a/target-m68k/translate.c b/target-m68k/translate.c
index 26ab027..f4f10f4 100644
--- a/target-m68k/translate.c
+++ b/target-m68k/translate.c
@@ -3737,6 +3737,9 @@ DISAS_INSN(fpu)
     case 4: case 0x41: case 0x45: /* fsqrt */
         gen_helper_sqrt_FP0(cpu_env);
         break;
+    case 6:                          /* flognp1 */
+        gen_helper_lognp1_FP0(cpu_env);
+        break;
     case 0x09:                       /* ftanh */
         gen_helper_tanh_FP0(cpu_env);
         break;
-- 
1.7.2.3