[Qemu-devel] [PATCH] MIPS: add support for cvt.s.d and cvt.d.s

[Aurelien Jarno <aurelien@aurel32.net>]

Hi,

The patch below implements the cvt.s.d and cvt.d.s instructions for the
mips target. They are need to be able to execute the cp and the find
programs.

Bye,
Aurelien


Index: target-mips/op.c
===================================================================
RCS file: /sources/qemu/qemu/target-mips/op.c,v
retrieving revision 1.9
diff -u -r1.9 op.c
--- target-mips/op.c	26 Jun 2006 20:29:47 -0000	1.9
+++ target-mips/op.c	28 Sep 2006 23:42:30 -0000
@@ -785,12 +785,24 @@
 
 #define FLOAT_OP(name, p) void OPPROTO op_float_##name##_##p(void)
 
+FLOAT_OP(cvtd, s)
+{
+    FDT2 = float32_to_float64(WT0, &env->fp_status);
+    DEBUG_FPU_STATE();
+    RETURN();
+}
 FLOAT_OP(cvtd, w)
 {
     FDT2 = int32_to_float64(WT0, &env->fp_status);
     DEBUG_FPU_STATE();
     RETURN();
 }
+FLOAT_OP(cvts, d)
+{
+    FST2 = float64_to_float32(WT0, &env->fp_status);
+    DEBUG_FPU_STATE();
+    RETURN();
+}
 FLOAT_OP(cvts, w)
 {
     FST2 = int32_to_float32(WT0, &env->fp_status);
Index: target-mips/translate.c
===================================================================
RCS file: /sources/qemu/qemu/target-mips/translate.c,v
retrieving revision 1.15
diff -u -r1.15 translate.c
--- target-mips/translate.c	26 Jun 2006 20:02:45 -0000	1.15
+++ target-mips/translate.c	28 Sep 2006 23:42:30 -0000
@@ -1675,6 +1675,13 @@
         GEN_STORE_FTN_FREG(fd, WT2);
         opn = "ceil.w.d";
         break;
+    case FOP(33, 16): /* cvt.d.s */
+        CHECK_FR(ctx, fs | fd);
+        GEN_LOAD_FREG_FTN(WT0, fs);
+        gen_op_float_cvtd_s();
+        GEN_STORE_FTN_FREG(fd, DT2);
+        opn = "cvt.d.s";
+        break;
     case FOP(33, 20): /* cvt.d.w */
         CHECK_FR(ctx, fs | fd);
         GEN_LOAD_FREG_FTN(WT0, fs);
@@ -1782,6 +1789,13 @@
         GEN_STORE_FTN_FREG(fd, WT2);
         opn = "trunc.w.s";
         break;
+    case FOP(32, 17): /* cvt.s.d */
+        CHECK_FR(ctx, fs | fd);
+        GEN_LOAD_FREG_FTN(WT0, fs);
+        gen_op_float_cvts_d();
+        GEN_STORE_FTN_FREG(fd, WT2);
+        opn = "cvt.s.d";
+        break;
     case FOP(32, 20): /* cvt.s.w */
         CHECK_FR(ctx, fs | fd);
         GEN_LOAD_FREG_FTN(WT0, fs);
-- 
  .''`.  Aurelien Jarno	            | GPG: 1024D/F1BCDB73
 : :' :  Debian developer           | Electrical Engineer
 `. `'   aurel32@debian.org         | aurelien@aurel32.net
   `-    people.debian.org/~aurel32 | www.aurel32.net