Patchwork [6/7] target-mips: Add accessors for the two 32-bit halves of a 64-bit FPR

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Submitter Richard Henderson
Date Sept. 17, 2012, 9:35 p.m.
Message ID <1347917713-23343-7-git-send-email-rth@twiddle.net>
Download mbox | patch
Permalink /patch/184564/
State New
Headers show

Comments

Richard Henderson - Sept. 17, 2012, 9:35 p.m.
Not much used yet, but more users to come.

Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 target-mips/translate.c | 64 +++++++++++++++++++++++++++++--------------------
 1 file changed, 38 insertions(+), 26 deletions(-)

Patch

diff --git a/target-mips/translate.c b/target-mips/translate.c
index df92cec..57454f0 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -754,6 +754,24 @@  static void gen_store_fpr64(DisasContext *ctx, TCGv_i64 t, int reg)
     }
 }
 
+static void gen_load_fpr_pair(DisasContext *ctx, TCGv_i32 tl,
+                              TCGv_i32 th, int reg)
+{
+    gen_load_fpr32(ctx, tl, reg);
+    gen_load_fpr32h(ctx, th, reg);
+}
+
+static void gen_store_fpr_pair(DisasContext *ctx, TCGv_i32 tl,
+                               TCGv_i32 th, int reg)
+{
+    if (ctx->hflags & MIPS_HFLAG_F64) {
+        tcg_gen_concat_i32_i64(fpu_f64[reg], tl, th);
+    } else {
+        tcg_gen_mov_i32(fpu_f32[reg], tl);
+        tcg_gen_mov_i32(fpu_fh32[reg], th);
+    }
+}
+
 static inline int get_fp_bit (int cc)
 {
     if (cc)
@@ -7671,8 +7689,7 @@  static void gen_farith (DisasContext *ctx, enum fopcode op1,
 
             gen_load_fpr32(ctx, fp0, fs);
             gen_load_fpr32(ctx, fp1, ft);
-            gen_store_fpr32h(ctx, fp0, fd);
-            gen_store_fpr32(ctx, fp1, fd);
+            gen_store_fpr_pair(ctx, fp1, fp0, fd);
             tcg_temp_free_i32(fp0);
             tcg_temp_free_i32(fp1);
         }
@@ -7686,8 +7703,7 @@  static void gen_farith (DisasContext *ctx, enum fopcode op1,
 
             gen_load_fpr32(ctx, fp0, fs);
             gen_load_fpr32h(ctx, fp1, ft);
-            gen_store_fpr32(ctx, fp1, fd);
-            gen_store_fpr32h(ctx, fp0, fd);
+            gen_store_fpr_pair(ctx, fp1, fp0, fd);
             tcg_temp_free_i32(fp0);
             tcg_temp_free_i32(fp1);
         }
@@ -7701,8 +7717,7 @@  static void gen_farith (DisasContext *ctx, enum fopcode op1,
 
             gen_load_fpr32h(ctx, fp0, fs);
             gen_load_fpr32(ctx, fp1, ft);
-            gen_store_fpr32(ctx, fp1, fd);
-            gen_store_fpr32h(ctx, fp0, fd);
+            gen_store_fpr_pair(ctx, fp1, fp0, fd);
             tcg_temp_free_i32(fp0);
             tcg_temp_free_i32(fp1);
         }
@@ -7716,8 +7731,7 @@  static void gen_farith (DisasContext *ctx, enum fopcode op1,
 
             gen_load_fpr32h(ctx, fp0, fs);
             gen_load_fpr32h(ctx, fp1, ft);
-            gen_store_fpr32(ctx, fp1, fd);
-            gen_store_fpr32h(ctx, fp0, fd);
+            gen_store_fpr_pair(ctx, fp1, fp0, fd);
             tcg_temp_free_i32(fp0);
             tcg_temp_free_i32(fp1);
         }
@@ -7877,8 +7891,7 @@  static void gen_flt3_arith (DisasContext *ctx, uint32_t opc,
         check_cp1_64bitmode(ctx);
         {
             TCGv t0 = tcg_temp_local_new();
-            TCGv_i32 fp = tcg_temp_new_i32();
-            TCGv_i32 fph = tcg_temp_new_i32();
+            TCGv_i32 fp, fph;
             int l1 = gen_new_label();
             int l2 = gen_new_label();
 
@@ -7886,28 +7899,27 @@  static void gen_flt3_arith (DisasContext *ctx, uint32_t opc,
             tcg_gen_andi_tl(t0, t0, 0x7);
 
             tcg_gen_brcondi_tl(TCG_COND_NE, t0, 0, l1);
-            gen_load_fpr32(ctx, fp, fs);
-            gen_load_fpr32h(ctx, fph, fs);
-            gen_store_fpr32(ctx, fp, fd);
-            gen_store_fpr32h(ctx, fph, fd);
+
+            fp = tcg_temp_new_i32();
+            fph = tcg_temp_new_i32();
+            gen_load_fpr_pair(ctx, fp, fph, fs);
+            gen_store_fpr_pair(ctx, fp, fph, fd);
+            tcg_temp_free_i32(fp);
+            tcg_temp_free_i32(fph);
             tcg_gen_br(l2);
+
             gen_set_label(l1);
             tcg_gen_brcondi_tl(TCG_COND_NE, t0, 4, l2);
             tcg_temp_free(t0);
-#ifdef TARGET_WORDS_BIGENDIAN
-            gen_load_fpr32(ctx, fp, fs);
-            gen_load_fpr32h(ctx, fph, ft);
-            gen_store_fpr32h(ctx, fp, fd);
-            gen_store_fpr32(ctx, fph, fd);
-#else
-            gen_load_fpr32h(ctx, fph, fs);
-            gen_load_fpr32(ctx, fp, ft);
-            gen_store_fpr32(ctx, fph, fd);
-            gen_store_fpr32h(ctx, fp, fd);
-#endif
-            gen_set_label(l2);
+
+            fp = tcg_temp_new_i32();
+            fph = tcg_temp_new_i32();
+            gen_load_fpr_pair(ctx, fp, fph, fs);
+            gen_store_fpr_pair(ctx, fph, fp, fd);
             tcg_temp_free_i32(fp);
             tcg_temp_free_i32(fph);
+
+            gen_set_label(l2);
         }
         opn = "alnv.ps";
         break;