From 200ae688b21e84f13dcfb4349cf8aaa63dcbe692 Mon Sep 17 00:00:00 2001
From: ths <ths@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Thu, 12 Jun 2008 03:17:06 +0000
Subject: [PATCH] TCGify the simplest FP instructions.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4737 c046a42c-6fe2-441c-8c8c-71466251a162
---
 target-mips/op.c        | 27 ---------------------------
 target-mips/op_mem.c    | 11 -----------
 target-mips/translate.c | 28 ++++++++++++++--------------
 3 files changed, 14 insertions(+), 52 deletions(-)

diff --git a/target-mips/op.c b/target-mips/op.c
index 43d8198184..7d7c4732d7 100644
--- a/target-mips/op.c
+++ b/target-mips/op.c
@@ -377,14 +377,6 @@ void op_dmultu (void)
 
 #define FLOAT_OP(name, p) void OPPROTO op_float_##name##_##p(void)
 
-FLOAT_OP(cvtps, s)
-{
-    WT2 = WT0;
-    WTH2 = WT1;
-    DEBUG_FPU_STATE();
-    FORCE_RET();
-}
-
 FLOAT_OP(pll, ps)
 {
     DT2 = ((uint64_t)WT0 << 32) | WT1;
@@ -609,25 +601,6 @@ FLOAT_UNOP(abs)
 FLOAT_UNOP(chs)
 #undef FLOAT_UNOP
 
-FLOAT_OP(mov, d)
-{
-    FDT2 = FDT0;
-    DEBUG_FPU_STATE();
-    FORCE_RET();
-}
-FLOAT_OP(mov, s)
-{
-    FST2 = FST0;
-    DEBUG_FPU_STATE();
-    FORCE_RET();
-}
-FLOAT_OP(mov, ps)
-{
-    FST2 = FST0;
-    FSTH2 = FSTH0;
-    DEBUG_FPU_STATE();
-    FORCE_RET();
-}
 FLOAT_OP(alnv, ps)
 {
     switch (T0 & 0x7) {
diff --git a/target-mips/op_mem.c b/target-mips/op_mem.c
index cb60d06be6..31f58a8144 100644
--- a/target-mips/op_mem.c
+++ b/target-mips/op_mem.c
@@ -267,14 +267,3 @@ void glue(op_sdr, MEMSUFFIX) (void)
     FORCE_RET();
 }
 #endif /* TARGET_MIPS64 */
-
-void glue(op_luxc1, MEMSUFFIX) (void)
-{
-    DT0 = glue(ldq, MEMSUFFIX)(T0 & ~0x7);
-    FORCE_RET();
-}
-void glue(op_suxc1, MEMSUFFIX) (void)
-{
-    glue(stq, MEMSUFFIX)(T0 & ~0x7, DT0);
-    FORCE_RET();
-}
diff --git a/target-mips/translate.c b/target-mips/translate.c
index 27d774f74f..aae8023636 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -960,8 +960,6 @@ OP_LD_TABLE(wl);
 OP_LD_TABLE(wr);
 OP_ST_TABLE(wl);
 OP_ST_TABLE(wr);
-OP_LD_TABLE(uxc1);
-OP_ST_TABLE(uxc1);
 
 #define OP_LD(insn,fname)                                        \
 void inline op_ldst_##insn(DisasContext *ctx)                    \
@@ -5651,8 +5649,7 @@ static void gen_farith (DisasContext *ctx, uint32_t op1,
         break;
     case FOP(6, 16):
         gen_load_fpr32(fpu32_T[0], fs);
-        gen_op_float_mov_s();
-        gen_store_fpr32(fpu32_T[2], fd);
+        gen_store_fpr32(fpu32_T[0], fd);
         opn = "mov.s";
         break;
     case FOP(7, 16):
@@ -5803,9 +5800,12 @@ static void gen_farith (DisasContext *ctx, uint32_t op1,
         break;
     case FOP(38, 16):
         check_cp1_64bitmode(ctx);
-        gen_load_fpr32(fpu32_T[1], fs);
-        gen_load_fpr32(fpu32_T[0], ft);
-        gen_op_float_cvtps_s();
+        gen_load_fpr32(fpu32_T[0], fs);
+        gen_load_fpr32(fpu32_T[1], ft);
+        tcg_gen_extu_i32_i64(fpu64_T[0], fpu32_T[0]);
+        tcg_gen_extu_i32_i64(fpu64_T[1], fpu32_T[1]);
+        tcg_gen_shli_i64(fpu64_T[1], fpu64_T[1], 32);
+        tcg_gen_or_i64(fpu64_T[2], fpu64_T[0], fpu64_T[1]);
         gen_store_fpr64(ctx, fpu64_T[2], fd);
         opn = "cvt.ps.s";
         break;
@@ -5889,8 +5889,7 @@ static void gen_farith (DisasContext *ctx, uint32_t op1,
     case FOP(6, 17):
         check_cp1_registers(ctx, fs | fd);
         gen_load_fpr64(ctx, fpu64_T[0], fs);
-        gen_op_float_mov_d();
-        gen_store_fpr64(ctx, fpu64_T[2], fd);
+        gen_store_fpr64(ctx, fpu64_T[0], fd);
         opn = "mov.d";
         break;
     case FOP(7, 17):
@@ -6156,9 +6155,8 @@ static void gen_farith (DisasContext *ctx, uint32_t op1,
         check_cp1_64bitmode(ctx);
         gen_load_fpr32(fpu32_T[0], fs);
         gen_load_fpr32h(fpu32h_T[0], fs);
-        gen_op_float_mov_ps();
-        gen_store_fpr32(fpu32_T[2], fd);
-        gen_store_fpr32h(fpu32h_T[2], fd);
+        gen_store_fpr32(fpu32_T[0], fd);
+        gen_store_fpr32h(fpu32h_T[0], fd);
         opn = "mov.ps";
         break;
     case FOP(7, 22):
@@ -6407,7 +6405,8 @@ static void gen_flt3_ldst (DisasContext *ctx, uint32_t opc,
         break;
     case OPC_LUXC1:
         check_cp1_64bitmode(ctx);
-        op_ldst(luxc1);
+        tcg_gen_andi_tl(cpu_T[0], cpu_T[0], ~0x7);
+        tcg_gen_qemu_ld64(fpu64_T[0], cpu_T[0], ctx->mem_idx);
         gen_store_fpr64(ctx, fpu64_T[0], fd);
         opn = "luxc1";
         break;
@@ -6429,7 +6428,8 @@ static void gen_flt3_ldst (DisasContext *ctx, uint32_t opc,
     case OPC_SUXC1:
         check_cp1_64bitmode(ctx);
         gen_load_fpr64(ctx, fpu64_T[0], fs);
-        op_ldst(suxc1);
+        tcg_gen_andi_tl(cpu_T[0], cpu_T[0], ~0x7);
+        tcg_gen_qemu_st64(fpu64_T[0], cpu_T[0], ctx->mem_idx);
         opn = "suxc1";
         store = 1;
         break;
-- 
2.11.0