Patchwork [v2,07/10] target-ppc: emulate lfiwax instruction

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Submitter Aurelien Jarno
Date April 20, 2013, 6:56 p.m.
Message ID <1366484182-29187-8-git-send-email-aurelien@aurel32.net>
Download mbox | patch
Permalink /patch/238177/
State New
Headers show

Comments

Aurelien Jarno - April 20, 2013, 6:56 p.m.
Needed for Power ISA version 2.05 compliance.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---
 target-ppc/translate.c |   18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

Patch

diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 4b1896f..8298e1f 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -2526,7 +2526,6 @@  static inline void gen_qemu_ld32u(DisasContext *ctx, TCGv arg1, TCGv arg2)
     }
 }
 
-#if defined(TARGET_PPC64)
 static inline void gen_qemu_ld32s(DisasContext *ctx, TCGv arg1, TCGv arg2)
 {
     if (unlikely(ctx->le_mode)) {
@@ -2536,7 +2535,6 @@  static inline void gen_qemu_ld32s(DisasContext *ctx, TCGv arg1, TCGv arg2)
     } else
         tcg_gen_qemu_ld32s(arg1, arg2, ctx->mem_idx);
 }
-#endif
 
 static inline void gen_qemu_ld64(DisasContext *ctx, TCGv_i64 arg1, TCGv arg2)
 {
@@ -3295,6 +3293,21 @@  GEN_LDFS(lfd, ld64, 0x12, PPC_FLOAT);
  /* lfs lfsu lfsux lfsx */
 GEN_LDFS(lfs, ld32fs, 0x10, PPC_FLOAT);
 
+/* lfiwax */
+static void gen_lfiwax(DisasContext *ctx)
+{
+    TCGv EA;
+    if (unlikely(!ctx->fpu_enabled)) {
+        gen_exception(ctx, POWERPC_EXCP_FPU);
+        return;
+    }
+    gen_set_access_type(ctx, ACCESS_FLOAT);
+    EA = tcg_temp_new();
+    gen_addr_reg_index(ctx, EA);
+    gen_qemu_ld32s(ctx, cpu_fpr[rD(ctx->opcode)], EA);
+    tcg_temp_free(EA);
+}
+
 /***                         Floating-point store                          ***/
 #define GEN_STF(name, stop, opc, type)                                        \
 static void glue(gen_, name)(DisasContext *ctx)                                       \
@@ -9009,6 +9022,7 @@  GEN_LDXF(name, ldop, 0x17, op | 0x00, type)
 
 GEN_LDFS(lfd, ld64, 0x12, PPC_FLOAT)
 GEN_LDFS(lfs, ld32fs, 0x10, PPC_FLOAT)
+GEN_HANDLER_E(lfiwax, 0x1f, 0x17, 0x1a, 0x00000001, PPC_NONE, PPC2_ISA205),
 
 #undef GEN_STF
 #undef GEN_STUF