[Qemu-devel] [V4 PATCH 22/22] target-ppc: Add ISA2.06 lfiwzx Instruction

[Tom Musta <tommusta@gmail.com>]

This patch adds the Load Floating Point as Integer Word and
Zero Indexed (lfiwzx) instruction which was introduced in
Power ISA 2.06.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Reviewed-by: Richard Henderson <address@hidden>
---
V4: Using the PPC2_FP_CVT_ISA206 flag.

 target-ppc/translate.c |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 5b2143a..796a103 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -3482,6 +3482,20 @@ static void gen_lfiwax(DisasContext *ctx)
     tcg_temp_free(t0);
 }
 
+/* lfiwzx */
+static void gen_lfiwzx(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_ld32u_i64(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)                                       \
@@ -9887,6 +9901,7 @@ 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),
+GEN_HANDLER_E(lfiwzx, 0x1f, 0x17, 0x1b, 0x1, PPC_NONE, PPC2_FP_CVT_ISA206),
 GEN_HANDLER_E(lfdp, 0x39, 0xFF, 0xFF, 0x00200003, PPC_NONE, PPC2_ISA205),
 GEN_HANDLER_E(lfdpx, 0x1F, 0x17, 0x18, 0x00200001, PPC_NONE, PPC2_ISA205),
 
-- 
1.7.1