From: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk>
Rather than perform the VSR register decoding within the helper itself,
introduce a new generator and helper function which perform the decode based
upon xT and xB at translation time.
The xscvqpdp helper is the only 2 parameter xT/xB implementation that requires
the opcode to be passed as an additional parameter, so handling this separately
allows us to optimise the conversion in the next commit.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
Message-Id: <20190616123751.781-7-mark.cave-ayl...@ilande.co.uk>
Signed-off-by: David Gibson <da...@gibson.dropbear.id.au>
---
target/ppc/fpu_helper.c | 5 ++---
target/ppc/helper.h | 2 +-
target/ppc/translate/vsx-impl.inc.c | 18 +++++++++++++++++-
3 files changed, 20 insertions(+), 5 deletions(-)
diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c
index 012dfdac3e..230ee2f072 100644
--- a/target/ppc/fpu_helper.c
+++ b/target/ppc/fpu_helper.c
@@ -2899,10 +2899,9 @@ VSX_CVT_FP_TO_FP_HP(xvcvhpsp, 4, float16, float32,
VsrH(2 * i + 1), VsrW(i), 0)
* xscvqpdp isn't using VSX_CVT_FP_TO_FP() because xscvqpdpo will be
* added to this later.
*/
-void helper_xscvqpdp(CPUPPCState *env, uint32_t opcode)
+void helper_xscvqpdp(CPUPPCState *env, uint32_t opcode,
+ ppc_vsr_t *xt, ppc_vsr_t *xb)
{
- ppc_vsr_t *xt = &env->vsr[xT(opcode)];
- ppc_vsr_t *xb = &env->vsr[xB(opcode)];
ppc_vsr_t t = { };
float_status tstat;
diff --git a/target/ppc/helper.h b/target/ppc/helper.h
index f6a97cedc6..5d15166988 100644
--- a/target/ppc/helper.h
+++ b/target/ppc/helper.h
@@ -405,7 +405,7 @@ DEF_HELPER_2(xscvdphp, void, env, i32)
DEF_HELPER_2(xscvdpqp, void, env, i32)
DEF_HELPER_2(xscvdpsp, void, env, i32)
DEF_HELPER_2(xscvdpspn, i64, env, i64)
-DEF_HELPER_2(xscvqpdp, void, env, i32)
+DEF_HELPER_4(xscvqpdp, void, env, i32, vsr, vsr)
DEF_HELPER_2(xscvqpsdz, void, env, i32)
DEF_HELPER_2(xscvqpswz, void, env, i32)
DEF_HELPER_2(xscvqpudz, void, env, i32)
diff --git a/target/ppc/translate/vsx-impl.inc.c
b/target/ppc/translate/vsx-impl.inc.c
index b24be00ccf..ffbe3b0fac 100644
--- a/target/ppc/translate/vsx-impl.inc.c
+++ b/target/ppc/translate/vsx-impl.inc.c
@@ -999,6 +999,23 @@ VSX_CMP(xvcmpgesp, 0x0C, 0x0A, 0, PPC2_VSX)
VSX_CMP(xvcmpgtsp, 0x0C, 0x09, 0, PPC2_VSX)
VSX_CMP(xvcmpnesp, 0x0C, 0x0B, 0, PPC2_VSX)
+static void gen_xscvqpdp(DisasContext *ctx)
+{
+ TCGv_i32 opc;
+ TCGv_ptr xt, xb;
+ if (unlikely(!ctx->vsx_enabled)) {
+ gen_exception(ctx, POWERPC_EXCP_VSXU);
+ return;
+ }
+ opc = tcg_const_i32(ctx->opcode);
+ xt = gen_vsr_ptr(xT(ctx->opcode));
+ xb = gen_vsr_ptr(xB(ctx->opcode));
+ gen_helper_xscvqpdp(cpu_env, opc, xt, xb);
+ tcg_temp_free_i32(opc);
+ tcg_temp_free_ptr(xt);
+ tcg_temp_free_ptr(xb);
+}
+
#define GEN_VSX_HELPER_2(name, op1, op2, inval, type) \
static void gen_##name(DisasContext *ctx) \
{ \
@@ -1087,7 +1104,6 @@ GEN_VSX_HELPER_2(xscvdphp, 0x16, 0x15, 0x11, PPC2_ISA300)
GEN_VSX_HELPER_2(xscvdpsp, 0x12, 0x10, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xscvdpqp, 0x04, 0x1A, 0x16, PPC2_ISA300)
GEN_VSX_HELPER_XT_XB_ENV(xscvdpspn, 0x16, 0x10, 0, PPC2_VSX207)
-GEN_VSX_HELPER_2(xscvqpdp, 0x04, 0x1A, 0x14, PPC2_ISA300)
GEN_VSX_HELPER_2(xscvqpsdz, 0x04, 0x1A, 0x19, PPC2_ISA300)
GEN_VSX_HELPER_2(xscvqpswz, 0x04, 0x1A, 0x09, PPC2_ISA300)
GEN_VSX_HELPER_2(xscvqpudz, 0x04, 0x1A, 0x11, PPC2_ISA300)
--
2.21.0
