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[Qemu-devel] [PATCH 05/14] Make mtvscr use a helper
From: |
Nathan Froyd |
Subject: |
[Qemu-devel] [PATCH 05/14] Make mtvscr use a helper |
Date: |
Thu, 22 Jan 2009 12:44:05 -0800 |
Do this so we can set float statuses once per mtvscr, rather than once
per Altivec instruction.
Signed-off-by: Nathan Froyd <address@hidden>
---
target-ppc/helper.h | 1 +
target-ppc/op_helper.c | 10 ++++++++++
target-ppc/translate.c | 9 ++++-----
3 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index 755bfba..8c04ba7 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -220,6 +220,7 @@ DEF_HELPER_4(vmsumuhs, void, avr, avr, avr, avr)
DEF_HELPER_4(vmsumshm, void, avr, avr, avr, avr)
DEF_HELPER_4(vmsumshs, void, avr, avr, avr, avr)
DEF_HELPER_4(vmladduhm, void, avr, avr, avr, avr)
+DEF_HELPER_1(mtvscr, void, avr);
DEF_HELPER_2(lvebx, void, avr, tl)
DEF_HELPER_2(lvehx, void, avr, tl)
DEF_HELPER_2(lvewx, void, avr, tl)
diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c
index 3086bfd..107f977 100644
--- a/target-ppc/op_helper.c
+++ b/target-ppc/op_helper.c
@@ -2067,6 +2067,16 @@ STVE(stvewx, stl, bswap32, u32)
#undef I
#undef LVE
+void helper_mtvscr (ppc_avr_t *r)
+{
+#if defined(WORDS_BIGENDIAN)
+ env->vscr = r->u32[3];
+#else
+ env->vscr = r->u32[0];
+#endif
+ set_flush_to_zero(vscr_nj, &env->vec_status);
+}
+
void helper_vaddcuw (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
{
int i;
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 1bbe7f5..19abec1 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -6268,15 +6268,14 @@ GEN_HANDLER(mfvscr, 0x04, 0x2, 0x18, 0x001ff800,
PPC_ALTIVEC)
GEN_HANDLER(mtvscr, 0x04, 0x2, 0x19, 0x03ff0000, PPC_ALTIVEC)
{
- TCGv_i32 t;
+ TCGv_ptr p;
if (unlikely(!ctx->altivec_enabled)) {
gen_exception(ctx, POWERPC_EXCP_VPU);
return;
}
- t = tcg_temp_new_i32();
- tcg_gen_trunc_i64_i32(t, cpu_avrl[rD(ctx->opcode)]);
- tcg_gen_st_i32(t, cpu_env, offsetof(CPUState, vscr));
- tcg_temp_free_i32(t);
+ p = gen_avr_ptr(rD(ctx->opcode));
+ gen_helper_mtvscr(p);
+ tcg_temp_free_ptr(p);
}
/* Logical operations */
--
1.6.0.5
- [Qemu-devel] [PATCH 00/14] target-ppc: add floating-point AltiVec instructions, Nathan Froyd, 2009/01/22
- [Qemu-devel] [PATCH 05/14] Make mtvscr use a helper,
Nathan Froyd <=
- [Qemu-devel] [PATCH 14/14] Add vrsqrtefp instruction, Nathan Froyd, 2009/01/22
- [Qemu-devel] [PATCH 09/14] Add vcmp{eq,ge,gt,b}fp{,.} instructions, Nathan Froyd, 2009/01/22
- [Qemu-devel] [PATCH 13/14] Add vrefp instruction, Nathan Froyd, 2009/01/22
- [Qemu-devel] [PATCH 01/14] Add f field to ppc_avr_t, Nathan Froyd, 2009/01/22
- [Qemu-devel] [PATCH 10/14] Add vrfi{m,n,p,z} instructions, Nathan Froyd, 2009/01/22
- [Qemu-devel] [PATCH 12/14] Add vct{u,s}xs instructions, Nathan Froyd, 2009/01/22
- [Qemu-devel] [PATCH 02/14] Add various NaN-handling macros, Nathan Froyd, 2009/01/22
- [Qemu-devel] [PATCH 04/14] Add calls to initialize VSCR on appropriate machines, Nathan Froyd, 2009/01/22
- [Qemu-devel] [PATCH 11/14] Add vcf{u,s}x instructions, Nathan Froyd, 2009/01/22
- [Qemu-devel] [PATCH 03/14] Rename spe_status to vec_status, Nathan Froyd, 2009/01/22