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Make mtvscr use a helper 

Do this so we can set float statuses once per mtvscr, rather than once
per Altivec instruction.

Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6508 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2009-02-03 19:56:09 +00:00
parent cf8358c8f7
commit 6e87b7c7bf
3 changed files with 15 additions and 5 deletions
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1
target-ppc/helper.h
View File

@ -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)

10
target-ppc/op_helper.c
View File

@ -2050,6 +2050,16 @@ 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;

9
target-ppc/translate.c
View File

@ -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 */