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sh4: Add FMAC instruction support 

Signed-off-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Lionel Landwerlin <lionel.landwerlin@openwide.fr>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6309 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2009-01-14 21:02:59 +00:00
parent 1b6e5f9906
commit 5b7141a11e
3 changed files with 23 additions and 0 deletions
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1
target-sh4/helper.h
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@ -35,6 +35,7 @@ DEF_HELPER_2(fdiv_FT, i32, i32, i32)
DEF_HELPER_2(fdiv_DT, i64, i64, i64)
DEF_HELPER_1(float_FT, i32, i32)
DEF_HELPER_1(float_DT, i64, i32)
DEF_HELPER_3(fmac_FT, i32, i32, i32, i32)
DEF_HELPER_2(fmul_FT, i32, i32, i32)
DEF_HELPER_2(fmul_DT, i64, i64, i64)
DEF_HELPER_1(fneg_T, i32, i32)

11
target-sh4/op_helper.c
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@ -531,6 +531,17 @@ uint64_t helper_float_DT(uint32_t t0)
return d.ll;
}
uint32_t helper_fmac_FT(uint32_t t0, uint32_t t1, uint32_t t2)
{
CPU_FloatU f0, f1, f2;
f0.l = t0;
f1.l = t1;
f2.l = t2;
f0.f = float32_mul(f0.f, f1.f, &env->fp_status);
f0.f = float32_add(f0.f, f2.f, &env->fp_status);
return f0.l;
}
uint32_t helper_fmul_FT(uint32_t t0, uint32_t t1)
{
CPU_FloatU f0, f1;

11
target-sh4/translate.c
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@ -1176,6 +1176,17 @@ static void _decode_opc(DisasContext * ctx)
}
}
return;
case 0xf00e: /* fmac FR0,RM,Rn */
{
CHECK_FPU_ENABLED
if (ctx->fpscr & FPSCR_PR) {
break; /* illegal instruction */
} else {
gen_helper_fmac_FT(cpu_fregs[FREG(B11_8)],
cpu_fregs[FREG(0)], cpu_fregs[FREG(B7_4)], cpu_fregs[FREG(B11_8)]);
return;
}
}
}
switch (ctx->opcode & 0xff00) {