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target-sparc: Implement FALIGNDATA inline. 

This is a relatively simple sequence of shifts.

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2011-10-18 09:41:30 -07:00
parent 793a137a41
commit 50c796f9d8
3 changed files with 26 additions and 19 deletions
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1
target-sparc/helper.h
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@ -125,7 +125,6 @@ DEF_HELPER_1(fqtoi, s32, env)
DEF_HELPER_2(fstox, s64, env, f32)
DEF_HELPER_2(fdtox, s64, env, f64)
DEF_HELPER_1(fqtox, s64, env)
DEF_HELPER_3(faligndata, i64, env, i64, i64)
DEF_HELPER_FLAGS_2(fpmerge, TCG_CALL_CONST | TCG_CALL_PURE, i64, i64, i64)
DEF_HELPER_FLAGS_2(fmul8x16, TCG_CALL_CONST | TCG_CALL_PURE, i64, i64, i64)

32
target-sparc/translate.c
View File

@ -2338,6 +2338,31 @@ static void gen_alignaddr(TCGv dst, TCGv s1, TCGv s2, bool left)
tcg_temp_free(tmp);
}
static void gen_faligndata(TCGv dst, TCGv gsr, TCGv s1, TCGv s2)
{
TCGv t1, t2, shift;
t1 = tcg_temp_new();
t2 = tcg_temp_new();
shift = tcg_temp_new();
tcg_gen_andi_tl(shift, gsr, 7);
tcg_gen_shli_tl(shift, shift, 3);
tcg_gen_shl_tl(t1, s1, shift);
/* A shift of 64 does not produce 0 in TCG. Divide this into a
shift of (up to 63) followed by a constant shift of 1. */
tcg_gen_xori_tl(shift, shift, 63);
tcg_gen_shr_tl(t2, s2, shift);
tcg_gen_shri_tl(t2, t2, 1);
tcg_gen_or_tl(dst, t1, t2);
tcg_temp_free(t1);
tcg_temp_free(t2);
tcg_temp_free(shift);
}
#endif
#define CHECK_IU_FEATURE(dc, FEATURE) \
@ -4307,12 +4332,7 @@ static void disas_sparc_insn(DisasContext * dc)
break;
case 0x048: /* VIS I faligndata */
CHECK_FPU_FEATURE(dc, VIS1);
cpu_src1_64 = gen_load_fpr_D(dc, rs1);
cpu_src2_64 = gen_load_fpr_D(dc, rs2);
cpu_dst_64 = gen_dest_fpr_D();
gen_helper_faligndata(cpu_dst_64, cpu_env,
cpu_src1_64, cpu_src2_64);
gen_store_fpr_D(dc, rd, cpu_dst_64);
gen_gsr_fop_DDD(dc, rd, rs1, rs2, gen_faligndata);
break;
case 0x04b: /* VIS I fpmerge */
CHECK_FPU_FEATURE(dc, VIS1);

12
target-sparc/vis_helper.c
View File

@ -41,18 +41,6 @@ target_ulong helper_array8(target_ulong pixel_addr, target_ulong cubesize)
GET_FIELD_SP(pixel_addr, 11, 12);
}
uint64_t helper_faligndata(CPUState *env, uint64_t src1, uint64_t src2)
{
uint64_t tmp;
tmp = src1 << ((env->gsr & 7) * 8);
/* on many architectures a shift of 64 does nothing */
if ((env->gsr & 7) != 0) {
tmp |= src2 >> (64 - (env->gsr & 7) * 8);
}
return tmp;
}
#ifdef HOST_WORDS_BIGENDIAN
#define VIS_B64(n) b[7 - (n)]
#define VIS_W64(n) w[3 - (n)]