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target-sparc: Implement PDIST. 

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2011-10-17 17:32:26 -07:00
parent 445167723d
commit f888300b81
3 changed files with 41 additions and 2 deletions
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1
target-sparc/helper.h
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@ -137,6 +137,7 @@ DEF_HELPER_FLAGS_2(fmul8ulx16, TCG_CALL_CONST | TCG_CALL_PURE, i64, i64, i64)
DEF_HELPER_FLAGS_2(fmuld8sux16, TCG_CALL_CONST | TCG_CALL_PURE, i64, i64, i64)
DEF_HELPER_FLAGS_2(fmuld8ulx16, TCG_CALL_CONST | TCG_CALL_PURE, i64, i64, i64)
DEF_HELPER_FLAGS_2(fexpand, TCG_CALL_CONST | TCG_CALL_PURE, i64, i64, i64)
DEF_HELPER_FLAGS_3(pdist, TCG_CALL_CONST | TCG_CALL_PURE, i64, i64, i64, i64)
#define VIS_HELPER(name) \
DEF_HELPER_FLAGS_2(f ## name ## 16, TCG_CALL_CONST | TCG_CALL_PURE, \
i64, i64, i64) \

21
target-sparc/translate.c
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@ -1738,6 +1738,21 @@ static inline void gen_ne_fop_DDD(DisasContext *dc, int rd, int rs1, int rs2,
gen_store_fpr_D(dc, rd, dst);
}
static inline void gen_ne_fop_DDDD(DisasContext *dc, int rd, int rs1, int rs2,
void (*gen)(TCGv_i64, TCGv_i64, TCGv_i64, TCGv_i64))
{
TCGv_i64 dst, src0, src1, src2;
src1 = gen_load_fpr_D(dc, rs1);
src2 = gen_load_fpr_D(dc, rs2);
src0 = gen_load_fpr_D(dc, rd);
dst = gen_dest_fpr_D();
gen(dst, src0, src1, src2);
gen_store_fpr_D(dc, rd, dst);
}
#endif
static inline void gen_fop_QQ(DisasContext *dc, int rd, int rs,
@ -4059,9 +4074,11 @@ static void disas_sparc_insn(DisasContext * dc)
case 0x03a: /* VIS I fpack32 */
case 0x03b: /* VIS I fpack16 */
case 0x03d: /* VIS I fpackfix */
case 0x03e: /* VIS I pdist */
// XXX
goto illegal_insn;
case 0x03e: /* VIS I pdist */
CHECK_FPU_FEATURE(dc, VIS1);
gen_ne_fop_DDDD(dc, rd, rs1, rs2, gen_helper_pdist);
break;
case 0x048: /* VIS I faligndata */
CHECK_FPU_FEATURE(dc, VIS1);
cpu_src1_64 = gen_load_fpr_D(dc, rs1);

21
target-sparc/vis_helper.c
View File

@ -396,3 +396,24 @@ VIS_CMPHELPER(helper_fcmpgt, FCMPGT)
VIS_CMPHELPER(helper_fcmpeq, FCMPEQ)
VIS_CMPHELPER(helper_fcmple, FCMPLE)
VIS_CMPHELPER(helper_fcmpne, FCMPNE)
uint64_t helper_pdist(uint64_t sum, uint64_t src1, uint64_t src2)
{
int i;
for (i = 0; i < 8; i++) {
int s1, s2;
s1 = (src1 >> (56 - (i * 8))) & 0xff;
s2 = (src2 >> (56 - (i * 8))) & 0xff;
/* Absolute value of difference. */
s1 -= s2;
if (s1 < 0) {
s1 = -s1;
}
sum += s1;
}
return sum;
}