haraldwolff/qemu-patch-raspberry4
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target-sparc: Implement BMASK/BSHUFFLE.

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Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2011-10-18 09:24:43 -07:00
parent add545ab11
commit 793a137a41
3 changed files with 40 additions and 4 deletions
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1
target-sparc/helper.h
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@ -140,6 +140,7 @@ DEF_HELPER_FLAGS_3(pdist, TCG_CALL_CONST | TCG_CALL_PURE, i64, i64, i64, i64)
DEF_HELPER_FLAGS_2(fpack16, TCG_CALL_CONST | TCG_CALL_PURE, i32, i64, i64)
DEF_HELPER_FLAGS_3(fpack32, TCG_CALL_CONST | TCG_CALL_PURE, i64, i64, i64, i64)
DEF_HELPER_FLAGS_2(fpackfix, TCG_CALL_CONST | TCG_CALL_PURE, i32, i64, i64)
DEF_HELPER_FLAGS_3(bshuffle, 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) \

14
target-sparc/translate.c
View file

@ -4192,8 +4192,13 @@ static void disas_sparc_insn(DisasContext * dc)
gen_movl_TN_reg(rd, cpu_dst);
break;
case 0x019: /* VIS II bmask */
// XXX
goto illegal_insn;
CHECK_FPU_FEATURE(dc, VIS2);
cpu_src1 = get_src1(insn, cpu_src1);
cpu_src2 = get_src1(insn, cpu_src2);
tcg_gen_add_tl(cpu_dst, cpu_src1, cpu_src2);
tcg_gen_deposit_tl(cpu_gsr, cpu_gsr, cpu_dst, 32, 32);
gen_movl_TN_reg(rd, cpu_dst);
break;
case 0x020: /* VIS I fcmple16 */
CHECK_FPU_FEATURE(dc, VIS1);
cpu_src1_64 = gen_load_fpr_D(dc, rs1);
@ -4314,8 +4319,9 @@ static void disas_sparc_insn(DisasContext * dc)
gen_ne_fop_DDD(dc, rd, rs1, rs2, gen_helper_fpmerge);
break;
case 0x04c: /* VIS II bshuffle */
// XXX
goto illegal_insn;
CHECK_FPU_FEATURE(dc, VIS2);
gen_gsr_fop_DDD(dc, rd, rs1, rs2, gen_helper_bshuffle);
break;
case 0x04d: /* VIS I fexpand */
CHECK_FPU_FEATURE(dc, VIS1);
gen_ne_fop_DDD(dc, rd, rs1, rs2, gen_helper_fexpand);

29
target-sparc/vis_helper.c
View file

@ -470,3 +470,32 @@ uint32_t helper_fpackfix(uint64_t gsr, uint64_t rs2)
return ret;
}
uint64 helper_bshuffle(uint64_t gsr, uint64_t src1, uint64_t src2)
{
union {
uint64_t ll[2];
uint8_t b[16];
} s;
VIS64 r;
uint32_t i, mask, host;
/* Set up S such that we can index across all of the bytes. */
#ifdef HOST_WORDS_BIGENDIAN
s.ll[0] = src1;
s.ll[1] = src2;
host = 0;
#else
s.ll[1] = src1;
s.ll[0] = src2;
host = 15;
#endif
mask = gsr >> 32;
for (i = 0; i < 8; ++i) {
unsigned e = (mask >> (28 - i*4)) & 0xf;
r.VIS_B64(i) = s.b[e ^ host];
}
return r.ll;
}