diff options
Diffstat (limited to 'target-ppc/op_helper.c')
| -rw-r--r-- | target-ppc/op_helper.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c index 302832474e..c931adbd98 100644 --- a/target-ppc/op_helper.c +++ b/target-ppc/op_helper.c @@ -2082,6 +2082,45 @@ VARITH(uwm, u32) #undef VARITH_DO #undef VARITH +#define VARITHSAT_CASE(type, op, cvt, element) \ + { \ + type result = (type)a->element[i] op (type)b->element[i]; \ + r->element[i] = cvt(result, &sat); \ + } + +#define VARITHSAT_DO(name, op, optype, cvt, element) \ + void helper_v##name (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \ + { \ + int sat = 0; \ + int i; \ + for (i = 0; i < ARRAY_SIZE(r->element); i++) { \ + switch (sizeof(r->element[0])) { \ + case 1: VARITHSAT_CASE(optype, op, cvt, element); break; \ + case 2: VARITHSAT_CASE(optype, op, cvt, element); break; \ + case 4: VARITHSAT_CASE(optype, op, cvt, element); break; \ + } \ + } \ + if (sat) { \ + env->vscr |= (1 << VSCR_SAT); \ + } \ + } +#define VARITHSAT_SIGNED(suffix, element, optype, cvt) \ + VARITHSAT_DO(adds##suffix##s, +, optype, cvt, element) \ + VARITHSAT_DO(subs##suffix##s, -, optype, cvt, element) +#define VARITHSAT_UNSIGNED(suffix, element, optype, cvt) \ + VARITHSAT_DO(addu##suffix##s, +, optype, cvt, element) \ + VARITHSAT_DO(subu##suffix##s, -, optype, cvt, element) +VARITHSAT_SIGNED(b, s8, int16_t, cvtshsb) +VARITHSAT_SIGNED(h, s16, int32_t, cvtswsh) +VARITHSAT_SIGNED(w, s32, int64_t, cvtsdsw) +VARITHSAT_UNSIGNED(b, u8, uint16_t, cvtshub) +VARITHSAT_UNSIGNED(h, u16, uint32_t, cvtswuh) +VARITHSAT_UNSIGNED(w, u32, uint64_t, cvtsduw) +#undef VARITHSAT_CASE +#undef VARITHSAT_DO +#undef VARITHSAT_SIGNED +#undef VARITHSAT_UNSIGNED + #define VAVG_DO(name, element, etype) \ void helper_v##name (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \ { \ |