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int_helper.c
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/*
* PowerPC integer and vector emulation helpers for QEMU.
*
* Copyright (c) 2003-2007 Jocelyn Mayer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "exec/exec-all.h"
#include "qemu/host-utils.h"
#include "exec/helper-proto.h"
#include "crypto/aes.h"
#include "helper_regs.h"
/*****************************************************************************/
/* Fixed point operations helpers */
target_ulong helper_divweu(CPUPPCState *env, target_ulong ra, target_ulong rb,
uint32_t oe)
{
uint64_t rt = 0;
int overflow = 0;
uint64_t dividend = (uint64_t)ra << 32;
uint64_t divisor = (uint32_t)rb;
if (unlikely(divisor == 0)) {
overflow = 1;
} else {
rt = dividend / divisor;
overflow = rt > UINT32_MAX;
}
if (unlikely(overflow)) {
rt = 0; /* Undefined */
}
if (oe) {
if (unlikely(overflow)) {
env->so = env->ov = 1;
} else {
env->ov = 0;
}
}
return (target_ulong)rt;
}
target_ulong helper_divwe(CPUPPCState *env, target_ulong ra, target_ulong rb,
uint32_t oe)
{
int64_t rt = 0;
int overflow = 0;
int64_t dividend = (int64_t)ra << 32;
int64_t divisor = (int64_t)((int32_t)rb);
if (unlikely((divisor == 0) ||
((divisor == -1ull) && (dividend == INT64_MIN)))) {
overflow = 1;
} else {
rt = dividend / divisor;
overflow = rt != (int32_t)rt;
}
if (unlikely(overflow)) {
rt = 0; /* Undefined */
}
if (oe) {
if (unlikely(overflow)) {
env->so = env->ov = 1;
} else {
env->ov = 0;
}
}
return (target_ulong)rt;
}
#if defined(TARGET_PPC64)
uint64_t helper_divdeu(CPUPPCState *env, uint64_t ra, uint64_t rb, uint32_t oe)
{
uint64_t rt = 0;
int overflow = 0;
overflow = divu128(&rt, &ra, rb);
if (unlikely(overflow)) {
rt = 0; /* Undefined */
}
if (oe) {
if (unlikely(overflow)) {
env->so = env->ov = 1;
} else {
env->ov = 0;
}
}
return rt;
}
uint64_t helper_divde(CPUPPCState *env, uint64_t rau, uint64_t rbu, uint32_t oe)
{
int64_t rt = 0;
int64_t ra = (int64_t)rau;
int64_t rb = (int64_t)rbu;
int overflow = divs128(&rt, &ra, rb);
if (unlikely(overflow)) {
rt = 0; /* Undefined */
}
if (oe) {
if (unlikely(overflow)) {
env->so = env->ov = 1;
} else {
env->ov = 0;
}
}
return rt;
}
#endif
target_ulong helper_cntlzw(target_ulong t)
{
return clz32(t);
}
target_ulong helper_cnttzw(target_ulong t)
{
return ctz32(t);
}
#if defined(TARGET_PPC64)
/* if x = 0xab, returns 0xababababababababa */
#define pattern(x) (((x) & 0xff) * (~(target_ulong)0 / 0xff))
/* substract 1 from each byte, and with inverse, check if MSB is set at each
* byte.
* i.e. ((0x00 - 0x01) & ~(0x00)) & 0x80
* (0xFF & 0xFF) & 0x80 = 0x80 (zero found)
*/
#define haszero(v) (((v) - pattern(0x01)) & ~(v) & pattern(0x80))
/* When you XOR the pattern and there is a match, that byte will be zero */
#define hasvalue(x, n) (haszero((x) ^ pattern(n)))
uint32_t helper_cmpeqb(target_ulong ra, target_ulong rb)
{
return hasvalue(rb, ra) ? 1 << CRF_GT : 0;
}
#undef pattern
#undef haszero
#undef hasvalue
target_ulong helper_cntlzd(target_ulong t)
{
return clz64(t);
}
target_ulong helper_cnttzd(target_ulong t)
{
return ctz64(t);
}
#endif
#if defined(TARGET_PPC64)
uint64_t helper_bpermd(uint64_t rs, uint64_t rb)
{
int i;
uint64_t ra = 0;
for (i = 0; i < 8; i++) {
int index = (rs >> (i*8)) & 0xFF;
if (index < 64) {
if (rb & (1ull << (63-index))) {
ra |= 1 << i;
}
}
}
return ra;
}
#endif
target_ulong helper_cmpb(target_ulong rs, target_ulong rb)
{
target_ulong mask = 0xff;
target_ulong ra = 0;
int i;
for (i = 0; i < sizeof(target_ulong); i++) {
if ((rs & mask) == (rb & mask)) {
ra |= mask;
}
mask <<= 8;
}
return ra;
}
/* shift right arithmetic helper */
target_ulong helper_sraw(CPUPPCState *env, target_ulong value,
target_ulong shift)
{
int32_t ret;
if (likely(!(shift & 0x20))) {
if (likely((uint32_t)shift != 0)) {
shift &= 0x1f;
ret = (int32_t)value >> shift;
if (likely(ret >= 0 || (value & ((1 << shift) - 1)) == 0)) {
env->ca = 0;
} else {
env->ca = 1;
}
} else {
ret = (int32_t)value;
env->ca = 0;
}
} else {
ret = (int32_t)value >> 31;
env->ca = (ret != 0);
}
return (target_long)ret;
}
#if defined(TARGET_PPC64)
target_ulong helper_srad(CPUPPCState *env, target_ulong value,
target_ulong shift)
{
int64_t ret;
if (likely(!(shift & 0x40))) {
if (likely((uint64_t)shift != 0)) {
shift &= 0x3f;
ret = (int64_t)value >> shift;
if (likely(ret >= 0 || (value & ((1ULL << shift) - 1)) == 0)) {
env->ca = 0;
} else {
env->ca = 1;
}
} else {
ret = (int64_t)value;
env->ca = 0;
}
} else {
ret = (int64_t)value >> 63;
env->ca = (ret != 0);
}
return ret;
}
#endif
#if defined(TARGET_PPC64)
target_ulong helper_popcntb(target_ulong val)
{
val = (val & 0x5555555555555555ULL) + ((val >> 1) &
0x5555555555555555ULL);
val = (val & 0x3333333333333333ULL) + ((val >> 2) &
0x3333333333333333ULL);
val = (val & 0x0f0f0f0f0f0f0f0fULL) + ((val >> 4) &
0x0f0f0f0f0f0f0f0fULL);
return val;
}
target_ulong helper_popcntw(target_ulong val)
{
val = (val & 0x5555555555555555ULL) + ((val >> 1) &
0x5555555555555555ULL);
val = (val & 0x3333333333333333ULL) + ((val >> 2) &
0x3333333333333333ULL);
val = (val & 0x0f0f0f0f0f0f0f0fULL) + ((val >> 4) &
0x0f0f0f0f0f0f0f0fULL);
val = (val & 0x00ff00ff00ff00ffULL) + ((val >> 8) &
0x00ff00ff00ff00ffULL);
val = (val & 0x0000ffff0000ffffULL) + ((val >> 16) &
0x0000ffff0000ffffULL);
return val;
}
target_ulong helper_popcntd(target_ulong val)
{
return ctpop64(val);
}
#else
target_ulong helper_popcntb(target_ulong val)
{
val = (val & 0x55555555) + ((val >> 1) & 0x55555555);
val = (val & 0x33333333) + ((val >> 2) & 0x33333333);
val = (val & 0x0f0f0f0f) + ((val >> 4) & 0x0f0f0f0f);
return val;
}
target_ulong helper_popcntw(target_ulong val)
{
val = (val & 0x55555555) + ((val >> 1) & 0x55555555);
val = (val & 0x33333333) + ((val >> 2) & 0x33333333);
val = (val & 0x0f0f0f0f) + ((val >> 4) & 0x0f0f0f0f);
val = (val & 0x00ff00ff) + ((val >> 8) & 0x00ff00ff);
val = (val & 0x0000ffff) + ((val >> 16) & 0x0000ffff);
return val;
}
#endif
/*****************************************************************************/
/* PowerPC 601 specific instructions (POWER bridge) */
target_ulong helper_div(CPUPPCState *env, target_ulong arg1, target_ulong arg2)
{
uint64_t tmp = (uint64_t)arg1 << 32 | env->spr[SPR_MQ];
if (((int32_t)tmp == INT32_MIN && (int32_t)arg2 == (int32_t)-1) ||
(int32_t)arg2 == 0) {
env->spr[SPR_MQ] = 0;
return INT32_MIN;
} else {
env->spr[SPR_MQ] = tmp % arg2;
return tmp / (int32_t)arg2;
}
}
target_ulong helper_divo(CPUPPCState *env, target_ulong arg1,
target_ulong arg2)
{
uint64_t tmp = (uint64_t)arg1 << 32 | env->spr[SPR_MQ];
if (((int32_t)tmp == INT32_MIN && (int32_t)arg2 == (int32_t)-1) ||
(int32_t)arg2 == 0) {
env->so = env->ov = 1;
env->spr[SPR_MQ] = 0;
return INT32_MIN;
} else {
env->spr[SPR_MQ] = tmp % arg2;
tmp /= (int32_t)arg2;
if ((int32_t)tmp != tmp) {
env->so = env->ov = 1;
} else {
env->ov = 0;
}
return tmp;
}
}
target_ulong helper_divs(CPUPPCState *env, target_ulong arg1,
target_ulong arg2)
{
if (((int32_t)arg1 == INT32_MIN && (int32_t)arg2 == (int32_t)-1) ||
(int32_t)arg2 == 0) {
env->spr[SPR_MQ] = 0;
return INT32_MIN;
} else {
env->spr[SPR_MQ] = (int32_t)arg1 % (int32_t)arg2;
return (int32_t)arg1 / (int32_t)arg2;
}
}
target_ulong helper_divso(CPUPPCState *env, target_ulong arg1,
target_ulong arg2)
{
if (((int32_t)arg1 == INT32_MIN && (int32_t)arg2 == (int32_t)-1) ||
(int32_t)arg2 == 0) {
env->so = env->ov = 1;
env->spr[SPR_MQ] = 0;
return INT32_MIN;
} else {
env->ov = 0;
env->spr[SPR_MQ] = (int32_t)arg1 % (int32_t)arg2;
return (int32_t)arg1 / (int32_t)arg2;
}
}
/*****************************************************************************/
/* 602 specific instructions */
/* mfrom is the most crazy instruction ever seen, imho ! */
/* Real implementation uses a ROM table. Do the same */
/* Extremely decomposed:
* -arg / 256
* return 256 * log10(10 + 1.0) + 0.5
*/
#if !defined(CONFIG_USER_ONLY)
target_ulong helper_602_mfrom(target_ulong arg)
{
if (likely(arg < 602)) {
#include "mfrom_table.c"
return mfrom_ROM_table[arg];
} else {
return 0;
}
}
#endif
/*****************************************************************************/
/* Altivec extension helpers */
#if defined(HOST_WORDS_BIGENDIAN)
#define HI_IDX 0
#define LO_IDX 1
#define AVRB(i) u8[i]
#define AVRW(i) u32[i]
#else
#define HI_IDX 1
#define LO_IDX 0
#define AVRB(i) u8[15-(i)]
#define AVRW(i) u32[3-(i)]
#endif
#if defined(HOST_WORDS_BIGENDIAN)
#define VECTOR_FOR_INORDER_I(index, element) \
for (index = 0; index < ARRAY_SIZE(r->element); index++)
#else
#define VECTOR_FOR_INORDER_I(index, element) \
for (index = ARRAY_SIZE(r->element)-1; index >= 0; index--)
#endif
/* Saturating arithmetic helpers. */
#define SATCVT(from, to, from_type, to_type, min, max) \
static inline to_type cvt##from##to(from_type x, int *sat) \
{ \
to_type r; \
\
if (x < (from_type)min) { \
r = min; \
*sat = 1; \
} else if (x > (from_type)max) { \
r = max; \
*sat = 1; \
} else { \
r = x; \
} \
return r; \
}
#define SATCVTU(from, to, from_type, to_type, min, max) \
static inline to_type cvt##from##to(from_type x, int *sat) \
{ \
to_type r; \
\
if (x > (from_type)max) { \
r = max; \
*sat = 1; \
} else { \
r = x; \
} \
return r; \
}
SATCVT(sh, sb, int16_t, int8_t, INT8_MIN, INT8_MAX)
SATCVT(sw, sh, int32_t, int16_t, INT16_MIN, INT16_MAX)
SATCVT(sd, sw, int64_t, int32_t, INT32_MIN, INT32_MAX)
SATCVTU(uh, ub, uint16_t, uint8_t, 0, UINT8_MAX)
SATCVTU(uw, uh, uint32_t, uint16_t, 0, UINT16_MAX)
SATCVTU(ud, uw, uint64_t, uint32_t, 0, UINT32_MAX)
SATCVT(sh, ub, int16_t, uint8_t, 0, UINT8_MAX)
SATCVT(sw, uh, int32_t, uint16_t, 0, UINT16_MAX)
SATCVT(sd, uw, int64_t, uint32_t, 0, UINT32_MAX)
#undef SATCVT
#undef SATCVTU
void helper_lvsl(ppc_avr_t *r, target_ulong sh)
{
int i, j = (sh & 0xf);
VECTOR_FOR_INORDER_I(i, u8) {
r->u8[i] = j++;
}
}
void helper_lvsr(ppc_avr_t *r, target_ulong sh)
{
int i, j = 0x10 - (sh & 0xf);
VECTOR_FOR_INORDER_I(i, u8) {
r->u8[i] = j++;
}
}
void helper_mtvscr(CPUPPCState *env, ppc_avr_t *r)
{
#if defined(HOST_WORDS_BIGENDIAN)
env->vscr = r->u32[3];
#else
env->vscr = r->u32[0];
#endif
set_flush_to_zero(vscr_nj, &env->vec_status);
}
void helper_vaddcuw(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
{
int i;
for (i = 0; i < ARRAY_SIZE(r->u32); i++) {
r->u32[i] = ~a->u32[i] < b->u32[i];
}
}
#define VARITH_DO(name, op, element) \
void helper_v##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
{ \
int i; \
\
for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
r->element[i] = a->element[i] op b->element[i]; \
} \
}
#define VARITH(suffix, element) \
VARITH_DO(add##suffix, +, element) \
VARITH_DO(sub##suffix, -, element)
VARITH(ubm, u8)
VARITH(uhm, u16)
VARITH(uwm, u32)
VARITH(udm, u64)
VARITH_DO(muluwm, *, u32)
#undef VARITH_DO
#undef VARITH
#define VARITHFP(suffix, func) \
void helper_v##suffix(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, \
ppc_avr_t *b) \
{ \
int i; \
\
for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
r->f[i] = func(a->f[i], b->f[i], &env->vec_status); \
} \
}
VARITHFP(addfp, float32_add)
VARITHFP(subfp, float32_sub)
VARITHFP(minfp, float32_min)
VARITHFP(maxfp, float32_max)
#undef VARITHFP
#define VARITHFPFMA(suffix, type) \
void helper_v##suffix(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, \
ppc_avr_t *b, ppc_avr_t *c) \
{ \
int i; \
for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
r->f[i] = float32_muladd(a->f[i], c->f[i], b->f[i], \
type, &env->vec_status); \
} \
}
VARITHFPFMA(maddfp, 0);
VARITHFPFMA(nmsubfp, float_muladd_negate_result | float_muladd_negate_c);
#undef VARITHFPFMA
#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(CPUPPCState *env, 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) \
{ \
int i; \
\
for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
etype x = (etype)a->element[i] + (etype)b->element[i] + 1; \
r->element[i] = x >> 1; \
} \
}
#define VAVG(type, signed_element, signed_type, unsigned_element, \
unsigned_type) \
VAVG_DO(avgs##type, signed_element, signed_type) \
VAVG_DO(avgu##type, unsigned_element, unsigned_type)
VAVG(b, s8, int16_t, u8, uint16_t)
VAVG(h, s16, int32_t, u16, uint32_t)
VAVG(w, s32, int64_t, u32, uint64_t)
#undef VAVG_DO
#undef VAVG
#define VABSDU_DO(name, element) \
void helper_v##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
{ \
int i; \
\
for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
r->element[i] = (a->element[i] > b->element[i]) ? \
(a->element[i] - b->element[i]) : \
(b->element[i] - a->element[i]); \
} \
}
/* VABSDU - Vector absolute difference unsigned
* name - instruction mnemonic suffix (b: byte, h: halfword, w: word)
* element - element type to access from vector
*/
#define VABSDU(type, element) \
VABSDU_DO(absdu##type, element)
VABSDU(b, u8)
VABSDU(h, u16)
VABSDU(w, u32)
#undef VABSDU_DO
#undef VABSDU
#define VCF(suffix, cvt, element) \
void helper_vcf##suffix(CPUPPCState *env, ppc_avr_t *r, \
ppc_avr_t *b, uint32_t uim) \
{ \
int i; \
\
for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
float32 t = cvt(b->element[i], &env->vec_status); \
r->f[i] = float32_scalbn(t, -uim, &env->vec_status); \
} \
}
VCF(ux, uint32_to_float32, u32)
VCF(sx, int32_to_float32, s32)
#undef VCF
#define VCMP_DO(suffix, compare, element, record) \
void helper_vcmp##suffix(CPUPPCState *env, ppc_avr_t *r, \
ppc_avr_t *a, ppc_avr_t *b) \
{ \
uint64_t ones = (uint64_t)-1; \
uint64_t all = ones; \
uint64_t none = 0; \
int i; \
\
for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
uint64_t result = (a->element[i] compare b->element[i] ? \
ones : 0x0); \
switch (sizeof(a->element[0])) { \
case 8: \
r->u64[i] = result; \
break; \
case 4: \
r->u32[i] = result; \
break; \
case 2: \
r->u16[i] = result; \
break; \
case 1: \
r->u8[i] = result; \
break; \
} \
all &= result; \
none |= result; \
} \
if (record) { \
env->crf[6] = ((all != 0) << 3) | ((none == 0) << 1); \
} \
}
#define VCMP(suffix, compare, element) \
VCMP_DO(suffix, compare, element, 0) \
VCMP_DO(suffix##_dot, compare, element, 1)
VCMP(equb, ==, u8)
VCMP(equh, ==, u16)
VCMP(equw, ==, u32)
VCMP(equd, ==, u64)
VCMP(gtub, >, u8)
VCMP(gtuh, >, u16)
VCMP(gtuw, >, u32)
VCMP(gtud, >, u64)
VCMP(gtsb, >, s8)
VCMP(gtsh, >, s16)
VCMP(gtsw, >, s32)
VCMP(gtsd, >, s64)
#undef VCMP_DO
#undef VCMP
#define VCMPNEZ_DO(suffix, element, etype, record) \
void helper_vcmpnez##suffix(CPUPPCState *env, ppc_avr_t *r, \
ppc_avr_t *a, ppc_avr_t *b) \
{ \
etype ones = (etype)-1; \
etype all = ones; \
etype none = 0; \
int i; \
\
for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
etype result = ((a->element[i] == 0) \
|| (b->element[i] == 0) \
|| (a->element[i] != b->element[i]) ? \
ones : 0x0); \
r->element[i] = result; \
all &= result; \
none |= result; \
} \
if (record) { \
env->crf[6] = ((all != 0) << 3) | ((none == 0) << 1); \
} \
}
/* VCMPNEZ - Vector compare not equal to zero
* suffix - instruction mnemonic suffix (b: byte, h: halfword, w: word)
* element - element type to access from vector
*/
#define VCMPNEZ(suffix, element, etype) \
VCMPNEZ_DO(suffix, element, etype, 0) \
VCMPNEZ_DO(suffix##_dot, element, etype, 1)
VCMPNEZ(b, u8, uint8_t)
VCMPNEZ(h, u16, uint16_t)
VCMPNEZ(w, u32, uint32_t)
#undef VCMPNEZ_DO
#undef VCMPNEZ
#define VCMPFP_DO(suffix, compare, order, record) \
void helper_vcmp##suffix(CPUPPCState *env, ppc_avr_t *r, \
ppc_avr_t *a, ppc_avr_t *b) \
{ \
uint32_t ones = (uint32_t)-1; \
uint32_t all = ones; \
uint32_t none = 0; \
int i; \
\
for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
uint32_t result; \
int rel = float32_compare_quiet(a->f[i], b->f[i], \
&env->vec_status); \
if (rel == float_relation_unordered) { \
result = 0; \
} else if (rel compare order) { \
result = ones; \
} else { \
result = 0; \
} \
r->u32[i] = result; \
all &= result; \
none |= result; \
} \
if (record) { \
env->crf[6] = ((all != 0) << 3) | ((none == 0) << 1); \
} \
}
#define VCMPFP(suffix, compare, order) \
VCMPFP_DO(suffix, compare, order, 0) \
VCMPFP_DO(suffix##_dot, compare, order, 1)
VCMPFP(eqfp, ==, float_relation_equal)
VCMPFP(gefp, !=, float_relation_less)
VCMPFP(gtfp, ==, float_relation_greater)
#undef VCMPFP_DO
#undef VCMPFP
static inline void vcmpbfp_internal(CPUPPCState *env, ppc_avr_t *r,
ppc_avr_t *a, ppc_avr_t *b, int record)
{
int i;
int all_in = 0;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
int le_rel = float32_compare_quiet(a->f[i], b->f[i], &env->vec_status);
if (le_rel == float_relation_unordered) {
r->u32[i] = 0xc0000000;
all_in = 1;
} else {
float32 bneg = float32_chs(b->f[i]);
int ge_rel = float32_compare_quiet(a->f[i], bneg, &env->vec_status);
int le = le_rel != float_relation_greater;
int ge = ge_rel != float_relation_less;
r->u32[i] = ((!le) << 31) | ((!ge) << 30);
all_in |= (!le | !ge);
}
}
if (record) {
env->crf[6] = (all_in == 0) << 1;
}
}
void helper_vcmpbfp(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
{
vcmpbfp_internal(env, r, a, b, 0);
}
void helper_vcmpbfp_dot(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
ppc_avr_t *b)
{
vcmpbfp_internal(env, r, a, b, 1);
}
#define VCT(suffix, satcvt, element) \
void helper_vct##suffix(CPUPPCState *env, ppc_avr_t *r, \
ppc_avr_t *b, uint32_t uim) \
{ \
int i; \
int sat = 0; \
float_status s = env->vec_status; \
\
set_float_rounding_mode(float_round_to_zero, &s); \
for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
if (float32_is_any_nan(b->f[i])) { \
r->element[i] = 0; \
} else { \
float64 t = float32_to_float64(b->f[i], &s); \
int64_t j; \
\
t = float64_scalbn(t, uim, &s); \
j = float64_to_int64(t, &s); \
r->element[i] = satcvt(j, &sat); \
} \
} \
if (sat) { \
env->vscr |= (1 << VSCR_SAT); \
} \
}
VCT(uxs, cvtsduw, u32)
VCT(sxs, cvtsdsw, s32)
#undef VCT
void helper_vmhaddshs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
ppc_avr_t *b, ppc_avr_t *c)
{
int sat = 0;
int i;
for (i = 0; i < ARRAY_SIZE(r->s16); i++) {
int32_t prod = a->s16[i] * b->s16[i];
int32_t t = (int32_t)c->s16[i] + (prod >> 15);
r->s16[i] = cvtswsh(t, &sat);
}
if (sat) {
env->vscr |= (1 << VSCR_SAT);
}
}
void helper_vmhraddshs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
ppc_avr_t *b, ppc_avr_t *c)
{
int sat = 0;
int i;
for (i = 0; i < ARRAY_SIZE(r->s16); i++) {
int32_t prod = a->s16[i] * b->s16[i] + 0x00004000;
int32_t t = (int32_t)c->s16[i] + (prod >> 15);
r->s16[i] = cvtswsh(t, &sat);
}
if (sat) {
env->vscr |= (1 << VSCR_SAT);
}
}
#define VMINMAX_DO(name, compare, element) \
void helper_v##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
{ \
int i; \
\
for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
if (a->element[i] compare b->element[i]) { \
r->element[i] = b->element[i]; \
} else { \
r->element[i] = a->element[i]; \
} \
} \
}
#define VMINMAX(suffix, element) \
VMINMAX_DO(min##suffix, >, element) \
VMINMAX_DO(max##suffix, <, element)
VMINMAX(sb, s8)
VMINMAX(sh, s16)
VMINMAX(sw, s32)
VMINMAX(sd, s64)
VMINMAX(ub, u8)
VMINMAX(uh, u16)
VMINMAX(uw, u32)
VMINMAX(ud, u64)
#undef VMINMAX_DO
#undef VMINMAX
void helper_vmladduhm(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
{
int i;
for (i = 0; i < ARRAY_SIZE(r->s16); i++) {
int32_t prod = a->s16[i] * b->s16[i];
r->s16[i] = (int16_t) (prod + c->s16[i]);
}
}
#define VMRG_DO(name, element, highp) \
void helper_v##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
{ \
ppc_avr_t result; \
int i; \
size_t n_elems = ARRAY_SIZE(r->element); \
\
for (i = 0; i < n_elems / 2; i++) { \
if (highp) { \
result.element[i*2+HI_IDX] = a->element[i]; \
result.element[i*2+LO_IDX] = b->element[i]; \
} else { \
result.element[n_elems - i * 2 - (1 + HI_IDX)] = \
b->element[n_elems - i - 1]; \
result.element[n_elems - i * 2 - (1 + LO_IDX)] = \
a->element[n_elems - i - 1]; \
} \
} \
*r = result; \
}
#if defined(HOST_WORDS_BIGENDIAN)
#define MRGHI 0
#define MRGLO 1
#else
#define MRGHI 1
#define MRGLO 0
#endif
#define VMRG(suffix, element) \
VMRG_DO(mrgl##suffix, element, MRGHI) \
VMRG_DO(mrgh##suffix, element, MRGLO)
VMRG(b, u8)
VMRG(h, u16)
VMRG(w, u32)
#undef VMRG_DO
#undef VMRG
#undef MRGHI
#undef MRGLO
void helper_vmsummbm(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
ppc_avr_t *b, ppc_avr_t *c)
{
int32_t prod[16];
int i;
for (i = 0; i < ARRAY_SIZE(r->s8); i++) {
prod[i] = (int32_t)a->s8[i] * b->u8[i];
}
VECTOR_FOR_INORDER_I(i, s32) {
r->s32[i] = c->s32[i] + prod[4 * i] + prod[4 * i + 1] +
prod[4 * i + 2] + prod[4 * i + 3];
}
}
void helper_vmsumshm(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
ppc_avr_t *b, ppc_avr_t *c)
{
int32_t prod[8];
int i;
for (i = 0; i < ARRAY_SIZE(r->s16); i++) {
prod[i] = a->s16[i] * b->s16[i];
}
VECTOR_FOR_INORDER_I(i, s32) {
r->s32[i] = c->s32[i] + prod[2 * i] + prod[2 * i + 1];
}
}