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unicorn/qemu/target/arm/translate-neon.inc.c
Peter Maydell b1b0a41507 target/arm: Make A32/T32 use new fpstatus_ptr() API 
Make A32/T32 code use the new fpstatus_ptr() API:
get_fpstatus_ptr(0) -> fpstatus_ptr(FPST_FPCR)
get_fpstatus_ptr(1) -> fpstatus_ptr(FPST_STD)

Backports a84d1d1316726704edd2617b2c30c921d98a8137
2021-02-26 11:55:55 -05:00

4217 lines
127 KiB
C
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/*
* ARM translation: AArch32 Neon instructions
*
* Copyright (c) 2003 Fabrice Bellard
* Copyright (c) 2005-2007 CodeSourcery
* Copyright (c) 2007 OpenedHand, Ltd.
* Copyright (c) 2020 Linaro, Ltd.
*
* 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/>.
*/
/*
* This file is intended to be included from translate.c; it uses
* some macros and definitions provided by that file.
* It might be possible to convert it to a standalone .c file eventually.
*/
static inline int plus1(DisasContext *s, int x)
{
return x + 1;
}
static inline int rsub_64(DisasContext *s, int x)
{
return 64 - x;
}
static inline int rsub_32(DisasContext *s, int x)
{
return 32 - x;
}
static inline int rsub_16(DisasContext *s, int x)
{
return 16 - x;
}
static inline int rsub_8(DisasContext *s, int x)
{
return 8 - x;
}
/* Include the generated Neon decoder */
#include "decode-neon-dp.inc.c"
#include "decode-neon-ls.inc.c"
#include "decode-neon-shared.inc.c"
/* Return the offset of a 2**SIZE piece of a NEON register, at index ELE,
* where 0 is the least significant end of the register.
*/
static inline long
neon_element_offset(int reg, int element, MemOp size)
{
int element_size = 1 << size;
int ofs = element * element_size;
#ifdef HOST_WORDS_BIGENDIAN
/* Calculate the offset assuming fully little-endian,
* then XOR to account for the order of the 8-byte units.
*/
if (element_size < 8) {
ofs ^= 8 - element_size;
}
#endif
return neon_reg_offset(reg, 0) + ofs;
}
static void neon_load_element(DisasContext *s, TCGv_i32 var, int reg, int ele, MemOp mop)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
long offset = neon_element_offset(reg, ele, mop & MO_SIZE);
switch (mop) {
case MO_UB:
tcg_gen_ld8u_i32(tcg_ctx, var, tcg_ctx->cpu_env, offset);
break;
case MO_UW:
tcg_gen_ld16u_i32(tcg_ctx, var, tcg_ctx->cpu_env, offset);
break;
case MO_UL:
tcg_gen_ld_i32(tcg_ctx, var, tcg_ctx->cpu_env, offset);
break;
default:
g_assert_not_reached();
}
}
static void neon_load_element64(DisasContext *s, TCGv_i64 var, int reg, int ele, MemOp mop)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
long offset = neon_element_offset(reg, ele, mop & MO_SIZE);
switch (mop) {
case MO_UB:
tcg_gen_ld8u_i64(tcg_ctx, var, tcg_ctx->cpu_env, offset);
break;
case MO_UW:
tcg_gen_ld16u_i64(tcg_ctx, var, tcg_ctx->cpu_env, offset);
break;
case MO_UL:
tcg_gen_ld32u_i64(tcg_ctx, var, tcg_ctx->cpu_env, offset);
break;
case MO_Q:
tcg_gen_ld_i64(tcg_ctx, var, tcg_ctx->cpu_env, offset);
break;
default:
g_assert_not_reached();
}
}
static void neon_store_element(DisasContext *s, int reg, int ele, MemOp size, TCGv_i32 var)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
long offset = neon_element_offset(reg, ele, size);
switch (size) {
case MO_8:
tcg_gen_st8_i32(tcg_ctx, var, tcg_ctx->cpu_env, offset);
break;
case MO_16:
tcg_gen_st16_i32(tcg_ctx, var, tcg_ctx->cpu_env, offset);
break;
case MO_32:
tcg_gen_st_i32(tcg_ctx, var, tcg_ctx->cpu_env, offset);
break;
default:
g_assert_not_reached();
}
}
static void neon_store_element64(DisasContext *s, int reg, int ele, MemOp size, TCGv_i64 var)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
long offset = neon_element_offset(reg, ele, size);
switch (size) {
case MO_8:
tcg_gen_st8_i64(tcg_ctx, var, tcg_ctx->cpu_env, offset);
break;
case MO_16:
tcg_gen_st16_i64(tcg_ctx, var, tcg_ctx->cpu_env, offset);
break;
case MO_32:
tcg_gen_st32_i64(tcg_ctx, var, tcg_ctx->cpu_env, offset);
break;
case MO_64:
tcg_gen_st_i64(tcg_ctx, var, tcg_ctx->cpu_env, offset);
break;
default:
g_assert_not_reached();
}
}
static bool trans_VCMLA(DisasContext *s, arg_VCMLA *a)
{
int opr_sz;
TCGv_ptr fpst;
gen_helper_gvec_3_ptr *fn_gvec_ptr;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!dc_isar_feature(aa32_vcma, s)
|| (!a->size && !dc_isar_feature(aa32_fp16_arith, s))) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if ((a->vn | a->vm | a->vd) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
opr_sz = (1 + a->q) * 8;
fpst = fpstatus_ptr(tcg_ctx, FPST_STD);
fn_gvec_ptr = a->size ? gen_helper_gvec_fcmlas : gen_helper_gvec_fcmlah;
tcg_gen_gvec_3_ptr(tcg_ctx, vfp_reg_offset(1, a->vd),
vfp_reg_offset(1, a->vn),
vfp_reg_offset(1, a->vm),
fpst, opr_sz, opr_sz, a->rot,
fn_gvec_ptr);
tcg_temp_free_ptr(tcg_ctx, fpst);
return true;
}
static bool trans_VCADD(DisasContext *s, arg_VCADD *a)
{
int opr_sz;
TCGv_ptr fpst;
gen_helper_gvec_3_ptr *fn_gvec_ptr;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!dc_isar_feature(aa32_vcma, s)
|| (!a->size && !dc_isar_feature(aa32_fp16_arith, s))) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if ((a->vn | a->vm | a->vd) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
opr_sz = (1 + a->q) * 8;
fpst = fpstatus_ptr(tcg_ctx, FPST_STD);
fn_gvec_ptr = a->size ? gen_helper_gvec_fcadds : gen_helper_gvec_fcaddh;
tcg_gen_gvec_3_ptr(tcg_ctx, vfp_reg_offset(1, a->vd),
vfp_reg_offset(1, a->vn),
vfp_reg_offset(1, a->vm),
fpst, opr_sz, opr_sz, a->rot,
fn_gvec_ptr);
tcg_temp_free_ptr(tcg_ctx, fpst);
return true;
}
static bool trans_VDOT(DisasContext *s, arg_VDOT *a)
{
int opr_sz;
gen_helper_gvec_3 *fn_gvec;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!dc_isar_feature(aa32_dp, s)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if ((a->vn | a->vm | a->vd) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
opr_sz = (1 + a->q) * 8;
fn_gvec = a->u ? gen_helper_gvec_udot_b : gen_helper_gvec_sdot_b;
tcg_gen_gvec_3_ool(tcg_ctx, vfp_reg_offset(1, a->vd),
vfp_reg_offset(1, a->vn),
vfp_reg_offset(1, a->vm),
opr_sz, opr_sz, 0, fn_gvec);
return true;
}
static bool trans_VFML(DisasContext *s, arg_VFML *a)
{
int opr_sz;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!dc_isar_feature(aa32_fhm, s)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
(a->vd & 0x10)) {
return false;
}
if (a->vd & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
opr_sz = (1 + a->q) * 8;
tcg_gen_gvec_3_ptr(tcg_ctx, vfp_reg_offset(1, a->vd),
vfp_reg_offset(a->q, a->vn),
vfp_reg_offset(a->q, a->vm),
tcg_ctx->cpu_env, opr_sz, opr_sz, a->s, /* is_2 == 0 */
gen_helper_gvec_fmlal_a32);
return true;
}
static bool trans_VCMLA_scalar(DisasContext *s, arg_VCMLA_scalar *a)
{
gen_helper_gvec_3_ptr *fn_gvec_ptr;
int opr_sz;
TCGv_ptr fpst;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!dc_isar_feature(aa32_vcma, s)) {
return false;
}
if (a->size == 0 && !dc_isar_feature(aa32_fp16_arith, s)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if ((a->vd | a->vn) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
fn_gvec_ptr = (a->size ? gen_helper_gvec_fcmlas_idx
: gen_helper_gvec_fcmlah_idx);
opr_sz = (1 + a->q) * 8;
fpst = fpstatus_ptr(tcg_ctx, FPST_STD);
tcg_gen_gvec_3_ptr(tcg_ctx, vfp_reg_offset(1, a->vd),
vfp_reg_offset(1, a->vn),
vfp_reg_offset(1, a->vm),
fpst, opr_sz, opr_sz,
(a->index << 2) | a->rot, fn_gvec_ptr);
tcg_temp_free_ptr(tcg_ctx, fpst);
return true;
}
static bool trans_VDOT_scalar(DisasContext *s, arg_VDOT_scalar *a)
{
gen_helper_gvec_3 *fn_gvec;
int opr_sz;
TCGv_ptr fpst;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!dc_isar_feature(aa32_dp, s)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn) & 0x10)) {
return false;
}
if ((a->vd | a->vn) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
fn_gvec = a->u ? gen_helper_gvec_udot_idx_b : gen_helper_gvec_sdot_idx_b;
opr_sz = (1 + a->q) * 8;
fpst = fpstatus_ptr(tcg_ctx, FPST_STD);
tcg_gen_gvec_3_ool(tcg_ctx, vfp_reg_offset(1, a->vd),
vfp_reg_offset(1, a->vn),
vfp_reg_offset(1, a->rm),
opr_sz, opr_sz, a->index, fn_gvec);
tcg_temp_free_ptr(tcg_ctx, fpst);
return true;
}
static bool trans_VFML_scalar(DisasContext *s, arg_VFML_scalar *a)
{
int opr_sz;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!dc_isar_feature(aa32_fhm, s)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd & 0x10) || (a->q && (a->vn & 0x10)))) {
return false;
}
if (a->vd & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
opr_sz = (1 + a->q) * 8;
tcg_gen_gvec_3_ptr(tcg_ctx, vfp_reg_offset(1, a->vd),
vfp_reg_offset(a->q, a->vn),
vfp_reg_offset(a->q, a->rm),
tcg_ctx->cpu_env, opr_sz, opr_sz,
(a->index << 2) | a->s, /* is_2 == 0 */
gen_helper_gvec_fmlal_idx_a32);
return true;
}
static struct {
int nregs;
int interleave;
int spacing;
} const neon_ls_element_type[11] = {
{1, 4, 1},
{1, 4, 2},
{4, 1, 1},
{2, 2, 2},
{1, 3, 1},
{1, 3, 2},
{3, 1, 1},
{1, 1, 1},
{1, 2, 1},
{1, 2, 2},
{2, 1, 1}
};
static void gen_neon_ldst_base_update(DisasContext *s, int rm, int rn,
int stride)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (rm != 15) {
TCGv_i32 base;
base = load_reg(s, rn);
if (rm == 13) {
tcg_gen_addi_i32(tcg_ctx, base, base, stride);
} else {
TCGv_i32 index;
index = load_reg(s, rm);
tcg_gen_add_i32(tcg_ctx, base, base, index);
tcg_temp_free_i32(tcg_ctx, index);
}
store_reg(s, rn, base);
}
}
static bool trans_VLDST_multiple(DisasContext *s, arg_VLDST_multiple *a)
{
/* Neon load/store multiple structures */
int nregs, interleave, spacing, reg, n;
MemOp endian = s->be_data;
int mmu_idx = get_mem_index(s);
int size = a->size;
TCGv_i64 tmp64;
TCGv_i32 addr, tmp;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist */
if (!dc_isar_feature(aa32_simd_r32, s) && (a->vd & 0x10)) {
return false;
}
if (a->itype > 10) {
return false;
}
/* Catch UNDEF cases for bad values of align field */
switch (a->itype & 0xc) {
case 4:
if (a->align >= 2) {
return false;
}
break;
case 8:
if (a->align == 3) {
return false;
}
break;
default:
break;
}
nregs = neon_ls_element_type[a->itype].nregs;
interleave = neon_ls_element_type[a->itype].interleave;
spacing = neon_ls_element_type[a->itype].spacing;
if (size == 3 && (interleave | spacing) != 1) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
/* For our purposes, bytes are always little-endian. */
if (size == 0) {
endian = MO_LE;
}
/*
* Consecutive little-endian elements from a single register
* can be promoted to a larger little-endian operation.
*/
if (interleave == 1 && endian == MO_LE) {
size = 3;
}
tmp64 = tcg_temp_new_i64(tcg_ctx);
addr = tcg_temp_new_i32(tcg_ctx);
tmp = tcg_const_i32(tcg_ctx, 1 << size);
load_reg_var(s, addr, a->rn);
for (reg = 0; reg < nregs; reg++) {
for (n = 0; n < 8 >> size; n++) {
int xs;
for (xs = 0; xs < interleave; xs++) {
int tt = a->vd + reg + spacing * xs;
if (a->l) {
gen_aa32_ld_i64(s, tmp64, addr, mmu_idx, endian | size);
neon_store_element64(s, tt, n, size, tmp64);
} else {
neon_load_element64(s, tmp64, tt, n, size);
gen_aa32_st_i64(s, tmp64, addr, mmu_idx, endian | size);
}
tcg_gen_add_i32(tcg_ctx, addr, addr, tmp);
}
}
}
tcg_temp_free_i32(tcg_ctx, addr);
tcg_temp_free_i32(tcg_ctx, tmp);
tcg_temp_free_i64(tcg_ctx, tmp64);
gen_neon_ldst_base_update(s, a->rm, a->rn, nregs * interleave * 8);
return true;
}
static bool trans_VLD_all_lanes(DisasContext *s, arg_VLD_all_lanes *a)
{
/* Neon load single structure to all lanes */
int reg, stride, vec_size;
int vd = a->vd;
int size = a->size;
int nregs = a->n + 1;
TCGv_i32 addr, tmp;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist */
if (!dc_isar_feature(aa32_simd_r32, s) && (a->vd & 0x10)) {
return false;
}
if (size == 3) {
if (nregs != 4 || a->a == 0) {
return false;
}
/* For VLD4 size == 3 a == 1 means 32 bits at 16 byte alignment */
size = 2;
}
if (nregs == 1 && a->a == 1 && size == 0) {
return false;
}
if (nregs == 3 && a->a == 1) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
/*
* VLD1 to all lanes: T bit indicates how many Dregs to write.
* VLD2/3/4 to all lanes: T bit indicates register stride.
*/
stride = a->t ? 2 : 1;
vec_size = nregs == 1 ? stride * 8 : 8;
tmp = tcg_temp_new_i32(tcg_ctx);
addr = tcg_temp_new_i32(tcg_ctx);
load_reg_var(s, addr, a->rn);
for (reg = 0; reg < nregs; reg++) {
gen_aa32_ld_i32(s, tmp, addr, get_mem_index(s),
s->be_data | size);
if ((vd & 1) && vec_size == 16) {
/*
* We cannot write 16 bytes at once because the
* destination is unaligned.
*/
tcg_gen_gvec_dup_i32(tcg_ctx, size, neon_reg_offset(vd, 0),
8, 8, tmp);
tcg_gen_gvec_mov(tcg_ctx, 0, neon_reg_offset(vd + 1, 0),
neon_reg_offset(vd, 0), 8, 8);
} else {
tcg_gen_gvec_dup_i32(tcg_ctx, size, neon_reg_offset(vd, 0),
vec_size, vec_size, tmp);
}
tcg_gen_addi_i32(tcg_ctx, addr, addr, 1 << size);
vd += stride;
}
tcg_temp_free_i32(tcg_ctx, tmp);
tcg_temp_free_i32(tcg_ctx, addr);
gen_neon_ldst_base_update(s, a->rm, a->rn, (1 << size) * nregs);
return true;
}
static bool trans_VLDST_single(DisasContext *s, arg_VLDST_single *a)
{
/* Neon load/store single structure to one lane */
int reg;
int nregs = a->n + 1;
int vd = a->vd;
TCGv_i32 addr, tmp;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist */
if (!dc_isar_feature(aa32_simd_r32, s) && (a->vd & 0x10)) {
return false;
}
/* Catch the UNDEF cases. This is unavoidably a bit messy. */
switch (nregs) {
case 1:
if (((a->align & (1 << a->size)) != 0) ||
(a->size == 2 && ((a->align & 3) == 1 || (a->align & 3) == 2))) {
return false;
}
break;
case 3:
if ((a->align & 1) != 0) {
return false;
}
/* fall through */
case 2:
if (a->size == 2 && (a->align & 2) != 0) {
return false;
}
break;
case 4:
if ((a->size == 2) && ((a->align & 3) == 3)) {
return false;
}
break;
default:
abort();
}
if ((vd + a->stride * (nregs - 1)) > 31) {
/*
* Attempts to write off the end of the register file are
* UNPREDICTABLE; we choose to UNDEF because otherwise we would
* access off the end of the array that holds the register data.
*/
return false;
}
if (!vfp_access_check(s)) {
return true;
}
tmp = tcg_temp_new_i32(tcg_ctx);
addr = tcg_temp_new_i32(tcg_ctx);
load_reg_var(s, addr, a->rn);
/*
* TODO: if we implemented alignment exceptions, we should check
* addr against the alignment encoded in a->align here.
*/
for (reg = 0; reg < nregs; reg++) {
if (a->l) {
gen_aa32_ld_i32(s, tmp, addr, get_mem_index(s),
s->be_data | a->size);
neon_store_element(s, vd, a->reg_idx, a->size, tmp);
} else { /* Store */
neon_load_element(s, tmp, vd, a->reg_idx, a->size);
gen_aa32_st_i32(s, tmp, addr, get_mem_index(s),
s->be_data | a->size);
}
vd += a->stride;
tcg_gen_addi_i32(tcg_ctx, addr, addr, 1 << a->size);
}
tcg_temp_free_i32(tcg_ctx, addr);
tcg_temp_free_i32(tcg_ctx, tmp);
gen_neon_ldst_base_update(s, a->rm, a->rn, (1 << a->size) * nregs);
return true;
}
static bool do_3same(DisasContext *s, arg_3same *a, GVecGen3Fn fn)
{
int vec_size = a->q ? 16 : 8;
int rd_ofs = neon_reg_offset(a->vd, 0);
int rn_ofs = neon_reg_offset(a->vn, 0);
int rm_ofs = neon_reg_offset(a->vm, 0);
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if ((a->vn | a->vm | a->vd) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
fn(tcg_ctx, a->size, rd_ofs, rn_ofs, rm_ofs, vec_size, vec_size);
return true;
}
#define DO_3SAME(INSN, FUNC) \
static bool trans_##INSN##_3s(DisasContext *s, arg_3same *a) \
{ \
return do_3same(s, a, FUNC); \
}
DO_3SAME(VADD, tcg_gen_gvec_add)
DO_3SAME(VSUB, tcg_gen_gvec_sub)
DO_3SAME(VAND, tcg_gen_gvec_and)
DO_3SAME(VBIC, tcg_gen_gvec_andc)
DO_3SAME(VORR, tcg_gen_gvec_or)
DO_3SAME(VORN, tcg_gen_gvec_orc)
DO_3SAME(VEOR, tcg_gen_gvec_xor)
DO_3SAME(VSHL_S, gen_gvec_sshl)
DO_3SAME(VSHL_U, gen_gvec_ushl)
DO_3SAME(VQADD_S, gen_gvec_sqadd_qc)
DO_3SAME(VQADD_U, gen_gvec_uqadd_qc)
DO_3SAME(VQSUB_S, gen_gvec_sqsub_qc)
DO_3SAME(VQSUB_U, gen_gvec_uqsub_qc)
/* These insns are all gvec_bitsel but with the inputs in various orders. */
#define DO_3SAME_BITSEL(INSN, O1, O2, O3) \
static void gen_##INSN##_3s(TCGContext *s, unsigned vece, uint32_t rd_ofs, \
uint32_t rn_ofs, uint32_t rm_ofs, \
uint32_t oprsz, uint32_t maxsz) \
{ \
tcg_gen_gvec_bitsel(s, vece, rd_ofs, O1, O2, O3, oprsz, maxsz); \
} \
DO_3SAME(INSN, gen_##INSN##_3s)
DO_3SAME_BITSEL(VBSL, rd_ofs, rn_ofs, rm_ofs)
DO_3SAME_BITSEL(VBIT, rm_ofs, rn_ofs, rd_ofs)
DO_3SAME_BITSEL(VBIF, rm_ofs, rd_ofs, rn_ofs)
#define DO_3SAME_NO_SZ_3(INSN, FUNC) \
static bool trans_##INSN##_3s(DisasContext *s, arg_3same *a) \
{ \
if (a->size == 3) { \
return false; \
} \
return do_3same(s, a, FUNC); \
}
DO_3SAME_NO_SZ_3(VMAX_S, tcg_gen_gvec_smax)
DO_3SAME_NO_SZ_3(VMAX_U, tcg_gen_gvec_umax)
DO_3SAME_NO_SZ_3(VMIN_S, tcg_gen_gvec_smin)
DO_3SAME_NO_SZ_3(VMIN_U, tcg_gen_gvec_umin)
DO_3SAME_NO_SZ_3(VMUL, tcg_gen_gvec_mul)
DO_3SAME_NO_SZ_3(VMLA, gen_gvec_mla)
DO_3SAME_NO_SZ_3(VMLS, gen_gvec_mls)
DO_3SAME_NO_SZ_3(VTST, gen_gvec_cmtst)
DO_3SAME_NO_SZ_3(VABD_S, gen_gvec_sabd)
DO_3SAME_NO_SZ_3(VABA_S, gen_gvec_saba)
DO_3SAME_NO_SZ_3(VABD_U, gen_gvec_uabd)
DO_3SAME_NO_SZ_3(VABA_U, gen_gvec_uaba)
#define DO_3SAME_CMP(INSN, COND) \
static void gen_##INSN##_3s(TCGContext *s, unsigned vece, uint32_t rd_ofs, \
uint32_t rn_ofs, uint32_t rm_ofs, \
uint32_t oprsz, uint32_t maxsz) \
{ \
tcg_gen_gvec_cmp(s, COND, vece, rd_ofs, rn_ofs, rm_ofs, oprsz, maxsz); \
} \
DO_3SAME_NO_SZ_3(INSN, gen_##INSN##_3s)
DO_3SAME_CMP(VCGT_S, TCG_COND_GT)
DO_3SAME_CMP(VCGT_U, TCG_COND_GTU)
DO_3SAME_CMP(VCGE_S, TCG_COND_GE)
DO_3SAME_CMP(VCGE_U, TCG_COND_GEU)
DO_3SAME_CMP(VCEQ, TCG_COND_EQ)
#define WRAP_OOL_FN(WRAPNAME, FUNC) \
static void WRAPNAME(TCGContext *tcg_ctx, unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, \
uint32_t rm_ofs, uint32_t oprsz, uint32_t maxsz) \
{ \
tcg_gen_gvec_3_ool(tcg_ctx, rd_ofs, rn_ofs, rm_ofs, oprsz, maxsz, 0, FUNC); \
}
WRAP_OOL_FN(gen_VMUL_p_3s, gen_helper_gvec_pmul_b)
static bool trans_VMUL_p_3s(DisasContext *s, arg_3same *a)
{
if (a->size != 0) {
return false;
}
return do_3same(s, a, gen_VMUL_p_3s);
}
#define DO_VQRDMLAH(INSN, FUNC) \
static bool trans_##INSN##_3s(DisasContext *s, arg_3same *a) \
{ \
if (!dc_isar_feature(aa32_rdm, s)) { \
return false; \
} \
if (a->size != 1 && a->size != 2) { \
return false; \
} \
return do_3same(s, a, FUNC); \
}
DO_VQRDMLAH(VQRDMLAH, gen_gvec_sqrdmlah_qc)
DO_VQRDMLAH(VQRDMLSH, gen_gvec_sqrdmlsh_qc)
#define DO_SHA1(NAME, FUNC) \
WRAP_OOL_FN(gen_##NAME##_3s, FUNC) \
static bool trans_##NAME##_3s(DisasContext *s, arg_3same *a) \
{ \
if (!dc_isar_feature(aa32_sha1, s)) { \
return false; \
} \
return do_3same(s, a, gen_##NAME##_3s); \
}
DO_SHA1(SHA1C, gen_helper_crypto_sha1c)
DO_SHA1(SHA1P, gen_helper_crypto_sha1p)
DO_SHA1(SHA1M, gen_helper_crypto_sha1m)
DO_SHA1(SHA1SU0, gen_helper_crypto_sha1su0)
#define DO_SHA2(NAME, FUNC) \
WRAP_OOL_FN(gen_##NAME##_3s, FUNC) \
static bool trans_##NAME##_3s(DisasContext *s, arg_3same *a) \
{ \
if (!dc_isar_feature(aa32_sha2, s)) { \
return false; \
} \
return do_3same(s, a, gen_##NAME##_3s); \
}
DO_SHA2(SHA256H, gen_helper_crypto_sha256h)
DO_SHA2(SHA256H2, gen_helper_crypto_sha256h2)
DO_SHA2(SHA256SU1, gen_helper_crypto_sha256su1)
#define DO_3SAME_64(INSN, FUNC) \
static void gen_##INSN##_3s(TCGContext *s, unsigned vece, uint32_t rd_ofs, \
uint32_t rn_ofs, uint32_t rm_ofs, \
uint32_t oprsz, uint32_t maxsz) \
{ \
static const GVecGen3 op = { .fni8 = FUNC }; \
tcg_gen_gvec_3(s, rd_ofs, rn_ofs, rm_ofs, oprsz, maxsz, &op); \
} \
DO_3SAME(INSN, gen_##INSN##_3s)
#define DO_3SAME_64_ENV(INSN, FUNC) \
static void gen_##INSN##_elt(TCGContext *s, TCGv_i64 d, TCGv_i64 n, TCGv_i64 m) \
{ \
FUNC(s, d, s->cpu_env, n, m); \
} \
DO_3SAME_64(INSN, gen_##INSN##_elt)
DO_3SAME_64(VRSHL_S64, gen_helper_neon_rshl_s64)
DO_3SAME_64(VRSHL_U64, gen_helper_neon_rshl_u64)
DO_3SAME_64_ENV(VQSHL_S64, gen_helper_neon_qshl_s64)
DO_3SAME_64_ENV(VQSHL_U64, gen_helper_neon_qshl_u64)
DO_3SAME_64_ENV(VQRSHL_S64, gen_helper_neon_qrshl_s64)
DO_3SAME_64_ENV(VQRSHL_U64, gen_helper_neon_qrshl_u64)
#define DO_3SAME_32(INSN, FUNC) \
static void gen_##INSN##_3s(TCGContext *s, unsigned vece, uint32_t rd_ofs, \
uint32_t rn_ofs, uint32_t rm_ofs, \
uint32_t oprsz, uint32_t maxsz) \
{ \
static const GVecGen3 ops[4] = { \
{ .fni4 = gen_helper_neon_##FUNC##8 }, \
{ .fni4 = gen_helper_neon_##FUNC##16 }, \
{ .fni4 = gen_helper_neon_##FUNC##32 }, \
{ 0 }, \
}; \
tcg_gen_gvec_3(s, rd_ofs, rn_ofs, rm_ofs, oprsz, maxsz, &ops[vece]); \
} \
static bool trans_##INSN##_3s(DisasContext *s, arg_3same *a) \
{ \
if (a->size > 2) { \
return false; \
} \
return do_3same(s, a, gen_##INSN##_3s); \
}
/*
* Some helper functions need to be passed the cpu_env. In order
* to use those with the gvec APIs like tcg_gen_gvec_3() we need
* to create wrapper functions whose prototype is a NeonGenTwoOpFn()
* and which call a NeonGenTwoOpEnvFn().
*/
#define WRAP_ENV_FN(WRAPNAME, FUNC) \
static void WRAPNAME(TCGContext *s, TCGv_i32 d, TCGv_i32 n, TCGv_i32 m) \
{ \
FUNC(s, d, s->cpu_env, n, m); \
}
#define DO_3SAME_32_ENV(INSN, FUNC) \
WRAP_ENV_FN(gen_##INSN##_tramp8, gen_helper_neon_##FUNC##8); \
WRAP_ENV_FN(gen_##INSN##_tramp16, gen_helper_neon_##FUNC##16); \
WRAP_ENV_FN(gen_##INSN##_tramp32, gen_helper_neon_##FUNC##32); \
static void gen_##INSN##_3s(TCGContext *s, unsigned vece, uint32_t rd_ofs, \
uint32_t rn_ofs, uint32_t rm_ofs, \
uint32_t oprsz, uint32_t maxsz) \
{ \
static const GVecGen3 ops[4] = { \
{ .fni4 = gen_##INSN##_tramp8 }, \
{ .fni4 = gen_##INSN##_tramp16 }, \
{ .fni4 = gen_##INSN##_tramp32 }, \
{ 0 }, \
}; \
tcg_gen_gvec_3(s, rd_ofs, rn_ofs, rm_ofs, oprsz, maxsz, &ops[vece]); \
} \
static bool trans_##INSN##_3s(DisasContext *s, arg_3same *a) \
{ \
if (a->size > 2) { \
return false; \
} \
return do_3same(s, a, gen_##INSN##_3s); \
}
DO_3SAME_32(VHADD_S, hadd_s)
DO_3SAME_32(VHADD_U, hadd_u)
DO_3SAME_32(VHSUB_S, hsub_s)
DO_3SAME_32(VHSUB_U, hsub_u)
DO_3SAME_32(VRHADD_S, rhadd_s)
DO_3SAME_32(VRHADD_U, rhadd_u)
DO_3SAME_32(VRSHL_S, rshl_s)
DO_3SAME_32(VRSHL_U, rshl_u)
DO_3SAME_32_ENV(VQSHL_S, qshl_s)
DO_3SAME_32_ENV(VQSHL_U, qshl_u)
DO_3SAME_32_ENV(VQRSHL_S, qrshl_s)
DO_3SAME_32_ENV(VQRSHL_U, qrshl_u)
static bool do_3same_pair(DisasContext *s, arg_3same *a, NeonGenTwoOpFn *fn)
{
/* Operations handled pairwise 32 bits at a time */
TCGv_i32 tmp, tmp2, tmp3;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if (a->size == 3) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
assert(a->q == 0); /* enforced by decode patterns */
/*
* Note that we have to be careful not to clobber the source operands
* in the "vm == vd" case by storing the result of the first pass too
* early. Since Q is 0 there are always just two passes, so instead
* of a complicated loop over each pass we just unroll.
*/
tmp = neon_load_reg(s, a->vn, 0);
tmp2 = neon_load_reg(s, a->vn, 1);
fn(tcg_ctx, tmp, tmp, tmp2);
tcg_temp_free_i32(tcg_ctx, tmp2);
tmp3 = neon_load_reg(s, a->vm, 0);
tmp2 = neon_load_reg(s, a->vm, 1);
fn(tcg_ctx, tmp3, tmp3, tmp2);
tcg_temp_free_i32(tcg_ctx, tmp2);
neon_store_reg(s, a->vd, 0, tmp);
neon_store_reg(s, a->vd, 1, tmp3);
return true;
}
#define DO_3SAME_PAIR(INSN, func) \
static bool trans_##INSN##_3s(DisasContext *s, arg_3same *a) \
{ \
static NeonGenTwoOpFn * const fns[] = { \
gen_helper_neon_##func##8, \
gen_helper_neon_##func##16, \
gen_helper_neon_##func##32, \
}; \
if (a->size > 2) { \
return false; \
} \
return do_3same_pair(s, a, fns[a->size]); \
}
/* 32-bit pairwise ops end up the same as the elementwise versions. */
#define gen_helper_neon_pmax_s32 tcg_gen_smax_i32
#define gen_helper_neon_pmax_u32 tcg_gen_umax_i32
#define gen_helper_neon_pmin_s32 tcg_gen_smin_i32
#define gen_helper_neon_pmin_u32 tcg_gen_umin_i32
#define gen_helper_neon_padd_u32 tcg_gen_add_i32
DO_3SAME_PAIR(VPMAX_S, pmax_s)
DO_3SAME_PAIR(VPMIN_S, pmin_s)
DO_3SAME_PAIR(VPMAX_U, pmax_u)
DO_3SAME_PAIR(VPMIN_U, pmin_u)
DO_3SAME_PAIR(VPADD, padd_u)
#define DO_3SAME_VQDMULH(INSN, FUNC) \
WRAP_ENV_FN(gen_##INSN##_tramp16, gen_helper_neon_##FUNC##_s16); \
WRAP_ENV_FN(gen_##INSN##_tramp32, gen_helper_neon_##FUNC##_s32); \
static void gen_##INSN##_3s(TCGContext *s, unsigned vece, uint32_t rd_ofs, \
uint32_t rn_ofs, uint32_t rm_ofs, \
uint32_t oprsz, uint32_t maxsz) \
{ \
static const GVecGen3 ops[2] = { \
{ .fni4 = gen_##INSN##_tramp16 }, \
{ .fni4 = gen_##INSN##_tramp32 }, \
}; \
tcg_gen_gvec_3(s, rd_ofs, rn_ofs, rm_ofs, oprsz, maxsz, &ops[vece - 1]); \
} \
static bool trans_##INSN##_3s(DisasContext *s, arg_3same *a) \
{ \
if (a->size != 1 && a->size != 2) { \
return false; \
} \
return do_3same(s, a, gen_##INSN##_3s); \
}
DO_3SAME_VQDMULH(VQDMULH, qdmulh)
DO_3SAME_VQDMULH(VQRDMULH, qrdmulh)
static bool do_3same_fp(DisasContext *s, arg_3same *a, VFPGen3OpSPFn *fn,
bool reads_vd)
{
/*
* FP operations handled elementwise 32 bits at a time.
* If reads_vd is true then the old value of Vd will be
* loaded before calling the callback function. This is
* used for multiply-accumulate type operations.
*/
TCGv_i32 tmp, tmp2;
int pass;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if ((a->vn | a->vm | a->vd) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
TCGv_ptr fpstatus = fpstatus_ptr(tcg_ctx, FPST_STD);
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
tmp = neon_load_reg(s, a->vn, pass);
tmp2 = neon_load_reg(s, a->vm, pass);
if (reads_vd) {
TCGv_i32 tmp_rd = neon_load_reg(s, a->vd, pass);
fn(tcg_ctx, tmp_rd, tmp, tmp2, fpstatus);
neon_store_reg(s, a->vd, pass, tmp_rd);
tcg_temp_free_i32(tcg_ctx, tmp);
} else {
fn(tcg_ctx, tmp, tmp, tmp2, fpstatus);
neon_store_reg(s, a->vd, pass, tmp);
}
tcg_temp_free_i32(tcg_ctx, tmp2);
}
tcg_temp_free_ptr(tcg_ctx, fpstatus);
return true;
}
/*
* For all the functions using this macro, size == 1 means fp16,
* which is an architecture extension we don't implement yet.
*/
#define DO_3S_FP_GVEC(INSN,FUNC) \
static void gen_##INSN##_3s(TCGContext *s, unsigned vece, uint32_t rd_ofs, \
uint32_t rn_ofs, uint32_t rm_ofs, \
uint32_t oprsz, uint32_t maxsz) \
{ \
TCGv_ptr fpst = fpstatus_ptr(s, FPST_STD); \
tcg_gen_gvec_3_ptr(s, rd_ofs, rn_ofs, rm_ofs, fpst, \
oprsz, maxsz, 0, FUNC); \
tcg_temp_free_ptr(s, fpst); \
} \
static bool trans_##INSN##_fp_3s(DisasContext *s, arg_3same *a) \
{ \
if (a->size != 0) { \
/* TODO fp16 support */ \
return false; \
} \
return do_3same(s, a, gen_##INSN##_3s); \
}
DO_3S_FP_GVEC(VADD, gen_helper_gvec_fadd_s)
DO_3S_FP_GVEC(VSUB, gen_helper_gvec_fsub_s)
DO_3S_FP_GVEC(VABD, gen_helper_gvec_fabd_s)
DO_3S_FP_GVEC(VMUL, gen_helper_gvec_fmul_s)
/*
* For all the functions using this macro, size == 1 means fp16,
* which is an architecture extension we don't implement yet.
*/
#define DO_3S_FP(INSN,FUNC,READS_VD) \
static bool trans_##INSN##_fp_3s(DisasContext *s, arg_3same *a) \
{ \
if (a->size != 0) { \
/* TODO fp16 support */ \
return false; \
} \
return do_3same_fp(s, a, FUNC, READS_VD); \
}
DO_3S_FP(VCEQ, gen_helper_neon_ceq_f32, false)
DO_3S_FP(VCGE, gen_helper_neon_cge_f32, false)
DO_3S_FP(VCGT, gen_helper_neon_cgt_f32, false)
DO_3S_FP(VACGE, gen_helper_neon_acge_f32, false)
DO_3S_FP(VACGT, gen_helper_neon_acgt_f32, false)
DO_3S_FP(VMAX, gen_helper_vfp_maxs, false)
DO_3S_FP(VMIN, gen_helper_vfp_mins, false)
static void gen_VMLA_fp_3s(TCGContext *s, TCGv_i32 vd, TCGv_i32 vn, TCGv_i32 vm,
TCGv_ptr fpstatus)
{
gen_helper_vfp_muls(s, vn, vn, vm, fpstatus);
gen_helper_vfp_adds(s, vd, vd, vn, fpstatus);
}
static void gen_VMLS_fp_3s(TCGContext *s, TCGv_i32 vd, TCGv_i32 vn, TCGv_i32 vm,
TCGv_ptr fpstatus)
{
gen_helper_vfp_muls(s, vn, vn, vm, fpstatus);
gen_helper_vfp_subs(s, vd, vd, vn, fpstatus);
}
DO_3S_FP(VMLA, gen_VMLA_fp_3s, true)
DO_3S_FP(VMLS, gen_VMLS_fp_3s, true)
static bool trans_VMAXNM_fp_3s(DisasContext *s, arg_3same *a)
{
if (!arm_dc_feature(s, ARM_FEATURE_V8)) {
return false;
}
if (a->size != 0) {
/* TODO fp16 support */
return false;
}
return do_3same_fp(s, a, gen_helper_vfp_maxnums, false);
}
static bool trans_VMINNM_fp_3s(DisasContext *s, arg_3same *a)
{
if (!arm_dc_feature(s, ARM_FEATURE_V8)) {
return false;
}
if (a->size != 0) {
/* TODO fp16 support */
return false;
}
return do_3same_fp(s, a, gen_helper_vfp_minnums, false);
}
WRAP_ENV_FN(gen_VRECPS_tramp, gen_helper_recps_f32)
static void gen_VRECPS_fp_3s(TCGContext *s, unsigned vece, uint32_t rd_ofs,
uint32_t rn_ofs, uint32_t rm_ofs,
uint32_t oprsz, uint32_t maxsz)
{
static const GVecGen3 ops = { .fni4 = gen_VRECPS_tramp };
tcg_gen_gvec_3(s, rd_ofs, rn_ofs, rm_ofs, oprsz, maxsz, &ops);
}
static bool trans_VRECPS_fp_3s(DisasContext *s, arg_3same *a)
{
if (a->size != 0) {
/* TODO fp16 support */
return false;
}
return do_3same(s, a, gen_VRECPS_fp_3s);
}
WRAP_ENV_FN(gen_VRSQRTS_tramp, gen_helper_rsqrts_f32)
static void gen_VRSQRTS_fp_3s(TCGContext *s, unsigned vece, uint32_t rd_ofs,
uint32_t rn_ofs, uint32_t rm_ofs,
uint32_t oprsz, uint32_t maxsz)
{
static const GVecGen3 ops = { .fni4 = gen_VRSQRTS_tramp };
tcg_gen_gvec_3(s, rd_ofs, rn_ofs, rm_ofs, oprsz, maxsz, &ops);
}
static bool trans_VRSQRTS_fp_3s(DisasContext *s, arg_3same *a)
{
if (a->size != 0) {
/* TODO fp16 support */
return false;
}
return do_3same(s, a, gen_VRSQRTS_fp_3s);
}
static void gen_VFMA_fp_3s(TCGContext *s, TCGv_i32 vd, TCGv_i32 vn, TCGv_i32 vm,
TCGv_ptr fpstatus)
{
gen_helper_vfp_muladds(s, vd, vn, vm, vd, fpstatus);
}
static bool trans_VFMA_fp_3s(DisasContext *s, arg_3same *a)
{
if (!dc_isar_feature(aa32_simdfmac, s)) {
return false;
}
if (a->size != 0) {
/* TODO fp16 support */
return false;
}
return do_3same_fp(s, a, gen_VFMA_fp_3s, true);
}
static void gen_VFMS_fp_3s(TCGContext *s, TCGv_i32 vd, TCGv_i32 vn, TCGv_i32 vm,
TCGv_ptr fpstatus)
{
gen_helper_vfp_negs(s, vn, vn);
gen_helper_vfp_muladds(s, vd, vn, vm, vd, fpstatus);
}
static bool trans_VFMS_fp_3s(DisasContext *s, arg_3same *a)
{
if (!dc_isar_feature(aa32_simdfmac, s)) {
return false;
}
if (a->size != 0) {
/* TODO fp16 support */
return false;
}
return do_3same_fp(s, a, gen_VFMS_fp_3s, true);
}
static bool do_3same_fp_pair(DisasContext *s, arg_3same *a, VFPGen3OpSPFn *fn)
{
/* FP operations handled pairwise 32 bits at a time */
TCGv_i32 tmp, tmp2, tmp3;
TCGv_ptr fpstatus;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
assert(a->q == 0); /* enforced by decode patterns */
/*
* Note that we have to be careful not to clobber the source operands
* in the "vm == vd" case by storing the result of the first pass too
* early. Since Q is 0 there are always just two passes, so instead
* of a complicated loop over each pass we just unroll.
*/
fpstatus = fpstatus_ptr(tcg_ctx, FPST_STD);
tmp = neon_load_reg(s, a->vn, 0);
tmp2 = neon_load_reg(s, a->vn, 1);
fn(tcg_ctx, tmp, tmp, tmp2, fpstatus);
tcg_temp_free_i32(tcg_ctx, tmp2);
tmp3 = neon_load_reg(s, a->vm, 0);
tmp2 = neon_load_reg(s, a->vm, 1);
fn(tcg_ctx, tmp3, tmp3, tmp2, fpstatus);
tcg_temp_free_i32(tcg_ctx, tmp2);
tcg_temp_free_ptr(tcg_ctx, fpstatus);
neon_store_reg(s, a->vd, 0, tmp);
neon_store_reg(s, a->vd, 1, tmp3);
return true;
}
/*
* For all the functions using this macro, size == 1 means fp16,
* which is an architecture extension we don't implement yet.
*/
#define DO_3S_FP_PAIR(INSN,FUNC) \
static bool trans_##INSN##_fp_3s(DisasContext *s, arg_3same *a) \
{ \
if (a->size != 0) { \
/* TODO fp16 support */ \
return false; \
} \
return do_3same_fp_pair(s, a, FUNC); \
}
DO_3S_FP_PAIR(VPADD, gen_helper_vfp_adds)
DO_3S_FP_PAIR(VPMAX, gen_helper_vfp_maxs)
DO_3S_FP_PAIR(VPMIN, gen_helper_vfp_mins)
static bool do_vector_2sh(DisasContext *s, arg_2reg_shift *a, GVecGen2iFn *fn)
{
/* Handle a 2-reg-shift insn which can be vectorized. */
TCGContext *tcg_ctx = s->uc->tcg_ctx;
int vec_size = a->q ? 16 : 8;
int rd_ofs = neon_reg_offset(a->vd, 0);
int rm_ofs = neon_reg_offset(a->vm, 0);
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if ((a->vm | a->vd) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
fn(tcg_ctx, a->size, rd_ofs, rm_ofs, a->shift, vec_size, vec_size);
return true;
}
#define DO_2SH(INSN, FUNC) \
static bool trans_##INSN##_2sh(DisasContext *s, arg_2reg_shift *a) \
{ \
return do_vector_2sh(s, a, FUNC); \
} \
DO_2SH(VSHL, tcg_gen_gvec_shli)
DO_2SH(VSLI, gen_gvec_sli)
DO_2SH(VSRI, gen_gvec_sri)
DO_2SH(VSRA_S, gen_gvec_ssra)
DO_2SH(VSRA_U, gen_gvec_usra)
DO_2SH(VRSHR_S, gen_gvec_srshr)
DO_2SH(VRSHR_U, gen_gvec_urshr)
DO_2SH(VRSRA_S, gen_gvec_srsra)
DO_2SH(VRSRA_U, gen_gvec_ursra)
static bool trans_VSHR_S_2sh(DisasContext *s, arg_2reg_shift *a)
{
/* Signed shift out of range results in all-sign-bits */
a->shift = MIN(a->shift, (8 << a->size) - 1);
return do_vector_2sh(s, a, tcg_gen_gvec_sari);
}
static void gen_zero_rd_2sh(TCGContext *s, unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs,
int64_t shift, uint32_t oprsz, uint32_t maxsz)
{
tcg_gen_gvec_dup_imm(s, vece, rd_ofs, oprsz, maxsz, 0);
}
static bool trans_VSHR_U_2sh(DisasContext *s, arg_2reg_shift *a)
{
/* Shift out of range is architecturally valid and results in zero. */
if (a->shift >= (8 << a->size)) {
return do_vector_2sh(s, a, gen_zero_rd_2sh);
} else {
return do_vector_2sh(s, a, tcg_gen_gvec_shri);
}
}
static bool do_2shift_env_64(DisasContext *s, arg_2reg_shift *a,
NeonGenTwo64OpEnvFn *fn)
{
/*
* 2-reg-and-shift operations, size == 3 case, where the
* function needs to be passed cpu_env.
*/
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i64 constimm;
int pass;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if ((a->vm | a->vd) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
/*
* To avoid excessive duplication of ops we implement shift
* by immediate using the variable shift operations.
*/
constimm = tcg_const_i64(tcg_ctx, dup_const(a->size, a->shift));
for (pass = 0; pass < a->q + 1; pass++) {
TCGv_i64 tmp = tcg_temp_new_i64(tcg_ctx);
neon_load_reg64(s, tmp, a->vm + pass);
fn(tcg_ctx, tmp, tcg_ctx->cpu_env, tmp, constimm);
neon_store_reg64(s, tmp, a->vd + pass);
tcg_temp_free_i64(tcg_ctx, tmp);
}
tcg_temp_free_i64(tcg_ctx, constimm);
return true;
}
static bool do_2shift_env_32(DisasContext *s, arg_2reg_shift *a,
NeonGenTwoOpEnvFn *fn)
{
/*
* 2-reg-and-shift operations, size < 3 case, where the
* helper needs to be passed cpu_env.
*/
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i32 constimm;
int pass;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if ((a->vm | a->vd) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
/*
* To avoid excessive duplication of ops we implement shift
* by immediate using the variable shift operations.
*/
constimm = tcg_const_i32(tcg_ctx, dup_const(a->size, a->shift));
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
TCGv_i32 tmp = neon_load_reg(s, a->vm, pass);
fn(tcg_ctx, tmp, tcg_ctx->cpu_env, tmp, constimm);
neon_store_reg(s, a->vd, pass, tmp);
}
tcg_temp_free_i32(tcg_ctx, constimm);
return true;
}
#define DO_2SHIFT_ENV(INSN, FUNC) \
static bool trans_##INSN##_64_2sh(DisasContext *s, arg_2reg_shift *a) \
{ \
return do_2shift_env_64(s, a, gen_helper_neon_##FUNC##64); \
} \
static bool trans_##INSN##_2sh(DisasContext *s, arg_2reg_shift *a) \
{ \
static NeonGenTwoOpEnvFn * const fns[] = { \
gen_helper_neon_##FUNC##8, \
gen_helper_neon_##FUNC##16, \
gen_helper_neon_##FUNC##32, \
}; \
assert(a->size < ARRAY_SIZE(fns)); \
return do_2shift_env_32(s, a, fns[a->size]); \
}
DO_2SHIFT_ENV(VQSHLU, qshlu_s)
DO_2SHIFT_ENV(VQSHL_U, qshl_u)
DO_2SHIFT_ENV(VQSHL_S, qshl_s)
static bool do_2shift_narrow_64(DisasContext *s, arg_2reg_shift *a,
NeonGenTwo64OpFn *shiftfn,
NeonGenNarrowEnvFn *narrowfn)
{
/* 2-reg-and-shift narrowing-shift operations, size == 3 case */
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i64 constimm, rm1, rm2;
TCGv_i32 rd;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if (a->vm & 1) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
/*
* This is always a right shift, and the shiftfn is always a
* left-shift helper, which thus needs the negated shift count.
*/
constimm = tcg_const_i64(tcg_ctx, -a->shift);
rm1 = tcg_temp_new_i64(tcg_ctx);
rm2 = tcg_temp_new_i64(tcg_ctx);
/* Load both inputs first to avoid potential overwrite if rm == rd */
neon_load_reg64(s, rm1, a->vm);
neon_load_reg64(s, rm2, a->vm + 1);
shiftfn(tcg_ctx, rm1, rm1, constimm);
rd = tcg_temp_new_i32(tcg_ctx);
narrowfn(tcg_ctx, rd, tcg_ctx->cpu_env, rm1);
neon_store_reg(s, a->vd, 0, rd);
shiftfn(tcg_ctx, rm2, rm2, constimm);
rd = tcg_temp_new_i32(tcg_ctx);
narrowfn(tcg_ctx, rd, tcg_ctx->cpu_env, rm2);
neon_store_reg(s, a->vd, 1, rd);
tcg_temp_free_i64(tcg_ctx, rm1);
tcg_temp_free_i64(tcg_ctx, rm2);
tcg_temp_free_i64(tcg_ctx, constimm);
return true;
}
static bool do_2shift_narrow_32(DisasContext *s, arg_2reg_shift *a,
NeonGenTwoOpFn *shiftfn,
NeonGenNarrowEnvFn *narrowfn)
{
/* 2-reg-and-shift narrowing-shift operations, size < 3 case */
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i32 constimm, rm1, rm2, rm3, rm4;
TCGv_i64 rtmp;
uint32_t imm;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if (a->vm & 1) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
/*
* This is always a right shift, and the shiftfn is always a
* left-shift helper, which thus needs the negated shift count
* duplicated into each lane of the immediate value.
*/
if (a->size == 1) {
imm = (uint16_t)(-a->shift);
imm |= imm << 16;
} else {
/* size == 2 */
imm = -a->shift;
}
constimm = tcg_const_i32(tcg_ctx, imm);
/* Load all inputs first to avoid potential overwrite */
rm1 = neon_load_reg(s, a->vm, 0);
rm2 = neon_load_reg(s, a->vm, 1);
rm3 = neon_load_reg(s, a->vm + 1, 0);
rm4 = neon_load_reg(s, a->vm + 1, 1);
rtmp = tcg_temp_new_i64(tcg_ctx);
shiftfn(tcg_ctx, rm1, rm1, constimm);
shiftfn(tcg_ctx, rm2, rm2, constimm);
tcg_gen_concat_i32_i64(tcg_ctx, rtmp, rm1, rm2);
tcg_temp_free_i32(tcg_ctx, rm2);
narrowfn(tcg_ctx, rm1, tcg_ctx->cpu_env, rtmp);
neon_store_reg(s, a->vd, 0, rm1);
shiftfn(tcg_ctx, rm3, rm3, constimm);
shiftfn(tcg_ctx, rm4, rm4, constimm);
tcg_temp_free_i32(tcg_ctx, constimm);
tcg_gen_concat_i32_i64(tcg_ctx, rtmp, rm3, rm4);
tcg_temp_free_i32(tcg_ctx, rm4);
narrowfn(tcg_ctx, rm3, tcg_ctx->cpu_env, rtmp);
tcg_temp_free_i64(tcg_ctx, rtmp);
neon_store_reg(s, a->vd, 1, rm3);
return true;
}
#define DO_2SN_64(INSN, FUNC, NARROWFUNC) \
static bool trans_##INSN##_2sh(DisasContext *s, arg_2reg_shift *a) \
{ \
return do_2shift_narrow_64(s, a, FUNC, NARROWFUNC); \
}
#define DO_2SN_32(INSN, FUNC, NARROWFUNC) \
static bool trans_##INSN##_2sh(DisasContext *s, arg_2reg_shift *a) \
{ \
return do_2shift_narrow_32(s, a, FUNC, NARROWFUNC); \
}
static void gen_neon_narrow_u32(TCGContext *s, TCGv_i32 dest, TCGv_ptr env, TCGv_i64 src)
{
tcg_gen_extrl_i64_i32(s, dest, src);
}
static void gen_neon_narrow_u16(TCGContext *s, TCGv_i32 dest, TCGv_ptr env, TCGv_i64 src)
{
gen_helper_neon_narrow_u16(s, dest, src);
}
static void gen_neon_narrow_u8(TCGContext *s, TCGv_i32 dest, TCGv_ptr env, TCGv_i64 src)
{
gen_helper_neon_narrow_u8(s, dest, src);
}
DO_2SN_64(VSHRN_64, gen_ushl_i64, gen_neon_narrow_u32)
DO_2SN_32(VSHRN_32, gen_ushl_i32, gen_neon_narrow_u16)
DO_2SN_32(VSHRN_16, gen_helper_neon_shl_u16, gen_neon_narrow_u8)
DO_2SN_64(VRSHRN_64, gen_helper_neon_rshl_u64, gen_neon_narrow_u32)
DO_2SN_32(VRSHRN_32, gen_helper_neon_rshl_u32, gen_neon_narrow_u16)
DO_2SN_32(VRSHRN_16, gen_helper_neon_rshl_u16, gen_neon_narrow_u8)
DO_2SN_64(VQSHRUN_64, gen_sshl_i64, gen_helper_neon_unarrow_sat32)
DO_2SN_32(VQSHRUN_32, gen_sshl_i32, gen_helper_neon_unarrow_sat16)
DO_2SN_32(VQSHRUN_16, gen_helper_neon_shl_s16, gen_helper_neon_unarrow_sat8)
DO_2SN_64(VQRSHRUN_64, gen_helper_neon_rshl_s64, gen_helper_neon_unarrow_sat32)
DO_2SN_32(VQRSHRUN_32, gen_helper_neon_rshl_s32, gen_helper_neon_unarrow_sat16)
DO_2SN_32(VQRSHRUN_16, gen_helper_neon_rshl_s16, gen_helper_neon_unarrow_sat8)
DO_2SN_64(VQSHRN_S64, gen_sshl_i64, gen_helper_neon_narrow_sat_s32)
DO_2SN_32(VQSHRN_S32, gen_sshl_i32, gen_helper_neon_narrow_sat_s16)
DO_2SN_32(VQSHRN_S16, gen_helper_neon_shl_s16, gen_helper_neon_narrow_sat_s8)
DO_2SN_64(VQRSHRN_S64, gen_helper_neon_rshl_s64, gen_helper_neon_narrow_sat_s32)
DO_2SN_32(VQRSHRN_S32, gen_helper_neon_rshl_s32, gen_helper_neon_narrow_sat_s16)
DO_2SN_32(VQRSHRN_S16, gen_helper_neon_rshl_s16, gen_helper_neon_narrow_sat_s8)
DO_2SN_64(VQSHRN_U64, gen_ushl_i64, gen_helper_neon_narrow_sat_u32)
DO_2SN_32(VQSHRN_U32, gen_ushl_i32, gen_helper_neon_narrow_sat_u16)
DO_2SN_32(VQSHRN_U16, gen_helper_neon_shl_u16, gen_helper_neon_narrow_sat_u8)
DO_2SN_64(VQRSHRN_U64, gen_helper_neon_rshl_u64, gen_helper_neon_narrow_sat_u32)
DO_2SN_32(VQRSHRN_U32, gen_helper_neon_rshl_u32, gen_helper_neon_narrow_sat_u16)
DO_2SN_32(VQRSHRN_U16, gen_helper_neon_rshl_u16, gen_helper_neon_narrow_sat_u8)
static bool do_vshll_2sh(DisasContext *s, arg_2reg_shift *a,
NeonGenWidenFn *widenfn, bool u)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i64 tmp;
TCGv_i32 rm0, rm1;
uint64_t widen_mask = 0;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if (a->vd & 1) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
/*
* This is a widen-and-shift operation. The shift is always less
* than the width of the source type, so after widening the input
* vector we can simply shift the whole 64-bit widened register,
* and then clear the potential overflow bits resulting from left
* bits of the narrow input appearing as right bits of the left
* neighbour narrow input. Calculate a mask of bits to clear.
*/
if ((a->shift != 0) && (a->size < 2 || u)) {
int esize = 8 << a->size;
widen_mask = MAKE_64BIT_MASK(0, esize);
widen_mask >>= esize - a->shift;
widen_mask = dup_const(a->size + 1, widen_mask);
}
rm0 = neon_load_reg(s, a->vm, 0);
rm1 = neon_load_reg(s, a->vm, 1);
tmp = tcg_temp_new_i64(tcg_ctx);
widenfn(tcg_ctx, tmp, rm0);
tcg_temp_free_i32(tcg_ctx, rm0);
if (a->shift != 0) {
tcg_gen_shli_i64(tcg_ctx, tmp, tmp, a->shift);
tcg_gen_andi_i64(tcg_ctx, tmp, tmp, ~widen_mask);
}
neon_store_reg64(s, tmp, a->vd);
widenfn(tcg_ctx, tmp, rm1);
tcg_temp_free_i32(tcg_ctx, rm1);
if (a->shift != 0) {
tcg_gen_shli_i64(tcg_ctx, tmp, tmp, a->shift);
tcg_gen_andi_i64(tcg_ctx, tmp, tmp, ~widen_mask);
}
neon_store_reg64(s, tmp, a->vd + 1);
tcg_temp_free_i64(tcg_ctx, tmp);
return true;
}
static bool trans_VSHLL_S_2sh(DisasContext *s, arg_2reg_shift *a)
{
static NeonGenWidenFn * const widenfn[] = {
gen_helper_neon_widen_s8,
gen_helper_neon_widen_s16,
tcg_gen_ext_i32_i64,
};
return do_vshll_2sh(s, a, widenfn[a->size], false);
}
static bool trans_VSHLL_U_2sh(DisasContext *s, arg_2reg_shift *a)
{
static NeonGenWidenFn * const widenfn[] = {
gen_helper_neon_widen_u8,
gen_helper_neon_widen_u16,
tcg_gen_extu_i32_i64,
};
return do_vshll_2sh(s, a, widenfn[a->size], true);
}
static bool do_fp_2sh(DisasContext *s, arg_2reg_shift *a,
NeonGenTwoSingleOpFn *fn)
{
/* FP operations in 2-reg-and-shift group */
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i32 tmp, shiftv;
TCGv_ptr fpstatus;
int pass;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if ((a->vm | a->vd) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
fpstatus = fpstatus_ptr(tcg_ctx, FPST_STD);
shiftv = tcg_const_i32(tcg_ctx, a->shift);
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
tmp = neon_load_reg(s, a->vm, pass);
fn(tcg_ctx, tmp, tmp, shiftv, fpstatus);
neon_store_reg(s, a->vd, pass, tmp);
}
tcg_temp_free_ptr(tcg_ctx, fpstatus);
tcg_temp_free_i32(tcg_ctx, shiftv);
return true;
}
#define DO_FP_2SH(INSN, FUNC) \
static bool trans_##INSN##_2sh(DisasContext *s, arg_2reg_shift *a) \
{ \
return do_fp_2sh(s, a, FUNC); \
}
DO_FP_2SH(VCVT_SF, gen_helper_vfp_sltos)
DO_FP_2SH(VCVT_UF, gen_helper_vfp_ultos)
DO_FP_2SH(VCVT_FS, gen_helper_vfp_tosls_round_to_zero)
DO_FP_2SH(VCVT_FU, gen_helper_vfp_touls_round_to_zero)
static uint64_t asimd_imm_const(uint32_t imm, int cmode, int op)
{
/*
* Expand the encoded constant.
* Note that cmode = 2,3,4,5,6,7,10,11,12,13 imm=0 is UNPREDICTABLE.
* We choose to not special-case this and will behave as if a
* valid constant encoding of 0 had been given.
* cmode = 15 op = 1 must UNDEF; we assume decode has handled that.
*/
switch (cmode) {
case 0: case 1:
/* no-op */
break;
case 2: case 3:
imm <<= 8;
break;
case 4: case 5:
imm <<= 16;
break;
case 6: case 7:
imm <<= 24;
break;
case 8: case 9:
imm |= imm << 16;
break;
case 10: case 11:
imm = (imm << 8) | (imm << 24);
break;
case 12:
imm = (imm << 8) | 0xff;
break;
case 13:
imm = (imm << 16) | 0xffff;
break;
case 14:
if (op) {
/*
* This is the only case where the top and bottom 32 bits
* of the encoded constant differ.
*/
uint64_t imm64 = 0;
int n;
for (n = 0; n < 8; n++) {
if (imm & (1 << n)) {
imm64 |= (0xffULL << (n * 8));
}
}
return imm64;
}
imm |= (imm << 8) | (imm << 16) | (imm << 24);
break;
case 15:
imm = ((imm & 0x80) << 24) | ((imm & 0x3f) << 19)
| ((imm & 0x40) ? (0x1f << 25) : (1 << 30));
break;
}
if (op) {
imm = ~imm;
}
return dup_const(MO_32, imm);
}
static bool do_1reg_imm(DisasContext *s, arg_1reg_imm *a,
GVecGen2iFn *fn)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
uint64_t imm;
int reg_ofs, vec_size;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) && (a->vd & 0x10)) {
return false;
}
if (a->vd & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
reg_ofs = neon_reg_offset(a->vd, 0);
vec_size = a->q ? 16 : 8;
imm = asimd_imm_const(a->imm, a->cmode, a->op);
fn(tcg_ctx, MO_64, reg_ofs, reg_ofs, imm, vec_size, vec_size);
return true;
}
static void gen_VMOV_1r(TCGContext *s, unsigned vece, uint32_t dofs, uint32_t aofs,
int64_t c, uint32_t oprsz, uint32_t maxsz)
{
tcg_gen_gvec_dup_imm(s, MO_64, dofs, oprsz, maxsz, c);
}
static bool trans_Vimm_1r(DisasContext *s, arg_1reg_imm *a)
{
/* Handle decode of cmode/op here between VORR/VBIC/VMOV */
GVecGen2iFn *fn;
if ((a->cmode & 1) && a->cmode < 12) {
/* for op=1, the imm will be inverted, so BIC becomes AND. */
fn = a->op ? tcg_gen_gvec_andi : tcg_gen_gvec_ori;
} else {
/* There is one unallocated cmode/op combination in this space */
if (a->cmode == 15 && a->op == 1) {
return false;
}
fn = gen_VMOV_1r;
}
return do_1reg_imm(s, a, fn);
}
static bool do_prewiden_3d(DisasContext *s, arg_3diff *a,
NeonGenWidenFn *widenfn,
NeonGenTwo64OpFn *opfn,
bool src1_wide)
{
/* 3-regs different lengths, prewidening case (VADDL/VSUBL/VAADW/VSUBW) */
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i64 rn0_64, rn1_64, rm_64;
TCGv_i32 rm;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if (!widenfn || !opfn) {
/* size == 3 case, which is an entirely different insn group */
return false;
}
if ((a->vd & 1) || (src1_wide && (a->vn & 1))) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
rn0_64 = tcg_temp_new_i64(tcg_ctx);
rn1_64 = tcg_temp_new_i64(tcg_ctx);
rm_64 = tcg_temp_new_i64(tcg_ctx);
if (src1_wide) {
neon_load_reg64(s, rn0_64, a->vn);
} else {
TCGv_i32 tmp = neon_load_reg(s, a->vn, 0);
widenfn(tcg_ctx, rn0_64, tmp);
tcg_temp_free_i32(tcg_ctx, tmp);
}
rm = neon_load_reg(s, a->vm, 0);
widenfn(tcg_ctx, rm_64, rm);
tcg_temp_free_i32(tcg_ctx, rm);
opfn(tcg_ctx, rn0_64, rn0_64, rm_64);
/*
* Load second pass inputs before storing the first pass result, to
* avoid incorrect results if a narrow input overlaps with the result.
*/
if (src1_wide) {
neon_load_reg64(s, rn1_64, a->vn + 1);
} else {
TCGv_i32 tmp = neon_load_reg(s, a->vn, 1);
widenfn(tcg_ctx, rn1_64, tmp);
tcg_temp_free_i32(tcg_ctx, tmp);
}
rm = neon_load_reg(s, a->vm, 1);
neon_store_reg64(s, rn0_64, a->vd);
widenfn(tcg_ctx, rm_64, rm);
tcg_temp_free_i32(tcg_ctx, rm);
opfn(tcg_ctx, rn1_64, rn1_64, rm_64);
neon_store_reg64(s, rn1_64, a->vd + 1);
tcg_temp_free_i64(tcg_ctx, rn0_64);
tcg_temp_free_i64(tcg_ctx, rn1_64);
tcg_temp_free_i64(tcg_ctx, rm_64);
return true;
}
#define DO_PREWIDEN(INSN, S, EXT, OP, SRC1WIDE) \
static bool trans_##INSN##_3d(DisasContext *s, arg_3diff *a) \
{ \
static NeonGenWidenFn * const widenfn[] = { \
gen_helper_neon_widen_##S##8, \
gen_helper_neon_widen_##S##16, \
tcg_gen_##EXT##_i32_i64, \
NULL, \
}; \
static NeonGenTwo64OpFn * const addfn[] = { \
gen_helper_neon_##OP##l_u16, \
gen_helper_neon_##OP##l_u32, \
tcg_gen_##OP##_i64, \
NULL, \
}; \
return do_prewiden_3d(s, a, widenfn[a->size], \
addfn[a->size], SRC1WIDE); \
}
DO_PREWIDEN(VADDL_S, s, ext, add, false)
DO_PREWIDEN(VADDL_U, u, extu, add, false)
DO_PREWIDEN(VSUBL_S, s, ext, sub, false)
DO_PREWIDEN(VSUBL_U, u, extu, sub, false)
DO_PREWIDEN(VADDW_S, s, ext, add, true)
DO_PREWIDEN(VADDW_U, u, extu, add, true)
DO_PREWIDEN(VSUBW_S, s, ext, sub, true)
DO_PREWIDEN(VSUBW_U, u, extu, sub, true)
static bool do_narrow_3d(DisasContext *s, arg_3diff *a,
NeonGenTwo64OpFn *opfn, NeonGenNarrowFn *narrowfn)
{
/* 3-regs different lengths, narrowing (VADDHN/VSUBHN/VRADDHN/VRSUBHN) */
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i64 rn_64, rm_64;
TCGv_i32 rd0, rd1;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if (!opfn || !narrowfn) {
/* size == 3 case, which is an entirely different insn group */
return false;
}
if ((a->vn | a->vm) & 1) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
rn_64 = tcg_temp_new_i64(tcg_ctx);
rm_64 = tcg_temp_new_i64(tcg_ctx);
rd0 = tcg_temp_new_i32(tcg_ctx);
rd1 = tcg_temp_new_i32(tcg_ctx);
neon_load_reg64(s, rn_64, a->vn);
neon_load_reg64(s, rm_64, a->vm);
opfn(tcg_ctx, rn_64, rn_64, rm_64);
narrowfn(tcg_ctx, rd0, rn_64);
neon_load_reg64(s, rn_64, a->vn + 1);
neon_load_reg64(s, rm_64, a->vm + 1);
opfn(tcg_ctx, rn_64, rn_64, rm_64);
narrowfn(tcg_ctx, rd1, rn_64);
neon_store_reg(s, a->vd, 0, rd0);
neon_store_reg(s, a->vd, 1, rd1);
tcg_temp_free_i64(tcg_ctx, rn_64);
tcg_temp_free_i64(tcg_ctx, rm_64);
return true;
}
#define DO_NARROW_3D(INSN, OP, NARROWTYPE, EXTOP) \
static bool trans_##INSN##_3d(DisasContext *s, arg_3diff *a) \
{ \
static NeonGenTwo64OpFn * const addfn[] = { \
gen_helper_neon_##OP##l_u16, \
gen_helper_neon_##OP##l_u32, \
tcg_gen_##OP##_i64, \
NULL, \
}; \
static NeonGenNarrowFn * const narrowfn[] = { \
gen_helper_neon_##NARROWTYPE##_high_u8, \
gen_helper_neon_##NARROWTYPE##_high_u16, \
EXTOP, \
NULL, \
}; \
return do_narrow_3d(s, a, addfn[a->size], narrowfn[a->size]); \
}
static void gen_narrow_round_high_u32(TCGContext *s, TCGv_i32 rd, TCGv_i64 rn)
{
tcg_gen_addi_i64(s, rn, rn, 1u << 31);
tcg_gen_extrh_i64_i32(s, rd, rn);
}
DO_NARROW_3D(VADDHN, add, narrow, tcg_gen_extrh_i64_i32)
DO_NARROW_3D(VSUBHN, sub, narrow, tcg_gen_extrh_i64_i32)
DO_NARROW_3D(VRADDHN, add, narrow_round, gen_narrow_round_high_u32)
DO_NARROW_3D(VRSUBHN, sub, narrow_round, gen_narrow_round_high_u32)
static bool do_long_3d(DisasContext *s, arg_3diff *a,
NeonGenTwoOpWidenFn *opfn,
NeonGenTwo64OpFn *accfn)
{
/*
* 3-regs different lengths, long operations.
* These perform an operation on two inputs that returns a double-width
* result, and then possibly perform an accumulation operation of
* that result into the double-width destination.
*/
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i64 rd0, rd1, tmp;
TCGv_i32 rn, rm;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if (!opfn) {
/* size == 3 case, which is an entirely different insn group */
return false;
}
if (a->vd & 1) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
rd0 = tcg_temp_new_i64(tcg_ctx);
rd1 = tcg_temp_new_i64(tcg_ctx);
rn = neon_load_reg(s, a->vn, 0);
rm = neon_load_reg(s, a->vm, 0);
opfn(tcg_ctx, rd0, rn, rm);
tcg_temp_free_i32(tcg_ctx, rn);
tcg_temp_free_i32(tcg_ctx, rm);
rn = neon_load_reg(s, a->vn, 1);
rm = neon_load_reg(s, a->vm, 1);
opfn(tcg_ctx, rd1, rn, rm);
tcg_temp_free_i32(tcg_ctx, rn);
tcg_temp_free_i32(tcg_ctx, rm);
/* Don't store results until after all loads: they might overlap */
if (accfn) {
tmp = tcg_temp_new_i64(tcg_ctx);
neon_load_reg64(s, tmp, a->vd);
accfn(tcg_ctx, tmp, tmp, rd0);
neon_store_reg64(s, tmp, a->vd);
neon_load_reg64(s, tmp, a->vd + 1);
accfn(tcg_ctx, tmp, tmp, rd1);
neon_store_reg64(s, tmp, a->vd + 1);
tcg_temp_free_i64(tcg_ctx, tmp);
} else {
neon_store_reg64(s, rd0, a->vd);
neon_store_reg64(s, rd1, a->vd + 1);
}
tcg_temp_free_i64(tcg_ctx, rd0);
tcg_temp_free_i64(tcg_ctx, rd1);
return true;
}
static bool trans_VABDL_S_3d(DisasContext *s, arg_3diff *a)
{
static NeonGenTwoOpWidenFn * const opfn[] = {
gen_helper_neon_abdl_s16,
gen_helper_neon_abdl_s32,
gen_helper_neon_abdl_s64,
NULL,
};
return do_long_3d(s, a, opfn[a->size], NULL);
}
static bool trans_VABDL_U_3d(DisasContext *s, arg_3diff *a)
{
static NeonGenTwoOpWidenFn * const opfn[] = {
gen_helper_neon_abdl_u16,
gen_helper_neon_abdl_u32,
gen_helper_neon_abdl_u64,
NULL,
};
return do_long_3d(s, a, opfn[a->size], NULL);
}
static bool trans_VABAL_S_3d(DisasContext *s, arg_3diff *a)
{
static NeonGenTwoOpWidenFn * const opfn[] = {
gen_helper_neon_abdl_s16,
gen_helper_neon_abdl_s32,
gen_helper_neon_abdl_s64,
NULL,
};
static NeonGenTwo64OpFn * const addfn[] = {
gen_helper_neon_addl_u16,
gen_helper_neon_addl_u32,
tcg_gen_add_i64,
NULL,
};
return do_long_3d(s, a, opfn[a->size], addfn[a->size]);
}
static bool trans_VABAL_U_3d(DisasContext *s, arg_3diff *a)
{
static NeonGenTwoOpWidenFn * const opfn[] = {
gen_helper_neon_abdl_u16,
gen_helper_neon_abdl_u32,
gen_helper_neon_abdl_u64,
NULL,
};
static NeonGenTwo64OpFn * const addfn[] = {
gen_helper_neon_addl_u16,
gen_helper_neon_addl_u32,
tcg_gen_add_i64,
NULL,
};
return do_long_3d(s, a, opfn[a->size], addfn[a->size]);
}
static void gen_mull_s32(TCGContext *s, TCGv_i64 rd, TCGv_i32 rn, TCGv_i32 rm)
{
TCGv_i32 lo = tcg_temp_new_i32(s);
TCGv_i32 hi = tcg_temp_new_i32(s);
tcg_gen_muls2_i32(s, lo, hi, rn, rm);
tcg_gen_concat_i32_i64(s, rd, lo, hi);
tcg_temp_free_i32(s, lo);
tcg_temp_free_i32(s, hi);
}
static void gen_mull_u32(TCGContext *s, TCGv_i64 rd, TCGv_i32 rn, TCGv_i32 rm)
{
TCGv_i32 lo = tcg_temp_new_i32(s);
TCGv_i32 hi = tcg_temp_new_i32(s);
tcg_gen_mulu2_i32(s, lo, hi, rn, rm);
tcg_gen_concat_i32_i64(s, rd, lo, hi);
tcg_temp_free_i32(s, lo);
tcg_temp_free_i32(s, hi);
}
static bool trans_VMULL_S_3d(DisasContext *s, arg_3diff *a)
{
static NeonGenTwoOpWidenFn * const opfn[] = {
gen_helper_neon_mull_s8,
gen_helper_neon_mull_s16,
gen_mull_s32,
NULL,
};
return do_long_3d(s, a, opfn[a->size], NULL);
}
static bool trans_VMULL_U_3d(DisasContext *s, arg_3diff *a)
{
static NeonGenTwoOpWidenFn * const opfn[] = {
gen_helper_neon_mull_u8,
gen_helper_neon_mull_u16,
gen_mull_u32,
NULL,
};
return do_long_3d(s, a, opfn[a->size], NULL);
}
#define DO_VMLAL(INSN,MULL,ACC) \
static bool trans_##INSN##_3d(DisasContext *s, arg_3diff *a) \
{ \
static NeonGenTwoOpWidenFn * const opfn[] = { \
gen_helper_neon_##MULL##8, \
gen_helper_neon_##MULL##16, \
gen_##MULL##32, \
NULL, \
}; \
static NeonGenTwo64OpFn * const accfn[] = { \
gen_helper_neon_##ACC##l_u16, \
gen_helper_neon_##ACC##l_u32, \
tcg_gen_##ACC##_i64, \
NULL, \
}; \
return do_long_3d(s, a, opfn[a->size], accfn[a->size]); \
}
DO_VMLAL(VMLAL_S,mull_s,add)
DO_VMLAL(VMLAL_U,mull_u,add)
DO_VMLAL(VMLSL_S,mull_s,sub)
DO_VMLAL(VMLSL_U,mull_u,sub)
static void gen_VQDMULL_16(TCGContext *s, TCGv_i64 rd, TCGv_i32 rn, TCGv_i32 rm)
{
gen_helper_neon_mull_s16(s, rd, rn, rm);
gen_helper_neon_addl_saturate_s32(s, rd, s->cpu_env, rd, rd);
}
static void gen_VQDMULL_32(TCGContext *s, TCGv_i64 rd, TCGv_i32 rn, TCGv_i32 rm)
{
gen_mull_s32(s, rd, rn, rm);
gen_helper_neon_addl_saturate_s64(s, rd, s->cpu_env, rd, rd);
}
static bool trans_VQDMULL_3d(DisasContext *s, arg_3diff *a)
{
static NeonGenTwoOpWidenFn * const opfn[] = {
NULL,
gen_VQDMULL_16,
gen_VQDMULL_32,
NULL,
};
return do_long_3d(s, a, opfn[a->size], NULL);
}
static void gen_VQDMLAL_acc_16(TCGContext *s, TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
{
gen_helper_neon_addl_saturate_s32(s, rd, s->cpu_env, rn, rm);
}
static void gen_VQDMLAL_acc_32(TCGContext *s, TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
{
gen_helper_neon_addl_saturate_s64(s, rd, s->cpu_env, rn, rm);
}
static bool trans_VQDMLAL_3d(DisasContext *s, arg_3diff *a)
{
static NeonGenTwoOpWidenFn * const opfn[] = {
NULL,
gen_VQDMULL_16,
gen_VQDMULL_32,
NULL,
};
static NeonGenTwo64OpFn * const accfn[] = {
NULL,
gen_VQDMLAL_acc_16,
gen_VQDMLAL_acc_32,
NULL,
};
return do_long_3d(s, a, opfn[a->size], accfn[a->size]);
}
static void gen_VQDMLSL_acc_16(TCGContext *s, TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
{
gen_helper_neon_negl_u32(s, rm, rm);
gen_helper_neon_addl_saturate_s32(s, rd, s->cpu_env, rn, rm);
}
static void gen_VQDMLSL_acc_32(TCGContext *s, TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
{
tcg_gen_neg_i64(s, rm, rm);
gen_helper_neon_addl_saturate_s64(s, rd, s->cpu_env, rn, rm);
}
static bool trans_VQDMLSL_3d(DisasContext *s, arg_3diff *a)
{
static NeonGenTwoOpWidenFn * const opfn[] = {
NULL,
gen_VQDMULL_16,
gen_VQDMULL_32,
NULL,
};
static NeonGenTwo64OpFn * const accfn[] = {
NULL,
gen_VQDMLSL_acc_16,
gen_VQDMLSL_acc_32,
NULL,
};
return do_long_3d(s, a, opfn[a->size], accfn[a->size]);
}
static bool trans_VMULL_P_3d(DisasContext *s, arg_3diff *a)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
gen_helper_gvec_3 *fn_gvec;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if (a->vd & 1) {
return false;
}
switch (a->size) {
case 0:
fn_gvec = gen_helper_neon_pmull_h;
break;
case 2:
if (!dc_isar_feature(aa32_pmull, s)) {
return false;
}
fn_gvec = gen_helper_gvec_pmull_q;
break;
default:
return false;
}
if (!vfp_access_check(s)) {
return true;
}
tcg_gen_gvec_3_ool(tcg_ctx, neon_reg_offset(a->vd, 0),
neon_reg_offset(a->vn, 0),
neon_reg_offset(a->vm, 0),
16, 16, 0, fn_gvec);
return true;
}
static void gen_neon_dup_low16(TCGContext *s, TCGv_i32 var)
{
TCGv_i32 tmp = tcg_temp_new_i32(s);
tcg_gen_ext16u_i32(s, var, var);
tcg_gen_shli_i32(s, tmp, var, 16);
tcg_gen_or_i32(s, var, var, tmp);
tcg_temp_free_i32(s, tmp);
}
static void gen_neon_dup_high16(TCGContext *s, TCGv_i32 var)
{
TCGv_i32 tmp = tcg_temp_new_i32(s);
tcg_gen_andi_i32(s, var, var, 0xffff0000);
tcg_gen_shri_i32(s, tmp, var, 16);
tcg_gen_or_i32(s, var, var, tmp);
tcg_temp_free_i32(s, tmp);
}
static inline TCGv_i32 neon_get_scalar(DisasContext *s, int size, int reg)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i32 tmp;
if (size == 1) {
tmp = neon_load_reg(s, reg & 7, reg >> 4);
if (reg & 8) {
gen_neon_dup_high16(tcg_ctx, tmp);
} else {
gen_neon_dup_low16(tcg_ctx, tmp);
}
} else {
tmp = neon_load_reg(s, reg & 15, reg >> 4);
}
return tmp;
}
static bool do_2scalar(DisasContext *s, arg_2scalar *a,
NeonGenTwoOpFn *opfn, NeonGenTwoOpFn *accfn)
{
/*
* Two registers and a scalar: perform an operation between
* the input elements and the scalar, and then possibly
* perform an accumulation operation of that result into the
* destination.
*/
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i32 scalar;
int pass;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if (!opfn) {
/* Bad size (including size == 3, which is a different insn group) */
return false;
}
if (a->q && ((a->vd | a->vn) & 1)) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
scalar = neon_get_scalar(s, a->size, a->vm);
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
TCGv_i32 tmp = neon_load_reg(s, a->vn, pass);
opfn(tcg_ctx, tmp, tmp, scalar);
if (accfn) {
TCGv_i32 rd = neon_load_reg(s, a->vd, pass);
accfn(tcg_ctx, tmp, rd, tmp);
tcg_temp_free_i32(tcg_ctx, rd);
}
neon_store_reg(s, a->vd, pass, tmp);
}
tcg_temp_free_i32(tcg_ctx, scalar);
return true;
}
static bool trans_VMUL_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenTwoOpFn * const opfn[] = {
NULL,
gen_helper_neon_mul_u16,
tcg_gen_mul_i32,
NULL,
};
return do_2scalar(s, a, opfn[a->size], NULL);
}
static bool trans_VMLA_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenTwoOpFn * const opfn[] = {
NULL,
gen_helper_neon_mul_u16,
tcg_gen_mul_i32,
NULL,
};
static NeonGenTwoOpFn * const accfn[] = {
NULL,
gen_helper_neon_add_u16,
tcg_gen_add_i32,
NULL,
};
return do_2scalar(s, a, opfn[a->size], accfn[a->size]);
}
static bool trans_VMLS_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenTwoOpFn * const opfn[] = {
NULL,
gen_helper_neon_mul_u16,
tcg_gen_mul_i32,
NULL,
};
static NeonGenTwoOpFn * const accfn[] = {
NULL,
gen_helper_neon_sub_u16,
tcg_gen_sub_i32,
NULL,
};
return do_2scalar(s, a, opfn[a->size], accfn[a->size]);
}
/*
* Rather than have a float-specific version of do_2scalar just for
* three insns, we wrap a NeonGenTwoSingleOpFn to turn it into
* a NeonGenTwoOpFn.
*/
#define WRAP_FP_FN(WRAPNAME, FUNC) \
static void WRAPNAME(TCGContext *s, TCGv_i32 rd, TCGv_i32 rn, TCGv_i32 rm) \
{ \
TCGv_ptr fpstatus = fpstatus_ptr(s, FPST_STD); \
FUNC(s, rd, rn, rm, fpstatus); \
tcg_temp_free_ptr(s, fpstatus); \
}
WRAP_FP_FN(gen_VMUL_F_mul, gen_helper_vfp_muls)
WRAP_FP_FN(gen_VMUL_F_add, gen_helper_vfp_adds)
WRAP_FP_FN(gen_VMUL_F_sub, gen_helper_vfp_subs)
static bool trans_VMUL_F_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenTwoOpFn * const opfn[] = {
NULL,
NULL, /* TODO: fp16 support */
gen_VMUL_F_mul,
NULL,
};
return do_2scalar(s, a, opfn[a->size], NULL);
}
static bool trans_VMLA_F_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenTwoOpFn * const opfn[] = {
NULL,
NULL, /* TODO: fp16 support */
gen_VMUL_F_mul,
NULL,
};
static NeonGenTwoOpFn * const accfn[] = {
NULL,
NULL, /* TODO: fp16 support */
gen_VMUL_F_add,
NULL,
};
return do_2scalar(s, a, opfn[a->size], accfn[a->size]);
}
static bool trans_VMLS_F_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenTwoOpFn * const opfn[] = {
NULL,
NULL, /* TODO: fp16 support */
gen_VMUL_F_mul,
NULL,
};
static NeonGenTwoOpFn * const accfn[] = {
NULL,
NULL, /* TODO: fp16 support */
gen_VMUL_F_sub,
NULL,
};
return do_2scalar(s, a, opfn[a->size], accfn[a->size]);
}
WRAP_ENV_FN(gen_VQDMULH_16, gen_helper_neon_qdmulh_s16)
WRAP_ENV_FN(gen_VQDMULH_32, gen_helper_neon_qdmulh_s32)
WRAP_ENV_FN(gen_VQRDMULH_16, gen_helper_neon_qrdmulh_s16)
WRAP_ENV_FN(gen_VQRDMULH_32, gen_helper_neon_qrdmulh_s32)
static bool trans_VQDMULH_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenTwoOpFn * const opfn[] = {
NULL,
gen_VQDMULH_16,
gen_VQDMULH_32,
NULL,
};
return do_2scalar(s, a, opfn[a->size], NULL);
}
static bool trans_VQRDMULH_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenTwoOpFn * const opfn[] = {
NULL,
gen_VQRDMULH_16,
gen_VQRDMULH_32,
NULL,
};
return do_2scalar(s, a, opfn[a->size], NULL);
}
static bool do_vqrdmlah_2sc(DisasContext *s, arg_2scalar *a,
NeonGenThreeOpEnvFn *opfn)
{
/*
* VQRDMLAH/VQRDMLSH: this is like do_2scalar, but the opfn
* performs a kind of fused op-then-accumulate using a helper
* function that takes all of rd, rn and the scalar at once.
*/
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i32 scalar;
int pass;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
if (!dc_isar_feature(aa32_rdm, s)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if (!opfn) {
/* Bad size (including size == 3, which is a different insn group) */
return false;
}
if (a->q && ((a->vd | a->vn) & 1)) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
scalar = neon_get_scalar(s, a->size, a->vm);
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
TCGv_i32 rn = neon_load_reg(s, a->vn, pass);
TCGv_i32 rd = neon_load_reg(s, a->vd, pass);
opfn(tcg_ctx, rd, tcg_ctx->cpu_env, rn, scalar, rd);
tcg_temp_free_i32(tcg_ctx, rn);
neon_store_reg(s, a->vd, pass, rd);
}
tcg_temp_free_i32(tcg_ctx, scalar);
return true;
}
static bool trans_VQRDMLAH_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenThreeOpEnvFn *opfn[] = {
NULL,
gen_helper_neon_qrdmlah_s16,
gen_helper_neon_qrdmlah_s32,
NULL,
};
return do_vqrdmlah_2sc(s, a, opfn[a->size]);
}
static bool trans_VQRDMLSH_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenThreeOpEnvFn *opfn[] = {
NULL,
gen_helper_neon_qrdmlsh_s16,
gen_helper_neon_qrdmlsh_s32,
NULL,
};
return do_vqrdmlah_2sc(s, a, opfn[a->size]);
}
static bool do_2scalar_long(DisasContext *s, arg_2scalar *a,
NeonGenTwoOpWidenFn *opfn,
NeonGenTwo64OpFn *accfn)
{
/*
* Two registers and a scalar, long operations: perform an
* operation on the input elements and the scalar which produces
* a double-width result, and then possibly perform an accumulation
* operation of that result into the destination.
*/
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i32 scalar, rn;
TCGv_i64 rn0_64, rn1_64;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if (!opfn) {
/* Bad size (including size == 3, which is a different insn group) */
return false;
}
if (a->vd & 1) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
scalar = neon_get_scalar(s, a->size, a->vm);
/* Load all inputs before writing any outputs, in case of overlap */
rn = neon_load_reg(s, a->vn, 0);
rn0_64 = tcg_temp_new_i64(tcg_ctx);
opfn(tcg_ctx, rn0_64, rn, scalar);
tcg_temp_free_i32(tcg_ctx, rn);
rn = neon_load_reg(s, a->vn, 1);
rn1_64 = tcg_temp_new_i64(tcg_ctx);
opfn(tcg_ctx, rn1_64, rn, scalar);
tcg_temp_free_i32(tcg_ctx, rn);
tcg_temp_free_i32(tcg_ctx, scalar);
if (accfn) {
TCGv_i64 t64 = tcg_temp_new_i64(tcg_ctx);
neon_load_reg64(s, t64, a->vd);
accfn(tcg_ctx, t64, t64, rn0_64);
neon_store_reg64(s, t64, a->vd);
neon_load_reg64(s, t64, a->vd + 1);
accfn(tcg_ctx, t64, t64, rn1_64);
neon_store_reg64(s, t64, a->vd + 1);
tcg_temp_free_i64(tcg_ctx, t64);
} else {
neon_store_reg64(s, rn0_64, a->vd);
neon_store_reg64(s, rn1_64, a->vd + 1);
}
tcg_temp_free_i64(tcg_ctx, rn0_64);
tcg_temp_free_i64(tcg_ctx, rn1_64);
return true;
}
static bool trans_VMULL_S_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenTwoOpWidenFn * const opfn[] = {
NULL,
gen_helper_neon_mull_s16,
gen_mull_s32,
NULL,
};
return do_2scalar_long(s, a, opfn[a->size], NULL);
}
static bool trans_VMULL_U_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenTwoOpWidenFn * const opfn[] = {
NULL,
gen_helper_neon_mull_u16,
gen_mull_u32,
NULL,
};
return do_2scalar_long(s, a, opfn[a->size], NULL);
}
#define DO_VMLAL_2SC(INSN, MULL, ACC) \
static bool trans_##INSN##_2sc(DisasContext *s, arg_2scalar *a) \
{ \
static NeonGenTwoOpWidenFn * const opfn[] = { \
NULL, \
gen_helper_neon_##MULL##16, \
gen_##MULL##32, \
NULL, \
}; \
static NeonGenTwo64OpFn * const accfn[] = { \
NULL, \
gen_helper_neon_##ACC##l_u32, \
tcg_gen_##ACC##_i64, \
NULL, \
}; \
return do_2scalar_long(s, a, opfn[a->size], accfn[a->size]); \
}
DO_VMLAL_2SC(VMLAL_S, mull_s, add)
DO_VMLAL_2SC(VMLAL_U, mull_u, add)
DO_VMLAL_2SC(VMLSL_S, mull_s, sub)
DO_VMLAL_2SC(VMLSL_U, mull_u, sub)
static bool trans_VQDMULL_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenTwoOpWidenFn * const opfn[] = {
NULL,
gen_VQDMULL_16,
gen_VQDMULL_32,
NULL,
};
return do_2scalar_long(s, a, opfn[a->size], NULL);
}
static bool trans_VQDMLAL_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenTwoOpWidenFn * const opfn[] = {
NULL,
gen_VQDMULL_16,
gen_VQDMULL_32,
NULL,
};
static NeonGenTwo64OpFn * const accfn[] = {
NULL,
gen_VQDMLAL_acc_16,
gen_VQDMLAL_acc_32,
NULL,
};
return do_2scalar_long(s, a, opfn[a->size], accfn[a->size]);
}
static bool trans_VQDMLSL_2sc(DisasContext *s, arg_2scalar *a)
{
static NeonGenTwoOpWidenFn * const opfn[] = {
NULL,
gen_VQDMULL_16,
gen_VQDMULL_32,
NULL,
};
static NeonGenTwo64OpFn * const accfn[] = {
NULL,
gen_VQDMLSL_acc_16,
gen_VQDMLSL_acc_32,
NULL,
};
return do_2scalar_long(s, a, opfn[a->size], accfn[a->size]);
}
static bool trans_VEXT(DisasContext *s, arg_VEXT *a)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if ((a->vn | a->vm | a->vd) & a->q) {
return false;
}
if (a->imm > 7 && !a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
if (!a->q) {
/* Extract 64 bits from <Vm:Vn> */
TCGv_i64 left, right, dest;
left = tcg_temp_new_i64(tcg_ctx);
right = tcg_temp_new_i64(tcg_ctx);
dest = tcg_temp_new_i64(tcg_ctx);
neon_load_reg64(s, right, a->vn);
neon_load_reg64(s, left, a->vm);
tcg_gen_extract2_i64(tcg_ctx, dest, right, left, a->imm * 8);
neon_store_reg64(s, dest, a->vd);
tcg_temp_free_i64(tcg_ctx, left);
tcg_temp_free_i64(tcg_ctx, right);
tcg_temp_free_i64(tcg_ctx, dest);
} else {
/* Extract 128 bits from <Vm+1:Vm:Vn+1:Vn> */
TCGv_i64 left, middle, right, destleft, destright;
left = tcg_temp_new_i64(tcg_ctx);
middle = tcg_temp_new_i64(tcg_ctx);
right = tcg_temp_new_i64(tcg_ctx);
destleft = tcg_temp_new_i64(tcg_ctx);
destright = tcg_temp_new_i64(tcg_ctx);
if (a->imm < 8) {
neon_load_reg64(s, right, a->vn);
neon_load_reg64(s, middle, a->vn + 1);
tcg_gen_extract2_i64(tcg_ctx, destright, right, middle, a->imm * 8);
neon_load_reg64(s, left, a->vm);
tcg_gen_extract2_i64(tcg_ctx, destleft, middle, left, a->imm * 8);
} else {
neon_load_reg64(s, right, a->vn + 1);
neon_load_reg64(s, middle, a->vm);
tcg_gen_extract2_i64(tcg_ctx, destright, right, middle, (a->imm - 8) * 8);
neon_load_reg64(s, left, a->vm + 1);
tcg_gen_extract2_i64(tcg_ctx, destleft, middle, left, (a->imm - 8) * 8);
}
neon_store_reg64(s, destright, a->vd);
neon_store_reg64(s, destleft, a->vd + 1);
tcg_temp_free_i64(tcg_ctx, destright);
tcg_temp_free_i64(tcg_ctx, destleft);
tcg_temp_free_i64(tcg_ctx, right);
tcg_temp_free_i64(tcg_ctx, middle);
tcg_temp_free_i64(tcg_ctx, left);
}
return true;
}
static bool trans_VTBL(DisasContext *s, arg_VTBL *a)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
int n;
TCGv_i32 tmp, tmp2, tmp3, tmp4;
TCGv_ptr ptr1;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vn | a->vm) & 0x10)) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
n = a->len + 1;
if ((a->vn + n) > 32) {
/*
* This is UNPREDICTABLE; we choose to UNDEF to avoid the
* helper function running off the end of the register file.
*/
return false;
}
n <<= 3;
if (a->op) {
tmp = neon_load_reg(s, a->vd, 0);
} else {
tmp = tcg_temp_new_i32(tcg_ctx);
tcg_gen_movi_i32(tcg_ctx, tmp, 0);
}
tmp2 = neon_load_reg(s, a->vm, 0);
ptr1 = vfp_reg_ptr(s, true, a->vn);
tmp4 = tcg_const_i32(tcg_ctx, n);
gen_helper_neon_tbl(tcg_ctx, tmp2, tmp2, tmp, ptr1, tmp4);
tcg_temp_free_i32(tcg_ctx, tmp);
if (a->op) {
tmp = neon_load_reg(s, a->vd, 1);
} else {
tmp = tcg_temp_new_i32(tcg_ctx);
tcg_gen_movi_i32(tcg_ctx, tmp, 0);
}
tmp3 = neon_load_reg(s, a->vm, 1);
gen_helper_neon_tbl(tcg_ctx, tmp3, tmp3, tmp, ptr1, tmp4);
tcg_temp_free_i32(tcg_ctx, tmp4);
tcg_temp_free_ptr(tcg_ctx, ptr1);
neon_store_reg(s, a->vd, 0, tmp2);
neon_store_reg(s, a->vd, 1, tmp3);
tcg_temp_free_i32(tcg_ctx, tmp);
return true;
}
static bool trans_VDUP_scalar(DisasContext *s, arg_VDUP_scalar *a)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if (a->vd & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
tcg_gen_gvec_dup_mem(tcg_ctx, a->size, neon_reg_offset(a->vd, 0),
neon_element_offset(a->vm, a->index, a->size),
a->q ? 16 : 8, a->q ? 16 : 8);
return true;
}
static bool trans_VREV64(DisasContext *s, arg_VREV64 *a)
{
int pass, half;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if ((a->vd | a->vm) & a->q) {
return false;
}
if (a->size == 3) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
for (pass = 0; pass < (a->q ? 2 : 1); pass++) {
TCGv_i32 tmp[2];
for (half = 0; half < 2; half++) {
tmp[half] = neon_load_reg(s, a->vm, pass * 2 + half);
switch (a->size) {
case 0:
tcg_gen_bswap32_i32(tcg_ctx, tmp[half], tmp[half]);
break;
case 1:
gen_swap_half(tcg_ctx, tmp[half], tmp[half]);
break;
case 2:
break;
default:
g_assert_not_reached();
}
}
neon_store_reg(s, a->vd, pass * 2, tmp[1]);
neon_store_reg(s, a->vd, pass * 2 + 1, tmp[0]);
}
return true;
}
static bool do_2misc_pairwise(DisasContext *s, arg_2misc *a,
NeonGenWidenFn *widenfn,
NeonGenTwo64OpFn *opfn,
NeonGenTwo64OpFn *accfn)
{
/*
* Pairwise long operations: widen both halves of the pair,
* combine the pairs with the opfn, and then possibly accumulate
* into the destination with the accfn.
*/
int pass;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if ((a->vd | a->vm) & a->q) {
return false;
}
if (!widenfn) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
for (pass = 0; pass < a->q + 1; pass++) {
TCGv_i32 tmp;
TCGv_i64 rm0_64, rm1_64, rd_64;
rm0_64 = tcg_temp_new_i64(tcg_ctx);
rm1_64 = tcg_temp_new_i64(tcg_ctx);
rd_64 = tcg_temp_new_i64(tcg_ctx);
tmp = neon_load_reg(s, a->vm, pass * 2);
widenfn(tcg_ctx, rm0_64, tmp);
tcg_temp_free_i32(tcg_ctx, tmp);
tmp = neon_load_reg(s, a->vm, pass * 2 + 1);
widenfn(tcg_ctx, rm1_64, tmp);
tcg_temp_free_i32(tcg_ctx, tmp);
opfn(tcg_ctx, rd_64, rm0_64, rm1_64);
tcg_temp_free_i64(tcg_ctx, rm0_64);
tcg_temp_free_i64(tcg_ctx, rm1_64);
if (accfn) {
TCGv_i64 tmp64 = tcg_temp_new_i64(tcg_ctx);
neon_load_reg64(s, tmp64, a->vd + pass);
accfn(tcg_ctx, rd_64, tmp64, rd_64);
tcg_temp_free_i64(tcg_ctx, tmp64);
}
neon_store_reg64(s, rd_64, a->vd + pass);
tcg_temp_free_i64(tcg_ctx, rd_64);
}
return true;
}
static bool trans_VPADDL_S(DisasContext *s, arg_2misc *a)
{
static NeonGenWidenFn * const widenfn[] = {
gen_helper_neon_widen_s8,
gen_helper_neon_widen_s16,
tcg_gen_ext_i32_i64,
NULL,
};
static NeonGenTwo64OpFn * const opfn[] = {
gen_helper_neon_paddl_u16,
gen_helper_neon_paddl_u32,
tcg_gen_add_i64,
NULL,
};
return do_2misc_pairwise(s, a, widenfn[a->size], opfn[a->size], NULL);
}
static bool trans_VPADDL_U(DisasContext *s, arg_2misc *a)
{
static NeonGenWidenFn * const widenfn[] = {
gen_helper_neon_widen_u8,
gen_helper_neon_widen_u16,
tcg_gen_extu_i32_i64,
NULL,
};
static NeonGenTwo64OpFn * const opfn[] = {
gen_helper_neon_paddl_u16,
gen_helper_neon_paddl_u32,
tcg_gen_add_i64,
NULL,
};
return do_2misc_pairwise(s, a, widenfn[a->size], opfn[a->size], NULL);
}
static bool trans_VPADAL_S(DisasContext *s, arg_2misc *a)
{
static NeonGenWidenFn * const widenfn[] = {
gen_helper_neon_widen_s8,
gen_helper_neon_widen_s16,
tcg_gen_ext_i32_i64,
NULL,
};
static NeonGenTwo64OpFn * const opfn[] = {
gen_helper_neon_paddl_u16,
gen_helper_neon_paddl_u32,
tcg_gen_add_i64,
NULL,
};
static NeonGenTwo64OpFn * const accfn[] = {
gen_helper_neon_addl_u16,
gen_helper_neon_addl_u32,
tcg_gen_add_i64,
NULL,
};
return do_2misc_pairwise(s, a, widenfn[a->size], opfn[a->size],
accfn[a->size]);
}
static bool trans_VPADAL_U(DisasContext *s, arg_2misc *a)
{
static NeonGenWidenFn * const widenfn[] = {
gen_helper_neon_widen_u8,
gen_helper_neon_widen_u16,
tcg_gen_extu_i32_i64,
NULL,
};
static NeonGenTwo64OpFn * const opfn[] = {
gen_helper_neon_paddl_u16,
gen_helper_neon_paddl_u32,
tcg_gen_add_i64,
NULL,
};
static NeonGenTwo64OpFn * const accfn[] = {
gen_helper_neon_addl_u16,
gen_helper_neon_addl_u32,
tcg_gen_add_i64,
NULL,
};
return do_2misc_pairwise(s, a, widenfn[a->size], opfn[a->size],
accfn[a->size]);
}
typedef void ZipFn(TCGContext *, TCGv_ptr, TCGv_ptr);
static bool do_zip_uzp(DisasContext *s, arg_2misc *a,
ZipFn *fn)
{
TCGv_ptr pd, pm;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if ((a->vd | a->vm) & a->q) {
return false;
}
if (!fn) {
/* Bad size or size/q combination */
return false;
}
if (!vfp_access_check(s)) {
return true;
}
pd = vfp_reg_ptr(s, true, a->vd);
pm = vfp_reg_ptr(s, true, a->vm);
fn(tcg_ctx, pd, pm);
tcg_temp_free_ptr(tcg_ctx, pd);
tcg_temp_free_ptr(tcg_ctx, pm);
return true;
}
static bool trans_VUZP(DisasContext *s, arg_2misc *a)
{
static ZipFn * const fn[2][4] = {
{
gen_helper_neon_unzip8,
gen_helper_neon_unzip16,
NULL,
NULL,
}, {
gen_helper_neon_qunzip8,
gen_helper_neon_qunzip16,
gen_helper_neon_qunzip32,
NULL,
}
};
return do_zip_uzp(s, a, fn[a->q][a->size]);
}
static bool trans_VZIP(DisasContext *s, arg_2misc *a)
{
static ZipFn * const fn[2][4] = {
{
gen_helper_neon_zip8,
gen_helper_neon_zip16,
NULL,
NULL,
}, {
gen_helper_neon_qzip8,
gen_helper_neon_qzip16,
gen_helper_neon_qzip32,
NULL,
}
};
return do_zip_uzp(s, a, fn[a->q][a->size]);
}
static bool do_vmovn(DisasContext *s, arg_2misc *a,
NeonGenNarrowEnvFn *narrowfn)
{
TCGv_i64 rm;
TCGv_i32 rd0, rd1;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if (a->vm & 1) {
return false;
}
if (!narrowfn) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
rm = tcg_temp_new_i64(tcg_ctx);
rd0 = tcg_temp_new_i32(tcg_ctx);
rd1 = tcg_temp_new_i32(tcg_ctx);
neon_load_reg64(s, rm, a->vm);
narrowfn(tcg_ctx, rd0, tcg_ctx->cpu_env, rm);
neon_load_reg64(s, rm, a->vm + 1);
narrowfn(tcg_ctx, rd1, tcg_ctx->cpu_env, rm);
neon_store_reg(s, a->vd, 0, rd0);
neon_store_reg(s, a->vd, 1, rd1);
tcg_temp_free_i64(tcg_ctx, rm);
return true;
}
#define DO_VMOVN(INSN, FUNC) \
static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
{ \
static NeonGenNarrowEnvFn * const narrowfn[] = { \
FUNC##8, \
FUNC##16, \
FUNC##32, \
NULL, \
}; \
return do_vmovn(s, a, narrowfn[a->size]); \
}
DO_VMOVN(VMOVN, gen_neon_narrow_u)
DO_VMOVN(VQMOVUN, gen_helper_neon_unarrow_sat)
DO_VMOVN(VQMOVN_S, gen_helper_neon_narrow_sat_s)
DO_VMOVN(VQMOVN_U, gen_helper_neon_narrow_sat_u)
static bool trans_VSHLL(DisasContext *s, arg_2misc *a)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i32 rm0, rm1;
TCGv_i64 rd;
static NeonGenWidenFn * const widenfns[] = {
gen_helper_neon_widen_u8,
gen_helper_neon_widen_u16,
tcg_gen_extu_i32_i64,
NULL,
};
NeonGenWidenFn *widenfn = widenfns[a->size];
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if (a->vd & 1) {
return false;
}
if (!widenfn) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
rd = tcg_temp_new_i64(tcg_ctx);
rm0 = neon_load_reg(s, a->vm, 0);
rm1 = neon_load_reg(s, a->vm, 1);
widenfn(tcg_ctx, rd, rm0);
tcg_gen_shli_i64(tcg_ctx, rd, rd, 8 << a->size);
neon_store_reg64(s, rd, a->vd);
widenfn(tcg_ctx, rd, rm1);
tcg_gen_shli_i64(tcg_ctx, rd, rd, 8 << a->size);
neon_store_reg64(s, rd, a->vd + 1);
tcg_temp_free_i64(tcg_ctx, rd);
tcg_temp_free_i32(tcg_ctx, rm0);
tcg_temp_free_i32(tcg_ctx, rm1);
return true;
}
static bool trans_VCVT_F16_F32(DisasContext *s, arg_2misc *a)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_ptr fpst;
TCGv_i32 ahp, tmp, tmp2, tmp3;
if (!arm_dc_feature(s, ARM_FEATURE_NEON) ||
!dc_isar_feature(aa32_fp16_spconv, s)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if ((a->vm & 1) || (a->size != 1)) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
fpst = fpstatus_ptr(tcg_ctx, FPST_STD);
ahp = get_ahp_flag(s);
tmp = neon_load_reg(s, a->vm, 0);
gen_helper_vfp_fcvt_f32_to_f16(tcg_ctx, tmp, tmp, fpst, ahp);
tmp2 = neon_load_reg(s, a->vm, 1);
gen_helper_vfp_fcvt_f32_to_f16(tcg_ctx, tmp2, tmp2, fpst, ahp);
tcg_gen_shli_i32(tcg_ctx, tmp2, tmp2, 16);
tcg_gen_or_i32(tcg_ctx, tmp2, tmp2, tmp);
tcg_temp_free_i32(tcg_ctx, tmp);
tmp = neon_load_reg(s, a->vm, 2);
gen_helper_vfp_fcvt_f32_to_f16(tcg_ctx, tmp, tmp, fpst, ahp);
tmp3 = neon_load_reg(s, a->vm, 3);
neon_store_reg(s, a->vd, 0, tmp2);
gen_helper_vfp_fcvt_f32_to_f16(tcg_ctx, tmp3, tmp3, fpst, ahp);
tcg_gen_shli_i32(tcg_ctx, tmp3, tmp3, 16);
tcg_gen_or_i32(tcg_ctx, tmp3, tmp3, tmp);
neon_store_reg(s, a->vd, 1, tmp3);
tcg_temp_free_i32(tcg_ctx, tmp);
tcg_temp_free_i32(tcg_ctx, ahp);
tcg_temp_free_ptr(tcg_ctx, fpst);
return true;
}
static bool trans_VCVT_F32_F16(DisasContext *s, arg_2misc *a)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_ptr fpst;
TCGv_i32 ahp, tmp, tmp2, tmp3;
if (!arm_dc_feature(s, ARM_FEATURE_NEON) ||
!dc_isar_feature(aa32_fp16_spconv, s)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if ((a->vd & 1) || (a->size != 1)) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
fpst = fpstatus_ptr(tcg_ctx, FPST_STD);
ahp = get_ahp_flag(s);
tmp3 = tcg_temp_new_i32(tcg_ctx);
tmp = neon_load_reg(s, a->vm, 0);
tmp2 = neon_load_reg(s, a->vm, 1);
tcg_gen_ext16u_i32(tcg_ctx, tmp3, tmp);
gen_helper_vfp_fcvt_f16_to_f32(tcg_ctx, tmp3, tmp3, fpst, ahp);
neon_store_reg(s, a->vd, 0, tmp3);
tcg_gen_shri_i32(tcg_ctx, tmp, tmp, 16);
gen_helper_vfp_fcvt_f16_to_f32(tcg_ctx, tmp, tmp, fpst, ahp);
neon_store_reg(s, a->vd, 1, tmp);
tmp3 = tcg_temp_new_i32(tcg_ctx);
tcg_gen_ext16u_i32(tcg_ctx, tmp3, tmp2);
gen_helper_vfp_fcvt_f16_to_f32(tcg_ctx, tmp3, tmp3, fpst, ahp);
neon_store_reg(s, a->vd, 2, tmp3);
tcg_gen_shri_i32(tcg_ctx, tmp2, tmp2, 16);
gen_helper_vfp_fcvt_f16_to_f32(tcg_ctx, tmp2, tmp2, fpst, ahp);
neon_store_reg(s, a->vd, 3, tmp2);
tcg_temp_free_i32(tcg_ctx, ahp);
tcg_temp_free_ptr(tcg_ctx, fpst);
return true;
}
static bool do_2misc_vec(DisasContext *s, arg_2misc *a, GVecGen2Fn *fn)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
int vec_size = a->q ? 16 : 8;
int rd_ofs = neon_reg_offset(a->vd, 0);
int rm_ofs = neon_reg_offset(a->vm, 0);
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if (a->size == 3) {
return false;
}
if ((a->vd | a->vm) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
fn(tcg_ctx, a->size, rd_ofs, rm_ofs, vec_size, vec_size);
return true;
}
#define DO_2MISC_VEC(INSN, FN) \
static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
{ \
return do_2misc_vec(s, a, FN); \
}
DO_2MISC_VEC(VNEG, tcg_gen_gvec_neg)
DO_2MISC_VEC(VABS, tcg_gen_gvec_abs)
DO_2MISC_VEC(VCEQ0, gen_gvec_ceq0)
DO_2MISC_VEC(VCGT0, gen_gvec_cgt0)
DO_2MISC_VEC(VCLE0, gen_gvec_cle0)
DO_2MISC_VEC(VCGE0, gen_gvec_cge0)
DO_2MISC_VEC(VCLT0, gen_gvec_clt0)
static bool trans_VMVN(DisasContext *s, arg_2misc *a)
{
if (a->size != 0) {
return false;
}
return do_2misc_vec(s, a, tcg_gen_gvec_not);
}
#define WRAP_2M_3_OOL_FN(WRAPNAME, FUNC, DATA) \
static void WRAPNAME(TCGContext *s, unsigned vece, uint32_t rd_ofs, \
uint32_t rm_ofs, uint32_t oprsz, \
uint32_t maxsz) \
{ \
tcg_gen_gvec_3_ool(s, rd_ofs, rd_ofs, rm_ofs, oprsz, maxsz, \
DATA, FUNC); \
}
#define WRAP_2M_2_OOL_FN(WRAPNAME, FUNC, DATA) \
static void WRAPNAME(TCGContext *s, unsigned vece, uint32_t rd_ofs, \
uint32_t rm_ofs, uint32_t oprsz, \
uint32_t maxsz) \
{ \
tcg_gen_gvec_2_ool(s, rd_ofs, rm_ofs, oprsz, maxsz, DATA, FUNC); \
}
WRAP_2M_3_OOL_FN(gen_AESE, gen_helper_crypto_aese, 0)
WRAP_2M_3_OOL_FN(gen_AESD, gen_helper_crypto_aese, 1)
WRAP_2M_2_OOL_FN(gen_AESMC, gen_helper_crypto_aesmc, 0)
WRAP_2M_2_OOL_FN(gen_AESIMC, gen_helper_crypto_aesmc, 1)
WRAP_2M_2_OOL_FN(gen_SHA1H, gen_helper_crypto_sha1h, 0)
WRAP_2M_2_OOL_FN(gen_SHA1SU1, gen_helper_crypto_sha1su1, 0)
WRAP_2M_2_OOL_FN(gen_SHA256SU0, gen_helper_crypto_sha256su0, 0)
#define DO_2M_CRYPTO(INSN, FEATURE, SIZE) \
static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
{ \
if (!dc_isar_feature(FEATURE, s) || a->size != SIZE) { \
return false; \
} \
return do_2misc_vec(s, a, gen_##INSN); \
}
DO_2M_CRYPTO(AESE, aa32_aes, 0)
DO_2M_CRYPTO(AESD, aa32_aes, 0)
DO_2M_CRYPTO(AESMC, aa32_aes, 0)
DO_2M_CRYPTO(AESIMC, aa32_aes, 0)
DO_2M_CRYPTO(SHA1H, aa32_sha1, 2)
DO_2M_CRYPTO(SHA1SU1, aa32_sha1, 2)
DO_2M_CRYPTO(SHA256SU0, aa32_sha2, 2)
static bool do_2misc(DisasContext *s, arg_2misc *a, NeonGenOneOpFn *fn)
{
int pass;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
/* Handle a 2-reg-misc operation by iterating 32 bits at a time */
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if (!fn) {
return false;
}
if ((a->vd | a->vm) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
TCGv_i32 tmp = neon_load_reg(s, a->vm, pass);
fn(tcg_ctx, tmp, tmp);
neon_store_reg(s, a->vd, pass, tmp);
}
return true;
}
static bool trans_VREV32(DisasContext *s, arg_2misc *a)
{
static NeonGenOneOpFn * const fn[] = {
tcg_gen_bswap32_i32,
gen_swap_half,
NULL,
NULL,
};
return do_2misc(s, a, fn[a->size]);
}
static bool trans_VREV16(DisasContext *s, arg_2misc *a)
{
if (a->size != 0) {
return false;
}
return do_2misc(s, a, gen_rev16);
}
static bool trans_VCLS(DisasContext *s, arg_2misc *a)
{
static NeonGenOneOpFn * const fn[] = {
gen_helper_neon_cls_s8,
gen_helper_neon_cls_s16,
gen_helper_neon_cls_s32,
NULL,
};
return do_2misc(s, a, fn[a->size]);
}
static void do_VCLZ_32(TCGContext *s, TCGv_i32 rd, TCGv_i32 rm)
{
tcg_gen_clzi_i32(s, rd, rm, 32);
}
static bool trans_VCLZ(DisasContext *s, arg_2misc *a)
{
static NeonGenOneOpFn * const fn[] = {
gen_helper_neon_clz_u8,
gen_helper_neon_clz_u16,
do_VCLZ_32,
NULL,
};
return do_2misc(s, a, fn[a->size]);
}
static bool trans_VCNT(DisasContext *s, arg_2misc *a)
{
if (a->size != 0) {
return false;
}
return do_2misc(s, a, gen_helper_neon_cnt_u8);
}
static bool trans_VABS_F(DisasContext *s, arg_2misc *a)
{
if (a->size != 2) {
return false;
}
/* TODO: FP16 : size == 1 */
return do_2misc(s, a, gen_helper_vfp_abss);
}
static bool trans_VNEG_F(DisasContext *s, arg_2misc *a)
{
if (a->size != 2) {
return false;
}
/* TODO: FP16 : size == 1 */
return do_2misc(s, a, gen_helper_vfp_negs);
}
static bool trans_VRECPE(DisasContext *s, arg_2misc *a)
{
if (a->size != 2) {
return false;
}
return do_2misc(s, a, gen_helper_recpe_u32);
}
static bool trans_VRSQRTE(DisasContext *s, arg_2misc *a)
{
if (a->size != 2) {
return false;
}
return do_2misc(s, a, gen_helper_rsqrte_u32);
}
#define WRAP_1OP_ENV_FN(WRAPNAME, FUNC) \
static void WRAPNAME(TCGContext *s, TCGv_i32 d, TCGv_i32 m) \
{ \
FUNC(s, d, s->cpu_env, m); \
}
WRAP_1OP_ENV_FN(gen_VQABS_s8, gen_helper_neon_qabs_s8)
WRAP_1OP_ENV_FN(gen_VQABS_s16, gen_helper_neon_qabs_s16)
WRAP_1OP_ENV_FN(gen_VQABS_s32, gen_helper_neon_qabs_s32)
WRAP_1OP_ENV_FN(gen_VQNEG_s8, gen_helper_neon_qneg_s8)
WRAP_1OP_ENV_FN(gen_VQNEG_s16, gen_helper_neon_qneg_s16)
WRAP_1OP_ENV_FN(gen_VQNEG_s32, gen_helper_neon_qneg_s32)
static bool trans_VQABS(DisasContext *s, arg_2misc *a)
{
static NeonGenOneOpFn * const fn[] = {
gen_VQABS_s8,
gen_VQABS_s16,
gen_VQABS_s32,
NULL,
};
return do_2misc(s, a, fn[a->size]);
}
static bool trans_VQNEG(DisasContext *s, arg_2misc *a)
{
static NeonGenOneOpFn * const fn[] = {
gen_VQNEG_s8,
gen_VQNEG_s16,
gen_VQNEG_s32,
NULL,
};
return do_2misc(s, a, fn[a->size]);
}
static bool do_2misc_fp(DisasContext *s, arg_2misc *a,
NeonGenOneSingleOpFn *fn)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
int pass;
TCGv_ptr fpst;
/* Handle a 2-reg-misc operation by iterating 32 bits at a time */
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if (a->size != 2) {
/* TODO: FP16 will be the size == 1 case */
return false;
}
if ((a->vd | a->vm) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
fpst = fpstatus_ptr(tcg_ctx, FPST_STD);
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
TCGv_i32 tmp = neon_load_reg(s, a->vm, pass);
fn(tcg_ctx, tmp, tmp, fpst);
neon_store_reg(s, a->vd, pass, tmp);
}
tcg_temp_free_ptr(tcg_ctx, fpst);
return true;
}
#define DO_2MISC_FP(INSN, FUNC) \
static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
{ \
return do_2misc_fp(s, a, FUNC); \
}
DO_2MISC_FP(VRECPE_F, gen_helper_recpe_f32)
DO_2MISC_FP(VRSQRTE_F, gen_helper_rsqrte_f32)
DO_2MISC_FP(VCVT_FS, gen_helper_vfp_sitos)
DO_2MISC_FP(VCVT_FU, gen_helper_vfp_uitos)
DO_2MISC_FP(VCVT_SF, gen_helper_vfp_tosizs)
DO_2MISC_FP(VCVT_UF, gen_helper_vfp_touizs)
static bool trans_VRINTX(DisasContext *s, arg_2misc *a)
{
if (!arm_dc_feature(s, ARM_FEATURE_V8)) {
return false;
}
return do_2misc_fp(s, a, gen_helper_rints_exact);
}
#define WRAP_FP_CMP0_FWD(WRAPNAME, FUNC) \
static void WRAPNAME(TCGContext *s, TCGv_i32 d, TCGv_i32 m, TCGv_ptr fpst) \
{ \
TCGv_i32 zero = tcg_const_i32(s, 0); \
FUNC(s, d, m, zero, fpst); \
tcg_temp_free_i32(s, zero); \
}
#define WRAP_FP_CMP0_REV(WRAPNAME, FUNC) \
static void WRAPNAME(TCGContext *s, TCGv_i32 d, TCGv_i32 m, TCGv_ptr fpst) \
{ \
TCGv_i32 zero = tcg_const_i32(s, 0); \
FUNC(s, d, zero, m, fpst); \
tcg_temp_free_i32(s, zero); \
}
#define DO_FP_CMP0(INSN, FUNC, REV) \
WRAP_FP_CMP0_##REV(gen_##INSN, FUNC) \
static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
{ \
return do_2misc_fp(s, a, gen_##INSN); \
}
DO_FP_CMP0(VCGT0_F, gen_helper_neon_cgt_f32, FWD)
DO_FP_CMP0(VCGE0_F, gen_helper_neon_cge_f32, FWD)
DO_FP_CMP0(VCEQ0_F, gen_helper_neon_ceq_f32, FWD)
DO_FP_CMP0(VCLE0_F, gen_helper_neon_cge_f32, REV)
DO_FP_CMP0(VCLT0_F, gen_helper_neon_cgt_f32, REV)
static bool do_vrint(DisasContext *s, arg_2misc *a, int rmode)
{
/*
* Handle a VRINT* operation by iterating 32 bits at a time,
* with a specified rounding mode in operation.
*/
int pass;
TCGv_ptr fpst;
TCGv_i32 tcg_rmode;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON) ||
!arm_dc_feature(s, ARM_FEATURE_V8)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if (a->size != 2) {
/* TODO: FP16 will be the size == 1 case */
return false;
}
if ((a->vd | a->vm) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
fpst = fpstatus_ptr(tcg_ctx, FPST_STD);
tcg_rmode = tcg_const_i32(tcg_ctx, arm_rmode_to_sf(rmode));
gen_helper_set_neon_rmode(tcg_ctx, tcg_rmode, tcg_rmode, tcg_ctx->cpu_env);
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
TCGv_i32 tmp = neon_load_reg(s, a->vm, pass);
gen_helper_rints(tcg_ctx, tmp, tmp, fpst);
neon_store_reg(s, a->vd, pass, tmp);
}
gen_helper_set_neon_rmode(tcg_ctx, tcg_rmode, tcg_rmode, tcg_ctx->cpu_env);
tcg_temp_free_i32(tcg_ctx, tcg_rmode);
tcg_temp_free_ptr(tcg_ctx, fpst);
return true;
}
#define DO_VRINT(INSN, RMODE) \
static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
{ \
return do_vrint(s, a, RMODE); \
}
DO_VRINT(VRINTN, FPROUNDING_TIEEVEN)
DO_VRINT(VRINTA, FPROUNDING_TIEAWAY)
DO_VRINT(VRINTZ, FPROUNDING_ZERO)
DO_VRINT(VRINTM, FPROUNDING_NEGINF)
DO_VRINT(VRINTP, FPROUNDING_POSINF)
static bool do_vcvt(DisasContext *s, arg_2misc *a, int rmode, bool is_signed)
{
/*
* Handle a VCVT* operation by iterating 32 bits at a time,
* with a specified rounding mode in operation.
*/
int pass;
TCGv_ptr fpst;
TCGv_i32 tcg_rmode, tcg_shift;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON) ||
!arm_dc_feature(s, ARM_FEATURE_V8)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if (a->size != 2) {
/* TODO: FP16 will be the size == 1 case */
return false;
}
if ((a->vd | a->vm) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
fpst = fpstatus_ptr(tcg_ctx, FPST_STD);
tcg_shift = tcg_const_i32(tcg_ctx, 0);
tcg_rmode = tcg_const_i32(tcg_ctx, arm_rmode_to_sf(rmode));
gen_helper_set_neon_rmode(tcg_ctx, tcg_rmode, tcg_rmode, tcg_ctx->cpu_env);
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
TCGv_i32 tmp = neon_load_reg(s, a->vm, pass);
if (is_signed) {
gen_helper_vfp_tosls(tcg_ctx, tmp, tmp, tcg_shift, fpst);
} else {
gen_helper_vfp_touls(tcg_ctx, tmp, tmp, tcg_shift, fpst);
}
neon_store_reg(s, a->vd, pass, tmp);
}
gen_helper_set_neon_rmode(tcg_ctx, tcg_rmode, tcg_rmode, tcg_ctx->cpu_env);
tcg_temp_free_i32(tcg_ctx, tcg_rmode);
tcg_temp_free_i32(tcg_ctx, tcg_shift);
tcg_temp_free_ptr(tcg_ctx, fpst);
return true;
}
#define DO_VCVT(INSN, RMODE, SIGNED) \
static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
{ \
return do_vcvt(s, a, RMODE, SIGNED); \
}
DO_VCVT(VCVTAU, FPROUNDING_TIEAWAY, false)
DO_VCVT(VCVTAS, FPROUNDING_TIEAWAY, true)
DO_VCVT(VCVTNU, FPROUNDING_TIEEVEN, false)
DO_VCVT(VCVTNS, FPROUNDING_TIEEVEN, true)
DO_VCVT(VCVTPU, FPROUNDING_POSINF, false)
DO_VCVT(VCVTPS, FPROUNDING_POSINF, true)
DO_VCVT(VCVTMU, FPROUNDING_NEGINF, false)
DO_VCVT(VCVTMS, FPROUNDING_NEGINF, true)
static bool trans_VSWP(DisasContext *s, arg_2misc *a)
{
TCGv_i64 rm, rd;
int pass;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if (a->size != 0) {
return false;
}
if ((a->vd | a->vm) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
rm = tcg_temp_new_i64(tcg_ctx);
rd = tcg_temp_new_i64(tcg_ctx);
for (pass = 0; pass < (a->q ? 2 : 1); pass++) {
neon_load_reg64(s, rm, a->vm + pass);
neon_load_reg64(s, rd, a->vd + pass);
neon_store_reg64(s, rm, a->vd + pass);
neon_store_reg64(s, rd, a->vm + pass);
}
tcg_temp_free_i64(tcg_ctx, rm);
tcg_temp_free_i64(tcg_ctx, rd);
return true;
}
static void gen_neon_trn_u8(TCGContext *s, TCGv_i32 t0, TCGv_i32 t1)
{
TCGv_i32 rd, tmp;
rd = tcg_temp_new_i32(s);
tmp = tcg_temp_new_i32(s);
tcg_gen_shli_i32(s, rd, t0, 8);
tcg_gen_andi_i32(s, rd, rd, 0xff00ff00);
tcg_gen_andi_i32(s, tmp, t1, 0x00ff00ff);
tcg_gen_or_i32(s, rd, rd, tmp);
tcg_gen_shri_i32(s, t1, t1, 8);
tcg_gen_andi_i32(s, t1, t1, 0x00ff00ff);
tcg_gen_andi_i32(s, tmp, t0, 0xff00ff00);
tcg_gen_or_i32(s, t1, t1, tmp);
tcg_gen_mov_i32(s, t0, rd);
tcg_temp_free_i32(s, tmp);
tcg_temp_free_i32(s, rd);
}
static void gen_neon_trn_u16(TCGContext *s, TCGv_i32 t0, TCGv_i32 t1)
{
TCGv_i32 rd, tmp;
rd = tcg_temp_new_i32(s);
tmp = tcg_temp_new_i32(s);
tcg_gen_shli_i32(s, rd, t0, 16);
tcg_gen_andi_i32(s, tmp, t1, 0xffff);
tcg_gen_or_i32(s, rd, rd, tmp);
tcg_gen_shri_i32(s, t1, t1, 16);
tcg_gen_andi_i32(s, tmp, t0, 0xffff0000);
tcg_gen_or_i32(s, t1, t1, tmp);
tcg_gen_mov_i32(s, t0, rd);
tcg_temp_free_i32(s, tmp);
tcg_temp_free_i32(s, rd);
}
static bool trans_VTRN(DisasContext *s, arg_2misc *a)
{
TCGv_i32 tmp, tmp2;
int pass;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
/* UNDEF accesses to D16-D31 if they don't exist. */
if (!dc_isar_feature(aa32_simd_r32, s) &&
((a->vd | a->vm) & 0x10)) {
return false;
}
if ((a->vd | a->vm) & a->q) {
return false;
}
if (a->size == 3) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
if (a->size == 2) {
for (pass = 0; pass < (a->q ? 4 : 2); pass += 2) {
tmp = neon_load_reg(s, a->vm, pass);
tmp2 = neon_load_reg(s, a->vd, pass + 1);
neon_store_reg(s, a->vm, pass, tmp2);
neon_store_reg(s, a->vd, pass + 1, tmp);
}
} else {
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
tmp = neon_load_reg(s, a->vm, pass);
tmp2 = neon_load_reg(s, a->vd, pass);
if (a->size == 0) {
gen_neon_trn_u8(tcg_ctx, tmp, tmp2);
} else {
gen_neon_trn_u16(tcg_ctx, tmp, tmp2);
}
neon_store_reg(s, a->vm, pass, tmp2);
neon_store_reg(s, a->vd, pass, tmp);
}
}
return true;
}
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