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qemu-patch-raspberry4/target/arm/translate-neon.c
Peter Maydell 1e35cd9166 target/arm: Implement MVE VADD (floating-point) 
Implement the MVE VADD (floating-point) insn.  Handling of this is
similar to the 2-operand integer insns, except that we must take care
to only update the floating point exception status if the least
significant bit of the predicate mask for each element is active.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-09-01 11:08:16 +01:00

4065 lines
123 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 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "tcg/tcg-op.h"
#include "tcg/tcg-op-gvec.h"
#include "exec/exec-all.h"
#include "exec/gen-icount.h"
#include "translate.h"
#include "translate-a32.h"
/* Include the generated Neon decoder */
#include "decode-neon-dp.c.inc"
#include "decode-neon-ls.c.inc"
#include "decode-neon-shared.c.inc"
static TCGv_ptr vfp_reg_ptr(bool dp, int reg)
{
TCGv_ptr ret = tcg_temp_new_ptr();
tcg_gen_addi_ptr(ret, cpu_env, vfp_reg_offset(dp, reg));
return ret;
}
static void neon_load_element(TCGv_i32 var, int reg, int ele, MemOp mop)
{
long offset = neon_element_offset(reg, ele, mop & MO_SIZE);
switch (mop) {
case MO_UB:
tcg_gen_ld8u_i32(var, cpu_env, offset);
break;
case MO_UW:
tcg_gen_ld16u_i32(var, cpu_env, offset);
break;
case MO_UL:
tcg_gen_ld_i32(var, cpu_env, offset);
break;
default:
g_assert_not_reached();
}
}
static void neon_load_element64(TCGv_i64 var, int reg, int ele, MemOp mop)
{
long offset = neon_element_offset(reg, ele, mop & MO_SIZE);
switch (mop) {
case MO_UB:
tcg_gen_ld8u_i64(var, cpu_env, offset);
break;
case MO_UW:
tcg_gen_ld16u_i64(var, cpu_env, offset);
break;
case MO_UL:
tcg_gen_ld32u_i64(var, cpu_env, offset);
break;
case MO_Q:
tcg_gen_ld_i64(var, cpu_env, offset);
break;
default:
g_assert_not_reached();
}
}
static void neon_store_element(int reg, int ele, MemOp size, TCGv_i32 var)
{
long offset = neon_element_offset(reg, ele, size);
switch (size) {
case MO_8:
tcg_gen_st8_i32(var, cpu_env, offset);
break;
case MO_16:
tcg_gen_st16_i32(var, cpu_env, offset);
break;
case MO_32:
tcg_gen_st_i32(var, cpu_env, offset);
break;
default:
g_assert_not_reached();
}
}
static void neon_store_element64(int reg, int ele, MemOp size, TCGv_i64 var)
{
long offset = neon_element_offset(reg, ele, size);
switch (size) {
case MO_8:
tcg_gen_st8_i64(var, cpu_env, offset);
break;
case MO_16:
tcg_gen_st16_i64(var, cpu_env, offset);
break;
case MO_32:
tcg_gen_st32_i64(var, cpu_env, offset);
break;
case MO_64:
tcg_gen_st_i64(var, cpu_env, offset);
break;
default:
g_assert_not_reached();
}
}
static bool do_neon_ddda(DisasContext *s, int q, int vd, int vn, int vm,
int data, gen_helper_gvec_4 *fn_gvec)
{
/* UNDEF accesses to D16-D31 if they don't exist. */
if (((vd | vn | vm) & 0x10) && !dc_isar_feature(aa32_simd_r32, s)) {
return false;
}
/*
* UNDEF accesses to odd registers for each bit of Q.
* Q will be 0b111 for all Q-reg instructions, otherwise
* when we have mixed Q- and D-reg inputs.
*/
if (((vd & 1) * 4 | (vn & 1) * 2 | (vm & 1)) & q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
int opr_sz = q ? 16 : 8;
tcg_gen_gvec_4_ool(vfp_reg_offset(1, vd),
vfp_reg_offset(1, vn),
vfp_reg_offset(1, vm),
vfp_reg_offset(1, vd),
opr_sz, opr_sz, data, fn_gvec);
return true;
}
static bool do_neon_ddda_fpst(DisasContext *s, int q, int vd, int vn, int vm,
int data, ARMFPStatusFlavour fp_flavour,
gen_helper_gvec_4_ptr *fn_gvec_ptr)
{
/* UNDEF accesses to D16-D31 if they don't exist. */
if (((vd | vn | vm) & 0x10) && !dc_isar_feature(aa32_simd_r32, s)) {
return false;
}
/*
* UNDEF accesses to odd registers for each bit of Q.
* Q will be 0b111 for all Q-reg instructions, otherwise
* when we have mixed Q- and D-reg inputs.
*/
if (((vd & 1) * 4 | (vn & 1) * 2 | (vm & 1)) & q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
int opr_sz = q ? 16 : 8;
TCGv_ptr fpst = fpstatus_ptr(fp_flavour);
tcg_gen_gvec_4_ptr(vfp_reg_offset(1, vd),
vfp_reg_offset(1, vn),
vfp_reg_offset(1, vm),
vfp_reg_offset(1, vd),
fpst, opr_sz, opr_sz, data, fn_gvec_ptr);
tcg_temp_free_ptr(fpst);
return true;
}
static bool trans_VCMLA(DisasContext *s, arg_VCMLA *a)
{
if (!dc_isar_feature(aa32_vcma, s)) {
return false;
}
if (a->size == MO_16) {
if (!dc_isar_feature(aa32_fp16_arith, s)) {
return false;
}
return do_neon_ddda_fpst(s, a->q * 7, a->vd, a->vn, a->vm, a->rot,
FPST_STD_F16, gen_helper_gvec_fcmlah);
}
return do_neon_ddda_fpst(s, a->q * 7, a->vd, a->vn, a->vm, a->rot,
FPST_STD, gen_helper_gvec_fcmlas);
}
static bool trans_VCADD(DisasContext *s, arg_VCADD *a)
{
int opr_sz;
TCGv_ptr fpst;
gen_helper_gvec_3_ptr *fn_gvec_ptr;
if (!dc_isar_feature(aa32_vcma, s)
|| (a->size == MO_16 && !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(a->size == MO_16 ? FPST_STD_F16 : FPST_STD);
fn_gvec_ptr = (a->size == MO_16) ?
gen_helper_gvec_fcaddh : gen_helper_gvec_fcadds;
tcg_gen_gvec_3_ptr(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(fpst);
return true;
}
static bool trans_VSDOT(DisasContext *s, arg_VSDOT *a)
{
if (!dc_isar_feature(aa32_dp, s)) {
return false;
}
return do_neon_ddda(s, a->q * 7, a->vd, a->vn, a->vm, 0,
gen_helper_gvec_sdot_b);
}
static bool trans_VUDOT(DisasContext *s, arg_VUDOT *a)
{
if (!dc_isar_feature(aa32_dp, s)) {
return false;
}
return do_neon_ddda(s, a->q * 7, a->vd, a->vn, a->vm, 0,
gen_helper_gvec_udot_b);
}
static bool trans_VUSDOT(DisasContext *s, arg_VUSDOT *a)
{
if (!dc_isar_feature(aa32_i8mm, s)) {
return false;
}
return do_neon_ddda(s, a->q * 7, a->vd, a->vn, a->vm, 0,
gen_helper_gvec_usdot_b);
}
static bool trans_VDOT_b16(DisasContext *s, arg_VDOT_b16 *a)
{
if (!dc_isar_feature(aa32_bf16, s)) {
return false;
}
return do_neon_ddda(s, a->q * 7, a->vd, a->vn, a->vm, 0,
gen_helper_gvec_bfdot);
}
static bool trans_VFML(DisasContext *s, arg_VFML *a)
{
int opr_sz;
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(vfp_reg_offset(1, a->vd),
vfp_reg_offset(a->q, a->vn),
vfp_reg_offset(a->q, a->vm),
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)
{
int data = (a->index << 2) | a->rot;
if (!dc_isar_feature(aa32_vcma, s)) {
return false;
}
if (a->size == MO_16) {
if (!dc_isar_feature(aa32_fp16_arith, s)) {
return false;
}
return do_neon_ddda_fpst(s, a->q * 6, a->vd, a->vn, a->vm, data,
FPST_STD_F16, gen_helper_gvec_fcmlah_idx);
}
return do_neon_ddda_fpst(s, a->q * 6, a->vd, a->vn, a->vm, data,
FPST_STD, gen_helper_gvec_fcmlas_idx);
}
static bool trans_VSDOT_scalar(DisasContext *s, arg_VSDOT_scalar *a)
{
if (!dc_isar_feature(aa32_dp, s)) {
return false;
}
return do_neon_ddda(s, a->q * 6, a->vd, a->vn, a->vm, a->index,
gen_helper_gvec_sdot_idx_b);
}
static bool trans_VUDOT_scalar(DisasContext *s, arg_VUDOT_scalar *a)
{
if (!dc_isar_feature(aa32_dp, s)) {
return false;
}
return do_neon_ddda(s, a->q * 6, a->vd, a->vn, a->vm, a->index,
gen_helper_gvec_udot_idx_b);
}
static bool trans_VUSDOT_scalar(DisasContext *s, arg_VUSDOT_scalar *a)
{
if (!dc_isar_feature(aa32_i8mm, s)) {
return false;
}
return do_neon_ddda(s, a->q * 6, a->vd, a->vn, a->vm, a->index,
gen_helper_gvec_usdot_idx_b);
}
static bool trans_VSUDOT_scalar(DisasContext *s, arg_VSUDOT_scalar *a)
{
if (!dc_isar_feature(aa32_i8mm, s)) {
return false;
}
return do_neon_ddda(s, a->q * 6, a->vd, a->vn, a->vm, a->index,
gen_helper_gvec_sudot_idx_b);
}
static bool trans_VDOT_b16_scal(DisasContext *s, arg_VDOT_b16_scal *a)
{
if (!dc_isar_feature(aa32_bf16, s)) {
return false;
}
return do_neon_ddda(s, a->q * 6, a->vd, a->vn, a->vm, a->index,
gen_helper_gvec_bfdot_idx);
}
static bool trans_VFML_scalar(DisasContext *s, arg_VFML_scalar *a)
{
int opr_sz;
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(vfp_reg_offset(1, a->vd),
vfp_reg_offset(a->q, a->vn),
vfp_reg_offset(a->q, a->rm),
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)
{
if (rm != 15) {
TCGv_i32 base;
base = load_reg(s, rn);
if (rm == 13) {
tcg_gen_addi_i32(base, base, stride);
} else {
TCGv_i32 index;
index = load_reg(s, rm);
tcg_gen_add_i32(base, base, index);
tcg_temp_free_i32(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 mop, align, endian;
int mmu_idx = get_mem_index(s);
int size = a->size;
TCGv_i64 tmp64;
TCGv_i32 addr, tmp;
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. */
endian = s->be_data;
if (size == 0) {
endian = MO_LE;
}
/* Enforce alignment requested by the instruction */
if (a->align) {
align = pow2_align(a->align + 2); /* 4 ** a->align */
} else {
align = s->align_mem ? MO_ALIGN : 0;
}
/*
* Consecutive little-endian elements from a single register
* can be promoted to a larger little-endian operation.
*/
if (interleave == 1 && endian == MO_LE) {
/* Retain any natural alignment. */
if (align == MO_ALIGN) {
align = pow2_align(size);
}
size = 3;
}
tmp64 = tcg_temp_new_i64();
addr = tcg_temp_new_i32();
tmp = tcg_const_i32(1 << size);
load_reg_var(s, addr, a->rn);
mop = endian | size | align;
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_internal_i64(s, tmp64, addr, mmu_idx, mop);
neon_store_element64(tt, n, size, tmp64);
} else {
neon_load_element64(tmp64, tt, n, size);
gen_aa32_st_internal_i64(s, tmp64, addr, mmu_idx, mop);
}
tcg_gen_add_i32(addr, addr, tmp);
/* Subsequent memory operations inherit alignment */
mop &= ~MO_AMASK;
}
}
}
tcg_temp_free_i32(addr);
tcg_temp_free_i32(tmp);
tcg_temp_free_i64(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;
MemOp mop, align;
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;
}
align = 0;
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 = MO_32;
align = MO_ALIGN_16;
} else if (a->a) {
switch (nregs) {
case 1:
if (size == 0) {
return false;
}
align = MO_ALIGN;
break;
case 2:
align = pow2_align(size + 1);
break;
case 3:
return false;
case 4:
align = pow2_align(size + 2);
break;
default:
g_assert_not_reached();
}
}
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;
mop = size | align;
tmp = tcg_temp_new_i32();
addr = tcg_temp_new_i32();
load_reg_var(s, addr, a->rn);
for (reg = 0; reg < nregs; reg++) {
gen_aa32_ld_i32(s, tmp, addr, get_mem_index(s), mop);
if ((vd & 1) && vec_size == 16) {
/*
* We cannot write 16 bytes at once because the
* destination is unaligned.
*/
tcg_gen_gvec_dup_i32(size, neon_full_reg_offset(vd),
8, 8, tmp);
tcg_gen_gvec_mov(0, neon_full_reg_offset(vd + 1),
neon_full_reg_offset(vd), 8, 8);
} else {
tcg_gen_gvec_dup_i32(size, neon_full_reg_offset(vd),
vec_size, vec_size, tmp);
}
tcg_gen_addi_i32(addr, addr, 1 << size);
vd += stride;
/* Subsequent memory operations inherit alignment */
mop &= ~MO_AMASK;
}
tcg_temp_free_i32(tmp);
tcg_temp_free_i32(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;
MemOp mop;
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 == 1 || a->align == 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) {
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;
}
/* Pick up SCTLR settings */
mop = finalize_memop(s, a->size);
if (a->align) {
MemOp align_op;
switch (nregs) {
case 1:
/* For VLD1, use natural alignment. */
align_op = MO_ALIGN;
break;
case 2:
/* For VLD2, use double alignment. */
align_op = pow2_align(a->size + 1);
break;
case 4:
if (a->size == MO_32) {
/*
* For VLD4.32, align = 1 is double alignment, align = 2 is
* quad alignment; align = 3 is rejected above.
*/
align_op = pow2_align(a->size + a->align);
} else {
/* For VLD4.8 and VLD.16, we want quad alignment. */
align_op = pow2_align(a->size + 2);
}
break;
default:
/* For VLD3, the alignment field is zero and rejected above. */
g_assert_not_reached();
}
mop = (mop & ~MO_AMASK) | align_op;
}
tmp = tcg_temp_new_i32();
addr = tcg_temp_new_i32();
load_reg_var(s, addr, a->rn);
for (reg = 0; reg < nregs; reg++) {
if (a->l) {
gen_aa32_ld_internal_i32(s, tmp, addr, get_mem_index(s), mop);
neon_store_element(vd, a->reg_idx, a->size, tmp);
} else { /* Store */
neon_load_element(tmp, vd, a->reg_idx, a->size);
gen_aa32_st_internal_i32(s, tmp, addr, get_mem_index(s), mop);
}
vd += a->stride;
tcg_gen_addi_i32(addr, addr, 1 << a->size);
/* Subsequent memory operations inherit alignment */
mop &= ~MO_AMASK;
}
tcg_temp_free_i32(addr);
tcg_temp_free_i32(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_full_reg_offset(a->vd);
int rn_ofs = neon_full_reg_offset(a->vn);
int rm_ofs = neon_full_reg_offset(a->vm);
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(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(unsigned vece, uint32_t rd_ofs, \
uint32_t rn_ofs, uint32_t rm_ofs, \
uint32_t oprsz, uint32_t maxsz) \
{ \
tcg_gen_gvec_bitsel(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(unsigned vece, uint32_t rd_ofs, \
uint32_t rn_ofs, uint32_t rm_ofs, \
uint32_t oprsz, uint32_t maxsz) \
{ \
tcg_gen_gvec_cmp(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(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(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(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(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(TCGv_i64 d, TCGv_i64 n, TCGv_i64 m) \
{ \
FUNC(d, 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(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(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(TCGv_i32 d, TCGv_i32 n, TCGv_i32 m) \
{ \
FUNC(d, 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(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(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;
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 = tcg_temp_new_i32();
tmp2 = tcg_temp_new_i32();
tmp3 = tcg_temp_new_i32();
read_neon_element32(tmp, a->vn, 0, MO_32);
read_neon_element32(tmp2, a->vn, 1, MO_32);
fn(tmp, tmp, tmp2);
read_neon_element32(tmp3, a->vm, 0, MO_32);
read_neon_element32(tmp2, a->vm, 1, MO_32);
fn(tmp3, tmp3, tmp2);
write_neon_element32(tmp, a->vd, 0, MO_32);
write_neon_element32(tmp3, a->vd, 1, MO_32);
tcg_temp_free_i32(tmp);
tcg_temp_free_i32(tmp2);
tcg_temp_free_i32(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(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(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)
#define WRAP_FP_GVEC(WRAPNAME, FPST, FUNC) \
static void WRAPNAME(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(FPST); \
tcg_gen_gvec_3_ptr(rd_ofs, rn_ofs, rm_ofs, fpst, \
oprsz, maxsz, 0, FUNC); \
tcg_temp_free_ptr(fpst); \
}
#define DO_3S_FP_GVEC(INSN,SFUNC,HFUNC) \
WRAP_FP_GVEC(gen_##INSN##_fp32_3s, FPST_STD, SFUNC) \
WRAP_FP_GVEC(gen_##INSN##_fp16_3s, FPST_STD_F16, HFUNC) \
static bool trans_##INSN##_fp_3s(DisasContext *s, arg_3same *a) \
{ \
if (a->size == MO_16) { \
if (!dc_isar_feature(aa32_fp16_arith, s)) { \
return false; \
} \
return do_3same(s, a, gen_##INSN##_fp16_3s); \
} \
return do_3same(s, a, gen_##INSN##_fp32_3s); \
}
DO_3S_FP_GVEC(VADD, gen_helper_gvec_fadd_s, gen_helper_gvec_fadd_h)
DO_3S_FP_GVEC(VSUB, gen_helper_gvec_fsub_s, gen_helper_gvec_fsub_h)
DO_3S_FP_GVEC(VABD, gen_helper_gvec_fabd_s, gen_helper_gvec_fabd_h)
DO_3S_FP_GVEC(VMUL, gen_helper_gvec_fmul_s, gen_helper_gvec_fmul_h)
DO_3S_FP_GVEC(VCEQ, gen_helper_gvec_fceq_s, gen_helper_gvec_fceq_h)
DO_3S_FP_GVEC(VCGE, gen_helper_gvec_fcge_s, gen_helper_gvec_fcge_h)
DO_3S_FP_GVEC(VCGT, gen_helper_gvec_fcgt_s, gen_helper_gvec_fcgt_h)
DO_3S_FP_GVEC(VACGE, gen_helper_gvec_facge_s, gen_helper_gvec_facge_h)
DO_3S_FP_GVEC(VACGT, gen_helper_gvec_facgt_s, gen_helper_gvec_facgt_h)
DO_3S_FP_GVEC(VMAX, gen_helper_gvec_fmax_s, gen_helper_gvec_fmax_h)
DO_3S_FP_GVEC(VMIN, gen_helper_gvec_fmin_s, gen_helper_gvec_fmin_h)
DO_3S_FP_GVEC(VMLA, gen_helper_gvec_fmla_s, gen_helper_gvec_fmla_h)
DO_3S_FP_GVEC(VMLS, gen_helper_gvec_fmls_s, gen_helper_gvec_fmls_h)
DO_3S_FP_GVEC(VFMA, gen_helper_gvec_vfma_s, gen_helper_gvec_vfma_h)
DO_3S_FP_GVEC(VFMS, gen_helper_gvec_vfms_s, gen_helper_gvec_vfms_h)
DO_3S_FP_GVEC(VRECPS, gen_helper_gvec_recps_nf_s, gen_helper_gvec_recps_nf_h)
DO_3S_FP_GVEC(VRSQRTS, gen_helper_gvec_rsqrts_nf_s, gen_helper_gvec_rsqrts_nf_h)
WRAP_FP_GVEC(gen_VMAXNM_fp32_3s, FPST_STD, gen_helper_gvec_fmaxnum_s)
WRAP_FP_GVEC(gen_VMAXNM_fp16_3s, FPST_STD_F16, gen_helper_gvec_fmaxnum_h)
WRAP_FP_GVEC(gen_VMINNM_fp32_3s, FPST_STD, gen_helper_gvec_fminnum_s)
WRAP_FP_GVEC(gen_VMINNM_fp16_3s, FPST_STD_F16, gen_helper_gvec_fminnum_h)
static bool trans_VMAXNM_fp_3s(DisasContext *s, arg_3same *a)
{
if (!arm_dc_feature(s, ARM_FEATURE_V8)) {
return false;
}
if (a->size == MO_16) {
if (!dc_isar_feature(aa32_fp16_arith, s)) {
return false;
}
return do_3same(s, a, gen_VMAXNM_fp16_3s);
}
return do_3same(s, a, gen_VMAXNM_fp32_3s);
}
static bool trans_VMINNM_fp_3s(DisasContext *s, arg_3same *a)
{
if (!arm_dc_feature(s, ARM_FEATURE_V8)) {
return false;
}
if (a->size == MO_16) {
if (!dc_isar_feature(aa32_fp16_arith, s)) {
return false;
}
return do_3same(s, a, gen_VMINNM_fp16_3s);
}
return do_3same(s, a, gen_VMINNM_fp32_3s);
}
static bool do_3same_fp_pair(DisasContext *s, arg_3same *a,
gen_helper_gvec_3_ptr *fn)
{
/* FP pairwise operations */
TCGv_ptr fpstatus;
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 */
fpstatus = fpstatus_ptr(a->size == MO_16 ? FPST_STD_F16 : FPST_STD);
tcg_gen_gvec_3_ptr(vfp_reg_offset(1, a->vd),
vfp_reg_offset(1, a->vn),
vfp_reg_offset(1, a->vm),
fpstatus, 8, 8, 0, fn);
tcg_temp_free_ptr(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_PAIR(INSN,FUNC) \
static bool trans_##INSN##_fp_3s(DisasContext *s, arg_3same *a) \
{ \
if (a->size == MO_16) { \
if (!dc_isar_feature(aa32_fp16_arith, s)) { \
return false; \
} \
return do_3same_fp_pair(s, a, FUNC##h); \
} \
return do_3same_fp_pair(s, a, FUNC##s); \
}
DO_3S_FP_PAIR(VPADD, gen_helper_neon_padd)
DO_3S_FP_PAIR(VPMAX, gen_helper_neon_pmax)
DO_3S_FP_PAIR(VPMIN, gen_helper_neon_pmin)
static bool do_vector_2sh(DisasContext *s, arg_2reg_shift *a, GVecGen2iFn *fn)
{
/* Handle a 2-reg-shift insn which can be vectorized. */
int vec_size = a->q ? 16 : 8;
int rd_ofs = neon_full_reg_offset(a->vd);
int rm_ofs = neon_full_reg_offset(a->vm);
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(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(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs,
int64_t shift, uint32_t oprsz, uint32_t maxsz)
{
tcg_gen_gvec_dup_imm(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.
*/
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(dup_const(a->size, a->shift));
for (pass = 0; pass < a->q + 1; pass++) {
TCGv_i64 tmp = tcg_temp_new_i64();
read_neon_element64(tmp, a->vm, pass, MO_64);
fn(tmp, cpu_env, tmp, constimm);
write_neon_element64(tmp, a->vd, pass, MO_64);
tcg_temp_free_i64(tmp);
}
tcg_temp_free_i64(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.
*/
TCGv_i32 constimm, tmp;
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(dup_const(a->size, a->shift));
tmp = tcg_temp_new_i32();
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
read_neon_element32(tmp, a->vm, pass, MO_32);
fn(tmp, cpu_env, tmp, constimm);
write_neon_element32(tmp, a->vd, pass, MO_32);
}
tcg_temp_free_i32(tmp);
tcg_temp_free_i32(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 */
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(-a->shift);
rm1 = tcg_temp_new_i64();
rm2 = tcg_temp_new_i64();
rd = tcg_temp_new_i32();
/* Load both inputs first to avoid potential overwrite if rm == rd */
read_neon_element64(rm1, a->vm, 0, MO_64);
read_neon_element64(rm2, a->vm, 1, MO_64);
shiftfn(rm1, rm1, constimm);
narrowfn(rd, cpu_env, rm1);
write_neon_element32(rd, a->vd, 0, MO_32);
shiftfn(rm2, rm2, constimm);
narrowfn(rd, cpu_env, rm2);
write_neon_element32(rd, a->vd, 1, MO_32);
tcg_temp_free_i32(rd);
tcg_temp_free_i64(rm1);
tcg_temp_free_i64(rm2);
tcg_temp_free_i64(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 */
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(imm);
/* Load all inputs first to avoid potential overwrite */
rm1 = tcg_temp_new_i32();
rm2 = tcg_temp_new_i32();
rm3 = tcg_temp_new_i32();
rm4 = tcg_temp_new_i32();
read_neon_element32(rm1, a->vm, 0, MO_32);
read_neon_element32(rm2, a->vm, 1, MO_32);
read_neon_element32(rm3, a->vm, 2, MO_32);
read_neon_element32(rm4, a->vm, 3, MO_32);
rtmp = tcg_temp_new_i64();
shiftfn(rm1, rm1, constimm);
shiftfn(rm2, rm2, constimm);
tcg_gen_concat_i32_i64(rtmp, rm1, rm2);
tcg_temp_free_i32(rm2);
narrowfn(rm1, cpu_env, rtmp);
write_neon_element32(rm1, a->vd, 0, MO_32);
tcg_temp_free_i32(rm1);
shiftfn(rm3, rm3, constimm);
shiftfn(rm4, rm4, constimm);
tcg_temp_free_i32(constimm);
tcg_gen_concat_i32_i64(rtmp, rm3, rm4);
tcg_temp_free_i32(rm4);
narrowfn(rm3, cpu_env, rtmp);
tcg_temp_free_i64(rtmp);
write_neon_element32(rm3, a->vd, 1, MO_32);
tcg_temp_free_i32(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(TCGv_i32 dest, TCGv_ptr env, TCGv_i64 src)
{
tcg_gen_extrl_i64_i32(dest, src);
}
static void gen_neon_narrow_u16(TCGv_i32 dest, TCGv_ptr env, TCGv_i64 src)
{
gen_helper_neon_narrow_u16(dest, src);
}
static void gen_neon_narrow_u8(TCGv_i32 dest, TCGv_ptr env, TCGv_i64 src)
{
gen_helper_neon_narrow_u8(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)
{
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 = tcg_temp_new_i32();
rm1 = tcg_temp_new_i32();
read_neon_element32(rm0, a->vm, 0, MO_32);
read_neon_element32(rm1, a->vm, 1, MO_32);
tmp = tcg_temp_new_i64();
widenfn(tmp, rm0);
tcg_temp_free_i32(rm0);
if (a->shift != 0) {
tcg_gen_shli_i64(tmp, tmp, a->shift);
tcg_gen_andi_i64(tmp, tmp, ~widen_mask);
}
write_neon_element64(tmp, a->vd, 0, MO_64);
widenfn(tmp, rm1);
tcg_temp_free_i32(rm1);
if (a->shift != 0) {
tcg_gen_shli_i64(tmp, tmp, a->shift);
tcg_gen_andi_i64(tmp, tmp, ~widen_mask);
}
write_neon_element64(tmp, a->vd, 1, MO_64);
tcg_temp_free_i64(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,
gen_helper_gvec_2_ptr *fn)
{
/* FP operations in 2-reg-and-shift group */
int vec_size = a->q ? 16 : 8;
int rd_ofs = neon_full_reg_offset(a->vd);
int rm_ofs = neon_full_reg_offset(a->vm);
TCGv_ptr fpst;
if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
return false;
}
if (a->size == MO_16) {
if (!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->vm) & 0x10)) {
return false;
}
if ((a->vm | a->vd) & a->q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
fpst = fpstatus_ptr(a->size == MO_16 ? FPST_STD_F16 : FPST_STD);
tcg_gen_gvec_2_ptr(rd_ofs, rm_ofs, fpst, vec_size, vec_size, a->shift, fn);
tcg_temp_free_ptr(fpst);
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_gvec_vcvt_sf)
DO_FP_2SH(VCVT_UF, gen_helper_gvec_vcvt_uf)
DO_FP_2SH(VCVT_FS, gen_helper_gvec_vcvt_fs)
DO_FP_2SH(VCVT_FU, gen_helper_gvec_vcvt_fu)
DO_FP_2SH(VCVT_SH, gen_helper_gvec_vcvt_sh)
DO_FP_2SH(VCVT_UH, gen_helper_gvec_vcvt_uh)
DO_FP_2SH(VCVT_HS, gen_helper_gvec_vcvt_hs)
DO_FP_2SH(VCVT_HU, gen_helper_gvec_vcvt_hu)
static bool do_1reg_imm(DisasContext *s, arg_1reg_imm *a,
GVecGen2iFn *fn)
{
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_full_reg_offset(a->vd);
vec_size = a->q ? 16 : 8;
imm = asimd_imm_const(a->imm, a->cmode, a->op);
fn(MO_64, reg_ofs, reg_ofs, imm, vec_size, vec_size);
return true;
}
static void gen_VMOV_1r(unsigned vece, uint32_t dofs, uint32_t aofs,
int64_t c, uint32_t oprsz, uint32_t maxsz)
{
tcg_gen_gvec_dup_imm(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,
int src1_mop, int src2_mop)
{
/* 3-regs different lengths, prewidening case (VADDL/VSUBL/VAADW/VSUBW) */
TCGv_i64 rn0_64, rn1_64, rm_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) {
/* size == 3 case, which is an entirely different insn group */
return false;
}
if ((a->vd & 1) || (src1_mop == MO_Q && (a->vn & 1))) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
rn0_64 = tcg_temp_new_i64();
rn1_64 = tcg_temp_new_i64();
rm_64 = tcg_temp_new_i64();
if (src1_mop >= 0) {
read_neon_element64(rn0_64, a->vn, 0, src1_mop);
} else {
TCGv_i32 tmp = tcg_temp_new_i32();
read_neon_element32(tmp, a->vn, 0, MO_32);
widenfn(rn0_64, tmp);
tcg_temp_free_i32(tmp);
}
if (src2_mop >= 0) {
read_neon_element64(rm_64, a->vm, 0, src2_mop);
} else {
TCGv_i32 tmp = tcg_temp_new_i32();
read_neon_element32(tmp, a->vm, 0, MO_32);
widenfn(rm_64, tmp);
tcg_temp_free_i32(tmp);
}
opfn(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_mop >= 0) {
read_neon_element64(rn1_64, a->vn, 1, src1_mop);
} else {
TCGv_i32 tmp = tcg_temp_new_i32();
read_neon_element32(tmp, a->vn, 1, MO_32);
widenfn(rn1_64, tmp);
tcg_temp_free_i32(tmp);
}
if (src2_mop >= 0) {
read_neon_element64(rm_64, a->vm, 1, src2_mop);
} else {
TCGv_i32 tmp = tcg_temp_new_i32();
read_neon_element32(tmp, a->vm, 1, MO_32);
widenfn(rm_64, tmp);
tcg_temp_free_i32(tmp);
}
write_neon_element64(rn0_64, a->vd, 0, MO_64);
opfn(rn1_64, rn1_64, rm_64);
write_neon_element64(rn1_64, a->vd, 1, MO_64);
tcg_temp_free_i64(rn0_64);
tcg_temp_free_i64(rn1_64);
tcg_temp_free_i64(rm_64);
return true;
}
#define DO_PREWIDEN(INSN, S, OP, SRC1WIDE, SIGN) \
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, \
NULL, NULL, \
}; \
static NeonGenTwo64OpFn * const addfn[] = { \
gen_helper_neon_##OP##l_u16, \
gen_helper_neon_##OP##l_u32, \
tcg_gen_##OP##_i64, \
NULL, \
}; \
int narrow_mop = a->size == MO_32 ? MO_32 | SIGN : -1; \
return do_prewiden_3d(s, a, widenfn[a->size], addfn[a->size], \
SRC1WIDE ? MO_Q : narrow_mop, \
narrow_mop); \
}
DO_PREWIDEN(VADDL_S, s, add, false, MO_SIGN)
DO_PREWIDEN(VADDL_U, u, add, false, 0)
DO_PREWIDEN(VSUBL_S, s, sub, false, MO_SIGN)
DO_PREWIDEN(VSUBL_U, u, sub, false, 0)
DO_PREWIDEN(VADDW_S, s, add, true, MO_SIGN)
DO_PREWIDEN(VADDW_U, u, add, true, 0)
DO_PREWIDEN(VSUBW_S, s, sub, true, MO_SIGN)
DO_PREWIDEN(VSUBW_U, u, sub, true, 0)
static bool do_narrow_3d(DisasContext *s, arg_3diff *a,
NeonGenTwo64OpFn *opfn, NeonGenNarrowFn *narrowfn)
{
/* 3-regs different lengths, narrowing (VADDHN/VSUBHN/VRADDHN/VRSUBHN) */
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();
rm_64 = tcg_temp_new_i64();
rd0 = tcg_temp_new_i32();
rd1 = tcg_temp_new_i32();
read_neon_element64(rn_64, a->vn, 0, MO_64);
read_neon_element64(rm_64, a->vm, 0, MO_64);
opfn(rn_64, rn_64, rm_64);
narrowfn(rd0, rn_64);
read_neon_element64(rn_64, a->vn, 1, MO_64);
read_neon_element64(rm_64, a->vm, 1, MO_64);
opfn(rn_64, rn_64, rm_64);
narrowfn(rd1, rn_64);
write_neon_element32(rd0, a->vd, 0, MO_32);
write_neon_element32(rd1, a->vd, 1, MO_32);
tcg_temp_free_i32(rd0);
tcg_temp_free_i32(rd1);
tcg_temp_free_i64(rn_64);
tcg_temp_free_i64(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(TCGv_i32 rd, TCGv_i64 rn)
{
tcg_gen_addi_i64(rn, rn, 1u << 31);
tcg_gen_extrh_i64_i32(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.
*/
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();
rd1 = tcg_temp_new_i64();
rn = tcg_temp_new_i32();
rm = tcg_temp_new_i32();
read_neon_element32(rn, a->vn, 0, MO_32);
read_neon_element32(rm, a->vm, 0, MO_32);
opfn(rd0, rn, rm);
read_neon_element32(rn, a->vn, 1, MO_32);
read_neon_element32(rm, a->vm, 1, MO_32);
opfn(rd1, rn, rm);
tcg_temp_free_i32(rn);
tcg_temp_free_i32(rm);
/* Don't store results until after all loads: they might overlap */
if (accfn) {
tmp = tcg_temp_new_i64();
read_neon_element64(tmp, a->vd, 0, MO_64);
accfn(rd0, tmp, rd0);
read_neon_element64(tmp, a->vd, 1, MO_64);
accfn(rd1, tmp, rd1);
tcg_temp_free_i64(tmp);
}
write_neon_element64(rd0, a->vd, 0, MO_64);
write_neon_element64(rd1, a->vd, 1, MO_64);
tcg_temp_free_i64(rd0);
tcg_temp_free_i64(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(TCGv_i64 rd, TCGv_i32 rn, TCGv_i32 rm)
{
TCGv_i32 lo = tcg_temp_new_i32();
TCGv_i32 hi = tcg_temp_new_i32();
tcg_gen_muls2_i32(lo, hi, rn, rm);
tcg_gen_concat_i32_i64(rd, lo, hi);
tcg_temp_free_i32(lo);
tcg_temp_free_i32(hi);
}
static void gen_mull_u32(TCGv_i64 rd, TCGv_i32 rn, TCGv_i32 rm)
{
TCGv_i32 lo = tcg_temp_new_i32();
TCGv_i32 hi = tcg_temp_new_i32();
tcg_gen_mulu2_i32(lo, hi, rn, rm);
tcg_gen_concat_i32_i64(rd, lo, hi);
tcg_temp_free_i32(lo);
tcg_temp_free_i32(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(TCGv_i64 rd, TCGv_i32 rn, TCGv_i32 rm)
{
gen_helper_neon_mull_s16(rd, rn, rm);
gen_helper_neon_addl_saturate_s32(rd, cpu_env, rd, rd);
}
static void gen_VQDMULL_32(TCGv_i64 rd, TCGv_i32 rn, TCGv_i32 rm)
{
gen_mull_s32(rd, rn, rm);
gen_helper_neon_addl_saturate_s64(rd, 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(TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
{
gen_helper_neon_addl_saturate_s32(rd, cpu_env, rn, rm);
}
static void gen_VQDMLAL_acc_32(TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
{
gen_helper_neon_addl_saturate_s64(rd, 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(TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
{
gen_helper_neon_negl_u32(rm, rm);
gen_helper_neon_addl_saturate_s32(rd, cpu_env, rn, rm);
}
static void gen_VQDMLSL_acc_32(TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
{
tcg_gen_neg_i64(rm, rm);
gen_helper_neon_addl_saturate_s64(rd, 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)
{
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(neon_full_reg_offset(a->vd),
neon_full_reg_offset(a->vn),
neon_full_reg_offset(a->vm),
16, 16, 0, fn_gvec);
return true;
}
static void gen_neon_dup_low16(TCGv_i32 var)
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_ext16u_i32(var, var);
tcg_gen_shli_i32(tmp, var, 16);
tcg_gen_or_i32(var, var, tmp);
tcg_temp_free_i32(tmp);
}
static void gen_neon_dup_high16(TCGv_i32 var)
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_andi_i32(var, var, 0xffff0000);
tcg_gen_shri_i32(tmp, var, 16);
tcg_gen_or_i32(var, var, tmp);
tcg_temp_free_i32(tmp);
}
static inline TCGv_i32 neon_get_scalar(int size, int reg)
{
TCGv_i32 tmp = tcg_temp_new_i32();
if (size == MO_16) {
read_neon_element32(tmp, reg & 7, reg >> 4, MO_32);
if (reg & 8) {
gen_neon_dup_high16(tmp);
} else {
gen_neon_dup_low16(tmp);
}
} else {
read_neon_element32(tmp, reg & 15, reg >> 4, MO_32);
}
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.
*/
TCGv_i32 scalar, tmp;
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(a->size, a->vm);
tmp = tcg_temp_new_i32();
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
read_neon_element32(tmp, a->vn, pass, MO_32);
opfn(tmp, tmp, scalar);
if (accfn) {
TCGv_i32 rd = tcg_temp_new_i32();
read_neon_element32(rd, a->vd, pass, MO_32);
accfn(tmp, rd, tmp);
tcg_temp_free_i32(rd);
}
write_neon_element32(tmp, a->vd, pass, MO_32);
}
tcg_temp_free_i32(tmp);
tcg_temp_free_i32(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]);
}
static bool do_2scalar_fp_vec(DisasContext *s, arg_2scalar *a,
gen_helper_gvec_3_ptr *fn)
{
/* Two registers and a scalar, using gvec */
int vec_size = a->q ? 16 : 8;
int rd_ofs = neon_full_reg_offset(a->vd);
int rn_ofs = neon_full_reg_offset(a->vn);
int rm_ofs;
int idx;
TCGv_ptr fpstatus;
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 (!fn) {
/* 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;
}
/* a->vm is M:Vm, which encodes both register and index */
idx = extract32(a->vm, a->size + 2, 2);
a->vm = extract32(a->vm, 0, a->size + 2);
rm_ofs = neon_full_reg_offset(a->vm);
fpstatus = fpstatus_ptr(a->size == 1 ? FPST_STD_F16 : FPST_STD);
tcg_gen_gvec_3_ptr(rd_ofs, rn_ofs, rm_ofs, fpstatus,
vec_size, vec_size, idx, fn);
tcg_temp_free_ptr(fpstatus);
return true;
}
#define DO_VMUL_F_2sc(NAME, FUNC) \
static bool trans_##NAME##_F_2sc(DisasContext *s, arg_2scalar *a) \
{ \
static gen_helper_gvec_3_ptr * const opfn[] = { \
NULL, \
gen_helper_##FUNC##_h, \
gen_helper_##FUNC##_s, \
NULL, \
}; \
if (a->size == MO_16 && !dc_isar_feature(aa32_fp16_arith, s)) { \
return false; \
} \
return do_2scalar_fp_vec(s, a, opfn[a->size]); \
}
DO_VMUL_F_2sc(VMUL, gvec_fmul_idx)
DO_VMUL_F_2sc(VMLA, gvec_fmla_nf_idx)
DO_VMUL_F_2sc(VMLS, gvec_fmls_nf_idx)
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.
*/
TCGv_i32 scalar, rn, rd;
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(a->size, a->vm);
rn = tcg_temp_new_i32();
rd = tcg_temp_new_i32();
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
read_neon_element32(rn, a->vn, pass, MO_32);
read_neon_element32(rd, a->vd, pass, MO_32);
opfn(rd, cpu_env, rn, scalar, rd);
write_neon_element32(rd, a->vd, pass, MO_32);
}
tcg_temp_free_i32(rn);
tcg_temp_free_i32(rd);
tcg_temp_free_i32(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.
*/
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(a->size, a->vm);
/* Load all inputs before writing any outputs, in case of overlap */
rn = tcg_temp_new_i32();
read_neon_element32(rn, a->vn, 0, MO_32);
rn0_64 = tcg_temp_new_i64();
opfn(rn0_64, rn, scalar);
read_neon_element32(rn, a->vn, 1, MO_32);
rn1_64 = tcg_temp_new_i64();
opfn(rn1_64, rn, scalar);
tcg_temp_free_i32(rn);
tcg_temp_free_i32(scalar);
if (accfn) {
TCGv_i64 t64 = tcg_temp_new_i64();
read_neon_element64(t64, a->vd, 0, MO_64);
accfn(rn0_64, t64, rn0_64);
read_neon_element64(t64, a->vd, 1, MO_64);
accfn(rn1_64, t64, rn1_64);
tcg_temp_free_i64(t64);
}
write_neon_element64(rn0_64, a->vd, 0, MO_64);
write_neon_element64(rn1_64, a->vd, 1, MO_64);
tcg_temp_free_i64(rn0_64);
tcg_temp_free_i64(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)
{
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();
right = tcg_temp_new_i64();
dest = tcg_temp_new_i64();
read_neon_element64(right, a->vn, 0, MO_64);
read_neon_element64(left, a->vm, 0, MO_64);
tcg_gen_extract2_i64(dest, right, left, a->imm * 8);
write_neon_element64(dest, a->vd, 0, MO_64);
tcg_temp_free_i64(left);
tcg_temp_free_i64(right);
tcg_temp_free_i64(dest);
} else {
/* Extract 128 bits from <Vm+1:Vm:Vn+1:Vn> */
TCGv_i64 left, middle, right, destleft, destright;
left = tcg_temp_new_i64();
middle = tcg_temp_new_i64();
right = tcg_temp_new_i64();
destleft = tcg_temp_new_i64();
destright = tcg_temp_new_i64();
if (a->imm < 8) {
read_neon_element64(right, a->vn, 0, MO_64);
read_neon_element64(middle, a->vn, 1, MO_64);
tcg_gen_extract2_i64(destright, right, middle, a->imm * 8);
read_neon_element64(left, a->vm, 0, MO_64);
tcg_gen_extract2_i64(destleft, middle, left, a->imm * 8);
} else {
read_neon_element64(right, a->vn, 1, MO_64);
read_neon_element64(middle, a->vm, 0, MO_64);
tcg_gen_extract2_i64(destright, right, middle, (a->imm - 8) * 8);
read_neon_element64(left, a->vm, 1, MO_64);
tcg_gen_extract2_i64(destleft, middle, left, (a->imm - 8) * 8);
}
write_neon_element64(destright, a->vd, 0, MO_64);
write_neon_element64(destleft, a->vd, 1, MO_64);
tcg_temp_free_i64(destright);
tcg_temp_free_i64(destleft);
tcg_temp_free_i64(right);
tcg_temp_free_i64(middle);
tcg_temp_free_i64(left);
}
return true;
}
static bool trans_VTBL(DisasContext *s, arg_VTBL *a)
{
TCGv_i64 val, def;
TCGv_i32 desc;
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->len + 1) > 32) {
/*
* This is UNPREDICTABLE; we choose to UNDEF to avoid the
* helper function running off the end of the register file.
*/
return false;
}
if (!vfp_access_check(s)) {
return true;
}
desc = tcg_const_i32((a->vn << 2) | a->len);
def = tcg_temp_new_i64();
if (a->op) {
read_neon_element64(def, a->vd, 0, MO_64);
} else {
tcg_gen_movi_i64(def, 0);
}
val = tcg_temp_new_i64();
read_neon_element64(val, a->vm, 0, MO_64);
gen_helper_neon_tbl(val, cpu_env, desc, val, def);
write_neon_element64(val, a->vd, 0, MO_64);
tcg_temp_free_i64(def);
tcg_temp_free_i64(val);
tcg_temp_free_i32(desc);
return true;
}
static bool trans_VDUP_scalar(DisasContext *s, arg_VDUP_scalar *a)
{
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(a->size, neon_full_reg_offset(a->vd),
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;
TCGv_i32 tmp[2];
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;
}
tmp[0] = tcg_temp_new_i32();
tmp[1] = tcg_temp_new_i32();
for (pass = 0; pass < (a->q ? 2 : 1); pass++) {
for (half = 0; half < 2; half++) {
read_neon_element32(tmp[half], a->vm, pass * 2 + half, MO_32);
switch (a->size) {
case 0:
tcg_gen_bswap32_i32(tmp[half], tmp[half]);
break;
case 1:
gen_swap_half(tmp[half], tmp[half]);
break;
case 2:
break;
default:
g_assert_not_reached();
}
}
write_neon_element32(tmp[1], a->vd, pass * 2, MO_32);
write_neon_element32(tmp[0], a->vd, pass * 2 + 1, MO_32);
}
tcg_temp_free_i32(tmp[0]);
tcg_temp_free_i32(tmp[1]);
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;
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();
rm1_64 = tcg_temp_new_i64();
rd_64 = tcg_temp_new_i64();
tmp = tcg_temp_new_i32();
read_neon_element32(tmp, a->vm, pass * 2, MO_32);
widenfn(rm0_64, tmp);
read_neon_element32(tmp, a->vm, pass * 2 + 1, MO_32);
widenfn(rm1_64, tmp);
tcg_temp_free_i32(tmp);
opfn(rd_64, rm0_64, rm1_64);
tcg_temp_free_i64(rm0_64);
tcg_temp_free_i64(rm1_64);
if (accfn) {
TCGv_i64 tmp64 = tcg_temp_new_i64();
read_neon_element64(tmp64, a->vd, pass, MO_64);
accfn(rd_64, tmp64, rd_64);
tcg_temp_free_i64(tmp64);
}
write_neon_element64(rd_64, a->vd, pass, MO_64);
tcg_temp_free_i64(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(TCGv_ptr, TCGv_ptr);
static bool do_zip_uzp(DisasContext *s, arg_2misc *a,
ZipFn *fn)
{
TCGv_ptr pd, pm;
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(true, a->vd);
pm = vfp_reg_ptr(true, a->vm);
fn(pd, pm);
tcg_temp_free_ptr(pd);
tcg_temp_free_ptr(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;
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();
rd0 = tcg_temp_new_i32();
rd1 = tcg_temp_new_i32();
read_neon_element64(rm, a->vm, 0, MO_64);
narrowfn(rd0, cpu_env, rm);
read_neon_element64(rm, a->vm, 1, MO_64);
narrowfn(rd1, cpu_env, rm);
write_neon_element32(rd0, a->vd, 0, MO_32);
write_neon_element32(rd1, a->vd, 1, MO_32);
tcg_temp_free_i32(rd0);
tcg_temp_free_i32(rd1);
tcg_temp_free_i64(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)
{
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();
rm0 = tcg_temp_new_i32();
rm1 = tcg_temp_new_i32();
read_neon_element32(rm0, a->vm, 0, MO_32);
read_neon_element32(rm1, a->vm, 1, MO_32);
widenfn(rd, rm0);
tcg_gen_shli_i64(rd, rd, 8 << a->size);
write_neon_element64(rd, a->vd, 0, MO_64);
widenfn(rd, rm1);
tcg_gen_shli_i64(rd, rd, 8 << a->size);
write_neon_element64(rd, a->vd, 1, MO_64);
tcg_temp_free_i64(rd);
tcg_temp_free_i32(rm0);
tcg_temp_free_i32(rm1);
return true;
}
static bool trans_VCVT_B16_F32(DisasContext *s, arg_2misc *a)
{
TCGv_ptr fpst;
TCGv_i64 tmp;
TCGv_i32 dst0, dst1;
if (!dc_isar_feature(aa32_bf16, 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(FPST_STD);
tmp = tcg_temp_new_i64();
dst0 = tcg_temp_new_i32();
dst1 = tcg_temp_new_i32();
read_neon_element64(tmp, a->vm, 0, MO_64);
gen_helper_bfcvt_pair(dst0, tmp, fpst);
read_neon_element64(tmp, a->vm, 1, MO_64);
gen_helper_bfcvt_pair(dst1, tmp, fpst);
write_neon_element32(dst0, a->vd, 0, MO_32);
write_neon_element32(dst1, a->vd, 1, MO_32);
tcg_temp_free_i64(tmp);
tcg_temp_free_i32(dst0);
tcg_temp_free_i32(dst1);
tcg_temp_free_ptr(fpst);
return true;
}
static bool trans_VCVT_F16_F32(DisasContext *s, arg_2misc *a)
{
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(FPST_STD);
ahp = get_ahp_flag();
tmp = tcg_temp_new_i32();
read_neon_element32(tmp, a->vm, 0, MO_32);
gen_helper_vfp_fcvt_f32_to_f16(tmp, tmp, fpst, ahp);
tmp2 = tcg_temp_new_i32();
read_neon_element32(tmp2, a->vm, 1, MO_32);
gen_helper_vfp_fcvt_f32_to_f16(tmp2, tmp2, fpst, ahp);
tcg_gen_shli_i32(tmp2, tmp2, 16);
tcg_gen_or_i32(tmp2, tmp2, tmp);
read_neon_element32(tmp, a->vm, 2, MO_32);
gen_helper_vfp_fcvt_f32_to_f16(tmp, tmp, fpst, ahp);
tmp3 = tcg_temp_new_i32();
read_neon_element32(tmp3, a->vm, 3, MO_32);
write_neon_element32(tmp2, a->vd, 0, MO_32);
tcg_temp_free_i32(tmp2);
gen_helper_vfp_fcvt_f32_to_f16(tmp3, tmp3, fpst, ahp);
tcg_gen_shli_i32(tmp3, tmp3, 16);
tcg_gen_or_i32(tmp3, tmp3, tmp);
write_neon_element32(tmp3, a->vd, 1, MO_32);
tcg_temp_free_i32(tmp3);
tcg_temp_free_i32(tmp);
tcg_temp_free_i32(ahp);
tcg_temp_free_ptr(fpst);
return true;
}
static bool trans_VCVT_F32_F16(DisasContext *s, arg_2misc *a)
{
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(FPST_STD);
ahp = get_ahp_flag();
tmp3 = tcg_temp_new_i32();
tmp2 = tcg_temp_new_i32();
tmp = tcg_temp_new_i32();
read_neon_element32(tmp, a->vm, 0, MO_32);
read_neon_element32(tmp2, a->vm, 1, MO_32);
tcg_gen_ext16u_i32(tmp3, tmp);
gen_helper_vfp_fcvt_f16_to_f32(tmp3, tmp3, fpst, ahp);
write_neon_element32(tmp3, a->vd, 0, MO_32);
tcg_gen_shri_i32(tmp, tmp, 16);
gen_helper_vfp_fcvt_f16_to_f32(tmp, tmp, fpst, ahp);
write_neon_element32(tmp, a->vd, 1, MO_32);
tcg_temp_free_i32(tmp);
tcg_gen_ext16u_i32(tmp3, tmp2);
gen_helper_vfp_fcvt_f16_to_f32(tmp3, tmp3, fpst, ahp);
write_neon_element32(tmp3, a->vd, 2, MO_32);
tcg_temp_free_i32(tmp3);
tcg_gen_shri_i32(tmp2, tmp2, 16);
gen_helper_vfp_fcvt_f16_to_f32(tmp2, tmp2, fpst, ahp);
write_neon_element32(tmp2, a->vd, 3, MO_32);
tcg_temp_free_i32(tmp2);
tcg_temp_free_i32(ahp);
tcg_temp_free_ptr(fpst);
return true;
}
static bool do_2misc_vec(DisasContext *s, arg_2misc *a, GVecGen2Fn *fn)
{
int vec_size = a->q ? 16 : 8;
int rd_ofs = neon_full_reg_offset(a->vd);
int rm_ofs = neon_full_reg_offset(a->vm);
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(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(unsigned vece, uint32_t rd_ofs, \
uint32_t rm_ofs, uint32_t oprsz, \
uint32_t maxsz) \
{ \
tcg_gen_gvec_3_ool(rd_ofs, rd_ofs, rm_ofs, oprsz, maxsz, \
DATA, FUNC); \
}
#define WRAP_2M_2_OOL_FN(WRAPNAME, FUNC, DATA) \
static void WRAPNAME(unsigned vece, uint32_t rd_ofs, \
uint32_t rm_ofs, uint32_t oprsz, \
uint32_t maxsz) \
{ \
tcg_gen_gvec_2_ool(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)
{
TCGv_i32 tmp;
int pass;
/* 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;
}
tmp = tcg_temp_new_i32();
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
read_neon_element32(tmp, a->vm, pass, MO_32);
fn(tmp, tmp);
write_neon_element32(tmp, a->vd, pass, MO_32);
}
tcg_temp_free_i32(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(TCGv_i32 rd, TCGv_i32 rm)
{
tcg_gen_clzi_i32(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 void gen_VABS_F(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs,
uint32_t oprsz, uint32_t maxsz)
{
tcg_gen_gvec_andi(vece, rd_ofs, rm_ofs,
vece == MO_16 ? 0x7fff : 0x7fffffff,
oprsz, maxsz);
}
static bool trans_VABS_F(DisasContext *s, arg_2misc *a)
{
if (a->size == MO_16) {
if (!dc_isar_feature(aa32_fp16_arith, s)) {
return false;
}
} else if (a->size != MO_32) {
return false;
}
return do_2misc_vec(s, a, gen_VABS_F);
}
static void gen_VNEG_F(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs,
uint32_t oprsz, uint32_t maxsz)
{
tcg_gen_gvec_xori(vece, rd_ofs, rm_ofs,
vece == MO_16 ? 0x8000 : 0x80000000,
oprsz, maxsz);
}
static bool trans_VNEG_F(DisasContext *s, arg_2misc *a)
{
if (a->size == MO_16) {
if (!dc_isar_feature(aa32_fp16_arith, s)) {
return false;
}
} else if (a->size != MO_32) {
return false;
}
return do_2misc_vec(s, a, gen_VNEG_F);
}
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(TCGv_i32 d, TCGv_i32 m) \
{ \
FUNC(d, 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]);
}
#define DO_2MISC_FP_VEC(INSN, HFUNC, SFUNC) \
static void gen_##INSN(unsigned vece, uint32_t rd_ofs, \
uint32_t rm_ofs, \
uint32_t oprsz, uint32_t maxsz) \
{ \
static gen_helper_gvec_2_ptr * const fns[4] = { \
NULL, HFUNC, SFUNC, NULL, \
}; \
TCGv_ptr fpst; \
fpst = fpstatus_ptr(vece == MO_16 ? FPST_STD_F16 : FPST_STD); \
tcg_gen_gvec_2_ptr(rd_ofs, rm_ofs, fpst, oprsz, maxsz, 0, \
fns[vece]); \
tcg_temp_free_ptr(fpst); \
} \
static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
{ \
if (a->size == MO_16) { \
if (!dc_isar_feature(aa32_fp16_arith, s)) { \
return false; \
} \
} else if (a->size != MO_32) { \
return false; \
} \
return do_2misc_vec(s, a, gen_##INSN); \
}
DO_2MISC_FP_VEC(VRECPE_F, gen_helper_gvec_frecpe_h, gen_helper_gvec_frecpe_s)
DO_2MISC_FP_VEC(VRSQRTE_F, gen_helper_gvec_frsqrte_h, gen_helper_gvec_frsqrte_s)
DO_2MISC_FP_VEC(VCGT0_F, gen_helper_gvec_fcgt0_h, gen_helper_gvec_fcgt0_s)
DO_2MISC_FP_VEC(VCGE0_F, gen_helper_gvec_fcge0_h, gen_helper_gvec_fcge0_s)
DO_2MISC_FP_VEC(VCEQ0_F, gen_helper_gvec_fceq0_h, gen_helper_gvec_fceq0_s)
DO_2MISC_FP_VEC(VCLT0_F, gen_helper_gvec_fclt0_h, gen_helper_gvec_fclt0_s)
DO_2MISC_FP_VEC(VCLE0_F, gen_helper_gvec_fcle0_h, gen_helper_gvec_fcle0_s)
DO_2MISC_FP_VEC(VCVT_FS, gen_helper_gvec_sstoh, gen_helper_gvec_sitos)
DO_2MISC_FP_VEC(VCVT_FU, gen_helper_gvec_ustoh, gen_helper_gvec_uitos)
DO_2MISC_FP_VEC(VCVT_SF, gen_helper_gvec_tosszh, gen_helper_gvec_tosizs)
DO_2MISC_FP_VEC(VCVT_UF, gen_helper_gvec_touszh, gen_helper_gvec_touizs)
DO_2MISC_FP_VEC(VRINTX_impl, gen_helper_gvec_vrintx_h, gen_helper_gvec_vrintx_s)
static bool trans_VRINTX(DisasContext *s, arg_2misc *a)
{
if (!arm_dc_feature(s, ARM_FEATURE_V8)) {
return false;
}
return trans_VRINTX_impl(s, a);
}
#define DO_VEC_RMODE(INSN, RMODE, OP) \
static void gen_##INSN(unsigned vece, uint32_t rd_ofs, \
uint32_t rm_ofs, \
uint32_t oprsz, uint32_t maxsz) \
{ \
static gen_helper_gvec_2_ptr * const fns[4] = { \
NULL, \
gen_helper_gvec_##OP##h, \
gen_helper_gvec_##OP##s, \
NULL, \
}; \
TCGv_ptr fpst; \
fpst = fpstatus_ptr(vece == 1 ? FPST_STD_F16 : FPST_STD); \
tcg_gen_gvec_2_ptr(rd_ofs, rm_ofs, fpst, oprsz, maxsz, \
arm_rmode_to_sf(RMODE), fns[vece]); \
tcg_temp_free_ptr(fpst); \
} \
static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
{ \
if (!arm_dc_feature(s, ARM_FEATURE_V8)) { \
return false; \
} \
if (a->size == MO_16) { \
if (!dc_isar_feature(aa32_fp16_arith, s)) { \
return false; \
} \
} else if (a->size != MO_32) { \
return false; \
} \
return do_2misc_vec(s, a, gen_##INSN); \
}
DO_VEC_RMODE(VCVTAU, FPROUNDING_TIEAWAY, vcvt_rm_u)
DO_VEC_RMODE(VCVTAS, FPROUNDING_TIEAWAY, vcvt_rm_s)
DO_VEC_RMODE(VCVTNU, FPROUNDING_TIEEVEN, vcvt_rm_u)
DO_VEC_RMODE(VCVTNS, FPROUNDING_TIEEVEN, vcvt_rm_s)
DO_VEC_RMODE(VCVTPU, FPROUNDING_POSINF, vcvt_rm_u)
DO_VEC_RMODE(VCVTPS, FPROUNDING_POSINF, vcvt_rm_s)
DO_VEC_RMODE(VCVTMU, FPROUNDING_NEGINF, vcvt_rm_u)
DO_VEC_RMODE(VCVTMS, FPROUNDING_NEGINF, vcvt_rm_s)
DO_VEC_RMODE(VRINTN, FPROUNDING_TIEEVEN, vrint_rm_)
DO_VEC_RMODE(VRINTA, FPROUNDING_TIEAWAY, vrint_rm_)
DO_VEC_RMODE(VRINTZ, FPROUNDING_ZERO, vrint_rm_)
DO_VEC_RMODE(VRINTM, FPROUNDING_NEGINF, vrint_rm_)
DO_VEC_RMODE(VRINTP, FPROUNDING_POSINF, vrint_rm_)
static bool trans_VSWP(DisasContext *s, arg_2misc *a)
{
TCGv_i64 rm, rd;
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->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();
rd = tcg_temp_new_i64();
for (pass = 0; pass < (a->q ? 2 : 1); pass++) {
read_neon_element64(rm, a->vm, pass, MO_64);
read_neon_element64(rd, a->vd, pass, MO_64);
write_neon_element64(rm, a->vd, pass, MO_64);
write_neon_element64(rd, a->vm, pass, MO_64);
}
tcg_temp_free_i64(rm);
tcg_temp_free_i64(rd);
return true;
}
static void gen_neon_trn_u8(TCGv_i32 t0, TCGv_i32 t1)
{
TCGv_i32 rd, tmp;
rd = tcg_temp_new_i32();
tmp = tcg_temp_new_i32();
tcg_gen_shli_i32(rd, t0, 8);
tcg_gen_andi_i32(rd, rd, 0xff00ff00);
tcg_gen_andi_i32(tmp, t1, 0x00ff00ff);
tcg_gen_or_i32(rd, rd, tmp);
tcg_gen_shri_i32(t1, t1, 8);
tcg_gen_andi_i32(t1, t1, 0x00ff00ff);
tcg_gen_andi_i32(tmp, t0, 0xff00ff00);
tcg_gen_or_i32(t1, t1, tmp);
tcg_gen_mov_i32(t0, rd);
tcg_temp_free_i32(tmp);
tcg_temp_free_i32(rd);
}
static void gen_neon_trn_u16(TCGv_i32 t0, TCGv_i32 t1)
{
TCGv_i32 rd, tmp;
rd = tcg_temp_new_i32();
tmp = tcg_temp_new_i32();
tcg_gen_shli_i32(rd, t0, 16);
tcg_gen_andi_i32(tmp, t1, 0xffff);
tcg_gen_or_i32(rd, rd, tmp);
tcg_gen_shri_i32(t1, t1, 16);
tcg_gen_andi_i32(tmp, t0, 0xffff0000);
tcg_gen_or_i32(t1, t1, tmp);
tcg_gen_mov_i32(t0, rd);
tcg_temp_free_i32(tmp);
tcg_temp_free_i32(rd);
}
static bool trans_VTRN(DisasContext *s, arg_2misc *a)
{
TCGv_i32 tmp, tmp2;
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->vd | a->vm) & a->q) {
return false;
}
if (a->size == 3) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
tmp = tcg_temp_new_i32();
tmp2 = tcg_temp_new_i32();
if (a->size == MO_32) {
for (pass = 0; pass < (a->q ? 4 : 2); pass += 2) {
read_neon_element32(tmp, a->vm, pass, MO_32);
read_neon_element32(tmp2, a->vd, pass + 1, MO_32);
write_neon_element32(tmp2, a->vm, pass, MO_32);
write_neon_element32(tmp, a->vd, pass + 1, MO_32);
}
} else {
for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
read_neon_element32(tmp, a->vm, pass, MO_32);
read_neon_element32(tmp2, a->vd, pass, MO_32);
if (a->size == MO_8) {
gen_neon_trn_u8(tmp, tmp2);
} else {
gen_neon_trn_u16(tmp, tmp2);
}
write_neon_element32(tmp2, a->vm, pass, MO_32);
write_neon_element32(tmp, a->vd, pass, MO_32);
}
}
tcg_temp_free_i32(tmp);
tcg_temp_free_i32(tmp2);
return true;
}
static bool trans_VSMMLA(DisasContext *s, arg_VSMMLA *a)
{
if (!dc_isar_feature(aa32_i8mm, s)) {
return false;
}
return do_neon_ddda(s, 7, a->vd, a->vn, a->vm, 0,
gen_helper_gvec_smmla_b);
}
static bool trans_VUMMLA(DisasContext *s, arg_VUMMLA *a)
{
if (!dc_isar_feature(aa32_i8mm, s)) {
return false;
}
return do_neon_ddda(s, 7, a->vd, a->vn, a->vm, 0,
gen_helper_gvec_ummla_b);
}
static bool trans_VUSMMLA(DisasContext *s, arg_VUSMMLA *a)
{
if (!dc_isar_feature(aa32_i8mm, s)) {
return false;
}
return do_neon_ddda(s, 7, a->vd, a->vn, a->vm, 0,
gen_helper_gvec_usmmla_b);
}
static bool trans_VMMLA_b16(DisasContext *s, arg_VMMLA_b16 *a)
{
if (!dc_isar_feature(aa32_bf16, s)) {
return false;
}
return do_neon_ddda(s, 7, a->vd, a->vn, a->vm, 0,
gen_helper_gvec_bfmmla);
}
static bool trans_VFMA_b16(DisasContext *s, arg_VFMA_b16 *a)
{
if (!dc_isar_feature(aa32_bf16, s)) {
return false;
}
return do_neon_ddda_fpst(s, 7, a->vd, a->vn, a->vm, a->q, FPST_STD,
gen_helper_gvec_bfmlal);
}
static bool trans_VFMA_b16_scal(DisasContext *s, arg_VFMA_b16_scal *a)
{
if (!dc_isar_feature(aa32_bf16, s)) {
return false;
}
return do_neon_ddda_fpst(s, 6, a->vd, a->vn, a->vm,
(a->index << 1) | a->q, FPST_STD,
gen_helper_gvec_bfmlal_idx);
}
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