Commit 02acedf9 authored by Peter Maydell's avatar Peter Maydell Committed by Aurelien Jarno
Browse files

target-arm: Move Neon VUZP to helper functions



Move the implementation of the Neon VUZP unzip instruction from inline
code to helper functions. (At 50+ TCG ops it was well over the
recommended limit for coding inline.) The helper implementations also
fix the handling of the quadword version of the instruction.
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarAurelien Jarno <aurelien@aurel32.net>
parent f06053e3
......@@ -461,4 +461,10 @@ DEF_HELPER_3(iwmmxt_muladdswl, i64, i64, i32, i32)
DEF_HELPER_2(set_teecr, void, env, i32)
DEF_HELPER_3(neon_unzip8, void, env, i32, i32)
DEF_HELPER_3(neon_unzip16, void, env, i32, i32)
DEF_HELPER_3(neon_qunzip8, void, env, i32, i32)
DEF_HELPER_3(neon_qunzip16, void, env, i32, i32)
DEF_HELPER_3(neon_qunzip32, void, env, i32, i32)
#include "def-helper.h"
......@@ -1693,3 +1693,97 @@ uint32_t HELPER(neon_acgt_f32)(uint32_t a, uint32_t b)
float32 f1 = float32_abs(vfp_itos(b));
return (float32_compare_quiet(f0, f1, NFS) > 0) ? ~0 : 0;
}
#define ELEM(V, N, SIZE) (((V) >> ((N) * (SIZE))) & ((1ull << (SIZE)) - 1))
void HELPER(neon_qunzip8)(CPUState *env, uint32_t rd, uint32_t rm)
{
uint64_t zm0 = float64_val(env->vfp.regs[rm]);
uint64_t zm1 = float64_val(env->vfp.regs[rm + 1]);
uint64_t zd0 = float64_val(env->vfp.regs[rd]);
uint64_t zd1 = float64_val(env->vfp.regs[rd + 1]);
uint64_t d0 = ELEM(zd0, 0, 8) | (ELEM(zd0, 2, 8) << 8)
| (ELEM(zd0, 4, 8) << 16) | (ELEM(zd0, 6, 8) << 24)
| (ELEM(zd1, 0, 8) << 32) | (ELEM(zd1, 2, 8) << 40)
| (ELEM(zd1, 4, 8) << 48) | (ELEM(zd1, 6, 8) << 56);
uint64_t d1 = ELEM(zm0, 0, 8) | (ELEM(zm0, 2, 8) << 8)
| (ELEM(zm0, 4, 8) << 16) | (ELEM(zm0, 6, 8) << 24)
| (ELEM(zm1, 0, 8) << 32) | (ELEM(zm1, 2, 8) << 40)
| (ELEM(zm1, 4, 8) << 48) | (ELEM(zm1, 6, 8) << 56);
uint64_t m0 = ELEM(zd0, 1, 8) | (ELEM(zd0, 3, 8) << 8)
| (ELEM(zd0, 5, 8) << 16) | (ELEM(zd0, 7, 8) << 24)
| (ELEM(zd1, 1, 8) << 32) | (ELEM(zd1, 3, 8) << 40)
| (ELEM(zd1, 5, 8) << 48) | (ELEM(zd1, 7, 8) << 56);
uint64_t m1 = ELEM(zm0, 1, 8) | (ELEM(zm0, 3, 8) << 8)
| (ELEM(zm0, 5, 8) << 16) | (ELEM(zm0, 7, 8) << 24)
| (ELEM(zm1, 1, 8) << 32) | (ELEM(zm1, 3, 8) << 40)
| (ELEM(zm1, 5, 8) << 48) | (ELEM(zm1, 7, 8) << 56);
env->vfp.regs[rm] = make_float64(m0);
env->vfp.regs[rm + 1] = make_float64(m1);
env->vfp.regs[rd] = make_float64(d0);
env->vfp.regs[rd + 1] = make_float64(d1);
}
void HELPER(neon_qunzip16)(CPUState *env, uint32_t rd, uint32_t rm)
{
uint64_t zm0 = float64_val(env->vfp.regs[rm]);
uint64_t zm1 = float64_val(env->vfp.regs[rm + 1]);
uint64_t zd0 = float64_val(env->vfp.regs[rd]);
uint64_t zd1 = float64_val(env->vfp.regs[rd + 1]);
uint64_t d0 = ELEM(zd0, 0, 16) | (ELEM(zd0, 2, 16) << 16)
| (ELEM(zd1, 0, 16) << 32) | (ELEM(zd1, 2, 16) << 48);
uint64_t d1 = ELEM(zm0, 0, 16) | (ELEM(zm0, 2, 16) << 16)
| (ELEM(zm1, 0, 16) << 32) | (ELEM(zm1, 2, 16) << 48);
uint64_t m0 = ELEM(zd0, 1, 16) | (ELEM(zd0, 3, 16) << 16)
| (ELEM(zd1, 1, 16) << 32) | (ELEM(zd1, 3, 16) << 48);
uint64_t m1 = ELEM(zm0, 1, 16) | (ELEM(zm0, 3, 16) << 16)
| (ELEM(zm1, 1, 16) << 32) | (ELEM(zm1, 3, 16) << 48);
env->vfp.regs[rm] = make_float64(m0);
env->vfp.regs[rm + 1] = make_float64(m1);
env->vfp.regs[rd] = make_float64(d0);
env->vfp.regs[rd + 1] = make_float64(d1);
}
void HELPER(neon_qunzip32)(CPUState *env, uint32_t rd, uint32_t rm)
{
uint64_t zm0 = float64_val(env->vfp.regs[rm]);
uint64_t zm1 = float64_val(env->vfp.regs[rm + 1]);
uint64_t zd0 = float64_val(env->vfp.regs[rd]);
uint64_t zd1 = float64_val(env->vfp.regs[rd + 1]);
uint64_t d0 = ELEM(zd0, 0, 32) | (ELEM(zd1, 0, 32) << 32);
uint64_t d1 = ELEM(zm0, 0, 32) | (ELEM(zm1, 0, 32) << 32);
uint64_t m0 = ELEM(zd0, 1, 32) | (ELEM(zd1, 1, 32) << 32);
uint64_t m1 = ELEM(zm0, 1, 32) | (ELEM(zm1, 1, 32) << 32);
env->vfp.regs[rm] = make_float64(m0);
env->vfp.regs[rm + 1] = make_float64(m1);
env->vfp.regs[rd] = make_float64(d0);
env->vfp.regs[rd + 1] = make_float64(d1);
}
void HELPER(neon_unzip8)(CPUState *env, uint32_t rd, uint32_t rm)
{
uint64_t zm = float64_val(env->vfp.regs[rm]);
uint64_t zd = float64_val(env->vfp.regs[rd]);
uint64_t d0 = ELEM(zd, 0, 8) | (ELEM(zd, 2, 8) << 8)
| (ELEM(zd, 4, 8) << 16) | (ELEM(zd, 6, 8) << 24)
| (ELEM(zm, 0, 8) << 32) | (ELEM(zm, 2, 8) << 40)
| (ELEM(zm, 4, 8) << 48) | (ELEM(zm, 6, 8) << 56);
uint64_t m0 = ELEM(zd, 1, 8) | (ELEM(zd, 3, 8) << 8)
| (ELEM(zd, 5, 8) << 16) | (ELEM(zd, 7, 8) << 24)
| (ELEM(zm, 1, 8) << 32) | (ELEM(zm, 3, 8) << 40)
| (ELEM(zm, 5, 8) << 48) | (ELEM(zm, 7, 8) << 56);
env->vfp.regs[rm] = make_float64(m0);
env->vfp.regs[rd] = make_float64(d0);
}
void HELPER(neon_unzip16)(CPUState *env, uint32_t rd, uint32_t rm)
{
uint64_t zm = float64_val(env->vfp.regs[rm]);
uint64_t zd = float64_val(env->vfp.regs[rd]);
uint64_t d0 = ELEM(zd, 0, 16) | (ELEM(zd, 2, 16) << 16)
| (ELEM(zm, 0, 16) << 32) | (ELEM(zm, 2, 16) << 48);
uint64_t m0 = ELEM(zd, 1, 16) | (ELEM(zd, 3, 16) << 16)
| (ELEM(zm, 1, 16) << 32) | (ELEM(zm, 3, 16) << 48);
env->vfp.regs[rm] = make_float64(m0);
env->vfp.regs[rd] = make_float64(d0);
}
......@@ -3614,40 +3614,43 @@ static inline TCGv neon_get_scalar(int size, int reg)
return tmp;
}
static void gen_neon_unzip_u8(TCGv t0, TCGv t1)
static int gen_neon_unzip(int rd, int rm, int size, int q)
{
TCGv rd, rm, tmp;
rd = new_tmp();
rm = new_tmp();
tmp = new_tmp();
tcg_gen_andi_i32(rd, t0, 0xff);
tcg_gen_shri_i32(tmp, t0, 8);
tcg_gen_andi_i32(tmp, tmp, 0xff00);
tcg_gen_or_i32(rd, rd, tmp);
tcg_gen_shli_i32(tmp, t1, 16);
tcg_gen_andi_i32(tmp, tmp, 0xff0000);
tcg_gen_or_i32(rd, rd, tmp);
tcg_gen_shli_i32(tmp, t1, 8);
tcg_gen_andi_i32(tmp, tmp, 0xff000000);
tcg_gen_or_i32(rd, rd, tmp);
tcg_gen_shri_i32(rm, t0, 8);
tcg_gen_andi_i32(rm, rm, 0xff);
tcg_gen_shri_i32(tmp, t0, 16);
tcg_gen_andi_i32(tmp, tmp, 0xff00);
tcg_gen_or_i32(rm, rm, tmp);
tcg_gen_shli_i32(tmp, t1, 8);
tcg_gen_andi_i32(tmp, tmp, 0xff0000);
tcg_gen_or_i32(rm, rm, tmp);
tcg_gen_andi_i32(tmp, t1, 0xff000000);
tcg_gen_or_i32(t1, rm, tmp);
tcg_gen_mov_i32(t0, rd);
dead_tmp(tmp);
dead_tmp(rm);
dead_tmp(rd);
TCGv tmp, tmp2;
if (size == 3 || (!q && size == 2)) {
return 1;
}
tmp = tcg_const_i32(rd);
tmp2 = tcg_const_i32(rm);
if (q) {
switch (size) {
case 0:
gen_helper_neon_qunzip8(cpu_env, tmp, tmp2);
break;
case 1:
gen_helper_neon_qunzip16(cpu_env, tmp, tmp2);
break;
case 2:
gen_helper_neon_qunzip32(cpu_env, tmp, tmp2);
break;
default:
abort();
}
} else {
switch (size) {
case 0:
gen_helper_neon_unzip8(cpu_env, tmp, tmp2);
break;
case 1:
gen_helper_neon_unzip16(cpu_env, tmp, tmp2);
break;
default:
abort();
}
}
tcg_temp_free_i32(tmp);
tcg_temp_free_i32(tmp2);
return 0;
}
static void gen_neon_zip_u8(TCGv t0, TCGv t1)
......@@ -3705,25 +3708,6 @@ static void gen_neon_zip_u16(TCGv t0, TCGv t1)
dead_tmp(tmp);
}
static void gen_neon_unzip(int reg, int q, int tmp, int size)
{
int n;
TCGv t0, t1;
for (n = 0; n < q + 1; n += 2) {
t0 = neon_load_reg(reg, n);
t1 = neon_load_reg(reg, n + 1);
switch (size) {
case 0: gen_neon_unzip_u8(t0, t1); break;
case 1: gen_neon_zip_u16(t0, t1); break; /* zip and unzip are the same. */
case 2: /* no-op */; break;
default: abort();
}
neon_store_scratch(tmp + n, t0);
neon_store_scratch(tmp + n + 1, t1);
}
}
static void gen_neon_trn_u8(TCGv t0, TCGv t1)
{
TCGv rd, tmp;
......@@ -5440,30 +5424,8 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn)
}
break;
case 34: /* VUZP */
/* Reg Before After
Rd A3 A2 A1 A0 B2 B0 A2 A0
Rm B3 B2 B1 B0 B3 B1 A3 A1
*/
if (size == 3)
if (gen_neon_unzip(rd, rm, size, q)) {
return 1;
gen_neon_unzip(rd, q, 0, size);
gen_neon_unzip(rm, q, 4, size);
if (q) {
static int unzip_order_q[8] =
{0, 2, 4, 6, 1, 3, 5, 7};
for (n = 0; n < 8; n++) {
int reg = (n < 4) ? rd : rm;
tmp = neon_load_scratch(unzip_order_q[n]);
neon_store_reg(reg, n % 4, tmp);
}
} else {
static int unzip_order[4] =
{0, 4, 1, 5};
for (n = 0; n < 4; n++) {
int reg = (n < 2) ? rd : rm;
tmp = neon_load_scratch(unzip_order[n]);
neon_store_reg(reg, n % 2, tmp);
}
}
break;
case 35: /* VZIP */
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment