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x86 asm: intrinsics from memory

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Ciro Santilli 六四事件 法轮功
2019-06-01 00:00:02 +00:00
parent 277f67892b
commit ddae0d52f2
5 changed files with 41 additions and 8 deletions
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6
userland/arch/x86_64/addpd.S
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@@ -6,15 +6,17 @@
#include <lkmc.h>
LKMC_PROLOGUE
.bss
output: .skip 16
.data
.align 16
addps_input0: .float 1.5, 2.5, 3.5, 4.5
addps_input1: .float 5.5, 6.5, 7.5, 8.5
addps_expect: .float 7.0, 9.0, 11.0, 13.0
addpd_input0: .double 1.5, 2.5
addpd_input1: .double 5.5, 6.5
addpd_expect: .double 7.0, 9.0
.bss
.align 16
output: .skip 16
.text
#define TEST(size) \
movups addp ## size ## _input0, %xmm0; \

15
userland/arch/x86_64/intrinsics/addpd.c
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@@ -1,11 +1,16 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-intrinsics */
#include <assert.h>
#include <string.h>
#include <x86intrin.h>
int main(void) {
float global_input0[] __attribute__((aligned(16))) = {1.5f, 2.5f, 3.5f, 4.5f};
float global_input1[] __attribute__((aligned(16))) = {5.5f, 6.5f, 7.5f, 8.5f};
float global_output[4] __attribute__((aligned(16)));
float global_expected[] __attribute__((aligned(16))) = {7.0f, 9.0f, 11.0f, 13.0f};
int main(void) {
/* 32-bit add (addps). */
{
__m128 input0 = _mm_set_ps(1.5f, 2.5f, 3.5f, 4.5f);
@@ -33,6 +38,14 @@ int main(void) {
assert(_mm_cvtss_f32(_mm_shuffle_ps(output, output, 3)) == 7.0f);
}
/* Now from memory. */
{
__m128 *input0 = (__m128 *)global_input0;
__m128 *input1 = (__m128 *)global_input1;
_mm_store_ps(global_output, _mm_add_ps(*input0, *input1));
assert(!memcmp(global_output, global_expected, sizeof(global_output)));
}
/* 64-bit add (addpd). */
{
__m128d input0 = _mm_set_pd(1.5, 2.5);

15
userland/arch/x86_64/intrinsics/paddq.c
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@@ -1,9 +1,16 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-intrinsics */
#include <assert.h>
#include <inttypes.h>
#include <string.h>
#include <x86intrin.h>
uint32_t global_input0[] __attribute__((aligned(16))) = {1, 2, 3, 4};
uint32_t global_input1[] __attribute__((aligned(16))) = {5, 6, 7, 8};
uint32_t global_output[4] __attribute__((aligned(16)));
uint32_t global_expected[] __attribute__((aligned(16))) = {6, 8, 10, 12};
int main(void) {
/* 32-bit add hello world. */
@@ -19,6 +26,14 @@ int main(void) {
assert(_mm_extract_epi32(output, 0) == 12);
}
/* Now from memory. */
{
__m128i *input0 = (__m128i *)global_input0;
__m128i *input1 = (__m128i *)global_input1;
_mm_store_si128((__m128i *)global_output, _mm_add_epi32(*input0, *input1));
assert(!memcmp(global_output, global_expected, sizeof(global_output)));
}
/* Now a bunch of other sizes. */
{
__m128i input0 = _mm_set_epi32(0xF1F1F1F1, 0xF2F2F2F2, 0xF3F3F3F3, 0xF4F4F4F4);

8
userland/arch/x86_64/paddq.S
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@@ -10,6 +10,7 @@
LKMC_PROLOGUE
.data
.align 16
input0: .long 0xF1F1F1F1, 0xF2F2F2F2, 0xF3F3F3F3, 0xF4F4F4F4
input1: .long 0x12121212, 0x13131313, 0x14141414, 0x15151515
paddb_expect: .long 0x03030303, 0x05050505, 0x07070707, 0x09090909
@@ -17,13 +18,14 @@ LKMC_PROLOGUE
paddd_expect: .long 0x04040403, 0x06060605, 0x08080807, 0x0A0A0A09
paddq_expect: .long 0x04040403, 0x06060606, 0x08080807, 0x0A0A0A0A
.bss
.align 16
output: .skip 16
.text
movups input1, %xmm1
movaps input1, %xmm1
#define TEST(size) \
movups input0, %xmm0; \
movaps input0, %xmm0; \
padd ## size %xmm1, %xmm0; \
movups %xmm0, output; \
movaps %xmm0, output; \
LKMC_ASSERT_MEMCMP(output, padd ## size ## _expect, $0x10)
/* 16x 8-bit */