3rd-party/linux-kernel-module-cheat
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assembly SIMD add: make uniform for all ISAs, mark as entry point to learning SIMD

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Ciro Santilli 六四事件 法轮功
2019-05-12 00:00:04 +00:00
parent b14f68f9bf
commit a13e99ec1c
8 changed files with 162 additions and 202 deletions
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32
userland/arch/aarch64/add_vector.S Normal file
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/* https://github.com/cirosantilli/linux-kernel-module-cheat#assembly-simd
*
* Add a bunch of integers in one go.
*/
#include "common.h"
ENTRY
.data
input0: .long 0xF1F1F1F1, 0xF2F2F2F2, 0xF3F3F3F3, 0xF4F4F4F4
input1: .long 0x12121212, 0x13131313, 0x14141414, 0x15151515
expect_4s: .long 0x04040403, 0x06060605, 0x08080807, 0x0A0A0A09
expect_2d: .long 0x04040403, 0x06060606, 0x08080807, 0x0A0A0A0A
.bss
output: .skip 16
.text
#define TEST(size) \
adr x0, input0; \
ld1 {v0. ## size}, [x0]; \
adr x1, input1; \
ld1 {v1. ## size}, [x1]; \
add v2. ## size, v0. ## size, v1. ## size; \
adr x0, output; \
st1 {v2. ## size}, [x0]; \
ASSERT_MEMCMP(output, expect_ ## size, 0x10)
/* 4x 32-bit */
TEST(4s)
/* 2x 64-bit */
TEST(2d)
#undef TEST
EXIT