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33 lines
860 B
ArmAsm
33 lines
860 B
ArmAsm
/* https://cirosantilli.com/linux-kernel-module-cheat#armv8-aarch64-add-vector-instruction
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*
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* Add a bunch of integers in one go.
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*/
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#include <lkmc.h>
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LKMC_PROLOGUE
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.data
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input0: .long 0xF1F1F1F1, 0xF2F2F2F2, 0xF3F3F3F3, 0xF4F4F4F4
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input1: .long 0x12121212, 0x13131313, 0x14141414, 0x15151515
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expect_4s: .long 0x04040403, 0x06060605, 0x08080807, 0x0A0A0A09
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expect_2d: .long 0x04040403, 0x06060606, 0x08080807, 0x0A0A0A0A
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.bss
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output: .skip 16
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.text
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#define TEST(size) \
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adr x0, input0; \
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ld1 {v0. ## size}, [x0]; \
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adr x1, input1; \
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ld1 {v1. ## size}, [x1]; \
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add v2. ## size, v0. ## size, v1. ## size; \
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adr x0, output; \
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st1 {v2. ## size}, [x0]; \
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LKMC_ASSERT_MEMCMP(output, expect_ ## size, =0x10)
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/* 4x 32-bit */
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TEST(4s)
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/* 2x 64-bit */
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TEST(2d)
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#undef TEST
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LKMC_EPILOGUE
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