mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
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c8c4f89854
Previously had wonky line pointer in asm_main. New interface simpler and more portable. Add tests for ASSERT_EQ_ and family in arm and aarch64, previously on x86_64. ASSERT_EQ_ and family in ARM can now either take =123, =addr or var, before this the = was added on macros so var was not possible. Define the main function directly in assembly, the C driver was useless.
39 lines
1.1 KiB
ArmAsm
39 lines
1.1 KiB
ArmAsm
/* https://github.com/cirosantilli/linux-kernel-module-cheat#x86-paddq-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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* The different variants basically determine if carries get forwarded or not.
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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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paddb_expect: .long 0x03030303, 0x05050505, 0x07070707, 0x09090909
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paddw_expect: .long 0x04030403, 0x06050605, 0x08070807, 0x0A090A09
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paddd_expect: .long 0x04040403, 0x06060605, 0x08080807, 0x0A0A0A09
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paddq_expect: .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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movups input1, %xmm1
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#define TEST(size) \
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movups input0, %xmm0; \
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padd ## size %xmm1, %xmm0; \
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movups %xmm0, output; \
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LKMC_ASSERT_MEMCMP(output, padd ## size ## _expect, $0x10)
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/* 16x 8-bit */
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TEST(b)
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/* 8x 4-bit */
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TEST(w)
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/* 4x 8-bit */
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/* 4x long */
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TEST(d)
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/* 2x 16-bit */
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TEST(q)
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#undef TEST
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LKMC_EPILOGUE
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