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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.
35 lines
854 B
ArmAsm
35 lines
854 B
ArmAsm
/* https://github.com/cirosantilli/linux-kernel-module-cheat#armv8-aarch64-fadd-vector-instruction
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*
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* Add a bunch of floating point numbers 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_4s: .float 1.5, 2.5, 3.5, 4.5
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input1_4s: .float 5.5, 6.5, 7.5, 8.5
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expect_4s: .float 7.0, 9.0, 11.0, 13.0
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input0_2d: .double 1.5, 2.5
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input1_2d: .double 5.5, 6.5
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expect_2d: .double 7.0, 9.0
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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_ ## size; \
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ld1 {v0. ## size}, [x0]; \
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adr x1, input1_ ## size; \
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ld1 {v1. ## size}, [x1]; \
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fadd 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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