30 lines
934 B
ArmAsm
30 lines
934 B
ArmAsm
.global _start, syscall5
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_start:
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/* Load argc -> rdi, argv[0] -> rsi */
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xor %rbp, %rbp
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pop %rdi
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mov %rsp, %rsi
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and $0xFFFFFFFFFFFFFFF0, %rsp
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call main
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/* Exit with ret val of main */
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mov %rax, %rdi
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mov $0x3C, %rax
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syscall
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syscall5:
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mov %rdi, %rax /* %rax (syscall number) = func param 1 (%rdi) */
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mov %rsi, %rdi /* %rdi (syscall param 1) = func param 2 (%rsi) */
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mov %rdx, %rsi /* %rsi (syscall param 2) = func param 3 (%rdx) */
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mov %rcx, %rdx /* %rdx (syscall param 3) = func param 4 (%rcx) */
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mov %r8, %r10 /* %r10 (syscall param 4) = func param 5 (%r8) */
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mov %r9, %r8 /* %r8 (syscall param 5) = func param 6 (%r9) */
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syscall /* Enter a syscall (return value in %rax) */
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ret /* Return value is already in %rax, we can return. */
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.section .note.GNU-stack,"",@progbits
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