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2be87702b7
looks like nik copied these "extra arguments" from the i386 code. they're not actually arguments there, just 1-byte instructions to make sure the stack is aligned to 16 bytes after all the other arguments are pushed. since each push is 8 bytes on x86_64, they happened to have no effect here, but their presence is confusing and a minor waste of space.
17 lines
584 B
ArmAsm
17 lines
584 B
ArmAsm
/* Written 2011 Nicholas J. Kain, released as Public Domain */
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.weak _init
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.weak _fini
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.text
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.global _start
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_start:
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xor %rbp,%rbp /* rbp:undefined -> mark as zero 0 (ABI) */
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mov %rdx,%r9 /* 6th arg: ptr to register with atexit() */
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pop %rsi /* 2nd arg: argc */
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mov %rsp,%rdx /* 3rd arg: argv */
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andq $-16,%rsp /* align stack pointer */
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mov $_fini,%r8 /* 5th arg: fini/dtors function */
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mov $_init,%rcx /* 4th arg: init/ctors function */
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mov $main,%rdi /* 1st arg: application entry ip */
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call __libc_start_main /* musl init will run the program */
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1: jmp 1b
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