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Port musl to x86-64. One giant commit!

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Nicholas J. Kain 2011-02-15 07:32:09 -05:00
commit 1e12632591
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crt/x86_64/crt1.s Normal file
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/* Written 2011 Nicholas J. Kain, released as Public Domain */
.text
.global _start
_start:
xor %rbp,%rbp /* rbp:undefined -> mark as zero 0 (ABI) */
mov %rdx,%r9 /* 6th arg: ptr to register with atexit() */
pop %rsi /* 2nd arg: argc */
mov %rsp,%rdx /* 3rd arg: argv */
andq $-16,%rsp /* align stack pointer */
push %rax /* 8th arg: glibc ABI compatible */
push %rsp /* 7th arg: glibc ABI compatible */
xor %r8,%r8 /* 5th arg: always 0 */
xor %rcx,%rcx /* 4th arg: always 0 */
mov $main,%rdi /* 1st arg: application entry ip */
call __libc_start_main /* musl init will run the program */
.L0: jmp .L0