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fix initial stack alignment in new threads on x86_64

This commit is contained in:
Rich Felker 2011-04-22 18:48:57 -04:00
parent cbb65af6ae
commit e6cc1d6c0e
1 changed files with 1 additions and 1 deletions
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2
src/thread/x86_64/clone.s
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@ -5,7 +5,7 @@
/* rdi = child_stack, rsi = start, rdx = pthread_struct */ /* rdi = child_stack, rsi = start, rdx = pthread_struct */
__uniclone: __uniclone:
subq $8,%rsp /* pad parent stack to prevent branch later */ subq $8,%rsp /* pad parent stack to prevent branch later */
subq $16,%rdi /* grow child_stack */ subq $24,%rdi /* grow child_stack */
mov %rsi,8(%rdi) /* push start onto child_stack as return ptr */ mov %rsi,8(%rdi) /* push start onto child_stack as return ptr */
mov %rdx,0(%rdi) /* push pthread_struct onto child_stack */ mov %rdx,0(%rdi) /* push pthread_struct onto child_stack */
mov %rdx,%r8 /* r8 = tls */ mov %rdx,%r8 /* r8 = tls */