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loader: Setup the TLS register on x86-64 for stack protector checks.

This commit is contained in:
Alexandre Julliard 2010-12-21 19:38:27 +01:00
parent 0b6bfade52
commit 7e112c2917
1 changed files with 7 additions and 1 deletions
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8
loader/preloader.c
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@ -344,6 +344,8 @@ static inline int wld_prctl( int code, long arg )
#elif defined(__x86_64__)
void *thread_data[256];
/*
* The _start function is the entry and exit point of this program
*
@ -355,8 +357,12 @@ extern char _end[];
__ASM_GLOBAL_FUNC(_start,
"movq %rsp,%rax\n\t"
"leaq -144(%rsp),%rsp\n\t" /* allocate some space for extra aux values */
"movq %rax,(%rsp)\n\t" /* orig stack pointer */
"movq $thread_data,%rsi\n\t"
"movq $0x1002,%rdi\n\t" /* ARCH_SET_FS */
"movq $158,%rax\n\t" /* SYS_arch_prctl */
"syscall\n\t"
"movq %rsp,%rdi\n\t" /* ptr to orig stack pointer */
"movq %rax,(%rdi)\n\t" /* orig stack pointer */
"call wld_start\n\t"
"movq (%rsp),%rsp\n\t" /* new stack pointer */
"pushq %rax\n\t" /* ELF interpreter entry point */