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Don't confuse unwinder by loading mangled values in %rbp and %rsp registers and by wrong cfi.

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This commit is contained in:
Ulrich Drepper 2005-12-28 16:35:33 +00:00
parent ef226fecbe
commit ff8fecbe42
1 changed files with 13 additions and 10 deletions
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23
sysdeps/x86_64/__longjmp.S
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@ -27,18 +27,26 @@
void __longjmp (__jmp_buf env, int val). */
ENTRY(__longjmp)
/* Restore registers. */
movq (JB_RSP*8)(%rdi),%r8
movq (JB_RBP*8)(%rdi),%r9
movq (JB_PC*8)(%rdi),%rdx
#ifdef PTR_DEMANGLE
PTR_DEMANGLE (%r8)
PTR_DEMANGLE (%r9)
PTR_DEMANGLE (%rdx)
#endif
/* We add unwind information for the target here. */
cfi_def_cfa(%rdi, 0)
cfi_register(%rsp,%r8)
cfi_register(%rbp,%r9)
cfi_register(%rip,%rdx)
cfi_offset(%rbx,JB_RBX*8)
cfi_offset(%rbp,JB_RBP*8)
cfi_offset(%r12,JB_R12*8)
cfi_offset(%r13,JB_R13*8)
cfi_offset(%r14,JB_R14*8)
cfi_offset(%r15,JB_R15*8)
cfi_offset(%rsp,JB_RSP*8)
cfi_offset(%rip,JB_PC*8)
movq (JB_RBX*8)(%rdi),%rbx
movq (JB_RBP*8)(%rdi),%rbp
movq (JB_R12*8)(%rdi),%r12
movq (JB_R13*8)(%rdi),%r13
movq (JB_R14*8)(%rdi),%r14
@ -48,12 +56,7 @@ ENTRY(__longjmp)
mov $01,%eax
cmove %eax,%esi
mov %esi, %eax
movq (JB_PC*8)(%rdi),%rdx
movq (JB_RSP*8)(%rdi),%rsp
#ifdef PTR_DEMANGLE
PTR_DEMANGLE (%rbp)
PTR_DEMANGLE (%rsp)
PTR_DEMANGLE (%rdx)
#endif
movq %r8,%rsp
movq %r9,%rbp
jmpq *%rdx
END (BP_SYM (__longjmp))