From 827b70873b41363c864fb65e99829204595d0f85 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sun, 18 Dec 2005 06:58:22 +0000 Subject: * elf/Versions [GLIBC_PRIVATE]: Export __pointer_chk_guard if defined. * elf/rtld.c: Define __pointer_chk_guard_local and if necessary __pointer_chk_guard. (_rtld_global_ro): Initialize _dl_pointer_guard. (dl_main): Initialize __pointer_chk_guard_local and either __pointer_chk_guard or TLS value if necessary. (process_envvars): Recognize and handle LD_POINTER_GUARD. * sysdeps/generic/ldsodefs.h (rtld_global_ro): Add _dl_pointer_guard. * sysdeps/i386/__longjmp.S: Use PTR_DEMANGLE for PC if defined. * sysdeps/x86_64/__longjmp.S: Likewise. * sysdeps/i386/bsd-_setjmp.S: Use PTR_MANGLE for PC if defined. * sysdeps/i386/bsd-_setjmp.S: Likewise. * sysdeps/i386/setjmp.S: Likewise. [IS_IN_rtld]: Avoid call to __sigjmp_save. * sysdeps/i386/setjmp.S: Likewise. * sysdeps/unix/sysv/linux/i386/sysdep.h: Define PTR_MANGLE and PTR_DEMANGLE. * sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise. * sysdeps/i386/elf/setjmp.S: Removed. * sysdeps/i386/elf/bsd-setjmp.S: Removed. --- sysdeps/x86_64/__longjmp.S | 5 ++++- sysdeps/x86_64/setjmp.S | 15 ++++++++++++--- 2 files changed, 16 insertions(+), 4 deletions(-) (limited to 'sysdeps/x86_64') diff --git a/sysdeps/x86_64/__longjmp.S b/sysdeps/x86_64/__longjmp.S index 9ed480c540..becfb4f79d 100644 --- a/sysdeps/x86_64/__longjmp.S +++ b/sysdeps/x86_64/__longjmp.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2001, 2004 Free Software Foundation, Inc. +/* Copyright (C) 2001, 2004, 2005 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -50,5 +50,8 @@ ENTRY(__longjmp) mov %esi, %eax movq (JB_PC*8)(%rdi),%rdx movq (JB_RSP*8)(%rdi),%rsp +#ifdef PTR_DEMANGLE + PTR_DEMANGLE (%rdx) +#endif jmpq *%rdx END (BP_SYM (__longjmp)) diff --git a/sysdeps/x86_64/setjmp.S b/sysdeps/x86_64/setjmp.S index 811ab1d913..8af5502042 100644 --- a/sysdeps/x86_64/setjmp.S +++ b/sysdeps/x86_64/setjmp.S @@ -1,5 +1,5 @@ /* setjmp for x86-64. - Copyright (C) 2001, 2003 Free Software Foundation, Inc. + Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -34,13 +34,22 @@ ENTRY (__sigsetjmp) leaq 8(%rsp), %rdx /* Save SP as it will be after we return. */ movq %rdx, (JB_RSP*8)(%rdi) movq (%rsp), %rax /* Save PC we are returning to now. */ +#ifdef PTR_MANGLE + PTR_MANGLE (%rax) +#endif movq %rax, (JB_PC*8)(%rdi) +#if defined NOT_IN_libc && defined IS_IN_rtld + /* In ld.so we never save the signal mask. */ + xorl %eax, %eax + retq +#else /* Make a tail call to __sigjmp_save; it takes the same args. */ -#ifdef PIC +# ifdef PIC jmp C_SYMBOL_NAME (BP_SYM (__sigjmp_save))@PLT -#else +# else jmp BP_SYM (__sigjmp_save) +# endif #endif END (BP_SYM (__sigsetjmp)) hidden_def (__sigsetjmp) -- cgit 1.4.1