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authorUlrich Drepper <drepper@redhat.com>2005-01-06 22:40:27 +0000
committerUlrich Drepper <drepper@redhat.com>2005-01-06 22:40:27 +0000
commit9dcafc559763e339d4a79580c333127033e39c11 (patch)
tree342441fed429693bc69d95addc588e10a7d021c4 /sysdeps/x86_64/dl-machine.h
parentf14038f2e295e7994e2317127cdea1cb26db6be1 (diff)
* csu/elf-init.c (__libc_csu_fini): Don't do anything here.
* sysdeps/generic/libc-start.c: Don't register program destructor here. * dlfcn/Makefile: Add rules to build dlfcn.c. (LDFLAGS-dl.so): Removed. * dlfcn/dlclose.c: _dl_close is now in ld.so, use function pointer table. * dlfcn/dlmopen.c: Likewise for _dl_open. * dlfcn/dlopen.c: Likewise. * dlfcn/dlopenold.c: Likewise. * elf/dl-libc.c: Likewise for _dl_open and _dl_close. * elf/Makefile (routines): Remove dl-open and dl-close. (dl-routines): Add dl-open, dl-close, and dl-trampoline. Add rules to build and run tst-audit1. * elf/tst-audit1.c: New file. * elf/tst-auditmod1.c: New file. * elf/Versions [libc]: Remove _dl_open and _dl_close. * elf/dl-close.c: Change for use inside ld.so instead of libc.so. * elf/dl-open.c: Likewise. * elf/dl-debug.c (_dl_debug_initialize): Allow reinitialization, signaled by nonzero parameter. * elf/dl-init.c: Fix use of r_state. * elf/dl-load.c: Likewise. * elf/dl-close.c: Add auditing checkpoints. * elf/dl-open.c: Likewise. * elf/dl-fini.c: Likewise. * elf/dl-load.c: Likewise. * elf/dl-sym.c: Likewise. * sysdeps/generic/libc-start.c: Likewise. * elf/dl-object.c: Allocate memory for auditing information. * elf/dl-reloc.c: Remove RESOLV. We now always need the map. Correctly initialize slotinfo. * elf/dynamic-link.h: Adjust after removal of RESOLV. * sysdeps/hppa/dl-lookupcfg.h: Likewise. * sysdeps/ia64/dl-lookupcfg.h: Likewise. * sysdeps/powerpc/powerpc64/dl-lookupcfg.h: Removed. * elf/dl-runtime.c (_dl_fixup): Little cleanup. (_dl_profile_fixup): New parameters to point to register struct and variable for frame size. Add auditing checkpoints. (_dl_call_pltexit): New function. Don't define trampoline code here. * elf/rtld.c: Recognize LD_AUDIT. Load modules on startup. Remove all the functions from _rtld_global_ro which only _dl_open and _dl_close needed. Add auditing checkpoints. * elf/link.h: Define symbols for auditing interfaces. * include/link.h: Likewise. * include/dlfcn.h: Define __RTLD_AUDIT. Remove prototypes for _dl_open and _dl_close. Adjust access to argc and argv in libdl. * dlfcn/dlfcn.c: New file. * sysdeps/generic/dl-lookupcfg.h: Remove all content now that RESOLVE is gone. * sysdeps/generic/ldsodefs.h: Add definitions for auditing interfaces. * sysdeps/generic/unsecvars.h: Add LD_AUDIT. * sysdeps/i386/dl-machine.h: Remove trampoline code here. Adjust for removal of RESOLVE. * sysdeps/x86_64/dl-machine.h: Likewise. * sysdeps/generic/dl-trampoline.c: New file. * sysdeps/i386/dl-trampoline.c: New file. * sysdeps/x86_64/dl-trampoline.c: New file. * sysdeps/generic/dl-tls.c: Cleanups. Fixup for dtv_t change. Fix updating of DTV. * sysdeps/generic/libc-tls.c: Likewise. * sysdeps/arm/bits/link.h: Renamed to ... * sysdeps/arm/buts/linkmap.h: ...this. * sysdeps/generic/bits/link.h: Renamed to... * sysdeps/generic/bits/linkmap.h: ...this. * sysdeps/hppa/bits/link.h: Renamed to... * sysdeps/hppa/bits/linkmap.h: ...this. * sysdeps/hppa/i386/link.h: Renamed to... * sysdeps/hppa/i386/linkmap.h: ...this. * sysdeps/hppa/ia64/link.h: Renamed to... * sysdeps/hppa/ia64/linkmap.h: ...this. * sysdeps/hppa/s390/link.h: Renamed to... * sysdeps/hppa/s390/linkmap.h: ...this. * sysdeps/hppa/sh/link.h: Renamed to... * sysdeps/hppa/sh/linkmap.h: ...this. * sysdeps/hppa/x86_64/link.h: Renamed to... * sysdeps/hppa/x86_64/linkmap.h: ...this. 2005-01-06 Ulrich Drepper <drepper@redhat.com> * allocatestack.c (init_one_static_tls): Adjust initialization of DTV entry for static tls deallocation fix. * sysdeps/alpha/tls.h (dtv_t): Change pointer type to be struct which also contains information whether the memory pointed to is static TLS or not. * sysdeps/i386/tls.h: Likewise. * sysdeps/ia64/tls.h: Likewise. * sysdeps/powerpc/tls.h: Likewise. * sysdeps/s390/tls.h: Likewise. * sysdeps/sh/tls.h: Likewise. * sysdeps/sparc/tls.h: Likewise. * sysdeps/x86_64/tls.h: Likewise.
Diffstat (limited to 'sysdeps/x86_64/dl-machine.h')
-rw-r--r--sysdeps/x86_64/dl-machine.h136
1 files changed, 10 insertions, 126 deletions
diff --git a/sysdeps/x86_64/dl-machine.h b/sysdeps/x86_64/dl-machine.h
index b932f51d15..18bff95dcd 100644
--- a/sysdeps/x86_64/dl-machine.h
+++ b/sysdeps/x86_64/dl-machine.h
@@ -116,7 +116,8 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
{
got[2] = (Elf64_Addr) &_dl_runtime_profile;
- if (_dl_name_match_p (GLRO(dl_profile), l))
+ if (GLRO(dl_profile) != NULL
+ && _dl_name_match_p (GLRO(dl_profile), l))
/* This is the object we are looking for. Say that we really
want profiling and the timers are started. */
GL(dl_profile_map) = l;
@@ -130,128 +131,6 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
return lazy;
}
-/* This code is used in dl-runtime.c to call the `fixup' function
- and then redirect to the address it returns. */
-#ifndef PROF
-# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\n\
- .text\n\
- .globl _dl_runtime_resolve\n\
- .type _dl_runtime_resolve, @function\n\
- .align 16\n\
- " CFI_STARTPROC "\n\
-_dl_runtime_resolve:\n\
- subq $56,%rsp\n\
- " CFI_ADJUST_CFA_OFFSET(72)" # Incorporate PLT\n\
- movq %rax,(%rsp) # Preserve registers otherwise clobbered.\n\
- movq %rcx,8(%rsp)\n\
- movq %rdx,16(%rsp)\n\
- movq %rsi,24(%rsp)\n\
- movq %rdi,32(%rsp)\n\
- movq %r8,40(%rsp)\n\
- movq %r9,48(%rsp)\n\
- movq 64(%rsp), %rsi # Copy args pushed by PLT in register.\n\
- movq %rsi,%r11 # Multiply by 24\n\
- addq %r11,%rsi\n\
- addq %r11,%rsi\n\
- shlq $3, %rsi\n\
- movq 56(%rsp), %rdi # %rdi: link_map, %rsi: reloc_offset\n\
- call fixup # Call resolver.\n\
- movq %rax, %r11 # Save return value\n\
- movq 48(%rsp),%r9 # Get register content back.\n\
- movq 40(%rsp),%r8\n\
- movq 32(%rsp),%rdi\n\
- movq 24(%rsp),%rsi\n\
- movq 16(%rsp),%rdx\n\
- movq 8(%rsp),%rcx\n\
- movq (%rsp),%rax\n\
- addq $72,%rsp # Adjust stack(PLT did 2 pushes)\n\
- " CFI_ADJUST_CFA_OFFSET(-72)" \n\
- jmp *%r11 # Jump to function address.\n\
- " CFI_ENDPROC "\n\
- .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
-\n\
- .globl _dl_runtime_profile\n\
- .type _dl_runtime_profile, @function\n\
- .align 16\n\
- " CFI_STARTPROC "\n\
-_dl_runtime_profile:\n\
- subq $56,%rsp\n\
- " CFI_ADJUST_CFA_OFFSET(72)" # Incorporate PLT\n\
- movq %rax,(%rsp) # Preserve registers otherwise clobbered.\n\
- movq %rcx,8(%rsp)\n\
- movq %rdx,16(%rsp)\n\
- movq %rsi,24(%rsp)\n\
- movq %rdi,32(%rsp)\n\
- movq %r8,40(%rsp)\n\
- movq %r9,48(%rsp)\n\
- movq 72(%rsp), %rdx # Load return address if needed\n\
- movq 64(%rsp), %rsi # Copy args pushed by PLT in register.\n\
- movq %rsi,%r11 # Multiply by 24\n\
- addq %r11,%rsi\n\
- addq %r11,%rsi\n\
- shlq $3, %rsi\n\
- movq 56(%rsp), %rdi # %rdi: link_map, %rsi: reloc_offset\n\
- call profile_fixup # Call resolver.\n\
- movq %rax, %r11 # Save return value\n\
- movq 48(%rsp),%r9 # Get register content back.\n\
- movq 40(%rsp),%r8\n\
- movq 32(%rsp),%rdi\n\
- movq 24(%rsp),%rsi\n\
- movq 16(%rsp),%rdx\n\
- movq 8(%rsp),%rcx\n\
- movq (%rsp),%rax\n\
- addq $72,%rsp # Adjust stack\n\
- " CFI_ADJUST_CFA_OFFSET(-72)"\n\
- jmp *%r11 # Jump to function address.\n\
- " CFI_ENDPROC "\n\
- .size _dl_runtime_profile, .-_dl_runtime_profile\n\
- .previous\n\
-");
-#else
-# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\n\
- .text\n\
- .globl _dl_runtime_resolve\n\
- .globl _dl_runtime_profile\n\
- .type _dl_runtime_resolve, @function\n\
- .type _dl_runtime_profile, @function\n\
- .align 16\n\
- " CFI_STARTPROC "\n\
-_dl_runtime_resolve:\n\
-_dl_runtime_profile:\n\
- subq $56,%rsp\n\
- " CFI_ADJUST_CFA_OFFSET(72)" # Incorporate PLT\n\
- movq %rax,(%rsp) # Preserve registers otherwise clobbered.\n\
- movq %rcx,8(%rsp)\n\
- movq %rdx,16(%rsp)\n\
- movq %rsi,24(%rsp)\n\
- movq %rdi,32(%rsp)\n\
- movq %r8,40(%rsp)\n\
- movq %r9,48(%rsp)\n\
- movq 64(%rsp), %rsi # Copy args pushed by PLT in register.\n\
- movq %rsi,%r11 # Multiply by 24\n\
- addq %r11,%rsi\n\
- addq %r11,%rsi\n\
- shlq $3, %rsi\n\
- movq 56(%rsp), %rdi # %rdi: link_map, %rsi: reloc_offset\n\
- call fixup # Call resolver.\n\
- movq %rax, %r11 # Save return value\n\
- movq 48(%rsp),%r9 # Get register content back.\n\
- movq 40(%rsp),%r8\n\
- movq 32(%rsp),%rdi\n\
- movq 24(%rsp),%rsi\n\
- movq 16(%rsp),%rdx\n\
- movq 8(%rsp),%rcx\n\
- movq (%rsp),%rax\n\
- addq $72,%rsp # Adjust stack\n\
- " CFI_ADJUST_CFA_OFFSET(-72)"\n\
- jmp *%r11 # Jump to function address.\n\
- " CFI_ENDPROC "\n\
- .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
- .size _dl_runtime_profile, .-_dl_runtime_profile\n\
- .previous\n\
-");
-#endif
-
/* Initial entry point code for the dynamic linker.
The C function `_dl_start' is the real entry point;
its return value is the user program's entry point. */
@@ -348,9 +227,14 @@ elf_machine_plt_value (struct link_map *map, const Elf64_Rela *reloc,
return value;
}
+
+/* Names of the architecture-specific auditing callback functions. */
+#define ARCH_LA_PLTENTER x86_64_gnu_pltenter
+#define ARCH_LA_PLTEXIT x86_64_gnu_pltexit
+
#endif /* !dl_machine_h */
-#ifdef RESOLVE
+#ifdef RESOLVE_MAP
/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
MAP is the object containing the reloc. */
@@ -390,7 +274,7 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
#ifndef RTLD_BOOTSTRAP
const Elf64_Sym *const refsym = sym;
#endif
-#if defined USE_TLS && !defined RTLD_BOOTSTRAP
+#ifndef RTLD_BOOTSTRAP
struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
Elf64_Addr value = (sym == NULL ? 0
: (Elf64_Addr) sym_map->l_addr + sym->st_value);
@@ -553,4 +437,4 @@ elf_machine_lazy_rel (struct link_map *map,
_dl_reloc_bad_type (map, r_type, 1);
}
-#endif /* RESOLVE */
+#endif /* RESOLVE_MAP */