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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-07-22 18:02:42 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-12-28 08:40:38 -0300
commit8c0664e2b861fd3789602cc0b0b1922b0e20cb3a (patch)
tree8c6812231676fd89e69282941d0a59a2087a0ed1 /sysdeps/i386
parenteff687e8462b0eaf65992a6031b54a4b1cd16796 (diff)
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elf: Add _dl_audit_pltexit
It consolidates the code required to call la_pltexit audit callback. Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu. Reviewed-by: Florian Weimer <fweimer@redhat.com>
Diffstat (limited to 'sysdeps/i386')
-rw-r--r--sysdeps/i386/dl-fixup-attribute.h30
-rw-r--r--sysdeps/i386/dl-machine-rel.h2
-rw-r--r--sysdeps/i386/dl-machine.h23
-rw-r--r--sysdeps/i386/dl-trampoline.S2
4 files changed, 33 insertions, 24 deletions
diff --git a/sysdeps/i386/dl-fixup-attribute.h b/sysdeps/i386/dl-fixup-attribute.h
new file mode 100644
index 0000000..c10e9936
--- /dev/null
+++ b/sysdeps/i386/dl-fixup-attribute.h
@@ -0,0 +1,30 @@
+/* ABI specifics for lazy resolution functions. i386 version.
+ Copyright (C) 2021 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _DL_FIXUP_ATTRIBUTE_H
+#define _DL_FIXUP_ATTRIBUTE_H
+
+/* We cannot use this scheme for profiling because the _mcount call destroys
+ the passed register information. */
+#ifndef PROF
+# define DL_ARCH_FIXUP_ATTRIBUTE __attribute__ ((regparm (3), stdcall, unused))
+#else
+# define DL_ARCH_FIXUP_ATTRIBUTE
+#endif
+
+#endif
diff --git a/sysdeps/i386/dl-machine-rel.h b/sysdeps/i386/dl-machine-rel.h
index 7ac46f7..bb3480d 100644
--- a/sysdeps/i386/dl-machine-rel.h
+++ b/sysdeps/i386/dl-machine-rel.h
@@ -28,4 +28,6 @@
Prelinked libraries may use Elf32_Rela though. */
#define ELF_MACHINE_PLT_REL 1
+#define PLTREL ElfW(Rel)
+
#endif
diff --git a/sysdeps/i386/dl-machine.h b/sysdeps/i386/dl-machine.h
index 169bed5..2f0dbc2 100644
--- a/sysdeps/i386/dl-machine.h
+++ b/sysdeps/i386/dl-machine.h
@@ -115,29 +115,6 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
return lazy;
}
-#ifdef IN_DL_RUNTIME
-
-# ifndef PROF
-/* We add a declaration of this function here so that in dl-runtime.c
- the ELF_MACHINE_RUNTIME_TRAMPOLINE macro really can pass the parameters
- in registers.
-
- We cannot use this scheme for profiling because the _mcount call
- destroys the passed register information. */
-#define ARCH_FIXUP_ATTRIBUTE __attribute__ ((regparm (3), stdcall, unused))
-
-extern ElfW(Addr) _dl_fixup (struct link_map *l,
- ElfW(Word) reloc_offset)
- ARCH_FIXUP_ATTRIBUTE;
-extern ElfW(Addr) _dl_profile_fixup (struct link_map *l,
- ElfW(Word) reloc_offset,
- ElfW(Addr) retaddr, void *regs,
- long int *framesizep)
- ARCH_FIXUP_ATTRIBUTE;
-# endif
-
-#endif
-
/* Mask identifying addresses reserved for the user program,
where the dynamic linker should not map anything. */
#define ELF_MACHINE_USER_ADDRESS_MASK 0xf0000000UL
diff --git a/sysdeps/i386/dl-trampoline.S b/sysdeps/i386/dl-trampoline.S
index 5669ab1..1e555de 100644
--- a/sysdeps/i386/dl-trampoline.S
+++ b/sysdeps/i386/dl-trampoline.S
@@ -252,7 +252,7 @@ _dl_runtime_profile:
movl (LRV_SIZE + 4 + LR_SIZE)(%esp), %eax
# PLT1
movl (LRV_SIZE + 4 + LR_SIZE + 4)(%esp), %edx
- call _dl_call_pltexit
+ call _dl_audit_pltexit
movl LRV_EAX_OFFSET(%esp), %eax
movl LRV_EDX_OFFSET(%esp), %edx
fldt LRV_ST1_OFFSET(%esp)