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Merge "Add link.h for all platforms with dl_phdr_info"

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Elliott Hughes 2012-08-17 13:54:43 -07:00 committed by android code review
commit 1771a33d11
5 changed files with 60 additions and 33 deletions
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6
libc/arch-arm/bionic/exidx_dynamic.c
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@ -25,12 +25,8 @@
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
typedef long unsigned int *_Unwind_Ptr;
/* Stubbed out in libdl and defined in the dynamic linker.
* Same semantics as __gnu_Unwind_Find_exidx().
*/
extern _Unwind_Ptr dl_unwind_find_exidx(_Unwind_Ptr pc, int *pcount);
#include <link.h>
/* For a given PC, find the .so that it belongs to.
* Returns the base address of the .ARM.exidx section

3
libc/arch-arm/bionic/exidx_static.c
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@ -25,7 +25,8 @@
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
typedef long unsigned int *_Unwind_Ptr;
#include <link.h>
/* Find the .ARM.exidx section (which in the case of a static executable
* can be identified through its start and end symbols), and return its

11
libc/bionic/dl_iterate_phdr_static.c
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@ -28,16 +28,7 @@
#include <sys/types.h>
#include <linux/elf.h>
/* TODO: Move this into a header that linker.h can also pull it in.
* Silly to have same struct in 2 places. This is temporary. */
struct dl_phdr_info
{
Elf32_Addr dlpi_addr;
const char *dlpi_name;
const Elf32_Phdr *dlpi_phdr;
Elf32_Half dlpi_phnum;
};
#include <link.h>
/* Dynamic binaries get this from the dynamic linker (system/linker), which
* we don't pull in for static bins. We also don't have a list of so's to

55
libc/include/link.h Normal file
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@ -0,0 +1,55 @@
/*
* Copyright (C) 2012 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _LINK_H_
#define _LINK_H_
#include <sys/types.h>
#include <elf.h>
__BEGIN_DECLS
/* bionic is currently only 32-bit. */
#define ElfW(type) Elf32_##type
struct dl_phdr_info {
ElfW(Addr) dlpi_addr;
const char* dlpi_name;
const ElfW(Phdr)* dlpi_phdr;
ElfW(Half) dlpi_phnum;
};
#ifdef __arm__
typedef long unsigned int* _Unwind_Ptr;
_Unwind_Ptr dl_unwind_find_exidx(_Unwind_Ptr pc, int* pcount);
#else
int dl_iterate_phdr(int (*cb)(struct dl_phdr_info*, size_t, void*), void*);
#endif
__END_DECLS
#endif /* _LINK_H_ */

18
linker/linker.h
View file

@ -37,6 +37,7 @@
#ifdef __cplusplus
extern "C" {
#endif
#include <link.h>
#undef PAGE_MASK
#undef PAGE_SIZE
@ -72,16 +73,6 @@ struct link_map
struct link_map * l_prev;
};
/* needed for dl_iterate_phdr to be passed to the callbacks provided */
struct dl_phdr_info
{
Elf32_Addr dlpi_addr;
const char *dlpi_name;
const Elf32_Phdr *dlpi_phdr;
Elf32_Half dlpi_phnum;
};
// Values for r_debug->state
enum {
RT_CONSISTENT,
@ -241,13 +232,6 @@ Elf32_Sym *soinfo_find_symbol(soinfo* si, const void *addr);
Elf32_Sym *soinfo_lookup(soinfo *si, const char *name);
void soinfo_call_constructors(soinfo *si);
#if defined(ANDROID_ARM_LINKER)
typedef long unsigned int *_Unwind_Ptr;
_Unwind_Ptr dl_unwind_find_exidx(_Unwind_Ptr pc, int *pcount);
#elif defined(ANDROID_X86_LINKER) || defined(ANDROID_MIPS_LINKER)
int dl_iterate_phdr(int (*cb)(struct dl_phdr_info *, size_t, void *), void *);
#endif
#ifdef __cplusplus
};
#endif