From a6e4ee919ae3259692833d24ef8ed02b462d7bb1 Mon Sep 17 00:00:00 2001
From: Ivan Maidanski <ivmai@mail.ru>
Date: Sat, 9 Nov 2013 11:56:35 +0400
Subject: [PATCH] Fix dyn_load.c compilation for Android 4.3
* dyn_load.c (struct link_map, r_debug): Define explicitly (matching
that of Android 4.2 Bionic) instead of include linker.h (only if
PLATFORM_ANDROID); remove workaround enabled by
BIONIC_ELFDATA_REDEF_BUG regarding ELF_DATA redefinition (as linker.h
is not included); update comment.
---
dyn_load.c | 33 +++++++++++++++++++--------------
1 file changed, 19 insertions(+), 14 deletions(-)
diff --git a/dyn_load.c b/dyn_load.c
index 215967e9..866d73f6 100644
--- a/dyn_load.c
+++ b/dyn_load.c
@@ -96,22 +96,27 @@ STATIC GC_has_static_roots_func GC_has_static_roots = 0;
/* Exclude Android because linker.h below includes its own version. */
# include <elf.h>
# endif
-# ifdef PLATFORM_ANDROID
- /* The header file is in "bionic/linker" folder of Android sources. */
+# include <link.h>
+# if defined(PLATFORM_ANDROID) && !defined(GC_DONT_DEFINE_LINK_MAP)
/* If you don't need the "dynamic loading" feature, you may build */
/* the collector with -D IGNORE_DYNAMIC_LOADING. */
-# ifdef BIONIC_ELFDATA_REDEF_BUG
- /* Workaround a problem in Android 4.1 (and 4.2) Bionic which has */
- /* mismatching ELF_DATA definitions in sys/exec_elf.h and */
- /* asm/elf.h included from linker.h file (similar to EM_ALPHA). */
-# include <asm/elf.h>
-# include <linux/elf-em.h>
-# undef ELF_DATA
-# undef EM_ALPHA
-# endif
-# include <linker.h>
-# else
-# include <link.h>
+ /* Otherwise, link_map and r_debug should be defined explicitly, */
+ /* as only bionic/linker/linker.h defines them but the header */
+ /* itself is a C++ one starting from Android 4.3. */
+ struct link_map {
+ uintptr_t l_addr;
+ char* l_name;
+ uintptr_t l_ld;
+ struct link_map* l_next;
+ struct link_map* l_prev;
+ };
+ struct r_debug {
+ int32_t r_version;
+ struct link_map* r_map;
+ void (*r_brk)(void);
+ int32_t r_state;
+ uintptr_t r_ldbase;
+ };
# endif
#endif
--
2.49.0