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authorEric Andersen <andersen@codepoet.org>2003-08-19 06:05:34 +0000
committerEric Andersen <andersen@codepoet.org>2003-08-19 06:05:34 +0000
commitbca6a155c79147f706242ed7c590a3538e407a40 (patch)
tree17c7d7784edc61f3984fb3255672f3ecfe826d22 /ldso/include/ld_elf.h
parentfd47fd4039cadf42620bbfce43c3a0338e23ee26 (diff)
Phase one of my evil plan to clean up ld.so...
Diffstat (limited to 'ldso/include/ld_elf.h')
-rw-r--r--ldso/include/ld_elf.h91
1 files changed, 91 insertions, 0 deletions
diff --git a/ldso/include/ld_elf.h b/ldso/include/ld_elf.h
new file mode 100644
index 000000000..95de118f5
--- /dev/null
+++ b/ldso/include/ld_elf.h
@@ -0,0 +1,91 @@
+#ifndef LINUXELF_H
+#define LINUXELF_H
+
+#include <ld_sysdep.h> /* before elf.h to get ELF_USES_RELOCA right */
+#include <elf.h>
+#include <link.h>
+
+#ifdef DEBUG
+# define LDSO_CONF "../util/ld.so.conf"
+# define LDSO_CACHE "../util/ld.so.cache"
+# define LDSO_PRELOAD "../util/ld.so.preload"
+#else
+# define LDSO_CONF UCLIBC_TARGET_PREFIX "etc/ld.so.conf"
+# define LDSO_CACHE UCLIBC_TARGET_PREFIX "etc/ld.so.cache"
+# define LDSO_PRELOAD UCLIBC_TARGET_PREFIX "etc/ld.so.preload"
+#endif
+
+
+#define LIB_ANY -1
+#define LIB_DLL 0
+#define LIB_ELF 1
+#define LIB_ELF_LIBC5 2
+#define LIB_ELF_LIBC6 3
+#define LIB_ELF64 0x80
+
+/* Forward declarations for stuff defined in ld_hash.h */
+struct dyn_elf;
+struct elf_resolve;
+
+
+/* Definitions and prototypes for cache stuff */
+#ifdef USE_CACHE
+extern int _dl_map_cache(void);
+extern int _dl_unmap_cache(void);
+
+#define LDSO_CACHE_MAGIC "ld.so-"
+#define LDSO_CACHE_MAGIC_LEN (sizeof LDSO_CACHE_MAGIC -1)
+#define LDSO_CACHE_VER "1.7.0"
+#define LDSO_CACHE_VER_LEN (sizeof LDSO_CACHE_VER -1)
+
+typedef struct {
+ char magic [LDSO_CACHE_MAGIC_LEN];
+ char version [LDSO_CACHE_VER_LEN];
+ int nlibs;
+} header_t;
+
+typedef struct {
+ int flags;
+ int sooffset;
+ int liboffset;
+} libentry_t;
+
+#else
+static inline void _dl_map_cache(void) { }
+static inline void _dl_unmap_cache(void) { }
+#endif
+
+
+/* Function prototypes for non-static stuff in readelflib1.c */
+int _dl_copy_fixups(struct dyn_elf * tpnt);
+extern int _dl_parse_copy_information(struct dyn_elf *rpnt,
+ unsigned long rel_addr, unsigned long rel_size, int type);
+extern void _dl_parse_lazy_relocation_information(struct elf_resolve *tpnt,
+ unsigned long rel_addr, unsigned long rel_size, int type);
+extern int _dl_parse_relocation_information(struct elf_resolve *tpnt,
+ unsigned long rel_addr, unsigned long rel_size, int type);
+extern struct elf_resolve * _dl_load_shared_library(int secure,
+ struct dyn_elf **rpnt, struct elf_resolve *tpnt, char *full_libname);
+extern struct elf_resolve * _dl_load_elf_shared_library(int secure,
+ struct dyn_elf **rpnt, char *libname);
+extern int _dl_linux_resolve(void);
+
+
+/*
+ * Datatype of a relocation on this platform
+ */
+#ifdef ELF_USES_RELOCA
+# define ELF_RELOC ElfW(Rela)
+#else
+# define ELF_RELOC ElfW(Rel)
+#endif
+
+
+/* Convert between the Linux flags for page protections and the
+ ones specified in the ELF standard. */
+#define LXFLAGS(X) ( (((X) & PF_R) ? PROT_READ : 0) | \
+ (((X) & PF_W) ? PROT_WRITE : 0) | \
+ (((X) & PF_X) ? PROT_EXEC : 0))
+
+
+#endif /* LINUXELF_H */