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-rw-r--r--trunk/src/rtld/rtld.h295
1 files changed, 295 insertions, 0 deletions
diff --git a/trunk/src/rtld/rtld.h b/trunk/src/rtld/rtld.h
new file mode 100644
index 0000000..b38fc9d
--- /dev/null
+++ b/trunk/src/rtld/rtld.h
@@ -0,0 +1,295 @@
+#ifndef _LD_LIBS_H
+#define _LD_LIBS_H
+
+#include "prelinktab.h"
+
+#include <elf.h>
+
+#if !defined (__linux__)
+#define DT_VERSIONTAGNUM 16
+#endif
+
+struct needed_list
+{
+ struct dso_list *ent;
+ struct needed_list *next;
+};
+
+struct dso_list
+{
+ DSO *dso;
+ struct ldlibs_link_map *map;
+ struct dso_list *next, *prev;
+ struct needed_list *needed, *needed_tail;
+ const char *name;
+ struct dso_list *loader;
+ const char *canon_filename;
+ int err_no;
+};
+
+/* A data structure for a simple single linked list of strings. */
+struct libname_list
+ {
+ const char *name; /* Name requested (before search). */
+ struct libname_list *next; /* Link to next name for this object. */
+ };
+
+struct ldlibs_link_map;
+
+struct r_scope_elem
+{
+ struct ldlibs_link_map **r_list;
+ unsigned int r_nlist;
+};
+
+struct r_found_version
+ {
+ const char *name;
+ Elf64_Word hash;
+
+ int hidden;
+ const char *filename;
+ };
+
+struct unique_sym_table
+ {
+ struct unique_sym
+ {
+ uint32_t hashval;
+ const char *name;
+ const void *sym;
+ struct link_map *map;
+ } *entries;
+ size_t size;
+ size_t n_elements;
+ void (*free) (void *);
+ };
+
+extern struct unique_sym_table * _ns_unique_sym_table;
+
+/* The size of entries in .hash. Only Alpha and 64-bit S/390 use 64-bit
+ entries; those are not currently supported. */
+typedef uint32_t Elf_Symndx;
+
+/* Mimic libc/include/link.h struct link_map */
+
+struct ldlibs_link_map
+ {
+ int elfclass;
+
+ const char *l_name;
+
+ struct libname_list *l_libname;
+
+#undef DT_THISPROCNUM
+#define DT_THISPROCNUM 0
+
+ void *l_info[DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGNUM
+ + DT_EXTRANUM + DT_VALNUM + DT_ADDRNUM];
+
+ /* Array with vesion names. */
+ struct r_found_version *l_versions;
+ unsigned int l_nversions;
+
+ /* Symbol hash table. */
+ Elf_Symndx l_nbuckets;
+ /* Begin PPC64 workaround */
+ void *l_buckets_start;
+ void *l_buckets_end;
+ /* end workaround */
+ Elf32_Word l_gnu_bitmask_idxbits;
+ Elf32_Word l_gnu_shift;
+ void *l_gnu_bitmask;
+ union
+ {
+ const Elf32_Word *l_gnu_buckets;
+ const Elf_Symndx *l_chain;
+ };
+ union
+ {
+ const Elf32_Word *l_gnu_chain_zero;
+ const Elf_Symndx *l_buckets;
+ };
+
+ enum /* Where this object came from. */
+ {
+ lt_executable, /* The main executable program. */
+ lt_library, /* Library needed by main executable. */
+ lt_loaded /* Extra run-time loaded shared object. */
+ } l_type:2;
+
+ /* Pointer to the version information if available. */
+ Elf64_Versym *l_versyms;
+
+ /* Start and finish of memory map for this object. l_map_start
+ need not be the same as l_addr. */
+ Elf64_Addr l_map_start;
+
+ /* A similar array, this time only with the local scope. This is
+ used occasionally. */
+ struct r_scope_elem *l_local_scope[2];
+
+ /* Thread-local storage related info. */
+
+ /* Size of the TLS block. */
+ uint64_t l_tls_blocksize;
+ /* Alignment requirement of the TLS block. */
+ uint64_t l_tls_align;
+ /* Offset of first byte module alignment. */
+ uint64_t l_tls_firstbyte_offset;
+
+ /* For objects present at startup time: offset in the static TLS block. */
+ uint64_t l_tls_offset;
+ /* Index of the module in the dtv array. */
+ uint64_t l_tls_modid;
+
+ Elf64_Addr sym_base;
+ const char *filename;
+
+ Elf64_Half machine;
+ };
+
+#define ELF_RTYPE_CLASS_COPY 2
+#define ELF_RTYPE_CLASS_PLT 1
+
+#define GL(x) _##x
+#define GLRO(x) _##x
+#define INTUSE(x) x
+
+#define D_PTR(MAP,MEM) MAP->MEM
+#define VERSYMIDX(sym) (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGIDX (sym))
+
+extern unsigned int _dl_debug_mask;
+extern unsigned int _dl_dynamic_weak;
+
+extern const char *rtld_progname;
+#define _dl_debug_printf printf
+
+#define GLRO_dl_debug_mask _dl_debug_mask
+#define DL_DEBUG_FILES 2
+#define DL_DEBUG_SYMBOLS 4
+#define DL_DEBUG_VERSIONS 8
+#define DL_DEBUG_BINDINGS 16
+#define DL_DEBUG_PRELINK 1
+
+#define _dl_trace_prelink_map requested_map
+
+extern struct ldlibs_link_map *requested_map;
+
+#define __builtin_expect(a,b) (a)
+
+/* dl-load.c */
+
+#define _dl_new_object rtld_new_object
+
+struct ldlibs_link_map * _dl_new_object (const char *realname, const char *libname, int type);
+
+/* dl-lookup.c */
+
+#define lookup_t struct ldlibs_link_map *
+#define LOOKUP_VALUE(map) map
+
+/* Search loaded objects' symbol tables for a definition of the symbol
+ referred to by UNDEF. *SYM is the symbol table entry containing the
+ reference; it is replaced with the defining symbol, and the base load
+ address of the defining object is returned. SYMBOL_SCOPE is a
+ null-terminated list of object scopes to search; each object's
+ l_searchlist (i.e. the segment of the dependency tree starting at that
+ object) is searched in turn. REFERENCE_NAME should name the object
+ containing the reference; it is used in error messages.
+ TYPE_CLASS describes the type of symbol we are looking for. */
+enum
+ {
+ /* If necessary add dependency between user and provider object. */
+ DL_LOOKUP_ADD_DEPENDENCY = 1,
+ /* Return most recent version instead of default version for
+ unversioned lookup. */
+ DL_LOOKUP_RETURN_NEWEST = 2,
+ /* Set if dl_lookup* called with GSCOPE lock held. */
+ DL_LOOKUP_GSCOPE_LOCK = 4,
+ };
+
+#define _dl_setup_hash rtld_setup_hash
+void _dl_setup_hash (struct ldlibs_link_map *map);
+
+#define _dl_lookup_symbol_x32 rtld_lookup_symbol_x32
+#define _dl_lookup_symbol_x64 rtld_lookup_symbol_x64
+
+/* Lookup versioned symbol. */
+inline lookup_t _dl_lookup_symbol_x (const char *undef,
+ struct ldlibs_link_map *undef_map,
+ const Elf64_Sym **sym,
+ struct r_scope_elem *symbol_scope[],
+ const struct r_found_version *version,
+ int type_class, int flags,
+ struct ldlibs_link_map *skip_map);
+
+/* Lookup versioned symbol. */
+lookup_t _dl_lookup_symbol_x32 (const char *undef,
+ struct ldlibs_link_map *undef_map,
+ const Elf32_Sym **sym,
+ struct r_scope_elem *symbol_scope[],
+ const struct r_found_version *version,
+ int type_class, int flags,
+ struct ldlibs_link_map *skip_map);
+
+/* Lookup versioned symbol. */
+lookup_t _dl_lookup_symbol_x64 (const char *undef,
+ struct ldlibs_link_map *undef_map,
+ const Elf64_Sym **sym,
+ struct r_scope_elem *symbol_scope[],
+ const struct r_found_version *version,
+ int type_class, int flags,
+ struct ldlibs_link_map *skip_map);
+
+/* dl-version.c */
+
+#define _dl_check_map_versions rtld_check_map_versions
+int _dl_check_map_versions (struct ldlibs_link_map *map, int verbose, int trace_mode);
+
+#define _dl_name_match_p rtld_name_match_p
+int _dl_name_match_p (const char *name, const struct ldlibs_link_map *map);
+
+/* Error handling */
+
+#include <error.h>
+#include <errno.h>
+
+/* Mimic the behavior and output of _dl_signal_error */
+#define rtld_signal_error(errcode, objname, occation, errstring, status) \
+ error(status, errcode, "%s: %s%s%s", \
+ occation ?: "error while loading shared libraries", \
+ objname ?: "", (objname && *(char *)objname) ? ": " : "", \
+ errstring ?: "DYNAMIC LINKER BUG!!!")
+
+#define _dl_signal_error(errcode, objname, occation, errstring) rtld_signal_error(errcode, objname, occation, errstring, 1)
+#define _dl_signal_cerror(errcode, objname, occation, errstring) rtld_signal_error(errcode, objname, occation, errstring, 0)
+#define _dl_fatal_printf(errstring) rtld_signal_error(EINVAL, NULL, NULL, errstring, 1)
+
+/* dl-load.c */
+
+extern void create_map_object_from_dso_ent (struct dso_list *);
+
+/* dl-tls.c */
+
+void rtld_determine_tlsoffsets (int e_machine, struct r_scope_elem *search_list);
+
+#define _dl_determine_tlsoffsets rtld_determine_tlsoffsets
+
+/* dl-misc.c */
+
+#define _dl_name_match_p rtld_name_match_p
+#define _dl_higher_prime_number rtld_higher_prime_number
+
+extern int _dl_name_match_p (const char *name, const struct ldlibs_link_map *map);
+extern unsigned long int _dl_higher_prime_number (unsigned long int n);
+
+
+#if defined(__MINGW32__)
+# define HOST_LONG_LONG_FORMAT "I64"
+#else
+# define HOST_LONG_LONG_FORMAT "ll"
+#endif
+
+#endif
+
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-01 18:21:20 +0000