patch from Bernd Schmidt to abstract away initializing of relocation addresses

ldso/include/dl-defs.h

@@ -75,6 +75,14 @@ typedef struct {
 # define DL_LOADADDR_TYPE ElfW(Addr)
 #endif
 
+/* When DL_LOADADDR_TYPE is not a scalar value, or some different
+ * computation is needed to relocate an address, define this.
+ */
+#ifndef DL_RELOC_ADDR
+# define DL_RELOC_ADDR(LOADADDR, ADDR) \
+	((LOADADDR) + (ADDR))
+#endif
+
 /* Initialize a LOADADDR representing the loader itself.  It's only
  * called from DL_BOOT, so additional arguments passed to it may be
  * referenced.
@@ -84,6 +92,24 @@ typedef struct {
 	((LOADADDR) = (BASEADDR))
 #endif
 
+/* Define if any declarations/definitions of local variables are
+ * needed in a function that calls DT_INIT_LOADADDR or
+ * DL_INIT_LOADADDR_HDR.  Declarations must be properly terminated
+ * with a semicolon, and non-declaration statements are forbidden.
+ */
+#ifndef DL_INIT_LOADADDR_EXTRA_DECLS
+# define DL_INIT_LOADADDR_EXTRA_DECLS /* int i; */
+#endif
+
+/* Prepare a DL_LOADADDR_TYPE data structure for incremental
+ * initialization with DL_INIT_LOADADDR_HDR, given pointers to a base
+ * load address and to program headers.
+ */
+#ifndef DL_INIT_LOADADDR
+# define DL_INIT_LOADADDR(LOADADDR, BASEADDR, PHDR, PHDRCNT) \
+	((LOADADDR) = (BASEADDR))
+#endif
+
 /* Initialize a LOADADDR representing the program.  It's called from
  * DL_BOOT only.
  */
@@ -92,6 +118,13 @@ typedef struct {
 	((LOADADDR) = (DL_LOADADDR_TYPE)(BASEADDR))
 #endif
 
+/* Convert a DL_LOADADDR_TYPE to an identifying pointer.  Used mostly
+ * for debugging.
+ */
+#ifndef DL_LOADADDR_BASE
+# define DL_LOADADDR_BASE(LOADADDR) (LOADADDR)
+#endif
+
 /* Test whether a given ADDR is more likely to be within the memory
  * region mapped to TPNT (a struct elf_resolve *) than to TFROM.
  * Everywhere that this is used, TFROM is initially NULL, and whenever

ldso/include/dl-elf.h

@@ -141,7 +141,7 @@ void __dl_parse_dynamic_info(ElfW(Dyn) *dpnt, unsigned long dynamic_info[],
 #define ADJUST_DYN_INFO(tag, load_off) \
 	do { \
 		if (dynamic_info[tag]) \
-			dynamic_info[tag] += load_off; \
+			dynamic_info[tag] = (unsigned long) DL_RELOC_ADDR(load_off, dynamic_info[tag]); \
 	} while(0)
 	ADJUST_DYN_INFO(DT_HASH, load_off);
 	ADJUST_DYN_INFO(DT_PLTGOT, load_off);

ldso/ldso/dl-elf.c

@@ -118,9 +118,9 @@ int _dl_unmap_cache(void)
 void
 _dl_protect_relro (struct elf_resolve *l)
 {
-	ElfW(Addr) start = ((l->loadaddr + l->relro_addr)
+	ElfW(Addr) start = (DL_RELOC_ADDR(l->loadaddr, l->relro_addr)
 			    & ~(_dl_pagesize - 1));
-	ElfW(Addr) end = ((l->loadaddr + l->relro_addr + l->relro_size)
+	ElfW(Addr) end = ((DL_RELOC_ADDR(l->loadaddr, l->relro_addr) + l->relro_size)
 			  & ~(_dl_pagesize - 1));
 	_dl_if_debug_dprint("RELRO protecting %s:  start:%x, end:%x\n", l->libname, start, end);
 	if (start != end &&
@@ -352,8 +352,9 @@ struct elf_resolve *_dl_load_elf_shared_library(int secure,
 	ElfW(Addr) relro_addr = 0;
 	size_t relro_size = 0;
 	struct stat st;
+	DL_LOADADDR_TYPE lib_loadaddr;
+	DL_INIT_LOADADDR_EXTRA_DECLS
 
-	libaddr = 0;
 	infile = _dl_open(libname, O_RDONLY, 0);
 	if (infile < 0) {
 		_dl_internal_error_number = LD_ERROR_NOFILE;
@@ -471,6 +472,8 @@ struct elf_resolve *_dl_load_elf_shared_library(int secure,
 	/* Get the memory to store the library */
 	ppnt = (ElfW(Phdr) *)(intptr_t) & header[epnt->e_phoff];
 
+	DL_INIT_LOADADDR(lib_loadaddr, libaddr, ppnt, epnt->e_phnum);
+
 	for (i = 0; i < epnt->e_phnum; i++) {
 		if (ppnt->p_type == PT_GNU_RELRO) {
 			relro_addr = ppnt->p_vaddr;
@@ -547,7 +550,7 @@ struct elf_resolve *_dl_load_elf_shared_library(int secure,
 
 	/* For a non-PIC library, the addresses are all absolute */
 	if (piclib) {
-		dynamic_addr += (unsigned long) libaddr;
+		dynamic_addr = (unsigned long) DL_RELOC_ADDR(lib_loadaddr, dynamic_addr);
 	}
 
 	/*
@@ -567,7 +570,7 @@ struct elf_resolve *_dl_load_elf_shared_library(int secure,
 
 	dpnt = (ElfW(Dyn) *) dynamic_addr;
 	_dl_memset(dynamic_info, 0, sizeof(dynamic_info));
-	_dl_parse_dynamic_info(dpnt, dynamic_info, NULL, libaddr);
+	_dl_parse_dynamic_info(dpnt, dynamic_info, NULL, lib_loadaddr);
 	/* If the TEXTREL is set, this means that we need to make the pages
 	   writable before we perform relocations.  Do this now. They get set
 	   back again later. */
@@ -588,13 +591,13 @@ struct elf_resolve *_dl_load_elf_shared_library(int secure,
 #endif
 	}
 
-	tpnt = _dl_add_elf_hash_table(libname, libaddr, dynamic_info,
+	tpnt = _dl_add_elf_hash_table(libname, lib_loadaddr, dynamic_info,
 			dynamic_addr, 0);
 	tpnt->relro_addr = relro_addr;
 	tpnt->relro_size = relro_size;
 	tpnt->st_dev = st.st_dev;
 	tpnt->st_ino = st.st_ino;
-	tpnt->ppnt = (ElfW(Phdr) *)(intptr_t) (tpnt->loadaddr + epnt->e_phoff);
+	tpnt->ppnt = (ElfW(Phdr) *) DL_RELOC_ADDR(tpnt->loadaddr, epnt->e_phoff);
 	tpnt->n_phent = epnt->e_phnum;
 
 	/*
@@ -625,9 +628,9 @@ struct elf_resolve *_dl_load_elf_shared_library(int secure,
 	}
 
 	_dl_if_debug_dprint("\n\tfile='%s';  generating link map\n", libname);
-	_dl_if_debug_dprint("\t\tdynamic: %x  base: %x\n", dynamic_addr, libaddr);
+	_dl_if_debug_dprint("\t\tdynamic: %x  base: %x\n", dynamic_addr, DL_LOADADDR_BASE(libaddr));
 	_dl_if_debug_dprint("\t\t  entry: %x  phdr: %x  phnum: %x\n\n",
-			epnt->e_entry + libaddr, tpnt->ppnt, tpnt->n_phent);
+			DL_RELOC_ADDR(lib_loadaddr, epnt->e_entry), tpnt->ppnt, tpnt->n_phent);
 
 	_dl_munmap(header, _dl_pagesize);
 
@@ -819,7 +822,7 @@ __dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info, size_t size, void
 	int ret = 0;
 
 	for (l = _dl_loaded_modules; l != NULL; l = l->next) {
-		info.dlpi_addr = l->loadaddr;
+		info.dlpi_addr = DL_LOADADDR_BASE(l->loadaddr);
 		info.dlpi_name = l->libname;
 		info.dlpi_phdr = l->ppnt;
 		info.dlpi_phnum = l->n_phent;

ldso/ldso/dl-hash.c

@@ -163,7 +163,7 @@ char *_dl_find_hash(const char *name, struct dyn_elf *rpnt, struct elf_resolve *
 
 		/* Avoid calling .urem here. */
 		do_rem(hn, elf_hash_number, tpnt->nbucket);
-		symtab = (ElfW(Sym) *) (intptr_t) (tpnt->dynamic_info[DT_SYMTAB]);
+		symtab = (ElfW(Sym) *) tpnt->dynamic_info[DT_SYMTAB];
 		strtab = (char *) (tpnt->dynamic_info[DT_STRTAB]);
 
 		for (si = tpnt->elf_buckets[hn]; si != STN_UNDEF; si = tpnt->chains[si]) {
@@ -184,11 +184,11 @@ char *_dl_find_hash(const char *name, struct dyn_elf *rpnt, struct elf_resolve *
 /* Perhaps we should support old style weak symbol handling
  * per what glibc does when you export LD_DYNAMIC_WEAK */
 				if (!weak_result)
-					weak_result = (char *)tpnt->loadaddr + sym->st_value;
+					weak_result = (char *) DL_RELOC_ADDR(tpnt->loadaddr, sym->st_value);
 				break;
 #endif
 			case STB_GLOBAL:
-				return (char*)tpnt->loadaddr + sym->st_value;
+				return (char*) DL_RELOC_ADDR(tpnt->loadaddr, sym->st_value);
 			default:	/* Local symbols not handled here */
 				break;
 			}

ldso/ldso/dl-startup.c

@@ -186,14 +186,14 @@ static void * __attribute_used__ _dl_start(unsigned long args)
 		_dl_exit(0);
 	}
 	SEND_STDERR_DEBUG("ELF header=");
-	SEND_ADDRESS_STDERR_DEBUG(load_addr, 1);
+	SEND_ADDRESS_STDERR_DEBUG(DL_LOADADDR_BASE(load_addr), 1);
 
 	/* Locate the global offset table.  Since this code must be PIC
 	 * we can take advantage of the magic offset register, if we
 	 * happen to know what that is for this architecture.  If not,
 	 * we can always read stuff out of the ELF file to find it... */
 	got = elf_machine_dynamic();
-	dpnt = (ElfW(Dyn) *) (got + load_addr);
+	dpnt = (ElfW(Dyn) *) DL_RELOC_ADDR(load_addr, got);
 	SEND_STDERR_DEBUG("First Dynamic section entry=");
 	SEND_ADDRESS_STDERR_DEBUG(dpnt, 1);
 	_dl_memset(tpnt, 0, sizeof(struct elf_resolve));
@@ -259,9 +259,9 @@ static void * __attribute_used__ _dl_start(unsigned long args)
 				rel_addr += relative_count * sizeof(ELF_RELOC);
 			}
 
-			rpnt = (ELF_RELOC *) (rel_addr + load_addr);
+			rpnt = (ELF_RELOC *) DL_RELOC_ADDR(load_addr, rel_addr);
 			for (i = 0; i < rel_size; i += sizeof(ELF_RELOC), rpnt++) {
-				reloc_addr = (unsigned long *) (load_addr + (unsigned long) rpnt->r_offset);
+				reloc_addr = (unsigned long *) DL_RELOC_ADDR(load_addr, (unsigned long)rpnt->r_offset);
 				symtab_index = ELF_R_SYM(rpnt->r_info);
 				symbol_addr = 0;
 				sym = NULL;
@@ -272,7 +272,7 @@ static void * __attribute_used__ _dl_start(unsigned long args)
 					symtab = (ElfW(Sym) *) tpnt->dynamic_info[DT_SYMTAB];
 					strtab = (char *) tpnt->dynamic_info[DT_STRTAB];
 					sym = &symtab[symtab_index];
-					symbol_addr = load_addr + sym->st_value;
+					symbol_addr = (unsigned long) DL_RELOC_ADDR(load_addr, sym->st_value);
 
 					SEND_STDERR_DEBUG("relocating symbol: ");
 					SEND_STDERR_DEBUG(strtab + sym->st_name);

ldso/ldso/ldso.c

@@ -109,7 +109,7 @@ static void _dl_run_array_forward(unsigned long array, unsigned long size,
 		unsigned int jm;
 		ElfW(Addr) *addrs;
 		jm = size / sizeof (ElfW(Addr));
-		addrs = (ElfW(Addr) *) (array + loadaddr);
+		addrs = (ElfW(Addr) *) DL_RELOC_ADDR(loadaddr, array);
 		for (j = 0; j < jm; ++j) {
 			void (*dl_elf_func) (void);
 			dl_elf_func = (void (*)(void)) (intptr_t) addrs[j];
@@ -136,7 +136,7 @@ void _dl_run_fini_array(struct elf_resolve *tpnt);
 void _dl_run_fini_array(struct elf_resolve *tpnt)
 {
 	if (tpnt->dynamic_info[DT_FINI_ARRAY]) {
-		ElfW(Addr) *array = (ElfW(Addr) *) (tpnt->loadaddr + tpnt->dynamic_info[DT_FINI_ARRAY]);
+		ElfW(Addr) *array = (ElfW(Addr) *) DL_RELOC_ADDR(tpnt->loadaddr, tpnt->dynamic_info[DT_FINI_ARRAY]);
 		unsigned int i = (tpnt->dynamic_info[DT_FINI_ARRAYSZ] / sizeof(ElfW(Addr)));
 		while (i-- > 0) {
 			void (*dl_elf_func) (void);
@@ -166,7 +166,7 @@ static void __attribute__ ((destructor)) __attribute_used__ _dl_fini(void)
 		if (tpnt->dynamic_info[DT_FINI]) {
 			void (*dl_elf_func) (void);
 
-			dl_elf_func = (void (*)(void)) (intptr_t) (tpnt->loadaddr + tpnt->dynamic_info[DT_FINI]);
+			dl_elf_func = (void (*)(void)) (intptr_t) DL_RELOC_ADDR(tpnt->loadaddr, tpnt->dynamic_info[DT_FINI]);
 			_dl_if_debug_dprint("\ncalling FINI: %s\n\n", tpnt->libname);
 			(*dl_elf_func) ();
 		}
@@ -299,9 +299,9 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 				break;
 			}
 
-		if (app_tpnt->loadaddr)
+		if (DL_LOADADDR_BASE(app_tpnt->loadaddr))
 			_dl_debug_early("Position Independent Executable: "
-					"app_tpnt->loadaddr=%x\n", app_tpnt->loadaddr);
+					"app_tpnt->loadaddr=%x\n", DL_LOADADDR_BASE(app_tpnt->loadaddr));
 	}
 
 	/*
@@ -318,7 +318,7 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 			relro_size = ppnt->p_memsz;
 		}
 		if (ppnt->p_type == PT_DYNAMIC) {
-			dpnt = (ElfW(Dyn) *) (ppnt->p_vaddr + app_tpnt->loadaddr);
+			dpnt = (ElfW(Dyn) *) DL_RELOC_ADDR(app_tpnt->loadaddr, ppnt->p_vaddr);
 			_dl_parse_dynamic_info(dpnt, app_tpnt->dynamic_info, debug_addr, app_tpnt->loadaddr);
 #ifndef __FORCE_SHAREABLE_TEXT_SEGMENTS__
 			/* Ugly, ugly.  We need to call mprotect to change the
@@ -332,7 +332,7 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 				ppnt = (ElfW(Phdr) *) auxvt[AT_PHDR].a_un.a_val;
 				for (i = 0; i < auxvt[AT_PHNUM].a_un.a_val; i++, ppnt++) {
 					if (ppnt->p_type == PT_LOAD && !(ppnt->p_flags & PF_W))
-						_dl_mprotect((void *) ((ppnt->p_vaddr + app_tpnt->loadaddr) & PAGE_ALIGN),
+						_dl_mprotect((void *) (DL_RELOC_ADDR(app_tpnt->loadaddr, ppnt->p_vaddr) & PAGE_ALIGN),
 							     ((ppnt->p_vaddr + app_tpnt->loadaddr) & ADDR_ALIGN) +
 							     (unsigned long) ppnt->p_filesz,
 							     PROT_READ | PROT_WRITE | PROT_EXEC);
@@ -347,7 +347,9 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 #endif
 			/* OK, we have what we need - slip this one into the list. */
 			app_tpnt = _dl_add_elf_hash_table(_dl_progname, app_tpnt->loadaddr,
-					app_tpnt->dynamic_info, ppnt->p_vaddr + app_tpnt->loadaddr, ppnt->p_filesz);
+					app_tpnt->dynamic_info,
+					DL_RELOC_ADDR(app_tpnt->loadaddr, ppnt->p_vaddr),
+					ppnt->p_filesz);
 			_dl_loaded_modules->libtype = elf_executable;
 			_dl_loaded_modules->ppnt = (ElfW(Phdr) *) auxvt[AT_PHDR].a_un.a_val;
 			_dl_loaded_modules->n_phent = auxvt[AT_PHNUM].a_un.a_val;
@@ -368,7 +370,7 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 		if (ppnt->p_type == PT_INTERP) {
 			char *ptmp;
 
-			tpnt->libname = (char *) ppnt->p_vaddr + app_tpnt->loadaddr;
+			tpnt->libname = (char *) DL_RELOC_ADDR(app_tpnt->loadaddr, ppnt->p_vaddr);
 
 			/* Store the path where the shared lib loader was found
 			 * for later use
@@ -378,7 +380,7 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 			if (ptmp != _dl_ldsopath)
 				*ptmp = '\0';
 
-			_dl_debug_early("Lib Loader: (%x) %s\n", tpnt->loadaddr, tpnt->libname);
+			_dl_debug_early("Lib Loader: (%x) %s\n", DL_LOADADDR_BASE(tpnt->loadaddr), tpnt->libname);
 		}
 	}
 	app_tpnt->relro_addr = relro_addr;
@@ -450,7 +452,7 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 	 */
 	debug_addr->r_map = (struct link_map *) _dl_loaded_modules;
 	debug_addr->r_version = 1;
-	debug_addr->r_ldbase = load_addr;
+	debug_addr->r_ldbase = DL_LOADADDR_BASE(load_addr);
 	debug_addr->r_brk = (unsigned long) &_dl_debug_state;
 	_dl_debug_addr = debug_addr;
 
@@ -497,7 +499,7 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 				} else {
 					tpnt1->rtld_flags = unlazy | RTLD_GLOBAL;
 
-					_dl_debug_early("Loading: (%x) %s\n", tpnt1->loadaddr, tpnt1->libname);
+					_dl_debug_early("Loading: (%x) %s\n", DL_LOADADDR_BASE(tpnt1->loadaddr), tpnt1->libname);
 
 #ifdef __LDSO_LDD_SUPPORT__
 					if (trace_loaded_objects &&
@@ -509,7 +511,7 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 						 */
 						if (_dl_strcmp(_dl_progname, str) != 0)
 							_dl_dprintf(1, "\t%s => %s (%x)\n", str, tpnt1->libname,
-								    tpnt1->loadaddr);
+								    DL_LOADADDR_BASE(tpnt1->loadaddr));
 					}
 #endif
 				}
@@ -588,14 +590,14 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 			} else {
 				tpnt1->rtld_flags = unlazy | RTLD_GLOBAL;
 
-				_dl_debug_early("Loading: (%x) %s\n", tpnt1->loadaddr, tpnt1->libname);
+				_dl_debug_early("Loading: (%x) %s\n", DL_LOADADDR_BASE(tpnt1->loadaddr), tpnt1->libname);
 
 #ifdef __LDSO_LDD_SUPPORT__
 				if (trace_loaded_objects &&
 				    tpnt1->usage_count == 1) {
 					_dl_dprintf(1, "\t%s => %s (%x)\n",
 						    cp2, tpnt1->libname,
-						    (unsigned)tpnt1->loadaddr);
+						    DL_LOADADDR_BASE(tpnt1->loadaddr));
 				}
 #endif
 			}
@@ -647,14 +649,14 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 
 				tpnt1->rtld_flags = unlazy | RTLD_GLOBAL;
 
-				_dl_debug_early("Loading: (%x) %s\n", tpnt1->loadaddr, tpnt1->libname);
+				_dl_debug_early("Loading: (%x) %s\n", DL_LOADADDR_BASE(tpnt1->loadaddr), tpnt1->libname);
 
 #ifdef __LDSO_LDD_SUPPORT__
 				if (trace_loaded_objects &&
 				    tpnt1->usage_count == 1) {
 					_dl_dprintf(1, "\t%s => %s (%x)\n",
 						    lpntstr, tpnt1->libname,
-						    (unsigned)tpnt1->loadaddr);
+						    DL_LOADADDR_BASE(tpnt1->loadaddr));
 				}
 #endif
 			}
@@ -715,7 +717,7 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 	 */
 	if (tpnt) {
 		ElfW(Ehdr) *epnt = (ElfW(Ehdr) *) auxvt[AT_BASE].a_un.a_val;
-		ElfW(Phdr) *myppnt = (ElfW(Phdr) *) (load_addr + epnt->e_phoff);
+		ElfW(Phdr) *myppnt = (ElfW(Phdr) *) DL_RELOC_ADDR(load_addr, epnt->e_phoff);
 		int j;
 
 		tpnt = _dl_add_elf_hash_table(tpnt->libname, load_addr,
@@ -765,7 +767,7 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 	if (trace_loaded_objects) {
 		_dl_dprintf(1, "\t%s => %s (%x)\n",
 			    rpnt->dyn->libname + _dl_strlen(_dl_ldsopath) + 1,
-			    rpnt->dyn->libname, rpnt->dyn->loadaddr);
+			    rpnt->dyn->libname, DL_LOADADDR_BASE(rpnt->dyn->loadaddr));
 		_dl_exit(0);
 	}
 #endif
@@ -817,7 +819,7 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 		for (tpnt = _dl_loaded_modules; tpnt; tpnt = tpnt->next) {
 			for (myppnt = tpnt->ppnt, j = 0; j < tpnt->n_phent; j++, myppnt++) {
 				if (myppnt->p_type == PT_LOAD && !(myppnt->p_flags & PF_W) && tpnt->dynamic_info[DT_TEXTREL]) {
-					_dl_mprotect((void *) (tpnt->loadaddr + (myppnt->p_vaddr & PAGE_ALIGN)),
+					_dl_mprotect((void *) (DL_RELOC_ADDR(tpnt->loadaddr, myppnt->p_vaddr) & PAGE_ALIGN),
 							(myppnt->p_vaddr & ADDR_ALIGN) + (unsigned long) myppnt->p_filesz, LXFLAGS(myppnt->p_flags));
 				}
 			}
@@ -846,7 +848,7 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 		if (tpnt->dynamic_info[DT_INIT]) {
 			void (*dl_elf_func) (void);
 
-			dl_elf_func = (void (*)(void)) (intptr_t) (tpnt->loadaddr + tpnt->dynamic_info[DT_INIT]);
+			dl_elf_func = (void (*)(void)) DL_RELOC_ADDR(tpnt->loadaddr, tpnt->dynamic_info[DT_INIT]);
 
 			_dl_if_debug_dprint("calling INIT: %s\n\n", tpnt->libname);
 

ldso/libdl/libdl.c

@@ -377,7 +377,7 @@ void *dlopen(const char *libname, int flag)
 
 		if (tpnt->dynamic_info[DT_INIT]) {
 			void (*dl_elf_func) (void);
-			dl_elf_func = (void (*)(void)) (tpnt->loadaddr + tpnt->dynamic_info[DT_INIT]);
+			dl_elf_func = (void (*)(void)) DL_RELOC_ADDR(tpnt->loadaddr, tpnt->dynamic_info[DT_INIT]);
 			if (dl_elf_func && *dl_elf_func != NULL) {
 				_dl_if_debug_print("running ctors for library %s at '%p'\n",
 						tpnt->libname, dl_elf_func);
@@ -510,7 +510,7 @@ static int do_dlclose(void *vhandle, int need_fini)
 #endif
 
 				if (tpnt->dynamic_info[DT_FINI]) {
-					dl_elf_fini = (int (*)(void)) (tpnt->loadaddr + tpnt->dynamic_info[DT_FINI]);
+					dl_elf_fini = (int (*)(void)) DL_RELOC_ADDR(tpnt->loadaddr, tpnt->dynamic_info[DT_FINI]);
 					_dl_if_debug_print("running dtors for library %s at '%p'\n",
 							tpnt->libname, dl_elf_fini);
 					(*dl_elf_fini) ();
@@ -620,7 +620,7 @@ int dlinfo(void)
 	/* First start with a complete list of all of the loaded files. */
 	for (tpnt = _dl_loaded_modules; tpnt; tpnt = tpnt->next) {
 		fprintf(stderr, "\t%p %p %p %s %d %s\n",
-		        tpnt->loadaddr, tpnt, tpnt->symbol_scope,
+		        DL_LOADADDR_BASE(tpnt->loadaddr), tpnt, tpnt->symbol_scope,
 		        type[tpnt->libtype],
 		        tpnt->usage_count, tpnt->libname);
 	}
@@ -658,7 +658,7 @@ int dladdr(const void *__address, Dl_info * __info)
 		tpnt = rpnt;
 
 		_dl_if_debug_print("Module \"%s\" at %p\n",
-		                   tpnt->libname, tpnt->loadaddr);
+		                   tpnt->libname, DL_LOADADDR_BASE(tpnt->loadaddr));
 
 		if (DL_ADDR_IN_LOADADDR((ElfW(Addr)) __address,  tpnt, pelf))
 			pelf = tpnt;
@@ -687,7 +687,7 @@ int dladdr(const void *__address, Dl_info * __info)
 			for (si = pelf->elf_buckets[hn]; si; si = pelf->chains[si]) {
 				ElfW(Addr) symbol_addr;
 
-				symbol_addr = pelf->loadaddr + symtab[si].st_value;
+				symbol_addr = (ElfW(Addr)) DL_RELOC_ADDR(pelf->loadaddr, symtab[si].st_value);
 				if (symbol_addr <= (ElfW(Addr))__address && (!sf || sa < symbol_addr)) {
 					sa = symbol_addr;
 					sn = si;
@@ -701,7 +701,7 @@ int dladdr(const void *__address, Dl_info * __info)
 
 		if (sf) {
 			__info->dli_fname = pelf->libname;
-			__info->dli_fbase = (void *)pelf->loadaddr;
+			__info->dli_fbase = (void *) DL_LOADADDR_BASE(pelf->loadaddr);
 			__info->dli_sname = strtab + symtab[sn].st_name;
 			__info->dli_saddr = (void *)sa;
 		}