fix signed/unsigned warnings and unused warnings

ldso/ldso/dl-hash.c

@@ -84,7 +84,7 @@ static inline Elf_Symndx _dl_elf_hash(const char *name)
  */
 struct elf_resolve *_dl_add_elf_hash_table(const char *libname,
 	char *loadaddr, unsigned long *dynamic_info, unsigned long dynamic_addr,
-	unsigned long dynamic_size)
+	attribute_unused unsigned long dynamic_size)
 {
 	Elf_Symndx *hash_addr;
 	struct elf_resolve *tpnt;

ldso/ldso/i386/dl-startup.h

@@ -41,9 +41,9 @@ asm(
 #define GET_ARGV(ARGVP, ARGS) ARGVP = (((unsigned long*) & ARGS)+1)
 
 /* Handle relocation of the symbols in the dynamic loader. */
-static inline
+static __always_inline
 void PERFORM_BOOTSTRAP_RELOC(ELF_RELOC *rpnt, unsigned long *reloc_addr,
-	unsigned long symbol_addr, unsigned long load_addr, Elf32_Sym *symtab)
+	unsigned long symbol_addr, unsigned long load_addr, attribute_unused Elf32_Sym *symtab)
 {
 	switch (ELF32_R_TYPE(rpnt->r_info))
 	{

ldso/ldso/ldso.c

@@ -122,7 +122,8 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, unsigned long load_addr,
 	ElfW(Phdr) *ppnt;
 	ElfW(Dyn) *dpnt;
 	char *lpntstr;
-	int i, unlazy = 0, trace_loaded_objects = 0;
+	unsigned int i;
+	int unlazy = 0, trace_loaded_objects = 0;
 	struct dyn_elf *rpnt;
 	struct elf_resolve *tcurr;
 	struct elf_resolve *tpnt1;
@@ -178,8 +179,8 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, unsigned long load_addr,
 	 * Note that for SUID programs we ignore the settings in
 	 * LD_LIBRARY_PATH.
 	 */
-	if ((auxvt[AT_UID].a_un.a_val == -1 && _dl_suid_ok()) ||
-	    (auxvt[AT_UID].a_un.a_val != -1 &&
+	if ((auxvt[AT_UID].a_un.a_val == (size_t)-1 && _dl_suid_ok()) ||
+	    (auxvt[AT_UID].a_un.a_val != (size_t)-1 &&
 	     auxvt[AT_UID].a_un.a_val == auxvt[AT_EUID].a_un.a_val &&
 	     auxvt[AT_GID].a_un.a_val == auxvt[AT_EGID].a_un.a_val)) {
 		_dl_secure = 0;
@@ -227,7 +228,7 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, unsigned long load_addr,
 	 * different from what the ELF header says for ET_DYN/PIE executables.
 	 */
 	{
-		int i;
+		unsigned int i;
 		ElfW(Phdr) *ppnt = (ElfW(Phdr) *) auxvt[AT_PHDR].a_un.a_val;
 
 		for (i = 0; i < auxvt[AT_PHNUM].a_un.a_val; i++, ppnt++)

ldso/libdl/libdl.c

@@ -144,7 +144,7 @@ void *dlopen(const char *libname, int flag)
 	void (*dl_brk) (void);
 	int now_flag;
 	struct init_fini_list *tmp, *runp, *runp2, *dep_list;
-	int nlist, i;
+	unsigned int nlist, i;
 	struct elf_resolve **init_fini_list;
 
 	/* A bit of sanity checking... */
@@ -297,7 +297,7 @@ void *dlopen(const char *libname, int flag)
 	}
 	/* Sort the INIT/FINI list in dependency order. */
 	for (runp2 = dep_list; runp2; runp2 = runp2->next) {
-		int j, k;
+		unsigned int j, k;
 		for (j = 0; init_fini_list[j] != runp2->tpnt; ++j)
 			/* Empty */;
 		for (k = j + 1; k < nlist; ++k) {
@@ -468,7 +468,7 @@ static int do_dlclose(void *vhandle, int need_fini)
 	void (*dl_brk) (void);
 	struct dyn_elf *handle;
 	unsigned int end;
-	int i = 0, j;
+	unsigned int i, j;
 
 	handle = (struct dyn_elf *) vhandle;
 	if (handle == _dl_symbol_tables)
@@ -669,16 +669,14 @@ int dladdr(const void *__address, Dl_info * __info)
 	{
 		char *strtab;
 		ElfW(Sym) *symtab;
-		int hn, si;
-		int sf;
-		int sn = 0;
+		unsigned int hn, si, sn, sf;
 		ElfW(Addr) sa;
 
 		sa = 0;
 		symtab = (ElfW(Sym) *) (pelf->dynamic_info[DT_SYMTAB]);
 		strtab = (char *) (pelf->dynamic_info[DT_STRTAB]);
 
-		sf = 0;
+		sf = sn = 0;
 		for (hn = 0; hn < pelf->nbucket; hn++) {
 			for (si = pelf->elf_buckets[hn]; si; si = pelf->chains[si]) {
 				ElfW(Addr) symbol_addr;