ldso: Extend prelink support for all other achitectures

Update Arch specific part of the dynamic linker to the
latest cahnges required by prelink:

- Use _dl_loaded_modules->scope as global symbol scope
- Pass the sym argument (or NULL) to the _dl_find_hash
- Update _dl_parse, _dl_do_reloc, _dl_do_lazy_reloc and
  _dl_parse_relocation_information to reflect the change of
  the scope argument's type
- Add the call to _dl_debug_lookup used for trace prelinking.

Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>

1 files changed, 13 insertions, 7 deletions

diff --git a/ldso/ldso/powerpc/elfinterp.c b/ldso/ldso/powerpc/elfinterp.c
index 855c040d3..043534ed1 100644
--- a/ldso/ldso/powerpc/elfinterp.c
+++ b/ldso/ldso/powerpc/elfinterp.c
@@ -139,7 +139,7 @@ unsigned long _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry)
 
 	/* Get the address of the GOT entry */
 	finaladdr = (Elf32_Addr) _dl_find_hash(symname,
-			tpnt->symbol_scope, tpnt, ELF_RTYPE_CLASS_PLT, NULL);
+			&_dl_loaded_modules->symbol_scope, tpnt, NULL, ELF_RTYPE_CLASS_PLT, NULL);
 	if (unlikely(!finaladdr)) {
 		_dl_dprintf(2, "%s: can't resolve symbol '%s' in lib '%s'.\n", _dl_progname, symname, tpnt->libname);
 		_dl_exit(1);
@@ -182,7 +182,7 @@ unsigned long _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry)
 }
 
 static __inline__ int
-_dl_do_reloc (struct elf_resolve *tpnt,struct dyn_elf *scope,
+_dl_do_reloc (struct elf_resolve *tpnt,struct r_scope_elem *scope,
 	      ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
 {
 	int reloc_type;
@@ -197,6 +197,8 @@ _dl_do_reloc (struct elf_resolve *tpnt,struct dyn_elf *scope,
 	unsigned long old_val;
 #endif
 
+	struct sym_val current_value = { NULL, NULL };
+
 	symbol_addr  = tpnt->loadaddr; /* For R_PPC_RELATIVE */
 	reloc_addr   = (Elf32_Addr *)(intptr_t) (symbol_addr + (unsigned long) rpnt->r_offset);
 	reloc_type   = ELF32_R_TYPE(rpnt->r_info);
@@ -205,7 +207,7 @@ _dl_do_reloc (struct elf_resolve *tpnt,struct dyn_elf *scope,
 	symname      = strtab + sym->st_name;
 	if (symtab_index) {
 		symbol_addr = (unsigned long) _dl_find_hash(symname, scope, tpnt,
-							    elf_machine_type_class(reloc_type), &tls_tpnt);
+						&current_value, elf_machine_type_class(reloc_type), &tls_tpnt);
 		/* We want to allow undefined references to weak symbols - this might
 		 * have been intentional.  We should not be linking local symbols
 		 * here, so all bases should be covered.
@@ -214,10 +216,14 @@ _dl_do_reloc (struct elf_resolve *tpnt,struct dyn_elf *scope,
 			&& (ELF32_ST_TYPE(sym->st_info) != STT_TLS
 				&& ELF32_ST_BIND(sym->st_info) != STB_WEAK)))
 			return 1;
+		if (_dl_trace_prelink)
+			_dl_debug_lookup (symname, tpnt, &symtab[symtab_index],
+						&current_value, elf_machine_type_class(reloc_type));
 	} else {
 		symbol_addr = sym->st_value;
 		tls_tpnt = tpnt;
 	}
+
 #if defined (__SUPPORT_LD_DEBUG__)
 	old_val = *reloc_addr;
 #endif
@@ -385,9 +391,9 @@ void _dl_parse_lazy_relocation_information(struct dyn_elf *rpnt,
 }
 
 static __inline__ int
-_dl_parse(struct elf_resolve *tpnt, struct dyn_elf *scope,
+_dl_parse(struct elf_resolve *tpnt, struct r_scope_elem *scope,
 	  unsigned long rel_addr, unsigned long rel_size,
-	  int (*reloc_fnc) (struct elf_resolve *tpnt, struct dyn_elf *scope,
+	  int (*reloc_fnc) (struct elf_resolve *tpnt, struct r_scope_elem *scope,
 			    ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab))
 {
 	unsigned int i;
@@ -440,7 +446,7 @@ _dl_parse(struct elf_resolve *tpnt, struct dyn_elf *scope,
 }
 
 int _dl_parse_relocation_information(struct dyn_elf *rpnt,
-	unsigned long rel_addr, unsigned long rel_size)
+	struct r_scope_elem *scope, unsigned long rel_addr, unsigned long rel_size)
 {
-	return _dl_parse(rpnt->dyn, rpnt->dyn->symbol_scope, rel_addr, rel_size, _dl_do_reloc);
+	return _dl_parse(rpnt->dyn, scope, rel_addr, rel_size, _dl_do_reloc);
 }