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, 14 insertions, 8 deletions

diff --git a/ldso/ldso/i386/elfinterp.c b/ldso/ldso/i386/elfinterp.c
index 1e3a2b248..0c821ce8b 100644
--- a/ldso/ldso/i386/elfinterp.c
+++ b/ldso/ldso/i386/elfinterp.c
@@ -71,7 +71,7 @@ _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry)
 	got_addr = (char **)instr_addr;
 
 	/* Get the address of the GOT entry. */
-	new_addr = _dl_find_hash(symname, tpnt->symbol_scope, tpnt, ELF_RTYPE_CLASS_PLT, NULL);
+	new_addr = _dl_find_hash(symname, &_dl_loaded_modules->symbol_scope, tpnt, NULL, ELF_RTYPE_CLASS_PLT, NULL);
 	if (unlikely(!new_addr)) {
 		_dl_dprintf(2, "%s: can't resolve symbol '%s' in lib '%s'.\n", _dl_progname, symname, tpnt->libname);
 		_dl_exit(1);
@@ -98,9 +98,9 @@ _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry)
 }
 
 static 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;
@@ -156,7 +156,7 @@ _dl_parse(struct elf_resolve *tpnt, struct dyn_elf *scope,
 }
 
 static 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;
@@ -169,6 +169,8 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct dyn_elf *scope,
 	unsigned long old_val;
 #endif
 
+	struct sym_val current_value = { NULL, NULL };
+
 	reloc_addr = (unsigned long *)(intptr_t)(tpnt->loadaddr + (unsigned long)rpnt->r_offset);
 	reloc_type = ELF32_R_TYPE(rpnt->r_info);
 	symtab_index = ELF32_R_SYM(rpnt->r_info);
@@ -179,7 +181,7 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct dyn_elf *scope,
 	    (ELF32_ST_VISIBILITY(symtab[symtab_index].st_other)
 	     != STV_PROTECTED)) {
 		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
@@ -189,6 +191,10 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct dyn_elf *scope,
 		if (unlikely(!symbol_addr && (ELF_ST_TYPE(symtab[symtab_index].st_info) != STT_TLS)
 					&& ELF32_ST_BIND(symtab[symtab_index].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 {
 		if (symtab_index)
 			symbol_addr = DL_FIND_HASH_VALUE(tpnt, elf_machine_type_class(reloc_type),
@@ -198,7 +204,6 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct dyn_elf *scope,
 		tls_tpnt = tpnt;
 	}
 	
-
 #if defined (__SUPPORT_LD_DEBUG__)
 	old_val = *reloc_addr;
 #endif
@@ -268,7 +273,7 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct dyn_elf *scope,
 }
 
 static int
-_dl_do_lazy_reloc(struct elf_resolve *tpnt, struct dyn_elf *scope,
+_dl_do_lazy_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope,
 		  ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
 {
 	int reloc_type;
@@ -317,8 +322,9 @@ _dl_parse_lazy_relocation_information(struct dyn_elf *rpnt,
 
 int
 _dl_parse_relocation_information(struct dyn_elf *rpnt,
+				 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);
 }