From: Roland McGrath <roland@gnu.org>
Date: Mon, 3 Jun 1996 04:24:14 +0000 (+0000)
Subject: Mon Jun  3 03:06:34 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
X-Git-Tag: upstream/2.30~10627^2~3809
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=43e2c3421f515e9a97e2a2420dda167d4b0d0f57;p=external%2Fglibc.git

Mon Jun  3 03:06:34 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>

	* elf/dl-lookup.c (_dl_lookup_symbol): Take new arg RELOC_ADDR and
	don't allow a defn resolving to that address.
	* elf/link.h: Update prototype and comment.
	* elf/dl-runtime.c (fixup): Define local `resolve' function and pass
	it to elf_machine_relplt.
	* elf/dl-reloc.c (_dl_relocate_object: resolve): Take new arg
	RELOC_ADDR and pass it through to _dl_lookup_symbol.
	* elf/do-rel.h (elf_dynamic_do_rel): Pass RESOLVE to elf_machine_rel
	instead of calling it ourselves and passing its results.
	(elf_dynamic_do_rel): RESOLVE fn takes new arg RELOC_ADDR.
	* elf/rtld.c (dl_main): Pass 0 for RELOC_ADDR to _dl_lookup_symbol.
	* sysdeps/i386/dl-machine.h (elf_machine_rel): Remove SYM_LOADADDR
	arg.  Add RESOLVE function ptr arg.  Call *RESOLVE as necessary.
	* sysdeps/m68k/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/stub/dl-machine.h: Likewise.
Sun Jun  2 14:56:49 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>

	* elf/dl-lookup.c (_dl_lookup_symbol): Arg NOSELF renamed to NOPLT.
	Reject SHN_UNDEF defns iff NOPLT is nonzero.
	* elf/link.h (_dl_lookup_symbol): Update prototype and comment.
	* elf/dl-runtime.c (fixup): Pass 1 to _dl_lookup_symbol for NOPLT.
	* elf/dlsym.c (dlsym): Pass 0.
	* elf/rtld.c (dl_main): Likewise.
	* elf/dl-reloc.c (_dl_relocate_object: resolve): Second arg R_OFFSET
	replaced with NOPLT flag.  Pass it through to _dl_lookup_symbol.
	* elf/do-rel.h (elf_dynamic_do_rel): Update prototype of RESOLVE arg.
	Pass `elf_machine_pltrel_p (R->r_type)' result as NOPLT flag value.
	* sysdeps/i386/dl-machine.h (elf_machine_pltrel_p): New macro.
	* sysdeps/m68k/dl-machine.h (elf_machine_pltrel_p): Likewise.
	* sysdeps/stub/dl-machine.h (elf_machine_pltrel_p): Likewise.
---

diff --git a/sysdeps/m68k/dl-machine.h b/sysdeps/m68k/dl-machine.h
index aa1f19e..760bf96 100644
--- a/sysdeps/m68k/dl-machine.h
+++ b/sysdeps/m68k/dl-machine.h
@@ -73,43 +73,67 @@ elf_machine_load_address (void)
 
 static inline void
 elf_machine_rela (struct link_map *map,
-		  const Elf32_Rela *reloc,
-		  Elf32_Addr sym_loadaddr, const Elf32_Sym *sym)
+		  const Elf32_Rel *reloc, const Elf32_Sym *sym,
+		  Elf32_Addr (*resolve) (const Elf32_Sym **ref,
+					 Elf32_Addr reloc_addr,
+					 int noplt))
 {
   Elf32_Addr *const reloc_addr = (void *) (map->l_addr + reloc->r_offset);
-  const Elf32_Addr sym_value = sym ? sym_loadaddr + sym->st_value : 0;
+  Elf32_Addr loadbase;
 
   switch (ELF32_R_TYPE (reloc->r_info))
     {
     case R_68K_COPY:
-      memcpy (reloc_addr, (void *) sym_value, sym->st_size);
+      loadbase = (*resolve) (&sym, (Elf32_Addr) reloc_addr, 0);
+      memcpy (reloc_addr, (void *) (loadbase + sym->st_value), sym->st_size);
       break;
     case R_68K_GLOB_DAT:
+      loadbase = (resolve ? (*resolve) (&sym, (Elf32_Addr) reloc_addr, 0) :
+		  /* RESOLVE is null during bootstrap relocation.  */
+		  map->l_addr);
+      *reloc_addr = sym ? (loadbase + sym->st_value) : 0;
+      break;
     case R_68K_JMP_SLOT:
-      *reloc_addr = sym_value;
+      loadbase = (resolve ? (*resolve) (&sym, (Elf32_Addr) reloc_addr, 1) :
+		  /* RESOLVE is null during bootstrap relocation.  */
+		  map->l_addr);
+      *reloc_addr = sym ? (loadbase + sym->st_value) : 0;
       break;
     case R_68K_8:
-      *(char *) reloc_addr = sym_value + reloc->r_addend;
+      loadbase = (*resolve) (&sym, (Elf32_Addr) reloc_addr, 0);
+      *(char *) reloc_addr = ((sym ? (loadbase + sym->st_value) : 0)
+			      + reloc->r_addend);
       break;
     case R_68K_16:
-      *(short *) reloc_addr = sym_value + reloc->r_addend;
+      loadbase = (*resolve) (&sym, (Elf32_Addr) reloc_addr, 0);
+      *(short *) reloc_addr = ((sym ? (loadbase + sym->st_value) : 0)
+			       + reloc->r_addend);
       break;
     case R_68K_32:
-      *reloc_addr = sym_value + reloc->r_addend;
+      loadbase = (*resolve) (&sym, (Elf32_Addr) reloc_addr, 0);
+      *reloc_addr = ((sym ? (loadbase + sym->st_value) : 0)
+		     + reloc->r_addend);
       break;
     case R_68K_RELATIVE:
       *reloc_addr = map->l_addr + reloc->r_addend;
       break;
     case R_68K_PC8:
-      *(char *) reloc_addr = (sym_value + reloc->r_addend
+      loadbase = (*resolve) (&sym, (Elf32_Addr) reloc_addr, 0);
+      *(char *) reloc_addr = ((sym ? (loadbase + sym->st_value) : 0)
+			      + reloc->r_addend
 			      - (Elf32_Addr) reloc_addr);
       break;
     case R_68K_PC16:
-      *(short *) reloc_addr = (sym_value + reloc->r_addend
+      loadbase = (*resolve) (&sym, (Elf32_Addr) reloc_addr, 0);
+      *(short *) reloc_addr = ((sym ? (loadbase + sym->st_value) : 0)
+			       + reloc->r_addend
 			       - (Elf32_Addr) reloc_addr);
       break;
     case R_68K_PC32:
-      *reloc_addr = sym_value + reloc->r_addend - (Elf32_Addr) reloc_addr;
+      loadbase = (*resolve) (&sym, (Elf32_Addr) reloc_addr, 0);
+      *reloc_addr = ((sym ? (loadbase + sym->st_value) : 0)
+		     + reloc->r_addend
+		     - (Elf32_Addr) reloc_addr);
       break;
     case R_68K_NONE:		/* Alright, Wilbur.  */
       break;