svn commit: trunk/uClibc/ldso/ldso/m68k
vapier at uclibc.org
vapier at uclibc.org
Sat Jan 14 07:37:34 UTC 2006
Author: vapier
Date: 2006-01-13 23:37:33 -0800 (Fri, 13 Jan 2006)
New Revision: 13310
Log:
m68k ldso works again (well, lazy relocation is broken atm)
Modified:
trunk/uClibc/ldso/ldso/m68k/elfinterp.c
trunk/uClibc/ldso/ldso/m68k/resolve.S
Changeset:
Modified: trunk/uClibc/ldso/ldso/m68k/elfinterp.c
===================================================================
--- trunk/uClibc/ldso/ldso/m68k/elfinterp.c 2006-01-14 07:21:25 UTC (rev 13309)
+++ trunk/uClibc/ldso/ldso/m68k/elfinterp.c 2006-01-14 07:37:33 UTC (rev 13310)
@@ -50,20 +50,20 @@
int reloc_type;
ELF_RELOC *this_reloc;
char *strtab;
- Elf32_Sym *symtab;
+ ElfW(Sym) *symtab;
int symtab_index;
- ELF_RELOC *rel_addr;
+ char *rel_addr;
char *new_addr;
char **got_addr;
- unsigned int instr_addr;
+ ElfW(Addr) instr_addr;
char *symname;
- rel_addr = (ELF_RELOC *)tpnt->dynamic_info[DT_JMPREL];
- this_reloc = (ELF_RELOC *)(intptr_t)(rel_addr + reloc_entry);
- reloc_type = ELF32_R_TYPE(this_reloc->r_info);
- symtab_index = ELF32_R_SYM(this_reloc->r_info);
+ rel_addr = (char *)tpnt->dynamic_info[DT_JMPREL];
+ this_reloc = (ELF_RELOC *)(rel_addr + reloc_entry);
+ reloc_type = ELF_R_TYPE(this_reloc->r_info);
+ symtab_index = ELF_R_SYM(this_reloc->r_info);
- symtab = (Elf32_Sym *)(intptr_t)tpnt->dynamic_info[DT_SYMTAB];
+ symtab = (ElfW(Sym) *)tpnt->dynamic_info[DT_SYMTAB];
strtab = (char *)tpnt->dynamic_info[DT_STRTAB];
symname = strtab + symtab[symtab_index].st_name;
@@ -74,7 +74,7 @@
}
/* Address of the jump instruction to fix up. */
- instr_addr = ((int)this_reloc->r_offset + (int)tpnt->loadaddr);
+ instr_addr = (this_reloc->r_offset + tpnt->loadaddr);
got_addr = (char **)instr_addr;
/* Get the address of the GOT entry. */
@@ -90,159 +90,223 @@
_dl_dprintf(_dl_debug_file, "\nresolve function: %s", symname);
if (_dl_debug_detail)
_dl_dprintf(_dl_debug_file,
- "\n\tpatched: %x ==> %x @ %x",
+ "\tpatched: %x ==> %x @ %x\n",
*got_addr, new_addr, got_addr);
}
}
- if (!_dl_debug_nofixups) {
+ if (!_dl_debug_nofixups)
+#endif
*got_addr = new_addr;
- }
-#else
- *got_addr = new_addr;
-#endif
- return (unsigned int)new_addr;
+ return (unsigned int)new_addr;
}
-void
-_dl_parse_lazy_relocation_information(struct dyn_elf *arg_rpnt,
- unsigned long rel_addr, unsigned long rel_size)
+static int
+_dl_parse(struct elf_resolve *tpnt, struct dyn_elf *scope,
+ unsigned long rel_addr, unsigned long rel_size,
+ int (*reloc_fnc)(struct elf_resolve *tpnt, struct dyn_elf *scope,
+ ELF_RELOC *rpnt, ElfW(Sym) *symtab, char *strtab))
{
- int i;
+ unsigned int i;
char *strtab;
- int reloc_type;
+ ElfW(Sym) *symtab;
+ ELF_RELOC *rpnt;
int symtab_index;
- Elf32_Sym *symtab;
- Elf32_Rela *rpnt;
- unsigned int *reloc_addr;
- struct elf_resolve *tpnt = arg_rpnt->dyn;
- /* Now parse the relocation information. */
- rpnt = (Elf32_Rela *)rel_addr;
- rel_size = rel_size / sizeof (Elf32_Rela);
+ /* Parse the relocation information. */
+ rpnt = (ELF_RELOC *)rel_addr;
+ rel_size /= sizeof(ELF_RELOC);
- symtab = (Elf32_Sym *)tpnt->dynamic_info[DT_SYMTAB];
+ symtab = (ElfW(Sym) *)tpnt->dynamic_info[DT_SYMTAB];
strtab = (char *)tpnt->dynamic_info[DT_STRTAB];
for (i = 0; i < rel_size; i++, rpnt++) {
- reloc_addr = (int *) (tpnt->loadaddr + (int) rpnt->r_offset);
- reloc_type = ELF32_R_TYPE (rpnt->r_info);
- symtab_index = ELF32_R_SYM (rpnt->r_info);
+ int res;
- switch (reloc_type)
- {
+ symtab_index = ELF_R_SYM(rpnt->r_info);
+
+ debug_sym(symtab, strtab, symtab_index);
+ debug_reloc(symtab, strtab, rpnt);
+
+ res = reloc_fnc(tpnt, scope, rpnt, symtab, strtab);
+
+ if (res == 0)
+ continue;
+
+ _dl_dprintf(2, "\n%s: ", _dl_progname);
+
+ if (symtab_index)
+ _dl_dprintf(2, "symbol '%s': ",
+ strtab + symtab[symtab_index].st_name);
+
+ if (unlikely(res < 0)) {
+ int reloc_type = ELF_R_TYPE(rpnt->r_info);
+
+ _dl_dprintf(2, "can't handle reloc type "
+#if defined (__SUPPORT_LD_DEBUG__)
+ "%s\n", _dl_reltypes(reloc_type));
+#else
+ "%x\n", reloc_type);
+#endif
+ _dl_exit(-res);
+ } else if (unlikely(res > 0)) {
+ _dl_dprintf(2, "can't resolve symbol\n");
+ return res;
+ }
+ }
+
+ return 0;
+}
+
+static int
+_dl_do_reloc(struct elf_resolve *tpnt, struct dyn_elf *scope,
+ ELF_RELOC *rpnt, ElfW(Sym) *symtab, char *strtab)
+{
+ int reloc_type;
+ int symtab_index;
+ char *symname;
+ ElfW(Sym) *sym;
+ ElfW(Addr) *reloc_addr;
+ ElfW(Addr) symbol_addr;
+#if defined (__SUPPORT_LD_DEBUG__)
+ ElfW(Addr) old_val;
+#endif
+
+ reloc_addr = (ElfW(Addr)*)(tpnt->loadaddr + (unsigned long)rpnt->r_offset);
+ reloc_type = ELF_R_TYPE(rpnt->r_info);
+ symtab_index = ELF_R_SYM(rpnt->r_info);
+ sym = &symtab[symtab_index];
+ symbol_addr = 0;
+ symname = strtab + sym->st_name;
+
+ if (symtab_index) {
+ symbol_addr = (ElfW(Addr))_dl_find_hash(symname, scope, tpnt,
+ elf_machine_type_class(reloc_type));
+ /*
+ * 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.
+ */
+ if (unlikely(!symbol_addr && ELF_ST_BIND(sym->st_info) != STB_WEAK)) {
+ _dl_dprintf(2, "%s: can't resolve symbol '%s'\n", _dl_progname, symname);
+ _dl_exit(1);
+ };
+ }
+
+#if defined (__SUPPORT_LD_DEBUG__)
+ old_val = *reloc_addr;
+#endif
+
+ switch (reloc_type) {
case R_68K_NONE:
break;
+ case R_68K_8:
+ *(char *) reloc_addr = symbol_addr + rpnt->r_addend;
+ break;
+ case R_68K_16:
+ *(short *) reloc_addr = symbol_addr + rpnt->r_addend;
+ break;
+ case R_68K_32:
+ *reloc_addr = symbol_addr + rpnt->r_addend;
+ break;
+ case R_68K_PC8:
+ *(char *) reloc_addr = (symbol_addr + rpnt->r_addend
+ - (unsigned int) reloc_addr);
+ break;
+ case R_68K_PC16:
+ *(short *) reloc_addr = (symbol_addr + rpnt->r_addend
+ - (unsigned int) reloc_addr);
+ break;
+ case R_68K_PC32:
+ *reloc_addr = (symbol_addr + rpnt->r_addend
+ - (unsigned int) reloc_addr);
+ break;
+ case R_68K_GLOB_DAT:
case R_68K_JMP_SLOT:
- *reloc_addr += (unsigned int) tpnt->loadaddr;
- break;
+ *reloc_addr = symbol_addr;
+ break;
+ case R_68K_RELATIVE:
+ *reloc_addr = ((unsigned int) tpnt->loadaddr
+ /* Compatibility kludge. */
+ + (rpnt->r_addend ? : *reloc_addr));
+ break;
+ case R_68K_COPY:
+ _dl_memcpy ((void *) reloc_addr,
+ (void *) symbol_addr,
+ symtab[symtab_index].st_size);
+ break;
+
default:
- _dl_dprintf (2, "%s: (LAZY) can't handle reloc type ", _dl_progname);
+ return -1; /* Calls _dl_exit(1). */
+ }
+
#if defined (__SUPPORT_LD_DEBUG__)
- _dl_dprintf (2, "%s ", _dl_reltypes_tab[reloc_type]);
+ if (_dl_debug_reloc && _dl_debug_detail)
+ _dl_dprintf(_dl_debug_file, "\tpatched: %x ==> %x @ %x\n",
+ old_val, *reloc_addr, reloc_addr);
#endif
- if (symtab_index)
- _dl_dprintf (2, "'%s'", strtab + symtab[symtab_index].st_name);
- _dl_dprintf (2, "\n");
- _dl_exit (1);
- }
- }
+
+ return 0;
}
-int
-_dl_parse_relocation_information(struct dyn_elf *arg_rpnt,
- unsigned long rel_addr, unsigned long rel_size)
+#if 0
+static int
+_dl_do_lazy_reloc(struct elf_resolve *tpnt, struct dyn_elf *scope,
+ ELF_RELOC *rpnt, ElfW(Sym) *symtab, char *strtab)
{
- int i;
- char *strtab;
int reloc_type;
- int goof = 0;
- Elf32_Sym *symtab;
- Elf32_Rela *rpnt;
- unsigned int *reloc_addr;
- unsigned int symbol_addr;
int symtab_index;
- struct elf_resolve *tpnt = arg_rpnt->dyn;
- /* Now parse the relocation information */
+ ElfW(Addr) *reloc_addr;
+#if defined (__SUPPORT_LD_DEBUG__)
+ ElfW(Addr) old_val;
+#endif
- rpnt = (Elf32_Rela *)rel_addr;
- rel_size = rel_size / sizeof (Elf32_Rela);
+ (void)scope;
+ symtab_index = ELF_R_SYM(rpnt->r_info);
+ (void)strtab;
- symtab = (Elf32_Sym *)tpnt->dynamic_info[DT_SYMTAB];
- strtab = (char *)tpnt->dynamic_info[DT_STRTAB];
+ reloc_addr = (ElfW(Addr)*)(tpnt->loadaddr + rpnt->r_offset);
+ reloc_type = ELF_R_TYPE(rpnt->r_info);
- for (i = 0; i < rel_size; i++, rpnt++) {
- reloc_addr = (int *) (tpnt->loadaddr + (int) rpnt->r_offset);
- reloc_type = ELF32_R_TYPE (rpnt->r_info);
- symtab_index = ELF32_R_SYM (rpnt->r_info);
- symbol_addr = 0;
- if (symtab_index) {
- symbol_addr = (unsigned int)
- _dl_find_hash (strtab + symtab[symtab_index].st_name,
- tpnt->symbol_scope, tpnt,
- elf_machine_type_class(reloc_type));
+#if defined (__SUPPORT_LD_DEBUG__)
+ old_val = *reloc_addr;
+#endif
- /* 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. */
- if (!symbol_addr
- && ELF32_ST_BIND (symtab[symtab_index].st_info) != STB_WEAK)
- {
- _dl_dprintf (2, "%s: can't resolve symbol '%s'\n",
- _dl_progname, strtab + symtab[symtab_index].st_name);
- _dl_exit (1);
- }
- }
- switch (reloc_type)
- {
- case R_68K_NONE:
- break;
- case R_68K_8:
- *(char *) reloc_addr = symbol_addr + rpnt->r_addend;
- break;
- case R_68K_16:
- *(short *) reloc_addr = symbol_addr + rpnt->r_addend;
- break;
- case R_68K_32:
- *reloc_addr = symbol_addr + rpnt->r_addend;
- break;
- case R_68K_PC8:
- *(char *) reloc_addr = (symbol_addr + rpnt->r_addend
- - (unsigned int) reloc_addr);
- break;
- case R_68K_PC16:
- *(short *) reloc_addr = (symbol_addr + rpnt->r_addend
- - (unsigned int) reloc_addr);
- break;
- case R_68K_PC32:
- *reloc_addr = (symbol_addr + rpnt->r_addend
- - (unsigned int) reloc_addr);
- break;
- case R_68K_GLOB_DAT:
- case R_68K_JMP_SLOT:
- *reloc_addr = symbol_addr;
- break;
- case R_68K_RELATIVE:
- *reloc_addr = ((unsigned int) tpnt->loadaddr
- /* Compatibility kludge. */
- + (rpnt->r_addend ? : *reloc_addr));
- break;
- case R_68K_COPY:
- _dl_memcpy ((void *) reloc_addr,
- (void *) symbol_addr,
- symtab[symtab_index].st_size);
- break;
- default:
- _dl_dprintf (2, "%s: can't handle reloc type ", _dl_progname);
+ switch (reloc_type) {
+ case R_68K_NONE:
+ break;
+ case R_68K_JMP_SLOT:
+ *reloc_addr += (unsigned int) tpnt->loadaddr;
+ break;
+ default:
+ _dl_exit(1);
+ }
+
#if defined (__SUPPORT_LD_DEBUG__)
- _dl_dprintf (2, "%s ", _dl_reltypes_tab[reloc_type]);
+ if (_dl_debug_reloc && _dl_debug_detail)
+ _dl_dprintf(_dl_debug_file, "\tpatched_lazy: %x ==> %x @ %x\n",
+ old_val, *reloc_addr, reloc_addr);
#endif
- if (symtab_index)
- _dl_dprintf (2, "'%s'", strtab + symtab[symtab_index].st_name);
- _dl_dprintf (2, "\n");
- _dl_exit (1);
- }
- }
- return goof;
+
+ return 0;
}
+#endif
+
+void
+_dl_parse_lazy_relocation_information(struct dyn_elf *rpnt,
+ unsigned long rel_addr,
+ unsigned long rel_size)
+{
+ _dl_parse_relocation_information(rpnt, rel_addr, rel_size);
+/*
+ (void)_dl_parse(rpnt->dyn, NULL, rel_addr, rel_size, _dl_do_lazy_reloc);
+*/
+}
+
+int
+_dl_parse_relocation_information(struct dyn_elf *rpnt,
+ unsigned long rel_addr,
+ unsigned long rel_size)
+{
+ return _dl_parse(rpnt->dyn, rpnt->dyn->symbol_scope, rel_addr, rel_size, _dl_do_reloc);
+}
Modified: trunk/uClibc/ldso/ldso/m68k/resolve.S
===================================================================
--- trunk/uClibc/ldso/ldso/m68k/resolve.S 2006-01-14 07:21:25 UTC (rev 13309)
+++ trunk/uClibc/ldso/ldso/m68k/resolve.S 2006-01-14 07:37:33 UTC (rev 13310)
@@ -8,14 +8,16 @@
.globl _dl_linux_resolve
.type _dl_linux_resolve, at function
_dl_linux_resolve:
- moveml %a0/%a1,%sp at -
-#ifdef __PIC__
- bsrl _dl_linux_resolver at PLTPC
-#else
- jbsr _dl_linux_resolver
-#endif
- moveml %sp at +,%a0/%a1
- addql #8,%sp
- jmp @(%d0)
-.LFE2:
- .size _dl_linux_resolve,.LFE2-_dl_linux_resolve
+ # Save %a0 (struct return address) and %a1.
+ move.l %a0, -(%sp)
+ move.l %a1, -(%sp)
+ # Call the real address resolver.
+ jbsr _dl_linux_resolver
+ # Restore register %a0 and %a1.
+ move.l (%sp)+, %a1
+ move.l (%sp)+, %a0
+ # Pop parameters
+ addq.l #8, %sp
+ # Call real function.
+ jmp (%d0)
+.size _dl_linux_resolve,.-_dl_linux_resolve
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