+2000-05-05 Ulrich Drepper <drepper@redhat.com>
+
+ * elf/dl-load.c (_dl_map_object_from_fd): Little of computation of
+ parameter to mprotect and for variable assignments.
+
+2000-05-03 Jes Sorensen <jes@linuxcare.com>
+
+ * sysdeps/generic/ldsodefs.h (LOOKUP_VALUE_ADDRESS): Check the
+ validity of map before dereferencing it.
+
+ * elf/dl-reloc.c (RESOLVE_MAP): Define.
+
+2000-05-02 Jes Sorensen <jes@linuxcare.com>
+
+ * elf/dl-runtime.c (fixup): Add the value returned in the symbol
+ lookup to the arguments to elf_machine_fixup_plt().
+
+ * sysdeps/ia64/dl-machine.h (elf_machine_fixup_plt): Add Link_map
+ of the symbol being resolved to input argument list and make the
+ function return the pointer to the reloc.
+
+ * sysdeps/alpha/dl-machine.h (elf_machine_fixup_plt): Change
+ return valuie to lookup_t and return the value.
+ * sysdeps/arm/dl-machine.h (elf_machine_fixup_plt): Likewise.
+ * sysdeps/generic/dl-machine.h (elf_machine_fixup_plt): Likewise.
+ * sysdeps/i386/dl-machine.h (elf_machine_fixup_plt): Likewise.
+ * sysdeps/m68k/dl-machine.h (elf_machine_fixup_plt): Likewise.
+ * sysdeps/sparc/sparc32/dl-machine.h (elf_machine_fixup_plt): Likewise.
+ * sysdeps/sparc/sparc64/dl-machine.h (elf_machine_fixup_plt): Likewise.
+
+ * sysdeps/powerpc/dl-machine.h (elf_machine_fixup_plt): Likewise.
+ Make it an inline function returning value after calling
+ __elf_machine_fixup_plt().
+
+ * elf/dl-sym.c (_dl_vsym): Use DL_SYMBOL_ADDRESS() to obtain the
+ symbol address.
+
+ * elf/dl-symbol.c (_dl_symbol_value): Use LOOKUP_VALUE_ADDRESS to
+ obtain the symbol address.
+
+ * sysdeps/generic/ldsodefs.h: Add generic DL_SYMBOL_ADDRESS() macro
+ depending on the definition of ELF_FUNCTION_PTR_IS_SPECIAL.
+
+ * sysdeps/ia64/dl-machine.h: Add DL_SYMBOL_ADDRESS() macro calling
+ _dl_symbol_address() - this way DL_SYMBOL_ADDRESS() turns into an
+ inline on non ia64.
+
+2000-04-28 Jes Sorensen <jes@linuxcare.com>
+
+ * elf/dl-runtime.c (fixup): Use the portable macros to get the
+ symbol address of an object.
+
+ * elf/dl-runtime.c (fixup-profile): Use the portable macros to get
+ the symbol address of an object.
+
+ * elf/dl-libc.c (struct do_dlsym_args): Change loadbase to a lookup_t.
+ * elf/dl-lookup.c (_dl_lookup_symbol): Likewise.
+ (_dl_lookup_symbol_skip): Likewise.
+ (_dl_lookup_versioned_symbol): Likewise.
+ (_dl_lookup_versioned_symbol_skip): Likewise.
+
+2000-04-27 Jes Sorensen <jes@linuxcare.com>
+
+ * elf/rtld.c (_dl_start): Get the function pointer return address
+ via _dl_start_address for architectures that need a function
+ pointer descriptor rather than just a pointer (ia64).
+
+ * sysdeps/generic/dl-lookupcfg.h: New file.
+ * sysdeps/ia64/dl-lookupcfg.h: New file.
+ * sysdeps/ia64/dl-machine.h: New file.
+ * sysdeps/ia64/dl-symaddr.c: New file.
+ * sysdeps/ia64/dl-fptr.c: New file.
+
+ * elf/elf.h: Add IA-64 specific definitions.
+
2000-05-04 Jakub Jelinek <jakub@redhat.com>
* sysdeps/generic/bits/confname.h (_SC* enum): Avoid comma at the
const char *name;
/* Return values of do_dlsym. */
- ElfW(Addr) loadbase;
+ lookup_t loadbase;
const ElfW(Sym) *ref;
};
As a refinement, sometimes we have an address that we would
prefer to map such objects at; but this is only a preference,
the OS can do whatever it likes. */
- caddr_t mapat;
ElfW(Addr) mappref;
mappref = (ELF_PREFERRED_ADDRESS (loader, maplength, c->mapstart)
- MAP_BASE_ADDR (l));
- mapat = map_segment (mappref, maplength, c->prot, 0, c->mapoff);
+
+ /* Remember which part of the address space this object uses. */
+ l->l_map_start = map_segment (mappref, maplength, c->prot, 0,
+ c->mapoff);
+ l->l_map_end = l->l_map_start + maplength;
l->l_addr = (ElfW(Addr)) mapat - c->mapstart;
/* Change protection on the excess portion to disallow all access;
unallocated. Then jump into the normal segment-mapping loop to
handle the portion of the segment past the end of the file
mapping. */
- __mprotect ((caddr_t) (l->l_addr + c->mapend),
+ __mprotect ((caddr_t) l->l_map_start,
loadcmds[nloadcmds - 1].allocend - c->mapend,
0);
- /* Remember which part of the address space this object uses. */
- l->l_map_start = c->mapstart + l->l_addr;
- l->l_map_end = l->l_map_start + maplength;
-
goto postmap;
}
else
add_dependency (struct link_map *undef_map, struct link_map *map)
{
struct link_map **list;
- unsigned act;
+ unsigned int act;
unsigned int i;
int result = 0;
/* Search loaded objects' symbol tables for a definition of the symbol
UNDEF_NAME. */
-ElfW(Addr)
+lookup_t
internal_function
_dl_lookup_symbol (const char *undef_name, struct link_map *undef_map,
const ElfW(Sym) **ref, struct r_scope_elem *symbol_scope[],
": symbol `", undef_name, "'\n", NULL);
*ref = current_value.s;
- return current_value.m->l_addr;
+ return LOOKUP_VALUE (current_value.m);
}
it only considers objects which were loaded after the described
object. If there are more search lists the object described by
SKIP_MAP is only skipped. */
-ElfW(Addr)
+lookup_t
internal_function
_dl_lookup_symbol_skip (const char *undef_name,
struct link_map *undef_map, const ElfW(Sym) **ref,
": symbol `", undef_name, "' (skip)\n", NULL);
*ref = current_value.s;
- return current_value.m->l_addr;
+ return LOOKUP_VALUE (current_value.m);
}
symbol.
XXX We'll see whether we need this separate function. */
-ElfW(Addr)
+lookup_t
internal_function
_dl_lookup_versioned_symbol (const char *undef_name,
struct link_map *undef_map, const ElfW(Sym) **ref,
"]\n", NULL);
*ref = current_value.s;
- return current_value.m->l_addr;
+ return LOOKUP_VALUE (current_value.m);
}
/* Similar to _dl_lookup_symbol_skip but takes an additional argument
with the version we are looking for. */
-ElfW(Addr)
+lookup_t
internal_function
_dl_lookup_versioned_symbol_skip (const char *undef_name,
struct link_map *undef_map,
"] (skip)\n", NULL);
*ref = current_value.s;
- return current_value.m->l_addr;
+ return LOOKUP_VALUE (current_value.m);
}
const char *strtab = (const void *) D_PTR (l, l_info[DT_STRTAB]);
/* This macro is used as a callback from the ELF_DYNAMIC_RELOCATE code. */
+#define RESOLVE_MAP(ref, version, flags) \
+ (ELFW(ST_BIND) ((*ref)->st_info) != STB_LOCAL \
+ ? ((version) != NULL && (version)->hash != 0 \
+ ? _dl_lookup_versioned_symbol (strtab + (*ref)->st_name, l, (ref), \
+ scope, (version), (flags)) \
+ : _dl_lookup_symbol (strtab + (*ref)->st_name, l, (ref), scope, \
+ (flags))) \
+ : l)
#define RESOLVE(ref, version, flags) \
(__builtin_expect (ELFW(ST_VISIBILITY) ((*ref)->st_other), 0) == 0 \
? ((version) != NULL && (version)->hash != 0 \
= (const void *) (D_PTR (l, l_info[DT_JMPREL]) + reloc_offset);
const ElfW(Sym) *sym = &symtab[ELFW(R_SYM) (reloc->r_info)];
void *const rel_addr = (void *)(l->l_addr + reloc->r_offset);
+ lookup_t result;
ElfW(Addr) value;
/* The use of `alloca' here looks ridiculous but it helps. The goal is
if (version->hash != 0)
{
- value = _dl_lookup_versioned_symbol(strtab + sym->st_name, l,
- &sym, l->l_scope, version,
- ELF_MACHINE_JMP_SLOT);
+ result = _dl_lookup_versioned_symbol (strtab + sym->st_name,
+ l, &sym, l->l_scope,
+ version,
+ ELF_MACHINE_JMP_SLOT);
break;
}
}
case 0:
- value = _dl_lookup_symbol (strtab + sym->st_name, l, &sym,
- l->l_scope, ELF_MACHINE_JMP_SLOT);
+ result = _dl_lookup_symbol (strtab + sym->st_name, l, &sym,
+ l->l_scope, ELF_MACHINE_JMP_SLOT);
}
- /* Currently value contains the base load address of the object
- that defines sym. Now add in the symbol offset. */
- value = (sym ? value + sym->st_value : 0);
+ /* Currently result contains the base load address (or link map)
+ of the object that defines sym. Now add in the symbol
+ offset. */
+ value = (sym ? LOOKUP_VALUE_ADDRESS (result) + sym->st_value : 0);
}
else
+ {
/* We already found the symbol. The module (and therefore its load
address) is also known. */
- value = l->l_addr + sym->st_value;
+ value = l->l_addr + sym->st_value;
+#ifdef DL_LOOKUP_RETURNS_MAP
+ result = l;
+#endif
+ }
/* And now perhaps the relocation addend. */
value = elf_machine_plt_value (l, reloc, value);
/* Finally, fix up the plt itself. */
- elf_machine_fixup_plt (l, reloc, rel_addr, value);
-
- return value;
+ return elf_machine_fixup_plt (l, result, reloc, rel_addr, value);
}
#endif
{
void (*mcount_fct) (ElfW(Addr), ElfW(Addr)) = _dl_mcount;
ElfW(Addr) *resultp;
+ lookup_t result;
ElfW(Addr) value;
/* The use of `alloca' here looks ridiculous but it helps. The goal is
if (version->hash != 0)
{
- value = _dl_lookup_versioned_symbol(strtab + sym->st_name,
- l, &sym, l->l_scope,
- version,
- ELF_MACHINE_JMP_SLOT);
+ result = _dl_lookup_versioned_symbol(strtab + sym->st_name,
+ l, &sym, l->l_scope,
+ version,
+ ELF_MACHINE_JMP_SLOT);
break;
}
}
case 0:
- value = _dl_lookup_symbol (strtab + sym->st_name, l, &sym,
- l->l_scope, ELF_MACHINE_JMP_SLOT);
+ result = _dl_lookup_symbol (strtab + sym->st_name, l, &sym,
+ l->l_scope, ELF_MACHINE_JMP_SLOT);
}
- /* Currently value contains the base load address of the object
- that defines sym. Now add in the symbol offset. */
- value = (sym ? value + sym->st_value : 0);
+ /* Currently result contains the base load address (or link map)
+ of the object that defines sym. Now add in the symbol
+ offset. */
+ value = (sym ? LOOKUP_VALUE_ADDRESS (result) + sym->st_value : 0);
}
else
+ {
/* We already found the symbol. The module (and therefore its load
address) is also known. */
value = l->l_addr + sym->st_value;
-
+#ifdef DL_LOOKUP_RETURNS_MAP
+ result = l;
+#endif
+ }
/* And now perhaps the relocation addend. */
value = elf_machine_plt_value (l, reloc, value);
/* Look up a symbol in a shared object loaded by `dlopen'.
- Copyright (C) 1999 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
internal_function
_dl_sym (void *handle, const char *name, void *who)
{
- ElfW(Addr) loadbase;
const ElfW(Sym) *ref = NULL;
+ lookup_t result;
if (handle == RTLD_DEFAULT)
/* Search the global scope. */
- loadbase = _dl_lookup_symbol (name, NULL, &ref, _dl_global_scope, 0);
+ result = _dl_lookup_symbol (name, NULL, &ref, _dl_global_scope, 0);
else
{
struct link_map *l, *match;
main program (we hope). */
match = _dl_loaded;
- loadbase = _dl_lookup_symbol (name, match, &ref, map->l_local_scope,
- 0);
+ result = _dl_lookup_symbol (name, match, &ref, map->l_local_scope,
+ 0);
}
else
{
while (l->l_loader)
l = l->l_loader;
- loadbase = _dl_lookup_symbol_skip (name, l, &ref, l->l_local_scope,
- match);
+ result = _dl_lookup_symbol_skip (name, l, &ref, l->l_local_scope,
+ match);
}
}
- if (loadbase)
- return (void *) (loadbase + ref->st_value);
+ if (result)
+ return DL_SYMBOL_ADDRESS (result, ref);
return NULL;
}
internal_function
_dl_vsym (void *handle, const char *name, const char *version, void *who)
{
- ElfW(Addr) loadbase;
const ElfW(Sym) *ref = NULL;
struct r_found_version vers;
+ lookup_t result;
/* Compute hash value to the version string. */
vers.name = version;
if (handle == RTLD_DEFAULT)
/* Search the global scope. */
- loadbase = _dl_lookup_versioned_symbol (name, NULL, &ref, _dl_global_scope,
- &vers, 0);
+ result = _dl_lookup_versioned_symbol (name, NULL, &ref, _dl_global_scope,
+ &vers, 0);
else if (handle == RTLD_NEXT)
{
struct link_map *l, *match;
while (l->l_loader)
l = l->l_loader;
- loadbase = _dl_lookup_versioned_symbol_skip (name, l, &ref,
- l->l_local_scope,
- &vers, match);
+ result = _dl_lookup_versioned_symbol_skip (name, l, &ref,
+ l->l_local_scope,
+ &vers, match);
}
else
{
/* Search the scope of the given object. */
struct link_map *map = handle;
- loadbase = _dl_lookup_versioned_symbol (name, map, &ref,
- map->l_local_scope, &vers, 0);
+ result = _dl_lookup_versioned_symbol (name, map, &ref,
+ map->l_local_scope, &vers, 0);
}
- if (loadbase)
- return (void *) (loadbase + ref->st_value);
-
+ if (result)
+ return DL_SYMBOL_ADDRESS (result, ref);
return NULL;
}
/* Look up a symbol's run-time value in the scope of a loaded object.
- Copyright (C) 1995,96,98,99,2000 Free Software Foundation, Inc.
+ Copyright (C) 1995, 96, 98, 99, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
internal_function
_dl_symbol_value (struct link_map *map, const char *name)
{
- ElfW(Addr) loadbase;
const ElfW(Sym) *ref = NULL;
- loadbase = _dl_lookup_symbol (name, map, &ref, map->l_local_scope, 0);
- return loadbase + ref->st_value;
+ lookup_t result;
+ result = _dl_lookup_symbol (name, map, &ref, map->l_local_scope, 0);
+ return (result ? LOOKUP_VALUE_ADDRESS (result) : 0) + ref->st_value;
}
/* Keep this the last entry. */
#define R_ARM_NUM 256
+/* IA-64 specific declarations. */
+
+/* Processor specific flags for the Ehdr e_flags field. */
+#define EF_IA_64_MASKOS 0x0000000f /* os-specific flags */
+#define EF_IA_64_ABI64 0x00000010 /* 64-bit ABI */
+#define EF_IA_64_ARCH 0xff000000 /* arch. version mask */
+
+/* Processor specific values for the Phdr p_type field. */
+#define PT_IA_64_ARCHEXT (PT_LOPROC + 0) /* arch extension bits */
+#define PT_IA_64_UNWIND (PT_LOPROC + 1) /* ia64 unwind bits */
+
+/* Processor specific flags for the Phdr p_flags field. */
+#define PF_IA_64_NORECOV 0x80000000 /* spec insns w/o recovery */
+
+/* Processor specific values for the Shdr sh_type field. */
+#define SHT_IA_64_EXT (SHT_LOPROC + 0) /* extension bits */
+#define SHT_IA_64_UNWIND (SHT_LOPROC + 1) /* unwind bits */
+
+/* Processor specific flags for the Shdr sh_flags field. */
+#define SHF_IA_64_SHORT 0x10000000 /* section near gp */
+#define SHF_IA_64_NORECOV 0x20000000 /* spec insns w/o recovery */
+
+/* Processor specific values for the Dyn d_tag field. */
+#define DT_IA_64_PLT_RESERVE (DT_LOPROC + 0)
+#define DT_IA_64_NUM 1
+
+/* IA-64 relocations. */
+#define R_IA64_NONE 0x00 /* none */
+#define R_IA64_IMM14 0x21 /* symbol + addend, add imm14 */
+#define R_IA64_IMM22 0x22 /* symbol + addend, add imm22 */
+#define R_IA64_IMM64 0x23 /* symbol + addend, mov imm64 */
+#define R_IA64_DIR32MSB 0x24 /* symbol + addend, data4 MSB */
+#define R_IA64_DIR32LSB 0x25 /* symbol + addend, data4 LSB */
+#define R_IA64_DIR64MSB 0x26 /* symbol + addend, data8 MSB */
+#define R_IA64_DIR64LSB 0x27 /* symbol + addend, data8 LSB */
+#define R_IA64_GPREL22 0x2a /* @gprel(sym + add), add imm22 */
+#define R_IA64_GPREL64I 0x2b /* @gprel(sym + add), mov imm64 */
+#define R_IA64_GPREL64MSB 0x2e /* @gprel(sym + add), data8 MSB */
+#define R_IA64_GPREL64LSB 0x2f /* @gprel(sym + add), data8 LSB */
+#define R_IA64_LTOFF22 0x32 /* @ltoff(sym + add), add imm22 */
+#define R_IA64_LTOFF64I 0x33 /* @ltoff(sym + add), mov imm64 */
+#define R_IA64_PLTOFF22 0x3a /* @pltoff(sym + add), add imm22 */
+#define R_IA64_PLTOFF64I 0x3b /* @pltoff(sym + add), mov imm64 */
+#define R_IA64_PLTOFF64MSB 0x3e /* @pltoff(sym + add), data8 MSB */
+#define R_IA64_PLTOFF64LSB 0x3f /* @pltoff(sym + add), data8 LSB */
+#define R_IA64_FPTR64I 0x43 /* @fptr(sym + add), mov imm64 */
+#define R_IA64_FPTR32MSB 0x44 /* @fptr(sym + add), data4 MSB */
+#define R_IA64_FPTR32LSB 0x45 /* @fptr(sym + add), data4 LSB */
+#define R_IA64_FPTR64MSB 0x46 /* @fptr(sym + add), data8 MSB */
+#define R_IA64_FPTR64LSB 0x47 /* @fptr(sym + add), data8 LSB */
+#define R_IA64_PCREL21B 0x49 /* @pcrel(sym + add), ptb, call */
+#define R_IA64_PCREL21M 0x4a /* @pcrel(sym + add), chk.s */
+#define R_IA64_PCREL21F 0x4b /* @pcrel(sym + add), fchkf */
+#define R_IA64_PCREL32MSB 0x4c /* @pcrel(sym + add), data4 MSB */
+#define R_IA64_PCREL32LSB 0x4d /* @pcrel(sym + add), data4 LSB */
+#define R_IA64_PCREL64MSB 0x4e /* @pcrel(sym + add), data8 MSB */
+#define R_IA64_PCREL64LSB 0x4f /* @pcrel(sym + add), data8 LSB */
+#define R_IA64_LTOFF_FPTR22 0x52 /* @ltoff(@fptr(s+a)), imm22 */
+#define R_IA64_LTOFF_FPTR64I 0x53 /* @ltoff(@fptr(s+a)), imm64 */
+#define R_IA64_SEGREL32MSB 0x5c /* @segrel(sym + add), data4 MSB */
+#define R_IA64_SEGREL32LSB 0x5d /* @segrel(sym + add), data4 LSB */
+#define R_IA64_SEGREL64MSB 0x5e /* @segrel(sym + add), data8 MSB */
+#define R_IA64_SEGREL64LSB 0x5f /* @segrel(sym + add), data8 LSB */
+#define R_IA64_SECREL32MSB 0x64 /* @secrel(sym + add), data4 MSB */
+#define R_IA64_SECREL32LSB 0x65 /* @secrel(sym + add), data4 LSB */
+#define R_IA64_SECREL64MSB 0x66 /* @secrel(sym + add), data8 MSB */
+#define R_IA64_SECREL64LSB 0x67 /* @secrel(sym + add), data8 LSB */
+#define R_IA64_REL32MSB 0x6c /* data 4 + REL */
+#define R_IA64_REL32LSB 0x6d /* data 4 + REL */
+#define R_IA64_REL64MSB 0x6e /* data 8 + REL */
+#define R_IA64_REL64LSB 0x6f /* data 8 + REL */
+#define R_IA64_LTV32MSB 0x70 /* symbol + addend, data4 MSB */
+#define R_IA64_LTV32LSB 0x71 /* symbol + addend, data4 LSB */
+#define R_IA64_LTV64MSB 0x72 /* symbol + addend, data8 MSB */
+#define R_IA64_LTV64LSB 0x73 /* symbol + addend, data8 LSB */
+#define R_IA64_IPLTMSB 0x80 /* dynamic reloc, imported PLT, MSB */
+#define R_IA64_IPLTLSB 0x81 /* dynamic reloc, imported PLT, LSB */
+#define R_IA64_LTOFF22X 0x86 /* LTOFF22, relaxable. */
+#define R_IA64_LDXMOV 0x87 /* Use of LTOFF22X. */
+
__END_DECLS
#endif /* elf.h */
/* This #define produces dynamic linking inline functions for
bootstrap relocation instead of general-purpose relocation. */
#define RTLD_BOOTSTRAP
+#define RESOLVE_MAP(sym, version, flags) \
+ ((*(sym))->st_shndx == SHN_UNDEF ? 0 : &bootstrap_map)
#define RESOLVE(sym, version, flags) \
((*(sym))->st_shndx == SHN_UNDEF ? 0 : bootstrap_map.l_addr)
#include "dynamic-link.h"
header table in core. Put the rest of _dl_start into a separate
function, that way the compiler cannot put accesses to the GOT
before ELF_DYNAMIC_RELOCATE. */
- return _dl_start_final (arg, &bootstrap_map, start_time);
+ {
+ ElfW(Addr) entry = _dl_start_final (arg, &bootstrap_map, start_time);
+
+#ifndef ELF_MACHINE_START_ADDRESS
+# define ELF_MACHINE_START_ADDRESS(map, start) (start)
+#endif
+
+ return ELF_MACHINE_START_ADDRESS (_dl_loaded, entry);
+ }
}
for (i = 1; i < _dl_argc; ++i)
{
const ElfW(Sym) *ref = NULL;
- ElfW(Addr) loadbase = _dl_lookup_symbol (_dl_argv[i], _dl_loaded,
- &ref, _dl_loaded->l_scope,
- ELF_MACHINE_JMP_SLOT);
+ ElfW(Addr) loadbase;
+ lookup_t result;
char buf[20], *bp;
+
+ result = _dl_lookup_symbol (_dl_argv[i], _dl_loaded,
+ &ref, _dl_loaded->l_scope,
+ ELF_MACHINE_JMP_SLOT);
+
+ loadbase = LOOKUP_VALUE_ADDRESS (result);
+
buf[sizeof buf - 1] = '\0';
bp = _itoa_word (ref->st_value, &buf[sizeof buf - 1], 16, 0);
while ((size_t) (&buf[sizeof buf - 1] - bp) < sizeof loadbase * 2)
are usually many many terabytes away. */
Elf64_Addr dot;
- long zero_disp;
+ long int zero_disp;
asm("br %0, 1f\n\t"
".weak __load_address_undefined\n\t"
/* If the first instruction of the plt entry is not
"br $28, plt0", we cannot do lazy relocation. */
- lazy = (*(unsigned *)(plt + 32) == 0xc39ffff7);
+ lazy = (*(unsigned int *)(plt + 32) == 0xc39ffff7);
}
return lazy;
/* Fix up the instructions of a PLT entry to invoke the function
rather than the dynamic linker. */
-static inline void
-elf_machine_fixup_plt(struct link_map *l, const Elf64_Rela *reloc,
- Elf64_Addr *got_addr, Elf64_Addr value)
+static inline Elf64_Addr
+elf_machine_fixup_plt (struct link_map *l, lookup_t t,
+ const Elf64_Rela *reloc,
+ Elf64_Addr *got_addr, Elf64_Addr value)
{
const Elf64_Rela *rela_plt;
Elf64_Word *plte;
- long edisp;
+ long int edisp;
/* Store the value we are going to load. */
*got_addr = value;
plte += 3 * (reloc - rela_plt);
/* Find the displacement from the plt entry to the function. */
- edisp = (long)(value - (Elf64_Addr)&plte[3]) / 4;
+ edisp = (long int) (value - (Elf64_Addr)&plte[3]) / 4;
if (edisp >= -0x100000 && edisp < 0x100000)
{
int hi, lo;
hi = value - (Elf64_Addr)&plte[0];
- lo = (short)hi;
+ lo = (short int) hi;
hi = (hi - lo) >> 16;
/* Emit "lda $27,lo($27)" */
This will be taken care of in _dl_runtime_resolve. If instead we are
doing this as part of non-lazy startup relocation, that bit of code
hasn't made it into Icache yet, so there's nothing to clean up. */
+
+ return value;
}
/* Return the final value of a plt relocation. */
const struct r_found_version *version,
Elf64_Addr *const reloc_addr)
{
- unsigned long const r_type = ELF64_R_TYPE (reloc->r_info);
+ unsigned long int const r_type = ELF64_R_TYPE (reloc->r_info);
#ifndef RTLD_BOOTSTRAP
/* This is defined in rtld.c, but nowhere in the static libc.a; make the
Elf64_Addr l_addr, const Elf64_Rela *reloc)
{
Elf64_Addr * const reloc_addr = (void *)(l_addr + reloc->r_offset);
- unsigned long const r_type = ELF64_R_TYPE (reloc->r_info);
+ unsigned long int const r_type = ELF64_R_TYPE (reloc->r_info);
if (r_type == R_ALPHA_JMP_SLOT)
{
_dl_platform = NULL;
}
-static inline void
-elf_machine_fixup_plt (struct link_map *map, const Elf32_Rel *reloc,
+static inline Elf32_Addr
+elf_machine_fixup_plt (struct link_map *map, lookup_t t,
+ const Elf32_Rel *reloc,
Elf32_Addr *reloc_addr, Elf32_Addr value)
{
- *reloc_addr = value;
+ return *reloc_addr = value;
}
/* Return the final value of a plt relocation. */
--- /dev/null
+/* Configuration of lookup functions.
+ Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* Some platforms need more information from the symbol lookup function
+ than just the address. But this is not generally the case. */
+#undef DL_LOOKUP_RETURNS_MAP
/* Fixup a PLT entry to bounce directly to the function at VALUE. */
-static inline void
-elf_machine_fixup_plt (struct link_map *map, const Elf32_Rel *reloc,
+static inline Elf32_Addr
+elf_machine_fixup_plt (struct link_map *map, lookup_t t,
+ const Elf32_Rel *reloc,
Elf32_Addr *reloc_addr, Elf32_Addr value)
{
- *reloc_addr = value;
+ return *reloc_addr = value;
}
/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
#include <elf.h>
#include <dlfcn.h>
#include <link.h>
+#include <dl-lookupcfg.h>
__BEGIN_DECLS
# define D_PTR(map,i) map->i->d_un.d_ptr
#endif
+/* On some platforms more information than just the address of the symbol
+ is needed from the lookup functions. In this case we return the whole
+ link map. */
+#ifdef DL_LOOKUP_RETURNS_MAP
+typedef struct link_map *lookup_t;
+# define LOOKUP_VALUE(map) map
+# define LOOKUP_VALUE_ADDRESS(map) (map ? map->l_addr : 0)
+#else
+typedef ElfW(Addr) lookup_t;
+# define LOOKUP_VALUE(map) map->l_addr
+# define LOOKUP_VALUE_ADDRESS(address) address
+#endif
+
+/* on some architectures a pointer to a function is not just a pointer
+ to the actual code of the function but rather an architecture
+ specific descriptor. */
+#ifndef ELF_FUNCTION_PTR_IS_SPECIAL
+#define DL_SYMBOL_ADDRESS(map, ref) \
+ (void *) (LOOKUP_VALUE_ADDRESS (map) + ref->st_value)
+#endif
+
/* For the version handling we need an array with only names and their
hash values. */
struct r_found_version
RELOC_TYPE is a machine-dependent reloc type, which is passed to
the `elf_machine_lookup_*_p' macros in dl-machine.h to affect which
symbols can be chosen. */
-extern ElfW(Addr) _dl_lookup_symbol (const char *undef,
- struct link_map *undef_map,
- const ElfW(Sym) **sym,
- struct r_scope_elem *symbol_scope[],
- int reloc_type)
+extern lookup_t _dl_lookup_symbol (const char *undef,
+ struct link_map *undef_map,
+ const ElfW(Sym) **sym,
+ struct r_scope_elem *symbol_scope[],
+ int reloc_type)
internal_function;
/* Lookup versioned symbol. */
-extern ElfW(Addr) _dl_lookup_versioned_symbol (const char *undef,
- struct link_map *undef_map,
- const ElfW(Sym) **sym,
- struct r_scope_elem *symbol_scope[],
- const struct r_found_version *version,
- int reloc_type)
+extern lookup_t _dl_lookup_versioned_symbol (const char *undef,
+ struct link_map *undef_map,
+ const ElfW(Sym) **sym,
+ struct r_scope_elem *symbol_scope[],
+ const struct r_found_version *version,
+ int reloc_type)
internal_function;
/* For handling RTLD_NEXT we must be able to skip shared objects. */
-extern ElfW(Addr) _dl_lookup_symbol_skip (const char *undef,
- struct link_map *undef_map,
- const ElfW(Sym) **sym,
- struct r_scope_elem *symbol_scope[],
- struct link_map *skip_this)
+extern lookup_t _dl_lookup_symbol_skip (const char *undef,
+ struct link_map *undef_map,
+ const ElfW(Sym) **sym,
+ struct r_scope_elem *symbol_scope[],
+ struct link_map *skip_this)
internal_function;
/* For handling RTLD_NEXT with versioned symbols we must be able to
skip shared objects. */
-extern ElfW(Addr) _dl_lookup_versioned_symbol_skip (const char *undef,
- struct link_map *undef_map,
- const ElfW(Sym) **sym,
- struct r_scope_elem *symbol_scope[],
- const struct r_found_version *version,
- struct link_map *skip_this)
+extern lookup_t _dl_lookup_versioned_symbol_skip (const char *undef,
+ struct link_map *undef_map,
+ const ElfW(Sym) **sym,
+ struct r_scope_elem *symbol_scope[],
+ const struct r_found_version *version,
+ struct link_map *skip_this)
internal_function;
/* Look up symbol NAME in MAP's scope and return its run-time address. */
/* Machine-dependent ELF dynamic relocation inline functions. i386 version.
- Copyright (C) 1995,96,97,98,99,2000 Free Software Foundation, Inc.
+ Copyright (C) 1995, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
_dl_platform = NULL;
}
-static inline void
-elf_machine_fixup_plt (struct link_map *map, const Elf32_Rel *reloc,
+static inline Elf32_Addr
+elf_machine_fixup_plt (struct link_map *map, lookup_t t,
+ const Elf32_Rel *reloc,
Elf32_Addr *reloc_addr, Elf32_Addr value)
{
- *reloc_addr = value;
+ return *reloc_addr = value;
}
/* Return the final value of a plt relocation. */
--- /dev/null
+/* Unmap a loaded object. IA-64 version.
+ Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <unistd.h>
+#include <string.h>
+#include <sys/param.h>
+#include <sys/mman.h>
+#include <link.h>
+#include <ldsodefs.h>
+#include <elf/dynamic-link.h>
+#include <dl-machine.h>
+#ifdef _LIBC_REENTRANT
+# include <pt-machine.h>
+
+static int __ia64_fptr_lock = 0;
+#endif
+
+/* Because ld.so is now versioned, these functions can be in their own
+ file; no relocations need to be done to call them. Of course, if
+ ld.so is not versioned... */
+#if 0
+#ifndef DO_VERSIONING
+# error "This will not work with versioning turned off, sorry."
+#endif
+#endif
+
+#ifdef MAP_ANON
+/* The fd is not examined when using MAP_ANON. */
+#define ANONFD -1
+#else
+extern int _dl_zerofd;
+#define ANONFD _dl_zerofd
+#endif
+
+
+/* ld.so currently has 14 FPTR relocs, we take 256 and use them for
+ the relocs for the dynamic app itself. */
+struct ia64_fptr __boot_ldso_fptr[IA64_BOOT_FPTR_SIZE];
+struct ia64_fptr *__fptr_root = NULL;
+struct ia64_fptr *__fptr_next = __boot_ldso_fptr;
+static struct ia64_fptr *__fptr_free = NULL;
+int __fptr_count = IA64_BOOT_FPTR_SIZE;
+
+Elf64_Addr
+__ia64_make_fptr (const struct link_map *sym_map, Elf64_Addr value,
+ struct ia64_fptr **root, struct ia64_fptr *mem)
+{
+ struct ia64_fptr **loc;
+ struct ia64_fptr *f;
+
+#ifdef _LIBC_REENTRANT
+ /* Make sure we are alone. We don't need a lock during bootstrap. */
+ if (mem == NULL)
+ while (testandset (&__ia64_fptr_lock));
+#endif
+
+ /* Search the sorted linked list for an existing entry for this
+ symbol. */
+ loc = root;
+ f = *loc;
+ while (f != NULL && f->func <= value)
+ {
+ if (f->func == value)
+ goto found;
+ loc = &f->next;
+ f = *loc;
+ }
+
+ /* Not found. Create a new one. */
+ if (mem != NULL)
+ f = mem;
+ else if (__fptr_free != NULL)
+ {
+ f = __fptr_free;
+ __fptr_free = f->next;
+ }
+ else
+ {
+ if (__fptr_count == 0)
+ {
+#ifndef MAP_ANON
+# define MAP_ANON 0
+ if (_dl_zerofd == -1)
+ {
+ _dl_zerofd = _dl_sysdep_open_zero_fill ();
+ if (_dl_zerofd == -1)
+ {
+ __close (fd);
+ _dl_signal_error (errno, NULL,
+ "cannot open zero fill device");
+ }
+ }
+#endif
+
+ __fptr_next = __mmap (0, _dl_pagesize, PROT_READ | PROT_WRITE,
+ MAP_ANON | MAP_PRIVATE, ANONFD, 0);
+ if (__fptr_next == MAP_FAILED)
+ _dl_signal_error(errno, NULL, "cannot map page for fptr");
+ __fptr_count = _dl_pagesize / sizeof (struct ia64_fptr);
+ }
+ f = __fptr_next++;
+ __fptr_count--;
+ }
+
+ f->func = value;
+ /* GOT has already been relocated in elf_get_dynamic_info - don't
+ try to relocate it again. */
+ f->gp = sym_map->l_info[DT_PLTGOT]->d_un.d_ptr;
+ f->next = *loc;
+ *loc = f;
+
+found:
+#ifdef _LIBC_REENTRANT
+ /* Release the lock. */
+ if (mem == NULL)
+ __ia64_fptr_lock = 0;
+#endif
+
+ return (Elf64_Addr) f;
+}
+
+void
+_dl_unmap (struct link_map *map)
+{
+ struct ia64_fptr **floc;
+ struct ia64_fptr *f;
+ struct ia64_fptr **lloc;
+ struct ia64_fptr *l;
+
+ __munmap ((void *) map->l_map_start, map->l_map_end - map->l_map_start);
+
+#ifdef _LIBC_REENTRANT
+ /* Make sure we are alone. */
+ while (testandset (&__ia64_fptr_lock));
+#endif
+
+ /* Search the sorted linked list for the first entry for this object. */
+ floc = &__fptr_root;
+ f = *floc;
+ while (f != NULL && f->func < map->l_map_start)
+ {
+ floc = &f->next;
+ f = *floc;
+ }
+
+ /* We found one. */
+ if (f != NULL && f->func < map->l_map_end)
+ {
+ /* Get the last entry. */
+ lloc = floc;
+ l = f;
+ while (l && l->func < map->l_map_end)
+ {
+ lloc = &l->next;
+ l = *lloc;
+ }
+
+ /* Updated FPTR. */
+ *floc = l;
+
+ /* Prepend them to the free list. */
+ *lloc = __fptr_free;
+ __fptr_free = f;
+ }
+
+#ifdef _LIBC_REENTRANT
+ /* Release the lock. */
+ __ia64_fptr_lock = 0;
+#endif
+}
--- /dev/null
+/* Configuration of lookup functions.
+ Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* The ia64 need more information from the symbol lookup function
+ than just the address. */
+#define DL_LOOKUP_RETURNS_MAP
+#define ELF_FUNCTION_PTR_IS_SPECIAL
--- /dev/null
+/* Machine-dependent ELF dynamic relocation inline functions. IA-64 version.
+ Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If
+ not, write to the Free Software Foundation, Inc.,
+ 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#ifndef dl_machine_h
+#define dl_machine_h 1
+
+#define ELF_MACHINE_NAME "ia64"
+
+#include <assert.h>
+#include <string.h>
+#include <link.h>
+#include <errno.h>
+
+
+/* Translate a processor specific dynamic tag to the index
+ in l_info array. */
+#define DT_IA_64(x) (DT_IA_64_##x - DT_LOPROC + DT_NUM)
+
+
+/* An FPTR is a function descriptor. Properly they consist of just
+ FUNC and GP. But we want to traverse a binary tree too. */
+
+#define IA64_BOOT_FPTR_SIZE 256
+
+struct ia64_fptr
+{
+ Elf64_Addr func;
+ Elf64_Addr gp;
+ struct ia64_fptr *next;
+};
+
+extern struct ia64_fptr __boot_ldso_fptr[];
+extern struct ia64_fptr *__fptr_next;
+extern struct ia64_fptr *__fptr_root;
+extern int __fptr_count;
+
+extern Elf64_Addr __ia64_make_fptr (const struct link_map *, Elf64_Addr,
+ struct ia64_fptr **, struct ia64_fptr *);
+
+/* Return nonzero iff E_MACHINE is compatible with the running host. */
+static inline int
+elf_machine_matches_host (Elf64_Word e_machine)
+{
+ return e_machine == EM_IA_64;
+}
+
+void * _dl_symbol_address (const struct link_map *map, const ElfW(Sym) *ref);
+
+#define DL_SYMBOL_ADDRESS(map, ref) _dl_symbol_address(map, ref)
+
+
+/* Return the link-time address of _DYNAMIC. */
+static inline Elf64_Addr
+elf_machine_dynamic (void)
+{
+ Elf64_Addr *p;
+
+ __asm__(
+ ".section .sdata\n"
+ " .type __dynamic_ltv#, @object\n"
+ " .size __dynamic_ltv#, 8\n"
+ "__dynamic_ltv:\n"
+ " data8 @ltv(_DYNAMIC#)\n"
+ ".previous\n"
+ " addl %0 = @gprel(__dynamic_ltv#), gp ;;"
+ : "=r"(p));
+
+ return *p;
+}
+
+
+/* Return the run-time load address of the shared object. */
+static inline Elf64_Addr
+elf_machine_load_address (void)
+{
+ Elf64_Addr ip;
+ int *p;
+
+ __asm__(
+ "1: mov %0 = ip\n"
+ ".section .sdata\n"
+ "2: data4 @ltv(1b)\n"
+ " .align 8\n"
+ ".previous\n"
+ " addl %1 = @gprel(2b), gp ;;"
+ : "=r"(ip), "=r"(p));
+
+ return ip - (Elf64_Addr)*p;
+}
+
+
+/* Set up the loaded object described by L so its unrelocated PLT
+ entries will jump to the on-demand fixup code in dl-runtime.c. */
+
+static inline int
+elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
+{
+ extern void _dl_runtime_resolve (void);
+ extern void _dl_runtime_profile (void);
+
+ if (lazy)
+ {
+ register Elf64_Addr gp __asm__("gp");
+ Elf64_Addr *reserve, doit;
+
+ /*
+ * Careful with the typecast here or it will try to add l-l_addr
+ * pointer elements
+ */
+ reserve = (Elf64_Addr *)
+ (l->l_info[DT_IA_64(PLT_RESERVE)]->d_un.d_ptr + l->l_addr);
+ /* Identify this shared object. */
+ reserve[0] = (Elf64_Addr) l;
+
+ /* This function will be called to perform the relocation. */
+ if (!profile)
+ doit = (Elf64_Addr) ((struct ia64_fptr *)&_dl_runtime_resolve)->func;
+ else
+ {
+ if (_dl_name_match_p (_dl_profile, l))
+ {
+ /* This is the object we are looking for. Say that we really
+ want profiling and the timers are started. */
+ _dl_profile_map = l;
+ }
+ doit = (Elf64_Addr) ((struct ia64_fptr *)&_dl_runtime_profile)->func;
+ }
+
+ reserve[1] = doit;
+ reserve[2] = gp;
+ }
+
+ return lazy;
+}
+
+
+/*
+ This code is used in dl-runtime.c to call the `fixup' function
+ and then redirect to the address it returns. `fixup()' takes two
+ arguments, however fixup_profile() takes three.
+
+ The ABI specifies that we will never see more than 8 input
+ registers to a function call, thus it is safe to simply allocate
+ those, and simpler than playing stack games.
+ - 12/09/99 Jes
+ */
+#define TRAMPOLINE_TEMPLATE(tramp_name, fixup_name) \
+ extern void tramp_name (void); \
+ asm ( "\
+ .global " #tramp_name "#
+ .proc " #tramp_name "#
+" #tramp_name ":
+ { .mmi
+ alloc loc0 = ar.pfs, 8, 2, 3, 0
+ adds r2 = -144, r12
+ adds r3 = -128, r12
+ }
+ { .mii
+ adds r12 = -160, r12
+ mov loc1 = b0
+ mov out2 = b0 /* needed by fixup_profile */
+ ;;
+ }
+ { .mmi
+ stf.spill [r2] = f8, 32
+ stf.spill [r3] = f9, 32
+ mov out0 = r16
+ ;;
+ }
+ { .mmi
+ stf.spill [r2] = f10, 32
+ stf.spill [r3] = f11, 32
+ shl out1 = r15, 4
+ ;;
+ }
+ { .mmi
+ stf.spill [r2] = f12, 32
+ stf.spill [r3] = f13, 32
+ shladd out1 = r15, 3, out1
+ ;;
+ }
+ { .mmb
+ stf.spill [r2] = f14
+ stf.spill [r3] = f15
+ br.call.sptk.many b0 = " #fixup_name "#
+ }
+ { .mii
+ ld8 r9 = [ret0], 8
+ adds r2 = 16, r12
+ adds r3 = 32, r12
+ ;;
+ }
+ { .mmi
+ ldf.fill f8 = [r2], 32
+ ldf.fill f9 = [r3], 32
+ mov b0 = loc1
+ ;;
+ }
+ { .mmi
+ ldf.fill f10 = [r2], 32
+ ldf.fill f11 = [r3], 32
+ mov b6 = r9
+ ;;
+ }
+ { .mmi
+ ldf.fill f12 = [r2], 32
+ ldf.fill f13 = [r3], 32
+ mov ar.pfs = loc0
+ ;;
+ }
+ { .mmi
+ ldf.fill f14 = [r2], 32
+ ldf.fill f15 = [r3], 32
+ adds r12 = 160, r12
+ ;;
+ }
+ /* An alloc is needed for the break system call to work.
+ We don't care about the old value of the pfs register. */
+ { .mmb
+ alloc r2 = ar.pfs, 0, 0, 8, 0
+ ld8 gp = [ret0]
+ br.sptk.many b6
+ ;;
+ }
+ .endp " #tramp_name "#")
+
+#ifndef PROF
+#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
+ TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup); \
+ TRAMPOLINE_TEMPLATE (_dl_runtime_profile, profile_fixup);
+#else
+#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
+ TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup); \
+ strong_alias (_dl_runtime_resolve, _dl_runtime_profile);
+#endif
+
+
+/* Initial entry point code for the dynamic linker.
+ The C function `_dl_start' is the real entry point;
+ its return value is the user program's entry point. */
+
+#define RTLD_START asm ("\
+.text
+ .global _start#
+ .proc _start#
+_start:
+0: { .mii
+ alloc loc0 = ar.pfs, 0, 3, 4, 0
+ mov r2 = ip
+ addl r3 = @gprel(0b), r0
+ ;;
+ }
+ { .mlx
+ /* Calculate the GP, and save a copy in loc1. */
+ sub gp = r2, r3
+ movl r8 = 0x9804c0270033f
+ ;;
+ }
+ { .mii
+ mov ar.fpsr = r8
+ sub loc1 = r2, r3
+ /* _dl_start wants a pointer to the pointer to the arg block
+ and the arg block starts with an integer, thus the magic 16. */
+ adds out0 = 16, sp
+ }
+ { .bbb
+ br.call.sptk.many b0 = _dl_start#
+ ;;
+ }
+ .endp _start#
+ /* FALLTHRU */
+ .global _dl_start_user#
+ .proc _dl_start_user#
+_dl_start_user:
+ { .mii
+ /* Save the pointer to the user entry point fptr in loc2. */
+ mov loc2 = ret0
+ /* Store the highest stack address. */
+ addl r2 = @ltoff(__libc_stack_end#), gp
+ addl r3 = @gprel(_dl_skip_args), gp
+ ;;
+ }
+ { .mmi
+ ld8 r2 = [r2]
+ ld4 r3 = [r3]
+ adds r11 = 24, sp /* Load the address of argv. */
+ ;;
+ }
+ { .mii
+ st8 [r2] = sp
+ adds r10 = 16, sp /* Load the address of argc. */
+ mov out2 = r11
+ ;;
+ /* See if we were run as a command with the executable file
+ name as an extra leading argument. If so, adjust the argv
+ pointer to skip _dl_skip_args words.
+ Note that _dl_skip_args is an integer, not a long - Jes
+
+ The stack pointer has to be 16 byte aligned. We cannot simply
+ addjust the stack pointer. We have to move the whole argv and
+ envp. H.J. */
+ }
+ { .mmi
+ ld8 out1 = [r10] /* is argc actually stored as a long
+ or as an int? */
+ ;;
+ sub out1 = out1, r3 /* Get the new argc. */
+ shladd r15 = r3, 3, r11 /* The address of the argv we move */
+ ;;
+ }
+ /* ??? Could probably merge these two loops into 3 bundles.
+ using predication to control which set of copies we're on. */
+1: /* Copy argv. */
+ { .mfi
+ ld8 r16 = [r15], 8 /* Load the value in the old argv. */
+ ;;
+ }
+ { .mib
+ st8 [r11] = r16, 8 /* Store it in the new argv. */
+ cmp.ne p6, p7 = 0, r16
+(p6) br.cond.dptk.few 1b
+ ;;
+ }
+ { .mib
+ mov out3 = r11
+ addl out0 = @ltoff(_dl_loaded), gp
+ }
+1: /* Copy env. */
+ { .mfi
+ ld8 r16 = [r15], 8 /* Load the value in the old env. */
+ ;;
+ }
+ { .mib
+ st8 [r11] = r16, 8 /* Store it in the new env. */
+ cmp.ne p6, p7 = 0, r16
+(p6) br.cond.dptk.few 1b
+ ;;
+ }
+ { .mmb
+ st8 [r10] = out1 /* Record the new argc. */
+ ld8 out0 = [out0]
+ }
+ { .mfb
+ ld8 out0 = [out0] /* get the linkmap */
+ br.call.sptk.many b0 = _dl_init#
+ ;;
+ }
+ /* Pass our finializer function to the user,
+ and jump to the user's entry point. */
+ { .mmi
+ ld8 r3 = [loc2], 8
+ mov b0 = r0
+ }
+ { .mmi
+ addl ret0 = @ltoff(@fptr(_dl_fini#)), gp
+ ;;
+ mov b6 = r3
+ }
+ { .mmi
+ ld8 ret0 = [ret0]
+ ld8 gp = [loc2]
+ mov ar.pfs = loc0
+ ;;
+ }
+ { .mfb
+ br.sptk.many b6
+ ;;
+ }
+ .endp _dl_start_user#
+.previous");
+
+
+#ifndef RTLD_START_SPECIAL_INIT
+#define RTLD_START_SPECIAL_INIT /* nothing */
+#endif
+
+/* Nonzero iff TYPE describes relocation of a PLT entry, so
+ PLT entries should not be allowed to define the value. */
+/* ??? Ignore IPLTMSB for now. */
+#define elf_machine_lookup_noplt_p(type) ((type) == R_IA64_IPLTLSB)
+
+/* Nonzero iff TYPE should not be allowed to resolve to one of
+ the main executable's symbols, as for a COPY reloc, which we don't use. */
+#define elf_machine_lookup_noexec_p(type) (0)
+
+/* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */
+#define ELF_MACHINE_JMP_SLOT R_IA64_IPLTLSB
+
+/* According to the IA-64 specific documentation, Rela is always used. */
+#define ELF_MACHINE_NO_REL 1
+
+/* Since ia64's stack has to be 16byte aligned, we cannot arbitrarily
+ move the stack pointer. */
+#define ELF_MACHINE_FIXED_STACK 1
+
+/* Return the address of the entry point. */
+extern ElfW(Addr) _dl_start_address (const struct link_map *map,
+ ElfW(Addr) start);
+
+#define ELF_MACHINE_START_ADDRESS(map, start) \
+ _dl_start_address ((map), (start))
+
+#define elf_machine_profile_fixup_plt(l, reloc, rel_addr, value) \
+ elf_machine_fixup_plt ((l), (reloc), (rel_addr), (value))
+
+#define elf_machine_profile_plt(reloc_addr) ((Elf64_Addr) (reloc_addr))
+
+/* Fixup a PLT entry to bounce directly to the function at VALUE. */
+static inline Elf64_Addr
+elf_machine_fixup_plt (struct link_map *l, lookup_t t,
+ const Elf64_Rela *reloc,
+ Elf64_Addr *reloc_addr, Elf64_Addr value)
+{
+ /* l is the link_map for the caller, t is the link_map for the object
+ * being called */
+ /* got has already been relocated in elf_get_dynamic_info() */
+ reloc_addr[1] = t->l_info[DT_PLTGOT]->d_un.d_ptr;
+ reloc_addr[0] = value;
+ return (Elf64_Addr) reloc_addr;
+}
+
+/* Return the final value of a plt relocation. */
+static inline Elf64_Addr
+elf_machine_plt_value (struct link_map *map, const Elf64_Rela *reloc,
+ Elf64_Addr value)
+{
+ /* No need to handle rel vs rela since IA64 is rela only */
+ return value + reloc->r_addend;
+}
+
+#endif /* !dl_machine_h */
+
+#ifdef RESOLVE_MAP
+
+#define R_IA64_TYPE(R) ((R) & -8)
+#define R_IA64_FORMAT(R) ((R) & 7)
+
+#define R_IA64_FORMAT_32MSB 4
+#define R_IA64_FORMAT_32LSB 5
+#define R_IA64_FORMAT_64MSB 6
+#define R_IA64_FORMAT_64LSB 7
+
+
+/* Perform the relocation specified by RELOC and SYM (which is fully
+ resolved). MAP is the object containing the reloc. */
+static inline void
+elf_machine_rela (struct link_map *map,
+ const Elf64_Rela *reloc,
+ const Elf64_Sym *sym,
+ const struct r_found_version *version,
+ Elf64_Addr *const reloc_addr)
+{
+ unsigned long const r_type = ELF64_R_TYPE (reloc->r_info);
+ Elf64_Addr value;
+
+#ifndef RTLD_BOOTSTRAP
+ /* This is defined in rtld.c, but nowhere in the static libc.a; make the
+ reference weak so static programs can still link. This declaration
+ cannot be done when compiling rtld.c (i.e. #ifdef RTLD_BOOTSTRAP)
+ because rtld.c contains the common defn for _dl_rtld_map, which is
+ incompatible with a weak decl in the same file. */
+ weak_extern (_dl_rtld_map);
+#endif
+
+ /* We cannot use a switch here because we cannot locate the switch
+ jump table until we've self-relocated. */
+
+ if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_REL64LSB))
+ {
+ value = *reloc_addr;
+#ifndef RTLD_BOOTSTRAP
+ /* Already done in dynamic linker. */
+ if (map != &_dl_rtld_map)
+#endif
+ value += map->l_addr;
+ }
+ else if (r_type == R_IA64_NONE)
+ return;
+ else
+ {
+ struct link_map *sym_map;
+
+ /*
+ * RESOLVE_MAP() will return NULL if it fail to locate the symbol
+ */
+ if ((sym_map = RESOLVE_MAP (&sym, version, r_type)))
+ {
+ value = sym ? sym_map->l_addr + sym->st_value : 0;
+ value += reloc->r_addend;
+
+ if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_DIR64LSB))
+ ;/* No adjustment. */
+ else if (r_type == R_IA64_IPLTLSB)
+ {
+ elf_machine_fixup_plt (NULL, sym_map, reloc, reloc_addr, value);
+ return;
+ }
+ else if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_FPTR64LSB))
+#ifndef RTLD_BOOTSTRAP
+ value = __ia64_make_fptr (sym_map, value, &__fptr_root, NULL);
+#else
+ {
+ struct ia64_fptr *p_boot_ldso_fptr;
+ struct ia64_fptr **p_fptr_root;
+ int *p_fptr_count;
+
+ /* Special care must be taken to address these variables
+ during bootstrap. Further, since we don't know exactly
+ when __fptr_next will be relocated, we index directly
+ off __boot_ldso_fptr. */
+ asm ("addl %0 = @gprel(__boot_ldso_fptr#), gp\n\t"
+ "addl %1 = @gprel(__fptr_root#), gp\n\t"
+ "addl %2 = @gprel(__fptr_count#), gp"
+ : "=r"(p_boot_ldso_fptr),
+ "=r"(p_fptr_root),
+ "=r"(p_fptr_count));
+
+ /*
+ * Go from the top - __ia64_make_fptr goes from the bottom,
+ * this way we will never clash.
+ */
+ value = __ia64_make_fptr (sym_map, value, p_fptr_root,
+ &p_boot_ldso_fptr[--*p_fptr_count]);
+ }
+#endif
+ else if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_PCREL64LSB))
+ value -= (Elf64_Addr)reloc_addr & -16;
+ else
+ assert (! "unexpected dynamic reloc type");
+ }
+ else
+ value = 0;
+ }
+
+ /* ??? Ignore MSB and Instruction format for now. */
+ if (R_IA64_FORMAT (r_type) == R_IA64_FORMAT_64LSB)
+ *reloc_addr = value;
+ else if (R_IA64_FORMAT (r_type) == R_IA64_FORMAT_32LSB)
+ *(int *)reloc_addr = value;
+ else if (r_type == R_IA64_IPLTLSB)
+ {
+ reloc_addr[0] = 0;
+ reloc_addr[1] = 0;
+ }
+ else
+ assert (! "unexpected dynamic reloc format");
+}
+
+
+/* Perform a RELATIVE reloc on the .got entry that transfers to the .plt. */
+static inline void
+elf_machine_lazy_rel (struct link_map *map,
+ Elf64_Addr l_addr, const Elf64_Rela *reloc)
+{
+ Elf64_Addr * const reloc_addr = (void *)(l_addr + reloc->r_offset);
+ unsigned long const r_type = ELF64_R_TYPE (reloc->r_info);
+
+ if (r_type == R_IA64_IPLTLSB)
+ {
+ reloc_addr[0] += l_addr;
+ reloc_addr[1] += l_addr;
+ }
+ else if (r_type == R_IA64_NONE)
+ return;
+ else
+ assert (! "unexpected PLT reloc type");
+}
+
+#endif /* RESOLVE_MAP */
--- /dev/null
+/* Get the symbol address. IA-64 version.
+ Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <ldsodefs.h>
+#include <dl-machine.h>
+
+void *
+_dl_symbol_address (const struct link_map *map, const ElfW(Sym) *ref)
+{
+ Elf64_Addr value = (map ? map->l_addr : 0) + ref->st_value;
+
+ /* On ia64, we have to return the pointer to function descriptor. */
+ if (ELFW(ST_TYPE) (ref->st_info) == STT_FUNC)
+ return (void *) __ia64_make_fptr (map, value, &__fptr_root, NULL);
+ else
+ return (void *) value;
+}
+
+ElfW(Addr)
+_dl_start_address (const struct link_map *map, ElfW(Addr) start)
+{
+ return __ia64_make_fptr (map, start, &__fptr_root, NULL);
+}
/* The m68k never uses Elf32_Rel relocations. */
#define ELF_MACHINE_NO_REL 1
-static inline void
-elf_machine_fixup_plt (struct link_map *map, const Elf32_Rela *reloc,
+static inline Elf32_Addr
+elf_machine_fixup_plt (struct link_map *map, lookup_t t,
+ const Elf32_Rela *reloc,
Elf32_Addr *reloc_addr, Elf32_Addr value)
{
- *reloc_addr = value;
+ return *reloc_addr = value;
}
/* Return the final value of a plt relocation. On the m68k the JMP_SLOT
/* Machine-dependent ELF dynamic relocation inline functions. PowerPC version.
- Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1995, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
static inline Elf32_Addr
elf_machine_load_address (void)
{
- unsigned *got;
- unsigned *branchaddr;
+ unsigned int *got;
+ unsigned int *branchaddr;
/* This is much harder than you'd expect. Possibly I'm missing something.
The 'obvious' way:
}
/* Change the PLT entry whose reloc is 'reloc' to call the actual routine. */
-extern void __elf_machine_fixup_plt(struct link_map *map,
- const Elf32_Rela *reloc,
- Elf32_Addr *reloc_addr,
- Elf32_Addr finaladdr);
-#define elf_machine_fixup_plt __elf_machine_fixup_plt
+extern Elf32_Addr __elf_machine_fixup_plt (struct link_map *map,
+ const Elf32_Rela *reloc,
+ Elf32_Addr *reloc_addr,
+ Elf32_Addr finaladdr);
+
+static inline Elf32_Addr
+elf_machine_fixup_plt (struct link_map *l, lookup_t t,
+ const Elf32_Rela *reloc,
+ Elf32_Addr *reloc_addr, Elf64_Addr value)
+{
+ __elf_machine_fixup_plt (map, reloc, reloc_addr, finaladdr);
+ return value;
+}
/* Return the final value of a plt relocation. */
static inline Elf32_Addr
.size _dl_start_user, . - _dl_start_user
.previous");
-static inline void
-elf_machine_fixup_plt (struct link_map *map, const Elf32_Rela *reloc,
+static inline Elf32_Addr
+elf_machine_fixup_plt (struct link_map *map, lookup_t t,
+ const Elf32_Rela *reloc,
Elf32_Addr *reloc_addr, Elf32_Addr value)
{
#ifndef RTLD_BOOTSTRAP
reloc_addr[1] = OPCODE_SETHI_G1 | (value >> 10);
if (do_flush)
__asm __volatile ("flush %0+4" : : "r"(reloc_addr));
+
+ return value;
}
/* Return the final value of a plt relocation. */
/* We have 4 cases to handle. And we code different code sequences
for each one. I love V9 code models... */
-static inline void
-elf_machine_fixup_plt(struct link_map *map, const Elf64_Rela *reloc,
- Elf64_Addr *reloc_addr, Elf64_Addr value)
+static inline Elf64_Addr
+elf_machine_fixup_plt (struct link_map *map, lookup_t t,
+ const Elf64_Rela *reloc,
+ Elf64_Addr *reloc_addr, Elf64_Addr value)
{
unsigned int *insns = (unsigned int *) reloc_addr;
Elf64_Addr plt_vaddr = (Elf64_Addr) reloc_addr;
insns[1] = 0x03000000 | (high32 >> 10);
__asm __volatile ("flush %0 + 4" : : "r" (insns));
}
+
+ return value;
}
/* Return the final value of a plt relocation. */
projects / platform / upstream / linaro-glibc.git / commitdiff