This patch removes use of st_target_internal to cache the result of
comparing symbol names against CMSE_PREFIX. The problem with setting
a bit in st_target_internal in swap_symbol_in is that calling
bfd_elf_sym_name from swap_symbol_in requires symtab_hdr, and you
don't know for sure whether swap_symbol_in is operating on dynsyms
(and thus elf_tdata (abfd)->dynsymtab_hdr should be used) or on the
normal symtab (thus elf_tdata (abfd)->symtab_hdr). You can make an
educated guess based on abfd->flags & DYNAMIC but that relies on
knowing a lot about calls to bfd_elf_get_elf_syms, and is fragile in
the face of possible future changes.
include/
* elf/arm.h (ARM_GET_SYM_CMSE_SPCL, ARM_SET_SYM_CMSE_SPCL): Delete.
bfd/
* elf32-arm.c (cmse_scan): Don't use ARM_GET_SYM_CMSE_SPCL,
instead recognize CMSE_PREFIX in symbol name.
(elf32_arm_gc_mark_extra_sections): Likewise.
(elf32_arm_filter_cmse_symbols): Don't test ARM_GET_SYM_CMSE_SPCL.
(elf32_arm_swap_symbol_in): Don't invoke ARM_SET_SYM_CMSE_SPCL.
+2019-08-22 Alan Modra <amodra@gmail.com>
+
+ * elf32-arm.c (cmse_scan): Don't use ARM_GET_SYM_CMSE_SPCL,
+ instead recognize CMSE_PREFIX in symbol name.
+ (elf32_arm_gc_mark_extra_sections): Likewise.
+ (elf32_arm_filter_cmse_symbols): Don't test ARM_GET_SYM_CMSE_SPCL.
+ (elf32_arm_swap_symbol_in): Don't invoke ARM_SET_SYM_CMSE_SPCL.
+
2019-08-20 Dennis Zhang <dennis.zhang@arm.com>
* cpu-aarch64.c: New entries for Cortex-A34, Cortex-A65,
2019-08-20 Dennis Zhang <dennis.zhang@arm.com>
* cpu-aarch64.c: New entries for Cortex-A34, Cortex-A65,
if (i < ext_start)
{
cmse_sym = &local_syms[i];
if (i < ext_start)
{
cmse_sym = &local_syms[i];
- /* Not a special symbol. */
- if (!ARM_GET_SYM_CMSE_SPCL (cmse_sym->st_target_internal))
- continue;
sym_name = bfd_elf_string_from_elf_section (input_bfd,
symtab_hdr->sh_link,
cmse_sym->st_name);
sym_name = bfd_elf_string_from_elf_section (input_bfd,
symtab_hdr->sh_link,
cmse_sym->st_name);
+ if (!sym_name || !CONST_STRNEQ (sym_name, CMSE_PREFIX))
+ continue;
+
/* Special symbol with local binding. */
cmse_invalid = TRUE;
}
/* Special symbol with local binding. */
cmse_invalid = TRUE;
}
{
cmse_hash = elf32_arm_hash_entry (sym_hashes[i - ext_start]);
sym_name = (char *) cmse_hash->root.root.root.string;
{
cmse_hash = elf32_arm_hash_entry (sym_hashes[i - ext_start]);
sym_name = (char *) cmse_hash->root.root.root.string;
-
- /* Not a special symbol. */
- if (!ARM_GET_SYM_CMSE_SPCL (cmse_hash->root.target_internal))
+ if (!CONST_STRNEQ (sym_name, CMSE_PREFIX))
continue;
/* Special symbol has incorrect binding or type. */
continue;
/* Special symbol has incorrect binding or type. */
/* Assume it is a special symbol. If not, cmse_scan will
warn about it and user can do something about it. */
/* Assume it is a special symbol. If not, cmse_scan will
warn about it and user can do something about it. */
- if (ARM_GET_SYM_CMSE_SPCL (cmse_hash->root.target_internal))
+ if (CONST_STRNEQ (cmse_hash->root.root.root.string,
+ CMSE_PREFIX))
{
cmse_sec = cmse_hash->root.root.u.def.section;
if (!cmse_sec->gc_mark
{
cmse_sec = cmse_hash->root.root.u.def.section;
if (!cmse_sec->gc_mark
|| cmse_hash->root.type != STT_FUNC)
continue;
|| cmse_hash->root.type != STT_FUNC)
continue;
- if (!ARM_GET_SYM_CMSE_SPCL (cmse_hash->root.target_internal))
- continue;
-
syms[dst_count++] = sym;
}
free (cmse_name);
syms[dst_count++] = sym;
}
free (cmse_name);
const void *pshn,
Elf_Internal_Sym *dst)
{
const void *pshn,
Elf_Internal_Sym *dst)
{
- Elf_Internal_Shdr *symtab_hdr;
- const char *name = NULL;
-
if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
return FALSE;
dst->st_target_internal = 0;
if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
return FALSE;
dst->st_target_internal = 0;
else
ARM_SET_SYM_BRANCH_TYPE (dst->st_target_internal, ST_BRANCH_UNKNOWN);
else
ARM_SET_SYM_BRANCH_TYPE (dst->st_target_internal, ST_BRANCH_UNKNOWN);
- /* Mark CMSE special symbols. */
- symtab_hdr = & elf_symtab_hdr (abfd);
- if (symtab_hdr->sh_size)
- name = bfd_elf_sym_name (abfd, symtab_hdr, dst, NULL);
- if (name && CONST_STRNEQ (name, CMSE_PREFIX))
- ARM_SET_SYM_CMSE_SPCL (dst->st_target_internal);
-
+2019-08-22 Alan Modra <amodra@gmail.com>
+
+ * elf/arm.h (ARM_GET_SYM_CMSE_SPCL, ARM_SET_SYM_CMSE_SPCL): Delete.
+
2019-08-09 Mihailo Stojanovic <mihailo.stojanovic@rt-rk.com>
* elf/mips.h (SHT_GNU_XHASH): New define.
2019-08-09 Mihailo Stojanovic <mihailo.stojanovic@rt-rk.com>
* elf/mips.h (SHT_GNU_XHASH): New define.
| ((TYPE) & ENUM_ARM_ST_BRANCH_TYPE_BITMASK))
#endif
| ((TYPE) & ENUM_ARM_ST_BRANCH_TYPE_BITMASK))
#endif
-/* Get or set whether a symbol is a special symbol of an entry function of CMSE
- secure code. */
-#define ARM_GET_SYM_CMSE_SPCL(SYM_TARGET_INTERNAL) \
- (((SYM_TARGET_INTERNAL) >> 2) & 1)
-#define ARM_SET_SYM_CMSE_SPCL(SYM_TARGET_INTERNAL) \
- (SYM_TARGET_INTERNAL) |= 4
-