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| author | Alan Modra <amodra@gmail.com> | 2019-08-22 11:21:48 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2019-08-22 14:14:23 +0930 |
| commit | baf46cd78048e1b959462567556e1de1ef6b9039 (patch) | |
| tree | 26bc51513545bf742a1f392731b34a21ac2e40de /include | |
| parent | 65d20a7403f2a2a6b20572e007f43037306d2a09 (diff) | |
| download | gdb-baf46cd78048e1b959462567556e1de1ef6b9039.zip gdb-baf46cd78048e1b959462567556e1de1ef6b9039.tar.gz gdb-baf46cd78048e1b959462567556e1de1ef6b9039.tar.bz2 | |
ARM CMSE symbols
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.
Diffstat (limited to 'include')
| -rw-r--r-- | include/ChangeLog | 4 | ||||
| -rw-r--r-- | include/elf/arm.h | 7 |
2 files changed, 4 insertions, 7 deletions
diff --git a/include/ChangeLog b/include/ChangeLog index 1813cb3..e779c17 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,3 +1,7 @@ +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. diff --git a/include/elf/arm.h b/include/elf/arm.h index 5cb9970..75fb5e2 100644 --- a/include/elf/arm.h +++ b/include/elf/arm.h @@ -399,11 +399,4 @@ enum arm_st_branch_type { | ((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 - #endif /* _ELF_ARM_H */ |