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| author | Nick Clifton <nickc@redhat.com> | 2016-06-28 13:22:49 +0100 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2016-06-28 13:22:49 +0100 |
| commit | fca2a38fdb391f810e309a12d5279047d4edac34 (patch) | |
| tree | d58949ac31814d76712f1b4928493cc4dcca629c | |
| parent | 8b9a915daf91027050ad7145853ce8874034e60b (diff) | |
| download | gdb-fca2a38fdb391f810e309a12d5279047d4edac34.zip gdb-fca2a38fdb391f810e309a12d5279047d4edac34.tar.gz gdb-fca2a38fdb391f810e309a12d5279047d4edac34.tar.bz2 | |
Mark ARM mapping symbols in object files are precious, so that strip will not remove them.
* elf32-arm.c (elf32_arm_backend_symbol_processing): New
function. Marks mapping symbols in object files as precious, so
that strip will not remove them.
(elf_backend_symbol_processing): Define.
| -rw-r--r-- | bfd/ChangeLog | 7 | ||||
| -rw-r--r-- | bfd/elf32-arm.c | 19 |
2 files changed, 26 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 52b26fc..68d81c0 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,10 @@ +2016-06-28 Nick Clifton <nickc@redhat.com> + + * elf32-arm.c (elf32_arm_backend_symbol_processing): New + function. Marks mapping symbols in object files as precious, so + that strip will not remove them. + (elf_backend_symbol_processing): Define. + 2016-06-28 James Clarke <jrtc27@jrtc27.com> * elfxx-sparc.c (_bfd_sparc_elf_relocate_section): Don't convert diff --git a/bfd/elf32-arm.c b/bfd/elf32-arm.c index a7964c1..04e776c 100644 --- a/bfd/elf32-arm.c +++ b/bfd/elf32-arm.c @@ -18266,6 +18266,24 @@ elf32_arm_copy_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED, return FALSE; } +/* Make sure that mapping symbols in object files are not removed via the + "strip --strip-unneeded" tool. These symbols are needed in order to + correctly generate interworking veneers, and for byte swapping code + regions. Once an object file has been linked, it is safe to remove the + symbols as they will no longer be needed. */ + +static void +elf32_arm_backend_symbol_processing (bfd *abfd, asymbol *sym) +{ + if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0) + && sym->name != NULL + && sym->section != bfd_abs_section_ptr + && (strcmp (sym->name, "$a") == 0 + || strcmp (sym->name, "$t") == 0 + || strcmp (sym->name, "$d") == 0)) + sym->flags |= BSF_KEEP; +} + #undef elf_backend_copy_special_section_fields #define elf_backend_copy_special_section_fields elf32_arm_copy_special_section_fields @@ -18324,6 +18342,7 @@ elf32_arm_copy_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED, #define elf_backend_begin_write_processing elf32_arm_begin_write_processing #define elf_backend_add_symbol_hook elf32_arm_add_symbol_hook #define elf_backend_count_additional_relocs elf32_arm_count_additional_relocs +#define elf_backend_symbol_processing elf32_arm_backend_symbol_processing #define elf_backend_can_refcount 1 #define elf_backend_can_gc_sections 1 |