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| author | Alan Modra <amodra@gmail.com> | 2017-02-14 10:45:51 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2017-02-16 23:09:38 +1030 |
| commit | a8c75b765e57aaebb99d4e32e0f228835cff2737 (patch) | |
| tree | 2cea5382768b3cae9de0e04d151a7313d1024e77 /bfd/elf32-hppa.c | |
| parent | 247d6c4c14769b7576d810a381a68e35388ee874 (diff) | |
| download | gdb-a8c75b765e57aaebb99d4e32e0f228835cff2737.zip gdb-a8c75b765e57aaebb99d4e32e0f228835cff2737.tar.gz gdb-a8c75b765e57aaebb99d4e32e0f228835cff2737.tar.bz2 | |
hppa -z relro again
I misunderstood the hppa alias problem. File offsets of segments need
to be such that no page is mapped twice with different permissions.
(Which still seems to me like something the kernel could fix, but
anyhow, this is not so difficult to achieve in ld.)
PR 21000
bfd/
* elf-bfd.h (struct elf_backend_data): Add no_page_alias.
* elfxx-target.h (elf_backend_no_page_alias): Define.
(elfNN_bed): Init new field.
* elf.c (assign_file_positions_for_load_sections): If no_page_alias
ensure PT_LOAD segment starts on a new page.
* elf32-hppa.c (elf_backend_no_page_alias): Define.
ld/
* testsuite/ld-elf/loadaddr1.d: Adjust for hppa file offsets.
* testsuite/ld-elf/loadaddr2.d: Likewise.
* testsuite/ld-elf/loadaddr3a.d: Likewise.
* testsuite/ld-scripts/rgn-at5.d: Likewise.
Diffstat (limited to 'bfd/elf32-hppa.c')
| -rw-r--r-- | bfd/elf32-hppa.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/bfd/elf32-hppa.c b/bfd/elf32-hppa.c index e64ea9a..d5b911c 100644 --- a/bfd/elf32-hppa.c +++ b/bfd/elf32-hppa.c @@ -4646,6 +4646,7 @@ elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type) #define elf_backend_want_dynrelro 1 #define elf_backend_rela_normal 1 #define elf_backend_dtrel_excludes_plt 1 +#define elf_backend_no_page_alias 1 #define TARGET_BIG_SYM hppa_elf32_vec #define TARGET_BIG_NAME "elf32-hppa" |