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| author | Max Filippov <jcmvbkbc@gmail.com> | 2015-09-15 06:37:14 +0300 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2015-09-15 22:18:51 +0300 |
| commit | 92b3f0082674ecdb4dad89d722acd069aef0dafa (patch) | |
| tree | 23fdfc8a142cc6f373468c47359307fe89a3ac88 /bfd | |
| parent | 5382cfab6110741b8ba36965b30334c00d8f9409 (diff) | |
| download | gdb-92b3f0082674ecdb4dad89d722acd069aef0dafa.zip gdb-92b3f0082674ecdb4dad89d722acd069aef0dafa.tar.gz gdb-92b3f0082674ecdb4dad89d722acd069aef0dafa.tar.bz2 | |
xtensa: generate PLT entries for call0 ABI
2015-09-15 Max Filippov <jcmvbkbc@gmail.com>
bfd/
* elf32-xtensa.c (elf_xtensa_be_plt_entry)
(elf_xtensa_le_plt_entry): Emit 'entry' instruction only for
windowed ABI.
(elf_xtensa_create_plt_entry): Generate 'l32r' offsets and fix
up instructions according to ABI.
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 8 | ||||
| -rw-r--r-- | bfd/elf32-xtensa.c | 19 |
2 files changed, 20 insertions, 7 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 2c4a6e0..fb809a3 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,11 @@ +2015-09-15 Max Filippov <jcmvbkbc@gmail.com> + + * elf32-xtensa.c (elf_xtensa_be_plt_entry) + (elf_xtensa_le_plt_entry): Emit 'entry' instruction only for + windowed ABI. + (elf_xtensa_create_plt_entry): Generate 'l32r' offsets and fix + up instructions according to ABI. + 2015-09-14 Rich Felker <dalias@libc.org> * elf32-sh.c (sh_elf_relocate_section): Set EF_SH_PIC flag diff --git a/bfd/elf32-xtensa.c b/bfd/elf32-xtensa.c index 73538cd..ada3e5a 100644 --- a/bfd/elf32-xtensa.c +++ b/bfd/elf32-xtensa.c @@ -521,7 +521,9 @@ elf_xtensa_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, static const bfd_byte elf_xtensa_be_plt_entry[PLT_ENTRY_SIZE] = { +#if XSHAL_ABI == XTHAL_ABI_WINDOWED 0x6c, 0x10, 0x04, /* entry sp, 32 */ +#endif 0x18, 0x00, 0x00, /* l32r a8, [got entry for rtld's resolver] */ 0x1a, 0x00, 0x00, /* l32r a10, [got entry for rtld's link map] */ 0x1b, 0x00, 0x00, /* l32r a11, [literal for reloc index] */ @@ -531,7 +533,9 @@ static const bfd_byte elf_xtensa_be_plt_entry[PLT_ENTRY_SIZE] = static const bfd_byte elf_xtensa_le_plt_entry[PLT_ENTRY_SIZE] = { +#if XSHAL_ABI == XTHAL_ABI_WINDOWED 0x36, 0x41, 0x00, /* entry sp, 32 */ +#endif 0x81, 0x00, 0x00, /* l32r a8, [got entry for rtld's resolver] */ 0xa1, 0x00, 0x00, /* l32r a10, [got entry for rtld's link map] */ 0xb1, 0x00, 0x00, /* l32r a11, [literal for reloc index] */ @@ -2317,7 +2321,7 @@ elf_xtensa_create_plt_entry (struct bfd_link_info *info, { asection *splt, *sgotplt; bfd_vma plt_base, got_base; - bfd_vma code_offset, lit_offset; + bfd_vma code_offset, lit_offset, abi_offset; int chunk; chunk = reloc_index / PLT_ENTRIES_PER_CHUNK; @@ -2342,15 +2346,16 @@ elf_xtensa_create_plt_entry (struct bfd_link_info *info, ? elf_xtensa_be_plt_entry : elf_xtensa_le_plt_entry), PLT_ENTRY_SIZE); + abi_offset = XSHAL_ABI == XTHAL_ABI_WINDOWED ? 3 : 0; bfd_put_16 (output_bfd, l32r_offset (got_base + 0, - plt_base + code_offset + 3), - splt->contents + code_offset + 4); + plt_base + code_offset + abi_offset), + splt->contents + code_offset + abi_offset + 1); bfd_put_16 (output_bfd, l32r_offset (got_base + 4, - plt_base + code_offset + 6), - splt->contents + code_offset + 7); + plt_base + code_offset + abi_offset + 3), + splt->contents + code_offset + abi_offset + 4); bfd_put_16 (output_bfd, l32r_offset (got_base + lit_offset, - plt_base + code_offset + 9), - splt->contents + code_offset + 10); + plt_base + code_offset + abi_offset + 6), + splt->contents + code_offset + abi_offset + 7); return plt_base + code_offset; } |