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| author | Christophe Lyon <christophe.lyon@st.com> | 2018-03-20 10:55:29 +0100 |
|---|---|---|
| committer | Christophe Lyon <christophe.lyon@linaro.org> | 2018-04-25 20:57:02 +0000 |
| commit | 5c5a4843ec385a60954fbbc4bcf5b64763639bd3 (patch) | |
| tree | 0271d460bc3533d64c2bcc94b3e01925d7fbbe19 /include/elf/arm.h | |
| parent | 7801f98f84fefa495941c86e2a859ea8c6c37770 (diff) | |
| download | gdb-5c5a4843ec385a60954fbbc4bcf5b64763639bd3.zip gdb-5c5a4843ec385a60954fbbc4bcf5b64763639bd3.tar.gz gdb-5c5a4843ec385a60954fbbc4bcf5b64763639bd3.tar.bz2 | |
[ARM] Add TLS relocations for FDPIC.
Define and handle TLS relocations for FDPIC in BFD and gas.
In gas, the new relocations are rejected if the --fdpic option was not
specified.
We also define the __tdata_start symbol to mark the start of the
.tdata section. This allows FDPIC static binaries to find the start of
.tdata section, since phdr->p_vaddr of TLS segment is not a valid
value for FDPIC.
2018-04-25 Christophe Lyon <christophe.lyon@st.com>
Mickaël Guêné <mickael.guene@st.com>
bfd/:
* bfd-in2.h (BFD_RELOC_ARM_TLS_GD32_FDPIC)
(BFD_RELOC_ARM_TLS_LDM32_FDPIC, BFD_RELOC_ARM_TLS_IE32_FDPIC): New
relocations.
* elf32-arm.c (elf32_arm_howto_table_2): Add R_ARM_TLS_GD32_FDPIC,
R_ARM_TLS_LDM32_FDPIC, R_ARM_TLS_IE32_FDPIC relocations.
(elf32_arm_reloc_map): Add R_ARM_TLS_GD32_FDPIC,
R_ARM_TLS_LDM32_FDPIC, R_ARM_TLS_IE32_FDPIC.
(struct elf32_arm_link_hash_table): Update comment.
(elf32_arm_final_link_relocate): Handle TLS FDPIC relocations.
(IS_ARM_TLS_RELOC): Likewise.
(elf32_arm_check_relocs): Likewise.
(allocate_dynrelocs_for_symbol): Likewise.
(elf32_arm_size_dynamic_sections): Update comment.
* reloc.c: Add BFD_RELOC_ARM_TLS_GD32_FDPIC,
BFD_RELOC_ARM_TLS_LDM32_FDPIC, BFD_RELOC_ARM_TLS_IE32_FDPIC.
gas/
* config/tc-arm.c (reloc_names): Add TLSGD_FDPIC, TLSLDM_FDPIC,
GOTTPOFF_FDIC relocations.
(md_apply_fix): Handle the new TLS FDPIC relocations.
(tc_gen_reloc): Likewise.
(arm_fix_adjustable): Likewise.
include/
* elf/arm.h: Add R_ARM_TLS_GD32_FDPIC, R_ARM_TLS_LDM32_FDPIC,
R_ARM_TLS_IE32_FDPIC.
ld/
* scripttempl/elf.sc: Define __tdata_start for .tdata section.
Diffstat (limited to 'include/elf/arm.h')
| -rw-r--r-- | include/elf/arm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/elf/arm.h b/include/elf/arm.h index 158f7b1..fdae08a 100644 --- a/include/elf/arm.h +++ b/include/elf/arm.h @@ -244,6 +244,9 @@ START_RELOC_NUMBERS (elf_arm_reloc_type) RELOC_NUMBER (R_ARM_GOTOFFFUNCDESC, 162) RELOC_NUMBER (R_ARM_FUNCDESC, 163) RELOC_NUMBER (R_ARM_FUNCDESC_VALUE, 164) + RELOC_NUMBER (R_ARM_TLS_GD32_FDPIC, 165) + RELOC_NUMBER (R_ARM_TLS_LDM32_FDPIC, 166) + RELOC_NUMBER (R_ARM_TLS_IE32_FDPIC, 167) /* Extensions? R=read-only? */ RELOC_NUMBER (R_ARM_RXPC25, 249) |