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[ARM] Implement FDPIC relocations.

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This is the main BFD patch, that enables the linker to actually handle
the FDPIC relocations.

2018-04-25  Christophe Lyon  <christophe.lyon@st.com>
	Mickaël Guêné  <mickael.guene@st.com>

	bfd/
	* elf32-arm.c (struct fdpic_local): New.
	(elf_arm_obj_tdata): Add local_fdpic_cnts field.
	(elf32_arm_local_fdpic_cnts): New.
	(struct fdpic_global): New.
	(elf32_arm_link_hash_entry): Add fdpic_cnts field.
	(elf32_arm_link_hash_table): Add srofixup field.
	(arm_elf_add_rofixup): New.
	(arm_elf_fill_funcdesc): New.
	(elf32_arm_link_hash_newfunc): Handle fdpic_cnts.
	(elf32_arm_allocate_local_sym_info): Likewise.
	(create_got_section): Create .rofixup section.
	(elf32_arm_copy_indirect_symbol): Handle fdpic_cnts.
	(bfd_elf32_arm_set_target_params): Handle FDPIC.
	(elf32_arm_final_link_relocate): Likewise.
	(elf32_arm_check_relocs): Likewise.
	(allocate_dynrelocs_for_symbol): Likewise.
	(elf32_arm_size_dynamic_sections): Likewise.
	(elf32_arm_finish_dynamic_sections): Likewise.
	(elf32_arm_output_arch_local_syms): Likewise.
	(elf32_arm_fdpic_omit_section_dynsym): New.

	ld/
	* emulparams/armelf_linux_fdpiceabi.sh: Add .rofixup section.
This commit is contained in:
Christophe Lyon 2018-03-20 10:55:09 +01:00 committed by Christophe Lyon
parent 188fd7aea6
commit e8b09b8710
4 changed files with 731 additions and 31 deletions
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24
bfd/ChangeLog
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@ -1,3 +1,27 @@
2018-04-25 Christophe Lyon <christophe.lyon@st.com>
Mickaël Guêné <mickael.guene@st.com>
* elf32-arm.c (struct fdpic_local): New.
(elf_arm_obj_tdata): Add local_fdpic_cnts field.
(elf32_arm_local_fdpic_cnts): New.
(struct fdpic_global): New.
(elf32_arm_link_hash_entry): Add fdpic_cnts field.
(elf32_arm_link_hash_table): Add srofixup field.
(arm_elf_add_rofixup): New.
(arm_elf_fill_funcdesc): New.
(elf32_arm_link_hash_newfunc): Handle fdpic_cnts.
(elf32_arm_allocate_local_sym_info): Likewise.
(create_got_section): Create .rofixup section.
(elf32_arm_copy_indirect_symbol): Handle fdpic_cnts.
(bfd_elf32_arm_set_target_params): Handle FDPIC.
(elf32_arm_final_link_relocate): Likewise.
(elf32_arm_check_relocs): Likewise.
(allocate_dynrelocs_for_symbol): Likewise.
(elf32_arm_size_dynamic_sections): Likewise.
(elf32_arm_finish_dynamic_sections): Likewise.
(elf32_arm_output_arch_local_syms): Likewise.
(elf32_arm_fdpic_omit_section_dynsym): New.
2018-04-25 Christophe Lyon <christophe.lyon@st.com>
Mickaël Guêné <mickael.guene@st.com>

725
bfd/elf32-arm.c
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File diff suppressed because it is too large Load Diff

5
ld/ChangeLog
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@ -1,3 +1,8 @@
2018-04-25 Christophe Lyon <christophe.lyon@st.com>
Mickaël Guêné <mickael.guene@st.com>
* emulparams/armelf_linux_fdpiceabi.sh: Add .rofixup section.
2018-04-25 Christophe Lyon <christophe.lyon@st.com>
Mickaël Guêné <mickael.guene@st.com>

8
ld/emulparams/armelf_linux_fdpiceabi.sh
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@ -9,5 +9,9 @@ OTHER_READONLY_SECTIONS="
.ARM.extab ${RELOCATING-0} : { *(.ARM.extab${RELOCATING+* .gnu.linkonce.armextab.*}) }
${RELOCATING+ PROVIDE_HIDDEN (__exidx_start = .); }
.ARM.exidx ${RELOCATING-0} : { *(.ARM.exidx${RELOCATING+* .gnu.linkonce.armexidx.*}) }
${RELOCATING+ PROVIDE_HIDDEN (__exidx_end = .); }"
${RELOCATING+ PROVIDE_HIDDEN (__exidx_end = .); }
.rofixup : {
${RELOCATING+__ROFIXUP_LIST__ = .;}
*(.rofixup)
${RELOCATING+__ROFIXUP_END__ = .;}
}"