H.J. Lu 04ebc307f9 Skip PLT for function pointer initialization ... We use its PLT entry to initialize function pointer at run-time. If there is no other usage for the PLT entry, we can generate run-time function pointer relocations in read-write section, which can be resolved by dynamic linker, to initialize function pointers. It avoids the extra indirect branch overhead in PLT. bfd/ PR ld/18900 * elf32-i386.c (elf_i386_link_hash_entry): Add func_pointer_refcount. (elf_i386_link_hash_newfunc): Clear func_pointer_refcount. (elf_i386_get_local_sym_hash): Likewise. (elf_i386_copy_indirect_symbol): Also copy func_pointer_refcount. (elf_i386_check_relocs): Increment func_pointer_refcount. (elf_i386_gc_sweep_hook): Decrement func_pointer_refcount. (elf_i386_allocate_dynrelocs): Don't create the PLT entry if there are only function pointer relocations which can be resolved at run-time. Keep dynanamic relocations for run-time function pointer initialization. (elf_i386_relocate_section): Copy dynamic function pointer relocations. * elf64-x86-64.c (elf_x86_64_link_hash_entry): Add func_pointer_refcount. (elf_x86_64_link_hash_newfunc): Clear func_pointer_refcount. (elf_x86_64_get_local_sym_hash): Likewise. (elf_x86_64_copy_indirect_symbol): Also copy func_pointer_refcount. (elf_x86_64_check_relocs): Increment func_pointer_refcount. (elf_x86_64_gc_sweep_hook): Decrement func_pointer_refcount. (elf_x86_64_allocate_dynrelocs): Don't create the PLT entry if there are only function pointer relocations which can be resolved at run-time. Keep dynanamic relocations for run-time function pointer initialization. (elf_x86_64_relocate_section): Copy dynamic function pointer relocations. ld/testsuite/ PR ld/18900 * ld-i386/i386.exp: Run tests for PR ld/18900. * ld-x86-64/x86-64.exp: Likewise. * ld-i386/pr18900.out: New file. * ld-i386/pr18900a.c: Likewise. * ld-i386/pr18900a.c: Likewise. * ld-i386/pr18900a.rd: Likewise. * ld-i386/pr18900b.c: Likewise. * ld-i386/pr18900b.rd: Likewise. * ld-i386/pr18900c.c: Likewise. * ld-x86-64/pr18900.out: Likewise. * ld-x86-64/pr18900a.c: Likewise. * ld-x86-64/pr18900a.rd: Likewise. * ld-x86-64/pr18900b.c: Likewise. * ld-x86-64/pr18900b.rd: Likewise. * ld-x86-64/pr18900c.c: Likewise. * ld-x86-64/mpx3.dd: Updated.		2015-09-01 05:06:33 -07:00
..
abs-iamcu.d	Add Intel MCU support to ld	2015-05-11 11:29:03 -07:00
abs.d	…
abs.s	…
alloc.d	…
alloc.s	…
alloc.t	…
combreloc.d	…
combreloc.s	…
compressed1.d	Use nm/readelf with "failif"	2015-02-19 04:45:27 -08:00
compressed1.s	…
copyreloc-lib.c	i386: Allow copy relocs for building PIE	2015-04-22 05:30:01 -07:00
copyreloc-main.S	i386: Allow copy relocs for building PIE	2015-04-22 05:30:01 -07:00
copyreloc-main.out	i386: Allow copy relocs for building PIE	2015-04-22 05:30:01 -07:00
copyreloc-main1.rd	i386: Allow copy relocs for building PIE	2015-04-22 05:30:01 -07:00
copyreloc-main2.rd	i386: Allow copy relocs for building PIE	2015-04-22 05:30:01 -07:00
discarded1.d	…
discarded1.s	…
discarded1.t	…
dummy.c	i386: Allow copy relocs for building PIE	2015-04-22 05:30:01 -07:00
dummy.s	Add Intel MCU support to ld	2015-05-11 11:29:03 -07:00
emit-relocs-nacl.rd	…
emit-relocs.rd	…
emit-relocs.s	…
export-class.exp	ChangeLog rotatation and copyright year update	2015-01-02 00:53:45 +10:30
foo.s	Add Intel MCU support to ld	2015-05-11 11:29:03 -07:00
hidden1.d	…
hidden1.s	…
hidden2.d	…
hidden2.s	…
hidden3.d	…
hidden3.s	…
i386-export-class.rd	* ld-elf/export-class.sd: New test.	2012-08-28 20:29:19 +00:00
i386-export-class.xd	* ld-elf/export-class.sd: New test.	2012-08-28 20:29:19 +00:00
i386.exp	Skip PLT for function pointer initialization	2015-09-01 05:06:33 -07:00
iamcu-1.d	Add Intel MCU support to ld	2015-05-11 11:29:03 -07:00
iamcu-2.d	Add Intel MCU support to ld	2015-05-11 11:29:03 -07:00
iamcu-3.d	Add Intel MCU support to ld	2015-05-11 11:29:03 -07:00
iamcu-4.d	Default e_machine to EM_IAMCU for i?86-*-elfiamcu	2015-05-11 12:06:33 -07:00
lea1.s	Convert mov to lea for loading local function address	2012-08-31 04:26:17 +00:00
lea1a.d	Convert mov to lea for loading local function address	2012-08-31 04:26:17 +00:00
lea1b.d	Convert mov to lea for loading local function address	2012-08-31 04:26:17 +00:00
lea1c.d	Convert mov to lea for loading local function address	2012-08-31 04:26:17 +00:00
lea1d.d	Convert mov to lea in size_dynamic_sections	2012-08-31 20:41:41 +00:00
lea1e.d	Convert mov to lea in size_dynamic_sections	2012-08-31 20:41:41 +00:00
lea1f.d	Convert mov to lea in size_dynamic_sections	2012-08-31 20:41:41 +00:00
mov1.s	Don't optimize relocation against _DYNAMIC	2012-09-01 02:50:14 +00:00
mov1a.d	Don't optimize relocation against _DYNAMIC	2012-09-01 02:50:14 +00:00
mov1b.d	Don't optimize relocation against _DYNAMIC	2012-09-01 02:50:14 +00:00
nogot1.d	…
nogot1.s	…
nogot2.d	…
nogot2.s	…
pcrel8.d	…
pcrel8.s	…
pcrel16.d	…
pcrel16.s	…
pcrel16abs.d	…
pcrel16abs.s	…
plt-lib.c	Add function and function pointer tests for i386	2014-11-21 08:45:02 -08:00
plt-main.out	Add function and function pointer tests for i386	2014-11-21 08:45:02 -08:00
plt-main.rd	Optimize out i386/x86-64 JUMP_SLOT relocation	2014-11-25 05:05:39 -08:00
plt-main1.c	Add function and function pointer tests for i386	2014-11-21 08:45:02 -08:00
plt-main1.rd	Add function and function pointer tests for i386	2014-11-21 08:45:02 -08:00
plt-main2.c	Add function and function pointer tests for i386	2014-11-21 08:45:02 -08:00
plt-main2.rd	Add function and function pointer tests for i386	2014-11-21 08:45:02 -08:00
plt-main3.c	Add function and function pointer tests for i386	2014-11-21 08:45:02 -08:00
plt-main3.rd	Add function and function pointer tests for i386	2014-11-21 08:45:02 -08:00
plt-main4.c	Add function and function pointer tests for i386	2014-11-21 08:45:02 -08:00
plt-main4.rd	Add function and function pointer tests for i386	2014-11-21 08:45:02 -08:00
plt-main5.c	Add function and function pointer tests for i386	2014-11-21 08:45:02 -08:00
plt-nacl.pd	…
plt-pic-nacl.pd	…
plt-pic.pd	…
plt-pic.s	…
plt.pd	…
plt.s	…
pltgot-1.d	Keep .plt section and DT_PLTGOT for prelink	2015-06-24 13:47:37 -07:00
pltgot-1.s	Allocate the first .plt entry space only if needed	2015-05-12 13:11:48 -07:00
pltgot-2.d	Keep .plt section and DT_PLTGOT for prelink	2015-06-24 13:47:37 -07:00
pltlib.s	…
pr12570a.d	…
pr12570a.s	…
pr12570b.d	…
pr12570b.s	…
pr12627.d	…
pr12627.s	…
pr12627.t	…
pr12718.d	Don't align text/data/bss sections for ELF	2013-05-31 17:27:28 +00:00
pr12718.s	…
pr12921.d	bfd/	2012-06-06 10:50:18 +00:00
pr12921.s	…
pr13302.d	…
pr13302.s	…
pr14215.d	Don't hardcode .got.plt into DATA_SEGMENT_RELRO_END evaluation	2012-06-11 13:23:51 +00:00
pr14215.s	Don't hardcode .got.plt into DATA_SEGMENT_RELRO_END evaluation	2012-06-11 13:23:51 +00:00
pr17057.d	Update elf_i386_compute_jump_table_size	2014-07-15 13:09:55 -07:00
pr17057.s	Update elf_i386_compute_jump_table_size	2014-07-15 13:09:55 -07:00
pr17306a.s	Use bfd_is_abs_section to check discarded input section	2014-08-27 07:59:48 -07:00
pr17306b.s	Use bfd_is_abs_section to check discarded input section	2014-08-27 07:59:48 -07:00
pr17689.out	i386: Allow copy relocs for building PIE	2015-04-22 05:30:01 -07:00
pr17689.rd	i386: Allow copy relocs for building PIE	2015-04-22 05:30:01 -07:00
pr17689a.c	i386: Allow copy relocs for building PIE	2015-04-22 05:30:01 -07:00
pr17689a.t	i386: Allow copy relocs for building PIE	2015-04-22 05:30:01 -07:00
pr17689b.S	i386: Allow copy relocs for building PIE	2015-04-22 05:30:01 -07:00
pr17689now.rd	Don't generate PLT relocations for now binding	2015-05-16 07:00:55 -07:00
pr17689ver.rd	i386: Allow copy relocs for building PIE	2015-04-22 05:30:01 -07:00
pr17709-nacl.rd	Add extern_protected_data and set it for x86	2015-04-10 11:06:34 -07:00
pr17709.rd	Add extern_protected_data and set it for x86	2015-04-10 11:06:34 -07:00
pr17709a.s	Add extern_protected_data and set it for x86	2015-04-10 11:06:34 -07:00
pr17709b.s	Add extern_protected_data and set it for x86	2015-04-10 11:06:34 -07:00
pr17827.rd	i386: Allow copy relocs for building PIE	2015-04-22 05:30:01 -07:00
pr17935-1.d	Issue relocation in RO section warning for -z text	2015-02-07 05:28:06 -08:00
pr17935-1.s	Issue relocation in RO section warning for -z text	2015-02-07 05:28:06 -08:00
pr17935-2.d	Issue relocation in RO section warning for -z text	2015-02-07 05:28:06 -08:00
pr17935-2.s	Issue relocation in RO section warning for -z text	2015-02-07 05:28:06 -08:00
pr18801.d	Issue an error for read-only segment with dynamic IFUNC relocations	2015-08-13 04:31:38 -07:00
pr18801.s	Issue an error for read-only segment with dynamic IFUNC relocations	2015-08-13 04:31:38 -07:00
pr18815.d	Set EI_OSABI to ELFOSABI_GNU for local IFUNC symbols	2015-08-12 13:47:41 -07:00
pr18815.s	Set EI_OSABI to ELFOSABI_GNU for local IFUNC symbols	2015-08-12 13:47:41 -07:00
pr18900.out	Skip PLT for function pointer initialization	2015-09-01 05:06:33 -07:00
pr18900a.c	Skip PLT for function pointer initialization	2015-09-01 05:06:33 -07:00
pr18900a.rd	Skip PLT for function pointer initialization	2015-09-01 05:06:33 -07:00
pr18900b.c	Skip PLT for function pointer initialization	2015-09-01 05:06:33 -07:00
pr18900b.rd	Skip PLT for function pointer initialization	2015-09-01 05:06:33 -07:00
pr18900c.c	Skip PLT for function pointer initialization	2015-09-01 05:06:33 -07:00
protected1.d	…
protected1.s	…
protected2.d	…
protected2.s	…
protected3.d	Add extern_protected_data and set it for x86	2015-04-10 11:06:34 -07:00
protected3.s	Add extern_protected_data and set it for x86	2015-04-10 11:06:34 -07:00
protected4.d	…
protected4.s	…
protected5.d	…
protected5.s	…
protected6.s	Check GOTOFF reloc against protected data on x86	2015-04-10 14:02:23 -07:00
protected6a.d	Replace SYMBOLIC_BIND with SYMBOL_REFERENCES_LOCAL	2015-04-11 07:56:48 -07:00
protected6b.d	Add -z noextern-protected-data to ld for ELF/x86	2015-04-14 04:13:11 -07:00
reloc.d	…
reloc.s	…
start.s	Add Intel MCU support to ld	2015-05-11 11:29:03 -07:00
tlsbin-nacl.rd	Properly place the NULL STT_FILE symbol	2015-02-16 04:54:45 -08:00
tlsbin.dd	…
tlsbin.rd	Properly place the NULL STT_FILE symbol	2015-02-16 04:54:45 -08:00
tlsbin.s	…
tlsbin.sd	…
tlsbin.td	…
tlsbindesc-nacl.rd	Properly place the NULL STT_FILE symbol	2015-02-16 04:54:45 -08:00
tlsbindesc.dd	Don't align text/data/bss sections for ELF	2013-05-31 17:27:28 +00:00
tlsbindesc.rd	Properly place the NULL STT_FILE symbol	2015-02-16 04:54:45 -08:00
tlsbindesc.s	…
tlsbindesc.sd	…
tlsbindesc.td	…
tlsbinpic.s	…
tlsdesc-nacl.rd	Properly place the NULL STT_FILE symbol revistited	2015-02-18 00:31:52 +10:30
tlsdesc.dd	…
tlsdesc.rd	Properly place the NULL STT_FILE symbol revistited	2015-02-18 00:31:52 +10:30
tlsdesc.s	…
tlsdesc.sd	…
tlsdesc.td	…
tlsg.s	…
tlsg.sd	…
tlsgd1.dd	…
tlsgd1.s	…
tlsgd2.d	…
tlsgd2.s	…
tlsgdesc-nacl.rd	ld/testsuite/	2012-07-02 18:20:31 +00:00
tlsgdesc.dd	…
tlsgdesc.rd	ld/	2012-06-15 15:13:41 +00:00
tlsgdesc.s	…
tlsie1.dd	…
tlsie1.s	…
tlsie2.d	…
tlsie2.s	…
tlsie3.d	…
tlsie3.s	…
tlsie4.d	…
tlsie4.s	…
tlsie5.d	…
tlsie5.s	…
tlsindntpoff.dd	…
tlsindntpoff.s	…
tlsld1.dd	…
tlsld1.s	…
tlslib.s	…
tlsnopic-nacl.rd	Properly place the NULL STT_FILE symbol revistited	2015-02-18 00:31:52 +10:30
tlsnopic.dd	Don't align text/data/bss sections for ELF	2013-05-31 17:27:28 +00:00
tlsnopic.rd	Properly place the NULL STT_FILE symbol revistited	2015-02-18 00:31:52 +10:30
tlsnopic.sd	…
tlsnopic1.s	…
tlsnopic2.s	…
tlspic-nacl.rd	Properly place the NULL STT_FILE symbol revistited	2015-02-18 00:31:52 +10:30
tlspic.dd	Don't align text/data/bss sections for ELF	2013-05-31 17:27:28 +00:00
tlspic.rd	Properly place the NULL STT_FILE symbol revistited	2015-02-18 00:31:52 +10:30
tlspic.sd	…
tlspic.td	…
tlspic1.s	…
tlspic2.s	…
tlspie1.d	…
tlspie1.s	…
tlspie2.d	…
tlspie2.s	…
vxworks1-lib.dd	…
vxworks1-lib.nd	…
vxworks1-lib.rd	…
vxworks1-lib.s	…
vxworks1-lib.td	…
vxworks1-static.d	…
vxworks1.dd	…
vxworks1.ld	…
vxworks1.rd	…
vxworks1.s	…
vxworks2-static.sd	…
vxworks2.s	…
vxworks2.sd	…
warn1.d	…
warn1.s	…
zero.s	…