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https://sourceware.org/git/binutils-gdb.git
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7f923b7fd2
Many ELF targets arrange to emit a number of section symbols in .dynsym for use by dynamic relocations. This happens before the dynamic relocations are output, and the need for those symbols determined. In most cases they are not needed. A proper analysis of the need for dynamic section symbols is target specific and tedious, so this patch just excludes them in the obvious case when no dynamic relocations are present. The patch also runs the new pr23161 and pr23162 tests on more targets. bfd/ * elf-bfd.h (struct elf_link_hash_table): Add "dynamic_relocs". * elflink.c (_bfd_elf_init_2_index_sections): Comment fix. (_bfd_elf_add_dynamic_entry): Set "dynamic_relocs". (_bfd_elf_link_renumber_dynsyms): Exclude all section symbols when "dynamic_relocs" is not set. * elfxx-mips.c (count_section_dynsyms): Likewise. ld/ * testsuite/ld-elf/readelf.exp: Delete DUMP and selection of variant ver_def.vd. * testsuite/ld-elf/ver_def-tic6x.vd: Delete. * testsuite/ld-elf/shared.exp: Run most pr23161 and pr23162 tests for linux, nacl and gnu targets. * testsuite/ld-mips-elf/mips-elf.exp: Set base_syms to 1. * testsuite/ld-elf/pr23161a.rd: Don't check reloc type. Allow any order of __bss_start, _edata and _end. * testsuite/ld-elf/pr23161b.rd: Don't check plt and dyn relocs. Allow and order of __bss_start, _edata and _end. * testsuite/ld-elf/pr23162.rd: Fail if __bss_start, _edata or _end relocs are present rather than testing for no relocations. * testsuite/ld-aarch64/gc-plt-relocs.d, * testsuite/ld-aarch64/ifunc-1-local.d, * testsuite/ld-aarch64/ifunc-1.d, * testsuite/ld-aarch64/ifunc-2-local.d, * testsuite/ld-aarch64/ifunc-2.d, * testsuite/ld-aarch64/ifunc-21.d, * testsuite/ld-aarch64/ifunc-3a.d, * testsuite/ld-arm/farcall-mixed-lib-v4t.d, * testsuite/ld-arm/farcall-mixed-lib.d, * testsuite/ld-arm/gc-hidden-1.d, * testsuite/ld-arm/tls-gdesc-got.d, * testsuite/ld-arm/tls-lib-loc.d, * testsuite/ld-arm/tls-longplt-lib.d, * testsuite/ld-arm/tls-thumb1.d, * testsuite/ld-cris/libdso-10.d, * testsuite/ld-cris/libdso-11.d, * testsuite/ld-cris/libdso-13b.d, * testsuite/ld-cris/libdso-14.d, * testsuite/ld-cris/libdso-15.d, * testsuite/ld-cris/pic-gc-72.d, * testsuite/ld-cris/pic-gc-73.d, * testsuite/ld-cris/tls-gc-71.d, * testsuite/ld-mips-elf/mips16-pic-4a.nd, * testsuite/ld-mips-elf/pic-and-nonpic-3a.dd, * testsuite/ld-mips-elf/pie-n32.d, * testsuite/ld-mips-elf/pie-n64.d, * testsuite/ld-mips-elf/pie-o32.d: Update for removed dynamic section symbols.
120 lines
3.4 KiB
Makefile
120 lines
3.4 KiB
Makefile
tmpdir/farcall-mixed-lib.so: file format elf32-(little|big)arm
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architecture: arm.*, flags 0x00000150:
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HAS_SYMS, DYNAMIC, D_PAGED
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start address 0x.*
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Disassembly of section .plt:
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.* <.plt>:
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.*: e52de004 push {lr} ; \(str lr, \[sp, #-4\]!\)
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.*: e59fe004 ldr lr, \[pc, #4\] ; .* <.*>
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.*: e08fe00e add lr, pc, lr
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.*: e5bef008 ldr pc, \[lr, #8\]!
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.*: .* .word .*
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.* <app_func@plt>:
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.*: 4778 bx pc
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.*: 46c0 nop ; \(mov r8, r8\)
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.*: e28fc6.* add ip, pc, #.*
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.*: e28cca.* add ip, ip, #.* ; 0x.*
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.*: e5bcf.* ldr pc, \[ip, #.*\]! ; .*
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.* <app_func_weak@plt>:
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.*: 4778 bx pc
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.*: 46c0 nop ; \(mov r8, r8\)
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.*: e28fc6.* add ip, pc, #.*
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.*: e28cca.* add ip, ip, #.* ; 0x.*
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.*: e5bcf.* ldr pc, \[ip, #.*\]! ; 0x.*
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.* <lib_func3@plt>:
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.*: 4778 bx pc
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.*: 46c0 nop ; \(mov r8, r8\)
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.*: e28fc6.* add ip, pc, #.*
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.*: e28cca.* add ip, ip, #.* ; 0x.*
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.*: e5bcf.* ldr pc, \[ip, #.*\]! ; 0x.*
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.* <lib_func4@plt>:
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.*: 4778 bx pc
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.*: 46c0 nop ; \(mov r8, r8\)
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.*: e28fc6.* add ip, pc, #.*
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.*: e28cca.* add ip, ip, #.* ; 0x.*
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.*: e5bcf.* ldr pc, \[ip, #.*\]! ; 0x.*
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Disassembly of section .text:
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.* <lib_func1>:
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.*: e1a0c00d mov ip, sp
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.*: e92dd800 push {fp, ip, lr, pc}
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.*: ebffff.. bl .* <app_func@plt\+0x.*>
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.*: ebffff.. bl .* <app_func_weak@plt\+0x.*>
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.*: ebffff.. bl .* <lib_func3@plt\+0x.*>
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.*: ebffff.. bl .* <lib_func4@plt\+0x.*>
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.*: e89d6800 ldm sp, {fp, sp, lr}
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.*: e12fff1e bx lr
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...
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.* <__real_lib_func2>:
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.*: f000 f8.. bl .* <__app_func_from_thumb>
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.*: f000 f8.. bl .* <__app_func_weak_from_thumb>
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.*: f000 f8.. bl .* <__lib_func3_from_thumb>
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.*: f000 f8.. bl .* <__lib_func4_from_thumb>
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.*: 4770 bx lr
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#...
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.* <__app_func_from_thumb>:
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.*: 4778 bx pc
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.*: 46c0 nop ; \(mov r8, r8\)
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.*: e59fc000 ldr ip, \[pc\] ; .* <__app_func_from_thumb\+0xc>
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.*: e08cf00f add pc, ip, pc
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.*: feffff.. .word 0xfeffff..
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.* <__lib_func4_from_thumb>:
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.*: 4778 bx pc
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.*: 46c0 nop ; \(mov r8, r8\)
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.*: e59fc000 ldr ip, \[pc\] ; .* <__lib_func4_from_thumb\+0xc>
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.*: e08cf00f add pc, ip, pc
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.*: feffff.. .word 0xfeffff..
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.* <__app_func_weak_from_thumb>:
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.*: 4778 bx pc
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.*: 46c0 nop ; \(mov r8, r8\)
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.*: e59fc000 ldr ip, \[pc\] ; .* <__app_func_weak_from_thumb\+0xc>
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.*: e08cf00f add pc, ip, pc
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.*: feffff.. .word 0xfeffff..
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.* <__lib_func3_from_thumb>:
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.*: 4778 bx pc
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.*: 46c0 nop ; \(mov r8, r8\)
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.*: e59fc000 ldr ip, \[pc\] ; .* <__lib_func3_from_thumb\+0xc>
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.*: e08cf00f add pc, ip, pc
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.*: feffff.. .word 0xfeffff..
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...
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.* <__real_lib_func3>:
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.*: f000 f80(e|6) bl .* <__app_func_from_thumb>
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.*: f000 f80(4|c) bl .* <__app_func_weak_from_thumb>
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.*: 4770 bx lr
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#...
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.* <__app_func_weak_from_thumb>:
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.*: 4778 bx pc
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.*: 46c0 nop ; \(mov r8, r8\)
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.*: e59fc000 ldr ip, \[pc\] ; .* <__app_func_weak_from_thumb\+0xc>
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.*: e08cf00f add pc, ip, pc
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.*: fdffff34 .word 0xfdffff34
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.* <__app_func_from_thumb>:
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.*: 4778 bx pc
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.*: 46c0 nop ; \(mov r8, r8\)
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.*: e59fc000 ldr ip, \[pc\] ; .* <__app_func_from_thumb\+0xc>
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.*: e08cf00f add pc, ip, pc
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.*: fdffff14 .word 0xfdffff14
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.* <lib_func3>:
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.*: e59fc004 ldr ip, \[pc, #4\] ; .* <lib_func3\+0xc>
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.*: e08cc00f add ip, ip, pc
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.*: e12fff1c bx ip
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.*: ffffffc5 .word 0xffffffc5
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.* <lib_func2>:
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.*: e59fc004 ldr ip, \[pc, #4\] ; .* <lib_func2\+0xc>
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.*: e08cc00f add ip, ip, pc
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.*: e12fff1c bx ip
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.*: feffff55 .word 0xfeffff55
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