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binutils-gdb/ld/testsuite/ld-x86-64/protected3.s

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bfd/ 2008-03-16 H.J. Lu <hongjiu.lu@intel.com> PR ld/5789 PR ld/5943 * elf32-i386.c (elf_i386_relocate_section): Issue an error for R_386_GOTOFF relocaton against undefined hidden/internal symbols when building a shared object. * elf64-x86-64.c (elf64_x86_64_relocate_section): Issue an error for R_X86_64_PC8/R_X86_64_PC16/R_X86_64_PC32 relocaton against undefined hidden/internal symbols when building a shared object. (elf64_x86_64_finish_dynamic_symbol): Return FALSE when symbol is referenced locally, but isn't defined in a regular file. ld/testsuite/ 2008-03-16 H.J. Lu <hongjiu.lu@intel.com> PR ld/5789 PR ld/5943 * ld-i386/hidden1.d: New. * ld-i386/hidden1.s: Likewise. * ld-i386/hidden2.d: Likewise. * ld-i386/hidden2.s: Likewise. * ld-i386/hidden3.d: Likewise. * ld-i386/hidden4.s: Likewise. * ld-i386/protected1.d: Likewise. * ld-i386/protected1.s: Likewise. * ld-i386/protected2.d: Likewise. * ld-i386/protected2.s: Likewise. * ld-i386/protected3.d: Likewise. * ld-i386/protected3.s: Likewise. * ld-x86-64/hidden1.d: Likewise. * ld-x86-64/hidden1.s: Likewise. * ld-x86-64/hidden2.d: Likewise. * ld-x86-64/hidden2.s: Likewise. * ld-x86-64/hidden3.d: Likewise. * ld-x86-64/hidden3.s: Likewise. * ld-x86-64/protected1.d: Likewise. * ld-x86-64/protected1.s: Likewise. * ld-x86-64/protected2.d: Likewise. * ld-x86-64/protected2.s: Likewise. * ld-x86-64/protected3.d: Likewise. * ld-x86-64/protected3.s: Likewise. * ld-i386/i386.exp: Run hidden1, hidden2, hidden3, protected1, protected2 and protected3. * ld-x86-64/x86-64.exp: Likewise.
2008-03-17 06:26:23 +08:00
.protected foo
.globl foo
.data
.align 4
.type foo, @object
.size foo, 4
foo:
.long 1
.text
.globl bar
.type bar, @function
bar:
Add extern_protected_data and set it for x86 Re-apply: commit ca3fe95e469b9daec153caa2c90665f5daaec2b5 With copy relocation, address of protected data defined in the shared library may be external. This patch adds extern_protected_data and changes _bfd_elf_symbol_refs_local_p to return false for protected data if extern_protected_data is true. This patch will break building shared libraries with protected data symbols using GCCs older than GCC 5 without the bug fix for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248 GCC backport request should be made in the GCC bug report above. To get correct run-time behavior on Linux, glibc 2.22 or above are required, which have the bug fix for https://sourceware.org/bugzilla/show_bug.cgi?id=17711 Backports for glibc 2.21, 2.20, 2.19 and 2.18 are on hjl/pr17711/2.21, hjl/pr17711/2.20, hjl/pr17711/2.19 and hjl/pr17711/2.18 branches, respectively, at https://sourceware.org/git/?p=glibc.git;a=summary bfd/ PR ld/pr15228 PR ld/pr17709 * elf-bfd.h (elf_backend_data): Add extern_protected_data. * elf32-i386.c (elf_backend_extern_protected_data): New. Defined to 1. * elf64-x86-64.c (elf_backend_extern_protected_data): Likewise. * elflink.c (_bfd_elf_adjust_dynamic_copy): Don't error on copy relocs against protected symbols if extern_protected_data is true. (_bfd_elf_symbol_refs_local_p): Don't return true on protected non-function symbols if extern_protected_data is true. * elfxx-target.h (elf_backend_extern_protected_data): New. Default to 0. (elfNN_bed): Initialize extern_protected_data with elf_backend_extern_protected_data. ld/testsuite/ PR ld/pr15228 PR ld/pr17709 * ld-i386/i386.exp (i386tests): Add a test for PR ld/17709. * ld-i386/pr17709-nacl.rd: New file. * ld-i386/pr17709.rd: Likewise. * ld-i386/pr17709a.s: Likewise. * ld-i386/pr17709b.s: Likewise. * ld-i386/protected3.d: Updated. * ld-i386/protected3.s: Likewise. * ld-x86-64/pr17709-nacl.rd: New file. * ld-x86-64/pr17709.rd: Likewise. * ld-x86-64/pr17709a.s: Likewise. * ld-x86-64/pr17709b.s: Likewise. * ld-x86-64/protected3.d: Updated. * ld-x86-64/protected3.s: Likewise. * ld-x86-64/x86-64.exp (x86_64tests): Add a test for PR ld/17709.
2015-03-05 22:34:39 +08:00
movq foo@GOTPCREL(%rip), %rax
movl (%rax), %eax
bfd/ 2008-03-16 H.J. Lu <hongjiu.lu@intel.com> PR ld/5789 PR ld/5943 * elf32-i386.c (elf_i386_relocate_section): Issue an error for R_386_GOTOFF relocaton against undefined hidden/internal symbols when building a shared object. * elf64-x86-64.c (elf64_x86_64_relocate_section): Issue an error for R_X86_64_PC8/R_X86_64_PC16/R_X86_64_PC32 relocaton against undefined hidden/internal symbols when building a shared object. (elf64_x86_64_finish_dynamic_symbol): Return FALSE when symbol is referenced locally, but isn't defined in a regular file. ld/testsuite/ 2008-03-16 H.J. Lu <hongjiu.lu@intel.com> PR ld/5789 PR ld/5943 * ld-i386/hidden1.d: New. * ld-i386/hidden1.s: Likewise. * ld-i386/hidden2.d: Likewise. * ld-i386/hidden2.s: Likewise. * ld-i386/hidden3.d: Likewise. * ld-i386/hidden4.s: Likewise. * ld-i386/protected1.d: Likewise. * ld-i386/protected1.s: Likewise. * ld-i386/protected2.d: Likewise. * ld-i386/protected2.s: Likewise. * ld-i386/protected3.d: Likewise. * ld-i386/protected3.s: Likewise. * ld-x86-64/hidden1.d: Likewise. * ld-x86-64/hidden1.s: Likewise. * ld-x86-64/hidden2.d: Likewise. * ld-x86-64/hidden2.s: Likewise. * ld-x86-64/hidden3.d: Likewise. * ld-x86-64/hidden3.s: Likewise. * ld-x86-64/protected1.d: Likewise. * ld-x86-64/protected1.s: Likewise. * ld-x86-64/protected2.d: Likewise. * ld-x86-64/protected2.s: Likewise. * ld-x86-64/protected3.d: Likewise. * ld-x86-64/protected3.s: Likewise. * ld-i386/i386.exp: Run hidden1, hidden2, hidden3, protected1, protected2 and protected3. * ld-x86-64/x86-64.exp: Likewise.
2008-03-17 06:26:23 +08:00
ret
.size bar, .-bar
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