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llvm-project/lld/test/ELF/dynamic-reloc-weak.s

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Handle dynamic relocs to weak undefined when possible. llvm-svn: 250311
2015-10-15 02:42:16 +08:00
// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
Fix some confusion about what can be preempted. For shared libraries we allow any weak undefined symbol to eventually be resolved, even if we never see a definition in another .so. This matches the behavior when handling other undefined symbols in a shared library. For executables, we require seeing a definition in a .so or resolve it to zero. This is also similar to how non weak symbols are handled. llvm-svn: 262017
2016-02-26 22:27:47 +08:00
// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/dynamic-reloc-weak.s -o %t2.o
Rename ld.lld2 to ld.lld since it is the default. llvm-svn: 253437
2015-11-18 14:11:01 +08:00
// RUN: ld.lld -shared %t2.o -o %t2.so
// RUN: ld.lld %t.o %t2.so -o %t
Handle dynamic relocs to weak undefined when possible. llvm-svn: 250311
2015-10-15 02:42:16 +08:00
// RUN: llvm-readobj -r %t | FileCheck %s
// REQUIRES: x86
.globl _start
_start:
.type sym1,@function
.weak sym1
.long sym1@gotpcrel
.type sym2,@function
.weak sym2
.long sym2@plt
.type sym3,@function
.weak sym3
.quad sym3
Fix some confusion about what can be preempted. For shared libraries we allow any weak undefined symbol to eventually be resolved, even if we never see a definition in another .so. This matches the behavior when handling other undefined symbols in a shared library. For executables, we require seeing a definition in a .so or resolve it to zero. This is also similar to how non weak symbols are handled. llvm-svn: 262017
2016-02-26 22:27:47 +08:00
.type sym4,@function
.weak sym4
.quad sym4
// Test that we produce dynamic relocation for every weak undefined symbol
// we found.
Handle dynamic relocs to weak undefined when possible. llvm-svn: 250311
2015-10-15 02:42:16 +08:00
// CHECK: Relocations [
// CHECK-NEXT: Section ({{.*}}) .rela.dyn {
// CHECK-NEXT: 0x{{.*}} R_X86_64_GLOB_DAT sym1 0x0
// CHECK-NEXT: }
[ELF2] - Lazy relocation support for x86_64. Target has supportsLazyRelocations() method which can switch lazy relocations on/off (currently all targets are OFF except x64 which is ON). So no any other targets are affected now. Differential Revision: http://reviews.llvm.org/D13856?id=37726 llvm-svn: 250808
2015-10-20 16:54:27 +08:00
// CHECK-NEXT: Section ({{.*}}) .rela.plt {
// CHECK-NEXT: 0x{{.*}} R_X86_64_JUMP_SLOT sym2 0x0
Fix some confusion about what can be preempted. For shared libraries we allow any weak undefined symbol to eventually be resolved, even if we never see a definition in another .so. This matches the behavior when handling other undefined symbols in a shared library. For executables, we require seeing a definition in a .so or resolve it to zero. This is also similar to how non weak symbols are handled. llvm-svn: 262017
2016-02-26 22:27:47 +08:00
// CHECK-NEXT: 0x{{.*}} R_X86_64_JUMP_SLOT sym3 0x0
[ELF2] - Lazy relocation support for x86_64. Target has supportsLazyRelocations() method which can switch lazy relocations on/off (currently all targets are OFF except x64 which is ON). So no any other targets are affected now. Differential Revision: http://reviews.llvm.org/D13856?id=37726 llvm-svn: 250808
2015-10-20 16:54:27 +08:00
// CHECK-NEXT: }
Add a newline at the end of the file. llvm-svn: 261964
2016-02-26 11:17:25 +08:00
// CHECK-NEXT: ]