| # REQUIRES: x86 |
| ## Verify that we can correctly wrap symbols produced only during LTO codegen |
| ## and unreferenced before then. |
| |
| # RUN: rm -rf %t && split-file %s %t |
| # RUN: llvm-mc -triple x86_64-elf --filetype=obj -o %t/unwind.o %t/unwind.s |
| # RUN: ld.lld -shared -o %t/libunwind.so -soname libunwind.so %t/unwind.o |
| # RUN: llvm-as -o %t/resume.bc %t/resume.ll |
| # RUN: ld.lld -shared -o %t/libresume.so -soname libresume.so %t/resume.bc \ |
| # RUN: %t/libunwind.so --wrap _Unwind_Resume |
| # RUN: llvm-objdump --no-print-imm-hex --dynamic-reloc --disassemble %t/libresume.so | \ |
| # RUN: FileCheck --check-prefix=UNWIND-DISASM %s |
| # RUN: llvm-readelf --dyn-syms %t/libresume.so | \ |
| # RUN: FileCheck --check-prefix=UNWIND-DYNSYM %s |
| |
| # UNWIND-DISASM: [[#%x,RELOC:]] R_X86_64_JUMP_SLOT __wrap__Unwind_Resume |
| # UNWIND-DISASM-LABEL: <_Z1fv>: |
| # UNWIND-DISASM: callq {{.*}}<__wrap__Unwind_Resume@plt> |
| # UNWIND-DISASM-LABEL: <__wrap__Unwind_Resume@plt>: |
| # UNWIND-DISASM-NEXT: jmpq *[[#]](%rip) # [[#%#x,RELOC]] |
| |
| # UNWIND-DYNSYM: Symbol table '.dynsym' contains 4 entries: |
| # UNWIND-DYNSYM: NOTYPE LOCAL DEFAULT UND |
| # UNWIND-DYNSYM-NEXT: NOTYPE GLOBAL DEFAULT UND throw |
| # UNWIND-DYNSYM-NEXT: NOTYPE GLOBAL DEFAULT UND __wrap__Unwind_Resume |
| # UNWIND-DYNSYM-NEXT: FUNC GLOBAL DEFAULT 9 _Z1fv |
| |
| # RUN: llvm-mc -triple x86_64-elf -filetype=obj -o %t/malloc.o %t/malloc.s |
| # RUN: ld.lld -shared -o %t/libmalloc.so -soname libmalloc.so %t/malloc.o |
| # RUN: llvm-mc -triple x86_64-elf -filetype=obj -o %t/emutls.o %t/emutls.s |
| # RUN: llvm-as -o %t/usetls.bc %t/usetls.ll |
| # RUN: ld.lld -shared -o %t/libusetls.so \ |
| # RUN: %t/usetls.bc %t/libmalloc.so \ |
| # RUN: --start-lib %t/emutls.o -mllvm -emulated-tls --wrap malloc |
| # RUN: llvm-objdump --no-print-imm-hex --dynamic-reloc --disassemble %t/libusetls.so | \ |
| # RUN: FileCheck --check-prefix=USETLS-DISASM %s |
| # RUN: llvm-readelf --dyn-syms %t/libusetls.so | \ |
| # RUN: FileCheck --check-prefix=USETLS-DYNSYM %s |
| |
| # USETLS-DISASM: [[#%x,RELOC:]] R_X86_64_JUMP_SLOT __wrap_malloc |
| # USETLS-DISASM-LABEL: <__emutls_get_address>: |
| # USETLS-DISASM-NEXT: jmp{{.*}}<__wrap_malloc@plt> |
| # USETLS-DISASM-LABEL: <__wrap_malloc@plt>: |
| # USETLS-DISASM-NEXT: jmpq *[[#]](%rip) # [[#%#x,RELOC]] |
| |
| # USETLS-DYNSYM: Symbol table '.dynsym' contains 5 entries: |
| # USETLS-DYNSYM: NOTYPE LOCAL DEFAULT UND |
| # USETLS-DYNSYM-NEXT: NOTYPE GLOBAL DEFAULT UND __wrap_malloc |
| # USETLS-DYNSYM-NEXT: FUNC GLOBAL DEFAULT 6 f |
| # USETLS-DYNSYM-NEXT: NOTYPE GLOBAL DEFAULT 6 __emutls_get_address |
| |
| #--- unwind.s |
| .globl _Unwind_Resume |
| .globl __wrap__Unwind_Resume |
| _Unwind_Resume: |
| __wrap__Unwind_Resume: |
| retq |
| |
| #--- resume.ll |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| define dso_local void @_Z1fv() optnone noinline personality ptr @throw { |
| invoke void @throw() |
| to label %unreachable unwind label %lpad |
| lpad: |
| %1 = landingpad { ptr, i32 } |
| cleanup |
| resume { ptr, i32 } %1 |
| unreachable: |
| unreachable |
| } |
| declare void @throw() |
| |
| #--- malloc.s |
| .globl malloc |
| malloc: |
| retq |
| |
| #--- emutls.s |
| .globl __emutls_get_address |
| __emutls_get_address: |
| jmp malloc@plt |
| |
| #--- usetls.ll |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| @x = dso_local thread_local global i32 0, align 4 |
| define dso_local i32 @f() { |
| %loaded = load i32, ptr @x, align 4 |
| ret i32 %loaded |
| } |