1# REQUIRES: x86 2## Verify that we can correctly wrap symbols produced only during LTO codegen 3## and unreferenced before then. 4 5# RUN: rm -rf %t && split-file %s %t 6# RUN: llvm-mc -triple x86_64-elf --filetype=obj -o %t/unwind.o %t/unwind.s 7# RUN: ld.lld -shared -o %t/libunwind.so -soname libunwind.so %t/unwind.o 8# RUN: llvm-as -o %t/resume.bc %t/resume.ll 9# RUN: ld.lld -shared -o %t/libresume.so -soname libresume.so %t/resume.bc \ 10# RUN: %t/libunwind.so --wrap _Unwind_Resume 11# RUN: llvm-objdump --no-print-imm-hex --dynamic-reloc --disassemble %t/libresume.so | \ 12# RUN: FileCheck --check-prefix=UNWIND-DISASM %s 13# RUN: llvm-readelf --dyn-syms %t/libresume.so | \ 14# RUN: FileCheck --check-prefix=UNWIND-DYNSYM %s 15 16# UNWIND-DISASM: [[#%x,RELOC:]] R_X86_64_JUMP_SLOT __wrap__Unwind_Resume 17# UNWIND-DISASM-LABEL: <_Z1fv>: 18# UNWIND-DISASM: callq {{.*}}<__wrap__Unwind_Resume@plt> 19# UNWIND-DISASM-LABEL: <__wrap__Unwind_Resume@plt>: 20# UNWIND-DISASM-NEXT: jmpq *[[#]](%rip) # [[#%#x,RELOC]] 21 22# UNWIND-DYNSYM: Symbol table '.dynsym' contains 4 entries: 23# UNWIND-DYNSYM: NOTYPE LOCAL DEFAULT UND 24# UNWIND-DYNSYM-NEXT: NOTYPE GLOBAL DEFAULT UND throw 25# UNWIND-DYNSYM-NEXT: NOTYPE GLOBAL DEFAULT UND __wrap__Unwind_Resume 26# UNWIND-DYNSYM-NEXT: FUNC GLOBAL DEFAULT 9 _Z1fv 27 28# RUN: llvm-mc -triple x86_64-elf -filetype=obj -o %t/malloc.o %t/malloc.s 29# RUN: ld.lld -shared -o %t/libmalloc.so -soname libmalloc.so %t/malloc.o 30# RUN: llvm-mc -triple x86_64-elf -filetype=obj -o %t/emutls.o %t/emutls.s 31# RUN: llvm-as -o %t/usetls.bc %t/usetls.ll 32# RUN: ld.lld -shared -o %t/libusetls.so \ 33# RUN: %t/usetls.bc %t/libmalloc.so \ 34# RUN: --start-lib %t/emutls.o -mllvm -emulated-tls --wrap malloc 35# RUN: llvm-objdump --no-print-imm-hex --dynamic-reloc --disassemble %t/libusetls.so | \ 36# RUN: FileCheck --check-prefix=USETLS-DISASM %s 37# RUN: llvm-readelf --dyn-syms %t/libusetls.so | \ 38# RUN: FileCheck --check-prefix=USETLS-DYNSYM %s 39 40# USETLS-DISASM: [[#%x,RELOC:]] R_X86_64_JUMP_SLOT __wrap_malloc 41# USETLS-DISASM-LABEL: <__emutls_get_address>: 42# USETLS-DISASM-NEXT: jmp{{.*}}<__wrap_malloc@plt> 43# USETLS-DISASM-LABEL: <__wrap_malloc@plt>: 44# USETLS-DISASM-NEXT: jmpq *[[#]](%rip) # [[#%#x,RELOC]] 45 46# USETLS-DYNSYM: Symbol table '.dynsym' contains 5 entries: 47# USETLS-DYNSYM: NOTYPE LOCAL DEFAULT UND 48# USETLS-DYNSYM-NEXT: NOTYPE GLOBAL DEFAULT UND __wrap_malloc 49# USETLS-DYNSYM-NEXT: FUNC GLOBAL DEFAULT 6 f 50# USETLS-DYNSYM-NEXT: NOTYPE GLOBAL DEFAULT 6 __emutls_get_address 51 52#--- unwind.s 53.globl _Unwind_Resume 54.globl __wrap__Unwind_Resume 55_Unwind_Resume: 56__wrap__Unwind_Resume: 57 retq 58 59#--- resume.ll 60target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 61target triple = "x86_64-unknown-linux-gnu" 62define dso_local void @_Z1fv() optnone noinline personality ptr @throw { 63 invoke void @throw() 64 to label %unreachable unwind label %lpad 65lpad: 66 %1 = landingpad { ptr, i32 } 67 cleanup 68 resume { ptr, i32 } %1 69unreachable: 70 unreachable 71} 72declare void @throw() 73 74#--- malloc.s 75.globl malloc 76malloc: 77 retq 78 79#--- emutls.s 80.globl __emutls_get_address 81__emutls_get_address: 82 jmp malloc@plt 83 84#--- usetls.ll 85target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 86target triple = "x86_64-unknown-linux-gnu" 87@x = dso_local thread_local global i32 0, align 4 88define dso_local i32 @f() { 89 %loaded = load i32, ptr @x, align 4 90 ret i32 %loaded 91} 92