# REQUIRES: x86 # RUN: mkdir -p %t # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %p/Inputs/libhello.s \ # RUN: -o %t/libhello.o # RUN: %lld -lSystem -dylib -install_name \ # RUN: @executable_path/libhello.dylib %t/libhello.o -o %t/libhello.dylib # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %s -o %t/test.o # RUN: %lld -lSystem -o %t/test %t/test.o -L%t -lhello # RUN: llvm-objdump --full-contents --rebase --bind %t/test | FileCheck %s --match-full-lines ## Check that the GOT references the cstrings. --full-contents displays the ## address offset and the contents at that address very similarly, so am using ## --match-full-lines to make sure we match on the right thing. # CHECK: Contents of section __TEXT,__cstring: # CHECK-NEXT: 100000424 {{.*}} ## 1st 8 bytes refer to the start of __cstring + 0xe, 2nd 8 bytes refer to the ## start of __cstring # CHECK: Contents of section __DATA_CONST,__got: # CHECK-NEXT: [[#%X,ADDR:]] 32040000 01000000 24040000 01000000 {{.*}} # CHECK-NEXT: [[#ADDR + 16]] 00000000 00000000 {{.*}} ## Check that the rebase table is empty. # CHECK: Rebase table: # CHECK-NEXT: segment section address type ## Check that a non-locally-defined symbol is still bound at the correct offset: # CHECK-NEXT: Bind table: # CHECK-NEXT: segment section address type addend dylib symbol # CHECK-NEXT: __DATA_CONST __got 0x[[#ADDR+16]] pointer 0 libhello _hello_its_me # RUN: %lld -pie -lSystem -o %t/test %t/test.o -L%t -lhello # RUN: llvm-objdump --macho --rebase --bind %t/test | FileCheck %s --check-prefix=PIE --match-full-lines # PIE: Rebase table: # PIE-NEXT: segment section address type # PIE-NEXT: __DATA_CONST __got 0x[[#%X,ADDR:]] pointer # PIE-NEXT: __DATA_CONST __got 0x[[#ADDR + 8]] pointer # PIE-NEXT: Bind table: # PIE-NEXT: segment section address type addend dylib symbol # PIE-NEXT: __DATA_CONST __got 0x[[#ADDR+16]] pointer 0 libhello _hello_its_me .globl _main .text _main: movl $0x2000004, %eax # write() syscall mov $1, %rdi # stdout movq _hello_its_me@GOTPCREL(%rip), %rsi mov $15, %rdx # length of str syscall movl $0x2000004, %eax # write() syscall mov $1, %rdi # stdout ## We use pushq/popq here instead of movq in order to avoid relaxation. pushq _hello_world@GOTPCREL(%rip) popq %rsi mov $13, %rdx # length of str syscall movl $0x2000004, %eax # write() syscall mov $1, %rdi # stdout pushq _goodbye_world@GOTPCREL(%rip) popq %rsi mov $15, %rdx # length of str syscall mov $0, %rax ret .section __TEXT,__cstring _hello_world: .asciz "Hello world!\n" _goodbye_world: .asciz "Goodbye world!\n"