| // REQUIRES: x86 |
| // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o |
| // RUN: ld.lld %t.o -shared -o %t.so |
| // RUN: llvm-readelf -S %t.so | FileCheck %s -check-prefix=SECTION |
| // RUN: llvm-objdump -d %t.so | FileCheck %s |
| |
| // SECTION: .dynamic DYNAMIC 0000000000002000 |
| // SECTION: .got.plt PROGBITS 0000000000003000 003000 000018 |
| |
| // The assembly is generated by |
| // gcc -O2 -S -mcmodel=medium -fPIC a.c |
| // This computes the pc-relative address (runtime address) of _DYNAMIC. |
| // |
| // extern long _DYNAMIC[] __attribute__((visibility("hidden"))); |
| // long* dynamic() { return _DYNAMIC; } |
| |
| // 0x3000 (.got.plt) - 0x1007 = 8185 |
| // 0x2000 (_DYNAMIC) - 0x3000 (.got.plt) = -4096 |
| // CHECK: 1000: {{.*}} leaq 8185(%rip), %rdx |
| // CHECK-NEXT: 1007: {{.*}} movabsq $-4096, %rax |
| .global dynamic |
| dynamic: |
| leaq _GLOBAL_OFFSET_TABLE_(%rip), %rdx |
| movabsq $_DYNAMIC@GOTOFF, %rax |
| addq %rdx, %rax |
| ret |
