1// REQUIRES: x86
2// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
3// RUN: ld.lld %t.o -shared -o %t.so
4// RUN: llvm-readelf -S %t.so | FileCheck %s -check-prefix=SECTION
5// RUN: llvm-objdump -d %t.so | FileCheck %s
6
7// SECTION: .dynamic DYNAMIC 0000000000002000
8// SECTION: .got.plt PROGBITS 0000000000003000 003000 000018
9
10// The assembly is generated by
11// gcc -O2 -S -mcmodel=medium -fPIC a.c
12// This computes the pc-relative address (runtime address) of _DYNAMIC.
13//
14// extern long _DYNAMIC[] __attribute__((visibility("hidden")));
15// long* dynamic() { return _DYNAMIC; }
16
17// 0x3000 (.got.plt) - 0x1007 = 8185
18// 0x2000 (_DYNAMIC) - 0x3000 (.got.plt) = -4096
19// CHECK:      1000: {{.*}} leaq 8185(%rip), %rdx
20// CHECK-NEXT: 1007: {{.*}} movabsq $-4096, %rax
21.global dynamic
22dynamic:
23  leaq _GLOBAL_OFFSET_TABLE_(%rip), %rdx
24  movabsq $_DYNAMIC@GOTOFF, %rax
25  addq %rdx, %rax
26  ret
27