| // REQUIRES: arm |
| // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv7a-none-linux-gnueabi %S/Inputs/arm-shared.s -o %t1.o |
| // RUN: ld.lld %t1.o --shared -soname=t1.so -o %t1.so |
| // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t.o |
| // RUN: ld.lld %t.o %t1.so -o %t |
| // RUN: llvm-objdump -d --triple=armv7a-none-linux-gnueabi --start-address=0x201e4 --stop-address=0x20204 %t | FileCheck %s |
| |
| /// When we are dynamic linking, undefined weak references have a PLT entry so |
| /// we must create a thunk for the branch to the PLT entry. |
| |
| .text |
| .globl bar2 |
| .weak undefined_weak_we_expect_a_plt_entry_for |
| _start: |
| .globl _start |
| .type _start, %function |
| b undefined_weak_we_expect_a_plt_entry_for |
| bl bar2 |
| /// Create 32 Mb gap between the call to the weak reference and the PLT so that |
| /// the b and bl need a range-extension thunk. |
| .section .text.1, "ax", %progbits |
| .space 32 * 1024 * 1024 |
| |
| // CHECK: Disassembly of section .text: |
| // CHECK-EMPTY: |
| // CHECK-NEXT: <_start>: |
| // CHECK-NEXT: 201e4: 00 00 00 ea b 0x201ec <__ARMv7ABSLongThunk_undefined_weak_we_expect_a_plt_entry_for> |
| // CHECK-NEXT: 201e8: 02 00 00 eb bl 0x201f8 <__ARMv7ABSLongThunk_bar2> |
| // CHECK: <__ARMv7ABSLongThunk_undefined_weak_we_expect_a_plt_entry_for>: |
| // CHECK-NEXT: 201ec: 30 c2 00 e3 movw r12, #560 |
| // CHECK-NEXT: 201f0: 02 c2 40 e3 movt r12, #514 |
| // CHECK-NEXT: 201f4: 1c ff 2f e1 bx r12 |
| // CHECK: <__ARMv7ABSLongThunk_bar2>: |
| // CHECK-NEXT: 201f8: 40 c2 00 e3 movw r12, #576 |
| // CHECK-NEXT: 201fc: 02 c2 40 e3 movt r12, #514 |
| // CHECK-NEXT: 20200: 1c ff 2f e1 bx r12 |