| // REQUIRES: arm |
| // RUN: split-file %s %t |
| // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=thumbv7a-none-linux-gnueabi %t/test.s -o %t.o |
| // RUN: ld.lld --script %t/script %t.o -o %t2 |
| // RUN: llvm-objdump --no-show-raw-insn -d %t2 | FileCheck %s |
| |
| /// Test that we can reuse thunks between Arm and Thumb callers |
| /// using a BL. Expect two thunks, one for far, one for far2. |
| |
| //--- script |
| SECTIONS { |
| .text 0x10000 : { *(.text) } |
| .text.far 0x10000000 : AT (0x10000000) { *(.far) } |
| } |
| |
| //--- test.s |
| |
| .syntax unified |
| .text |
| .globl _start |
| .type _start, %function |
| .arm |
| _start: |
| bl far |
| .thumb |
| bl far |
| bl far2 |
| .arm |
| bl far2 |
| |
| // CHECK: 00010000 <_start>: |
| // CHECK-NEXT: 10000: bl 0x10010 <__ARMv7ABSLongThunk_far> |
| // CHECK: 00010004 <$t.1>: |
| // CHECK-NEXT: 10004: blx 0x10010 <__ARMv7ABSLongThunk_far> |
| // CHECK-NEXT: 10008: bl 0x1001c <__Thumbv7ABSLongThunk_far2> |
| // CHECK: 0001000c <$a.2>: |
| // CHECK-NEXT: 1000c: blx 0x1001c <__Thumbv7ABSLongThunk_far2> |
| // CHECK: 00010010 <__ARMv7ABSLongThunk_far>: |
| // CHECK-NEXT: 10010: movw r12, #0 |
| // CHECK-NEXT: 10014: movt r12, #4096 |
| // CHECK-NEXT: 10018: bx r12 |
| // CHECK: 0001001c <__Thumbv7ABSLongThunk_far2>: |
| // CHECK-NEXT: 1001c: movw r12, #4 |
| // CHECK-NEXT: 10020: movt r12, #4096 |
| // CHECK-NEXT: 10024: bx r12 |
| |
| .section .text.far, "ax", %progbits |
| .globl far |
| .type far, %function |
| far: |
| bx lr |
| .globl far2 |
| .type far2, %function |
| far2: |
| bx lr |
| |
| // CHECK: Disassembly of section .text.far: |
| // CHECK: 10000000 <far>: |
| // CHECK-NEXT: 10000000: bx lr |
| // CHECK: 10000004 <far2>: |
| // CHECK-NEXT: 10000004: bx lr |
