| // REQUIRES: arm |
| // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv5-none-linux-gnueabi %s -o %t |
| // RUN: ld.lld %t -o %t2 |
| // RUN: llvm-objdump -d %t2 -triple=armv5-none-linux-gnueabi | FileCheck -check-prefix=CHECK-ARM %s |
| // RUN: llvm-objdump -d %t2 -triple=thumbv5-none-linux-gnueabi | FileCheck -check-prefix=CHECK-THUMB %s |
| // RUN: ld.lld %t -o %t3 --shared |
| // RUN: llvm-objdump -d %t3 -triple=armv5-none-linux-gnueabi | FileCheck -check-prefix=CHECK-ARM-PI %s |
| // RUN: llvm-objdump -d %t3 -triple=thumbv5-none-linux-gnueabi | FileCheck -check-prefix=CHECK-THUMB-PI %s |
| |
| // Test ARM Thumb Interworking on older Arm architectures using Thunks that do |
| // not use MOVT/MOVW instructions. |
| // For pure interworking (not considering range extension) there is only the |
| // case of an Arm B to a Thumb Symbol to consider as in older Arm architectures |
| // there is no Thumb B.w that we can intercept with a Thunk and we still assume |
| // support for the blx instruction for Thumb BL and BLX to an Arm symbol. |
| .arm |
| .text |
| .syntax unified |
| .cpu arm10tdmi |
| |
| .text |
| .globl _start |
| .type _start, %function |
| .balign 0x1000 |
| _start: |
| b thumb_func |
| bl thumb_func |
| blx thumb_func |
| bx lr |
| |
| // CHECK-ARM: _start: |
| // CHECK-ARM-NEXT: 11000: 03 00 00 ea b #12 <__ARMv5ABSLongThunk_thumb_func> |
| // CHECK-ARM-NEXT: 11004: 01 00 00 fa blx #4 <thumb_func> |
| // CHECK-ARM-NEXT: 11008: 00 00 00 fa blx #0 <thumb_func> |
| // CHECK-ARM-NEXT: 1100c: 1e ff 2f e1 bx lr |
| |
| // CHECK-THUMB: thumb_func: |
| // CHECK-THUMB-NEXT: 11010: 70 47 bx lr |
| |
| // CHECK-ARM: __ARMv5ABSLongThunk_thumb_func: |
| // CHECK-ARM-NEXT: 11014: 04 f0 1f e5 ldr pc, [pc, #-4] |
| // CHECK-ARM: $d: |
| // CHECK-ARM-NEXT: 11018: 11 10 01 00 .word 0x00011011 |
| |
| // CHECK-ARM-PI: _start: |
| // CHECK-ARM-PI-NEXT: 1000: 03 00 00 ea b #12 <__ARMV5PILongThunk_thumb_func> |
| // CHECK-ARM-PI-NEXT: 1004: 01 00 00 fa blx #4 <thumb_func> |
| // CHECK-ARM-PI-NEXT: 1008: 00 00 00 fa blx #0 <thumb_func> |
| // CHECK-ARM-PI-NEXT: 100c: 1e ff 2f e1 bx lr |
| |
| // CHECK-THUMB-PI: thumb_func: |
| // CHECK-THUMB-PI-NEXT: 1010: 70 47 bx lr |
| |
| // CHECK-ARM-PI: __ARMV5PILongThunk_thumb_func: |
| // CHECK-ARM-PI-NEXT: 1014: 04 c0 9f e5 ldr r12, [pc, #4] |
| // CHECK-ARM-PI-NEXT: 1018: 0c c0 8f e0 add r12, pc, r12 |
| // CHECK-ARM-PI-NEXT: 101c: 1c ff 2f e1 bx r12 |
| // CHECK-ARM-PI: $d: |
| // CHECK-ARM-PI-NEXT: 1020: f1 ff ff ff .word 0xfffffff1 |
| |
| .section .text.1, "ax", %progbits |
| .thumb |
| .hidden thumb_func |
| .type thumb_func, %function |
| thumb_func: |
| bx lr |
