lld/test/ELF/arm-thumb-interwork-thunk-v5.s

   1 // REQUIRES: arm
   2 // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv5-none-linux-gnueabi %s -o %t
   3 // RUN: ld.lld %t -o %t2
   4 // RUN: llvm-objdump --no-print-imm-hex -d %t2 --triple=armv5-none-linux-gnueabi | FileCheck %s
   5 // RUN: ld.lld %t -o %t3 --shared
   6 // RUN: llvm-objdump --no-print-imm-hex -d %t3 --triple=armv5-none-linux-gnueabi | FileCheck --check-prefix=CHECK-PI %s
   7
   8 // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv5eb-none-linux-gnueabi %s -o %t
   9 // RUN: ld.lld %t -o %t2
  10 // RUN: llvm-objdump --no-print-imm-hex -d %t2 --triple=armv5eb-none-linux-gnueabi | FileCheck --check-prefix=CHECK-EB %s
  11 // RUN: ld.lld %t -o %t3 --shared
  12 // RUN: llvm-objdump --no-print-imm-hex -d %t3 --triple=armv5eb-none-linux-gnueabi | FileCheck --check-prefix=CHECK-EB-PI %s
  13
  14 // Test ARM Thumb Interworking on older Arm architectures using Thunks that do
  15 // not use MOVT/MOVW instructions.
  16 // For pure interworking (not considering range extension) there is only the
  17 // case of an Arm B to a Thumb Symbol to consider as in older Arm architectures
  18 // there is no Thumb B.w that we can intercept with a Thunk and we still assume
  19 // support for the blx instruction for Thumb BL and BLX to an Arm symbol.
  20         .arm
  21         .text
  22         .syntax unified
  23         .cpu    arm10tdmi
  24
  25         .text
  26         .globl _start
  27         .type _start, %function
  28         .balign 0x1000
  29 _start:
  30         b thumb_func
  31         bl thumb_func
  32         blx thumb_func
  33         bx lr
  34
  35 // CHECK: <_start>:
  36 // CHECK-NEXT: 21000: ea000003        b       0x21014 <__ARMv5LongLdrPcThunk_thumb_func>
  37 // CHECK-NEXT: 21004: fa000001        blx     0x21010 <thumb_func>
  38 // CHECK-NEXT: 21008: fa000000        blx     0x21010 <thumb_func>
  39 // CHECK-NEXT: 2100c: e12fff1e        bx      lr
  40
  41 // CHECK: <thumb_func>:
  42 // CHECK-NEXT: 21010: 4770    bx      lr
  43
  44 // CHECK: <__ARMv5LongLdrPcThunk_thumb_func>:
  45 // CHECK-NEXT: 21014: e51ff004        ldr     pc, [pc, #-4]
  46 // CHECK-NEXT: 21018: 11 10 02 00     .word   0x00021011
  47
  48 // CHECK-EB: <_start>:
  49 // CHECK-EB-NEXT: 21000: ea000003        b       0x21014 <__ARMv5LongLdrPcThunk_thumb_func>
  50 // CHECK-EB-NEXT: 21004: fa000001        blx     0x21010 <thumb_func>
  51 // CHECK-EB-NEXT: 21008: fa000000        blx     0x21010 <thumb_func>
  52 // CHECK-EB-NEXT: 2100c: e12fff1e        bx      lr
  53
  54 // CHECK-EB: <thumb_func>:
  55 // CHECK-EB-NEXT: 21010: 4770    bx      lr
  56
  57 // CHECK-EB: <__ARMv5LongLdrPcThunk_thumb_func>:
  58 // CHECK-EB-NEXT: 21014: e51ff004        ldr     pc, [pc, #-4]
  59 // CHECK-EB-NEXT: 21018: 00 02 10 11     .word   0x00021011
  60
  61 // CHECK-PI: <_start>:
  62 // CHECK-PI-NEXT: 11000: ea000003        b       0x11014 <__ARMv4PILongBXThunk_thumb_func>
  63 // CHECK-PI-NEXT: 11004: fa000001        blx     0x11010 <thumb_func>
  64 // CHECK-PI-NEXT: 11008: fa000000        blx     0x11010 <thumb_func>
  65 // CHECK-PI-NEXT: 1100c: e12fff1e        bx      lr
  66
  67 // CHECK-PI: <thumb_func>:
  68 // CHECK-PI-NEXT: 11010: 4770    bx      lr
  69
  70 // CHECK-PI: <__ARMv4PILongBXThunk_thumb_func>:
  71 // CHECK-PI-NEXT: 11014: e59fc004        ldr     r12, [pc, #4]
  72 // CHECK-PI-NEXT: 11018: e08fc00c        add     r12, pc, r12
  73 // CHECK-PI-NEXT: 1101c: e12fff1c        bx      r12
  74 // CHECK-PI-NEXT: 11020: f1 ff ff ff     .word   0xfffffff1
  75
  76 // CHECK-EB-PI: <_start>:
  77 // CHECK-EB-PI-NEXT: 11000: ea000003        b       0x11014 <__ARMv4PILongBXThunk_thumb_func>
  78 // CHECK-EB-PI-NEXT: 11004: fa000001        blx     0x11010 <thumb_func>
  79 // CHECK-EB-PI-NEXT: 11008: fa000000        blx     0x11010 <thumb_func>
  80 // CHECK-EB-PI-NEXT: 1100c: e12fff1e        bx      lr
  81
  82 // CHECK-EB-PI: <thumb_func>:
  83 // CHECK-EB-PI-NEXT: 11010: 4770    bx      lr
  84
  85 // CHECK-EB-PI: <__ARMv4PILongBXThunk_thumb_func>:
  86 // CHECK-EB-PI-NEXT: 11014: e59fc004        ldr     r12, [pc, #4]
  87 // CHECK-EB-PI-NEXT: 11018: e08fc00c        add     r12, pc, r12
  88 // CHECK-EB-PI-NEXT: 1101c: e12fff1c        bx      r12
  89 // CHECK-EB-PI-NEXT: 11020: ff ff ff f1     .word   0xfffffff1
  90         .section .text.1, "ax", %progbits
  91         .thumb
  92         .hidden thumb_func
  93         .type thumb_func, %function
  94 thumb_func:
  95         bx lr