lld/test/ELF/arm-thumb-branch.s

   1 // REQUIRES: arm
   2 // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=thumbv7a-none-linux-gnueabi %s -o %t
   3 // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=thumbv7a-none-linux-gnueabi %S/Inputs/far-arm-thumb-abs.s -o %tfar
   4 // RUN: echo "SECTIONS { \
   5 // RUN:          . = 0xb4; \
   6 // RUN:          .callee1 : { *(.callee_low) } \
   7 // RUN:          .caller : { *(.text) } \
   8 // RUN:          .callee2 : { *(.callee_high) } } " > %t.script
   9 // RUN: ld.lld --script %t.script %t %tfar -o %t2
  10 // RUN: llvm-objdump -d %t2 | FileCheck  %s
  11
  12  .syntax unified
  13  .thumb
  14  .section .callee_low, "ax",%progbits
  15  .align 2
  16  .type callee_low,%function
  17 callee_low:
  18  bx lr
  19
  20  .section .text, "ax",%progbits
  21  .globl _start
  22  .balign 0x10000
  23  .type _start,%function
  24 _start:
  25  bl  callee_low
  26  b   callee_low
  27  beq callee_low
  28  bl  callee_high
  29  b   callee_high
  30  bne callee_high
  31  bl  far_uncond
  32  b   far_uncond
  33  bgt far_cond
  34  bx lr
  35
  36  .section .callee_high, "ax",%progbits
  37  .align 2
  38  .type callee_high,%function
  39 callee_high:
  40  bx lr
  41
  42 // CHECK: Disassembly of section .callee1:
  43 // CHECK-EMPTY:
  44 // CHECK-NEXT: <callee_low>:
  45 // CHECK-NEXT:      b4:       70 47   bx      lr
  46 // CHECK-EMPTY:
  47 // CHECK-NEXT: Disassembly of section .caller:
  48 // CHECK-EMPTY:
  49 // CHECK-NEXT: <_start>:
  50 // CHECK-NEXT:   10000:       f0 f7 58 f8     bl      0xb4 <callee_low>
  51 // CHECK-NEXT:   10004:       f0 f7 56 b8     b.w     0xb4 <callee_low>
  52 // CHECK-NEXT:   10008:       30 f4 54 a8     beq.w   0xb4 <callee_low>
  53 // CHECK-NEXT:   1000c:       00 f0 0c f8     bl      0x10028 <callee_high>
  54 // CHECK-NEXT:   10010:       00 f0 0a b8     b.w     0x10028 <callee_high>
  55 // CHECK-NEXT:   10014:       40 f0 08 80     bne.w   0x10028 <callee_high>
  56 /// far_uncond = 0x101001b
  57 // CHECK-NEXT:   10018:       ff f3 ff d7     bl      0x101001a
  58 // CHECK-NEXT:   1001c:       ff f3 fd 97     b.w     0x101001a
  59 /// far_cond = 0x110023
  60 // CHECK-NEXT:   10020:       3f f3 ff af     bgt.w   0x110022
  61 // CHECK-NEXT:   10024:       70 47   bx      lr
  62 // CHECK-NEXT:   10026:
  63 // CHECK-EMPTY:
  64 // CHECK-NEXT: Disassembly of section .callee2:
  65 // CHECK-EMPTY:
  66 // CHECK-NEXT: <callee_high>:
  67 // CHECK-NEXT:   10028:       70 47   bx      lr