lld/test/ELF/arm-fix-cortex-a8-toolarge.s

   1 // REQUIRES: arm
   2 // RUN: llvm-mc -filetype=obj -triple=armv7a-linux-gnueabihf --arm-add-build-attributes %s -o %t.o
   3 // RUN: ld.lld --fix-cortex-a8 -verbose %t.o -o /dev/null 2>&1 | FileCheck %s
   4 /// Test that we warn, but don't attempt to patch when it is impossible to
   5 /// redirect the branch as the Section is too large.
   6
   7 // CHECK: skipping cortex-a8 657417 erratum sequence, section .text is too large to patch
   8 // CHECK: skipping cortex-a8 657417 erratum sequence, section .text.02 is too large to patch
   9
  10  .syntax unified
  11  .thumb
  12 /// Case 1: 1 MiB conditional branch range without relocation.
  13  .text
  14  .global _start
  15  .type _start, %function
  16  .balign 4096
  17  .thumb_func
  18 _start:
  19  nop.w
  20  .space 4086
  21  .thumb_func
  22  .global target
  23  .type target, %function
  24 target:
  25 /// 32-bit Branch spans 2 4KiB regions, preceded by a 32-bit non branch
  26 /// instruction, a patch will be attempted. Unfortunately the branch
  27 /// cannot reach outside the section so we have to abort the patch.
  28  nop.w
  29  beq.w target
  30  .space 1024 * 1024
  31
  32 /// Case 2: 16 MiB
  33  .section .text.01, "ax", %progbits
  34  .balign 4096
  35   .space 4090
  36  .global target2
  37  .thumb_func
  38 target2:
  39  .section .text.02, "ax", %progbits
  40 /// 32-bit Branch and link spans 2 4KiB regions, preceded by a 32-bit
  41 /// non branch instruction, a patch will be be attempted. Unfortunately the
  42 /// the BL cannot reach outside the section so we have to abort the patch.
  43  nop.w
  44  bl target2
  45  .space 16 * 1024 * 1024