test/ELF/arm-thunk-edgecase.s

   1 // REQUIRES: arm
   2 // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t.o
   3 // RUN: echo "SECTIONS { \
   4 // RUN:           .text_armfunc 0x1000 : { *(.text_armfunc) } \
   5 // RUN:           .text_thumbfunc 0x11010 : { *(.text_thumbfunc) } \
   6 // RUN:       }" > %tarm_to_thumb.script
   7 // RUN: echo "SECTIONS { \
   8 // RUN:           .text_thumbfunc 0x1000 : { *(.text_thumbfunc) } \
   9 // RUN:           .text_armfunc 0x1100c : { *(.text_armfunc) } \
  10 // RUN:       }" > %tthumb_to_arm.script
  11 // RUN: ld.lld -shared -Bsymbolic -script %tarm_to_thumb.script %t.o -o %tarm_to_thumb.so
  12 // RUN: ld.lld -shared -Bsymbolic -script %tthumb_to_arm.script %t.o -o %tthumb_to_arm.so
  13 // RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d %tarm_to_thumb.so | FileCheck -check-prefix=ARM-TO-THUMB %s
  14 // RUN: llvm-objdump -triple=thumbv7a-none-linux-gnueabi -d %tthumb_to_arm.so | FileCheck -check-prefix=THUMB-TO-ARM %s
  15
  16 .syntax unified
  17
  18 .arm
  19 .section .text_armfunc, "ax", %progbits
  20 .globl armfunc
  21 armfunc:
  22         b       thumbfunc
  23
  24 .thumb
  25 .section .text_thumbfunc, "ax", %progbits
  26 .globl thumbfunc
  27 .thumb_func
  28 thumbfunc:
  29         b.w     armfunc
  30
  31 // ARM-TO-THUMB:      __ARMV7PILongThunk_thumbfunc:
  32 // ARM-TO-THUMB-NEXT:     1004:        fd cf 0f e3         movw        r12, #65533
  33 // ARM-TO-THUMB-NEXT:     1008:        00 c0 40 e3         movt        r12, #0
  34
  35 // THUMB-TO-ARM:      __ThumbV7PILongThunk_armfunc:
  36 // THUMB-TO-ARM-NEXT:     1004:        4f f6 fc 7c         movw        r12, #65532
  37 // THUMB-TO-ARM-NEXT:     1008:        c0 f2 00 0c         movt        r12, #0