lld/test/ELF/arm-thumb-interwork-ifunc.s

   1 // REQUIRES: arm
   2 // RUN: llvm-mc --triple=armv7a-linux-gnueabihf -arm-add-build-attributes -filetype=obj -o %t.o %s
   3 // RUN: ld.lld %t.o -o %t
   4 // RUN: llvm-objdump --no-print-imm-hex --triple=armv7a-none-linux-gnueabi -d --no-show-raw-insn %t | FileCheck %s
   5
   6 /// A symbol assignment defined alias inherits st_type and gets the same treatment.
   7 // RUN: llvm-mc --triple=armv7a-linux-gnueabihf -arm-add-build-attributes -filetype=obj --defsym ALIAS=1 -o %t1.o %s
   8 // RUN: ld.lld --defsym foo=foo1 %t1.o -o %t1
   9 // RUN: llvm-objdump --no-print-imm-hex --triple=armv7a-none-linux-gnueabi -d --no-show-raw-insn %t | FileCheck %s
  10
  11 /// Non-preemptible ifuncs are called via a PLT entry which is always Arm
  12 /// state, expect the ARM callers to go direct to the PLT entry, Thumb
  13 /// branches are indirected via state change thunks, the bl is changed to blx.
  14
  15  .syntax unified
  16  .text
  17  .balign 0x1000
  18 .ifdef ALIAS
  19  .type foo1 STT_GNU_IFUNC
  20  .globl foo1
  21 foo1:
  22 .else
  23  .type foo STT_GNU_IFUNC
  24  .globl foo
  25 foo:
  26 .endif
  27  bx lr
  28
  29  .section .text.1, "ax", %progbits
  30  .arm
  31  .global _start
  32 _start:
  33  b foo
  34  bl foo
  35
  36  .section .text.2, "ax", %progbits
  37  .thumb
  38  .global thumb_caller
  39 thumb_caller:
  40  b foo
  41  b.w foo
  42  bl foo
  43
  44 // CHECK:      00021004 <_start>:
  45 // CHECK-NEXT: b       0x21030
  46 // CHECK-NEXT: bl      0x21030
  47
  48 // CHECK:      0002100c <thumb_caller>:
  49 // CHECK-NEXT: b.w     0x21018 <__Thumbv7ABSLongThunk_foo>
  50 // CHECK-NEXT: b.w     0x21018 <__Thumbv7ABSLongThunk_foo>
  51 // CHECK-NEXT: blx     0x21030
  52
  53 // CHECK:      00021018 <__Thumbv7ABSLongThunk_foo>:
  54 // CHECK-NEXT: movw    r12, #4144
  55 // CHECK-NEXT: movt    r12, #2
  56 // CHECK-NEXT: bx      r12
  57
  58 // CHECK: Disassembly of section .iplt:
  59
  60 // CHECK:      00021030 <.iplt>:
  61 // CHECK-NEXT: add     r12, pc, #0, #12
  62 // CHECK-NEXT: add     r12, r12, #16, #20
  63 // CHECK-NEXT: ldr     pc, [r12, #8]!