lld/test/ELF/aarch64-thunk-script.s

   1 // REQUIRES: aarch64
   2 // RUN: split-file %s %t
   3 // RUN: llvm-mc -filetype=obj -triple=aarch64 %t/asm -o %t.o
   4 // RUN: ld.lld --script %t/lds %t.o -o %t/out
   5 // RUN: llvm-objdump -d --no-show-raw-insn --print-imm-hex %t/out | FileCheck %s
   6 // RUN: llvm-nm --no-sort --special-syms %t/out | FileCheck --check-prefix=NM %s
   7
   8 //--- asm
   9 // Check that we have the out of branch range calculation right. The immediate
  10 // field is signed so we have a slightly higher negative displacement.
  11  .section .text_low, "ax", %progbits
  12  .globl _start
  13  .type _start, %function
  14 _start:
  15  // Need thunk to high_target@plt
  16  bl high_target
  17  // Need thunk to .text_high+4
  18  bl .text_high+4
  19  ret
  20
  21  .section .text_high, "ax", %progbits
  22  .globl high_target
  23  .type high_target, %function
  24 high_target:
  25  // No Thunk needed as we are within signed immediate range
  26  bl _start
  27  ret
  28
  29 // CHECK: Disassembly of section .text_low:
  30 // CHECK-EMPTY:
  31 // CHECK-NEXT: <_start>:
  32 // CHECK-NEXT:     2000:       bl      0x200c <__AArch64AbsLongThunk_high_target>
  33 // CHECK-NEXT:     2004:       bl      0x2010 <__AArch64AbsLongThunk_>
  34 // CHECK-NEXT:                 ret
  35 // CHECK: <__AArch64AbsLongThunk_high_target>:
  36 // CHECK-NEXT:     200c:       b       0x8002000 <high_target>
  37 // CHECK: <__AArch64AbsLongThunk_>:
  38 // CHECK-NEXT:     2010:       b       0x8002004 <high_target+0x4>
  39 // CHECK: Disassembly of section .text_high:
  40 // CHECK-EMPTY:
  41 // CHECK-NEXT: <high_target>:
  42 // CHECK-NEXT:  8002000:       bl      0x2000 <_start>
  43 // CHECK-NEXT:                 ret
  44
  45 /// Local symbols copied from %t.o
  46 // NM:      t $x
  47 // NM-NEXT: t $x
  48 /// Local thunk symbols.
  49 // NM-NEXT: t __AArch64AbsLongThunk_high_target
  50 // NM-NEXT: t $x
  51 // NM-NEXT: t __AArch64AbsLongThunk_{{$}}
  52 // NM-NEXT: t $x
  53 /// Global symbols.
  54 // NM-NEXT: T _start
  55 // NM-NEXT: T high_target
  56
  57 //--- lds
  58 PHDRS {
  59   low PT_LOAD FLAGS(0x1 | 0x4);
  60   high PT_LOAD FLAGS(0x1 | 0x4);
  61 }
  62 SECTIONS {
  63   .text_low 0x2000: { *(.text_low) } :low
  64   .text_high 0x8002000 : { *(.text_high) } :high
  65 }