lld/test/ELF/fill-trap.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
   3
   4 ## -z noseparate-code is the default: text segment is not tail padded.
   5 # RUN: ld.lld %t.o -o %t
   6 # RUN: llvm-readobj -l %t | FileCheck %s --check-prefixes=CHECK,NOPAD
   7 # RUN: ld.lld %t.o -z noseparate-code -z common-page-size=512 -o %t
   8 # RUN: llvm-readobj -l %t | FileCheck %s --check-prefixes=CHECK,NOPAD
   9
  10 ## -z separate-code pads the tail of text segment with traps.
  11 ## Make common-page-size smaller than max-page-size.
  12 ## Check that we use max-page-size instead of common-page-size for padding.
  13 # RUN: ld.lld %t.o -z separate-code -z common-page-size=512 -o %t
  14 # RUN: llvm-readobj -l %t | FileCheck %s --check-prefixes=CHECK,PAD
  15 # RUN: od -Ax -x -N16 -j0x1ff0 %t | FileCheck %s --check-prefix=FILL
  16
  17 ## -z separate-loadable-segments pads all segments, including the text segment.
  18 # RUN: ld.lld %t.o -z separate-loadable-segments -z common-page-size=512 -o %t
  19 # RUN: llvm-readobj -l %t | FileCheck %s --check-prefixes=CHECK,PAD
  20 # RUN: od -Ax -x -N16 -j0x1ff0 %t | FileCheck %s --check-prefix=FILL
  21
  22 # RUN: ld.lld %t.o -z separate-code -z noseparate-code -z common-page-size=512 -o %t
  23 # RUN: llvm-readobj -l %t | FileCheck %s --check-prefixes=CHECK,NOPAD
  24
  25 # CHECK: ProgramHeader {
  26 # CHECK:   Type: PT_LOAD
  27 # PAD:     Offset: 0x1000
  28 # NOPAD:   Offset: 0x120
  29 # CHECK-NEXT:   VirtualAddress:
  30 # CHECK-NEXT:   PhysicalAddress:
  31 # PAD-NEXT:     FileSize: 4096
  32 # NOPAD-NEXT:   FileSize: 1
  33 # CHECK-NEXT:   MemSize:
  34 # CHECK-NEXT:   Flags [
  35 # CHECK-NEXT:     PF_R
  36 # CHECK-NEXT:     PF_X
  37 # CHECK-NEXT:   ]
  38
  39 ## Check that executable page is filled with traps at its end.
  40 # FILL: 001ff0 cccc cccc cccc cccc cccc cccc cccc cccc
  41
  42 .globl _start
  43 _start:
  44   nop