lld/test/ELF/linkerscript/entry.s

   1 # REQUIRES: x86
   2
   3 # RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
   4
   5 # RUN: echo "ENTRY(_label)" > %t.script
   6 # RUN: ld.lld %t.script %t.o -o %t
   7 # RUN: llvm-readelf -hs %t | FileCheck %s
   8
   9 # RUN: echo 'ENTRY("_label")' > %t.script
  10 # RUN: ld.lld %t.script %t.o -o %t
  11 # RUN: llvm-readelf -hs %t | FileCheck %s
  12
  13 # CHECK: Entry point address: 0x[[#%x,ENTRY:]]
  14 # CHECK: [[#]]: {{0*}}[[#ENTRY]]   0 NOTYPE  GLOBAL DEFAULT [[#]] _label
  15
  16 ## -e overrides the ENTRY command.
  17 # RUN: echo "ENTRY(_label)" > %t.script
  18 # RUN: ld.lld -e _start -o %t2 %t.script %t.o
  19 # RUN: llvm-readobj --file-headers --symbols %t2 | \
  20 # RUN:   FileCheck -check-prefix=OVERLOAD %s
  21
  22 # OVERLOAD: Entry: [[ENTRY:0x[0-9A-F]+]]
  23 # OVERLOAD: Name: _start
  24 # OVERLOAD-NEXT: Value: [[ENTRY]]
  25
  26 ## The entry symbol can be a linker-script-defined symbol.
  27 # RUN: echo "ENTRY(foo); foo = 1;" > %t.script
  28 # RUN: ld.lld -o %t %t.script %t.o
  29 # RUN: llvm-readobj --file-headers --symbols %t | FileCheck --check-prefix=SCRIPT %s
  30
  31 # SCRIPT: Entry: 0x1
  32
  33 ## An undefined entry symbol causes a warning.
  34 # RUN: echo "ENTRY(no_such_symbol);" > %t.script
  35 # RUN: ld.lld %t.script %t.o -o /dev/null 2>&1 | FileCheck --check-prefix=MISSING %s
  36
  37 # MISSING: warning: cannot find entry symbol no_such_symbol
  38
  39 .globl _start, _label
  40 _start:
  41   ret
  42 _label:
  43   ret