xref: /llvm-project/lld/test/ELF/linkerscript/empty-preinit-array-start-stop.test (revision fdd319655359b005889abf40d1d8a54fbd56059e)
1*fdd31965SFangrui Song# REQUIRES: x86
2*fdd31965SFangrui Song# RUN: split-file %s %t
3*fdd31965SFangrui Song# RUN: llvm-mc -filetype=obj -triple=x86_64 %t/t.s -o %t.o
4*fdd31965SFangrui Song
5*fdd31965SFangrui Song## PR52534: https://bugs.llvm.org/show_bug.cgi?id=52534
6*fdd31965SFangrui Song## Check case where .preinit_array would be discarded in the absence of the
7*fdd31965SFangrui Song## start/stop symbols.
8*fdd31965SFangrui Song## Link should succeed without causing an out of range relocation error.
9*fdd31965SFangrui Song# RUN: ld.lld -T %t/discarded.script %t.o -o %t1 --image-base=0x80000000
10*fdd31965SFangrui Song# RUN: llvm-readelf -s %t1 | FileCheck --check-prefixes=CHECK,DISCARDED %s
11*fdd31965SFangrui Song
12*fdd31965SFangrui Song## Check case where .preinit_array is emitted but empty.
13*fdd31965SFangrui Song# RUN: ld.lld -T %t/empty.script %t.o -o %t2
14*fdd31965SFangrui Song# RUN: llvm-readelf -s %t2 | FileCheck --check-prefixes=CHECK,EMPTY %s
15*fdd31965SFangrui Song
16*fdd31965SFangrui Song# CHECK:          [[#%x,ADDR:]] 0 NOTYPE  LOCAL  HIDDEN      [[#]] __preinit_array_start
17*fdd31965SFangrui Song# CHECK-NEXT:     [[#ADDR]]     0 NOTYPE  LOCAL  HIDDEN      [[#]] __preinit_array_end
18*fdd31965SFangrui Song
19*fdd31965SFangrui Song# DISCARDED-NEXT: {{0*}}[[#ADDR-14]] 0 NOTYPE  GLOBAL DEFAULT     [[#]] _start
20*fdd31965SFangrui Song
21*fdd31965SFangrui Song# EMPTY-NOT:      [[#ADDR]]     0 NOTYPE  GLOBAL DEFAULT     [[#]] _start
22*fdd31965SFangrui Song# EMPTY:          [[#ADDR]]     0 NOTYPE  GLOBAL DEFAULT     [[#]] ADDR
23*fdd31965SFangrui Song
24*fdd31965SFangrui Song#--- t.s
25*fdd31965SFangrui Song.global _start
26*fdd31965SFangrui Song_start:
27*fdd31965SFangrui Song movq __preinit_array_start@GOTPCREL(%rip),%rax
28*fdd31965SFangrui Song movq __preinit_array_end@GOTPCREL(%rip),%rax
29*fdd31965SFangrui Song
30*fdd31965SFangrui Song.section .rodata,"a"
31*fdd31965SFangrui Song.byte 0
32*fdd31965SFangrui Song
33*fdd31965SFangrui Song#--- discarded.script
34*fdd31965SFangrui SongSECTIONS {
35*fdd31965SFangrui Song  .rodata : { *(.rodata); }
36*fdd31965SFangrui Song  .text : { *(.text); }
37*fdd31965SFangrui Song  .preinit_array : { *(.preinit_array); }
38*fdd31965SFangrui Song}
39*fdd31965SFangrui Song
40*fdd31965SFangrui Song#--- empty.script
41*fdd31965SFangrui SongSECTIONS {
42*fdd31965SFangrui Song  .text : { *(.text); }
43*fdd31965SFangrui Song  .preinit_array : { ADDR = .; *(.preinit_array); }
44*fdd31965SFangrui Song}
45