1# REQUIRES: x86
2
3# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
4# RUN: ld.lld --eh-frame-hdr --section-start .text=0x1000 %t.o -o %t
5# RUN: llvm-readobj -S --section-data %t | FileCheck %s
6
7## Check we are able to handle DW_EH_PE_absptr encoding.
8
9# CHECK:      Section {
10# CHECK:        Index:
11# CHECK:        Name: .eh_frame_hdr
12# CHECK-NEXT:   Type: SHT_PROGBITS
13# CHECK-NEXT:   Flags [
14# CHECK-NEXT:     SHF_ALLOC
15# CHECK-NEXT:   ]
16# CHECK-NEXT:   Address: 0x2004
17# CHECK-NEXT:   Offset: 0x1004
18# CHECK-NEXT:   Size: 20
19# CHECK-NEXT:   Link: 0
20# CHECK-NEXT:   Info: 0
21# CHECK-NEXT:   AddressAlignment: 4
22# CHECK-NEXT:   EntrySize: 0
23# CHECK-NEXT:   SectionData (
24# CHECK-NEXT:     0000: 011B033B 10000000 01000000 30F2FFFF
25# CHECK-NEXT:     0010: 24000000
26# Header (always 4 bytes): 011B033B
27#    10000000 = .eh_frame(0x2018) - .eh_frame_hdr(0x2004) - 4
28#    01000000 = 1 = the number of FDE pointers in the table.
29# 30F2FFFF = foo(0x1000) - 0x234(addend) - .eh_frame_hdr(0x2004)
30
31# CHECK:      Section {
32# CHECK:        Index:
33# CHECK:        Name: .eh_frame
34# CHECK-NEXT:   Type: SHT_PROGBITS
35# CHECK-NEXT:   Flags [
36# CHECK-NEXT:     SHF_ALLOC
37# CHECK-NEXT:   ]
38# CHECK-NEXT:   Address: 0x2018
39# CHECK-NEXT:   Offset: 0x1018
40# CHECK-NEXT:   Size:
41# CHECK-NEXT:   Link:
42# CHECK-NEXT:   Info:
43# CHECK-NEXT:   AddressAlignment:
44# CHECK-NEXT:   EntrySize:
45# CHECK-NEXT:   SectionData (
46# CHECK-NEXT:     0000: 0C000000 00000000 01520001 010100FF
47# CHECK-NEXT:     0010: 0C000000 14000000 34120000 00000000
48#                                           ^
49#                                           ---> ADDR(foo) + 0x234 = 0x1234
50.text
51.global foo
52foo:
53 nop
54
55.section .eh_frame,"a",@unwind
56  .long 12   # Size
57  .long 0x00 # ID
58  .byte 0x01 # Version.
59
60  .byte 0x52 # Augmentation string: 'R','\0'
61  .byte 0x00
62
63  .byte 0x01
64
65  .byte 0x01 # LEB128
66  .byte 0x01 # LEB128
67
68  .byte 0x00 # DW_EH_PE_absptr
69
70  .byte 0xFF
71
72  .long 12  # Size
73  .long 0x14 # ID
74  .quad foo + 0x234
75