1# REQUIRES: x86 2 3# Test handling of FDE pc negative relative addressing with DW_EH_PE_sdata4. 4# This situation can arise when .eh_frame is placed after .text. 5 6# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o 7# RUN: echo "SECTIONS { .text : { *(.text) } .eh_frame : { *(.eh_frame) } }" > %t.script 8# RUN: ld.lld --eh-frame-hdr --script %t.script --section-start .text=0x1000 %t.o -o %t 9# RUN: llvm-readobj -S --section-data %t | FileCheck %s 10 11# CHECK: Section { 12# CHECK: Index: 13# CHECK: Name: .eh_frame 14# CHECK-NEXT: Type: SHT_PROGBITS 15# CHECK-NEXT: Flags [ 16# CHECK-NEXT: SHF_ALLOC 17# CHECK-NEXT: ] 18# CHECK-NEXT: Address: 0x1001 19# CHECK-NEXT: Offset: 0x1001 20# CHECK-NEXT: Size: 21# CHECK-NEXT: Link: 22# CHECK-NEXT: Info: 23# CHECK-NEXT: AddressAlignment: 24# CHECK-NEXT: EntrySize: 25# CHECK-NEXT: SectionData ( 26# CHECK-NEXT: 0000: 10000000 00000000 017A5200 01010101 27# CHECK-NEXT: 0010: 1B000000 0C000000 18000000 E3FFFFFF 28# CHECK-NEXT: 0020: 00000000 00000000 29 30# CHECK: Section { 31# CHECK: Index: 32# CHECK: Name: .eh_frame_hdr 33# CHECK-NEXT: Type: SHT_PROGBITS 34# CHECK-NEXT: Flags [ 35# CHECK-NEXT: SHF_ALLOC 36# CHECK-NEXT: ] 37# CHECK-NEXT: Address: 0x102C 38# CHECK-NEXT: Offset: 0x102C 39# CHECK-NEXT: Size: 20 40# CHECK-NEXT: Link: 0 41# CHECK-NEXT: Info: 0 42# CHECK-NEXT: AddressAlignment: 4 43# CHECK-NEXT: EntrySize: 0 44# CHECK-NEXT: SectionData ( 45# CHECK-NEXT: 0000: 011B033B D1FFFFFF 01000000 D4FFFFFF 46# CHECK-NEXT: 0010: E9FFFFFF 47# Header (always 4 bytes): 011B033B 48# D1FFFFFF = .eh_frame(0x1001) - .eh_frame_hdr(0x102C) - 4 49# 01000000 = 1 = the number of FDE pointers in the table. 50# D4FFFFFF = _start(0x1000) - .eh_frame_hdr(0x102C) 51# E9FFFFFF = FDE(.eh_frame(0x1001) + 0x18) - .eh_frame_hdr(0x102C) 52 53.text 54.global _start 55_start: 56 nop 57 58.section .eh_frame,"a",@unwind 59 .long 16 # Size 60 .long 0x00 # ID 61 .byte 0x01 # Version. 62 63 .byte 0x7A # Augmentation string: "zR" 64 .byte 0x52 65 .byte 0x00 66 67 .byte 0x01 68 69 .byte 0x01 # LEB128 70 .byte 0x01 # LEB128 71 72 .byte 0x01 # LEB128 73 .byte 0x1B # DW_EH_PE_pcrel | DW_EH_PE_sdata4 74 75 .byte 0x00 76 .byte 0x00 77 .byte 0x00 78 79 .long 12 # Size 80 .long 24 # ID 81fde: 82 .long _start - fde 83 .long 0 84