forked from OSchip/llvm-project
86 lines
2.3 KiB
ArmAsm
86 lines
2.3 KiB
ArmAsm
# REQUIRES: x86
|
|
|
|
# Test handling of FDE pc negative relative addressing with DW_EH_PE_sdata4.
|
|
# This situation can arise when .eh_frame is placed after .text.
|
|
|
|
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
|
|
# RUN: echo "SECTIONS { .text : { *(.text) } .eh_frame : { *(.eh_frame) } }" > %t.script
|
|
# RUN: ld.lld --eh-frame-hdr --script %t.script --section-start .text=0x1000 %t.o -o %t
|
|
# RUN: llvm-readobj -S --section-data %t | FileCheck %s
|
|
|
|
# CHECK: Section {
|
|
# CHECK: Index:
|
|
# CHECK: Name: .eh_frame
|
|
# CHECK-NEXT: Type: SHT_PROGBITS
|
|
# CHECK-NEXT: Flags [
|
|
# CHECK-NEXT: SHF_ALLOC
|
|
# CHECK-NEXT: ]
|
|
# CHECK-NEXT: Address: 0x1001
|
|
# CHECK-NEXT: Offset: 0x1001
|
|
# CHECK-NEXT: Size:
|
|
# CHECK-NEXT: Link:
|
|
# CHECK-NEXT: Info:
|
|
# CHECK-NEXT: AddressAlignment:
|
|
# CHECK-NEXT: EntrySize:
|
|
# CHECK-NEXT: SectionData (
|
|
# CHECK-NEXT: 0000: 14000000 00000000 017A5200 01010101
|
|
# CHECK-NEXT: 0010: 1B000000 00000000 0C000000 1C000000
|
|
# CHECK-NEXT: 0020: DFFFFFFF
|
|
# ^
|
|
# DFFFFFFF = _start(0x1000) - PC(.eh_frame(0x1001) + 0x20)
|
|
|
|
# CHECK: Section {
|
|
# CHECK: Index:
|
|
# CHECK: Name: .eh_frame_hdr
|
|
# CHECK-NEXT: Type: SHT_PROGBITS
|
|
# CHECK-NEXT: Flags [
|
|
# CHECK-NEXT: SHF_ALLOC
|
|
# CHECK-NEXT: ]
|
|
# CHECK-NEXT: Address: 0x1030
|
|
# CHECK-NEXT: Offset: 0x1030
|
|
# CHECK-NEXT: Size: 20
|
|
# CHECK-NEXT: Link: 0
|
|
# CHECK-NEXT: Info: 0
|
|
# CHECK-NEXT: AddressAlignment: 4
|
|
# CHECK-NEXT: EntrySize: 0
|
|
# CHECK-NEXT: SectionData (
|
|
# CHECK-NEXT: 0000: 011B033B CDFFFFFF 01000000 D0FFFFFF
|
|
# CHECK-NEXT: 0010: E9FFFFFF
|
|
# Header (always 4 bytes): 011B033B
|
|
# CDFFFFFF = .eh_frame(0x1001) - .eh_frame_hdr(0x1030) - 4
|
|
# 01000000 = 1 = the number of FDE pointers in the table.
|
|
# D0FFFFFF = _start(0x1000) - .eh_frame_hdr(0x1030)
|
|
# E9FFFFFF = FDE(.eh_frame(0x1001) + 0x18) - .eh_frame_hdr(0x1030)
|
|
|
|
.text
|
|
.global _start
|
|
_start:
|
|
nop
|
|
|
|
.section .eh_frame, "a"
|
|
.long 16 # Size
|
|
.long 0x00 # ID
|
|
.byte 0x01 # Version.
|
|
|
|
.byte 0x7A # Augmentation string: "zR"
|
|
.byte 0x52
|
|
.byte 0x00
|
|
|
|
.byte 0x01
|
|
|
|
.byte 0x01 # LEB128
|
|
.byte 0x01 # LEB128
|
|
|
|
.byte 0x01 # LEB128
|
|
.byte 0x1B # DW_EH_PE_pcrel | DW_EH_PE_sdata4
|
|
|
|
.byte 0x00
|
|
.byte 0x00
|
|
.byte 0x00
|
|
|
|
.long 12 # Size
|
|
.long 24 # ID
|
|
fde:
|
|
.long _start - fde
|
|
.long 0
|