Mercurial > hg > CbC > CbC_llvm
diff lld/test/ELF/eh-frame-negative-pcrel-sdata8.s @ 150:1d019706d866
LLVM10
author | anatofuz |
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date | Thu, 13 Feb 2020 15:10:13 +0900 |
parents | |
children | 0572611fdcc8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lld/test/ELF/eh-frame-negative-pcrel-sdata8.s Thu Feb 13 15:10:13 2020 +0900 @@ -0,0 +1,85 @@ +# REQUIRES: x86 + +# Test handling of FDE pc negative relative addressing with DW_EH_PE_sdata8. +# 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: 1C000000 00000000 14000000 1C000000 +# CHECK-NEXT: 0020: DFFFFFFF FFFFFFFF +# ^ +# DFFFFFFF FFFFFFFF = _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: 0x1038 +# CHECK-NEXT: Offset: 0x1038 +# 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 C5FFFFFF 01000000 C8FFFFFF +# CHECK-NEXT: 0010: E1FFFFFF +# Header (always 4 bytes): 011B033B +# C5FFFFFF = .eh_frame(0x1001) - .eh_frame_hdr(0x1038) - 4 +# 01000000 = 1 = the number of FDE pointers in the table. +# C8FFFFFF = _start(0x1000) - .eh_frame_hdr(0x1038) +# E1FFFFFF = FDE(.eh_frame(0x1001) + 0x18) - .eh_frame_hdr(0x1038) + +.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 0x1C # DW_EH_PE_pcrel | DW_EH_PE_sdata8 + + .byte 0x00 + .byte 0x00 + .byte 0x00 + + .long 16 # Size + .long 24 # ID +fde: + .quad _start - fde + .long 0