eh-frame-hdr.s
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// REQUIRES: x86
// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
// RUN: ld.lld %t.o -o %t
// RUN: llvm-readobj --file-headers -S --section-data -l --symbols %t \
// RUN: | FileCheck %s --check-prefix=NOHDR
// RUN: ld.lld -eh-frame-hdr -no-eh-frame-hdr %t.o -o %t
// RUN: llvm-readobj --file-headers -S --section-data -l --symbols %t \
// RUN: | FileCheck %s --check-prefix=NOHDR
// RUN: ld.lld --eh-frame-hdr %t.o -o %t
// RUN: llvm-readobj --file-headers -S --section-data -l --symbols %t \
// RUN: | FileCheck %s --check-prefix=HDR
// RUN: llvm-objdump -d %t | FileCheck %s --check-prefix=HDRDISASM
.section foo,"ax",@progbits
.cfi_startproc
nop
.cfi_endproc
.section bar,"ax",@progbits
.cfi_startproc
nop
.cfi_endproc
.section dah,"ax",@progbits
.cfi_startproc
nop
.cfi_endproc
.text
.globl _start
_start:
// NOHDR: Sections [
// NOHDR-NOT: Name: .eh_frame_hdr
// NOHDR: ProgramHeaders [
// NOHDR-NOT: PT_GNU_EH_FRAME
// HDRDISASM: Disassembly of section foo:
// HDRDISASM-EMPTY:
// HDRDISASM-NEXT: <foo>:
// HDRDISASM-NEXT: 2011e4: 90 nop
// HDRDISASM-EMPTY:
// HDRDISASM-NEXT: Disassembly of section bar:
// HDRDISASM-EMPTY:
// HDRDISASM-NEXT: <bar>:
// HDRDISASM-NEXT: 2011e5: 90 nop
// HDRDISASM-EMPTY:
// HDRDISASM-NEXT: Disassembly of section dah:
// HDRDISASM-EMPTY:
// HDRDISASM-NEXT: <dah>:
// HDRDISASM-NEXT: 2011e6: 90 nop
// HDR: Section {
// HDR: Index:
// HDR: Name: .eh_frame_hdr
// HDR-NEXT: Type: SHT_PROGBITS
// HDR-NEXT: Flags [
// HDR-NEXT: SHF_ALLOC
// HDR-NEXT: ]
// HDR-NEXT: Address: 0x200158
// HDR-NEXT: Offset: 0x158
// HDR-NEXT: Size: 36
// HDR-NEXT: Link: 0
// HDR-NEXT: Info: 0
// HDR-NEXT: AddressAlignment: 4
// HDR-NEXT: EntrySize: 0
// HDR-NEXT: SectionData (
// HDR-NEXT: 0000: 011B033B 24000000 03000000 8C100000
// HDR-NEXT: 0010: 40000000 8D100000 58000000 8E100000
// HDR-NEXT: 0020: 70000000
// HDR-NEXT: )
// Header (always 4 bytes): 0x011B033B
// 24000000 = .eh_frame(0x200180) - .eh_frame_hdr(0x200158) - 4
// 03000000 = 3 = the number of FDE pointers in the table.
// Entry(1): 8C100000 40000000
// 480E0000 = 0x2011e4 - .eh_frame_hdr(0x200158) = 0x108C
// 40000000 = address of FDE(1) - .eh_frame_hdr(0x200158) =
// = .eh_frame(0x200180) + 24 - 0x200158 = 0x40
// Entry(2): 8D100000 58000000
// A90E0000 = 0x2011e5 - .eh_frame_hdr(0x200158) = 0x108D
// 58000000 = address of FDE(2) - .eh_frame_hdr(0x200158) =
// = .eh_frame(0x200180) + 24 + 24 - 0x200158 = 0x58
// Entry(3): 8E100000 70000000
// AA0E0000 = 0x2011e6 - .eh_frame_hdr(0x200158) = 0x108E
// 70000000 = address of FDE(3) - .eh_frame_hdr(0x200158) =
// = .eh_frame(0x200180) + 24 + 24 + 24 - 0x200158 = 0x70
// HDR-NEXT: }
// HDR-NEXT: Section {
// HDR-NEXT: Index:
// HDR-NEXT: Name: .eh_frame
// HDR-NEXT: Type: SHT_PROGBITS
// HDR-NEXT: Flags [
// HDR-NEXT: SHF_ALLOC
// HDR-NEXT: ]
// HDR-NEXT: Address: 0x200180
// HDR-NEXT: Offset: 0x180
// HDR-NEXT: Size: 100
// HDR-NEXT: Link: 0
// HDR-NEXT: Info: 0
// HDR-NEXT: AddressAlignment: 8
// HDR-NEXT: EntrySize: 0
// HDR-NEXT: SectionData (
// HDR-NEXT: 0000: 14000000 00000000 017A5200 01781001
// HDR-NEXT: 0010: 1B0C0708 90010000 14000000 1C000000
// HDR-NEXT: 0020: 44100000 01000000 00000000 00000000
// HDR-NEXT: 0030: 14000000 34000000 2D100000 01000000
// HDR-NEXT: 0040: 00000000 00000000 14000000 4C000000
// HDR-NEXT: 0050: 16100000 01000000 00000000 00000000
// HDR-NEXT: 0060: 00000000
// HDR-NEXT: )
// CIE: 14000000 00000000 017A5200 01781001 1B0C0708 90010000
// FDE(1): 14000000 1C000000 600E0000 01000000 00000000 00000000
// address of data (starts with 0x600E0000) = 0x200180 + 0x0020 = 0x2001A0
// The starting address to which this FDE applies = 0xE60 + 0x2001A0 = 0x201000
// The number of bytes after the start address to which this FDE applies = 0x01000000 = 1
// FDE(2): 14000000 34000000 490E0000 01000000 00000000 00000000
// address of data (starts with 0x490E0000) = 0x200180 + 0x0038 = 0x2001B8
// The starting address to which this FDE applies = 0xE49 + 0x2001B8 = 0x201001
// The number of bytes after the start address to which this FDE applies = 0x01000000 = 1
// FDE(3): 14000000 4C000000 320E0000 01000000 00000000 00000000
// address of data (starts with 0x320E0000) = 0x200180 + 0x0050 = 0x2001D0
// The starting address to which this FDE applies = 0xE5A + 0x2001D0 = 0x201002
// The number of bytes after the start address to which this FDE applies = 0x01000000 = 1
// HDR-NEXT: }
// HDR: ProgramHeaders [
// HDR: ProgramHeader {
// HDR: Type: PT_GNU_EH_FRAME
// HDR-NEXT: Offset: 0x158
// HDR-NEXT: VirtualAddress: 0x200158
// HDR-NEXT: PhysicalAddress: 0x200158
// HDR-NEXT: FileSize: 36
// HDR-NEXT: MemSize: 36
// HDR-NEXT: Flags [
// HDR-NEXT: PF_R
// HDR-NEXT: ]
// HDR-NEXT: Alignment: 4
// HDR-NEXT: }