| // 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 -program-headers -symbols %t | FileCheck %s --check-prefix=NOHDR |
| // RUN: ld.lld --eh-frame-hdr %t.o -o %t |
| // RUN: llvm-readobj -file-headers -s -section-data -program-headers -symbols %t | 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-NEXT: foo: |
| //HDRDISASM-NEXT: 11000: 90 nop |
| //HDRDISASM-NEXT: Disassembly of section bar: |
| //HDRDISASM-NEXT: bar: |
| //HDRDISASM-NEXT: 11001: 90 nop |
| //HDRDISASM-NEXT: Disassembly of section dah: |
| //HDRDISASM-NEXT: dah: |
| //HDRDISASM-NEXT: 11002: 90 nop |
| |
| // HDR: Sections [ |
| // HDR: Section { |
| // HDR: Index: 1 |
| // HDR-NEXT: Name: .eh_frame |
| // HDR-NEXT: Type: SHT_PROGBITS |
| // HDR-NEXT: Flags [ |
| // HDR-NEXT: SHF_ALLOC |
| // HDR-NEXT: ] |
| // HDR-NEXT: Address: 0x10158 |
| // HDR-NEXT: Offset: 0x158 |
| // HDR-NEXT: Size: 96 |
| // 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: 880E0000 01000000 00000000 00000000 | |
| // HDR-NEXT: 0030: 14000000 34000000 710E0000 01000000 | |
| // HDR-NEXT: 0040: 00000000 00000000 14000000 4C000000 | |
| // HDR-NEXT: 0050: 5A0E0000 01000000 00000000 00000000 | |
| // CIE: 14000000 00000000 017A5200 01781001 1B0C0708 90010000 |
| // FDE(1): 14000000 1C000000 880E0000 01000000 00000000 00000000 |
| // address of data (starts with 0x880E0000) = 0x10158 + 0x0020 = 0x10178 |
| // The starting address to which this FDE applies = 0xE88 + 0x10178 = 0x11000 |
| // The number of bytes after the start address to which this FDE applies = 0x01000000 = 1 |
| // FDE(2): 14000000 34000000 710E0000 01000000 00000000 00000000 |
| // address of data (starts with 0x710E0000) = 0x10158 + 0x0038 = 0x10190 |
| // The starting address to which this FDE applies = 0xE71 + 0x10190 = 0x11001 |
| // The number of bytes after the start address to which this FDE applies = 0x01000000 = 1 |
| // FDE(3): 14000000 4C000000 5A0E0000 01000000 00000000 00000000 |
| // address of data (starts with 0x5A0E0000) = 0x10158 + 0x0050 = 0x101A8 |
| // The starting address to which this FDE applies = 0xE5A + 0x101A8 = 0x11002 |
| // The number of bytes after the start address to which this FDE applies = 0x01000000 = 1 |
| // HDR-NEXT: ) |
| // HDR-NEXT: } |
| // HDR-NEXT: Section { |
| // HDR-NEXT: Index: 2 |
| // HDR-NEXT: Name: .eh_frame_hdr |
| // HDR-NEXT: Type: SHT_PROGBITS |
| // HDR-NEXT: Flags [ |
| // HDR-NEXT: SHF_ALLOC |
| // HDR-NEXT: ] |
| // HDR-NEXT: Address: 0x101B8 |
| // HDR-NEXT: Offset: 0x1B8 |
| // HDR-NEXT: Size: 36 |
| // HDR-NEXT: Link: 0 |
| // HDR-NEXT: Info: 0 |
| // HDR-NEXT: AddressAlignment: 0 |
| // HDR-NEXT: EntrySize: 0 |
| // HDR-NEXT: SectionData ( |
| // HDR-NEXT: 0000: 011B033B 9CFFFFFF 03000000 480E0000 | |
| // HDR-NEXT: 0010: B8FFFFFF 490E0000 D0FFFFFF 4A0E0000 | |
| // HDR-NEXT: 0020: E8FFFFFF | |
| // Header (always 4 bytes): 0x011B033B |
| // 9CFFFFFF = .eh_frame(0x10158) - .eh_frame_hdr(0x101B8) - 4 |
| // 03000000 = 3 = the number of FDE pointers in the table. |
| // Entry(1): 480E0000 B8FFFFFF |
| // 480E0000 = 0x11000 - .eh_frame_hdr(0x101B8) = 0xE48 |
| // B8FFFFFF = address of FDE(1) - .eh_frame_hdr(0x101B8) = |
| // = .eh_frame(0x10158) + 24 - 0x101B8 = 0xFFFFFFB8 |
| // Entry(2): 490E0000 D0FFFFFF |
| // 490E0000 = 0x11001 - .eh_frame_hdr(0x101B8) = 0xE49 |
| // D0FFFFFF = address of FDE(2) - .eh_frame_hdr(0x101B8) = |
| // = .eh_frame(0x10158) + 24 + 24 - 0x101B8 = 0xFFFFFFD0 |
| // Entry(3): 4A0E0000 E8FFFFFF |
| // 4A0E0000 = 0x11002 - .eh_frame_hdr(0x101B8) = 0xE4A |
| // E8FFFFFF = address of FDE(2) - .eh_frame_hdr(0x101B8) = |
| // = .eh_frame(0x10158) + 24 + 24 - 0x101B8 = 0xFFFFFFE8 |
| // HDR-NEXT: ) |
| // HDR-NEXT: } |
| // HDR: ProgramHeaders [ |
| // HDR: ProgramHeader { |
| // HDR: Type: PT_GNU_EH_FRAME |
| // HDR-NEXT: Offset: 0x1B8 |
| // HDR-NEXT: VirtualAddress: 0x101B8 |
| // HDR-NEXT: PhysicalAddress: 0x101B8 |
| // HDR-NEXT: FileSize: 36 |
| // HDR-NEXT: MemSize: 36 |
| // HDR-NEXT: Flags [ |
| // HDR-NEXT: PF_R |
| // HDR-NEXT: ] |
| // HDR-NEXT: Alignment: 1 |
| // HDR-NEXT: } |
