derek.holloway
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113 lines
3.7 KiB
Plaintext
113 lines
3.7 KiB
Plaintext
## Check we can parse .eh_frame_hdr with sdata8 encoding (used for large binaries).
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## Header uses eh_frame_ptr_enc=0x1c (pcrel|sdata8) and table_enc=0x3c (datarel|sdata8).
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# RUN: yaml2obj --docnum=1 %s -o %t.sdata8
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# RUN: llvm-readelf --unwind %t.sdata8 | FileCheck %s --check-prefix=SDATA8
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# SDATA8: EHFrameHeader {
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# SDATA8-NEXT: Address: 0x1000
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# SDATA8-NEXT: Offset: 0x78
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# SDATA8-NEXT: Size: 0x30
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# SDATA8-NEXT: Corresponding Section: .eh_frame_hdr
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# SDATA8-NEXT: Header {
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# SDATA8-NEXT: version: 1
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# SDATA8-NEXT: eh_frame_ptr_enc: 0x1c
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# SDATA8-NEXT: fde_count_enc: 0x3
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# SDATA8-NEXT: table_enc: 0x3c
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# SDATA8-NEXT: eh_frame_ptr: 0x1030
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# SDATA8-NEXT: fde_count: 2
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# SDATA8-NEXT: entry 0 {
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# SDATA8-NEXT: initial_location: 0x2000
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# SDATA8-NEXT: address: 0x1048
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# SDATA8-NEXT: }
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# SDATA8-NEXT: entry 1 {
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# SDATA8-NEXT: initial_location: 0x2001
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# SDATA8-NEXT: address: 0x1068
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# SDATA8-NEXT: }
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# SDATA8-NEXT: }
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# SDATA8-NEXT: }
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .eh_frame_hdr
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC ]
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Address: 0x1000
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AddressAlign: 4
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## Header: version=1, eh_frame_ptr_enc=0x1c (pcrel|sdata8),
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## fde_count_enc=0x03 (udata4), table_enc=0x3c (datarel|sdata8)
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## eh_frame_ptr: 0x2c (8 bytes) -> points to 0x1004 + 0x2c = 0x1030
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## fde_count: 2 (4 bytes)
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## entry 0: initial_location=0x1000 (0x2000-0x1000), address=0x48 (0x1048-0x1000)
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## entry 1: initial_location=0x1001 (0x2001-0x1000), address=0x68 (0x1068-0x1000)
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Content: 011c033c2c00000000000000020000000010000000000000480000000000000001100000000000006800000000000000
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ProgramHeaders:
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- Type: PT_GNU_EH_FRAME
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Flags: [ PF_R ]
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VAddr: 0x1000
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PAddr: 0x1000
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MemSize: 0x30
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FileSize: 0x30
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FirstSec: .eh_frame_hdr
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LastSec: .eh_frame_hdr
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## Check we can parse .eh_frame_hdr with mixed encoding: sdata8 for eh_frame_ptr, sdata4 for table.
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# RUN: yaml2obj --docnum=2 %s -o %t.mixed
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# RUN: llvm-readelf --unwind %t.mixed | FileCheck %s --check-prefix=MIXED
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# MIXED: EHFrameHeader {
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# MIXED-NEXT: Address: 0x1000
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# MIXED-NEXT: Offset: 0x78
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# MIXED-NEXT: Size: 0x20
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# MIXED-NEXT: Corresponding Section: .eh_frame_hdr
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# MIXED-NEXT: Header {
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# MIXED-NEXT: version: 1
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# MIXED-NEXT: eh_frame_ptr_enc: 0x1c
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# MIXED-NEXT: fde_count_enc: 0x3
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# MIXED-NEXT: table_enc: 0x3b
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# MIXED-NEXT: eh_frame_ptr: 0x1020
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# MIXED-NEXT: fde_count: 2
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# MIXED-NEXT: entry 0 {
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# MIXED-NEXT: initial_location: 0x2000
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# MIXED-NEXT: address: 0x1030
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# MIXED-NEXT: }
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# MIXED-NEXT: entry 1 {
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# MIXED-NEXT: initial_location: 0x2001
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# MIXED-NEXT: address: 0x1050
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# MIXED-NEXT: }
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# MIXED-NEXT: }
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# MIXED-NEXT: }
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .eh_frame_hdr
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC ]
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Address: 0x1000
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AddressAlign: 4
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## Header: version=1, eh_frame_ptr_enc=0x1c (pcrel|sdata8),
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## fde_count_enc=0x03 (udata4), table_enc=0x3b (datarel|sdata4)
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## eh_frame_ptr: 0x1c (8 bytes) -> points to 0x1004 + 0x1c = 0x1020
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## fde_count: 2 (4 bytes)
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## entry 0: initial_location=0x1000 (4 bytes), address=0x30 (4 bytes)
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## entry 1: initial_location=0x1001 (4 bytes), address=0x50 (4 bytes)
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Content: 011c033b1c000000000000000200000000100000300000000110000050000000
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ProgramHeaders:
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- Type: PT_GNU_EH_FRAME
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Flags: [ PF_R ]
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VAddr: 0x1000
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PAddr: 0x1000
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MemSize: 0x20
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FileSize: 0x20
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FirstSec: .eh_frame_hdr
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LastSec: .eh_frame_hdr
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