| ## In this test we check how the unwind information is dumped with the use of --unwind. |
| |
| ## First, check that both llvm-readobj and llvm-readelf are able to dump a valid unwind information. |
| ## Check that the output is the same for these tools. |
| ## The memory size of the PT_GNU_EH_FRAME equals its file size and they both are equal to 0x3c. |
| ## 0x3c is the size of the .eh_frame_hdr section. |
| # RUN: yaml2obj --docnum=1 %s -DMEMSIZE=0x3c -DFILESIZE=0x3c -o %t1.valid |
| # RUN: llvm-readobj --unwind %t1.valid | FileCheck %s |
| # RUN: llvm-readelf --sections --unwind %t1.valid | FileCheck %s --check-prefixes=SIZE,CHECK |
| |
| ## Validate the size of the .eh_frame_hdr section. |
| # SIZE: [Nr] Name Type Address Off Size |
| # SIZE: [ 2] .eh_frame_hdr PROGBITS 00000000004013c0 0000bc 00003c |
| |
| # CHECK: EHFrameHeader { |
| # CHECK-NEXT: Address: 0x4013c0 |
| # CHECK-NEXT: Offset: 0xbc |
| # CHECK-NEXT: Size: 0x3c |
| # CHECK-NEXT: Corresponding Section: .eh_frame_hdr |
| # CHECK-NEXT: Header { |
| # CHECK-NEXT: version: 1 |
| # CHECK-NEXT: eh_frame_ptr_enc: 0x1b |
| # CHECK-NEXT: fde_count_enc: 0x3 |
| # CHECK-NEXT: table_enc: 0x3b |
| # CHECK-NEXT: eh_frame_ptr: 0x401400 |
| # CHECK-NEXT: fde_count: 6 |
| # CHECK-NEXT: entry 0 { |
| # CHECK-NEXT: initial_location: 0x4004a0 |
| # CHECK-NEXT: address: 0x401448 |
| # CHECK-NEXT: } |
| # CHECK-NEXT: entry 1 { |
| # CHECK-NEXT: initial_location: 0x4004d0 |
| # CHECK-NEXT: address: 0x401418 |
| # CHECK-NEXT: } |
| # CHECK-NEXT: entry 2 { |
| # CHECK-NEXT: initial_location: 0x4005b6 |
| # CHECK-NEXT: address: 0x401470 |
| # CHECK-NEXT: } |
| # CHECK-NEXT: entry 3 { |
| # CHECK-NEXT: initial_location: 0x4005d0 |
| # CHECK-NEXT: address: 0x401490 |
| # CHECK-NEXT: } |
| # CHECK-NEXT: entry 4 { |
| # CHECK-NEXT: initial_location: 0x401250 |
| # CHECK-NEXT: address: 0x4014c0 |
| # CHECK-NEXT: } |
| # CHECK-NEXT: entry 5 { |
| # CHECK-NEXT: initial_location: 0x4012c0 |
| # CHECK-NEXT: address: 0x4014f0 |
| # CHECK-NEXT: } |
| # CHECK-NEXT: } |
| # CHECK-NEXT:} |
| |
| # CHECK: .eh_frame section at offset 0xf8 address 0x401400: |
| # CHECK-NEXT: [0x401400] CIE length=20 |
| # CHECK-NEXT: version: 1 |
| # CHECK-NEXT: augmentation: zR |
| # CHECK-NEXT: code_alignment_factor: 1 |
| # CHECK-NEXT: data_alignment_factor: -8 |
| # CHECK-NEXT: return_address_register: 16 |
| |
| # CHECK: Program: |
| # CHECK-NEXT: DW_CFA_def_cfa: reg7 +8 |
| # CHECK-NEXT: DW_CFA_offset: reg16 -8 |
| # CHECK-NEXT: DW_CFA_undefined: reg16 |
| |
| # CHECK: [0x401418] FDE length=20 cie=[0x401400] |
| # CHECK-NEXT: initial_location: 0x4004d0 |
| # CHECK-NEXT: address_range: 0x2a (end : 0x4004fa) |
| |
| # CHECK: Program: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| |
| # CHECK: [0x401430] CIE length=20 |
| # CHECK-NEXT: version: 1 |
| # CHECK-NEXT: augmentation: zR |
| # CHECK-NEXT: code_alignment_factor: 1 |
| # CHECK-NEXT: data_alignment_factor: -8 |
| # CHECK-NEXT: return_address_register: 16 |
| |
| # CHECK: Program: |
| # CHECK-NEXT: DW_CFA_def_cfa: reg7 +8 |
| # CHECK-NEXT: DW_CFA_offset: reg16 -8 |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| |
| # CHECK: [0x401448] FDE length=36 cie=[0x401430] |
| # CHECK-NEXT: initial_location: 0x4004a0 |
| # CHECK-NEXT: address_range: 0x20 (end : 0x4004c0) |
| |
| # CHECK: Program: |
| # CHECK-NEXT: DW_CFA_def_cfa_offset: +16 |
| # CHECK-NEXT: DW_CFA_advance_loc: 6 |
| # CHECK-NEXT: DW_CFA_def_cfa_offset: +24 |
| # CHECK-NEXT: DW_CFA_advance_loc: 10 |
| # CHECK-NEXT: DW_CFA_def_cfa_expression: DW_OP_breg7 +8, DW_OP_breg16 +0, DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge, DW_OP_lit3, DW_OP_shl, DW_OP_plus |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| |
| # CHECK: [0x401470] FDE length=28 cie=[0x401430] |
| # CHECK-NEXT: initial_location: 0x4005b6 |
| # CHECK-NEXT: address_range: 0x10 (end : 0x4005c6) |
| |
| # CHECK: Program: |
| # CHECK-NEXT: DW_CFA_advance_loc: 1 |
| # CHECK-NEXT: DW_CFA_def_cfa_offset: +16 |
| # CHECK-NEXT: DW_CFA_offset: reg6 -16 |
| # CHECK-NEXT: DW_CFA_advance_loc: 3 |
| # CHECK-NEXT: DW_CFA_def_cfa_register: reg6 |
| # CHECK-NEXT: DW_CFA_advance_loc: 11 |
| # CHECK-NEXT: DW_CFA_def_cfa: reg7 +8 |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| |
| # CHECK: [0x401490] FDE length=44 cie=[0x401430] |
| # CHECK-NEXT: initial_location: 0x4005d0 |
| # CHECK-NEXT: address_range: 0xc7f (end : 0x40124f) |
| |
| # CHECK: Program: |
| # CHECK-NEXT: DW_CFA_advance_loc: 5 |
| # CHECK-NEXT: DW_CFA_def_cfa: reg10 +0 |
| # CHECK-NEXT: DW_CFA_advance_loc: 9 |
| # CHECK-NEXT: DW_CFA_expression: reg6 DW_OP_breg6 +0 |
| # CHECK-NEXT: DW_CFA_advance_loc: 5 |
| # CHECK-NEXT: DW_CFA_def_cfa_expression: DW_OP_breg6 -8, DW_OP_deref |
| # CHECK-NEXT: DW_CFA_advance_loc2: 3174 |
| # CHECK-NEXT: DW_CFA_def_cfa: reg10 +0 |
| # CHECK-NEXT: DW_CFA_advance_loc: 5 |
| # CHECK-NEXT: DW_CFA_def_cfa: reg7 +8 |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| |
| # CHECK: [0x4014c0] FDE length=44 cie=[0x401430] |
| # CHECK-NEXT: initial_location: 0x401250 |
| # CHECK-NEXT: address_range: 0x66 (end : 0x4012b6) |
| |
| # CHECK: Program: |
| # CHECK-NEXT: DW_CFA_advance_loc: 1 |
| # CHECK-NEXT: DW_CFA_def_cfa_offset: +16 |
| # CHECK-NEXT: DW_CFA_offset: reg6 -16 |
| # CHECK-NEXT: DW_CFA_advance_loc: 3 |
| # CHECK-NEXT: DW_CFA_def_cfa_register: reg6 |
| # CHECK-NEXT: DW_CFA_advance_loc: 2 |
| # CHECK-NEXT: DW_CFA_offset: reg15 -24 |
| # CHECK-NEXT: DW_CFA_advance_loc: 5 |
| # CHECK-NEXT: DW_CFA_offset: reg14 -32 |
| # CHECK-NEXT: DW_CFA_advance_loc: 7 |
| # CHECK-NEXT: DW_CFA_offset: reg13 -40 |
| # CHECK-NEXT: DW_CFA_offset: reg12 -48 |
| # CHECK-NEXT: DW_CFA_advance_loc: 8 |
| # CHECK-NEXT: DW_CFA_offset: reg3 -56 |
| # CHECK-NEXT: DW_CFA_advance_loc1: 75 |
| # CHECK-NEXT: DW_CFA_def_cfa: reg7 +8 |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| |
| # CHECK: [0x4014f0] FDE length=20 cie=[0x401430] |
| # CHECK-NEXT: initial_location: 0x4012c0 |
| # CHECK-NEXT: address_range: 0x1 (end : 0x4012c1) |
| |
| # CHECK: Program: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| # CHECK-NEXT: DW_CFA_nop: |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_EXEC |
| Machine: EM_X86_64 |
| Entry: 0x0000000000400000 |
| Sections: |
| - Name: .text |
| Type: SHT_PROGBITS |
| Flags: [ SHF_ALLOC, SHF_EXECINSTR ] |
| Address: 0x0000000000400000 |
| AddressAlign: 16 |
| Content: 50C704240020400031C05AC3 |
| - Name: .eh_frame_hdr |
| Type: SHT_PROGBITS |
| Flags: [ SHF_ALLOC ] |
| Address: 0x00000000004013c0 |
| AddressAlign: 4 |
| Content: 011B033B3C00000006000000E0F0FFFF8800000010F1FFFF58000000F6F1FFFFB000000010F2FFFFD000000090FEFFFF0001000000FFFFFF30010000 |
| - Name: .eh_frame |
| Type: SHT_PROGBITS |
| Flags: [ SHF_ALLOC ] |
| Address: 0x0000000000401400 |
| AddressAlign: 8 |
| Content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|
| Symbols: |
| - Name: myfunc |
| Type: STT_FUNC |
| Section: .text |
| Value: 0x0000000000400000 |
| Binding: STB_GLOBAL |
| ProgramHeaders: |
| - Type: PT_LOAD |
| Flags: [ PF_X, PF_R ] |
| VAddr: 0x00400000 |
| PAddr: 0x00400000 |
| FirstSec: .text |
| LastSec: .text |
| - Type: PT_GNU_EH_FRAME |
| Flags: [ PF_X, PF_R ] |
| VAddr: 0x004013C0 |
| PAddr: 0x004013C0 |
| MemSize: [[MEMSIZE]] |
| FileSize: [[FILESIZE]] |
| FirstSec: .eh_frame_hdr |
| LastSec: .eh_frame_hdr |
| |
| ## Document we report a error when the memory size of the PT_GNU_EH_FRAME does not match its file size. |
| ## TODO: we want to report a warning and continue dumping instead. |
| # RUN: yaml2obj --docnum=1 %s -DMEMSIZE=0x3b -DFILESIZE=0x3c -o %t1.size.mismatch |
| # RUN: not llvm-readobj --unwind %t1.size.mismatch 2>&1 | \ |
| # RUN: FileCheck -DFILE=%t1.size.mismatch %s --check-prefix=SIZE-MISMATCH |
| # RUN: not llvm-readelf --unwind %t1.size.mismatch 2>&1 | \ |
| # RUN: FileCheck -DFILE=%t1.size.mismatch %s --check-prefix=SIZE-MISMATCH |
| |
| # SIZE-MISMATCH: error: '[[FILE]]': p_memsz does not match p_filesz for GNU_EH_FRAME |
| |
| ## Check we partially dump the unwind information when the PT_GNU_EH_FRAME segment |
| ## points to truncated data. |
| # RUN: yaml2obj --docnum=1 %s -DMEMSIZE=0x1 -DFILESIZE=0x1 -o %t1.truncated |
| # RUN: not llvm-readobj --unwind %t1.truncated 2>&1 | FileCheck -DFILE=%t1.truncated %s --check-prefix=TRUNCATED |
| # RUN: not llvm-readelf --unwind %t1.truncated 2>&1 | FileCheck -DFILE=%t1.truncated %s --check-prefix=TRUNCATED |
| |
| # TRUNCATED: EHFrameHeader { |
| # TRUNCATED-NEXT: Address: 0x4013c0 |
| # TRUNCATED-NEXT: Offset: 0xbc |
| # TRUNCATED-NEXT: Size: 0x1 |
| # TRUNCATED-NEXT: Corresponding Section: .eh_frame_hdr |
| # TRUNCATED-NEXT: Header { |
| # TRUNCATED-NEXT: version: 1 |
| # TRUNCATED-NEXT: eh_frame_ptr_enc: 0x0 |
| # TRUNCATED-NEXT: error: '[[FILE]]': unexpected encoding eh_frame_ptr_enc |
| |
| ## Check we report an error when the tool is unable to parse .eh_frame section. |
| # RUN: yaml2obj --docnum=2 %s -o %t2.exe |
| # RUN: not llvm-readobj --unwind %t2.exe 2>&1 | FileCheck %s -DFILE=%t2.exe --check-prefix=NO-CIE-ERR |
| |
| # NO-CIE-ERR: .eh_frame section at offset 0x40 address 0x0: |
| # NO-CIE-ERR-NEXT: error: '[[FILE]]': parsing FDE data at 0x0 failed due to missing CIE |
| # NO-CIE-ERR-NOT: {{.}} |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_REL |
| Machine: EM_X86_64 |
| Sections: |
| - Name: .eh_frame |
| Type: SHT_X86_64_UNWIND |
| ## The content is generated from the following code. It has no CIE. |
| ## See the DebugInfoX86/eh-frame-cie-id.s test case for more history. |
| ## .section .eh_frame,"a",@unwind |
| ## .long .Lend - .LCIEptr # Length |
| ## .LCIEptr: |
| ## .long 0xffffffff # CIE pointer |
| ## .quad 0x1111abcd # Initial location |
| ## .quad 0x00010000 # Address range |
| ## .Lend: |
| Content: 14000000FFFFFFFFCDAB1111000000000000010000000000 |
| |
| ## Check we report a error when the .eh_frame section contains truncated data. |
| # RUN: yaml2obj --docnum=3 %s -o %t3.exe |
| # RUN: not llvm-readobj --unwind %t3.exe 2>&1 | FileCheck %s -DFILE=%t3.exe --check-prefix=TRUNCATED-ERR |
| |
| # TRUNCATED-ERR: .eh_frame section at offset 0x34 address 0x0: |
| # TRUNCATED-ERR-NEXT: error: '[[FILE]]': unexpected end of data at offset 0x4 |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS32 |
| Data: ELFDATA2LSB |
| Type: ET_EXEC |
| Sections: |
| - Name: .eh_frame |
| Type: SHT_PROGBITS |
| ## Length is set to 0xFF, though the actual section length is 4. |
| Content: "FF000000" |
| |
| ## Check we report an error when we can't read the content of the .eh_frame section. |
| |
| ## Case A: test we report an error when the p_offset of the PT_GNU_EH_FRAME |
| ## is invalid (goes past the end of the file). |
| |
| # RUN: yaml2obj --docnum=4 %s -o %t4 -DOFFSET=0xffff0000 -DSIZE=0x1 -DBITS=32 |
| # RUN: not llvm-readobj --unwind %t4 2>&1 \ |
| # RUN: | FileCheck %s -DFILE=%t4 --check-prefix=BROKEN-CONTENT -DOFFSET=0xffff0000 -DSIZE=0x1 |
| |
| # RUN: yaml2obj --docnum=4 %s -o %t5 -DOFFSET=0x1 -DSIZE=0xffff0000 -DBITS=32 |
| # RUN: not llvm-readobj --unwind %t5 2>&1 \ |
| # RUN: | FileCheck %s -DFILE=%t5 --check-prefix=BROKEN-CONTENT -DOFFSET=0x1 -DSIZE=0xffff0000 |
| |
| # BROKEN-CONTENT: EHFrameHeader { |
| # BROKEN-CONTENT-NEXT: Address: 0x0 |
| # BROKEN-CONTENT-NEXT: Offset: [[OFFSET]] |
| # BROKEN-CONTENT-NEXT: Size: [[SIZE]] |
| # BROKEN-CONTENT-NEXT: Corresponding Section: |
| # BROKEN-CONTENT-NEXT: error: '[[FILE]]': program header [index 0] has a p_offset ([[OFFSET]]) + p_filesz ([[SIZE]]) that is greater than the file size (0xe0) |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS[[BITS]] |
| Data: ELFDATA2LSB |
| Type: ET_EXEC |
| ProgramHeaders: |
| - Type: PT_GNU_EH_FRAME |
| MemSize: [[SIZE]] |
| FileSize: [[SIZE]] |
| Offset: [[OFFSET]] |
| |
| ## Case B: test we report an error when the file size of the PT_GNU_EH_FRAME |
| ## is invalid (goes past the end of the file). |
| # RUN: yaml2obj --docnum=4 %s -o %t6 -DOFFSET=0x100 -DSIZE=0xffff0000 -DBITS=32 |
| # RUN: not llvm-readobj --unwind %t6 2>&1 \ |
| # RUN: | FileCheck %s -DFILE=%t6 --check-prefix=BROKEN-CONTENT -DOFFSET=0x100 -DSIZE=0xffff0000 |
| |
| ## Case C: test we report an error when the offset + the file size of the PT_GNU_EH_FRAME is so large a |
| ## value that it overflows the platform address size type. |
| |
| # RUN: yaml2obj --docnum=4 %s -o %t7 -DOFFSET=0x1 -DSIZE=0xffffffff -DBITS=32 |
| # RUN: not llvm-readobj --unwind %t7 2>&1 | FileCheck %s -DFILE=%t7 --check-prefix=BROKEN-CONTENT2 -DOFFSET=0x1 -DSIZE=0xffffffff |
| |
| # RUN: yaml2obj --docnum=4 %s -o %t8 -DOFFSET=0xffffffff -DSIZE=0x1 -DBITS=32 |
| # RUN: not llvm-readobj --unwind %t8 2>&1 | FileCheck %s -DFILE=%t8 --check-prefix=BROKEN-CONTENT2 -DOFFSET=0xffffffff -DSIZE=0x1 |
| |
| # RUN: yaml2obj --docnum=4 %s -o %t9 -DOFFSET=0x1 -DSIZE=0xffffffffffffffff -DBITS=64 |
| # RUN: not llvm-readelf --unwind %t9 2>&1 | FileCheck %s -DFILE=%t9 --check-prefix=BROKEN-CONTENT2 -DOFFSET=0x1 -DSIZE=0xffffffffffffffff |
| |
| # RUN: yaml2obj --docnum=4 %s -o %t10 -DOFFSET=0xffffffffffffffff -DSIZE=0x1 -DBITS=64 |
| # RUN: not llvm-readelf --unwind %t10 2>&1 | FileCheck %s -DFILE=%t10 --check-prefix=BROKEN-CONTENT2 -DOFFSET=0xffffffffffffffff -DSIZE=0x1 |
| |
| # BROKEN-CONTENT2: EHFrameHeader { |
| # BROKEN-CONTENT2-NEXT: Address: 0x0 |
| # BROKEN-CONTENT2-NEXT: Offset: [[OFFSET]] |
| # BROKEN-CONTENT2-NEXT: Size: [[SIZE]] |
| # BROKEN-CONTENT2-NEXT: Corresponding Section: |
| # BROKEN-CONTENT2-NEXT: error: '[[FILE]]': program header [index 0] has a p_offset ([[OFFSET]]) + p_filesz ([[SIZE]]) that cannot be represented |
