maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[BOLT] Support PLT sections with variable entry sizes 

Summary:
The linker can generate 8- or 16-byte entries in .plt.got and .plt.sec
sections. On X86, the main differentiator is the presence of endbr64
instruction at the beginning of the entry. Detect the instruction and
adjust the size accordingly.

(cherry picked from FBD29847639)
This commit is contained in:
Maksim Panchenko 2021-07-14 01:35:34 -07:00
parent c33f08e7df
commit 89a2e16037
8 changed files with 2283 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
bolt/src/MCPlusBuilder.h
View File

@ -479,6 +479,12 @@ public:
return false;
}
/// Return true if the instruction is used to terminate an indirect branch.
virtual bool isTerminateBranch(const MCInst &Inst) const {
llvm_unreachable("not implemented");
return false;
}
/// Return the width, in bytes, of the memory access performed by \p Inst, if
/// this is a pop instruction. Return zero otherwise.
virtual int getPopSize(const MCInst &Inst) const {

5
bolt/src/RewriteInstance.cpp
View File

@ -1362,6 +1362,11 @@ void RewriteInstance::disassemblePLT() {
exit(1);
}
// Check if the entry size needs adjustment.
if (EntryOffset == 0 && BC->MIB->isTerminateBranch(Instruction) &&
EntrySize == 8)
EntrySize = 16;
if (BC->MIB->isIndirectBranch(Instruction))
break;

2
bolt/src/RewriteInstance.h
View File

@ -458,7 +458,7 @@ private:
const PLTSectionInfo X86_64_PLTSections[4] = {
{ ".plt", 16 },
{ ".plt.got", 8 },
{ ".plt.sec", 16 },
{ ".plt.sec", 8 },
{ nullptr, 0 }
};

4
bolt/src/Target/X86/X86MCPlusBuilder.cpp
View File

@ -472,6 +472,10 @@ public:
return getPopSize(Inst) == 0 ? false : true;
}
bool isTerminateBranch(const MCInst &Inst) const override {
return Inst.getOpcode() == X86::ENDBR32 || Inst.getOpcode() == X86::ENDBR64;
}
int getPopSize(const MCInst &Inst) const override {
switch (Inst.getOpcode()) {
case X86::POP16r:

819
bolt/test/X86/Inputs/plt-got-sec.yaml Normal file
View File

@ -0,0 +1,819 @@
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
Entry: 0x401050
ProgramHeaders:
- Type: PT_PHDR
Flags: [ PF_R ]
VAddr: 0x400040
Align: 0x8
- Type: PT_INTERP
Flags: [ PF_R ]
FirstSec: .interp
LastSec: .interp
VAddr: 0x400318
- Type: PT_LOAD
Flags: [ PF_R ]
FirstSec: .interp
LastSec: .rela.plt
VAddr: 0x400000
Align: 0x1000
- Type: PT_LOAD
Flags: [ PF_X, PF_R ]
FirstSec: .init
LastSec: .fini
VAddr: 0x401000
Align: 0x1000
- Type: PT_LOAD
Flags: [ PF_R ]
FirstSec: .rodata
LastSec: .eh_frame
VAddr: 0x402000
Align: 0x1000
- Type: PT_LOAD
Flags: [ PF_W, PF_R ]
FirstSec: .init_array
LastSec: .bss
VAddr: 0x403E10
Align: 0x1000
- Type: PT_DYNAMIC
Flags: [ PF_W, PF_R ]
FirstSec: .dynamic
LastSec: .dynamic
VAddr: 0x403E20
Align: 0x8
- Type: PT_NOTE
Flags: [ PF_R ]
FirstSec: .note.gnu.property
LastSec: .note.gnu.property
VAddr: 0x400338
Align: 0x8
- Type: PT_NOTE
Flags: [ PF_R ]
FirstSec: .note.gnu.build-id
LastSec: .note.ABI-tag
VAddr: 0x400358
Align: 0x4
- Type: PT_GNU_PROPERTY
Flags: [ PF_R ]
FirstSec: .note.gnu.property
LastSec: .note.gnu.property
VAddr: 0x400338
Align: 0x8
- Type: PT_GNU_EH_FRAME
Flags: [ PF_R ]
FirstSec: .eh_frame_hdr
LastSec: .eh_frame_hdr
VAddr: 0x402014
Align: 0x4
- Type: PT_GNU_STACK
Flags: [ PF_W, PF_R ]
Align: 0x10
- Type: PT_GNU_RELRO
Flags: [ PF_R ]
FirstSec: .init_array
LastSec: .got
VAddr: 0x403E10
Sections:
- Name: .interp
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC ]
Address: 0x400318
AddressAlign: 0x1
Content: 2F6C696236342F6C642D6C696E75782D7838362D36342E736F2E3200
- Name: .note.gnu.property
Type: SHT_NOTE
Flags: [ SHF_ALLOC ]
Address: 0x400338
AddressAlign: 0x8
Notes:
- Name: GNU
Desc: 020000C0040000000300000000000000
Type: NT_GNU_PROPERTY_TYPE_0
- Name: .note.gnu.build-id
Type: SHT_NOTE
Flags: [ SHF_ALLOC ]
Address: 0x400358
AddressAlign: 0x4
Notes:
- Name: GNU
Desc: AE3407FE6CCCA79129DD6837FC72006B35955447
Type: NT_PRPSINFO
- Name: .note.ABI-tag
Type: SHT_NOTE
Flags: [ SHF_ALLOC ]
Address: 0x40037C
AddressAlign: 0x4
Notes:
- Name: GNU
Desc: '00000000030000000200000000000000'
Type: NT_VERSION
- Name: .gnu.hash
Type: SHT_GNU_HASH
Flags: [ SHF_ALLOC ]
Address: 0x4003A0
Link: .dynsym
AddressAlign: 0x8
Header:
SymNdx: 0x1
Shift2: 0x0
BloomFilter: [ 0x0 ]
HashBuckets: [ 0x0 ]
HashValues: [ ]
- Name: .dynsym
Type: SHT_DYNSYM
Flags: [ SHF_ALLOC ]
Address: 0x4003C0
Link: .dynstr
AddressAlign: 0x8
- Name: .dynstr
Type: SHT_STRTAB
Flags: [ SHF_ALLOC ]
Address: 0x400420
AddressAlign: 0x1
- Name: .gnu.version
Type: SHT_GNU_versym
Flags: [ SHF_ALLOC ]
Address: 0x40045E
Link: .dynsym
AddressAlign: 0x2
Entries: [ 0, 2, 2, 0 ]
- Name: .gnu.version_r
Type: SHT_GNU_verneed
Flags: [ SHF_ALLOC ]
Address: 0x400468
Link: .dynstr
AddressAlign: 0x8
Dependencies:
- Version: 1
File: libc.so.6
Entries:
- Name: GLIBC_2.2.5
Hash: 157882997
Flags: 0
Other: 2
- Name: .rela.dyn
Type: SHT_RELA
Flags: [ SHF_ALLOC ]
Address: 0x400488
Link: .dynsym
AddressAlign: 0x8
Relocations:
- Offset: 0x403FF0
Symbol: __libc_start_main
Type: R_X86_64_GLOB_DAT
- Offset: 0x403FF8
Symbol: __gmon_start__
Type: R_X86_64_GLOB_DAT
- Name: .rela.plt
Type: SHT_RELA
Flags: [ SHF_ALLOC, SHF_INFO_LINK ]
Address: 0x4004B8
Link: .dynsym
AddressAlign: 0x8
Info: .got.plt
Relocations:
- Offset: 0x404018
Symbol: puts
Type: R_X86_64_JUMP_SLOT
- Name: .init
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
Address: 0x401000
AddressAlign: 0x4
Offset: 0x1000
Content: F30F1EFA4883EC08488B05E92F00004885C07402FFD04883C408C3
- Name: .plt
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
Address: 0x401020
AddressAlign: 0x10
EntSize: 0x10
Content: FF35E22F0000F2FF25E32F00000F1F00F30F1EFA6800000000F2E9E1FFFFFF90
- Name: .plt.got
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
Address: 0x401040
AddressAlign: 0x10
EntSize: 0x10
Content: F30F1EFAF2FF25CD2F00000F1F440000
- Name: .text
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
Address: 0x401050
AddressAlign: 0x10
Content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
- Name: .fini
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
Address: 0x4011E8
AddressAlign: 0x4
Content: F30F1EFA4883EC084883C408C3
- Name: .rodata
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC ]
Address: 0x402000
AddressAlign: 0x4
Offset: 0x2000
Content: 0100020048656C6C6F20776F726C64210A00
- Name: .eh_frame_hdr
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC ]
Address: 0x402014
AddressAlign: 0x4
Content: 011B033B48000000080000000CF0FFFF8C0000002CF0FFFFB40000003CF0FFFF640000006CF0FFFF7800000022F1FFFFCC0000003EF1FFFFE40000005CF1FFFFFC000000CCF1FFFF44010000
- Name: .eh_frame
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC ]
Address: 0x402060
AddressAlign: 0x8
Content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
- Name: .init_array
Type: SHT_INIT_ARRAY
Flags: [ SHF_WRITE, SHF_ALLOC ]
Address: 0x403E10
AddressAlign: 0x8
EntSize: 0x8
Offset: 0x2E10
Content: '3011400000000000'
- Name: .fini_array
Type: SHT_FINI_ARRAY
Flags: [ SHF_WRITE, SHF_ALLOC ]
Address: 0x403E18
AddressAlign: 0x8
EntSize: 0x8
Content: '0011400000000000'
- Name: .dynamic
Type: SHT_DYNAMIC
Flags: [ SHF_WRITE, SHF_ALLOC ]
Address: 0x403E20
Link: .dynstr
AddressAlign: 0x8
Entries:
- Tag: DT_NEEDED
Value: 0x1
- Tag: DT_INIT
Value: 0x401000
- Tag: DT_FINI
Value: 0x4011E8
- Tag: DT_INIT_ARRAY
Value: 0x403E10
- Tag: DT_INIT_ARRAYSZ
Value: 0x8
- Tag: DT_FINI_ARRAY
Value: 0x403E18
- Tag: DT_FINI_ARRAYSZ
Value: 0x8
- Tag: DT_GNU_HASH
Value: 0x4003A0
- Tag: DT_STRTAB
Value: 0x400420
- Tag: DT_SYMTAB
Value: 0x4003C0
- Tag: DT_STRSZ
Value: 0x3D
- Tag: DT_SYMENT
Value: 0x18
- Tag: DT_DEBUG
Value: 0x0
- Tag: DT_PLTGOT
Value: 0x404000
- Tag: DT_PLTRELSZ
Value: 0x18
- Tag: DT_PLTREL
Value: 0x7
- Tag: DT_JMPREL
Value: 0x4004B8
- Tag: DT_RELA
Value: 0x400488
- Tag: DT_RELASZ
Value: 0x30
- Tag: DT_RELAENT
Value: 0x18
- Tag: DT_VERNEED
Value: 0x400468
- Tag: DT_VERNEEDNUM
Value: 0x1
- Tag: DT_VERSYM
Value: 0x40045E
- Tag: DT_NULL
Value: 0x0
- Tag: DT_NULL
Value: 0x0
- Tag: DT_NULL
Value: 0x0
- Tag: DT_NULL
Value: 0x0
- Tag: DT_NULL
Value: 0x0
- Tag: DT_NULL
Value: 0x0
- Name: .got
Type: SHT_PROGBITS
Flags: [ SHF_WRITE, SHF_ALLOC ]
Address: 0x403FF0
AddressAlign: 0x8
EntSize: 0x8
Content: '00000000000000000000000000000000'
- Name: .got.plt
Type: SHT_PROGBITS
Flags: [ SHF_WRITE, SHF_ALLOC ]
Address: 0x404000
AddressAlign: 0x8
EntSize: 0x8
Content: '203E400000000000000000000000000000000000000000003010400000000000'
- Name: .data
Type: SHT_PROGBITS
Flags: [ SHF_WRITE, SHF_ALLOC ]
Address: 0x404020
AddressAlign: 0x8
Content: '00000000000000000000000000000000'
- Name: .tm_clone_table
Type: SHT_PROGBITS
Flags: [ SHF_WRITE, SHF_ALLOC ]
Address: 0x404030
AddressAlign: 0x8
- Name: .bss
Type: SHT_NOBITS
Flags: [ SHF_WRITE, SHF_ALLOC ]
Address: 0x404030
AddressAlign: 0x1
Size: 0x8
- Name: .comment
Type: SHT_PROGBITS
Flags: [ SHF_MERGE, SHF_STRINGS ]
AddressAlign: 0x1
EntSize: 0x1
Content: 4743433A20285562756E747520392E332E302D31377562756E7475317E32302E30342920392E332E3000
- Name: .rela.init
Type: SHT_RELA
Flags: [ SHF_INFO_LINK ]
Link: .symtab
AddressAlign: 0x8
Info: .init
Relocations:
- Offset: 0x40100B
Symbol: __gmon_start__
Type: R_X86_64_REX_GOTPCRELX
Addend: -4
- Name: .rela.text
Type: SHT_RELA
Flags: [ SHF_INFO_LINK ]
Link: .symtab
AddressAlign: 0x8
Info: .text
Relocations:
- Offset: 0x401066
Symbol: __libc_csu_fini
Type: R_X86_64_32S
- Offset: 0x40106D
Symbol: __libc_csu_init
Type: R_X86_64_32S
- Offset: 0x401074
Symbol: main
Type: R_X86_64_32S
- Offset: 0x40107A
Symbol: '__libc_start_main@@GLIBC_2.2.5'
Type: R_X86_64_GOTPCRELX
Addend: -4
- Offset: 0x401091
Symbol: __TMC_END__
Type: R_X86_64_32
- Offset: 0x401097
Symbol: .tm_clone_table
Type: R_X86_64_32S
- Offset: 0x40109E
Symbol: _ITM_deregisterTMCloneTable
Type: R_X86_64_32
- Offset: 0x4010A8
Symbol: .tm_clone_table
Type: R_X86_64_32
- Offset: 0x4010C1
Symbol: __TMC_END__
Type: R_X86_64_32
- Offset: 0x4010C8
Symbol: .tm_clone_table
Type: R_X86_64_32S
- Offset: 0x4010E0
Symbol: _ITM_registerTMCloneTable
Type: R_X86_64_32
- Offset: 0x4010EA
Symbol: .tm_clone_table
Type: R_X86_64_32
- Offset: 0x401106
Symbol: .bss
Type: R_X86_64_PC32
Addend: -5
- Offset: 0x401118
Symbol: .bss
Type: R_X86_64_PC32
Addend: -5
- Offset: 0x401144
Symbol: foo
Type: R_X86_64_PLT32
Addend: -4
- Offset: 0x40115D
Symbol: .LC0
Type: R_X86_64_PC32
Addend: -4
- Offset: 0x401162
Symbol: 'puts@@GLIBC_2.2.5'
Type: R_X86_64_PLT32
Addend: -4
- Offset: 0x401179
Symbol: __init_array_start
Type: R_X86_64_PC32
Addend: -4
- Offset: 0x401190
Symbol: __init_array_end
Type: R_X86_64_PC32
Addend: -4
- Offset: 0x40119D
Symbol: _init
Type: R_X86_64_PLT32
Addend: -4
- Name: .rela.eh_frame
Type: SHT_RELA
Flags: [ SHF_INFO_LINK ]
Link: .symtab
AddressAlign: 0x8
Info: .eh_frame
Relocations:
- Offset: 0x402080
Symbol: .text
Type: R_X86_64_PC32
- Offset: 0x402094
Symbol: .text
Type: R_X86_64_PC32
Addend: 48
- Offset: 0x4020E8
Symbol: .text
Type: R_X86_64_PC32
Addend: 230
- Offset: 0x402100
Symbol: .text
Type: R_X86_64_PC32
Addend: 258
- Offset: 0x402118
Symbol: .text
Type: R_X86_64_PC32
Addend: 288
- Offset: 0x402160
Symbol: .text
Type: R_X86_64_PC32
Addend: 400
- Name: .rela.init_array
Type: SHT_RELA
Flags: [ SHF_INFO_LINK ]
Link: .symtab
AddressAlign: 0x8
Info: .init_array
Relocations:
- Offset: 0x403E10
Symbol: .text
Type: R_X86_64_64
Addend: 224
- Name: .rela.fini_array
Type: SHT_RELA
Flags: [ SHF_INFO_LINK ]
Link: .symtab
AddressAlign: 0x8
Info: .fini_array
Relocations:
- Offset: 0x403E18
Symbol: .text
Type: R_X86_64_64
Addend: 176
- Type: SectionHeaderTable
Sections:
- Name: .interp
- Name: .note.gnu.property
- Name: .note.gnu.build-id
- Name: .note.ABI-tag
- Name: .gnu.hash
- Name: .dynsym
- Name: .dynstr
- Name: .gnu.version
- Name: .gnu.version_r
- Name: .rela.dyn
- Name: .rela.plt
- Name: .init
- Name: .rela.init
- Name: .plt
- Name: .plt.got
- Name: .text
- Name: .rela.text
- Name: .fini
- Name: .rodata
- Name: .eh_frame_hdr
- Name: .eh_frame
- Name: .rela.eh_frame
- Name: .init_array
- Name: .rela.init_array
- Name: .fini_array
- Name: .rela.fini_array
- Name: .dynamic
- Name: .got
- Name: .got.plt
- Name: .data
- Name: .tm_clone_table
- Name: .bss
- Name: .comment
- Name: .symtab
- Name: .strtab
- Name: .shstrtab
Symbols:
- Name: .interp
Type: STT_SECTION
Section: .interp
Value: 0x400318
- Name: .note.gnu.property
Type: STT_SECTION
Section: .note.gnu.property
Value: 0x400338
- Name: .note.gnu.build-id
Type: STT_SECTION
Section: .note.gnu.build-id
Value: 0x400358
- Name: .note.ABI-tag
Type: STT_SECTION
Section: .note.ABI-tag
Value: 0x40037C
- Name: .gnu.hash
Type: STT_SECTION
Section: .gnu.hash
Value: 0x4003A0
- Name: .dynsym
Type: STT_SECTION
Section: .dynsym
Value: 0x4003C0
- Name: .dynstr
Type: STT_SECTION
Section: .dynstr
Value: 0x400420
- Name: .gnu.version
Type: STT_SECTION
Section: .gnu.version
Value: 0x40045E
- Name: .gnu.version_r
Type: STT_SECTION
Section: .gnu.version_r
Value: 0x400468
- Name: .rela.dyn
Type: STT_SECTION
Section: .rela.dyn
Value: 0x400488
- Name: .rela.plt
Type: STT_SECTION
Section: .rela.plt
Value: 0x4004B8
- Name: .init
Type: STT_SECTION
Section: .init
Value: 0x401000
- Name: .plt
Type: STT_SECTION
Section: .plt
Value: 0x401020
- Name: .plt.got
Type: STT_SECTION
Section: .plt.got
Value: 0x401040
- Name: .text
Type: STT_SECTION
Section: .text
Value: 0x401050
- Name: .fini
Type: STT_SECTION
Section: .fini
Value: 0x4011E8
- Name: .rodata
Type: STT_SECTION
Section: .rodata
Value: 0x402000
- Name: .eh_frame_hdr
Type: STT_SECTION
Section: .eh_frame_hdr
Value: 0x402014
- Name: .eh_frame
Type: STT_SECTION
Section: .eh_frame
Value: 0x402060
- Name: .init_array
Type: STT_SECTION
Section: .init_array
Value: 0x403E10
- Name: .fini_array
Type: STT_SECTION
Section: .fini_array
Value: 0x403E18
- Name: .dynamic
Type: STT_SECTION
Section: .dynamic
Value: 0x403E20
- Name: .got
Type: STT_SECTION
Section: .got
Value: 0x403FF0
- Name: .got.plt
Type: STT_SECTION
Section: .got.plt
Value: 0x404000
- Name: .data
Type: STT_SECTION
Section: .data
Value: 0x404020
- Name: .tm_clone_table
Type: STT_SECTION
Section: .tm_clone_table
Value: 0x404030
- Name: .bss
Type: STT_SECTION
Section: .bss
Value: 0x404030
- Name: .comment
Type: STT_SECTION
Section: .comment
- Name: crtstuff.c
Type: STT_FILE
Index: SHN_ABS
- Name: __TMC_LIST__
Type: STT_OBJECT
Section: .tm_clone_table
Value: 0x404030
- Name: deregister_tm_clones
Type: STT_FUNC
Section: .text
Value: 0x401090
- Name: register_tm_clones
Type: STT_FUNC
Section: .text
Value: 0x4010C0
- Name: __do_global_dtors_aux
Type: STT_FUNC
Section: .text
Value: 0x401100
- Name: completed.8060
Type: STT_OBJECT
Section: .bss
Value: 0x404030
Size: 0x1
- Name: __do_global_dtors_aux_fini_array_entry
Type: STT_OBJECT
Section: .fini_array
Value: 0x403E18
- Name: frame_dummy
Type: STT_FUNC
Section: .text
Value: 0x401130
- Name: __frame_dummy_init_array_entry
Type: STT_OBJECT
Section: .init_array
Value: 0x403E10
- Name: inline-main.c
Type: STT_FILE
Index: SHN_ABS
- Name: inline-foo.c
Type: STT_FILE
Index: SHN_ABS
- Name: .LC0
Section: .rodata
Value: 0x402004
- Name: 'crtstuff.c (1)'
Type: STT_FILE
Index: SHN_ABS
- Name: __FRAME_END__
Type: STT_OBJECT
Section: .eh_frame
Value: 0x40216C
- Type: STT_FILE
Index: SHN_ABS
- Name: __init_array_end
Section: .init_array
Value: 0x403E18
- Name: _DYNAMIC
Type: STT_OBJECT
Section: .dynamic
Value: 0x403E20
- Name: __init_array_start
Section: .init_array
Value: 0x403E10
- Name: __GNU_EH_FRAME_HDR
Section: .eh_frame_hdr
Value: 0x402014
- Name: _GLOBAL_OFFSET_TABLE_
Type: STT_OBJECT
Section: .got.plt
Value: 0x404000
- Name: __libc_csu_fini
Type: STT_FUNC
Section: .text
Binding: STB_GLOBAL
Value: 0x4011E0
Size: 0x5
- Name: _ITM_deregisterTMCloneTable
Binding: STB_WEAK
- Name: data_start
Section: .data
Binding: STB_WEAK
Value: 0x404020
- Name: 'puts@@GLIBC_2.2.5'
Type: STT_FUNC
Binding: STB_GLOBAL
- Name: _edata
Section: .tm_clone_table
Binding: STB_GLOBAL
Value: 0x404030
- Name: _fini
Type: STT_FUNC
Section: .fini
Binding: STB_GLOBAL
Value: 0x4011E8
Other: [ STV_HIDDEN ]
- Name: '__libc_start_main@@GLIBC_2.2.5'
Type: STT_FUNC
Binding: STB_GLOBAL
- Name: __data_start
Section: .data
Binding: STB_GLOBAL
Value: 0x404020
- Name: __gmon_start__
Binding: STB_WEAK
- Name: __dso_handle
Type: STT_OBJECT
Section: .data
Binding: STB_GLOBAL
Value: 0x404028
Other: [ STV_HIDDEN ]
- Name: _IO_stdin_used
Type: STT_OBJECT
Section: .rodata
Binding: STB_GLOBAL
Value: 0x402000
Size: 0x4
- Name: __libc_csu_init
Type: STT_FUNC
Section: .text
Binding: STB_GLOBAL
Value: 0x401170
Size: 0x65
- Name: foo
Type: STT_FUNC
Section: .text
Binding: STB_GLOBAL
Value: 0x401152
Size: 0x19
- Name: _end
Section: .bss
Binding: STB_GLOBAL
Value: 0x404038
- Name: _dl_relocate_static_pie
Type: STT_FUNC
Section: .text
Binding: STB_GLOBAL
Value: 0x401080
Size: 0x5
Other: [ STV_HIDDEN ]
- Name: _start
Type: STT_FUNC
Section: .text
Binding: STB_GLOBAL
Value: 0x401050
Size: 0x2F
- Name: __bss_start
Section: .bss
Binding: STB_GLOBAL
Value: 0x404030
- Name: main
Type: STT_FUNC
Section: .text
Binding: STB_GLOBAL
Value: 0x401136
Size: 0x1C
- Name: __TMC_END__
Type: STT_OBJECT
Section: .tm_clone_table
Binding: STB_GLOBAL
Value: 0x404030
Other: [ STV_HIDDEN ]
- Name: _ITM_registerTMCloneTable
Binding: STB_WEAK
- Name: _init
Type: STT_FUNC
Section: .init
Binding: STB_GLOBAL
Value: 0x401000
Other: [ STV_HIDDEN ]
DynamicSymbols:
- Name: puts
Type: STT_FUNC
Binding: STB_GLOBAL
- Name: __libc_start_main
Type: STT_FUNC
Binding: STB_GLOBAL
- Name: __gmon_start__
Binding: STB_WEAK
...

1437
bolt/test/X86/Inputs/plt-sec-8-byte.yaml Normal file
View File

File diff suppressed because it is too large Load Diff

6
bolt/test/X86/plt-sec-8-byte.test Normal file
View File

@ -0,0 +1,6 @@
## Check correctness of processing .plt.sec with 8-byte entries.
# RUN: yaml2obj %p/Inputs/plt-sec-8-byte.yaml &> %t.exe
# RUN: llvm-bolt %t.exe -print-cfg -print-only=main -o %t.out | FileCheck %s
CHECK: callq printf@PLT
CHECK: callq exit@PLT

5
bolt/test/X86/plt-sec.test
View File

@ -2,5 +2,10 @@
# RUN: yaml2obj %p/Inputs/plt-sec.yaml &> %t.exe
# RUN: llvm-bolt %t.exe -print-cfg -print-only=foo -o %t.out | FileCheck %s
## Check that llvm-bolt correctly identifies functions in .plt.got that has
## endbr instruction at the start of its entries.
# RUN: yaml2obj %p/Inputs/plt-got-sec.yaml &> %t.exe
# RUN: llvm-bolt %t.exe -print-cfg -print-only=foo -o %t.out | FileCheck %s
## The only call instruction in function foo() should be a call to PLT.
CHECK: callq puts@PLT