test/tools/llvm-readobj/dyn-symbols.test

# RUN: llvm-readobj --dyn-symbols %p/Inputs/dynamic-table-so.x86 | FileCheck %s

## Check the two-letter alias --dt is equivalent to the --dyn-symbols full flag
## name.

# RUN: llvm-readobj --dt %p/Inputs/dynamic-table-so.x86 > %t.readobj-dt-alias
# RUN: llvm-readobj --dyn-symbols %p/Inputs/dynamic-table-so.x86 > %t.readobj-dt-no-alias
# RUN: diff %t.readobj-dt-alias %t.readobj-dt-no-alias

# CHECK:      DynamicSymbols [
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name:
# CHECK-NEXT:     Value: 0x0
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Local
# CHECK-NEXT:     Type: None
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: Undefined
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name:
# CHECK-NEXT:     Value: 0x618
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Local
# CHECK-NEXT:     Type: Section
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: .init
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name:
# CHECK-NEXT:     Value: 0x200DC0
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Local
# CHECK-NEXT:     Type: Section
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: .tbss
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name: _ITM_deregisterTMCloneTable{{ }}
# CHECK-NEXT:     Value: 0x0
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Weak
# CHECK-NEXT:     Type: None
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: Undefined
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name: puts@GLIBC_2.2.5{{ }}
# CHECK-NEXT:     Value: 0x0
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Global
# CHECK-NEXT:     Type: Function
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: Undefined
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name: __tls_get_addr@GLIBC_2.3{{ }}
# CHECK-NEXT:     Value: 0x0
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Global
# CHECK-NEXT:     Type: Function
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: Undefined
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name: __gmon_start__{{ }}
# CHECK-NEXT:     Value: 0x0
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Weak
# CHECK-NEXT:     Type: None
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: Undefined
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name: _Jv_RegisterClasses{{ }}
# CHECK-NEXT:     Value: 0x0
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Weak
# CHECK-NEXT:     Type: None
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: Undefined
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name: _ITM_registerTMCloneTable{{ }}
# CHECK-NEXT:     Value: 0x0
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Weak
# CHECK-NEXT:     Type: None
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: Undefined
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name: __cxa_finalize@GLIBC_2.2.5{{ }}
# CHECK-NEXT:     Value: 0x0
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Weak
# CHECK-NEXT:     Type: Function
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: Undefined
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name: _edata{{ }}
# CHECK-NEXT:     Value: 0x201030
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Global
# CHECK-NEXT:     Type: None
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: .data
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name: foo{{ }}
# CHECK-NEXT:     Value: 0x0
# CHECK-NEXT:     Size: 4
# CHECK-NEXT:     Binding: Global
# CHECK-NEXT:     Type: TLS
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: .tbss
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name: _end{{ }}
# CHECK-NEXT:     Value: 0x201038
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Global
# CHECK-NEXT:     Type: None
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: .bss
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name: __bss_start{{ }}
# CHECK-NEXT:     Value: 0x201030
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Global
# CHECK-NEXT:     Type: None
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: .bss
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name: main{{ }}
# CHECK-NEXT:     Value: 0x780
# CHECK-NEXT:     Size: 59
# CHECK-NEXT:     Binding: Global
# CHECK-NEXT:     Type: Function
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: .text
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name: _init{{ }}
# CHECK-NEXT:     Value: 0x618
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Global
# CHECK-NEXT:     Type: Function
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: .init
# CHECK-NEXT:   }
# CHECK-NEXT:   Symbol {
# CHECK-NEXT:     Name: _fini{{ }}
# CHECK-NEXT:     Value: 0x7BC
# CHECK-NEXT:     Size: 0
# CHECK-NEXT:     Binding: Global
# CHECK-NEXT:     Type: Function
# CHECK-NEXT:     Other: 0
# CHECK-NEXT:     Section: .fini
# CHECK-NEXT:   }
# CHECK-NEXT: ]

## Check that we are able to dump the dynamic symbol table even when we have no program headers.
## In this case we find the table by it's type (SHT_DYNSYM) and ignore the DT_SYMTAB value.

# RUN: yaml2obj --docnum=1 %s -o %t1.so
# RUN: llvm-readobj %t1.so --dyn-symbols | FileCheck %s --check-prefix=NOPHDRS

# NOPHDRS: Name: foo

--- !ELF
FileHeader:
  Class:   ELFCLASS64
  Data:    ELFDATA2LSB
  Type:    ET_DYN
  Machine: EM_X86_64
Sections:
  - Name:    .dynamic
    Type:    SHT_DYNAMIC
    Entries:
      - Tag:   DT_SYMTAB
        Value: 0xffff1234
      - Tag:   DT_NULL
        Value: 0
DynamicSymbols:
  - Name: foo

## Check we report a warning when there is no SHT_DYNSYM section and we can't map the DT_SYMTAB value
## to an address because of the absence of a corresponding PT_LOAD program header.

# RUN: yaml2obj --docnum=2 %s -o %t2.so
# RUN: llvm-readobj %t2.so --dyn-symbols 2>&1 | FileCheck %s -DFILE=%t2.so --check-prefix=NOSHT-DYNSYM

# NOSHT-DYNSYM: warning: '[[FILE]]': Unable to parse DT_SYMTAB: virtual address is not in any segment: 0x0
# NOSHT-DYNSYM:      DynamicSymbols [
# NOSHT-DYNSYM-NEXT: ]

--- !ELF
FileHeader:
  Class:   ELFCLASS64
  Data:    ELFDATA2LSB
  Type:    ET_DYN
  Machine: EM_X86_64
Sections:
  - Name:    .dynsym
    Type:    SHT_PROGBITS
  - Name:    .dynamic
    Type:    SHT_DYNAMIC
    Entries:
      - Tag:   DT_SYMTAB
        Value: 0
      - Tag:   DT_NULL
        Value: 0
DynamicSymbols:
  - Name: foo

## Check that when we can't map the value of the DT_SYMTAB tag to an address, we report a warning and
## use the information in the section header table to locate the dynamic symbol table.

# RUN: yaml2obj --docnum=3 %s -o %t3.so
# RUN: llvm-readobj %t3.so --dyn-symbols 2>&1 | FileCheck -DFILE=%t3.so %s --check-prefix=BROKEN-DTSYMTAB

# BROKEN-DTSYMTAB: warning: '[[FILE]]': Unable to parse DT_SYMTAB: virtual address is not in any segment: 0xffff1234
# BROKEN-DTSYMTAB: Name: foo

--- !ELF
FileHeader:
  Class:   ELFCLASS64
  Data:    ELFDATA2LSB
  Type:    ET_DYN
  Machine: EM_X86_64
Sections:
  - Name:    .dynamic
    Type:    SHT_DYNAMIC
    Entries:
      - Tag:   DT_SYMTAB
        Value: 0xffff1234
      - Tag:   DT_NULL
        Value: 0
DynamicSymbols:
  - Name: foo
ProgramHeaders:
  - Type: PT_LOAD
    VAddr: 0x0000
    Sections:
      - Section: .dynsym

## Check that if we can get the location of the dynamic symbol table using both the DT_SYMTAB value
## and the section headers table then we prefer the former and report a warning.

# RUN: yaml2obj --docnum=4 %s -o %t4.so
# RUN: llvm-readobj %t4.so --dyn-symbols 2>&1 | FileCheck -DFILE=%t4.so %s --check-prefix=PREFER-DTSYMTAB

# PREFER-DTSYMTAB: warning: '[[FILE]]': SHT_DYNSYM section header and DT_SYMTAB disagree about the location of the dynamic symbol table
# PREFER-DTSYMTAB: Name: o

--- !ELF
FileHeader:
  Class:   ELFCLASS64
  Data:    ELFDATA2LSB
  Type:    ET_DYN
  Machine: EM_X86_64
Sections:
  - Name:    .dynamic
    Type:    SHT_DYNAMIC
    Entries:
      - Tag:   DT_SYMTAB
        Value: 0x0
      - Tag:   DT_NULL
        Value: 0
  - Name: .dynsym
    Type: SHT_DYNSYM
  - Name: .mydynsym
    Type: SHT_DYNSYM
## The Content describes 2 symbols: zero symbol and symbol with st_name == 3.
    Content: "000000000000000000000000000000000000000000000000030000000000000000000000000000000000000000000000"
DynamicSymbols:
  - Name: foo
ProgramHeaders:
  - Type: PT_LOAD
    VAddr: 0x0000
    Sections:
      - Section: .mydynsym