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# SEC: Section Object

## Enumerations

enum | LEVEL_CORE::SEC_TYPE { SEC_TYPE_INVALID, SEC_TYPE_UNUSED, LEVEL_CORE::SEC_TYPE_REGREL, LEVEL_CORE::SEC_TYPE_DYNREL,
LEVEL_CORE::SEC_TYPE_EXEC,
LEVEL_CORE::SEC_TYPE_DATA,
SEC_TYPE_DYNAMIC,
SEC_TYPE_OPD,
SEC_TYPE_GOT,
SEC_TYPE_STACK,
SEC_TYPE_PLTOFF,
SEC_TYPE_HASH,
LEVEL_CORE::SEC_TYPE_LSDA,
SEC_TYPE_UNWIND,
SEC_TYPE_UNWINDINFO,
SEC_TYPE_REGSYM,
SEC_TYPE_DYNSYM,
SEC_TYPE_DEBUG,
LEVEL_CORE::SEC_TYPE_BSS,
SEC_TYPE_SYMSTR,
SEC_TYPE_DYNSTR,
SEC_TYPE_SECSTR,
SEC_TYPE_COMMENT,
LEVEL_CORE::SEC_TYPE_LOOS,
LEVEL_CORE::SEC_TYPE_USER,
SEC_TYPE_LAST
}

## Functions

IMG | LEVEL_PINCLIENT::SEC_Img (SEC sec)
SEC | LEVEL_PINCLIENT::SEC_Next (SEC sec)
SEC | LEVEL_PINCLIENT::SEC_Prev (SEC sec)
SEC | LEVEL_PINCLIENT::SEC_Invalid ()
BOOL | LEVEL_PINCLIENT::SEC_Valid (SEC x)
RTN | LEVEL_PINCLIENT::SEC_RtnHead (SEC sec)
RTN | LEVEL_PINCLIENT::SEC_RtnTail (SEC sec)
const string & | LEVEL_PINCLIENT::SEC_Name (SEC sec)
SEC_TYPE | LEVEL_PINCLIENT::SEC_Type (SEC sec)
BOOL | LEVEL_PINCLIENT::SEC_Mapped (SEC sec)
const VOID * | LEVEL_PINCLIENT::SEC_Data (SEC sec)
ADDRINT | LEVEL_PINCLIENT::SEC_Address (SEC sec)
BOOL | LEVEL_PINCLIENT::SEC_IsReadable (SEC sec)
BOOL | LEVEL_PINCLIENT::SEC_IsWriteable (SEC sec)
BOOL | LEVEL_PINCLIENT::SEC_IsExecutable (SEC sec)
USIZE | LEVEL_PINCLIENT::SEC_Size (SEC sec)

## Detailed Description

A SEC is modeled after the sections found inside elf images. Can be accessed at instrumentation time and analysis time.

SECs can be mapped or unmapped, a mapped SEC occupies address space inside the IMG. Unmapped SECs often contain debug and relocation information.
APIs from this group are available in any thread, including any internal thread spawned by the tool.

Iteration idioms:

      // Forward pass over all sections in an image
      for( SEC sec= IMG_SecHead(img); SEC_Valid(sec); sec = SEC_Next(sec) )

      // Reverse pass over all sections in animage
      for( SEC sec= IMG_SecTail(img); SEC_Valid(sec); sec = SEC_Prev(sec) )

Availability:
  Mode: JIT & Probe
  O/S: Linux & Windows
  CPU: All

## Enumeration Type Documentation

enum LEVEL_CORE::SEC_TYPE

| SEC types

Enumerator:

  SEC_TYPE_REGREL | relocations
  SEC_TYPE_DYNREL | dynamic relocations
  SEC_TYPE_EXEC | contains code
  SEC_TYPE_DATA | contains initialized data
  SEC_TYPE_LSDA | old exception_info (obsolete)
  SEC_TYPE_BSS | contains uninitialized data
  SEC_TYPE_LOOS | OS specific.
  SEC_TYPE_USER | Application specific.

## Function Documentation

ADDRINT LEVEL_PINCLIENT::SEC_Address | ( | SEC | sec | ) |

Returns:
  Address in memory of sec

If image is loaded by system loader, the real virtual address of section will be returned. If the image is mapped by IMG_Open() the address will be inside the mapped image. On Unix, if the section is not loadable, 0 will be returned in the both cases.

const VOID* LEVEL_PINCLIENT::SEC_Data | ( | SEC | sec | ) |

Returns:
  Return a pointer to the raw data for the section

On Linux, Pin maps the whole image file for processing. The pointer returned by SEC_Data() points inside the mapped file. Note, SEC_Data() pointer is always between IMG_StartAddress() and IMG_StartAddress() + IMG_SizeMapped(). If you are analyzing image in image-load callback, please remember that the image will be unmapped after the callback returns and the pointer provided by SEC_Data() becomes invalid. If you are working with IMG_Open() the pointer is valid until IMG_Close().

If section does not have raw data the function returns 0.

Availability:
  Mode: JIT & Probe
  O/S: Linux, Windows & MacOS
  CPU: All

IMG LEVEL_PINCLIENT::SEC_Img | ( | SEC | sec | ) |

Returns:
  Image that contains this section

Availability:
  Mode: JIT & Probe
  O/S: Linux, Windows & MacOS
  CPU: All

SEC LEVEL_PINCLIENT::SEC_Invalid | ( |  | ) |

Returns:
  Invalid section value

Availability:
  Mode: JIT & Probe
  O/S: Linux, Windows & MacOS
  CPU: All

BOOL LEVEL_PINCLIENT::SEC_IsExecutable | ( | SEC | sec | ) |

Returns:
  TRUE if section is executable

BOOL LEVEL_PINCLIENT::SEC_IsReadable | ( | SEC | sec | ) |

Returns:
  TRUE if section is readable

BOOL LEVEL_PINCLIENT::SEC_IsWriteable | ( | SEC | sec | ) |

Returns:
  TRUE if section is writable

BOOL LEVEL_PINCLIENT::SEC_Mapped | ( | SEC | sec | ) |

Returns:
  True if section is mapped in memory, unmapped section contain data not needed at run time, like debug information

Availability:
  Mode: JIT & Probe
  O/S: Linux, Windows & MacOS
  CPU: All

const string& LEVEL_PINCLIENT::SEC_Name | ( | SEC | sec | ) |

Returns:
  Section name

Availability:
  Mode: JIT & Probe
  O/S: Linux, Windows & MacOS
  CPU: All

SEC LEVEL_PINCLIENT::SEC_Next | ( | SEC | sec | ) |

Returns:
  Section that follows x, or SEC_Invalid() is x is last section in the image

Availability:
  Mode: JIT & Probe
  O/S: Linux, Windows & MacOS
  CPU: All

SEC LEVEL_PINCLIENT::SEC_Prev | ( | SEC | sec | ) |

Returns:
  Previous section of x, or SEC_Invalid() if x is the first in the image

Availability:
  Mode: JIT & Probe
  O/S: Linux, Windows & MacOS
  CPU: All

RTN LEVEL_PINCLIENT::SEC_RtnHead | ( | SEC | sec | ) |

Returns:
  First RTN of x, or RTN_Invalid() if no RTNs

Availability:
  Mode: JIT & Probe
  O/S: Linux, Windows & MacOS
  CPU: All

RTN LEVEL_PINCLIENT::SEC_RtnTail | ( | SEC | sec | ) |

Returns:
  Last RTN of x, or RTN_Invalid() if no RTNs

Availability:
  Mode: JIT & Probe
  O/S: Linux, Windows & MacOS
  CPU: All

USIZE LEVEL_PINCLIENT::SEC_Size | ( | SEC | sec | ) |

Returns:
  Size of section

SEC_TYPE LEVEL_PINCLIENT::SEC_Type | ( | SEC | sec | ) |

Returns:
  Section type

Availability:
  Mode: JIT & Probe
  O/S: Linux, Windows & MacOS
  CPU: All

BOOL LEVEL_PINCLIENT::SEC_Valid | ( | SEC | x | ) |

Returns:
  True if x is not SEC_Invalid()

Availability:
  Mode: JIT & Probe
  O/S: Linux, Windows & MacOS
  CPU: All