1.1. General

The Linux Standard Base (LSB) defines a system interface for compiled applications and a minimal environment for support of installation scripts. Its purpose is to enable a uniform industry standard environment for high-volume applications conforming to the LSB.

These specifications are composed of two basic parts: A common specification ("LSB-generic" or "generic LSB"), ISO/IEC 23360 Part 1, describing those parts of the interface that remain constant across all implementations of the LSB, and an architecture-specific part ("LSB-arch" or "archLSB") describing the parts of the interface that vary by processor architecture. Together, the LSB-generic and the relevant architecture-specific part of ISO/IEC 23360 for a single hardware architecture provide a complete interface specification for compiled application programs on systems that share a common hardware architecture.

ISO/IEC 23360 Part 1, the LSB-generic document, should be used in conjunction with an architecture-specific part. Whenever a section of the LSB-generic specification is supplemented by architecture-specific information, the LSB-generic document includes a reference to the architecture part. Architecture-specific parts of ISO/IEC 23360 may also contain additional information that is not referenced in the LSB-generic document.

The LSB contains both a set of Application Program Interfaces (APIs) and Application Binary Interfaces (ABIs). APIs may appear in the source code of portable applications, while the compiled binary of that application may use the larger set of ABIs. A conforming implementation provides all of the ABIs listed here. The compilation system may replace (e.g. by macro definition) certain APIs with calls to one or more of the underlying binary interfaces, and may insert calls to binary interfaces as needed.

The LSB is primarily a binary interface definition. Not all of the source level APIs available to applications may be contained in this specification.

1.2. Module Specific Scope

This is the IA32 architecture specific Core part of the Linux Standard Base (LSB). This part supplements the generic LSB Core module with those interfaces that differ between architectures.

Interfaces described in this part of ISO/IEC 23360 are mandatory except where explicitly listed otherwise. Core interfaces may be supplemented by other modules; all modules are built upon the core.

2.1. Normative References

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

2.2. Informative References/Bibliography

In addition, the specifications listed below provide essential background information to implementors of this specification. These references are included for information only.

3.1. Relevant Libraries

The libraries listed in Table 3-1 shall be available on IA32 Linux Standard Base systems, with the specified runtime names. These names override or supplement the names specified in the generic LSB (ISO/IEC 23360 Part 1) specification. The specified program interpreter, referred to as proginterp in this table, shall be used to load the shared libraries specified by DT_NEEDED entries at run time.

These libraries will be in an implementation-defined directory which the dynamic linker shall search by default.

3.2. LSB Implementation Conformance

A conforming implementation is necessarily architecture specific, and must provide the interfaces specified by both the generic LSB Core specification (ISO/IEC 23360 Part 1) and the relevant architecture specific part of ISO/IEC 23360.

A conforming implementation shall satisfy the following requirements:

• A processor architecture represents a family of related processors which may not have identical feature sets. The architecture specific parts of ISO/IEC 23360 that supplement this specification for a given target processor architecture describe a minimum acceptable processor. The implementation shall provide all features of this processor, whether in hardware or through emulation transparent to the application.

• The implementation shall be capable of executing compiled applications having the format and using the system interfaces described in this document.

• The implementation shall provide libraries containing the interfaces specified by this document, and shall provide a dynamic linking mechanism that allows these interfaces to be attached to applications at runtime. All the interfaces shall behave as specified in this document.

• The map of virtual memory provided by the implementation shall conform to the requirements of this document.

• The implementation's low-level behavior with respect to function call linkage, system traps, signals, and other such activities shall conform to the formats described in this document.

• The implementation shall provide all of the mandatory interfaces in their entirety.

• The implementation may provide one or more of the optional interfaces. Each optional interface that is provided shall be provided in its entirety. The product documentation shall state which optional interfaces are provided.

• The implementation shall provide all files and utilities specified as part of this document in the format defined here and in other referenced documents. All commands and utilities shall behave as required by this document. The implementation shall also provide all mandatory components of an application's runtime environment that are included or referenced in this document.

• The implementation, when provided with standard data formats and values at a named interface, shall provide the behavior defined for those values and data formats at that interface. However, a conforming implementation may consist of components which are separately packaged and/or sold. For example, a vendor of a conforming implementation might sell the hardware, operating system, and windowing system as separately packaged items.

• The implementation may provide additional interfaces with different names. It may also provide additional behavior corresponding to data values outside the standard ranges, for standard named interfaces.

3.3. LSB Application Conformance

A conforming application is necessarily architecture specific, and must conform to both the generic LSB Core specification (ISO/IEC 23360 Part 1)and the relevant architecture specific part of ISO/IEC 23360.

A conforming application shall satisfy the following requirements:

• Its executable files shall be either shell scripts or object files in the format defined for the Object File Format system interface.

• Its object files shall participate in dynamic linking as defined in the Program Loading and Linking System interface.

• It shall employ only the instructions, traps, and other low-level facilities defined in the Low-Level System interface as being for use by applications.

• If it requires any optional interface defined in this document in order to be installed or to execute successfully, the requirement for that optional interface shall be stated in the application's documentation.

• It shall not use any interface or data format that is not required to be provided by a conforming implementation, unless:

  • If such an interface or data format is supplied by another application through direct invocation of that application during execution, that application shall be in turn an LSB conforming application.

  • The use of that interface or data format, as well as its source, shall be identified in the documentation of the application.

• It shall not use any values for a named interface that are reserved for vendor extensions.

8.1. Machine Interface

8.2. Function Calling Sequence

LSB-conforming applications shall use the function calling sequence as defined in Chapter 3 of the System V ABI, IA32 Supplement.

8.3. Operating System Interface

LSB-conforming applications shall use the following aspects of the Operating System Interfaces as defined in Chapter 3 of the System V ABI, IA32 Supplement.

8.4. Process Initialization

An LSB-conforming implementation shall cause an application to be initialized as described in the Process Initialization section of Chapter 3 of the System V ABI, IA32 Supplement, and as described below.

8.5. Coding Examples

8.6. C Stack Frame

8.7. Debug Information

There are no architecture specific requirements for debugging information for this architecture. LSB-conforming applications may utilize DWARF sections as described in the generic specification.

9.1. Introduction

LSB-conforming implementations shall support an object file format, called Executable and Linking Format (ELF) as defined by the System V ABI , System V ABI Update , System V ABI, IA32 Supplement and as supplemented by the ISO/IEC 23360 Part 1 and the generic LSB specification.

9.2. ELF Header

9.3. Special Sections

9.4. Symbol Table

LSB-conforming applications shall use the Symbol Table section as defined in Chapter 4 of the System V ABI, IA32 Supplement.

9.5. Relocation

10.1. Introduction

LSB-conforming implementations shall support the object file information and system actions that create running programs as specified in the System V ABI , System V ABI Update , System V ABI, IA32 Supplement and as supplemented by ISO/IEC 23360 Part 1 and the generic LSB specification.

10.2. Program Header

10.3. Program Loading

LSB-conforming systems shall support program loading as defined in Chapter 5 of the System V ABI, IA32 Supplement.

10.4. Dynamic Linking

LSB-conforming systems shall support dynamic linking as defined in Chapter 5 of the System V ABI, IA32 Supplement.

11.1. Program Interpreter/Dynamic Linker

The Program Interpreter shall be /lib/ld-lsb.so.3.

11.2. Interfaces for libc

Table 11-1 defines the library name and shared object name for the libc library

The behavior of the interfaces in this library is specified by the following specifications:

11.3. Data Definitions for libc

This section defines global identifiers and their values that are associated with interfaces contained in libc. These definitions are organized into groups that correspond to system headers. This convention is used as a convenience for the reader, and does not imply the existence of these headers, or their content. Where an interface is defined as requiring a particular system header file all of the data definitions for that system header file presented here shall be in effect.

This section gives data definitions to promote binary application portability, not to repeat source interface definitions available elsewhere. System providers and application developers should use this ABI to supplement - not to replace - source interface definition specifications.

This specification uses the ISO C (1999) C Language as the reference programming language, and data definitions are specified in ISO C format. The C language is used here as a convenient notation. Using a C language description of these data objects does not preclude their use by other programming languages.

enum {
    _ISupper = 256,
    _ISlower = 512,
    _ISalpha = 1024,
    _ISdigit = 2048,
    _ISxdigit = 4096,
    _ISspace = 8192,
    _ISprint = 16384,
    _ISgraph = 32768,
    _ISblank = 1,
    _IScntrl = 2,
    _ISpunct = 4,
    _ISalnum = 8
};

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

#define EDEADLOCK	EDEADLK

#define O_LARGEFILE	0100000

#define F_GETLK64	12
#define F_SETLK64	13
#define F_SETLKW64	14

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

#define LONG_MAX	0x7FFFFFFFL
#define ULONG_MAX	0xFFFFFFFFUL

#define CHAR_MAX	SCHAR_MAX
#define CHAR_MIN	SCHAR_MIN

#define PTHREAD_STACK_MIN	16384

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

typedef int __jmp_buf[6];

#define SIGEV_PAD_SIZE	((SIGEV_MAX_SIZE/sizeof(int))-3)

#define SI_PAD_SIZE	((SI_MAX_SIZE/sizeof(int))-3)

struct sigaction {
    union {
	sighandler_t _sa_handler;
	void (*_sa_sigaction) (int, siginfo_t *, void *);
    } __sigaction_handler;
    sigset_t sa_mask;
    unsigned long int sa_flags;
    void (*sa_restorer) (void);
};

#define MINSIGSTKSZ	2048
#define SIGSTKSZ	8192

struct _fpreg {
    unsigned short significand[4];
    unsigned short exponent;
};
struct _fpxreg {
    unsigned short significand[4];
    unsigned short exponent;
    unsigned short padding[3];
};
struct _xmmreg {
    unsigned long int element[4];
};

struct _fpstate {
    unsigned long int cw;
    unsigned long int sw;
    unsigned long int tag;
    unsigned long int ipoff;
    unsigned long int cssel;
    unsigned long int dataoff;
    unsigned long int datasel;
    struct _fpreg _st[8];
    unsigned short status;
    unsigned short magic;
    unsigned long int _fxsr_env[6];
    unsigned long int mxcsr;
    unsigned long int reserved;
    struct _fpxreg _fxsr_st[8];
    struct _xmmreg _xmm[8];
    unsigned long int padding[56];
};

struct sigcontext {
    unsigned short gs;
    unsigned short __gsh;
    unsigned short fs;
    unsigned short __fsh;
    unsigned short es;
    unsigned short __esh;
    unsigned short ds;
    unsigned short __dsh;
    unsigned long int edi;
    unsigned long int esi;
    unsigned long int ebp;
    unsigned long int esp;
    unsigned long int ebx;
    unsigned long int edx;
    unsigned long int ecx;
    unsigned long int eax;
    unsigned long int trapno;
    unsigned long int err;
    unsigned long int eip;
    unsigned short cs;
    unsigned short __csh;
    unsigned long int eflags;
    unsigned long int esp_at_signal;
    unsigned short ss;
    unsigned short __ssh;
    struct _fpstate *fpstate;
    unsigned long int oldmask;
    unsigned long int cr2;
};

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

typedef long int wchar_t;
typedef unsigned int size_t;
typedef int ptrdiff_t;

#define INT64_C(c)	c ## LL
#define INTMAX_C(c)	c ## LL
#define __INT64_C(c)	c ## LL
#define UINT64_C(c)	c ## ULL
#define UINTMAX_C(c)	c ## ULL
#define __UINT64_C(c)	c ## ULL

#define INTPTR_MIN	(-2147483647-1)
#define INT_FAST16_MIN	(-2147483647-1)
#define INT_FAST32_MIN	(-2147483647-1)
#define PTRDIFF_MIN	(-2147483647-1)
#define INTPTR_MAX	(2147483647)
#define INT_FAST16_MAX	(2147483647)
#define INT_FAST32_MAX	(2147483647)
#define PTRDIFF_MAX	(2147483647)
#define SIZE_MAX	(4294967295U)
#define UINTPTR_MAX	(4294967295U)
#define UINT_FAST16_MAX	(4294967295U)
#define UINT_FAST32_MAX	(4294967295U)

typedef long long int int64_t;
typedef long long int intmax_t;
typedef unsigned long long int uintmax_t;
typedef int intptr_t;
typedef unsigned int uintptr_t;
typedef unsigned long long int uint64_t;
typedef long long int int_least64_t;
typedef unsigned long long int uint_least64_t;
typedef int int_fast16_t;
typedef int int_fast32_t;
typedef long long int int_fast64_t;
typedef unsigned int uint_fast16_t;
typedef unsigned int uint_fast32_t;
typedef unsigned long long int uint_fast64_t;

#define __IO_FILE_SIZE	148

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

#define TIOCGWINSZ	0x5413
#define FIONREAD	0x541B
#define TIOCNOTTY	0x5422

struct ipc_perm {
    key_t __key;
    uid_t uid;
    gid_t gid;
    uid_t cuid;
    gid_t cgid;
    unsigned short mode;
    unsigned short __pad1;
    unsigned short __seq;
    unsigned short __pad2;
    unsigned long int __unused1;
    unsigned long int __unused2;
};

#define MCL_CURRENT	1
#define MCL_FUTURE	2

typedef unsigned long int msgqnum_t;
typedef unsigned long int msglen_t;

struct msqid_ds {
    struct ipc_perm msg_perm;
    time_t msg_stime;
    unsigned long int __unused1;
    time_t msg_rtime;
    unsigned long int __unused2;
    time_t msg_ctime;
    unsigned long int __unused3;
    unsigned long int __msg_cbytes;
    msgqnum_t msg_qnum;
    msglen_t msg_qbytes;
    pid_t msg_lspid;
    pid_t msg_lrpid;
    unsigned long int __unused4;
    unsigned long int __unused5;
};

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

struct semid_ds {
    struct ipc_perm sem_perm;
    time_t sem_otime;
    unsigned long int __unused1;
    time_t sem_ctime;
    unsigned long int __unused2;
    unsigned long int sem_nsems;
    unsigned long int __unused3;
    unsigned long int __unused4;
};

#define SHMLBA	(__getpagesize())

typedef unsigned long int shmatt_t;

struct shmid_ds {
    struct ipc_perm shm_perm;
    int shm_segsz;
    time_t shm_atime;
    unsigned long int __unused1;
    time_t shm_dtime;
    unsigned long int __unused2;
    time_t shm_ctime;
    unsigned long int __unused3;
    pid_t shm_cpid;
    pid_t shm_lpid;
    shmatt_t shm_nattch;
    unsigned long int __unused4;
    unsigned long int __unused5;
};

typedef uint32_t __ss_aligntype;

#define SO_RCVLOWAT	18
#define SO_SNDLOWAT	19
#define SO_RCVTIMEO	20
#define SO_SNDTIMEO	21

#define _STAT_VER	3

struct stat {
    dev_t st_dev;
    unsigned short __pad1;
    unsigned long int st_ino;
    mode_t st_mode;
    nlink_t st_nlink;
    uid_t st_uid;
    gid_t st_gid;
    dev_t st_rdev;
    unsigned short __pad2;
    off_t st_size;
    blksize_t st_blksize;
    blkcnt_t st_blocks;
    struct timespec st_atim;
    struct timespec st_mtim;
    struct timespec st_ctim;
    unsigned long int __unused4;
    unsigned long int __unused5;
};
struct stat64 {
    dev_t st_dev;
    unsigned int __pad1;
    ino_t __st_ino;
    mode_t st_mode;
    nlink_t st_nlink;
    uid_t st_uid;
    gid_t st_gid;
    dev_t st_rdev;
    unsigned int __pad2;
    off64_t st_size;
    blksize_t st_blksize;
    blkcnt64_t st_blocks;
    struct timespec st_atim;
    struct timespec st_mtim;
    struct timespec st_ctim;
    ino64_t st_ino;
};

struct statfs {
    int f_type;
    int f_bsize;
    fsblkcnt_t f_blocks;
    fsblkcnt_t f_bfree;
    fsblkcnt_t f_bavail;
    fsfilcnt_t f_files;
    fsfilcnt_t f_ffree;
    fsid_t f_fsid;
    int f_namelen;
    int f_frsize;
    int f_spare[5];
};
struct statfs64 {
    int f_type;
    int f_bsize;
    fsblkcnt64_t f_blocks;
    fsblkcnt64_t f_bfree;
    fsblkcnt64_t f_bavail;
    fsfilcnt64_t f_files;
    fsfilcnt64_t f_ffree;
    fsid_t f_fsid;
    int f_namelen;
    int f_frsize;
    int f_spare[5];
};

struct statvfs {
    unsigned long int f_bsize;
    unsigned long int f_frsize;
    fsblkcnt_t f_blocks;
    fsblkcnt_t f_bfree;
    fsblkcnt_t f_bavail;
    fsfilcnt_t f_files;
    fsfilcnt_t f_ffree;
    fsfilcnt_t f_favail;
    unsigned long int f_fsid;
    int __f_unused;
    unsigned long int f_flag;
    unsigned long int f_namemax;
    int __f_spare[6];
};
struct statvfs64 {
    unsigned long int f_bsize;
    unsigned long int f_frsize;
    fsblkcnt64_t f_blocks;
    fsblkcnt64_t f_bfree;
    fsblkcnt64_t f_bavail;
    fsfilcnt64_t f_files;
    fsfilcnt64_t f_ffree;
    fsfilcnt64_t f_favail;
    unsigned long int f_fsid;
    int __f_unused;
    unsigned long int f_flag;
    unsigned long int f_namemax;
    int __f_spare[6];
};

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

typedef int32_t ssize_t;

#define __FDSET_LONGS	32

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

#define OLCUC	0000002
#define ONLCR	0000004
#define XCASE	0000004
#define NLDLY	0000400
#define CR1	0001000
#define IUCLC	0001000
#define CR2	0002000
#define CR3	0003000
#define CRDLY	0003000
#define TAB1	0004000
#define TAB2	0010000
#define TAB3	0014000
#define TABDLY	0014000
#define BS1	0020000
#define BSDLY	0020000
#define VT1	0040000
#define VTDLY	0040000
#define FF1	0100000
#define FFDLY	0100000

#define VSUSP	10
#define VEOL	11
#define VREPRINT	12
#define VDISCARD	13
#define VWERASE	14
#define VEOL2	16
#define VMIN	6
#define VSWTC	7
#define VSTART	8
#define VSTOP	9

#define IXON	0002000
#define IXOFF	0010000

#define CS6	0000020
#define CS7	0000040
#define CS8	0000060
#define CSIZE	0000060
#define CSTOPB	0000100
#define CREAD	0000200
#define PARENB	0000400
#define PARODD	0001000
#define HUPCL	0002000
#define CLOCAL	0004000
#define VTIME	5

#define ISIG	0000001
#define ICANON	0000002
#define ECHOE	0000020
#define ECHOK	0000040
#define ECHONL	0000100
#define NOFLSH	0000200
#define TOSTOP	0000400
#define ECHOCTL	0001000
#define ECHOPRT	0002000
#define ECHOKE	0004000
#define FLUSHO	0010000
#define PENDIN	0040000
#define IEXTEN	0100000

typedef int greg_t;

#define NGREG	19

typedef greg_t gregset_t[19];

struct _libc_fpreg {
    unsigned short significand[4];
    unsigned short exponent;
};

struct _libc_fpstate {
    unsigned long int cw;
    unsigned long int sw;
    unsigned long int tag;
    unsigned long int ipoff;
    unsigned long int cssel;
    unsigned long int dataoff;
    unsigned long int datasel;
    struct _libc_fpreg _st[8];
    unsigned long int status;
};
typedef struct _libc_fpstate *fpregset_t;

typedef struct {
    gregset_t gregs;
    fpregset_t fpregs;
    unsigned long int oldmask;
    unsigned long int cr2;
} mcontext_t;

typedef struct ucontext {
    unsigned long int uc_flags;
    struct ucontext *uc_link;
    stack_t uc_stack;
    mcontext_t uc_mcontext;
    sigset_t uc_sigmask;
    struct _libc_fpstate __fpregs_mem;
} ucontext_t;

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

struct lastlog {
    time_t ll_time;
    char ll_line[UT_LINESIZE];
    char ll_host[UT_HOSTSIZE];
};

struct utmp {
    short ut_type;
    pid_t ut_pid;
    char ut_line[UT_LINESIZE];
    char ut_id[4];
    char ut_user[UT_NAMESIZE];
    char ut_host[UT_HOSTSIZE];
    struct exit_status ut_exit;
    long int ut_session;
    struct timeval ut_tv;
    int32_t ut_addr_v6[4];
    char __unused[20];
};

struct utmpx {
    short ut_type;
    pid_t ut_pid;
    char ut_line[UT_LINESIZE];
    char ut_id[4];
    char ut_user[UT_NAMESIZE];
    char ut_host[UT_HOSTSIZE];
    struct exit_status ut_exit;
    long int ut_session;
    struct timeval ut_tv;
    int32_t ut_addr_v6[4];
    char __unused[20];
};

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

11.4. Interfaces for libm

Table 11-33 defines the library name and shared object name for the libm library

The behavior of the interfaces in this library is specified by the following specifications:

11.5. Data Definitions for libm

This section defines global identifiers and their values that are associated with interfaces contained in libm. These definitions are organized into groups that correspond to system headers. This convention is used as a convenience for the reader, and does not imply the existence of these headers, or their content. Where an interface is defined as requiring a particular system header file all of the data definitions for that system header file presented here shall be in effect.

This section gives data definitions to promote binary application portability, not to repeat source interface definitions available elsewhere. System providers and application developers should use this ABI to supplement - not to replace - source interface definition specifications.

This specification uses the ISO C (1999) C Language as the reference programming language, and data definitions are specified in ISO C format. The C language is used here as a convenient notation. Using a C language description of these data objects does not preclude their use by other programming languages.

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

#define FE_INVALID	0x01
#define FE_DIVBYZERO	0x04
#define FE_OVERFLOW	0x08
#define FE_UNDERFLOW	0x10
#define FE_INEXACT	0x20

#define FE_ALL_EXCEPT	\
	(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)

#define FE_TONEAREST	0
#define FE_DOWNWARD	0x400
#define FE_UPWARD	0x800
#define FE_TOWARDZERO	0xc00

typedef unsigned short fexcept_t;

typedef struct {
    unsigned short __control_word;
    unsigned short __unused1;
    unsigned short __status_word;
    unsigned short __unused2;
    unsigned short __tags;
    unsigned short __unused3;
    unsigned int __eip;
    unsigned short __cs_selector;
    unsigned int __opcode:11;
    unsigned int __unused4:5;
    unsigned int __data_offset;
    unsigned short __data_selector;
    unsigned short __unused5;
} fenv_t;

#define FE_DFL_ENV	((__const fenv_t *) -1)

#define fpclassify(x)	\
	(sizeof (x) == sizeof (float) ? __fpclassifyf (x) :sizeof (x) == sizeof (double) ? __fpclassify (x) : __fpclassifyl (x))
#define signbit(x)	\
	(sizeof (x) == sizeof (float)? __signbitf (x): sizeof (x) == sizeof (double)? __signbit (x) : __signbitl (x))
#define isfinite(x)	\
     (sizeof (x) == sizeof (float) ? __finitef (x) : sizeof (x) == sizeof (double)? __finite (x) : __finitel (x))
#define isinf(x)	\
     (sizeof (x) == sizeof (float) ? __isinff (x): sizeof (x) == sizeof (double) ? __isinf (x) : __isinfl (x))
#define isnan(x)	\
     (sizeof (x) == sizeof (float) ? __isnanf (x)  : sizeof (x) == sizeof (double) ? __isnan (x) : __isnanl (x))

#define HUGE_VALL	0x1.0p32767L

#define FP_ILOGB0	(-2147483647 - 1)
#define FP_ILOGBNAN	(-2147483647 - 1)

extern int __fpclassifyl(long double);
extern long double exp2l(long double);
extern int __signbitl(long double);

11.6. Interface Definitions for libm

The interfaces defined on the following pages are included in libm and are defined by this specification. Unless otherwise noted, these interfaces shall be included in the source standard.

Other interfaces listed in Section 11.4 shall behave as described in the referenced base document. For interfaces referencing LSB and not listed below, please see the generic part of the specification.

__fpclassifyl

11.7. Interfaces for libpthread

Table 11-37 defines the library name and shared object name for the libpthread library

The behavior of the interfaces in this library is specified by the following specifications:

11.8. Data Definitions for libpthread

This section defines global identifiers and their values that are associated with interfaces contained in libpthread. These definitions are organized into groups that correspond to system headers. This convention is used as a convenience for the reader, and does not imply the existence of these headers, or their content. Where an interface is defined as requiring a particular system header file all of the data definitions for that system header file presented here shall be in effect.

This section gives data definitions to promote binary application portability, not to repeat source interface definitions available elsewhere. System providers and application developers should use this ABI to supplement - not to replace - source interface definition specifications.

This specification uses the ISO C (1999) C Language as the reference programming language, and data definitions are specified in ISO C format. The C language is used here as a convenient notation. Using a C language description of these data objects does not preclude their use by other programming languages.

#define __SIZEOF_PTHREAD_BARRIER_T	20

typedef union {
    char __size[__SIZEOF_PTHREAD_BARRIER_T];
    long int __align;
} pthread_barrier_t;

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

11.9. Interfaces for libgcc_s

Table 11-43 defines the library name and shared object name for the libgcc_s library

The behavior of the interfaces in this library is specified by the following specifications:

11.10. Data Definitions for libgcc_s

This section defines global identifiers and their values that are associated with interfaces contained in libgcc_s. These definitions are organized into groups that correspond to system headers. This convention is used as a convenience for the reader, and does not imply the existence of these headers, or their content. Where an interface is defined as requiring a particular system header file all of the data definitions for that system header file presented here shall be in effect.

This section gives data definitions to promote binary application portability, not to repeat source interface definitions available elsewhere. System providers and application developers should use this ABI to supplement - not to replace - source interface definition specifications.

This specification uses the ISO C (1999) C Language as the reference programming language, and data definitions are specified in ISO C format. The C language is used here as a convenient notation. Using a C language description of these data objects does not preclude their use by other programming languages.

typedef _Unwind_Reason_Code(*_Unwind_Stop_Fn) (int version,
					       _Unwind_Action actions,
					       _Unwind_Exception_Class
					       exceptionClass,
					       struct _Unwind_Exception *
					       exceptionObject,
					       struct _Unwind_Context *
					       context,
					       void *stop_parameter);

typedef _Unwind_Reason_Code(*_Unwind_Trace_Fn) (struct _Unwind_Context *,
						void *);
extern void _Unwind_DeleteException(struct _Unwind_Exception *);
extern fde *_Unwind_Find_FDE(void *, struct dwarf_eh_base *);
extern _Unwind_Ptr _Unwind_GetDataRelBase(struct _Unwind_Context *);
extern _Unwind_Word _Unwind_GetGR(struct _Unwind_Context *, int);
extern _Unwind_Ptr _Unwind_GetIP(struct _Unwind_Context *);
extern _Unwind_Ptr _Unwind_GetLanguageSpecificData(struct _Unwind_Context
						   *, unsigned int);
extern _Unwind_Ptr _Unwind_GetRegionStart(struct _Unwind_Context *);
extern _Unwind_Reason_Code _Unwind_RaiseException(struct _Unwind_Exception
						  *);
extern void _Unwind_SetIP(struct _Unwind_Context *, unsigned int);
extern void _Unwind_Resume(struct _Unwind_Exception *);
extern void _Unwind_SetGR(struct _Unwind_Context *, int, u_int64_t);
extern _Unwind_Ptr _Unwind_GetTextRelBase(struct _Unwind_Context *);
extern _Unwind_Ptr _Unwind_ForcedUnwind(struct _Unwind_Exception *,
					_Unwind_Stop_Fn, void *);
extern _Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn, void *);
extern _Unwind_Reason_Code _Unwind_GetCFA(struct _Unwind_Context *);
extern _Unwind_Reason_Code _Unwind_Resume_or_Rethrow(struct
						     _Unwind_Exception *);
extern void *_Unwind_FindEnclosingFunction(void *);

11.11. Interface Definitions for libgcc_s

The interfaces defined on the following pages are included in libgcc_s and are defined by this specification. Unless otherwise noted, these interfaces shall be included in the source standard.

Other interfaces listed in Section 11.9 shall behave as described in the referenced base document. For interfaces referencing LSB and not listed below, please see the generic part of the specification.

_Unwind_DeleteException

_Unwind_Find_FDE

_Unwind_ForcedUnwind

_Unwind_GetDataRelBase

_Unwind_GetGR

_Unwind_GetIP

_Unwind_GetLanguageSpecificData

_Unwind_GetRegionStart

_Unwind_GetTextRelBase

_Unwind_RaiseException

_Unwind_Resume

_Unwind_SetGR

_Unwind_SetIP

11.12. Interfaces for libdl

Table 11-45 defines the library name and shared object name for the libdl library

The behavior of the interfaces in this library is specified by the following specifications:

11.13. Data Definitions for libdl

This section defines global identifiers and their values that are associated with interfaces contained in libdl. These definitions are organized into groups that correspond to system headers. This convention is used as a convenience for the reader, and does not imply the existence of these headers, or their content. Where an interface is defined as requiring a particular system header file all of the data definitions for that system header file presented here shall be in effect.

This section gives data definitions to promote binary application portability, not to repeat source interface definitions available elsewhere. System providers and application developers should use this ABI to supplement - not to replace - source interface definition specifications.

This specification uses the ISO C (1999) C Language as the reference programming language, and data definitions are specified in ISO C format. The C language is used here as a convenient notation. Using a C language description of these data objects does not preclude their use by other programming languages.

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

11.14. Interfaces for libcrypt

Table 11-47 defines the library name and shared object name for the libcrypt library

The behavior of the interfaces in this library is specified by the following specifications:

12.1. Interfaces for libz

Table 12-1 defines the library name and shared object name for the libz library

12.2. Data Definitions for libz

This section defines global identifiers and their values that are associated with interfaces contained in libz. These definitions are organized into groups that correspond to system headers. This convention is used as a convenience for the reader, and does not imply the existence of these headers, or their content. Where an interface is defined as requiring a particular system header file all of the data definitions for that system header file presented here shall be in effect.

This section gives data definitions to promote binary application portability, not to repeat source interface definitions available elsewhere. System providers and application developers should use this ABI to supplement - not to replace - source interface definition specifications.

This specification uses the ISO C (1999) C Language as the reference programming language, and data definitions are specified in ISO C format. The C language is used here as a convenient notation. Using a C language description of these data objects does not preclude their use by other programming languages.

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

12.3. Interfaces for libncurses

Table 12-2 defines the library name and shared object name for the libncurses library

12.4. Data Definitions for libncurses

This section defines global identifiers and their values that are associated with interfaces contained in libncurses. These definitions are organized into groups that correspond to system headers. This convention is used as a convenience for the reader, and does not imply the existence of these headers, or their content. Where an interface is defined as requiring a particular system header file all of the data definitions for that system header file presented here shall be in effect.

This section gives data definitions to promote binary application portability, not to repeat source interface definitions available elsewhere. System providers and application developers should use this ABI to supplement - not to replace - source interface definition specifications.

This specification uses the ISO C (1999) C Language as the reference programming language, and data definitions are specified in ISO C format. The C language is used here as a convenient notation. Using a C language description of these data objects does not preclude their use by other programming languages.

/*
 * This header is architecture neutral
 * Please refer to the generic specification for details
 */

12.5. Interfaces for libutil

Table 12-3 defines the library name and shared object name for the libutil library

The behavior of the interfaces in this library is specified by the following specifications:

13.1. Package Dependencies

The LSB runtime environment shall provide the following dependencies.

This dependency shall have a version of 3.0.

Other LSB modules may add additional dependencies; such dependencies shall have the format lsb-module-ia32.

13.2. Package Architecture Considerations

All packages must specify an architecture of i486. A LSB runtime environment must accept an architecture of i486 even if the native architecture is different.

The archnum value in the Lead Section shall be 0x0001.