#ifndef COMPILER_H
#define COMPILER_H
/*
* Doxygen can't cope with some of the more esoteric areas of C, so we
* make its life simpler.
*
*/
#ifdef DOXYGEN
#define __attribute__(x)
#endif
/** @file
*
* Global compiler definitions.
*
* This file is implicitly included by every @c .c file in Etherboot.
* It defines global macros such as DBG().
*
* We arrange for each object to export the symbol @c obj_OBJECT
* (where @c OBJECT is the object name, e.g. @c rtl8139) as a global
* symbol, so that the linker can drag in selected object files from
* the library using <tt> -u obj_OBJECT </tt>.
*
*/
/* Force visibility of all symbols to "hidden", i.e. inform gcc that
* all symbol references resolve strictly within our final binary.
* This avoids unnecessary PLT/GOT entries on x86_64.
*
* This is a stronger claim than specifying "-fvisibility=hidden",
* since it also affects symbols marked with "extern".
*/
#ifndef ASSEMBLY
#if __GNUC__ >= 4
#pragma GCC visibility push(hidden)
#endif
#endif /* ASSEMBLY */
#undef _S1
#undef _S2
#undef _C1
#undef _C2
/** Concatenate non-expanded arguments */
#define _C1( x, y ) x ## y
/** Concatenate expanded arguments */
#define _C2( x, y ) _C1 ( x, y )
/** Stringify non-expanded argument */
#define _S1( x ) #x
/** Stringify expanded argument */
#define _S2( x ) _S1 ( x )
/* Assembler section types */
#ifdef ASSEMBLY
#define PROGBITS _C2 ( ASM_TCHAR, progbits )
#define NOBITS _C2 ( ASM_TCHAR, nobits )
#else
#define PROGBITS_OPS _S2 ( ASM_TCHAR_OPS ) "progbits"
#define PROGBITS _S2 ( ASM_TCHAR ) "progbits"
#define NOBITS_OPS _S2 ( ASM_TCHAR_OPS ) "nobits"
#define NOBITS _S2 ( ASM_TCHAR ) "nobits"
#endif
/**
* @defgroup symmacros Macros to provide or require explicit symbols
* @{
*/
/**
* Provide a symbol within this object file
*
* @v symbol Symbol name
*/
#ifdef ASSEMBLY
#define PROVIDE_SYMBOL( symbol ) \
.section ".provided", "a", NOBITS ; \
.hidden symbol ; \
.globl symbol ; \
symbol: ; \
.previous
#else
#define PROVIDE_SYMBOL( symbol ) \
char symbol[0] \
__attribute__ (( section ( ".provided" ) ))
#endif
/**
* Request a symbol
*
* @v symbol Symbol name
*
* Request a symbol to be included within the link. If the symbol
* cannot be found, the link will succeed anyway.
*/
#ifdef ASSEMBLY
#define REQUEST_SYMBOL( symbol ) \
.equ __request_ ## symbol, symbol
#else
#define REQUEST_SYMBOL( symbol ) \
__asm__ ( ".equ __request_" #symbol ", " #symbol )
#endif
/**
* Require a symbol
*
* @v symbol Symbol name
*
* Require a symbol to be included within the link. If the symbol
* cannot be found, the link will fail.
*
* To use this macro within a file, you must also specify the file's
* "requiring symbol" using the REQUIRING_SYMBOL() or
* PROVIDE_REQUIRING_SYMBOL() macros.
*/
#ifdef ASSEMBLY
#define REQUIRE_SYMBOL( symbol ) \
.reloc __requiring_symbol__, RELOC_TYPE_NONE, symbol
#else
#define REQUIRE_SYMBOL( symbol ) \
__asm__ ( ".reloc __requiring_symbol__, " \
_S2 ( RELOC_TYPE_NONE ) ", " #symbol )
#endif
/**
* Specify the file's requiring symbol
*
* @v symbol Symbol name
*
* REQUIRE_SYMBOL() works by defining a dummy relocation record
* against a nominated "requiring symbol". The presence of the
* nominated requiring symbol will drag in all of the symbols
* specified using REQUIRE_SYMBOL().
*/
#ifdef ASSEMBLY
#define REQUIRING_SYMBOL( symbol ) \
.equ __requiring_symbol__, symbol
#else
#define REQUIRING_SYMBOL( symbol ) \
__asm__ ( ".equ __requiring_symbol__, " #symbol )
#endif
/**
* Provide a file's requiring symbol
*
* If the file contains no symbols that can be used as the requiring
* symbol, you can provide a dummy one-byte-long symbol using
* PROVIDE_REQUIRING_SYMBOL().
*/
#ifdef ASSEMBLY
#define PROVIDE_REQUIRING_SYMBOL() \
.section ".tbl.requiring_symbols", "a", PROGBITS ; \
__requiring_symbol__: .byte 0 ; \
.size __requiring_symbol__, . - __requiring_symbol__ ; \
.previous
#else
#define PROVIDE_REQUIRING_SYMBOL() \
__asm__ ( ".section \".tbl.requiring_symbols\", " \
" \"a\", " PROGBITS "\n" \
"__requiring_symbol__:\t.byte 0\n" \
".size __requiring_symbol__, " \
" . - __requiring_symbol__\n" \
".previous" )
#endif
/** @} */
/**
* @defgroup objmacros Macros to provide or require explicit objects
* @{
*/
#define PREFIX_OBJECT( _prefix ) _C2 ( _prefix, OBJECT )
#define OBJECT_SYMBOL PREFIX_OBJECT ( obj_ )
/** Always provide the symbol for the current object (defined by -DOBJECT) */
PROVIDE_SYMBOL ( OBJECT_SYMBOL );
/**
* Request an object
*
* @v object Object name
*
* Request an object to be included within the link. If the object
* cannot be found, the link will succeed anyway.
*/
#define REQUEST_OBJECT( object ) REQUEST_SYMBOL ( obj_ ## object )
/**
* Require an object
*
* @v object Object name
*
* Require an object to be included within the link. If the object
* cannot be found, the link will fail.
*
* To use this macro within a file, you must also specify the file's
* "requiring symbol" using the REQUIRING_SYMBOL() or
* PROVIDE_REQUIRING_SYMBOL() macros.
*/
#define REQUIRE_OBJECT( object ) REQUIRE_SYMBOL ( obj_ ## object )
/** @} */
/** Select file identifier for errno.h (if used) */
#define ERRFILE PREFIX_OBJECT ( ERRFILE_ )
#ifndef ASSEMBLY
/** Declare a function as weak (use *before* the definition)
*
* Due to a bug in at least GCC 4.4.4 and earlier, weak symbols may be
* inlined if they have hidden visibility (see above for why hidden
* visibility is used). This results in the non-weak symbol never
* being used, so explicitly mark the function as noinline to prevent
* inlining.
*/
#define __weak __attribute__ (( weak, noinline ))
#endif
/** @defgroup dbg Debugging infrastructure
* @{
*/
/** @def DBG
*
* Print a debugging message.
*
* The debug level is set at build time by specifying the @c DEBUG=
* parameter on the @c make command line. For example, to enable
* debugging for the PCI bus functions (in pci.c) in a @c .dsk image
* for the @c rtl8139 card, you could use the command line
*
* @code
*
* make bin/rtl8139.dsk DEBUG=pci
*
* @endcode
*
* This will enable the debugging statements (DBG()) in pci.c. If
* debugging is not enabled, DBG() statements will be ignored.
*
* You can enable debugging in several objects simultaneously by
* separating them with commas, as in
*
* @code
*
* make bin/rtl8139.dsk DEBUG=pci,buffer,heap
*
* @endcode
*
* You can increase the debugging level for an object by specifying it
* with @c :N, where @c N is the level, as in
*
* @code
*
* make bin/rtl8139.dsk DEBUG=pci,buffer:2,heap
*
* @endcode
*
* which would enable debugging for the PCI, buffer-handling and
* heap-allocation code, with the buffer-handling code at level 2.
*
*/
#ifndef DBGLVL_MAX
#define NDEBUG
#define DBGLVL_MAX 0
#endif
#ifndef DBGLVL_DFLT
#define DBGLVL_DFLT DBGLVL_MAX
#endif
#ifndef ASSEMBLY
/** printf() for debugging */
extern void __attribute__ (( format ( printf, 1, 2 ) ))
dbg_printf ( const char *fmt, ... );
extern void dbg_autocolourise ( unsigned long id );
extern void dbg_decolourise ( void );
extern void dbg_hex_dump_da ( unsigned long dispaddr,
const void *data, unsigned long len );
extern void dbg_md5_da ( unsigned long dispaddr,
const void *data, unsigned long len );
extern void dbg_pause ( void );
extern void dbg_more ( void );
/* Allow for selective disabling of enabled debug levels */
#define __debug_disable( object ) _C2 ( __debug_disable_, object )
char __debug_disable(OBJECT) = ( DBGLVL_MAX & ~DBGLVL_DFLT );
#define DBG_DISABLE_OBJECT( object, level ) do { \
extern char __debug_disable(object); \
__debug_disable(object) |= (level); \
} while ( 0 )
#define DBG_ENABLE_OBJECT( object, level ) do { \
extern char __debug_disable(object); \
__debug_disable(object) &= ~(level); \
} while ( 0 )
#if DBGLVL_MAX
#define DBGLVL ( DBGLVL_MAX & ~__debug_disable(OBJECT) )
#define DBG_DISABLE( level ) do { \
__debug_disable(OBJECT) |= ( (level) & DBGLVL_MAX ); \
} while ( 0 )
#define DBG_ENABLE( level ) do { \
__debug_disable(OBJECT) &= ~( (level) & DBGLVL_MAX ); \
} while ( 0 )
#else
#define DBGLVL 0
#define DBG_DISABLE( level ) do { } while ( 0 )
#define DBG_ENABLE( level ) do { } while ( 0 )
#endif
#define DBGLVL_LOG 1
#define DBG_LOG ( DBGLVL & DBGLVL_LOG )
#define DBGLVL_EXTRA 2
#define DBG_EXTRA ( DBGLVL & DBGLVL_EXTRA )
#define DBGLVL_PROFILE 4
#define DBG_PROFILE ( DBGLVL & DBGLVL_PROFILE )
#define DBGLVL_IO 8
#define DBG_IO ( DBGLVL & DBGLVL_IO )
/**
* Print debugging message if we are at a certain debug level
*
* @v level Debug level
* @v ... printf() argument list
*/
#define DBG_IF( level, ... ) do { \
if ( DBG_ ## level ) { \
dbg_printf ( __VA_ARGS__ ); \
} \
} while ( 0 )
/**
* Print a hex dump if we are at a certain debug level
*
* @v level Debug level
* @v dispaddr Display address
* @v data Data to print
* @v len Length of data
*/
#define DBG_HDA_IF( level, dispaddr, data, len ) do { \
if ( DBG_ ## level ) { \
union { \
unsigned long ul; \
typeof ( dispaddr ) raw; \
} da; \
da.ul = 0; \
da.raw = dispaddr; \
dbg_hex_dump_da ( da.ul, data, len ); \
} \
} while ( 0 )
/**
* Print a hex dump if we are at a certain debug level
*
* @v level Debug level
* @v data Data to print
* @v len Length of data
*/
#define DBG_HD_IF( level, data, len ) do { \
const void *_data = data; \
DBG_HDA_IF ( level, _data, _data, len ); \
} while ( 0 )
/**
* Print an MD5 checksum if we are at a certain debug level
*
* @v level Debug level
* @v dispaddr Display address
* @v data Data to print
* @v len Length of data
*/
#define DBG_MD5A_IF( level, dispaddr, data, len ) do { \
if ( DBG_ ## level ) { \
union { \
unsigned long ul; \
typeof ( dispaddr ) raw; \
} da; \
da.ul = 0; \
da.raw = dispaddr; \
dbg_md5_da ( da.ul, data, len ); \
} \
} while ( 0 )
/**
* Print an MD5 checksum if we are at a certain debug level
*
* @v level Debug level
* @v data Data to print
* @v len Length of data
*/
#define DBG_MD5_IF( level, data, len ) do { \
const void *_data = data; \
DBG_MD5A_IF ( level, _data, _data, len ); \
} while ( 0 )
/**
* Prompt for key press if we are at a certain debug level
*
* @v level Debug level
*/
#define DBG_PAUSE_IF( level, ... ) do { \
if ( DBG_ ## level ) { \
dbg_pause(); \
} \
} while ( 0 )
/**
* Prompt for more output data if we are at a certain debug level
*
* @v level Debug level
*/
#define DBG_MORE_IF( level, ... ) do { \
if ( DBG_ ## level ) { \
dbg_more(); \
} \
} while ( 0 )
/**
* Select colour for debug messages if we are at a certain debug level
*
* @v level Debug level
* @v id Message stream ID
*/
#define DBG_AC_IF( level, id ) do { \
if ( DBG_ ## level ) { \
union { \
unsigned long ul; \
typeof ( id ) raw; \
} dbg_stream; \
dbg_stream.ul = 0; \
dbg_stream.raw = id; \
dbg_autocolourise ( dbg_stream.ul ); \
} \
} while ( 0 )
/**
* Revert colour for debug messages if we are at a certain debug level
*
* @v level Debug level
*/
#define DBG_DC_IF( level ) do { \
if ( DBG_ ## level ) { \
dbg_decolourise(); \
} \
} while ( 0 )
/* Autocolourising versions of the DBGxxx_IF() macros */
#define DBGC_IF( level, id, ... ) do { \
DBG_AC_IF ( level, id ); \
DBG_IF ( level, __VA_ARGS__ ); \
DBG_DC_IF ( level ); \
} while ( 0 )
#define DBGC_HDA_IF( level, id, ... ) do { \
DBG_AC_IF ( level, id ); \
DBG_HDA_IF ( level, __VA_ARGS__ ); \
DBG_DC_IF ( level ); \
} while ( 0 )
#define DBGC_HD_IF( level, id, ... ) do { \
DBG_AC_IF ( level, id ); \
DBG_HD_IF ( level, __VA_ARGS__ ); \
DBG_DC_IF ( level ); \
} while ( 0 )
#define DBGC_MD5A_IF( level, id, ... ) do { \
DBG_AC_IF ( level, id ); \
DBG_MD5A_IF ( level, __VA_ARGS__ ); \
DBG_DC_IF ( level ); \
} while ( 0 )
#define DBGC_MD5_IF( level, id, ... ) do { \
DBG_AC_IF ( level, id ); \
DBG_MD5_IF ( level, __VA_ARGS__ ); \
DBG_DC_IF ( level ); \
} while ( 0 )
#define DBGC_PAUSE_IF( level, id ) do { \
DBG_AC_IF ( level, id ); \
DBG_PAUSE_IF ( level ); \
DBG_DC_IF ( level ); \
} while ( 0 )
#define DBGC_MORE_IF( level, id ) do { \
DBG_AC_IF ( level, id ); \
DBG_MORE_IF ( level ); \
DBG_DC_IF ( level ); \
} while ( 0 )
/* Versions of the DBGxxx_IF() macros that imply DBGxxx_IF( LOG, ... )*/
#define DBG( ... ) DBG_IF ( LOG, ##__VA_ARGS__ )
#define DBG_HDA( ... ) DBG_HDA_IF ( LOG, ##__VA_ARGS__ )
#define DBG_HD( ... ) DBG_HD_IF ( LOG, ##__VA_ARGS__ )
#define DBG_MD5A( ... ) DBG_MD5A_IF ( LOG, ##__VA_ARGS__ )
#define DBG_MD5( ... ) DBG_MD5_IF ( LOG, ##__VA_ARGS__ )
#define DBG_PAUSE( ... ) DBG_PAUSE_IF ( LOG, ##__VA_ARGS__ )
#define DBG_MORE( ... ) DBG_MORE_IF ( LOG, ##__VA_ARGS__ )
#define DBGC( ... ) DBGC_IF ( LOG, ##__VA_ARGS__ )
#define DBGC_HDA( ... ) DBGC_HDA_IF ( LOG, ##__VA_ARGS__ )
#define DBGC_HD( ... ) DBGC_HD_IF ( LOG, ##__VA_ARGS__ )
#define DBGC_MD5A( ... ) DBGC_MD5A_IF ( LOG, ##__VA_ARGS__ )
#define DBGC_MD5( ... ) DBGC_MD5_IF ( LOG, ##__VA_ARGS__ )
#define DBGC_PAUSE( ... ) DBGC_PAUSE_IF ( LOG, ##__VA_ARGS__ )
#define DBGC_MORE( ... ) DBGC_MORE_IF ( LOG, ##__VA_ARGS__ )
/* Versions of the DBGxxx_IF() macros that imply DBGxxx_IF( EXTRA, ... )*/
#define DBG2( ... ) DBG_IF ( EXTRA, ##__VA_ARGS__ )
#define DBG2_HDA( ... ) DBG_HDA_IF ( EXTRA, ##__VA_ARGS__ )
#define DBG2_HD( ... ) DBG_HD_IF ( EXTRA, ##__VA_ARGS__ )
#define DBG2_MD5A( ... ) DBG_MD5A_IF ( EXTRA, ##__VA_ARGS__ )
#define DBG2_MD5( ... ) DBG_MD5_IF ( EXTRA, ##__VA_ARGS__ )
#define DBG2_PAUSE( ... ) DBG_PAUSE_IF ( EXTRA, ##__VA_ARGS__ )
#define DBG2_MORE( ... ) DBG_MORE_IF ( EXTRA, ##__VA_ARGS__ )
#define DBGC2( ... ) DBGC_IF ( EXTRA, ##__VA_ARGS__ )
#define DBGC2_HDA( ... ) DBGC_HDA_IF ( EXTRA, ##__VA_ARGS__ )
#define DBGC2_HD( ... ) DBGC_HD_IF ( EXTRA, ##__VA_ARGS__ )
#define DBGC2_MD5A( ... ) DBGC_MD5A_IF ( EXTRA, ##__VA_ARGS__ )
#define DBGC2_MD5( ... ) DBGC_MD5_IF ( EXTRA, ##__VA_ARGS__ )
#define DBGC2_PAUSE( ... ) DBGC_PAUSE_IF ( EXTRA, ##__VA_ARGS__ )
#define DBGC2_MORE( ... ) DBGC_MORE_IF ( EXTRA, ##__VA_ARGS__ )
/* Versions of the DBGxxx_IF() macros that imply DBGxxx_IF( PROFILE, ... )*/
#define DBGP( ... ) DBG_IF ( PROFILE, ##__VA_ARGS__ )
#define DBGP_HDA( ... ) DBG_HDA_IF ( PROFILE, ##__VA_ARGS__ )
#define DBGP_HD( ... ) DBG_HD_IF ( PROFILE, ##__VA_ARGS__ )
#define DBGP_MD5A( ... ) DBG_MD5A_IF ( PROFILE, ##__VA_ARGS__ )
#define DBGP_MD5( ... ) DBG_MD5_IF ( PROFILE, ##__VA_ARGS__ )
#define DBGP_PAUSE( ... ) DBG_PAUSE_IF ( PROFILE, ##__VA_ARGS__ )
#define DBGP_MORE( ... ) DBG_MORE_IF ( PROFILE, ##__VA_ARGS__ )
#define DBGCP( ... ) DBGC_IF ( PROFILE, ##__VA_ARGS__ )
#define DBGCP_HDA( ... ) DBGC_HDA_IF ( PROFILE, ##__VA_ARGS__ )
#define DBGCP_HD( ... ) DBGC_HD_IF ( PROFILE, ##__VA_ARGS__ )
#define DBGCP_MD5A( ... ) DBGC_MD5A_IF ( PROFILE, ##__VA_ARGS__ )
#define DBGCP_MD5( ... ) DBGC_MD5_IF ( PROFILE, ##__VA_ARGS__ )
#define DBGCP_PAUSE( ... ) DBGC_PAUSE_IF ( PROFILE, ##__VA_ARGS__ )
#define DBGCP_MORE( ... ) DBGC_MORE_IF ( PROFILE, ##__VA_ARGS__ )
/* Versions of the DBGxxx_IF() macros that imply DBGxxx_IF( IO, ... )*/
#define DBGIO( ... ) DBG_IF ( IO, ##__VA_ARGS__ )
#define DBGIO_HDA( ... ) DBG_HDA_IF ( IO, ##__VA_ARGS__ )
#define DBGIO_HD( ... ) DBG_HD_IF ( IO, ##__VA_ARGS__ )
#define DBGIO_MD5A( ... ) DBG_MD5A_IF ( IO, ##__VA_ARGS__ )
#define DBGIO_MD5( ... ) DBG_MD5_IF ( IO, ##__VA_ARGS__ )
#define DBGIO_PAUSE( ... ) DBG_PAUSE_IF ( IO, ##__VA_ARGS__ )
#define DBGIO_MORE( ... ) DBG_MORE_IF ( IO, ##__VA_ARGS__ )
#define DBGCIO( ... ) DBGC_IF ( IO, ##__VA_ARGS__ )
#define DBGCIO_HDA( ... ) DBGC_HDA_IF ( IO, ##__VA_ARGS__ )
#define DBGCIO_HD( ... ) DBGC_HD_IF ( IO, ##__VA_ARGS__ )
#define DBGCIO_MD5A( ... ) DBGC_MD5A_IF ( IO, ##__VA_ARGS__ )
#define DBGCIO_MD5( ... ) DBGC_MD5_IF ( IO, ##__VA_ARGS__ )
#define DBGCIO_PAUSE( ... ) DBGC_PAUSE_IF ( IO, ##__VA_ARGS__ )
#define DBGCIO_MORE( ... ) DBGC_MORE_IF ( IO, ##__VA_ARGS__ )
#endif /* ASSEMBLY */
/** @} */
/** @defgroup attrs Miscellaneous attributes
* @{
*/
#ifndef ASSEMBLY
/** Declare a variable or data structure as unused. */
#define __unused __attribute__ (( unused ))
/**
* Declare a function as pure - i.e. without side effects
*/
#define __pure __attribute__ (( pure ))
/**
* Declare a function as const - i.e. it does not access global memory
* (including dereferencing pointers passed to it) at all.
* Must also not call any non-const functions.
*/
#define __const __attribute__ (( const ))
/**
* Declare a function's pointer parameters as non-null - i.e. force
* compiler to check pointers at compile time and enable possible
* optimizations based on that fact
*/
#define __nonnull __attribute__ (( nonnull ))
/**
* Declare a pointer returned by a function as a unique memory address
* as returned by malloc-type functions.
*/
#define __malloc __attribute__ (( malloc ))
/**
* Declare a function as used.
*
* Necessary only if the function is called only from assembler code.
*/
#define __used __attribute__ (( used ))
/** Declare a data structure to be aligned with 16-byte alignment */
#define __aligned __attribute__ (( aligned ( 16 ) ))
/** Declare a function to be always inline */
#define __always_inline __attribute__ (( always_inline ))
/* Force all inline functions to not be instrumented
*
* This is required to cope with what seems to be a long-standing gcc
* bug, in which -finstrument-functions will cause instances of
* inlined functions to be reported as further calls to the
* *containing* function. This makes instrumentation very difficult
* to use.
*
* Work around this problem by adding the no_instrument_function
* attribute to all inlined functions.
*/
#define inline inline __attribute__ (( no_instrument_function ))
/**
* Shared data.
*
* To save space in the binary when multiple-driver images are
* compiled, uninitialised data areas can be shared between drivers.
* This will typically be used to share statically-allocated receive
* and transmit buffers between drivers.
*
* Use as e.g.
*
* @code
*
* struct {
* char rx_buf[NUM_RX_BUF][RX_BUF_SIZE];
* char tx_buf[TX_BUF_SIZE];
* } my_static_data __shared;
*
* @endcode
*
*/
#define __shared __asm__ ( "_shared_bss" ) __aligned
#endif /* ASSEMBLY */
/** @} */
/**
* Optimisation barrier
*/
#ifndef ASSEMBLY
#define barrier() __asm__ __volatile__ ( "" : : : "memory" )
#endif /* ASSEMBLY */
/**
* Array size
*/
#ifndef ASSEMBLY
#define ARRAY_SIZE(array) ( sizeof (array) / sizeof ( (array)[0] ) )
#endif /* ASSEMBLY */
/**
* @defgroup licences Licence declarations
*
* For reasons that are partly historical, various different files
* within the iPXE codebase have differing licences.
*
* @{
*/
/** Declare a file as being in the public domain
*
* This licence declaration is applicable when a file states itself to
* be in the public domain.
*/
#define FILE_LICENCE_PUBLIC_DOMAIN \
PROVIDE_SYMBOL ( PREFIX_OBJECT ( __licence__public_domain__ ) )
/** Declare a file as being under version 2 (or later) of the GNU GPL
*
* This licence declaration is applicable when a file states itself to
* be licensed under the GNU GPL; "either version 2 of the License, or
* (at your option) any later version".
*/
#define FILE_LICENCE_GPL2_OR_LATER \
PROVIDE_SYMBOL ( PREFIX_OBJECT ( __licence__gpl2_or_later__ ) )
/** Declare a file as being under version 2 of the GNU GPL
*
* This licence declaration is applicable when a file states itself to
* be licensed under version 2 of the GPL, and does not include the
* "or, at your option, any later version" clause.
*/
#define FILE_LICENCE_GPL2_ONLY \
PROVIDE_SYMBOL ( PREFIX_OBJECT ( __licence__gpl2_only__ ) )
/** Declare a file as being under any version of the GNU GPL
*
* This licence declaration is applicable when a file states itself to
* be licensed under the GPL, but does not specify a version.
*
* According to section 9 of the GPLv2, "If the Program does not
* specify a version number of this License, you may choose any
* version ever published by the Free Software Foundation".
*/
#define FILE_LICENCE_GPL_ANY \
PROVIDE_SYMBOL ( PREFIX_OBJECT ( __licence__gpl_any__ ) )
/** Declare a file as being under the three-clause BSD licence
*
* This licence declaration is applicable when a file states itself to
* be licensed under terms allowing redistribution in source and
* binary forms (with or without modification) provided that:
*
* redistributions of source code retain the copyright notice,
* list of conditions and any attached disclaimers
*
* redistributions in binary form reproduce the copyright notice,
* list of conditions and any attached disclaimers in the
* documentation and/or other materials provided with the
* distribution
*
* the name of the author is not used to endorse or promote
* products derived from the software without specific prior
* written permission
*
* It is not necessary for the file to explicitly state that it is
* under a "BSD" licence; only that the licensing terms be
* functionally equivalent to the standard three-clause BSD licence.
*/
#define FILE_LICENCE_BSD3 \
PROVIDE_SYMBOL ( PREFIX_OBJECT ( __licence__bsd3__ ) )
/** Declare a file as being under the two-clause BSD licence
*
* This licence declaration is applicable when a file states itself to
* be licensed under terms allowing redistribution in source and
* binary forms (with or without modification) provided that:
*
* redistributions of source code retain the copyright notice,
* list of conditions and any attached disclaimers
*
* redistributions in binary form reproduce the copyright notice,
* list of conditions and any attached disclaimers in the
* documentation and/or other materials provided with the
* distribution
*
* It is not necessary for the file to explicitly state that it is
* under a "BSD" licence; only that the licensing terms be
* functionally equivalent to the standard two-clause BSD licence.
*/
#define FILE_LICENCE_BSD2 \
PROVIDE_SYMBOL ( PREFIX_OBJECT ( __licence__bsd2__ ) )
/** Declare a file as being under the one-clause MIT-style licence
*
* This licence declaration is applicable when a file states itself to
* be licensed under terms allowing redistribution for any purpose
* with or without fee, provided that the copyright notice and
* permission notice appear in all copies.
*/
#define FILE_LICENCE_MIT \
PROVIDE_SYMBOL ( PREFIX_OBJECT ( __licence__mit__ ) )
/** Declare a file as being under GPLv2+ or UBDL
*
* This licence declaration is applicable when a file states itself to
* be licensed under the GNU GPL; "either version 2 of the License, or
* (at your option) any later version" and also states that it may be
* distributed under the terms of the Unmodified Binary Distribution
* Licence (as given in the file COPYING.UBDL).
*/
#define FILE_LICENCE_GPL2_OR_LATER_OR_UBDL \
PROVIDE_SYMBOL ( PREFIX_OBJECT ( __licence__gpl2_or_later_or_ubdl__ ) )
/** Declare a particular licence as applying to a file */
#define FILE_LICENCE( _licence ) FILE_LICENCE_ ## _licence
/** @} */
/* This file itself is under GPLv2+/UBDL */
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <bits/compiler.h>
#endif /* COMPILER_H */
