2005-04-08 15:01:17 +00:00
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#ifndef COMPILER_H
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#define COMPILER_H
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2005-05-18 14:42:02 +00:00
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/*
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* Doxygen can't cope with some of the more esoteric areas of C, so we
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* make its life simpler.
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*
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*/
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#ifdef DOXYGEN
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#define __attribute__(...)
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#endif
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/*
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* We export the symbol obj_OBJECT (OBJECT is defined on command-line)
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2005-04-08 15:01:17 +00:00
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* as a global symbol, so that the linker can drag in selected object
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* files from the library using -u obj_OBJECT.
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*
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* Not quite sure why cpp requires two levels of macro call in order
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* to actually expand OBJECT...
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*/
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#undef _H1
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#define _H1( x, y ) x ## y
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#undef _H2
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#define _H2( x, y ) _H1 ( x, y )
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2005-04-27 11:59:37 +00:00
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#define PREFIX_OBJECT(prefix) _H2 ( prefix, OBJECT )
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#define OBJECT_SYMBOL PREFIX_OBJECT(obj_)
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2005-04-08 15:01:17 +00:00
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#undef _STR
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#define _STR(s) #s
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#undef _XSTR
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#define _XSTR(s) _STR(s)
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#define OBJECT_SYMBOL_STR _XSTR ( OBJECT_SYMBOL )
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#ifdef ASSEMBLY
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.globl OBJECT_SYMBOL
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.equ OBJECT_SYMBOL, 0
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#else /* ASSEMBLY */
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__asm__ ( ".globl\t" OBJECT_SYMBOL_STR );
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__asm__ ( ".equ\t" OBJECT_SYMBOL_STR ", 0" );
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2005-04-14 11:35:45 +00:00
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/*
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* Macro to allow objects to explicitly drag in other objects by
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* object name. Used by config.c.
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*
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*/
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2005-04-08 15:01:17 +00:00
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#define REQUIRE_OBJECT(object) \
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__asm__ ( ".equ\tneed_" #object ", obj_" #object );
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2005-04-14 11:35:45 +00:00
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/*
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* If debug_OBJECT is set to a true value, the macro DBG(...) will
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* expand to printf(...) when compiling OBJECT, and the symbol
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2005-04-25 16:28:07 +00:00
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* DEBUG_LEVEL will be inserted into the object file.
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2005-04-14 11:35:45 +00:00
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*
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*/
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2005-04-27 11:59:37 +00:00
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#define DEBUG_SYMBOL PREFIX_OBJECT(debug_)
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2005-04-25 16:28:07 +00:00
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2005-04-14 11:35:45 +00:00
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#if DEBUG_SYMBOL
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2005-04-17 10:25:06 +00:00
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#include "console.h"
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2005-04-14 11:35:45 +00:00
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#define DEBUG_SYMBOL_STR _XSTR ( DEBUG_SYMBOL )
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2005-04-25 16:28:07 +00:00
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__asm__ ( ".equ\tDEBUG_LEVEL, " DEBUG_SYMBOL_STR );
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#endif
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#define DBG_PRINT(...) printf ( __VA_ARGS__ )
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#define DBG_DISCARD(...)
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#define DBG DBG_DISCARD
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#define DBG2 DBG_DISCARD
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#if DEBUG_SYMBOL >= 1
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#undef DBG
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#define DBG DBG_PRINT
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#endif
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#if DEBUG_SYMBOL >= 2
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#undef DBG2
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#define DBG2 DBG_PRINT
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2005-04-14 11:35:45 +00:00
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#endif
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2005-05-13 10:18:21 +00:00
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/*
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* ASSERT() macros
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*
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*/
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#define ASSERT(x)
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#if DEBUG_SYMBOL >= 1
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#undef ASSERT
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#define ASSERT(x) \
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do { \
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if ( ! (x) ) { \
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DBG ( "ASSERT(%s) failed at %s line %d [%s]\n", #x, \
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__FILE__, __LINE__, __FUNCTION__ ); \
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} \
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} while (0)
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#endif
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2005-05-17 12:16:28 +00:00
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/*
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* Commonly-used attributes.
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*
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* Note that __used can be used only for functions. If you have a
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* static variable declaration that you want to force to be included,
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* use __unused.
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*
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*/
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#define PACKED __attribute__ (( packed ))
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#define __unused __attribute__ (( unused ))
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#define __used __attribute__ (( used ))
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#define __aligned __attribute__ (( aligned ( 16 ) ))
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2005-04-08 15:01:17 +00:00
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2005-05-02 16:21:52 +00:00
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/*
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* To save space in the binary when multiple-driver images are
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* compiled, uninitialised data areas can be shared between drivers.
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* This will typically be used to share statically-allocated receive
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* and transmit buffers between drivers.
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*
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* Use as e.g.
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*
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* struct {
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* char rx_buf[NUM_RX_BUF][RX_BUF_SIZE];
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* char tx_buf[TX_BUF_SIZE];
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* } my_static_data __shared;
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*
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*/
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2005-05-03 09:02:24 +00:00
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#define __shared __asm__ ( "_shared_bss" )
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2005-05-02 16:21:52 +00:00
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2005-04-08 15:01:17 +00:00
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#endif /* ASSEMBLY */
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#endif /* COMPILER_H */
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