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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [libgloss/] [m68k/] [asm.h] - Rev 304
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/* asm.h -- macros for m68k asm * * Copyright (c) 1995, 1996 Cygnus Support * * The authors hereby grant permission to use, copy, modify, distribute, * and license this software and its documentation for any purpose, provided * that existing copyright notices are retained in all copies and that this * notice is included verbatim in any distributions. No written agreement, * license, or royalty fee is required for any of the authorized uses. * Modifications to this software may be copyrighted by their authors * and need not follow the licensing terms described here, provided that * the new terms are clearly indicated on the first page of each file where * they apply. */ #if 0 /* * XXX __USER_LABEL_PREFIX__ and __REGISTER_PREFIX__ do not work on gcc 2.7.0-3 * XXX The following ifdef magic fixes the problem but results in a warning * XXX when compiling assembly code. */ #ifndef __USER_LABEL_PREFIX__ /* #define __USER_LABEL_PREFIX__ "" /* no underscore for coff */ #define __USER_LABEL_PREFIX__ _ /* leading underscore for aout */ #endif #ifndef __REGISTER_PREFIX__ #define __REGISTER_PREFIX__ /* never has anything prefixed */ #endif #endif /* * some assemblers choke on '#' as an immediate value. As gcc can also * use '&', use that in those cases. */ #ifndef __IMMEDIATE_PREFIX__ #define __IMMEDIATE_PREFIX__ # #endif /* ANSI concatenation macros. */ #define CONCAT1(a, b) CONCAT2(a, b) #define CONCAT2(a, b) a ## b /* use the right prefix for global labels. */ #define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__,x) /* use the right prefix for registers. */ #define REG(x) CONCAT1 (__REGISTER_PREFIX__,x) /* use the right prefix for immediate values. */ #define IMM(x) CONCAT1 (__IMMEDIATE_PREFIX__,x) /* use the right prefix for register names */ #define d0 REG (d0) #define d1 REG (d1) #define d2 REG (d2) #define d3 REG (d3) #define d4 REG (d4) #define d5 REG (d5) #define d6 REG (d6) #define d7 REG (d7) #define a0 REG (a0) #define a1 REG (a1) #define a2 REG (a2) #define a3 REG (a3) #define a4 REG (a4) #define a5 REG (a5) #define a6 REG (a6) #define a7 REG (a7) #define fp REG (fp) #define fp0 REG (fp0) #define fp1 REG (fp1) #define fp2 REG (fp2) #define fp3 REG (fp3) #define fp4 REG (fp4) #define fp5 REG (fp5) #define fp6 REG (fp6) #define fp7 REG (fp7) #define sp REG (sp) #define usp REG (usp) #define vbr REG (vbr) #define mbb REG (mbb) #define sr REG (sr) #define fpcr REG (fpcr) #define fpsr REG (fpsr) #define fpi REG (fpi) /* Provide a few macros to allow for PIC code support. * With PIC, data is stored A5 relative so we've got to take a bit of special * care to ensure that all loads of global data is via A5. PIC also requires * jumps and subroutine calls to be PC relative rather than absolute. We cheat * a little on this and in the PIC case, we use short offset branches and * hope that the final object code is within range (which it should be). */ #ifndef __PIC__ /* Non PIC (absolute/relocatable) versions */ .macro PICCALL addr jbsr \addr .endm .macro PICJUMP addr jmp \addr .endm .macro PICLEA sym, reg lea \sym, \reg .endm .macro PICPEA sym, areg pea \sym .endm #else /* __PIC__ */ /* Common for -mid-shared-libary and -msep-data */ .macro PICCALL addr bsr \addr .endm .macro PICJUMP addr bra \addr .endm # if defined(__ID_SHARED_LIBRARY__) /* -mid-shared-library versions */ .macro PICLEA sym, reg movel a5@(_current_shared_library_a5_offset_), \reg movel \sym@GOT(\reg), \reg .endm .macro PICPEA sym, areg movel a5@(_current_shared_library_a5_offset_), \areg movel \sym@GOT(\areg), sp@- .endm # else /* !__ID_SHARED_LIBRARY__ */ /* Versions for -msep-data */ .macro PICLEA sym, reg movel \sym@GOT(a5), \reg .endm .macro PICPEA sym, areg movel \sym@GOT(a5), sp@- .endm # endif /* !__ID_SHARED_LIBRARY__ */ #endif /* __PIC__ */
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