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@ -1,4 +1,4 @@
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/* Copyright (C) 1991 Free Software Foundation, Inc.
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/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -19,7 +19,7 @@ Cambridge, MA 02139, USA. */
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#ifndef _68881_SWITCH_H
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#define _68881_SWITCH_H 1
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#include <sys/cdefs.h>
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/* This is the format of the data at the code label for a function which
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wants to switch depending on whether or not a 68881 is present.
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@ -33,9 +33,9 @@ Cambridge, MA 02139, USA. */
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struct switch_caller
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{
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unsigned short int insn; /* The `jsr' or `jmp' instruction. */
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PTR target; /* The target of the instruction. */
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PTR soft; /* The address of the soft function. */
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PTR fpu; /* The address of the 68881 function. */
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__ptr_t target; /* The target of the instruction. */
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__ptr_t soft; /* The address of the soft function. */
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__ptr_t fpu; /* The address of the 68881 function. */
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};
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/* These are opcodes (values for `insn', above) for `jmp' and `jsr'
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@ -50,20 +50,14 @@ struct switch_caller
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extern void EXFUN(__68881_switch, (int __dummy));
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#ifdef __STDC__
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#define __paste(a, b) a ## b
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#else
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#define __paste(a, b) a/**/b
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#endif
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/* Define FUNCTION as a `struct switch_caller' which will call
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`__FUNCTION_68881' if a 68881 is present, and `__FUNCTION_soft' if not.
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#define switching_function(FUNCTION) \
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struct switch_caller FUNCTION = \
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{ \
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JSR, (PTR) __68881_switch, \
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__paste(__paste(__, FUNCTION), _soft), \
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__paste(__paste(__, FUNCTION), _68881) \
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JSR, (__ptr_t) __68881_switch, \
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__CONCAT(__CONCAT(__,FUNCTION),_soft), \
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__CONCAT(__CONCAT(__,FUNCTION),_68881) \
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}
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