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Mac Format 1994 October
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Macformat17.cdr
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Shareware City
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shutdown-fx-20-c
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sfx init ƒ
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a4 setup.h
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1994-07-11
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/*
* SetUpA4.h
*
* Copyright (c) 1991 Symantec Corporation. All rights reserved.
*
* This defines "SetUpA4()" and "RestoreA4()" routines that will work
* in all A4-based projects.
*
* "RememberA4()" or "RememberA0()" must be called in advance to
* store away the value of A4 where it can be found by "SetUpA4()".
* The matching calls to "RememberA4()" (or "RememberA0()") and
* "SetUpA4()" *MUST* occur in the same file.
*
* Note that "RememberA4()", "RememberA0()" "SetUpA4()", and
* "RestoreA4()" are not external. Each file that uses them must
* include its own copy.
*
* If this file is used in the main file of a code resource with
* "Custom Headers", be sure to #include it *AFTER* the custom
* header! Otherwise, the code resource will begin with the code
* for the function "__GetA4()", defined below.
*
*/
#define RememberA4() do { __GetA4(); asm { move.l a4,(a1) } } while (0)
#define RememberA0() do { __GetA4(); asm { move.l a0,(a1) } } while (0)
#define SetUpA4() do { asm { move.l a4,-(sp) } __GetA4(); asm { move.l (a1),a4 } } while (0)
#define RestoreA4() do { asm { move.l (sp)+,a4 } } while (0)