36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
#ifndef _HEADERS_REGPARM_H
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#define _HEADERS_REGPARM_H
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#define ___PUSH(a) "movel\t" #a ",sp@-\n"
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#define ___POP(a) "movel\tsp@+," #a "\n"
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#ifndef SMALL_DATA
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#define __REGP(functype,funcname,pushlist,popval) \
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asm(".even\n" ".globl _" #funcname "\n" "_" #funcname ":\n" \
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pushlist "jbsr\t___" #funcname "\n" "addqw\t#" #popval ",sp\n" \
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"rts\n"); functype __##funcname
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#else
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#define __REGP(functype,funcname,pushlist,popval) \
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asm(".even\n" ".globl _" #funcname "\n" "_" #funcname ":\n" ___PUSH(a4) \
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pushlist "jbsr\t_geta4\n" "jbsr\t___" #funcname "\n" "addqw\t#" #popval ",sp\n" \
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___POP(a4) "rts\n"); functype __##funcname
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#endif
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#define REGPARM1(functype,funcname,a1,r1) \
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__REGP(functype,funcname,___PUSH(r1),4) (a1)
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#define REGPARM2(functype,funcname,a1,r1,a2,r2) \
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__REGP(functype,funcname,___PUSH(r2)___PUSH(r1),8) (a1,a2)
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#define REGPARM3(functype,funcname,a1,r1,a2,r2,a3,r3) \
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__REGP(functype,funcname,___PUSH(r3)___PUSH(r2)___PUSH(r1),12) (a1,a2,a3)
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#define REGPARM4(functype,funcname,a1,r1,a2,r2,a3,r3,a4,r4) \
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__REGP(functype,funcname,___PUSH(r4)___PUSH(r3)___PUSH(r2)___PUSH(r1),16) (a1,a2,a3,a4)
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#endif /* _HEADERS_REGPARM_H */
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