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#include <u.h>
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#include <libc.h>
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#include <thread.h>
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#include <sunrpc.h>
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SunStatus
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sunCallPack(SunProg *prog, uchar *a, uchar *ea, uchar **pa, SunCall *c)
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{
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	uchar *x;
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	int (*pack)(uchar*, uchar*, uchar**, SunCall*);
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	if(pa == nil)
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		pa = &x;
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	if(c->type < 0 || c->type >= prog->nproc || (pack=prog->proc[c->type].pack) == nil)
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		return SunProcUnavail;
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	if((*pack)(a, ea, pa, c) < 0)
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		return SunGarbageArgs;
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	return SunSuccess;
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}
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SunStatus
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sunCallUnpack(SunProg *prog, uchar *a, uchar *ea, uchar **pa, SunCall *c)
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{
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	uchar *x;
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	int (*unpack)(uchar*, uchar*, uchar**, SunCall*);
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	if(pa == nil)
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		pa = &x;
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	if(c->type < 0 || c->type >= prog->nproc || (unpack=prog->proc[c->type].unpack) == nil)
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		return SunProcUnavail;
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	if((*unpack)(a, ea, pa, c) < 0){
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		fprint(2, "in: %.*H unpack failed\n", (int)(ea-a), a);
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		return SunGarbageArgs;
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	}
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	return SunSuccess;
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}
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SunStatus
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sunCallUnpackAlloc(SunProg *prog, SunCallType type, uchar *a, uchar *ea, uchar **pa, SunCall **pc)
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{
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	uchar *x;
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	uint size;
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	int (*unpack)(uchar*, uchar*, uchar**, SunCall*);
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	SunCall *c;
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	if(pa == nil)
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		pa = &x;
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	if(type < 0 || type >= prog->nproc || (unpack=prog->proc[type].unpack) == nil)
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		return SunProcUnavail;
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	size = prog->proc[type].sizeoftype;
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	if(size == 0)
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		return SunProcUnavail;
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	c = mallocz(size, 1);
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	if(c == nil)
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		return SunSystemErr;
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	c->type = type;
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	if((*unpack)(a, ea, pa, c) < 0){
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		fprint(2, "in: %.*H unpack failed\n", (int)(ea-a), a);
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		free(c);
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		return SunGarbageArgs;
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	}
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	*pc = c;
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	return SunSuccess;
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}
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uint
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sunCallSize(SunProg *prog, SunCall *c)
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{
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	uint (*size)(SunCall*);
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	if(c->type < 0 || c->type >= prog->nproc || (size=prog->proc[c->type].size) == nil)
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		return ~0;
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	return (*size)(c);
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}