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From: merlyn@digibd.com (Brian Westley (Merlyn LeRoy))
Newsgroups: comp.sys.mac.programmer
Subject: Re: DrvrInstall and DrvrRemove (here's the glue)
Message-ID: <1990Nov16.202612.3369@digibd.com>
Date: 16 Nov 90 20:26:12 GMT
References: <1990Nov12.062133.29315@ux1.cso.uiuc.edu>
Organization: DigiBoard Incorporated, St. Louis Park, MN
Lines: 56

resnick@cogsci.uiuc.edu (Pete Resnick) writes:
...
>5. DrvrInstall and DrvrRemove are not in MacTraps in THINK C as far
>as I can tell. What do I do with the MPW glue to make this work?

Here's what I use (Think C)


/* "trap" is used in assembly thus:  trap _DrvrInstall */
#define	trap		dc.w

#define _DrvrInstall	0xA03D
#define _DrvrRemove	0xA03E

/*
 * Apple routine glue for DrvrInstall
 */
OSErr
DrvrInstall(drvrHandle, refNum)
Handle drvrHandle;
int refNum;
{
	OSErr result;

	asm {
	move.w	refNum, d0		; driver reference number
	move.l	drvrHandle, a0		; handle to driver 
	move.l	(a0), a0		; pointer to driver
	trap	_DrvrInstall
	move.w	d0, result		; get error
	}
	return (result);
}


/*
 * Apple routine glue for DrvrRemove
 */
OSErr
DrvrRemove(refNum)
int refNum;
{
	OSErr result;

	asm {
	move.w	refNum, d0		; driver reference number
	trap	_DrvrRemove
	move.w	d0, result		; get error
	}
	return (result);
}


HTH (hope this helps)
---
Merlyn LeRoy