From mboxrd@z Thu Jan  1 00:00:00 1970
From: erik quanstrom <quanstro@quanstro.net>
Date: Mon,  3 Jan 2011 12:56:02 -0500
To: 9fans@9fans.net
Message-ID: <39e559fe272e780d9a7e5f5f51e3461f@plug.quanstro.net>
In-Reply-To: <e758e543f658ef85894de1ebfbce09f5@plug.quanstro.net>
References: <AANLkTi==xQkpH6hZoKXk2caSoqmqHERVsEUFY-1BruNN@mail.gmail.com>
	<e758e543f658ef85894de1ebfbce09f5@plug.quanstro.net>
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Subject: Re: [9fans] pcc/8c dies compiling simh code
Topicbox-Message-UUID: 90706902-ead6-11e9-9d60-3106f5b1d025

this function (here reorganized to avoid the register allocation
problem) was the problem:  if *buf were a d10 already, i don't
think you'd have seen this problem.

int32
Map_WriteB (uint32 ba, int32 bc, uint8 *buf)
{
	uint32 lim;
	a10 pa10;
	d10 mask, shift;

	lim = ba + bc;
	for ( ; ba < lim; ba++) {					/* by bytes */
		pa10 = Map_Addr10 (ba, 1);			/* map addr */
		if ((pa10 < 0) || MEM_ADDR_NXM (pa10)) {	/* inv map or NXM? */
			ubcs[1] |= UBCS_TMO;			/* UBA times out */
			return lim - ba;				/* return bc */
		}
		mask = 0377;
		shift = ubashf[ba & 3];
		M[pa10] = M[pa10] & ~(mask << shift);
		M[pa10] |= (d10)*buf++ << shift;
	}
	return 0;
}

- erik