1990/0427/power/main.c (diff list | history)

1990/0424/sys/src/9/power/main.c:12,19 – 1990/0427/sys/src/9/power/main.c:12,19 (short | long | prev | next)
1990/0424		*/ int _argc; char **_argv; char **_env; char *argv[5]; char argx[4][64];
1990/0427		char argbuf[512]; int argsize;
1990/0424
1990/0227		void main(void)
1990/0424/sys/src/9/power/main.c:43,60 – 1990/0427/sys/src/9/power/main.c:43,89
1990/0227		schedinit(); }
1990/0427		/* * copy arguments into a temporary buffer. we do this because the arguments * are in memory that may be allocated to processes or kernel buffers. */
1990/0227		void
1990/0424		arginit(void) { int i;
1990/0427		int i, n; int nbytes; int ssize; char *p; char **argv; char *charp;
1990/0424		if(_argc > 5) _argc = 5;
1990/0427		/* * trim arguments to make them fit in the buffer */ for(nbytes = i = 0; i < _argc; i++){ n = strlen(_argv[i]) + 1; ssize = BY2WD*(i+2) + ((nbytes+n+(BY2WD-1)) & ~(BY2WD-1)); if(ssize > sizeof(argbuf)) break; nbytes += n; } _argc = i; ssize = BY2WD*(i+1) + ((nbytes+(BY2WD-1)) & ~(BY2WD-1));
1990/0424		for(i = 1; i < _argc; i++){ strcpy(argx[i-1], _argv[i]); argv[i-1] = &(argx[i-1][0]);
1990/0427		/* * copy arguments into the buffer */ argv = (char**)(argbuf + sizeof(argbuf) - ssize); charp = (char*)(argbuf + sizeof(argbuf) - nbytes); for(i=0; i<_argc; i++){ argv[i] = charp; n = strlen(_argv[i]) + 1; memcpy(charp, _argv[i], n); charp += n;
1990/0424		}
1990/0427		_argv = argv; argsize = ssize;
1990/0424		} void
1990/0424/sys/src/9/power/main.c:168,184 – 1990/0427/sys/src/9/power/main.c:197,217
1990/0227		init0(void) {
1990/0424		int i;
1990/0427		ulong *sp;
1990/0424
1990/0227		m->proc = u->p; u->p->state = Running; u->p->mach = m; spllo();
1990/0427
1990/0227		chandevinit();
1990/0424
1990/0227		u->slash = (*devtab[0].attach)(0); u->dot = clone(u->slash, 0); touser();
1990/0427		sp = (ulong*)(USTKTOP - argsize); touser(sp);
1990/0227		} FPsave initfp;
1990/0424/sys/src/9/power/main.c:189,194 – 1990/0427/sys/src/9/power/main.c:222,229
1990/0227		Proc *p; Seg *s; User *up;
1990/0427		int i; char **av;
1990/0227		p = newproc(); p->pgrp = newpgrp();
1990/0424/sys/src/9/power/main.c:211,221 – 1990/0427/sys/src/9/power/main.c:246,262
1990/0227		up->p = p; /* * User Stack
1990/0427		* User Stack, pass input arguments to boot process
1990/0227		*/ s = &p->seg[SSEG]; s->proc = p; s->o = neworig(USTKTOP-BY2PG, 1, OWRPERM, 0);
1990/0427		s->o->pte[0].page = newpage(0, 0, USTKTOP-BY2PG); memcpy((ulong*)(s->o->pte[0].page->pa|KZERO|(BY2PG-argsize)), argbuf + sizeof(argbuf) - argsize, argsize); av = (char **)(s->o->pte[0].page->pa|KZERO|(BY2PG-argsize)); for(i = 0; i < _argc; i++) av[i] += (char *)USTKTOP - (argbuf + sizeof(argbuf));
1990/0227		s->minva = USTKTOP-BY2PG; s->maxva = USTKTOP;