1*4868Sroot /* boot.c 4.5 81/11/12 */ 2315Sbill 3315Sbill #include "../h/param.h" 4315Sbill #include "../h/ino.h" 5315Sbill #include "../h/inode.h" 6315Sbill #include "../h/filsys.h" 7315Sbill #include "../h/dir.h" 8315Sbill #include "../h/vm.h" 9315Sbill #include <a.out.h> 10315Sbill #include "saio.h" 111466Sbill #include <sys/reboot.h> 12315Sbill 131466Sbill /* 141466Sbill * Boot program... arguments passed in r10 and r11 determine 151466Sbill * whether boot stops to ask for system name and which device 161466Sbill * boot comes from. 171466Sbill */ 18315Sbill 191466Sbill /* Types in r10 specifying major device */ 201466Sbill char devname[][2] = { 211466Sbill 'h','p', /* 0 = hp */ 221466Sbill 0,0, /* 1 = ht */ 231466Sbill 'u','p', /* 2 = up */ 243261Swnj 'h','k', /* 3 = hk */ 25*4868Sroot 0,0, /* 4 = sw */ 26*4868Sroot 0,0, /* 5 = tm */ 27*4868Sroot 0,0, /* 6 = ts */ 28*4868Sroot 0,0, /* 7 = mt */ 29*4868Sroot 0,0, /* 8 = tu */ 30*4868Sroot 'r','a', /* 9 = ra */ 311466Sbill }; 321466Sbill 331466Sbill char line[100] = "xx(0,0)vmunix"; 341466Sbill 353347Swnj int retry = 0; 363347Swnj 37315Sbill main() 38315Sbill { 391466Sbill register howto, devtype; /* howto=r11, devtype=r10 */ 403347Swnj int io; 41315Sbill 423274Swnj #ifdef lint 433274Swnj howto = 0; devtype = 0; 443274Swnj #endif 45315Sbill printf("\nBoot\n"); 461575Sbill #ifdef JUSTASK 471593Sbill howto = RB_ASKNAME|RB_SINGLE; 481575Sbill #else 491466Sbill if ((howto&RB_ASKNAME)==0) { 501466Sbill if (devtype>=0 && devtype<sizeof(devname)/2 511466Sbill && devname[devtype][0]) { 521466Sbill line[0] = devname[devtype][0]; 531466Sbill line[1] = devname[devtype][1]; 543261Swnj } else 551466Sbill howto = RB_SINGLE|RB_ASKNAME; 561466Sbill } 571575Sbill #endif 581466Sbill for (;;) { 591466Sbill if (howto & RB_ASKNAME) { 601466Sbill printf(": "); 611466Sbill gets(line); 621466Sbill } else 631466Sbill printf(": %s\n", line); 641466Sbill io = open(line, 0); 651466Sbill if (io >= 0) 663347Swnj copyunix(howto, io); 671466Sbill if (++retry > 2) 681466Sbill howto = RB_SINGLE|RB_ASKNAME; 691466Sbill } 70315Sbill } 71315Sbill 723347Swnj /*ARGSUSED*/ 733347Swnj copyunix(howto, io) 743347Swnj register howto, io; 75315Sbill { 76315Sbill struct exec x; 77315Sbill register int i; 78315Sbill char *addr; 79315Sbill 80315Sbill i = read(io, (char *)&x, sizeof x); 81315Sbill if (i != sizeof x || x.a_magic != 0410) 82315Sbill _stop("Bad format\n"); 83315Sbill printf("%d", x.a_text); 84315Sbill if (read(io, (char *)0, x.a_text) != x.a_text) 85315Sbill goto shread; 86315Sbill addr = (char *)x.a_text; 87315Sbill while ((int)addr & CLOFSET) 88315Sbill *addr++ = 0; 89315Sbill printf("+%d", x.a_data); 90315Sbill if (read(io, addr, x.a_data) != x.a_data) 91315Sbill goto shread; 92315Sbill addr += x.a_data; 93315Sbill printf("+%d", x.a_bss); 94315Sbill x.a_bss += 128*512; /* slop */ 95315Sbill for (i = 0; i < x.a_bss; i++) 96315Sbill *addr++ = 0; 97315Sbill x.a_entry &= 0x7fffffff; 98315Sbill printf(" start 0x%x\n", x.a_entry); 99315Sbill (*((int (*)()) x.a_entry))(); 100315Sbill _exit(); 101315Sbill shread: 102315Sbill _stop("Short read\n"); 103315Sbill } 104