Commit | Line | Data |
---|---|---|
b6c81d5e RE |
1 | /* bootxx.c 4.1 82/07/19 */ |
2 | ||
3 | #include "../h/param.h" | |
4 | #include "../h/inode.h" | |
5 | #include "../h/fs.h" | |
6 | #include "../h/vm.h" | |
7 | #include <a.out.h> | |
8 | #include "saio.h" | |
9 | #include "../h/reboot.h" | |
10 | ||
11 | #ifdef BOOTRK | |
12 | char bootprog[] = "hk(0,0)boot"; | |
13 | #endif | |
14 | #ifdef BOOTHP | |
15 | char bootprog[] = "hp(0,0)boot"; | |
16 | #endif | |
17 | #ifdef BOOTUP | |
18 | char bootprog[] = "up(0,0)boot"; | |
19 | #endif | |
20 | ||
21 | /* | |
22 | * Boot program... arguments passed in r10 and r11 | |
23 | * are passed through to the full boot program. | |
24 | */ | |
25 | ||
26 | main() | |
27 | { | |
28 | register howto, devtype; /* howto=r11, devtype=r10 */ | |
29 | int io; | |
30 | ||
31 | #ifdef lint | |
32 | howto = 0; devtype = 0; | |
33 | #endif | |
34 | printf("loading %s", bootprog); | |
35 | io = open(bootprog, 0); | |
36 | if (io >= 0) | |
37 | copyunix(howto, devtype, io); | |
38 | printf("boot failed"); | |
39 | _exit(); | |
40 | } | |
41 | ||
42 | /*ARGSUSED*/ | |
43 | copyunix(howto, devtype, io) | |
44 | register howto, devtype, io; /* howto=r11, devtype=r10 */ | |
45 | { | |
46 | struct exec x; | |
47 | register int i; | |
48 | char *addr; | |
49 | ||
50 | i = read(io, (char *)&x, sizeof x); | |
51 | if (i != sizeof x || | |
52 | (x.a_magic != 0407 && x.a_magic != 0413 && x.a_magic != 0410)) | |
53 | _stop("Bad format\n"); | |
54 | if ((x.a_magic == 0413 || x.a_magic == 0410) && | |
55 | lseek(io, 0x400, 0) == -1) | |
56 | goto shread; | |
57 | if (read(io, (char *)0, x.a_text) != x.a_text) | |
58 | goto shread; | |
59 | addr = (char *)x.a_text; | |
60 | if (x.a_magic == 0413 || x.a_magic == 0410) | |
61 | while ((int)addr & CLOFSET) | |
62 | *addr++ = 0; | |
63 | if (read(io, addr, x.a_data) != x.a_data) | |
64 | goto shread; | |
65 | addr += x.a_data; | |
66 | x.a_bss += 128*512; /* slop */ | |
67 | for (i = 0; i < x.a_bss; i++) | |
68 | *addr++ = 0; | |
69 | x.a_entry &= 0x7fffffff; | |
70 | (*((int (*)()) x.a_entry))(); | |
71 | _exit(); | |
72 | shread: | |
73 | _stop("Short read\n"); | |
74 | } |