projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 76bc8667 C |
1 | /* srt0.c 4.8 81/04/03 */ |
| 2 | ||
| 3 | #include "../h/mtpr.h" | |
| 4 | #define LOCORE | |
| 5 | #include "../h/cpu.h" | |
| 6 | ||
| 7 | /* | |
| 8 | * Startup code for standalone system | |
| 9 | * Non-relocating version -- for programs which are loaded by boot | |
| 10 | */ | |
| 11 | ||
| 12 | .globl _end | |
| 13 | .globl _edata | |
| 14 | .globl _main | |
| 15 | .globl __rtt | |
| 16 | .globl _configure | |
| 17 | .globl _cpu | |
| 18 | .globl _openfirst | |
| 19 | ||
| 20 | .set HIGH,31 # mask for total disable | |
| 21 | ||
| 22 | entry: .globl entry | |
| 23 | .word 0x0 | |
| 24 | mtpr $HIGH,$IPL # just in case | |
| 25 | #ifdef REL | |
| 26 | movl $RELOC,sp | |
| 27 | #else | |
| 28 | movl $RELOC-0x2400,sp | |
| 29 | #endif | |
| 30 | start: | |
| 31 | movl aedata,r0 | |
| 32 | clr: | |
| 33 | clrl (r0)+ | |
| 34 | cmpl r0,sp | |
| 35 | jlss clr | |
| 36 | #ifdef REL | |
| 37 | movc3 aend,*$0,(sp) | |
| 38 | jmp *abegin | |
| 39 | begin: | |
| 40 | #endif | |
| 41 | mtpr $0,$SCBB | |
| 42 | calls $0,_configure | |
| 43 | movl $1,_openfirst | |
| 44 | calls $0,_main | |
| 45 | #ifndef TP | |
| 46 | jmp start | |
| 47 | #else | |
| 48 | ret | |
| 49 | #endif | |
| 50 | ||
| 51 | .data | |
| 52 | #ifdef REL | |
| 53 | abegin: .long begin | |
| 54 | aend: .long _end-RELOC | |
| 55 | aedata: .long _edata-RELOC | |
| 56 | #else | |
| 57 | aedata: .long _edata | |
| 58 | #endif | |
| 59 | ||
| 60 | __rtt: | |
| 61 | .word 0x0 | |
| 62 | jmp start | |
| 63 | ||
| 64 | .globl _badloc | |
| 65 | _badloc: | |
| 66 | .word 0 | |
| 67 | movl $1,r0 | |
| 68 | movl 4(ap),r3 | |
| 69 | movl $4,r2 | |
| 70 | movab 9f,(r2) | |
| 71 | tstl (r3) | |
| 72 | 1: clrl r0 # made it w/o machine checks | |
| 73 | 2: movl $4,r2 | |
| 74 | clrl (r2) | |
| 75 | ret | |
| 76 | .align 2 | |
| 77 | 9: | |
| 78 | casel _cpu,$1,$VAX_MAX | |
| 79 | 0: | |
| 80 | .word 8f-0b # 1 is 780 | |
| 81 | .word 5f-0b # 2 is 750 | |
| 82 | .word 5f-0b # 3 is 7ZZ | |
| 83 | 5: | |
| 84 | mtpr $0xf,$MCESR | |
| 85 | brb 1f | |
| 86 | 8: | |
| 87 | mtpr $0,$SBIFS | |
| 88 | 1: | |
| 89 | addl2 (sp)+,sp # discard mchchk trash | |
| 90 | movab 2b,(sp) | |
| 91 | rei |