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Up to [Power 6/32 Unix Tahoe 4.2BSD] / cci / d / ioex|
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1.1 root 1: /*
2: * Interrupt vector routines
3: */
4:
5: #define SCBVEC(name) .align 2 \
6: .globl _X/**/name \
7: _X/**/name
8: #define PANIC(msg) clrl _waittime \
9: pushab 1f \
10: calls $1*4+4,_panic \
11: halt \
12: 1: .asciz msg
13: #define PRINTF(n,msg) pushab 1f; calls $(n+1)*4+4,_printf; MSG(msg)
14: #define MSG(msg) 1: .asciz msg
15: #define PUSHR pushl r5; pushl r4; pushl r3; pushl r2;\
16: pushl r1; pushl r0
17:
18: #define POPR movl (sp)+,r0 \
19: movl (sp)+,r1 \
20: movl (sp)+,r2 \
21: movl (sp)+,r3 \
22: movl (sp)+,r4 \
23: movl (sp)+,r5
24: /*
25: *unknown interrupt
26: */
27:
28: SCBVEC(unknown):
29: halt
30: /*
31:
32: *powerfail
33: *psl & pc are saved on int stack.
34: *This routine saves general registers,memory mgmt registers,
35: *privileged registers, etc. in _dbuf & then executes halt.
36: *
37: *The restart location is saved at 0x00000c00. CPU 2 should
38: *restart at the location specified after power is up.
39:
40: */
41:
42: SCBVEC(powerfail):
43:
44: /*save context and restart location*/
45:
46: halt
47:
48: /*
49:
50: *interval timer
51:
52: */
53:
54: SCBVEC(hardclock):
55: halt
56: /*
57: *console terminal receive interrupt
58: */
59:
60: SCBVEC(cnrint):
61: rei
62: /*
63: *console terminal transmit interrupt
64: */
65:
66: SCBVEC(cnxint):
67: rei /* Just REI back !! */
68: halt
69: /*
70: *software generated interrupts
71: */
72:
73: SCBVEC(s15):
74: halt
75: /*
76: *software generated interrupts
77: */
78:
79: SCBVEC(s14):
80: halt
81: /*
82: *software generated interrupts
83: */
84:
85: SCBVEC(s13):
86: halt
87: /*
88: *software generated interrupts
89: */
90:
91: SCBVEC(s12):
92: halt
93: /*
94: *software generated interrupts
95: */
96:
97: SCBVEC(s11):
98: halt
99: /*
100: *software generated interrupts
101: */
102:
103: SCBVEC(s10):
104: halt
105: /*
106: *software generated interrupts
107: */
108:
109: SCBVEC(s9):
110: halt
111: /*
112: *software generated interrupts
113: */
114:
115: SCBVEC(s8):
116: halt
117: /*
118: *software generated interrupts
119: */
120:
121: SCBVEC(s7):
122: halt
123: /*
124: *software generated interrupts
125: */
126:
127: SCBVEC(s6):
128: halt
129: /*
130: *software generated interrupts
131: */
132:
133: SCBVEC(s5):
134: halt
135: /*
136: *software generated interrupts
137: */
138:
139: SCBVEC(s4):
140: halt
141: /*
142: *software generated interrupts
143: */
144:
145: SCBVEC(s3):
146: halt
147: /*
148: *software generated interrupts
149: */
150:
151: SCBVEC(s2):
152: halt
153: /*
154: *software generated interrupts
155: */
156:
157: SCBVEC(s1):
158: halt
159:
160: /*
161: *io interrupt
162: */
163:
164: SCBVEC(iovec14):
165: halt
166: SCBVEC(iovec15):
167: halt
168: SCBVEC(iovec16):
169: halt
170: SCBVEC(iovec17):
171: halt
172:
173: /*
174: *EXCEPTIONS
175: */
176:
177: /*
178:
179: *buserror
180: *psl, pc, and errorcode are pushed onto int stack.
181: *ipl is raised to 0x1d.
182: *buserror could be due to:
183: *non-existent memory
184: *versabus timeout
185: *uncorrectable memory
186: *versabus error (BERR)
187: *versabus parity error
188:
189: */
190: SCBVEC(buserror):
191: halt
192:
193: /*
194: *kernel stack not valid
195: *happens only during the initiation of another exception or
196: *interrupt.The process must be aborted.
197: *pc & psl are pushed onto INTSTACK.
198: * IPL is raised to 0x1f.
199: *this routine calls _panic routine written in C which prints
200: *the message & waits for the operator action.
201: */
202:
203: SCBVEC(kspnotval):
204: halt
205: /*
206: * Trap and fault vector routines
207: */
208: #define TRAP(a) pushl $a; brw alltraps
209:
210: SCBVEC(prvinflt):
211: halt
212: SCBVEC(resopflt):
213: halt
214: SCBVEC(resadflt):
215: halt
216: SCBVEC(bptflt):
217: halt
218: SCBVEC(tracep):
219: halt
220: SCBVEC(arithtrap):
221: halt
222: SCBVEC(protflt): /*access control violation*/
223: halt
224: SCBVEC(transflt):
225: halt
226: SCBVEC(alignflt):
227: halt
228:
229: alltraps:
230: halt
231: /* mfpr $USP,-(sp)
232: calls $0*4+4,_trap
233: mtpr (sp)+,$USP
234: incl _cnt+V_TRAP
235:
236: movab (sp),r12
237: addl2 $12,r12
238: movl r12,sp
239:
240: mtpr $HIGH,$IPL
241: rei
242: */
243:
244: SCBVEC(kcall): /*kcall*/
245: halt
246: /*
247: pushl $SYSCALL
248: mfpr $USP,-(sp)
249: calls $0*4+4,_syscall
250: mtpr (sp)+,$USP
251: incl _cnt+V_SYSCALL
252:
253: movab (sp),r12
254: addl2 $12,r12
255: movl r12,sp
256:
257: mtpr $HIGH,$IPL
258: rei
259: */
260:
261:
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