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[/] [minsoc/] [trunk/] [sw/] [support/] [except.S] - Blame information for rev 36

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Line No. Rev Author Line
1 2 rfajardo
#include "spr_defs.h"
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// Linked from 0x200, so subtract 0x200 from each .org
4
.section .vectors, "ax"
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6
/*
7
.org 0x100
8
 
9
_reset:
10
        l.nop
11
        l.j     _reset_except
12
        l.nop
13
*/
14
.org 0x000
15
 
16
_except_200:
17
        l.nop
18
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
19
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
20
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
21
    l.nop
22
 
23
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
24
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
25
        l.j     _buserr_except
26
        l.nop
27
 
28
.org 0x100
29
 
30
_except_300:
31
        l.nop
32
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
33
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
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    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
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    l.nop
36
 
37
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
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    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
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        l.j     _dpf_except
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        l.nop
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42
.org 0x200
43
 
44
_except_400:
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        l.nop
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    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
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    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
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    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
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    l.nop
50
 
51
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
52
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
53
        l.j     _ipf_except
54
        l.nop
55
 
56
.org 0x300
57
 
58
_except_500:
59
        l.nop
60
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
61
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
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    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
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    l.nop
64
 
65
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
66
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
67 36 rfajardo
        l.j     _tick_except
68 2 rfajardo
        l.nop
69
 
70
.org 0x400
71
 
72
_except_600:
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        l.nop
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    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
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    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
76
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
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    l.nop
78
 
79
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
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    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
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        l.j     _align_except
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        l.nop
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.org 0x500
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86
_except_700:
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        l.nop
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    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
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    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
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    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
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    l.nop
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93
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
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    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
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        l.j     _illegal_except
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        l.nop
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.org 0x600
99
 
100
_except_800:
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        l.nop
102
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
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    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
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    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
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    l.nop
106
 
107
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
108
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
109 36 rfajardo
    l.j _ext_except                         //jmp to C interrupt handler (returns later to end_except)
110 2 rfajardo
    l.nop
111
 
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.org 0x700
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115
_except_900:
116
        l.nop
117
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
118
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
119
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
120
    l.nop
121
 
122
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
123
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
124
        l.j     _dtlbmiss_except
125
        l.nop
126
 
127
.org 0x800
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129
_except_a00:
130
        l.nop
131
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
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    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
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    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
134
    l.nop
135
 
136
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
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    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
138
        l.j     _itlbmiss_except
139
        l.nop
140
 
141
.org 0x900
142
 
143
_except_b00:
144
        l.nop
145
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
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    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
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    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
148
    l.nop
149
 
150
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
151
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
152
        l.j     _range_except
153
        l.nop
154
 
155
.org 0xa00
156
 
157
_except_c00:
158
        l.nop
159
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
160
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
161
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
162
    l.nop
163
 
164
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
165
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
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        l.j     _syscall_except
167
        l.nop
168
 
169
.org 0xb00
170
 
171
_except_d00:
172
        l.nop
173
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
174
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
175
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
176
    l.nop
177
 
178
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
179
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
180
        l.j     _res1_except
181
        l.nop
182
 
183
.org 0xc00
184
 
185
_except_e00:
186
        l.nop
187
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
188
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
189
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
190
    l.nop
191
 
192
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
193
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
194
        l.j     _trap_except
195
        l.nop
196
 
197
.org 0xd00
198
 
199
_except_f00:
200
        l.nop
201
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
202
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
203
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
204
    l.nop
205
 
206
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
207
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
208
        l.j     _res2_except
209
        l.nop
210
 
211
store_regs:             //save registers r3-r31 (except r9) to stack
212
        l.sw    0x00(r1),r3
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        l.sw    0x04(r1),r4
214
        l.sw    0x08(r1),r5
215
        l.sw    0x0c(r1),r6
216
        l.sw    0x10(r1),r7
217
        l.sw    0x14(r1),r8
218
        l.sw    0x1c(r1),r10
219
        l.sw    0x20(r1),r11
220
        l.sw    0x24(r1),r12
221
        l.sw    0x28(r1),r13
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        l.sw    0x2c(r1),r14
223
        l.sw    0x30(r1),r15
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        l.sw    0x34(r1),r16
225
        l.sw    0x38(r1),r17
226
        l.sw    0x3c(r1),r18
227
        l.sw    0x40(r1),r19
228
        l.sw    0x44(r1),r20
229
        l.sw    0x48(r1),r21
230
        l.sw    0x4c(r1),r22
231
        l.sw    0x50(r1),r23
232
        l.sw    0x54(r1),r24
233
        l.sw    0x58(r1),r25
234
        l.sw    0x5c(r1),r26
235
        l.sw    0x60(r1),r27
236
        l.sw    0x64(r1),r28
237
        l.sw    0x68(r1),r29
238
        l.sw    0x6c(r1),r30
239
        l.sw    0x70(r1),r31
240
        l.jr    r9
241
        l.nop
242
 
243
end_except:             //load back registers from stack r3-r31
244
        l.lwz   r3,0x00(r1)
245
        l.lwz   r4,0x04(r1)
246
        l.lwz   r5,0x08(r1)
247
        l.lwz   r6,0x0c(r1)
248
        l.lwz   r7,0x10(r1)
249
        l.lwz   r8,0x14(r1)
250
        l.lwz   r9,0x18(r1)
251
        l.lwz   r10,0x1c(r1)
252
        l.lwz   r11,0x20(r1)
253
        l.lwz   r12,0x24(r1)
254
        l.lwz   r13,0x28(r1)
255
        l.lwz   r14,0x2c(r1)
256
        l.lwz   r15,0x30(r1)
257
        l.lwz   r16,0x34(r1)
258
        l.lwz   r17,0x38(r1)
259
        l.lwz   r18,0x3c(r1)
260
        l.lwz   r19,0x40(r1)
261
        l.lwz   r20,0x44(r1)
262
        l.lwz   r21,0x48(r1)
263
        l.lwz   r22,0x4c(r1)
264
        l.lwz   r23,0x50(r1)
265
        l.lwz   r24,0x54(r1)
266
        l.lwz   r25,0x58(r1)
267
        l.lwz   r26,0x5c(r1)
268
        l.lwz   r27,0x60(r1)
269
        l.lwz   r28,0x64(r1)
270
        l.lwz   r29,0x68(r1)
271
        l.lwz   r30,0x6c(r1)
272
        l.lwz   r31,0x70(r1)
273
        l.addi  r1,r1,116                               //free stack places
274
        l.rfe                                                   //recover SR register and prior PC (jumps back to program)
275
        l.nop
276
 

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