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#include "spr_defs.h"
 
// Linked from 0x200, so subtract 0x200 from each .org
.section .vectors, "ax"
 
/*
.org 0x100
 
_reset:
        l.nop
        l.j     _reset_except
        l.nop
*/
.org 0x000
 
_except_200:
        l.nop
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
    l.nop
 
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
        l.j     _buserr_except
        l.nop
 
.org 0x100
 
_except_300:
        l.nop
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
    l.nop
 
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
        l.j     _dpf_except
        l.nop
 
.org 0x200
 
_except_400:
        l.nop
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
    l.nop
 
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
        l.j     _ipf_except
        l.nop
 
.org 0x300
 
_except_500:
        l.nop
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
    l.nop
 
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
        l.j     _lpint_except
        l.nop
 
.org 0x400
 
_except_600:
        l.nop
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
    l.nop
 
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
        l.j     _align_except
        l.nop
 
.org 0x500
 
_except_700:
        l.nop
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
    l.nop
 
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
        l.j     _illegal_except
        l.nop
 
.org 0x600
 
_except_800:
        l.nop
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
    l.nop
 
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
    l.j _hpint_except                   //jmp to C interrupt handler (returns later to end_except)
    l.nop
 
 
.org 0x700
 
_except_900:
        l.nop
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
    l.nop
 
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
        l.j     _dtlbmiss_except
        l.nop
 
.org 0x800
 
_except_a00:
        l.nop
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
    l.nop
 
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
        l.j     _itlbmiss_except
        l.nop
 
.org 0x900
 
_except_b00:
        l.nop
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
    l.nop
 
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
        l.j     _range_except
        l.nop
 
.org 0xa00
 
_except_c00:
        l.nop
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
    l.nop
 
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
        l.j     _syscall_except
        l.nop
 
.org 0xb00
 
_except_d00:
        l.nop
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
    l.nop
 
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
        l.j     _res1_except
        l.nop
 
.org 0xc00
 
_except_e00:
        l.nop
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
    l.nop
 
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
        l.j     _trap_except
        l.nop
 
.org 0xd00
 
_except_f00:
        l.nop
    l.addi  r1,r1,-116                  //free 29 words of stack (stack is r1)
    l.sw    0x18(r1),r9                 //save register r9(return addr) to stack
    l.jal   store_regs                  //save registers r3-r31 (except r9) to stack (r9 is changed here)
    l.nop
 
    l.movhi r9,hi(end_except)           //set return addr to end_except instruction
    l.ori   r9,r9,lo(end_except)        //set return addr to end_except instruction
        l.j     _res2_except
        l.nop
 
store_regs:             //save registers r3-r31 (except r9) to stack
        l.sw    0x00(r1),r3
        l.sw    0x04(r1),r4
        l.sw    0x08(r1),r5
        l.sw    0x0c(r1),r6
        l.sw    0x10(r1),r7
        l.sw    0x14(r1),r8
        l.sw    0x1c(r1),r10
        l.sw    0x20(r1),r11
        l.sw    0x24(r1),r12
        l.sw    0x28(r1),r13
        l.sw    0x2c(r1),r14
        l.sw    0x30(r1),r15
        l.sw    0x34(r1),r16
        l.sw    0x38(r1),r17
        l.sw    0x3c(r1),r18
        l.sw    0x40(r1),r19
        l.sw    0x44(r1),r20
        l.sw    0x48(r1),r21
        l.sw    0x4c(r1),r22
        l.sw    0x50(r1),r23
        l.sw    0x54(r1),r24
        l.sw    0x58(r1),r25
        l.sw    0x5c(r1),r26
        l.sw    0x60(r1),r27
        l.sw    0x64(r1),r28
        l.sw    0x68(r1),r29
        l.sw    0x6c(r1),r30
        l.sw    0x70(r1),r31
        l.jr    r9
        l.nop
 
end_except:             //load back registers from stack r3-r31
        l.lwz   r3,0x00(r1)
        l.lwz   r4,0x04(r1)
        l.lwz   r5,0x08(r1)
        l.lwz   r6,0x0c(r1)
        l.lwz   r7,0x10(r1)
        l.lwz   r8,0x14(r1)
        l.lwz   r9,0x18(r1)
        l.lwz   r10,0x1c(r1)
        l.lwz   r11,0x20(r1)
        l.lwz   r12,0x24(r1)
        l.lwz   r13,0x28(r1)
        l.lwz   r14,0x2c(r1)
        l.lwz   r15,0x30(r1)
        l.lwz   r16,0x34(r1)
        l.lwz   r17,0x38(r1)
        l.lwz   r18,0x3c(r1)
        l.lwz   r19,0x40(r1)
        l.lwz   r20,0x44(r1)
        l.lwz   r21,0x48(r1)
        l.lwz   r22,0x4c(r1)
        l.lwz   r23,0x50(r1)
        l.lwz   r24,0x54(r1)
        l.lwz   r25,0x58(r1)
        l.lwz   r26,0x5c(r1)
        l.lwz   r27,0x60(r1)
        l.lwz   r28,0x64(r1)
        l.lwz   r29,0x68(r1)
        l.lwz   r30,0x6c(r1)
        l.lwz   r31,0x70(r1)
        l.addi  r1,r1,116                               //free stack places
        l.rfe                                                   //recover SR register and prior PC (jumps back to program)
        l.nop
 

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[/] [minsoc/] [trunk/] [sw/] [support/] [except.S] - Blame information for rev 2

Line No.	Rev	Author	Line
1	2	rfajardo	`#include "spr_defs.h"`
2
3			`// Linked from 0x200, so subtract 0x200 from each .org`
4			`.section .vectors, "ax"`
5
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`
34			`l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)`
35			`l.nop`
36
37			`l.movhi r9,hi(end_except) //set return addr to end_except instruction`
38			`l.ori r9,r9,lo(end_except) //set return addr to end_except instruction`
39			`l.j _dpf_except`
40			`l.nop`
41
42			`.org 0x200`
43
44			`_except_400:`
45			`l.nop`
46			`l.addi r1,r1,-116 //free 29 words of stack (stack is r1)`
47			`l.sw 0x18(r1),r9 //save register r9(return addr) to stack`
48			`l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)`
49			`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`
62			`l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)`
63			`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			`l.j _lpint_except`
68			`l.nop`
69
70			`.org 0x400`
71
72			`_except_600:`
73			`l.nop`
74			`l.addi r1,r1,-116 //free 29 words of stack (stack is r1)`
75			`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)`
77			`l.nop`
78
79			`l.movhi r9,hi(end_except) //set return addr to end_except instruction`
80			`l.ori r9,r9,lo(end_except) //set return addr to end_except instruction`
81			`l.j _align_except`
82			`l.nop`
83
84			`.org 0x500`
85
86			`_except_700:`
87			`l.nop`
88			`l.addi r1,r1,-116 //free 29 words of stack (stack is r1)`
89			`l.sw 0x18(r1),r9 //save register r9(return addr) to stack`
90			`l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)`
91			`l.nop`
92
93			`l.movhi r9,hi(end_except) //set return addr to end_except instruction`
94			`l.ori r9,r9,lo(end_except) //set return addr to end_except instruction`
95			`l.j _illegal_except`
96			`l.nop`
97
98			`.org 0x600`
99
100			`_except_800:`
101			`l.nop`
102			`l.addi r1,r1,-116 //free 29 words of stack (stack is r1)`
103			`l.sw 0x18(r1),r9 //save register r9(return addr) to stack`
104			`l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)`
105			`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			`l.j _hpint_except //jmp to C interrupt handler (returns later to end_except)`
110			`l.nop`
111
112
113			`.org 0x700`
114
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`
128
129			`_except_a00:`
130			`l.nop`
131			`l.addi r1,r1,-116 //free 29 words of stack (stack is r1)`
132			`l.sw 0x18(r1),r9 //save register r9(return addr) to stack`
133			`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`
137			`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)`
146			`l.sw 0x18(r1),r9 //save register r9(return addr) to stack`
147			`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`
166			`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`
213			`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`
222			`l.sw 0x2c(r1),r14`
223			`l.sw 0x30(r1),r15`
224			`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