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#include "port_spr_defs.h"
 
        .file           "portasm.S"
        .section        .text
 
.macro portSAVE_CONTEXT
        .global pxCurrentTCB
        # make rooms in stack
        l.addi  r1, r1, -132
        # early save r3-r5, these are clobber register
        l.sw    0x08(r1), r3
        l.sw    0x0C(r1), r4
        l.sw    0x10(r1), r5
        # save SPR_ESR_BASE(0), SPR_EPCR_BASE(0)
        l.mfspr r3, r0, SPR_ESR_BASE
        l.mfspr r4, r0, SPR_EPCR_BASE
        l.sw    0x78(r1), r3
        l.sw    0x7C(r1), r4
        l.sw    0x00(r1), r9
        # Save Context
        l.sw    0x04(r1), r2
        l.sw    0x14(r1), r6
        l.sw    0x18(r1), r7
        l.sw    0x1C(r1), r8
        l.sw    0x20(r1), r10
        l.sw    0x24(r1), r11
        l.sw    0x28(r1), r12
        l.sw    0x2C(r1), r13
        l.sw    0x30(r1), r14
        l.sw    0x34(r1), r15
        l.sw    0x38(r1), r16
        l.sw    0x3C(r1), r17
        l.sw    0x40(r1), r18
        l.sw    0x44(r1), r19
        l.sw    0x48(r1), r20
        l.sw    0x4C(r1), r21
        l.sw    0x50(r1), r22
        l.sw    0x54(r1), r23
        l.sw    0x58(r1), r24
        l.sw    0x5C(r1), r25
        l.sw    0x60(r1), r26
        l.sw    0x64(r1), r27
        l.sw    0x68(r1), r28
        l.sw    0x6C(r1), r29
        l.sw    0x70(r1), r30
        l.sw    0x74(r1), r31
        # Save the top of stack in TCB
        l.movhi r3, hi(pxCurrentTCB)
        l.ori   r3, r3, lo(pxCurrentTCB)
        l.lwz   r3, 0x0(r3)
        l.sw    0x0(r3), r1
        # restore clobber register
        l.lwz   r3, 0x08(r1)
        l.lwz   r4, 0x0C(r1)
        l.lwz   r5, 0x10(r1)
.endm
 
 
.macro portRESTORE_CONTEXT
        l.movhi r3, hi(pxCurrentTCB)
        l.ori   r3, r3, lo(pxCurrentTCB)
        l.lwz   r3, 0x0(r3)
        l.lwz   r1, 0x0(r3)
        # restore context
        l.lwz   r9, 0x00(r1)
        l.lwz   r2, 0x04(r1)
        l.lwz   r6, 0x14(r1)
        l.lwz   r7, 0x18(r1)
        l.lwz   r8, 0x1C(r1)
        l.lwz   r10, 0x20(r1)
        l.lwz   r11, 0x24(r1)
        l.lwz   r12, 0x28(r1)
        l.lwz   r13, 0x2C(r1)
        l.lwz   r14, 0x30(r1)
        l.lwz   r15, 0x34(r1)
        l.lwz   r16, 0x38(r1)
        l.lwz   r17, 0x3C(r1)
        l.lwz   r18, 0x40(r1)
        l.lwz   r19, 0x44(r1)
        l.lwz   r20, 0x48(r1)
        l.lwz   r21, 0x4C(r1)
        l.lwz   r22, 0x50(r1)
        l.lwz   r23, 0x54(r1)
        l.lwz   r24, 0x58(r1)
        l.lwz   r25, 0x5C(r1)
        l.lwz   r26, 0x60(r1)
        l.lwz   r27, 0x64(r1)
        l.lwz   r28, 0x68(r1)
        l.lwz   r29, 0x6C(r1)
        l.lwz   r30, 0x70(r1)
        l.lwz   r31, 0x74(r1)
        # restore SPR_ESR_BASE(0), SPR_EPCR_BASE(0)
        l.lwz   r3, 0x78(r1)
        l.lwz   r4, 0x7C(r1)
        l.mtspr r0, r3, SPR_ESR_BASE
        l.mtspr r0, r4, SPR_EPCR_BASE
        # restore clobber register
        l.lwz   r3, 0x08(r1)
        l.lwz   r4, 0x0C(r1)
        l.lwz   r5, 0x10(r1)
        l.addi  r1, r1, 132
        l.rfe
        l.nop
.endm
 
 
.text
.global vPortTickHandler
.type   vPortTickHandler, %function
vPortTickHandler:
        portSAVE_CONTEXT
 
        l.mfspr r3, r0, SPR_TTMR
        l.movhi r4, hi(SPR_TTMR_IP)
        l.ori   r4, r4, lo(SPR_TTMR_IP)
        l.xori  r4, r4, 0xffffffff
        l.and   r3, r3, r4                              # clear tick timer interrupt
        l.mtspr r0, r3, SPR_TTMR
 
        l.jal   vTaskIncrementTick
        l.nop
.if configUSE_PREEMPTION == 0
        # do nothing
.else
        l.jal   vTaskSwitchContext
        l.nop
.endif
 
        portRESTORE_CONTEXT
.size   vPortTickHandler, .-vPortTickHandler
 
 
.text
.global vPortSystemCall
.type   vPortSystemCall, %function
vPortSystemCall:
        portSAVE_CONTEXT
 
        l.jal   vTaskSwitchContext
        l.nop
 
        portRESTORE_CONTEXT
.size   vPortSystemCall, .-vPortSystemCall
 
 
.text
.global vPortExtIntHandler
.type   vPortExtIntHandler, %function
vPortExtIntHandler:
        portSAVE_CONTEXT
 
    l.jal       int_main
        l.nop
 
.if configUSE_PREEMPTION == 0
        # do nothing
.else
        l.jal   vTaskSwitchContext
        l.nop
.endif
 
        portRESTORE_CONTEXT
.size   vPortExtIntHandler, .-vPortExtIntHandler
 
 
.text
.global vPortMiscIntHandler
.type   vPortMiscIntHandler, %function
vPortMiscIntHandler:
        portSAVE_CONTEXT
 
    l.jal       misc_int_handler
        l.lwz   r3, -4(r1)
 
.if configUSE_PREEMPTION == 0
        # do nothing
.else
        l.jal   vTaskSwitchContext
        l.nop
.endif
 
        portRESTORE_CONTEXT
.size   vPortMiscIntHandler, .-vPortMiscIntHandler

Line No.	Rev	Author	Line
1	572	jeremybenn	`#include "port_spr_defs.h"`
2
3			`.file "portasm.S"`
4			`.section .text`
5
6	621	filepang	`.macro portSAVE_CONTEXT`
7	572	jeremybenn	`.global pxCurrentTCB`
8			`# make rooms in stack`
9	665	filepang	`l.addi r1, r1, -132`
10	572	jeremybenn	`# early save r3-r5, these are clobber register`
11			`l.sw 0x08(r1), r3`
12			`l.sw 0x0C(r1), r4`
13			`l.sw 0x10(r1), r5`
14			`# save SPR_ESR_BASE(0), SPR_EPCR_BASE(0)`
15	621	filepang	`l.mfspr r3, r0, SPR_ESR_BASE`
16			`l.mfspr r4, r0, SPR_EPCR_BASE`
17	572	jeremybenn	`l.sw 0x78(r1), r3`
18			`l.sw 0x7C(r1), r4`
19			`l.sw 0x00(r1), r9`
20			`# Save Context`
21			`l.sw 0x04(r1), r2`
22			`l.sw 0x14(r1), r6`
23			`l.sw 0x18(r1), r7`
24			`l.sw 0x1C(r1), r8`
25			`l.sw 0x20(r1), r10`
26			`l.sw 0x24(r1), r11`
27			`l.sw 0x28(r1), r12`
28			`l.sw 0x2C(r1), r13`
29			`l.sw 0x30(r1), r14`
30			`l.sw 0x34(r1), r15`
31			`l.sw 0x38(r1), r16`
32			`l.sw 0x3C(r1), r17`
33			`l.sw 0x40(r1), r18`
34			`l.sw 0x44(r1), r19`
35			`l.sw 0x48(r1), r20`
36			`l.sw 0x4C(r1), r21`
37			`l.sw 0x50(r1), r22`
38			`l.sw 0x54(r1), r23`
39			`l.sw 0x58(r1), r24`
40			`l.sw 0x5C(r1), r25`
41			`l.sw 0x60(r1), r26`
42			`l.sw 0x64(r1), r27`
43			`l.sw 0x68(r1), r28`
44			`l.sw 0x6C(r1), r29`
45			`l.sw 0x70(r1), r30`
46			`l.sw 0x74(r1), r31`
47			`# Save the top of stack in TCB`
48			`l.movhi r3, hi(pxCurrentTCB)`
49			`l.ori r3, r3, lo(pxCurrentTCB)`
50			`l.lwz r3, 0x0(r3)`
51			`l.sw 0x0(r3), r1`
52			`# restore clobber register`
53			`l.lwz r3, 0x08(r1)`
54			`l.lwz r4, 0x0C(r1)`
55			`l.lwz r5, 0x10(r1)`
56	621	filepang	`.endm`
57	572	jeremybenn
58	621	filepang
59			`.macro portRESTORE_CONTEXT`
60	572	jeremybenn	`l.movhi r3, hi(pxCurrentTCB)`
61			`l.ori r3, r3, lo(pxCurrentTCB)`
62			`l.lwz r3, 0x0(r3)`
63			`l.lwz r1, 0x0(r3)`
64			`# restore context`
65			`l.lwz r9, 0x00(r1)`
66			`l.lwz r2, 0x04(r1)`
67			`l.lwz r6, 0x14(r1)`
68			`l.lwz r7, 0x18(r1)`
69			`l.lwz r8, 0x1C(r1)`
70			`l.lwz r10, 0x20(r1)`
71			`l.lwz r11, 0x24(r1)`
72			`l.lwz r12, 0x28(r1)`
73			`l.lwz r13, 0x2C(r1)`
74			`l.lwz r14, 0x30(r1)`
75			`l.lwz r15, 0x34(r1)`
76			`l.lwz r16, 0x38(r1)`
77			`l.lwz r17, 0x3C(r1)`
78			`l.lwz r18, 0x40(r1)`
79			`l.lwz r19, 0x44(r1)`
80			`l.lwz r20, 0x48(r1)`
81			`l.lwz r21, 0x4C(r1)`
82			`l.lwz r22, 0x50(r1)`
83			`l.lwz r23, 0x54(r1)`
84			`l.lwz r24, 0x58(r1)`
85			`l.lwz r25, 0x5C(r1)`
86			`l.lwz r26, 0x60(r1)`
87			`l.lwz r27, 0x64(r1)`
88			`l.lwz r28, 0x68(r1)`
89			`l.lwz r29, 0x6C(r1)`
90			`l.lwz r30, 0x70(r1)`
91			`l.lwz r31, 0x74(r1)`
92			`# restore SPR_ESR_BASE(0), SPR_EPCR_BASE(0)`
93			`l.lwz r3, 0x78(r1)`
94			`l.lwz r4, 0x7C(r1)`
95	621	filepang	`l.mtspr r0, r3, SPR_ESR_BASE`
96			`l.mtspr r0, r4, SPR_EPCR_BASE`
97	572	jeremybenn	`# restore clobber register`
98			`l.lwz r3, 0x08(r1)`
99			`l.lwz r4, 0x0C(r1)`
100			`l.lwz r5, 0x10(r1)`
101	665	filepang	`l.addi r1, r1, 132`
102	572	jeremybenn	`l.rfe`
103			`l.nop`
104	621	filepang	`.endm`
105	572	jeremybenn
106
107	621	filepang	`.text`
108			`.global vPortTickHandler`
109			`.type vPortTickHandler, %function`
110			`vPortTickHandler:`
111			`portSAVE_CONTEXT`
112
113			`l.mfspr r3, r0, SPR_TTMR`
114			`l.movhi r4, hi(SPR_TTMR_IP)`
115			`l.ori r4, r4, lo(SPR_TTMR_IP)`
116			`l.xori r4, r4, 0xffffffff`
117			`l.and r3, r3, r4 # clear tick timer interrupt`
118			`l.mtspr r0, r3, SPR_TTMR`
119	572	jeremybenn
120	621	filepang	`l.jal vTaskIncrementTick`
121			`l.nop`
122			`.if configUSE_PREEMPTION == 0`
123			`# do nothing`
124			`.else`
125			`l.jal vTaskSwitchContext`
126			`l.nop`
127			`.endif`
128
129			`portRESTORE_CONTEXT`
130			`.size vPortTickHandler, .-vPortTickHandler`
131
132
133	572	jeremybenn	`.text`
134	621	filepang	`.global vPortSystemCall`
135			`.type vPortSystemCall, %function`
136			`vPortSystemCall:`
137	664	filepang	`portSAVE_CONTEXT`
138	621	filepang
139	664	filepang	`l.jal vTaskSwitchContext`
140	572	jeremybenn	`l.nop`
141	621	filepang
142			`portRESTORE_CONTEXT`
143			`.size vPortSystemCall, .-vPortSystemCall`
144
145
146			`.text`
147			`.global vPortExtIntHandler`
148			`.type vPortExtIntHandler, %function`
149			`vPortExtIntHandler:`
150			`portSAVE_CONTEXT`
151
152			`l.jal int_main`
153			`l.nop`
154
155			`.if configUSE_PREEMPTION == 0`
156			`# do nothing`
157			`.else`
158	572	jeremybenn	`l.jal vTaskSwitchContext`
159			`l.nop`
160	621	filepang	`.endif`
161	572	jeremybenn
162	621	filepang	`portRESTORE_CONTEXT`
163			`.size vPortExtIntHandler, .-vPortExtIntHandler`
164	572	jeremybenn
165	621	filepang
166			`.text`
167			`.global vPortMiscIntHandler`
168			`.type vPortMiscIntHandler, %function`
169			`vPortMiscIntHandler:`
170			`portSAVE_CONTEXT`
171
172			`l.jal misc_int_handler`
173			`l.lwz r3, -4(r1)`
174
175			`.if configUSE_PREEMPTION == 0`
176			`# do nothing`
177			`.else`
178			`l.jal vTaskSwitchContext`
179			`l.nop`
180			`.endif`
181
182			`portRESTORE_CONTEXT`
183			`.size vPortMiscIntHandler, .-vPortMiscIntHandler`

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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Source/] [portable/] [GCC/] [OpenRISC/] [portasm.S] - Blame information for rev 669