| Line 28... |
Line 28... |
l.ori r3, r3, SPR_SR_IEE # enable External Interrupt
|
l.ori r3, r3, SPR_SR_IEE # enable External Interrupt
|
l.mtspr r0, r3, SPR_SR # update SR
|
l.mtspr r0, r3, SPR_SR # update SR
|
l.jr r9
|
l.jr r9
|
.size vPortEnableInterrupts, .-vPortEnableInterrupts
|
.size vPortEnableInterrupts, .-vPortEnableInterrupts
|
|
|
.text
|
|
.global vTickHandler
|
.macro portSAVE_REGISTER
|
.type vTickHandler, %function
|
l.addi r1, r1, -116
|
vTickHandler:
|
l.sw 0x00(r1), r3
|
# portSAVE_CONTEXT
|
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 0x18(r1), r9
|
|
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
|
|
.endm
|
|
|
|
|
|
.macro portRESTORE_REGISTER
|
|
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
|
|
.endm
|
|
|
|
|
|
.macro portSAVE_CONTEXT
|
.global pxCurrentTCB
|
.global pxCurrentTCB
|
# make rooms in stack
|
# make rooms in stack
|
l.addi r1, r1, -128
|
l.addi r1, r1, -128
|
# early save r3-r5, these are clobber register
|
# early save r3-r5, these are clobber register
|
l.sw 0x08(r1), r3
|
l.sw 0x08(r1), r3
|
l.sw 0x0C(r1), r4
|
l.sw 0x0C(r1), r4
|
l.sw 0x10(r1), r5
|
l.sw 0x10(r1), r5
|
# save SPR_ESR_BASE(0), SPR_EPCR_BASE(0)
|
# save SPR_ESR_BASE(0), SPR_EPCR_BASE(0)
|
l.mfspr r3, r0, (0<<11) + 64
|
l.mfspr r3, r0, SPR_ESR_BASE
|
l.mfspr r4, r0, (0<<11) + 32
|
l.mfspr r4, r0, SPR_EPCR_BASE
|
l.sw 0x78(r1), r3
|
l.sw 0x78(r1), r3
|
l.sw 0x7C(r1), r4
|
l.sw 0x7C(r1), r4
|
l.sw 0x00(r1), r9
|
l.sw 0x00(r1), r9
|
# Save Context
|
# Save Context
|
l.sw 0x04(r1), r2
|
l.sw 0x04(r1), r2
|
| Line 82... |
Line 147... |
l.sw 0x0(r3), r1
|
l.sw 0x0(r3), r1
|
# restore clobber register
|
# restore clobber register
|
l.lwz r3, 0x08(r1)
|
l.lwz r3, 0x08(r1)
|
l.lwz r4, 0x0C(r1)
|
l.lwz r4, 0x0C(r1)
|
l.lwz r5, 0x10(r1)
|
l.lwz r5, 0x10(r1)
|
|
.endm
|
|
|
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
|
.macro portRESTORE_CONTEXT
|
l.nop
|
|
.if configUSE_PREEMPTION == 0
|
|
# do nothing
|
|
.else
|
|
l.jal vTaskSwitchContext
|
|
l.nop
|
|
.endif
|
|
|
|
# portRESTORE_CONTEXT
|
|
l.movhi r3, hi(pxCurrentTCB)
|
l.movhi r3, hi(pxCurrentTCB)
|
l.ori r3, r3, lo(pxCurrentTCB)
|
l.ori r3, r3, lo(pxCurrentTCB)
|
l.lwz r3, 0x0(r3)
|
l.lwz r3, 0x0(r3)
|
l.lwz r1, 0x0(r3)
|
l.lwz r1, 0x0(r3)
|
# restore context
|
# restore context
|
| Line 135... |
Line 186... |
l.lwz r30, 0x70(r1)
|
l.lwz r30, 0x70(r1)
|
l.lwz r31, 0x74(r1)
|
l.lwz r31, 0x74(r1)
|
# restore SPR_ESR_BASE(0), SPR_EPCR_BASE(0)
|
# restore SPR_ESR_BASE(0), SPR_EPCR_BASE(0)
|
l.lwz r3, 0x78(r1)
|
l.lwz r3, 0x78(r1)
|
l.lwz r4, 0x7C(r1)
|
l.lwz r4, 0x7C(r1)
|
l.mtspr r0, r3, (0<<11) + 64
|
l.mtspr r0, r3, SPR_ESR_BASE
|
l.mtspr r0, r4, (0<<11) + 32
|
l.mtspr r0, r4, SPR_EPCR_BASE
|
# restore clobber register
|
# restore clobber register
|
l.lwz r3, 0x08(r1)
|
l.lwz r3, 0x08(r1)
|
l.lwz r4, 0x0C(r1)
|
l.lwz r4, 0x0C(r1)
|
l.lwz r5, 0x10(r1)
|
l.lwz r5, 0x10(r1)
|
l.addi r1, r1, 128
|
l.addi r1, r1, 128
|
l.rfe
|
l.rfe
|
l.nop
|
l.nop
|
|
.endm
|
.size vTickHandler, .-vTickHandler
|
|
|
|
|
|
.text
|
.text
|
.global PortCC
|
.global vPortTickHandler
|
.type PortCC, %function
|
.type vPortTickHandler, %function
|
PortCC:
|
vPortTickHandler:
|
# portSAVE_CONTEXT
|
portSAVE_CONTEXT
|
.global pxCurrentTCB
|
|
l.lwz r11, 0x0(r1)
|
|
l.addi r1, r1, 4
|
|
# make rooms in stack
|
|
l.addi r1, r1, -128
|
|
# 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, (0<<11) + 64
|
|
l.mfspr r4, r0, (0<<11) + 32
|
|
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)
|
|
|
|
|
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
|
l.nop
|
|
.if configUSE_PREEMPTION == 0
|
|
# do nothing
|
|
.else
|
l.jal vTaskSwitchContext
|
l.jal vTaskSwitchContext
|
l.nop
|
l.nop
|
|
.endif
|
|
|
# portRESTORE_CONTEXT
|
portRESTORE_CONTEXT
|
l.movhi r3, hi(pxCurrentTCB)
|
.size vPortTickHandler, .-vPortTickHandler
|
l.ori r3, r3, lo(pxCurrentTCB)
|
|
l.lwz r3, 0x0(r3)
|
|
l.lwz r1, 0x0(r3)
|
.text
|
# restore context
|
.global vPortSystemCall
|
l.lwz r9, 0x00(r1)
|
.type vPortSystemCall, %function
|
l.lwz r2, 0x04(r1)
|
vPortSystemCall:
|
l.lwz r6, 0x14(r1)
|
l.sfeqi r11, 0xFCC
|
l.lwz r7, 0x18(r1)
|
l.bf 1f
|
l.lwz r8, 0x1C(r1)
|
l.nop
|
l.lwz r10, 0x20(r1)
|
|
l.lwz r11, 0x24(r1)
|
l.sw -120(r1), r11
|
l.lwz r12, 0x28(r1)
|
l.lwz r11, -4(r1)
|
l.lwz r13, 0x2C(r1)
|
portSAVE_REGISTER
|
l.lwz r14, 0x30(r1)
|
|
l.lwz r15, 0x34(r1)
|
l.jal syscall_except
|
l.lwz r16, 0x38(r1)
|
l.lwz r3, -4(r1)
|
l.lwz r17, 0x3C(r1)
|
|
l.lwz r18, 0x40(r1)
|
portRESTORE_REGISTER
|
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, (0<<11) + 64
|
|
l.mtspr r0, r4, (0<<11) + 32
|
|
# restore clobber register
|
|
l.lwz r3, 0x08(r1)
|
|
l.lwz r4, 0x0C(r1)
|
|
l.lwz r5, 0x10(r1)
|
|
l.addi r1, r1, 128
|
|
l.rfe
|
l.rfe
|
l.nop
|
l.nop
|
|
|
.size PortCC, .-PortCC
|
1:
|
|
l.sw -132(r1), r11
|
|
l.lwz r11, -4(r1)
|
|
portSAVE_CONTEXT
|
|
|
|
l.jal syscall_except
|
|
l.lwz r3, -4(r1)
|
|
|
|
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
|
