528 lines
20 KiB
Plaintext
528 lines
20 KiB
Plaintext
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ARM Macro Assembler Page 1
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1 00000000 ;/*
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2 00000000 ; * Copyright (c) 2006-2018, RT-Thread Development Team
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3 00000000 ; *
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4 00000000 ; * SPDX-License-Identifier: Apache-2.0
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5 00000000 ; *
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6 00000000 ; * Change Logs:
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7 00000000 ; * Date Author Notes
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8 00000000 ; * 2010-01-25 Bernard first version
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9 00000000 ; * 2012-06-01 aozima set pendsv priority to 0
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xFF.
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10 00000000 ; * 2012-08-17 aozima fixed bug: store r8 - r1
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1.
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11 00000000 ; * 2013-06-18 aozima add restore MSP feature.
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12 00000000 ; */
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13 00000000
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14 00000000 ;/**
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15 00000000 ; * @addtogroup CORTEX-M0
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16 00000000 ; */
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17 00000000 ;/*@{*/
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18 00000000
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19 00000000 E000ED08
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SCB_VTOR
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EQU 0xE000ED08 ; Vector Table Offs
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et Register
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20 00000000 E000ED04
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NVIC_INT_CTRL
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EQU 0xE000ED04 ; interrupt control
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state register
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21 00000000 E000ED20
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NVIC_SHPR3
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EQU 0xE000ED20 ; system priority r
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egister (2)
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22 00000000 FFFF0000
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NVIC_PENDSV_PRI
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EQU 0xFFFF0000 ; PendSV and SysTic
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k priority value (l
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owest)
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23 00000000 10000000
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NVIC_PENDSVSET
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EQU 0x10000000 ; value to trigger
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PendSV exception
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24 00000000
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25 00000000 AREA |.text|, CODE, READONLY, ALIGN=
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2
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26 00000000 THUMB
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27 00000000 REQUIRE8
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28 00000000 PRESERVE8
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29 00000000
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30 00000000 IMPORT rt_thread_switch_interrupt_flag
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31 00000000 IMPORT rt_interrupt_from_thread
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32 00000000 IMPORT rt_interrupt_to_thread
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33 00000000
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34 00000000 ;/*
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35 00000000 ; * rt_base_t rt_hw_interrupt_disable();
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36 00000000 ; */
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37 00000000 rt_hw_interrupt_disable
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PROC
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38 00000000 EXPORT rt_hw_interrupt_disable
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ARM Macro Assembler Page 2
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39 00000000 F3EF 8010 MRS r0, PRIMASK
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40 00000004 B672 CPSID I
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41 00000006 4770 BX LR
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42 00000008 ENDP
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43 00000008
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44 00000008 ;/*
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45 00000008 ; * void rt_hw_interrupt_enable(rt_base_t level);
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46 00000008 ; */
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47 00000008 rt_hw_interrupt_enable
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PROC
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48 00000008 EXPORT rt_hw_interrupt_enable
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49 00000008 F380 8810 MSR PRIMASK, r0
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50 0000000C 4770 BX LR
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51 0000000E ENDP
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52 0000000E
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53 0000000E ;/*
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54 0000000E ; * void rt_hw_context_switch(rt_uint32 from, rt_uint32
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to);
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55 0000000E ; * r0 --> from
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56 0000000E ; * r1 --> to
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57 0000000E ; */
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58 0000000E rt_hw_context_switch_interrupt
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59 0000000E EXPORT rt_hw_context_switch_interrupt
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60 0000000E rt_hw_context_switch
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PROC
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61 0000000E EXPORT rt_hw_context_switch
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62 0000000E
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63 0000000E ; set rt_thread_switch_interrupt_flag to 1
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64 0000000E 4A2A LDR r2, =rt_thread_switch_interrupt
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_flag
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65 00000010 6813 LDR r3, [r2]
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66 00000012 2B01 CMP r3, #1
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67 00000014 D003 BEQ _reswitch
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68 00000016 2301 MOVS r3, #0x01
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69 00000018 6013 STR r3, [r2]
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70 0000001A
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71 0000001A 4A28 LDR r2, =rt_interrupt_from_thread ;
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set rt_interrupt_f
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rom_thread
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72 0000001C 6010 STR r0, [r2]
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73 0000001E
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74 0000001E _reswitch
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75 0000001E 4A28 LDR r2, =rt_interrupt_to_thread ; s
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et rt_interrupt_to_
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thread
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76 00000020 6011 STR r1, [r2]
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77 00000022
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78 00000022 4828 LDR r0, =NVIC_INT_CTRL ; trigger th
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e PendSV exception
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(causes context swi
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tch)
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79 00000024 4928 LDR r1, =NVIC_PENDSVSET
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80 00000026 6001 STR r1, [r0]
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81 00000028 4770 BX LR
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82 0000002A ENDP
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83 0000002A
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84 0000002A ; r0 --> switch from thread stack
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85 0000002A ; r1 --> switch to thread stack
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86 0000002A ; psr, pc, lr, r12, r3, r2, r1, r0 are pushed into [from
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ARM Macro Assembler Page 3
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] stack
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87 0000002A PendSV_Handler
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PROC
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88 0000002A EXPORT PendSV_Handler
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89 0000002A
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90 0000002A ; disable interrupt to protect context switch
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91 0000002A F3EF 8210 MRS r2, PRIMASK
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92 0000002E B672 CPSID I
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93 00000030
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94 00000030 ; get rt_thread_switch_interrupt_flag
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95 00000030 4821 LDR r0, =rt_thread_switch_interrupt
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_flag
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96 00000032 6801 LDR r1, [r0]
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97 00000034 2900 CMP r1, #0x00
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98 00000036 D01D BEQ pendsv_exit ; pendsv already ha
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ndled
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99 00000038
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100 00000038 ; clear rt_thread_switch_interrupt_flag to 0
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101 00000038 2100 MOVS r1, #0x00
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102 0000003A 6001 STR r1, [r0]
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103 0000003C
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104 0000003C 481F LDR r0, =rt_interrupt_from_thread
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105 0000003E 6801 LDR r1, [r0]
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106 00000040 2900 CMP r1, #0x00
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107 00000042 D00A BEQ switch_to_thread ; skip registe
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r save at the first
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time
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108 00000044
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109 00000044 F3EF 8109 MRS r1, psp ; get from thread s
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tack pointer
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110 00000048
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111 00000048 3920 SUBS r1, r1, #0x20 ; space for {r4 -
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r7} and {r8 - r11}
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112 0000004A 6800 LDR r0, [r0]
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113 0000004C 6001 STR r1, [r0] ; update from threa
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d stack pointer
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114 0000004E
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115 0000004E C1F0 STMIA r1!, {r4 - r7} ; push thread {r
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4 - r7} register to
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thread stack
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116 00000050
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117 00000050 4644 MOV r4, r8 ; mov thread {r8 -
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r11} to {r4 - r7}
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118 00000052 464D MOV r5, r9
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119 00000054 4656 MOV r6, r10
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120 00000056 465F MOV r7, r11
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121 00000058 C1F0 STMIA r1!, {r4 - r7} ; push thread {r
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8 - r11} high regis
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ter to thread stack
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122 0000005A
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123 0000005A switch_to_thread
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124 0000005A 4919 LDR r1, =rt_interrupt_to_thread
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125 0000005C 6809 LDR r1, [r1]
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126 0000005E 6809 LDR r1, [r1] ; load thread stack
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pointer
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127 00000060
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128 00000060 C9F0 LDMIA r1!, {r4 - r7} ; pop thread {r4
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ARM Macro Assembler Page 4
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- r7} register fro
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m thread stack
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129 00000062 B4F0 PUSH {r4 - r7} ; push {r4 - r7} to
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MSP for copy {r8 -
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r11}
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130 00000064
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131 00000064 C9F0 LDMIA r1!, {r4 - r7} ; pop thread {r8
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- r11} high regist
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er from thread stac
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k to {r4 - r7}
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132 00000066 46A0 MOV r8, r4 ; mov {r4 - r7} to
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{r8 - r11}
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133 00000068 46A9 MOV r9, r5
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134 0000006A 46B2 MOV r10, r6
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135 0000006C 46BB MOV r11, r7
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136 0000006E
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137 0000006E BCF0 POP {r4 - r7} ; pop {r4 - r7} fro
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m MSP
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138 00000070
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139 00000070 F381 8809 MSR psp, r1 ; update stack poin
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ter
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140 00000074
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141 00000074 pendsv_exit
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142 00000074 ; restore interrupt
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143 00000074 F382 8810 MSR PRIMASK, r2
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144 00000078
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145 00000078 2004 MOVS r0, #0x04
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146 0000007A 4240 RSBS r0, r0, #0x00
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147 0000007C 4700 BX r0
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148 0000007E ENDP
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149 0000007E
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150 0000007E ;/*
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151 0000007E ; * void rt_hw_context_switch_to(rt_uint32 to);
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152 0000007E ; * r0 --> to
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153 0000007E ; * this fucntion is used to perform the first thread sw
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itch
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154 0000007E ; */
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155 0000007E rt_hw_context_switch_to
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PROC
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156 0000007E EXPORT rt_hw_context_switch_to
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157 0000007E ; set to thread
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158 0000007E 4910 LDR r1, =rt_interrupt_to_thread
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159 00000080 6008 STR r0, [r1]
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160 00000082
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161 00000082 ; set from thread to 0
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162 00000082 490E LDR r1, =rt_interrupt_from_thread
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163 00000084 2000 MOVS r0, #0x0
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164 00000086 6008 STR r0, [r1]
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165 00000088
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166 00000088 ; set interrupt flag to 1
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167 00000088 490B LDR r1, =rt_thread_switch_interrupt
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_flag
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168 0000008A 2001 MOVS r0, #1
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169 0000008C 6008 STR r0, [r1]
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170 0000008E
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171 0000008E ; set the PendSV and SysTick exception priority
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172 0000008E 480F LDR r0, =NVIC_SHPR3
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173 00000090 490F LDR r1, =NVIC_PENDSV_PRI
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174 00000092 6802 LDR r2, [r0,#0x00] ; read
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ARM Macro Assembler Page 5
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175 00000094 4311 ORRS r1,r1,r2 ; modify
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176 00000096 6001 STR r1, [r0] ; write-back
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177 00000098
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178 00000098 ; trigger the PendSV exception (causes context switch)
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179 00000098 480A LDR r0, =NVIC_INT_CTRL
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180 0000009A 490B LDR r1, =NVIC_PENDSVSET
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181 0000009C 6001 STR r1, [r0]
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182 0000009E
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183 0000009E ; restore MSP
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184 0000009E 480D LDR r0, =SCB_VTOR
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185 000000A0 6800 LDR r0, [r0]
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186 000000A2 6800 LDR r0, [r0]
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187 000000A4 F380 8808 MSR msp, r0
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188 000000A8
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189 000000A8 ; enable interrupts at processor level
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190 000000A8 B662 CPSIE I
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191 000000AA
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192 000000AA ; never reach here!
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193 000000AA ENDP
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194 000000AA
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195 000000AA ; compatible with old version
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196 000000AA rt_hw_interrupt_thread_switch
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PROC
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197 000000AA EXPORT rt_hw_interrupt_thread_switch
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198 000000AA 4770 BX lr
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199 000000AC ENDP
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200 000000AC
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201 000000AC IMPORT rt_hw_hard_fault_exception
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202 000000AC
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203 000000AC HardFault_Handler
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PROC
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204 000000AC EXPORT HardFault_Handler
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205 000000AC
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206 000000AC ; get current context
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207 000000AC F3EF 8009 MRS r0, psp ; get fault thread
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stack pointer
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208 000000B0 B500 PUSH {lr}
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209 000000B2 F7FF FFFE BL rt_hw_hard_fault_exception
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210 000000B6 BD00 POP {pc}
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211 000000B8 ENDP
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212 000000B8
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213 000000B8 ALIGN 4
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214 000000B8
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215 000000B8 END
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00000000
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00000000
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00000000
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E000ED04
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10000000
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E000ED20
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FFFF0000
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E000ED08
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Command Line: --debug --xref --diag_suppress=9931 --cpu=Cortex-M0+ --apcs=inter
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work --depend=.\context_rvds.d -o.\context_rvds.o -IC:\Users\16005\AppData\Loca
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l\Arm\Packs\HED\CIU32L0xx_DFP\1.2.5\Drivers\CMSIS\Device\CIU32L051\Include --pr
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edefine="__MICROLIB SETA 1" --predefine="__UVISION_VERSION SETA 539" --predefin
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e="CIU32L051 SETA 1" --list=.\listings\context_rvds.lst ..\RTOS\context_rvds.S
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ARM Macro Assembler Page 1 Alphabetic symbol ordering
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Relocatable symbols
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.text 00000000
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Symbol: .text
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Definitions
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At line 25 in file ..\RTOS\context_rvds.S
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Uses
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None
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Comment: .text unused
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HardFault_Handler 000000AC
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Symbol: HardFault_Handler
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Definitions
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At line 203 in file ..\RTOS\context_rvds.S
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Uses
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At line 204 in file ..\RTOS\context_rvds.S
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Comment: HardFault_Handler used once
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PendSV_Handler 0000002A
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Symbol: PendSV_Handler
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Definitions
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At line 87 in file ..\RTOS\context_rvds.S
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Uses
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At line 88 in file ..\RTOS\context_rvds.S
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Comment: PendSV_Handler used once
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_reswitch 0000001E
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Symbol: _reswitch
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Definitions
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At line 74 in file ..\RTOS\context_rvds.S
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Uses
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At line 67 in file ..\RTOS\context_rvds.S
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Comment: _reswitch used once
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pendsv_exit 00000074
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Symbol: pendsv_exit
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Definitions
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At line 141 in file ..\RTOS\context_rvds.S
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Uses
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At line 98 in file ..\RTOS\context_rvds.S
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Comment: pendsv_exit used once
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rt_hw_context_switch 0000000E
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Symbol: rt_hw_context_switch
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Definitions
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At line 60 in file ..\RTOS\context_rvds.S
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Uses
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At line 61 in file ..\RTOS\context_rvds.S
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Comment: rt_hw_context_switch used once
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rt_hw_context_switch_interrupt 0000000E
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Symbol: rt_hw_context_switch_interrupt
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Definitions
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At line 58 in file ..\RTOS\context_rvds.S
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Uses
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At line 59 in file ..\RTOS\context_rvds.S
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Comment: rt_hw_context_switch_interrupt used once
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rt_hw_context_switch_to 0000007E
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Symbol: rt_hw_context_switch_to
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ARM Macro Assembler Page 2 Alphabetic symbol ordering
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Relocatable symbols
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Definitions
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At line 155 in file ..\RTOS\context_rvds.S
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Uses
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At line 156 in file ..\RTOS\context_rvds.S
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Comment: rt_hw_context_switch_to used once
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rt_hw_interrupt_disable 00000000
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Symbol: rt_hw_interrupt_disable
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Definitions
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At line 37 in file ..\RTOS\context_rvds.S
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Uses
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At line 38 in file ..\RTOS\context_rvds.S
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Comment: rt_hw_interrupt_disable used once
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rt_hw_interrupt_enable 00000008
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Symbol: rt_hw_interrupt_enable
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Definitions
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At line 47 in file ..\RTOS\context_rvds.S
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Uses
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At line 48 in file ..\RTOS\context_rvds.S
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Comment: rt_hw_interrupt_enable used once
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rt_hw_interrupt_thread_switch 000000AA
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Symbol: rt_hw_interrupt_thread_switch
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Definitions
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At line 196 in file ..\RTOS\context_rvds.S
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Uses
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At line 197 in file ..\RTOS\context_rvds.S
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Comment: rt_hw_interrupt_thread_switch used once
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switch_to_thread 0000005A
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Symbol: switch_to_thread
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Definitions
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At line 123 in file ..\RTOS\context_rvds.S
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Uses
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At line 107 in file ..\RTOS\context_rvds.S
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Comment: switch_to_thread used once
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12 symbols
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ARM Macro Assembler Page 1 Alphabetic symbol ordering
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Absolute symbols
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NVIC_INT_CTRL E000ED04
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Symbol: NVIC_INT_CTRL
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Definitions
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At line 20 in file ..\RTOS\context_rvds.S
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Uses
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At line 78 in file ..\RTOS\context_rvds.S
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At line 179 in file ..\RTOS\context_rvds.S
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NVIC_PENDSVSET 10000000
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Symbol: NVIC_PENDSVSET
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Definitions
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At line 23 in file ..\RTOS\context_rvds.S
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Uses
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At line 79 in file ..\RTOS\context_rvds.S
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At line 180 in file ..\RTOS\context_rvds.S
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NVIC_PENDSV_PRI FFFF0000
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Symbol: NVIC_PENDSV_PRI
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Definitions
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At line 22 in file ..\RTOS\context_rvds.S
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Uses
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At line 173 in file ..\RTOS\context_rvds.S
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Comment: NVIC_PENDSV_PRI used once
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NVIC_SHPR3 E000ED20
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Symbol: NVIC_SHPR3
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Definitions
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At line 21 in file ..\RTOS\context_rvds.S
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Uses
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At line 172 in file ..\RTOS\context_rvds.S
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Comment: NVIC_SHPR3 used once
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SCB_VTOR E000ED08
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Symbol: SCB_VTOR
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Definitions
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At line 19 in file ..\RTOS\context_rvds.S
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Uses
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At line 184 in file ..\RTOS\context_rvds.S
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Comment: SCB_VTOR used once
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5 symbols
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ARM Macro Assembler Page 1 Alphabetic symbol ordering
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External symbols
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rt_hw_hard_fault_exception 00000000
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Symbol: rt_hw_hard_fault_exception
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Definitions
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At line 201 in file ..\RTOS\context_rvds.S
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Uses
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At line 209 in file ..\RTOS\context_rvds.S
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Comment: rt_hw_hard_fault_exception used once
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rt_interrupt_from_thread 00000000
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Symbol: rt_interrupt_from_thread
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Definitions
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At line 31 in file ..\RTOS\context_rvds.S
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Uses
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At line 71 in file ..\RTOS\context_rvds.S
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At line 104 in file ..\RTOS\context_rvds.S
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At line 162 in file ..\RTOS\context_rvds.S
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rt_interrupt_to_thread 00000000
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Symbol: rt_interrupt_to_thread
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Definitions
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At line 32 in file ..\RTOS\context_rvds.S
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Uses
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At line 75 in file ..\RTOS\context_rvds.S
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At line 124 in file ..\RTOS\context_rvds.S
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At line 158 in file ..\RTOS\context_rvds.S
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rt_thread_switch_interrupt_flag 00000000
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Symbol: rt_thread_switch_interrupt_flag
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Definitions
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At line 30 in file ..\RTOS\context_rvds.S
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Uses
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At line 64 in file ..\RTOS\context_rvds.S
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At line 95 in file ..\RTOS\context_rvds.S
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At line 167 in file ..\RTOS\context_rvds.S
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4 symbols
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356 symbols in table
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