📄 start.s
字号:
///////////////////////////////////////////////////////////////////////////////
// /
// IAR ANSI C/C++ Compiler V6.40.1.53790/W32 for ARM 09/Aug/2012 10:07:31 /
// Copyright 1999-2012 IAR Systems AB. /
// /
// Cpu mode = thumb /
// Endian = little /
// Source file = C:\Users\305030973\Desktop\M4 /
// example\01_light\src\Project_Settings\Startup_Code\star /
// t.c /
// Command line = "C:\Users\305030973\Desktop\M4 /
// example\01_light\src\Project_Settings\Startup_Code\star /
// t.c" -D IAR -D TWR_K60N512 -lCN /
// "C:\Users\305030973\Desktop\M4 /
// example\01_light\bin\Flash\List\" -lB /
// "C:\Users\305030973\Desktop\M4 /
// example\01_light\bin\Flash\List\" -o /
// "C:\Users\305030973\Desktop\M4 /
// example\01_light\bin\Flash\Obj\" --no_cse --no_unroll /
// --no_inline --no_code_motion --no_tbaa --no_clustering /
// --no_scheduling --debug --endian=little /
// --cpu=Cortex-M4 -e --fpu=None --dlib_config /
// "C:\Program Files\IAR Systems\Embedded Workbench /
// 6.4_2\arm\INC\c\DLib_Config_Normal.h" -I /
// "C:\Users\305030973\Desktop\M4 /
// example\01_light\src\Sources\H\" -I /
// "C:\Users\305030973\Desktop\M4 /
// example\01_light\src\Sources\H\Component_H\" -I /
// "C:\Users\305030973\Desktop\M4 /
// example\01_light\src\Sources\H\Frame_H\" -I /
// "C:\Program Files\IAR Systems\Embedded Workbench /
// 6.4_2\arm\INC\" -I "C:\Program Files\IAR /
// Systems\Embedded Workbench 6.4_2\arm\INC\CLIB\" -Ol /
// --use_c++_inline /
// List file = C:\Users\305030973\Desktop\M4 /
// example\01_light\bin\Flash\List\start.s /
// /
// /
///////////////////////////////////////////////////////////////////////////////
NAME start
#define SHT_PROGBITS 0x1
SECTION `.bss`:DATA:REORDER:NOROOT(0)
SECTION_TYPE SHT_PROGBITS, 0
SECTION `.data`:DATA:REORDER:NOROOT(0)
SECTION_TYPE SHT_PROGBITS, 0
SECTION `.data_init`:DATA:REORDER:NOROOT(0)
SECTION_TYPE SHT_PROGBITS, 0
SECTION CodeRelocate:DATA:REORDER:NOROOT(0)
SECTION_TYPE SHT_PROGBITS, 0
SECTION CodeRelocateRam:DATA:REORDER:NOROOT(0)
SECTION_TYPE SHT_PROGBITS, 0
EXTERN __VECTOR_RAM
EXTERN __VECTOR_TABLE
EXTERN main
EXTERN sysinit
EXTERN wdog_disable
EXTERN write_vtor
PUBLIC common_startup
PUBLIC start
// C:\Users\305030973\Desktop\M4 example\01_light\src\Project_Settings\Startup_Code\start.c
// 1 //-------------------------------------------------------------------------*
// 2 // 文件名:start.c *
// 3 // 说 明: CPU启动后进行系统配置 *
// 4 //-------------------------------------------------------------------------*
// 5
// 6 //头文件
// 7 #include "common.h"
// 8 #include "wdog.h"
// 9 #include "sysinit.h"
// 10
// 11 #pragma section = ".data"
// 12 #pragma section = ".data_init"
// 13 #pragma section = ".bss"
// 14 #pragma section = "CodeRelocate"
// 15 #pragma section = "CodeRelocateRam"
// 16
// 17 //内部函数声明
// 18 //-------------------------------------------------------------------------*
// 19 //函数名: common_startup *
// 20 //功 能: 复制中断向量表到RAM中 *
// 21 //参 数: 无 *
// 22 //说 明: 将ROM中的初始化数据拷贝到RAM中 *
// 23 //-------------------------------------------------------------------------*
// 24 void common_startup(void);
// 25
// 26 //-------------------------------------------------------------------------*
// 27 //函数名: start *
// 28 //功 能: 系统启动 *
// 29 //参 数: 无 *
// 30 //说 明: 无 *
// 31 //-------------------------------------------------------------------------*
SECTION `.text`:CODE:NOROOT(1)
THUMB
// 32 void start(void)
// 33 {
start:
PUSH {R7,LR}
// 34 //关闭看门狗
// 35 wdog_disable();
BL wdog_disable
// 36 //复制中断向量表到RAM中
// 37 common_startup();
BL common_startup
// 38 //系统设置
// 39 sysinit();
BL sysinit
// 40 //进入主函数
// 41 main();
BL main
// 42 }
POP {R0,PC} ;; return
// 43
// 44
// 45 //-------------------------------------------------------------------------*
// 46 //函数名: common_startup *
// 47 //功 能: 复制中断向量表到RAM中 *
// 48 //参 数: 无 *
// 49 //说 明: 将ROM中的初始化数据拷贝到RAM中 *
// 50 //-------------------------------------------------------------------------*
SECTION `.text`:CODE:NOROOT(1)
THUMB
// 51 void common_startup(void)
// 52 {
common_startup:
PUSH {R7,LR}
// 53 /* Declare a counter we'll use in all of the copy loops */
// 54 uint32 n;
// 55
// 56
// 57 /* Addresses for VECTOR_TABLE and VECTOR_RAM come from the linker file */
// 58 extern uint32 __VECTOR_TABLE[];
// 59 extern uint32 __VECTOR_RAM[];
// 60
// 61 /* Copy the vector table to RAM */
// 62 if (__VECTOR_RAM != __VECTOR_TABLE)
LDR.N R0,??DataTable0
LDR.N R1,??DataTable0_1
CMP R0,R1
BEQ.N ??common_startup_0
// 63 {
// 64 for (n = 0; n < 0x410; n++)
MOVS R0,#+0
B.N ??common_startup_1
// 65 __VECTOR_RAM[n] = __VECTOR_TABLE[n];
??common_startup_2:
LDR.N R1,??DataTable0
LDR.N R2,??DataTable0_1
LDR R2,[R2, R0, LSL #+2]
STR R2,[R1, R0, LSL #+2]
ADDS R0,R0,#+1
??common_startup_1:
CMP R0,#+1040
BCC.N ??common_startup_2
// 66 }
// 67 /* Point the VTOR to the new copy of the vector table */
// 68 write_vtor((uint32)__VECTOR_RAM);
??common_startup_0:
LDR.N R0,??DataTable0
BL write_vtor
// 69
// 70 /* Get the addresses for the .data section (initialized data section) */
// 71 uint8* data_ram = __section_begin(".data");
LDR.N R1,??DataTable0_2
// 72 uint8* data_rom = __section_begin(".data_init");
LDR.N R2,??DataTable0_3
// 73 uint8* data_rom_end = __section_end(".data_init");
LDR.N R0,??DataTable0_4
// 74
// 75 /* Copy initialized data from ROM to RAM */
// 76 n = data_rom_end - data_rom;
SUBS R0,R0,R2
B.N ??common_startup_3
// 77 while (n--)
// 78 *data_ram++ = *data_rom++;
??common_startup_4:
LDRB R3,[R2, #+0]
STRB R3,[R1, #+0]
ADDS R2,R2,#+1
ADDS R1,R1,#+1
??common_startup_3:
MOVS R3,R0
SUBS R0,R3,#+1
CMP R3,#+0
BNE.N ??common_startup_4
// 79
// 80
// 81 /* Get the addresses for the .bss section (zero-initialized data) */
// 82 uint8* bss_start = __section_begin(".bss");
LDR.N R1,??DataTable0_5
// 83 uint8* bss_end = __section_end(".bss");
LDR.N R0,??DataTable0_6
// 84
// 85 /* Clear the zero-initialized data section */
// 86 n = bss_end - bss_start;
SUBS R0,R0,R1
B.N ??common_startup_5
// 87 while(n--)
// 88 *bss_start++ = 0;
??common_startup_6:
MOVS R2,#+0
STRB R2,[R1, #+0]
ADDS R1,R1,#+1
??common_startup_5:
MOVS R2,R0
SUBS R0,R2,#+1
CMP R2,#+0
BNE.N ??common_startup_6
// 89
// 90 /* Get addresses for any code sections that need to be copied from ROM to RAM.
// 91 * The IAR tools have a predefined keyword that can be used to mark individual
// 92 * functions for execution from RAM. Add "__ramfunc" before the return type in
// 93 * the function prototype for any routines you need to execute from RAM instead
// 94 * of ROM. ex: __ramfunc void foo(void);
// 95 */
// 96 uint8* code_relocate_ram = __section_begin("CodeRelocateRam");
LDR.N R1,??DataTable0_7
// 97 uint8* code_relocate = __section_begin("CodeRelocate");
LDR.N R2,??DataTable0_8
// 98 uint8* code_relocate_end = __section_end("CodeRelocate");
LDR.N R0,??DataTable0_9
// 99
// 100 /* Copy functions from ROM to RAM */
// 101 n = code_relocate_end - code_relocate;
SUBS R0,R0,R2
B.N ??common_startup_7
// 102 while (n--)
// 103 *code_relocate_ram++ = *code_relocate++;
??common_startup_8:
LDRB R3,[R2, #+0]
STRB R3,[R1, #+0]
ADDS R2,R2,#+1
ADDS R1,R1,#+1
??common_startup_7:
MOVS R3,R0
SUBS R0,R3,#+1
CMP R3,#+0
BNE.N ??common_startup_8
// 104 }
POP {R0,PC} ;; return
SECTION `.text`:CODE:NOROOT(2)
SECTION_TYPE SHT_PROGBITS, 0
DATA
??DataTable0:
DC32 __VECTOR_RAM
SECTION `.text`:CODE:NOROOT(2)
SECTION_TYPE SHT_PROGBITS, 0
DATA
??DataTable0_1:
DC32 __VECTOR_TABLE
SECTION `.text`:CODE:NOROOT(2)
SECTION_TYPE SHT_PROGBITS, 0
DATA
??DataTable0_2:
DC32 SFB(`.data`)
SECTION `.text`:CODE:NOROOT(2)
SECTION_TYPE SHT_PROGBITS, 0
DATA
??DataTable0_3:
DC32 SFB(`.data_init`)
SECTION `.text`:CODE:NOROOT(2)
SECTION_TYPE SHT_PROGBITS, 0
DATA
??DataTable0_4:
DC32 SFE(`.data_init`)
SECTION `.text`:CODE:NOROOT(2)
SECTION_TYPE SHT_PROGBITS, 0
DATA
??DataTable0_5:
DC32 SFB(`.bss`)
SECTION `.text`:CODE:NOROOT(2)
SECTION_TYPE SHT_PROGBITS, 0
DATA
??DataTable0_6:
DC32 SFE(`.bss`)
SECTION `.text`:CODE:NOROOT(2)
SECTION_TYPE SHT_PROGBITS, 0
DATA
??DataTable0_7:
DC32 SFB(CodeRelocateRam)
SECTION `.text`:CODE:NOROOT(2)
SECTION_TYPE SHT_PROGBITS, 0
DATA
??DataTable0_8:
DC32 SFB(CodeRelocate)
SECTION `.text`:CODE:NOROOT(2)
SECTION_TYPE SHT_PROGBITS, 0
DATA
??DataTable0_9:
DC32 SFE(CodeRelocate)
SECTION `.iar_vfe_header`:DATA:REORDER:NOALLOC:NOROOT(2)
SECTION_TYPE SHT_PROGBITS, 0
DATA
DC32 0
SECTION `.bss`:DATA:REORDER:NOROOT(0)
SECTION_TYPE SHT_PROGBITS, 0
SECTION `.data`:DATA:REORDER:NOROOT(0)
SECTION_TYPE SHT_PROGBITS, 0
SECTION `.data_init`:DATA:REORDER:NOROOT(0)
SECTION_TYPE SHT_PROGBITS, 0
SECTION CodeRelocate:DATA:REORDER:NOROOT(0)
SECTION_TYPE SHT_PROGBITS, 0
SECTION CodeRelocateRam:DATA:REORDER:NOROOT(0)
SECTION_TYPE SHT_PROGBITS, 0
SECTION __DLIB_PERTHREAD:DATA:REORDER:NOROOT(0)
SECTION_TYPE SHT_PROGBITS, 0
SECTION __DLIB_PERTHREAD_init:DATA:REORDER:NOROOT(0)
SECTION_TYPE SHT_PROGBITS, 0
END
//
// 176 bytes in section .text
//
// 176 bytes of CODE memory
//
//Errors: none
//Warnings: none
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -