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本帖最后由 TLLED 于 2018-12-4 21:37 编辑 《STM32库开发实战指南-基于STM32F103霸道》第15章--节启动文件详解的学习的理解+ z/ r; T2 w( Q& A5 O) i' _ - E J5 ?5 v! N4 l 一、书中错误地方 3 j- k2 v0 L; A& t$ s 3 g& l/ C! ^6 `+ J3 w 启动文件讲解---本是第15章节 
后面几页，页眉变成第16章节。书中有一个错别字。 
1 {2 T8 F6 C7 n N 二、启动文件的理解3 r' _ j! G2 k% X& e( V! n 启动文件是上电后，系统执行的第一个程序，由汇编程序编写，它主要做了以下工作。 1> 初始化堆栈指针 SP=_initial_sp 2> 初始化PC指针 PC=Reset_Handler3 n* }% K$ j: f! ]" b 3> 初始化中断向量表) r) J. V+ u) x. N {* V) U 4> 配置系统时钟 5> 调用C库函数_main初始化堆栈，最终调用main函数到C程序。* i" {2 n$ u3 \1 \, p, m! S 三、对程序的理解8 @3 H$ H$ m( n; v' I* l% J: f 程序代码：% l% g6 z; G# x) X8 Y3 m8 ^ ;******************** (C) COPYRIGHT 2011 STMicroelectronics ******************** ;* File Name : startup_stm32f10x_hd.s ;* Author : MCD Application Team ;* Version : V3.5.0 ;* Date : 11-March-2011 ;* Description : STM32F10x High Density Devices vector table for MDK-ARM ;* toolchain. ; G9 o K0 Q/ m; r) ~# I& ^" _ ;* This module performs:; a. S+ B/ ^* N9 V5 N ;* - Set the initial SP# M" D) l L6 p4 Y+ w6 K' A ;* - Set the initial PC == Reset_Handler ;* - Set the vector table entries with the exceptions ISR address! q3 e. D0 @6 S+ }8 N V ;* - Configure the clock system and also configure the external : A6 k5 f0 B5 n) b4 ]$ j+ S ;* SRAM mounted on STM3210E-EVAL board to be used as data 0 j3 s" f* C8 j4 z. Z4 e' s ;* memory (optional, to be enabled by user) ;* - Branches to __main in the C library (which eventually ;* calls main()).$ W! h0 P+ [ D2 ?6 L ;* After Reset the CortexM3 processor is in Thread mode, ;* priority is Privileged, and the Stack is set to Main.# \, h2 z$ M- W* o. L! `) T ;* <<< Use Configuration Wizard in Context Menu >>> ;*******************************************************************************: h" F$ H6 m/ T$ P ; THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS) n1 I0 B- K8 ]1 b# `9 W" R1 M3 ^ ; WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. T) Z7 b# Z* r4 V Y0 |" o0 y6 X ; AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,7 a3 X9 s6 ]/ [: s0 k( q ; INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE ; CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING ; INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. ;*******************************************************************************4 B) C5 y% v n8 } c ; [* D& ^# w1 q+ T ; Amount of memory (in bytes) allocated for Stack ; Tailor this value to your application needs) N; Q5 n: e1 Y" E4 g( P ; <h> Stack Configuration ; <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>9 C& [6 s$ A: A- r8 x# J0 A ; </h> Stack_Size EQU 0x00000400 4 J K n! {7 E0 s, L5 d AREA STACK, NOINIT, READWRITE, ALIGN=3/ t8 B; _% w* f" I$ S9 j( t Stack_Mem SPACE Stack_Size ;栈大小1KB，名称STACK，NOINT-不初始化 2^3=8字节对齐9 y- }3 I6 d9 W# x: @! `: V, C __initial_sp) q: B3 f8 m. f9 i4 Q$ z ; <h> Heap Configuration ; <o> Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>" P7 m2 `1 R) B% r) Z ; </h> Heap_Size EQU 0x000002009 ]4 J, u v7 P! w, p! R" b5 n& f AREA HEAP, NOINIT, READWRITE, ALIGN=3; t0 C& `& v* C V. ?/ \ __heap_base ;堆起始地址3 a- W4 ]7 ]. z+ ^ Heap_Mem SPACE Heap_Size ;堆大小512B- @: \: V8 h3 R1 G4 ?1 N __heap_limit ;堆结束地址 PRESERVE8 ;指定当前文件的堆栈按照8字节对齐0 h) y4 y8 ?1 O" }; D1 [3 e THUMB ;表示后面兼容THUNB指令集 ; Vector Table Mapped to Address 0 at Reset- L: V q+ K- S" ~! v& J AREA RESET, DATA, READONLY ;定义一个数据段名称为RESET，只读 EXPORT __Vectors ;声明全局变量__Vectors5 Z1 n- C$ @9 Y% c a EXPORT __Vectors_End ;声明全局变量__Vectors_End1 A5 K" D& R3 t$ v/ D3 @ T3 b$ q EXPORT __Vectors_Size ;声明全局变量__Vectors_Size ! X v8 w5 ?( M4 O5 F __Vectors DCD __initial_sp ; 栈顶地址 DCD Reset_Handler ; 复位处理程序8 A7 ` Y% o" M+ N DCD NMI_Handler ; 不可屏蔽中断处理 DCD HardFault_Handler ; Hard Fault 处理 DCD MemManage_Handler ; MPU Fault 处理- x' F4 e- x0 p) y* o DCD BusFault_Handler ; Bus Fault 处理 DCD UsageFault_Handler ; Usage Fault 处理$ q) m9 S# d) Z. F; u: j0 c1 L DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved2 K, D% C7 [+ B; M DCD 0 ; Reserved9 x" N& V( m/ _6 ` DCD SVC_Handler ; SVCall Handler7 K3 L' v! V( G& @& U* f, F DCD DebugMon_Handler ; Debug Monitor Handler DCD 0 ; Reserved DCD PendSV_Handler ; PendSV Handler' o3 U0 d/ P8 D$ v DCD SysTick_Handler ; SysTick 处理 4 I3 J( i! n7 J* k( t ; 外部中断开始 DCD WWDG_IRQHandler ; Window Watchdog DCD PVD_IRQHandler ; PVD through EXTI Line detect6 @* X7 G( X/ \8 s DCD TAMPER_IRQHandler ; Tamper& ^, H4 p" s: U, \; Z9 u DCD RTC_IRQHandler ; RTC n J8 T! ]1 M) H* a3 s S DCD FLASH_IRQHandler ; Flash$ \4 O+ N: y! N4 ^) k( Q. f, N DCD RCC_IRQHandler ; RCC, U$ V, | t3 n7 Y* I1 f- n" ? DCD EXTI0_IRQHandler ; EXTI Line 0& H u" f, |9 }1 {: }# U DCD EXTI1_IRQHandler ; EXTI Line 1; v' E. A" _! H0 V DCD EXTI2_IRQHandler ; EXTI Line 2) p$ l& ?' i; B DCD EXTI3_IRQHandler ; EXTI Line 3 DCD EXTI4_IRQHandler ; EXTI Line 4 DCD DMA1_Channel1_IRQHandler ; DMA1 Channel 1+ ^0 M& _1 ]# y J" M DCD DMA1_Channel2_IRQHandler ; DMA1 Channel 2 DCD DMA1_Channel3_IRQHandler ; DMA1 Channel 3 DCD DMA1_Channel4_IRQHandler ; DMA1 Channel 4 DCD DMA1_Channel5_IRQHandler ; DMA1 Channel 5 DCD DMA1_Channel6_IRQHandler ; DMA1 Channel 6 DCD DMA1_Channel7_IRQHandler ; DMA1 Channel 7 DCD ADC1_2_IRQHandler ; ADC1 & ADC2 DCD USB_HP_CAN1_TX_IRQHandler ; USB High Priority or CAN1 TX DCD USB_LP_CAN1_RX0_IRQHandler ; USB Low Priority or CAN1 RX0 DCD CAN1_RX1_IRQHandler ; CAN1 RX1+ A/ @5 K+ \4 v# y) p' D4 s DCD CAN1_SCE_IRQHandler ; CAN1 SCE DCD EXTI9_5_IRQHandler ; EXTI Line 9..5- N) @* Y$ Z. ?' ]3 ^; P. e) y' @8 J DCD TIM1_BRK_IRQHandler ; TIM1 Break DCD TIM1_UP_IRQHandler ; TIM1 Update DCD TIM1_TRG_COM_IRQHandler ; TIM1 Trigger and Commutation DCD TIM1_CC_IRQHandler ; TIM1 Capture Compare) r n+ Q5 v/ Y3 Z- Z' I# w DCD TIM2_IRQHandler ; TIM26 L4 w+ r* ]" S" o! h+ R) T DCD TIM3_IRQHandler ; TIM3 DCD TIM4_IRQHandler ; TIM4 DCD I2C1_EV_IRQHandler ; I2C1 Event& z6 M; c9 ~/ y& s+ z" B: u DCD I2C1_ER_IRQHandler ; I2C1 Error DCD I2C2_EV_IRQHandler ; I2C2 Event3 E0 q. l3 g! g2 p \! M, @ DCD I2C2_ER_IRQHandler ; I2C2 Error6 |% \9 z2 R, j5 ^7 u DCD SPI1_IRQHandler ; SPI10 o3 B! t. }* P9 }! Y Y( { DCD SPI2_IRQHandler ; SPI2 DCD USART1_IRQHandler ; USART11 e- b+ @0 E& _' M9 l DCD USART2_IRQHandler ; USART2$ h3 x$ b+ f' a2 e t3 T3 B DCD USART3_IRQHandler ; USART3 DCD EXTI15_10_IRQHandler ; EXTI Line 15..10% w H# b' I i4 i. i. [ DCD RTCAlarm_IRQHandler ; RTC Alarm through EXTI Line: T7 L* H- E7 F! i3 S; q0 p DCD USBWakeUp_IRQHandler ; USB Wakeup from suspend% H) b! V% L3 i" \) v& Y DCD TIM8_BRK_IRQHandler ; TIM8 Break) R t- m6 J+ D4 E* j: _' p4 J DCD TIM8_UP_IRQHandler ; TIM8 Update4 z; N8 w M0 n/ w* y DCD TIM8_TRG_COM_IRQHandler ; TIM8 Trigger and Commutation3 m* ~5 p* m; T) Z- w DCD TIM8_CC_IRQHandler ; TIM8 Capture Compare- S& t) X- e/ N/ N, c; X6 K DCD ADC3_IRQHandler ; ADC3 DCD FSMC_IRQHandler ; FSMC DCD SDIO_IRQHandler ; SDIO DCD TIM5_IRQHandler ; TIM54 A& I" C8 i% y; E DCD SPI3_IRQHandler ; SPI3, n0 b- d% ^3 N% k5 T" A% T DCD UART4_IRQHandler ; UART4 DCD UART5_IRQHandler ; UART5 DCD TIM6_IRQHandler ; TIM6 DCD TIM7_IRQHandler ; TIM7$ P6 L/ L* V9 e' Q! u DCD DMA2_Channel1_IRQHandler ; DMA2 Channel1 DCD DMA2_Channel2_IRQHandler ; DMA2 Channel2 DCD DMA2_Channel3_IRQHandler ; DMA2 Channel3 DCD DMA2_Channel4_5_IRQHandler ; DMA2 Channel4 & Channel5 __Vectors_End1 }( W2 T' P6 a+ H4 e ;向量表从FLASH的0地址开始放置，以4个字节为一个单位，地址0存放的是栈顶地址，0x04存放的是复位程序地址，以此类推。5 J6 [ x) G% z& n9 f7 Z( d ;DCD - 分配一个或多个以字为单位的内存，以4字节对齐，并要求初始化这些内存。 __Vectors_Size EQU __Vectors_End - __Vectors //向量表大小. ~: B) Z5 X4 L- O AREA |.text|, CODE, READONLY ;定义一个.text名称的代码段，只读4 A. W* u& c5 \ ; 复位处理6 Z* s: h, _5 ?8 ]3 N Reset_Handler PROC ; PROC-定义子程序与ENDP成对使用. f$ @: W; M& m9 K# E8 S EXPORT Reset_Handler [WEAK] ;声明Reset_Handler，可被外部使用的全局属性 IMPORT __main ;声明外部文件 IMPORT SystemInit ;声明外部文件，类似于C语言的extern外部声明" t3 @( }) a; @0 R LDR R0, =SystemInit BLX R0 ;跳转到SystemInit地址执行# `* C X, e2 Z( c LDR R0, =__main BX R0 ;跳转到__main地址执行2 q( Z# B% z* x# v% c ENDP ;子程序结束8 ]0 O' Z" a+ [5 a % w+ d! h! m" Q" o6 j5 K/ | ; Dummy Exception Handlers (infinite loops which can be modified)- v. `) |+ C% i& C* T) I 0 u9 ]* W% A, {; d( c NMI_Handler PROC ;异常处理 EXPORT NMI_Handler [WEAK] B . ;无限循环# i" L% z* }8 c) B- ^# i6 j2 q: v ENDP7 v I2 M$ t0 Q8 d HardFault_Handler\ PROC EXPORT HardFault_Handler [WEAK] B .) r$ n J5 ]1 g. ^8 H9 z ENDP MemManage_Handler\" E) E2 r7 G$ A PROC EXPORT MemManage_Handler [WEAK] B . ENDP* C; M7 @* v3 g: b9 I% K' v BusFault_Handler\7 C e! V/ K" r PROC EXPORT BusFault_Handler [WEAK]* K1 n8 G, [! b) M( B, Y* X6 _2 m B . ENDP* Y4 m& K& `" L- G E1 c) r0 w UsageFault_Handler\ PROC5 p# o9 \ ?; T0 g EXPORT UsageFault_Handler [WEAK]8 t7 y$ U8 s% d$ Z B .$ y G% n8 j0 d0 I3 R: `0 F ENDP) }: T1 f, S) Z: s% @5 X' m SVC_Handler PROC* Z- e- a' G% z& L8 s1 X EXPORT SVC_Handler [WEAK] B . ENDP, ]2 j, \" M( V+ o* F DebugMon_Handler\ PROC EXPORT DebugMon_Handler [WEAK]8 K% Y f \7 `- G" T5 N& G B . ENDP PendSV_Handler PROC EXPORT PendSV_Handler [WEAK]" U6 Z$ D: z5 s9 y y B . ENDP, w' [# D: A$ G, Z# D SysTick_Handler PROC EXPORT SysTick_Handler [WEAK] B . ENDP 2 c* H- Q0 P0 ?: h: z4 y4 ~ Default_Handler PROC6 g8 ?6 s4 {- m) ]$ w5 q EXPORT WWDG_IRQHandler [WEAK]$ V2 I% K. _5 m3 d! Q4 T' c7 ]6 K EXPORT PVD_IRQHandler [WEAK]9 \1 O& `4 g7 n7 {5 F3 Y EXPORT TAMPER_IRQHandler [WEAK] g, u/ }: ^: J EXPORT RTC_IRQHandler [WEAK]4 g' _( b9 M- d EXPORT FLASH_IRQHandler [WEAK] EXPORT RCC_IRQHandler [WEAK]9 i; L4 [. {: D5 m7 | EXPORT EXTI0_IRQHandler [WEAK] EXPORT EXTI1_IRQHandler [WEAK]* I; r" I$ ^2 N3 f/ r EXPORT EXTI2_IRQHandler [WEAK] EXPORT EXTI3_IRQHandler [WEAK]; j3 u* N8 R. }' e5 _4 A i s EXPORT EXTI4_IRQHandler [WEAK] EXPORT DMA1_Channel1_IRQHandler [WEAK] }; ?% ^: F8 `/ v0 Q9 W, C j$ E EXPORT DMA1_Channel2_IRQHandler [WEAK] EXPORT DMA1_Channel3_IRQHandler [WEAK]1 Q. @& L$ Q" t6 T EXPORT DMA1_Channel4_IRQHandler [WEAK] EXPORT DMA1_Channel5_IRQHandler [WEAK], X) Q$ A7 h( V, A3 W7 i$ _ EXPORT DMA1_Channel6_IRQHandler [WEAK]6 N" C+ y3 O6 p; a+ D# }+ ? EXPORT DMA1_Channel7_IRQHandler [WEAK]* @ h% x% {( `$ U! y EXPORT ADC1_2_IRQHandler [WEAK] EXPORT USB_HP_CAN1_TX_IRQHandler [WEAK]3 g+ ^7 J o+ n9 E9 n EXPORT USB_LP_CAN1_RX0_IRQHandler [WEAK], d( B' h1 s' f4 d EXPORT CAN1_RX1_IRQHandler [WEAK]" \8 _9 {) B+ \" L/ o$ `( K EXPORT CAN1_SCE_IRQHandler [WEAK]1 R I/ w; A- P$ i. R' K EXPORT EXTI9_5_IRQHandler [WEAK] EXPORT TIM1_BRK_IRQHandler [WEAK]2 Y- Z; U+ G& n9 g5 O' f* \ EXPORT TIM1_UP_IRQHandler [WEAK]+ Y0 c6 ~: H8 L: ^( h. ^3 m EXPORT TIM1_TRG_COM_IRQHandler [WEAK] h6 ^- Z, |! c* E EXPORT TIM1_CC_IRQHandler [WEAK]1 H/ Z7 F* ~9 ~% V( ? EXPORT TIM2_IRQHandler [WEAK] EXPORT TIM3_IRQHandler [WEAK]! `) a* _1 w6 j- O! w EXPORT TIM4_IRQHandler [WEAK]8 m) l8 }) c5 @6 p EXPORT I2C1_EV_IRQHandler [WEAK] EXPORT I2C1_ER_IRQHandler [WEAK] EXPORT I2C2_EV_IRQHandler [WEAK] EXPORT I2C2_ER_IRQHandler [WEAK]" h; i" z4 R4 \! F EXPORT SPI1_IRQHandler [WEAK]; [, u- ?4 V" D S EXPORT SPI2_IRQHandler [WEAK]3 w; H) o3 n$ ]6 W EXPORT USART1_IRQHandler [WEAK] EXPORT USART2_IRQHandler [WEAK]3 M$ L$ c/ |# L' } e# e& U EXPORT USART3_IRQHandler [WEAK]+ d5 e7 c: w6 I. x3 H7 `5 X EXPORT EXTI15_10_IRQHandler [WEAK]+ |8 g; O! Z& o" {/ |% k EXPORT RTCAlarm_IRQHandler [WEAK]5 w+ Y) ?( n2 j! t EXPORT USBWakeUp_IRQHandler [WEAK]/ U6 n+ e4 A4 @9 s9 r EXPORT TIM8_BRK_IRQHandler [WEAK] EXPORT TIM8_UP_IRQHandler [WEAK]6 m# }5 f0 J: I, Z EXPORT TIM8_TRG_COM_IRQHandler [WEAK] EXPORT TIM8_CC_IRQHandler [WEAK] EXPORT ADC3_IRQHandler [WEAK]: g( y7 O5 @: p7 S3 C2 K EXPORT FSMC_IRQHandler [WEAK] EXPORT SDIO_IRQHandler [WEAK]/ _3 m5 w# b( r- d EXPORT TIM5_IRQHandler [WEAK]; ]2 y6 h. {7 W2 V EXPORT SPI3_IRQHandler [WEAK] EXPORT UART4_IRQHandler [WEAK] EXPORT UART5_IRQHandler [WEAK]! e6 B+ S+ ?9 [1 b5 ]' u1 E+ q EXPORT TIM6_IRQHandler [WEAK] EXPORT TIM7_IRQHandler [WEAK]) d7 M1 R6 ~5 k5 m! [. e( c EXPORT DMA2_Channel1_IRQHandler [WEAK] EXPORT DMA2_Channel2_IRQHandler [WEAK] EXPORT DMA2_Channel3_IRQHandler [WEAK]5 Y8 Q$ @. h& @ d3 I( G7 Q EXPORT DMA2_Channel4_5_IRQHandler [WEAK]$ Y% `& b) o3 L4 i; l& M ; B" C1 ?+ v4 w# A7 U" _$ U WWDG_IRQHandler% p- l! a0 N- ]) g" u7 L PVD_IRQHandler TAMPER_IRQHandler6 e; P$ T/ W* @1 |, | RTC_IRQHandler O5 k* c% s1 r. Z FLASH_IRQHandler RCC_IRQHandler EXTI0_IRQHandler EXTI1_IRQHandler' X5 `- C! i8 s+ F2 N7 | EXTI2_IRQHandler EXTI3_IRQHandler" M( `9 Y: T: E4 r( t& ] EXTI4_IRQHandler3 c' ~: p0 A% K0 X5 W4 u J DMA1_Channel1_IRQHandler/ n, t1 l( p$ y- f DMA1_Channel2_IRQHandler/ ~: D4 B# ?, A5 p/ H3 S DMA1_Channel3_IRQHandler DMA1_Channel4_IRQHandler% _- {& ~. l1 U1 K DMA1_Channel5_IRQHandler* o2 @2 W8 U4 l9 ?, `9 v DMA1_Channel6_IRQHandler DMA1_Channel7_IRQHandler6 f6 {- P( ^/ ?9 ` ADC1_2_IRQHandler& ]1 u7 B) F$ l, k! S B USB_HP_CAN1_TX_IRQHandler; `6 d t' X/ a$ F USB_LP_CAN1_RX0_IRQHandler CAN1_RX1_IRQHandler) y6 H/ C5 d3 K6 g2 i CAN1_SCE_IRQHandler EXTI9_5_IRQHandler TIM1_BRK_IRQHandler# ?8 v& A4 E. F9 A: ` TIM1_UP_IRQHandler TIM1_TRG_COM_IRQHandler* Y' V" T9 ?" ` TIM1_CC_IRQHandler TIM2_IRQHandler TIM3_IRQHandler3 r8 M5 _( o1 N: O/ G+ u% N7 L# ? TIM4_IRQHandler9 i& T9 {( b6 o- n3 b I2C1_EV_IRQHandler I2C1_ER_IRQHandler I2C2_EV_IRQHandler I2C2_ER_IRQHandler SPI1_IRQHandler m$ i# [$ [: B& Z# r9 ?. V SPI2_IRQHandler USART1_IRQHandler USART2_IRQHandler USART3_IRQHandler EXTI15_10_IRQHandler RTCAlarm_IRQHandler USBWakeUp_IRQHandler, v' [: ?1 B O- k& z u' w0 P TIM8_BRK_IRQHandler TIM8_UP_IRQHandler6 E4 B' c0 i: R TIM8_TRG_COM_IRQHandler TIM8_CC_IRQHandler ADC3_IRQHandler FSMC_IRQHandler) l: y* C4 h2 D- k7 K& _ SDIO_IRQHandler TIM5_IRQHandler8 b6 o3 E G% `4 e2 o6 ~ SPI3_IRQHandler UART4_IRQHandler UART5_IRQHandler) e. q# o7 N7 e; [' Y5 t TIM6_IRQHandler! i. ^5 u& c6 f/ t TIM7_IRQHandler$ V( U f3 D" P$ D DMA2_Channel1_IRQHandler DMA2_Channel2_IRQHandler0 @0 e0 j: b# l; A& y DMA2_Channel3_IRQHandler DMA2_Channel4_5_IRQHandler9 ^- u; y ^: V6 j- ]/ r1 | B . ( p6 V8 l( R& Y) o ENDP$ u; j- | P' o6 [; U ALIGN ;对指令或者数据存放的地址进行对齐，后面会跟一个立即书，缺省表示4个字节& T) Y4 c; P. `5 V5 ^ ;******************************************************************************* ; User Stack and Heap initialization ;*******************************************************************************# C7 c6 `3 q$ a3 \+ E IF : DEF:__MICROLIB ;这个宏在Keil里面开启 6 }$ t2 X& z+ w6 u EXPORT __initial_sp ;声明标号 EXPORT __heap_base ;声明标号，栈起始地址" H% N* m" a, P2 p1 _; H. g% r EXPORT __heap_limit ;声明标号，栈结束地址- D4 I# b8 I7 ^6 T: n$ A8 d& } ELSE 6 o9 g. U u, v1 q; U R$ \6 v: ? IMPORT __use_two_region_memory ;这个函数由用户自己实现% N w) L4 q- ?8 }2 Q$ K8 M EXPORT __user_initial_stackheap) o5 H/ z3 q' P0 T8 @' @& B+ O: F U# _8 |# x; }/ z __user_initial_stackheap ' F6 Y! L" R' |/ M L; E6 H0 ^ LDR R0, = Heap_Mem LDR R1, =(Stack_Mem + Stack_Size)2 l- g/ C A |+ M, w LDR R2, = (Heap_Mem + Heap_Size)9 U8 R4 {5 D7 G/ ] LDR R3, = Stack_Mem BX LR. I' J% R: E9 N/ \ j! _9 C ALIGN $ s+ q# i7 h: T% e2 M5 E ENDIF END ; i2 O: R/ u* i& P5 D ;******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE***** 0 Z0 a/ ~2 A8 K 以上是通过本章节学习的一点理解，还有不足之处，后续再深入学习。- S' r- j7 L: }- W0 @$ ~ , _9 ?, ~2 ]/ U3 m9 r+ x' } " p# `( I7 C4 d9 B+ z6 H, D : ~: n% u( a$ h6 o* N - C" V# x2 s* H# p& B |
STMCU-管管
回答时间：2018-12-6 14:33:31
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