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Questions:如何在Eclipse中实现分散加载?. S2 V0 v+ x" h9 w: r
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Answer:
, z- j$ [$ U9 T3 y3 j9 B修改脚本链接文件可以将某些函数和数据编排到特定的区域内。8 y' _) s. J1 `2 H- Z7 @" u* y
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1. 链接脚本文件一般是放在根目录下的ldscripts文件夹内,后缀为.ld。添加脚本链接文件的方法是“Project -> Properties -> C/C++ Build -> Setting -> Tool Settings -> “GNU ARM Cross C Linker” -> “General” -> 添加脚本链接文件。 , x# p; o# R I2 Y! w0 ~
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2 } i: n& s( v: q' Z+ h2. 修改脚本链接文件将某些函数和数据编排到特定的区域内,脚本链接文件可以使用记事本打开。以AT32F413xC(FLASH=256K,SRAM=32K)为例,其划分区块默认如下:$ T2 G0 ^7 O' O$ C( q' N/ G
/* Specify the memory areas */
# ~* E6 Q) o* x' n, s5 EMEMORY
( V! ^/ `6 S' `9 z{. d) A" M8 Z5 \& R; ^" [# f
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 256K
; w9 _4 o0 d2 X' P0 `5 s+ W1 A& SRAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
: K w& ~* {* {}
0 r! X8 s% V; i' Z- F! S% W; b8 V- B
r代表read-only,x代表可执行代码,w代表read/write,ORIGIN是该区块的起始地址,LENGTH是该区块的大小。) H3 [, @0 Q5 R) t: U
如果需要将某些函数和数据编排到特定的FLASH区域内,则可以将FLASH划分为几个区域,以下是将FLASH划分为3个区域,可以将函数和数据编排到任意一个区域内。
1 p% r( y4 Z/ v$ Z: A2 a# v/* Specify the memory areas */
& P6 k" |, {' |2 w, YMEMORY! ]2 L. w, n! ]/ ?
{
@! G/ j9 d% K" P9 O$ w( U6 bFLASH_1 (rx) : ORIGIN = 0x08000000, LENGTH = 128K
7 }/ A8 _1 A, J, v" i5 J* gFLASH_2 (rx) : ORIGIN = 0x08020000, LENGTH = 64K
9 t$ H) x5 u2 V& a ^, A- ]2 Q& uFLASH_3 (rx) : ORIGIN = 0x08030000, LENGTH = 64K7 |0 y% `3 J5 k- `, L/ d) \
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
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- Y' s* A: h, d8 N6 u比如需要把算法文件algorithm_1.c和algorithm_2.c内的函数和数据编排到FLASH_2区域内;把算法文件algorithm_3.c和algorithm_4.c内的函数和数据编排到FLASH_3区域内。则需要在SECTIONS添加设置,如下红色部分。完整的脚本链接文件请参考附录1。
) ?, I: {- x5 Z" I* |/* Define output sections */6 T8 _4 U. H( I
SECTIONS1 K+ O- l2 F% d1 N, M
{! [' T" e- z1 B+ j9 M o2 j! n
/* The startup code goes first into FLASH */
( n# b0 L, q, z- ]# m .isr_vector :
* j2 I2 ?% g9 P. m t$ o" z {1 {# t8 E; \" o6 `: Q9 q" o e4 i
. = ALIGN(4);
# [( Y g& V1 ~) L% b2 L7 A KEEP(*(.isr_vector)) /* Startup code */
i7 _5 H% E7 `* `# B+ l( M . = ALIGN(4);
$ H+ u8 O9 a. Z/ W" L } >FLASH_1& x1 D" s4 x) t$ X; V4 q5 |, u
( B2 b& }+ i4 d- P, u( v: O) f .algorithm_code1 :0 h5 E# { n! B& g. r2 h
{+ H& e8 q0 t5 `; Y; _( c3 I- o
. = ALIGN(4);
$ p1 o5 j; q' T: i! v. Y: Y9 d- a# i *algorithm_1.o (.text .text*);' c0 L: B2 J0 y3 E9 Y4 v
*algorithm_2.o (.text .text*);
- j# ?! j5 v3 D! e4 B ] . = ALIGN(4);# J8 G* T6 M( N! l7 s& s
} > FLASH_2
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.algorithm_code2 :
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" P1 r. M- P% a3 B. t . = ALIGN(4);
b% r+ i% [6 J$ { *algorithm_3.o (.text .text*);
) C9 q. u( ]1 y& u+ `8 ^9 x *algorithm_4.o (.text .text*);/ _6 H& X' e3 y
. = ALIGN(4);0 ^% z! }7 Z9 b% Q
} > FLASH_3- B( j$ r6 X: F' _' I& o; x L9 o; a
/ ]$ v- y: }" X" s% E /* The program code and other data goes into FLASH */6 l8 U' P& O; r
.text :
# T+ F. D+ b. o {
4 s7 Z3 K9 c( \' O8 ~9 {* L . = ALIGN(4);
9 `' C8 r9 p3 g* y/ N) Y. e7 t *(.text) /* .text sections (code) */
% V+ Q! ]' c' q *(.text*) /* .text* sections (code) */& H* r/ O; r0 B3 t q+ N
*(EXCLUDE_FILE (*algorithm_1.o * algorithm_2.o) .text .text*) . N: C4 Q$ U) W; k" J$ l
*(EXCLUDE_FILE (*algorithm_3.o * algorithm_4.o) .text .text*) 0 m9 H0 U/ Z- j W' n. e) q
*(.glue_7) /* glue arm to thumb code */( x c E% ^9 U9 `
*(.glue_7t) /* glue thumb to arm code *// m+ [$ `# f- L n* o
*(.eh_frame). g8 I9 w3 a8 @8 E k
KEEP (*(.init)): z- @# i8 Q7 h& v; d2 z
KEEP (*(.fini))2 J/ y. o8 ]8 [/ f2 i
. = ALIGN(4);
# G% G5 L3 c5 ^4 J _etext = .; /* define a global symbols at end of code */+ }* H F) W) k- C& J4 K3 J
} >FLASH_1 J/ T+ A. C3 C( K2 N! M
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1) .algorithm_code1和.algorithm_code2是自行命名的 section 名称,用户在实际编写时可以自定义名称。 { } 包含的 .o 文件就是要放进section 内的代码,{ } 末尾的 > FLASH_2 就是将 .algorithm_code1 这个 section 指定到先前定义的 FLASH_2 区块。例如algorithm_1.o、algorithm_2.o就是 algorithm_1.c 、algorithm_2.c这两个 c 代码文档编译后的 object code, 写在这个c 文档里的函数和数据,就全部会被编排到此section 内。假设有10个函数,那 10 个函数就都会被放进来。: Z# G1 j) N' R: x
注意:
5 l& n/ y$ U% s0 m( `1) .o 文件名前面都要加 * 号, 代表要将这个文件中的全部代码和数据都编排进来;3 z; [8 m! n7 S/ r) P
2) .text 和 .text* 是可执行的代码;
- M* o- i$ ^3 e2 e3) section 名称后的冒号与section 名称之间要加空格,如:.algorithm_ code1 :。
6 o$ X+ a5 s8 v7 D' {3 W; ?9 v2) 将.text{ } section指定到FLASH_1 区块。一定要加入 EXECLUDE_FILE这个命令,使用 EXCLUDE_FILE标示的代码就不会被编排到FLASH_1,不然前面第1)点所作的设置就会失效。此区段内的*(.text)和 *(.text*), 就是告诉 linker 将EXCLUDE_FILE标示以外的代码都放到 .text 这个 section 内。
8 m+ T9 r; ?: l' W3. 对于AT32F403/AT32F413/AT32F403A/AT32F407等FLASH有零等待和非零等待的mcu,如果需要将某些函数和数据编排到零等待或者非零等待域内,则可以将FLASH划分为2个区域,如下是以AT32F413xC(FLASH=256K,SRAM=32K)为例,可以将函数和数据编排到任意一个区域内。
, G: e5 @* J; x6 z' J( A/* Specify the memory areas */
: n- ^8 l/ w! f2 ~2 p0 GMEMORY$ T% S V$ _: h" A/ T+ C O
{
% K- P8 u u& x5 w/ m. b* c: v3 eFLASH_ZW (rx) : ORIGIN = 0x08000000, LENGTH = 96K: b0 r3 C. Q5 Z6 P
FLASH_NZW (rx) : ORIGIN = 0x08018000, LENGTH = 160K4 \5 j0 g- b5 |
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
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比如需要把对速率要求高的代码放到零等待,那么就可以将对速率要求不高的代码放到非零等待,留出零等待区存放对速率要求高的代码。比如将nzw_1.c和nzw_2.c内的函数和数据编排到FLASH_NZW区域内,则需要在SECTIONS添加设置,如下红色部分。完整的脚本链接文件请参考附录2。
2 P& m& y. e6 N3 b$ ^0 [/* Define output sections */* Z2 Y; k, q2 l h& q( Q9 d% w+ o
SECTIONS, B+ s4 O. }* c
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/* The startup code goes first into FLASH */
$ e: o* W; I/ j* }: p .isr_vector :
7 g( t: e/ q8 U6 r {
( l/ y" F) |, N0 h% [+ v . = ALIGN(4);
8 [* |, |# U+ L5 F KEEP(*(.isr_vector)) /* Startup code *// {/ z/ O4 p, W
. = ALIGN(4);
, v# N+ i2 z6 j# u, n2 F E7 q } >FLASH_ZW
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.nzw_code :
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. = ALIGN(4);
( M* Q# z+ d) Z: C6 Y; I e$ o *nzw_1.o (.text .text*);
* z& K, i# Y* }. J B *nzw_2.o (.text .text*); L- V& Y. Q5 E1 Y @
. = ALIGN(4);0 }/ O/ |0 v; a& B: M+ r
} > FLASH_NZW
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2 D' t2 U0 t, x0 X: s/ u5 U /* The program code and other data goes into FLASH */. H+ H2 z g) T# o
.text :
+ v2 d1 m# h* q# T( }) r {
: J! n8 e8 M' G) | V% Z . = ALIGN(4); 3 I/ Q) W0 |& o% ]" R( z
*(.text) /* .text sections (code) */
* p! z. y1 Y+ m/ |5 v, ^ *(.text*) /* .text* sections (code) */$ @1 p6 V+ _% D' m% n) b+ z6 w' C
*(EXCLUDE_FILE (*nzw_1.o * nzw_2.o) .text .text*) ! ]( R k$ i! U' R. S/ |
*(.glue_7) /* glue arm to thumb code */
; ^6 M H- @, ]9 Z3 ]2 I; p0 @ *(.glue_7t) /* glue thumb to arm code */
/ ]) |% I5 c! @8 p *(.eh_frame)% e" t! r5 h H# T& T3 ^
KEEP (*(.init))
6 q p* m; e. b& y$ F9 v2 M KEEP (*(.fini))" ^3 K! d, w/ o9 ]
. = ALIGN(4);$ y# x9 m# ]* o9 B, N5 j& g( W
_etext = .; /* define a global symbols at end of code */
* X+ U8 ?# T" \# f/ q } >FLASH_ZW0 z* y7 r* C3 h
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1) .nzw_code是自行命名的 section 名称,用户在实际编写时可以自定义名称。 { } 包含的 .o 文件就是要放进section 内的代码,{ } 末尾的 > FLASH_NZW就是将 .nzw_code这个 section 指定到先前定义的 FLASH_NZW区块。例如nzw_1.o、nzw_2.o就是 nzw_1.c 、nzw_2.c这两个 c 代码文档编译后的 object code, 写在这个c 文档里的函数和数据,就全部会被编排到此section 内。假设有10个函数,那 10 个函数就都会被放进来。# s; k) w3 A4 Z$ E. r% [$ }
注意:
' P: E# a) c$ L$ H2 {# P1) .o 文件名前面都要加 * 号, 代表要将这个文件中的全部代码或数据都编排进来;
. _8 ]! M5 I. i9 R2 j2) .text 和 .text* 是可执行的代码;& f$ H s* ?3 G2 m: t9 P+ M+ J ~
3) section 名称后的冒号与section 名称之间要加空格,如:.nzw_code :。 C! M& t' z& M6 A" z/ m8 f
2) 将.text{ } section指定到FLASH_ZW 区块。一定要加入 EXECLUDE_FILE这个命令,使用 EXCLUDE_FILE标示的代码就不会被编排到FLASH_ZW,不然前面第 1)点所作的设置就会失效。此区段内的*(.text)和 *(.text*), 就是告诉 linker 将EXCLUDE_FILE标示以外的代码都放到 .text 这个 section 内。8 r% I4 D2 M N& [. i; r
) v8 H9 l. S7 R: }. F附录1
: I6 R" P. @$ |, g/*
3 K0 J ?% s: v: X9 U* K*****************************************************************************
; e8 L) [9 J& y8 y b! A3 q* x( h/ O**2 o* ]$ O& }. f7 u8 |" {
** File : AT32F413xC_FLASH.ld' i8 p* u- o* N# W/ x t
**) d2 S& R3 C/ ?% Y- V9 w+ w! R
** Abstract : Linker script for AT32F413xC Device with1 U- a7 t% A K+ J2 [1 }
** 256KByte FLASH, 32KByte RAM
Z# z, |3 d& k! P**
: }+ ~, S9 R8 \/ `5 l5 Z** Set heap size, stack size and stack location according5 l. q' k& u4 m
** to application requirements.
$ p! p4 }( o: @$ ?/ Q**( r- W% C. e ^6 ~+ V t5 h
** Set memory bank area and size if external memory is used.
# N" {- @! H' {4 t/ a**
; ]8 q2 j C9 T8 u& U4 h- V** Target : Artery Tek AT32, ]5 J* K2 c9 L; C
**1 W# ~0 t1 N5 x
** Environment : Arm gcc toolchain
4 D, e7 y* d7 A**' s4 V( e. ?* H, K8 \3 {
*****************************************************************************
5 u% e d9 k1 T7 V. Q. g' {; _*/
8 U7 s+ g9 i; Z, j& r% L' i- Z8 Y/* Entry Point */
+ j: |5 S$ ` gENTRY(Reset_Handler)( a. m' q% v. n9 W% ~% T
+ b1 @ H, b4 t
/* Highest address of the user mode stack */& r: ^( Q6 n8 M1 j4 M: ?/ W
_estack = 0x20008000; /* end of RAM */* s$ F' |: l0 v' l5 ^, I- }' l
; r; S3 U3 G# H
/* Generate a link error if heap and stack don't fit into RAM */; z4 H9 i/ ~1 h2 { X6 N8 R
_Min_Heap_Size = 0x200; /* required amount of heap */# w z5 {& \. U: b* V
_Min_Stack_Size = 0x400; /* required amount of stack */: g3 }6 s' k5 Y' \) n& x8 y* ]: K
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/* Specify the memory areas */- e% M7 F) c! \3 R
MEMORY
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FLASH_1 (rx) : ORIGIN = 0x08000000, LENGTH = 128K; V9 A/ j3 h! d/ j! C0 F7 R
FLASH_2 (rx) : ORIGIN = 0x08020000, LENGTH = 64K8 `+ f0 P* m/ l* R6 b) t- y8 ~. ^
FLASH_3 (rx) : ORIGIN = 0x08030000, LENGTH = 64K( h& ]0 c; f' B" T) v( w! H
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
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c" W0 J& q T8 ?! Y" k, M8 [ N
/* Define output sections */6 v( _$ s* T% S" U* B* S
SECTIONS9 |+ X5 a, W$ |- Y. T3 o
{) J8 r+ h& Q! _$ j: R
/* The startup code goes first into FLASH */
1 ?9 I, ?, a. L! \0 c .isr_vector :
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. = ALIGN(4);
' u( U9 z5 b+ ?4 b- U, M/ d+ @! R' \ KEEP(*(.isr_vector)) /* Startup code */9 m8 P/ S3 T- q: d
. = ALIGN(4);/ X( f! H; X/ m W2 E& Y9 W
} >FLASH_15 S3 r6 ?) }2 J
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.algorithm_code1 :
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. = ALIGN(4);1 S- r+ v1 ~2 e' k# j+ A g
*algorithm_1.o (.text .text*);8 E; _9 t' w2 Z3 q& S
*algorithm_2.o (.text .text*);4 p8 L4 [: m+ n8 k4 W, @& Q
. = ALIGN(4);
7 j0 w6 `6 J; m0 g% j; k% _( E } > FLASH_2 $ O" I& d3 V6 h- o# H+ b5 R, h
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.algorithm_code2 :
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. = ALIGN(4);* N; n# G4 N0 }
*algorithm_3.o (.text .text*);3 S1 D2 ~* S6 F
*algorithm_4.o (.text .text*);: w# _/ d- f, f3 Q% Z* G0 W
. = ALIGN(4);
. M% V$ Q; X1 \1 `% T! H" S } > FLASH_3
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$ Q7 }7 e4 T6 p- Y% L8 i8 d /* The program code and other data goes into FLASH */( M/ O5 F4 e e
.text :! Q# \) _. D5 w% A# a* p
{
' ~2 {+ R2 V$ l9 }5 i: b6 f . = ALIGN(4); 0 }$ l# K! e# J7 H- |& S
*(.text) /* .text sections (code) */
9 B! f; d2 ` C *(.text*) /* .text* sections (code) */
+ @& W9 {: w( `5 w *(EXCLUDE_FILE (*algorithm_1.o *algorithm_2.o) .text .text*) ' k6 {% D: b* D" ` o
*(EXCLUDE_FILE (*algorithm_3.o *algorithm_4.o) .text .text*)
, }1 [0 z }" |$ y; H' D* x *(.glue_7) /* glue arm to thumb code */4 f% x8 O6 D$ F y
*(.glue_7t) /* glue thumb to arm code */
: s3 k* {, G+ M6 z& Q *(.eh_frame)
$ t7 [. A- d# p4 ] KEEP (*(.init))) |- x+ L1 c0 r5 C
KEEP (*(.fini))# Y/ ^, j& e! D' h+ d+ _
4 q Q# s1 ], t! m) _
. = ALIGN(4);
7 Z! x$ e1 x2 b8 c( d _etext = .; /* define a global symbols at end of code */9 V9 f3 K2 W$ ?7 S4 a) _
} >FLASH_1: W$ G2 |5 E# `. j2 {
( `4 A9 T6 v8 [* U /* Constant data goes into FLASH */
! F* j3 U0 v" ^, E+ ` .rodata :
6 D. ~, H8 G2 S* v+ p6 s/ g1 j {
" x6 A# k& s5 u# [ P8 i7 a. y" Z0 R9 \ . = ALIGN(4);
$ M- e, Y- o: R; e/ Y s& E *(.rodata) /* .rodata sections (constants, strings, etc.) */3 |" v" @1 m- a& h. e* Y5 J
*(.rodata*) /* .rodata* sections (constants, strings, etc.) */ 9 m* R' ^& q, Z- n
. = ALIGN(4);! p1 W4 Z1 E0 _4 b8 t* O s
} >FLASH_1
5 e1 }& G/ K8 p( |5 K1 W+ c, Q1 ^3 K ?5 B5 @
.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH_1
3 b' ]& u8 E; u ^! g- d; T .ARM : {
3 f! W5 {* l8 B& F& u3 {( O __exidx_start = .;, E7 }' A& a% P. z( |2 C
*(.ARM.exidx*)
8 }( T; w7 A# @2 _ __exidx_end = .;+ j( l; v" z6 G/ W* F5 e. H; M
} >FLASH_1
3 U3 P8 @- \' T0 T" t! _" n O* y, a, O9 P( w. R( q
.preinit_array :
' s, s3 S" [2 ? {
3 m" L( M/ ^* `* p PROVIDE_HIDDEN (__preinit_array_start = .);
1 z5 F- ?- x( E. {' ?# { KEEP (*(.preinit_array*))% q# F& W: |/ U4 ]1 X
PROVIDE_HIDDEN (__preinit_array_end = .);& B% K- o c: K* e
} >FLASH_1
1 L# T i4 e0 a; Z: M% @9 \% M" y9 J' G2 X6 i2 T
.init_array :
4 v3 L6 d9 y- m- \* U7 Y. D; ` x {
3 ?- B8 x) K0 k$ f PROVIDE_HIDDEN (__init_array_start = .);
8 `6 ^; S0 E; y8 y; b7 V Y$ A* g KEEP (*(SORT(.init_array.*)))
) _- |: S0 @, m8 f KEEP (*(.init_array*))! I) B+ C4 ?% v+ U, P) |. j4 e! p
PROVIDE_HIDDEN (__init_array_end = .);$ { }' K" n9 R/ }
} >FLASH_13 h9 w3 v5 I8 ~) S1 C7 h$ q
: m" k! f$ s0 R; j+ S" [ .fini_array :: {- s U8 W9 a- b! @( S$ V
{ g& O% X$ ^7 H/ R; B1 {
PROVIDE_HIDDEN (__fini_array_start = .);
# U, }8 U( U% w0 F KEEP (*(SORT(.fini_array.*)))
) g* d, k+ G+ R: h2 s* `# q5 E KEEP (*(.fini_array*))
) W1 |& l2 p+ l- H( U PROVIDE_HIDDEN (__fini_array_end = .);
; {* Z" v: D1 p9 n: i$ N& w. i } >FLASH_1
|/ a8 X ~9 J r8 \/ Q8 N1 L, f
/* used by the startup to initialize data */0 D- {/ |# K# T- h( p- H' `: X
_sidata = LOADADDR(.data);
4 }) I( p2 b0 q% d
8 @$ H, t: s9 ^1 V /* Initialized data sections goes into RAM, load LMA copy after code */; B8 o6 t3 ~* f
.data :
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. = ALIGN(4);
7 g7 L) q1 Q' b1 A" ^1 s# E) W _sdata = .; /* create a global symbol at data start */
, }$ l4 x) ^6 i, c, p *(.data) /* .data sections */
6 z7 A) z" p) Z! s *(.data*) /* .data* sections */
% N) a& j, B2 k3 v" s1 _
7 G7 }$ p" H. [8 p6 Z2 F . = ALIGN(4);5 X& ^; ~" C5 B2 V* N- V5 m2 b; l
_edata = .; /* define a global symbol at data end */
3 K/ f6 c. c+ m } >RAM AT> FLASH_1 1 M% Y& p; h+ }! ]% v' b
& M/ ]" s; N7 p1 O) P
/* Uninitialized data section */
2 A7 b4 W( i# y- \) Z& C; h . = ALIGN(4);, v m# m- S; P5 L% ~& ~ W
.bss : A5 k; K4 ?3 l! v1 q( I! q/ r* @
{* f2 C0 `* k" a9 V3 E5 Y
/* This is used by the startup in order to initialize the .bss secion */8 u0 m' z. }9 T1 C
_sbss = .; /* define a global symbol at bss start */
! M/ N N2 `# B __bss_start__ = _sbss;- s: ]; w9 W: d% j
*(.bss)& M& G' p/ b& D2 D
*(.bss*)
* d3 r1 I' r9 p% M- m3 ~) w; x( B *(COMMON)+ ]3 F* P- z+ c- ?5 v# M
4 K% E' z! g- _$ z . = ALIGN(4);
1 A% i6 i0 U# P- d/ v# p; ?* m _ebss = .; /* define a global symbol at bss end */
. j8 ~* U# |- f. S; n __bss_end__ = _ebss;
1 R& d7 i5 Y! {0 V } >RAM
3 ?( `; F2 W L1 ^# e3 x* ]; N9 k
/* User_heap_stack section, used to check that there is enough RAM left */
$ ^7 t8 G$ M3 o& h ._user_heap_stack :4 k f1 j9 \% `' M
{
# y6 L6 a; F v . = ALIGN(8);( i m7 x' y- F3 m D
PROVIDE ( end = . );, s V* y( O4 q; y# H. m8 i
PROVIDE ( _end = . );2 `7 d% _3 o% w9 P: v
. = . + _Min_Heap_Size;# l' M) S" {; v) o9 O+ \
. = . + _Min_Stack_Size;5 A/ I; v9 v) u2 J- W; x
. = ALIGN(8);( I: {: `" T. Z3 |9 I5 C' Q
} >RAM
j$ |6 C' h- m, F3 W' G- {3 a$ D3 Y7 R. ?
" X5 x7 D7 k5 o- W! G2 S% _0 U+ c$ ?9 \" t- I( @0 p& U1 Q
/* Remove information from the standard libraries */* [: _8 U- W4 x- ?
/DISCARD/ :! |: q# \' O) ?1 j9 N; m0 A* u
{- S, B& Y$ k3 s+ h: G, d6 g3 M
libc.a ( * )
/ M0 e- h8 j5 d0 X/ [9 d8 h' Q libm.a ( * )
y1 Q, `9 O1 Z+ I libgcc.a ( * )
) q3 _- z. G2 _9 r$ d/ ^ }# ?5 {6 F; P5 e7 g) H6 n" T
% I+ {, a9 j D( `
.ARM.attributes 0 : { *(.ARM.attributes) }: J! x A1 V( B7 y+ D
}
$ x7 W* x* }/ Y9 x0 q' p' p
2 d: i6 ~/ f; q; F4 d) X附录2
4 [! S: m+ a8 E5 E/*
" q' n4 b& \: v# m, P2 ^# b*****************************************************************************! Q$ b5 y a1 K- A \1 S% H7 I
**
8 I0 g! T! ^' l** File : AT32F413xC_FLASH.ld
" i# S6 Y6 K* P @! F**
, i" @/ [; P1 P- a" P** Abstract : Linker script for AT32F413xC Device with+ y1 C! p8 D% B8 `0 [
** 256KByte FLASH, 32KByte RAM
' I5 D% R6 j9 j9 U% j**
6 N) @0 P% M5 \. N7 {** Set heap size, stack size and stack location according
- W# |5 b- F2 c% H, H** to application requirements., c! ^* L0 i1 W- I5 M5 j5 }
**/ K- B# g# G( l+ J* d9 W
** Set memory bank area and size if external memory is used.
% d: v e+ N/ \6 ^& _# [% Z& ^**/ a0 A" m/ P4 L5 t
** Target : Artery Tek AT32' _) J% v. ]' D* _' K7 K
**5 n7 r' h! O+ j5 b5 x6 N
** Environment : Arm gcc toolchain; v# n) X3 I3 w: h) o3 I9 \
**
. }$ N/ `+ x: M2 Q7 w* B****************************************************************************** V6 B* k7 \2 g5 Q
*/
( s- y9 _4 T4 e& U) S1 p G$ T7 k; ~; C
/* Entry Point */
5 F6 p! [ g. R5 NENTRY(Reset_Handler) _2 \/ @8 d% Q1 [
& t0 b- e* \7 R1 @, b5 z/* Highest address of the user mode stack */# o' H# `- W1 X+ c% G
_estack = 0x20007FFF; /* end of RAM */$ [4 N' X) Z: F/ O O: G, j
1 p$ ]6 \. i+ ]7 g# `
/* Generate a link error if heap and stack don't fit into RAM */
0 J8 i: R2 |3 K_Min_Heap_Size = 0x200; /* required amount of heap */1 Z/ Q' N8 U; C* T2 c/ W
_Min_Stack_Size = 0x400; /* required amount of stack */, g9 ?/ R4 g k& ^, M/ t
: t3 d) W5 k; a* x/* Specify the memory areas */
+ P' w. [, d" f- Z( {5 I/ ?MEMORY4 S# e/ o, ?7 s1 \. B
{
X! U7 r. _: v& F4 TFLASH_ZW (rx) : ORIGIN = 0x08000000, LENGTH = 96K) s2 Y9 R: u/ c/ t7 L. v& g
FLASH_NZW (rx) : ORIGIN = 0x08018000, LENGTH = 160K+ [3 u/ G! d2 C
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
4 a) D2 _# S4 E" c/ V3 h9 S}
! q/ P0 Q5 j, D" C1 z4 K8 ]9 ]4 Y g. L x& G$ M
/* Define output sections */3 h" M+ C2 F! ?6 }; N9 e
SECTIONS" w+ S3 H1 P4 ]
{
2 Y2 r- Z# ]/ p4 v& Z* F; v! d /* The startup code goes first into FLASH */
: ~$ u' ?1 g( Z6 D" d .isr_vector :( v5 c/ E7 p" O! ?7 o& y
{/ l- s1 Y1 ~. i
. = ALIGN(4);
5 ` R; f: Y% t7 b6 z KEEP(*(.isr_vector)) /* Startup code */$ c2 Z5 @! ] s' t W
. = ALIGN(4);
' y, j3 | u0 q' q& K0 i } >FLASH_ZW* C' R4 J3 v9 N$ G& [3 ^6 a% c
- d- T; _, p: v; X4 s% g) V, v" U
.nzw_code :
% Q$ _# ^' w* l" J: C. s( d, ?2 u- | {; s2 z. H3 [6 [
. = ALIGN(4);8 {! x. Q2 k- H: x, |3 p
*nzw_1.o (.text .text*);
( I, h- l, o u; p3 O*nzw_2.o (.text .text*);7 j0 j) b. I5 s2 ~& l
. = ALIGN(4);7 }+ Y2 g* @, m2 E Z
} > FLASH_NZW% H0 }1 G+ R2 Y( y& x- i. F. q7 Z
: M4 w# w! B- V' d" P9 N# |
/* The program code and other data goes into FLASH */
8 Z0 E: ?+ D0 {& v( z: P/ _- N .text :- R; z: @; G( h
{0 |' t5 z* f# s6 J5 E* Z1 n7 a
. = ALIGN(4);
6 |6 V) {& v& c! B; t) `- D( Z9 y *(.text) /* .text sections (code) */
% b! e( H7 \* {& X8 C! h- f; B" E5 y- n *(.text*) /* .text* sections (code) */. X# e9 O" V7 e6 f& q
*(EXCLUDE_FILE (*nzw_1.o *nzw_2.o) .text .text*)
4 v4 R' c" ?8 O1 v8 b; \6 { *(.glue_7) /* glue arm to thumb code */# J2 e2 m' Z; `/ B" T' D: _
*(.glue_7t) /* glue thumb to arm code */
. X+ j; P3 S2 h8 g: E0 N *(.eh_frame)( ]. I- Y2 u( F2 e' j W t
$ o1 k: q5 T$ d0 W7 [1 p9 S
KEEP (*(.init)) ^4 E, i a A( W* l
KEEP (*(.fini)) {. q" I. O% X9 O
1 n2 [, H% v0 k- P7 b# D$ c# B . = ALIGN(4);
- ?( w' n! Q% } _etext = .; /* define a global symbols at end of code */, M3 W4 B$ ~: U8 n+ I$ }8 h$ n
} >FLASH_ZW
; B7 j% T# ~% s* v* F: C6 U' m& m; E
4 |1 D3 X7 i, Y /* Constant data goes into FLASH */1 Y& A: x' b; X5 `1 v$ j
.rodata :
3 P$ P Q& `1 p/ z& }3 L {
. Q0 M" V2 F1 {" b . = ALIGN(4);
( O- R" w8 C/ a7 D *(.rodata) /* .rodata sections (constants, strings, etc.) */
6 X+ T1 q* ?0 W) S/ l$ P' g3 u5 R *(.rodata*) /* .rodata* sections (constants, strings, etc.) */
/ i- s& v! y4 Y- s . = ALIGN(4);
: H2 Z" `4 V0 P# T" W8 c( e } >FLASH_ZW% ~0 z/ L7 p3 x( o6 Z7 A
1 ^" R4 _/ Y) ?
.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH_ZW- O1 C1 A3 n2 s+ Y P
.ARM : {) A9 R7 p5 t/ n* h% c$ _# i* G" O
__exidx_start = .;* N) a+ v& F# c+ l/ g4 M
*(.ARM.exidx*)
7 @4 c# U' [( M! o6 B9 P __exidx_end = .;
2 H, a* _& O3 @ } >FLASH_ZW
4 f5 i3 P# S1 r& F" g; F7 _3 ^& ]3 p# T6 j" R' r1 [
.preinit_array :' M; N3 f# [+ w
{7 M$ B3 K, j) z
PROVIDE_HIDDEN (__preinit_array_start = .);7 @$ m6 N' e, T4 f$ L! K5 B1 n
KEEP (*(.preinit_array*))3 U& @0 z& H T) L: C- c' o Y
PROVIDE_HIDDEN (__preinit_array_end = .);* W, |% w( L- F/ m
} >FLASH_ZW
9 Q/ ^7 ?9 e4 Z* @$ [ q+ v .init_array :
% A! Y& {) m" k% Z( X {
P ~/ g* m6 u o" V1 S- B PROVIDE_HIDDEN (__init_array_start = .);; z- q/ M& M# j+ R" T- h- x$ R
KEEP (*(SORT(.init_array.*)))
% }) B* f9 v% t6 q% w* h KEEP (*(.init_array*))+ v+ @ d" q4 b( ?, d
PROVIDE_HIDDEN (__init_array_end = .);5 {* ? f. e+ C3 t9 w3 x" q
} >FLASH_ZW. [( r" ~4 ]3 S% m% k
.fini_array : I* C+ V- ?, o
{
" E( x4 |+ P$ u8 K8 P- v2 \ PROVIDE_HIDDEN (__fini_array_start = .);' C' i0 v2 H5 i8 X6 ^1 h5 P- K8 p' \+ ^
KEEP (*(SORT(.fini_array.*)))- i8 @% m; v1 V) i& y% s5 ]9 e
KEEP (*(.fini_array*)). q, L4 |8 I* `% Q8 s
PROVIDE_HIDDEN (__fini_array_end = .);( g. r. l) a6 k
} >FLASH_ZW3 D2 i9 i3 I( M/ l. t
+ }9 A) H0 R8 {; m
/* used by the startup to initialize data */! y& y; h* J$ O* o7 E* u
_sidata = LOADADDR(.data);
' i }7 J" Z# w& A8 z3 a# @' S: [) V; z# a! D b, Y3 f
/* Initialized data sections goes into RAM, load LMA copy after code */
' V% q( T$ ?2 }6 a+ U/ r .data : % i6 h* [/ e- V. ~
{
1 n, P( D+ a) F' R L . = ALIGN(4);
' e, i* c8 X, C, m9 a _sdata = .; /* create a global symbol at data start */3 P, ^& Z* y* @$ ?
*(.data) /* .data sections */* ]8 k# f, T& c
*(.data*) /* .data* sections */! \- V# y& ?0 r% h8 H- p
* V# w! `, X/ b) t0 F
. = ALIGN(4);
- Q% G2 T6 _2 [6 b; G _edata = .; /* define a global symbol at data end */; T! P& m, K0 R- _. l- {
} >RAM AT> FLASH_ZW+ D+ U! x; q( d2 h' [+ |& S
" W7 c/ X) q3 d' o6 N
/* Uninitialized data section */
5 H( k: \4 y# B3 C& o . = ALIGN(4);5 |5 M- Z2 H' v8 |0 Z, e
.bss :
8 U0 m- D D( d! Y+ n. [& R" U& C {' ]! v5 Y3 [3 m% ?
/* This is used by the startup in order to initialize the .bss secion */# ? K# \' X' e
_sbss = .; /* define a global symbol at bss start */. J! p* _' ]; L" q" |+ R
__bss_start__ = _sbss;
1 J" ]9 U7 p3 y8 i *(.bss)
" v# X4 y3 e, o( k# P2 N- `' r *(.bss*)* ]' ], ?5 E! ^6 `1 X% K9 q1 R. c
*(COMMON)
* H1 N2 H$ d6 G, d% z) h. q* w1 f, V+ e: q; g' @
. = ALIGN(4);! z |& \! P0 @ I' N3 q* w
_ebss = .; /* define a global symbol at bss end */
7 ?+ W- }! |$ H __bss_end__ = _ebss;1 Q8 u( Z$ _* f8 O+ L+ b6 Z& B
} >RAM- K0 H7 j$ L8 p f; m; m
2 J2 l2 Z, `: X5 P
/* User_heap_stack section, used to check that there is enough RAM left */1 \7 _, E" [: ~! s
._user_heap_stack :2 _, h. E7 O( N8 s- P4 J9 N
{. b6 v" M1 H& X* j# ^, q2 U2 p
. = ALIGN(4);
; m) e- ~2 F3 v! I PROVIDE ( end = . );
% M6 I9 I! G+ C4 N5 W+ c4 e PROVIDE ( _end = . ); l: N p- `' o1 d1 y/ h& a
. = . + _Min_Heap_Size;: E6 e9 ^# N# J1 M1 t
. = . + _Min_Stack_Size;
: F0 _7 R$ G5 P" w. y. e . = ALIGN(4);
, p+ a# x3 h, y+ g7 u' f } >RAM2 j1 t8 k0 d; v9 {+ E/ M" o4 H
0 C( \5 d) H8 d! ~ /* Remove information from the standard libraries */
7 M v0 i O+ ?3 F1 g) f& P. a /DISCARD/ :; g9 \: I) M+ y4 ~& g* P' f* r9 b
{
5 h( r K4 P$ O$ f t( ^: n libc.a ( * )0 Z+ x* c3 _6 [
libm.a ( * )
" m. p: g* f; v8 v/ N; k libgcc.a ( * )
/ J% y9 O' e/ i" c }; q6 g( v' ?" h Q$ d( k# j E M
7 o0 r/ L$ N: i .ARM.attributes 0 : { *(.ARM.attributes) }: G% a" w6 D$ z! h0 }# A [- J! X
}
4 {0 w8 W4 Z% P* g$ K7 y5 j9 o; O3 u7 L' t" f
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