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Questions:如何在Eclipse中实现分散加载?
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( O" H" s4 e: I* \5 S) f% PAnswer:
+ Q7 W% }1 {2 t0 `" k2 o: \& \' l$ I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。
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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。 6 M7 M6 [# R7 N3 A4 l2 E/ X
( G' R/ I; k- J0 m. t
3 y3 j5 d! O! {% q2. 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:1 {8 o, a6 M: d* b% z
/* Specify the memory areas */
1 L* j( k4 Y: @) ^: f, ~2 k! CMEMORY5 b, X7 G7 N/ {( s
{* A& h5 I4 n: N" V( O5 A
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 256K' [% D( q. T, |7 g! g) L0 I
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
; q$ W& C8 A4 @7 b, J h: t}
$ {* n6 \. C+ t0 S! ^
8 Q' O/ A% s1 x) [) xr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。
' O; I# I) j; L8 y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。( C8 d8 d. G. B2 \, C
/* Specify the memory areas */2 P: K6 O/ G4 @9 s7 U& V" s
MEMORY7 T( Q4 o& e0 l! L
{) l% ~* W( R; z4 V: E/ a# d7 @
FLASH_1 (rx) : ORIGIN = 0x08000000, LENGTH = 128K ?$ ~: b, ]! S0 w6 p& N# x" A
FLASH_2 (rx) : ORIGIN = 0x08020000, LENGTH = 64K
. R" {8 E# x* j) _( F1 U" IFLASH_3 (rx) : ORIGIN = 0x08030000, LENGTH = 64K
( N. n7 G. O; p+ K9 Z3 eRAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K. w. Q3 |+ r3 Z ~
}+ a* h4 m" N# @2 p! l+ ^4 M; D
/ D3 |' U) N1 K# e7 [7 s
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。
$ z( |( e3 g: W9 \/* Define output sections */$ a% q: N( P; V, ?( R* q
SECTIONS
" \+ T8 i, i& i* Z{
& D9 S: V9 ~0 w" ~ B, O- d5 M /* The startup code goes first into FLASH */
0 e0 D8 G7 a" {% o* f .isr_vector :
+ v( A7 i5 r& n# ]6 H {
3 U# d3 u+ z* O; {2 N8 J) Y, h$ L: Z . = ALIGN(4);
1 ]5 n8 b6 u, L- C+ ? KEEP(*(.isr_vector)) /* Startup code */9 X5 @; ^$ b# g1 j
. = ALIGN(4);
, C W/ j3 z" ?8 L3 {! l } >FLASH_1
( x$ B- T. G( @& M n# H" e0 n! I. Y8 E3 e
.algorithm_code1 :
1 h; o- {( @! J4 Q {
* W3 B; h J c8 v' h6 e4 h- r . = ALIGN(4);
9 E1 d8 T. R; p) P; k *algorithm_1.o (.text .text*);
( L0 @! |' A9 O! Y( k *algorithm_2.o (.text .text*);
1 d @* m B& u4 @ . = ALIGN(4);/ a/ @: ?$ B$ C2 k5 l' k
} > FLASH_2 1 a @8 N# A8 G# K7 I
g# Y6 t8 I/ r( z# ^" n3 C0 f .algorithm_code2 :
! z0 k) l. O' H; ~ {0 J; w9 g; T5 e& z6 o
. = ALIGN(4);* u0 a- b+ n. e4 W% R+ r& [' s3 T# V
*algorithm_3.o (.text .text*);
G+ U( {0 X+ y1 y *algorithm_4.o (.text .text*);
6 r7 J; |/ u9 R3 i4 m2 Q . = ALIGN(4);
/ ]/ l- Z E6 D& o$ J c } > FLASH_3
3 w2 Q* \% ?9 U
0 o5 G p) ?( H% L6 A /* The program code and other data goes into FLASH */
( X4 `2 S7 D% B: I4 }1 s .text :$ @0 m# T8 v5 k, h' j6 `, s& Y7 Q1 Q
{
/ P0 R' q" _# B . = ALIGN(4); ; g# u( n- d$ x% O1 _
*(.text) /* .text sections (code) */
/ u% _) Q9 y T" ~. `" C9 _ Z5 w *(.text*) /* .text* sections (code) */5 O, @8 R6 w( R2 E
*(EXCLUDE_FILE (*algorithm_1.o * algorithm_2.o) .text .text*) 4 {( D- P) z1 @. q/ [+ j
*(EXCLUDE_FILE (*algorithm_3.o * algorithm_4.o) .text .text*) 8 u# X3 M& W/ q3 e2 p$ c
*(.glue_7) /* glue arm to thumb code */
7 Z/ D, l) H# ] T- m t *(.glue_7t) /* glue thumb to arm code */: D2 v4 k: ~" `$ P, }* D; ?
*(.eh_frame)
; G- Y/ Y9 H2 N! M KEEP (*(.init)); t8 l) b4 @* o( F5 M! {
KEEP (*(.fini))
4 A |* P* [0 ^4 h" i/ B; w7 ? . = ALIGN(4);
% i, j' ?4 q9 {6 J _etext = .; /* define a global symbols at end of code */0 f8 G" a9 @7 }$ m
} >FLASH_18 K5 L4 `( E5 O7 \
2 D, T# H1 Y; C( h
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。8 [5 A1 H ]9 O- e8 F0 V
注意:
( L9 N! r3 m6 j5 J! \% |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;
" F! N. \, S1 g1 o8 h& k) l B2) .text 和 .text* 是可执行的代码;
1 e" a* e" c: h* P- r9 C3) section 名称后的冒号与section 名称之间要加空格,如:.algorithm_ code1 :。
1 `4 ?% O: \6 @3 P+ I% f7 X( X2) 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。
; Q' K% _- I0 G1 s3. 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。
; ?2 X9 z+ J2 y+ n% u/ S& Y/* Specify the memory areas */9 e# G) b- n- O
MEMORY/ ^ p- _% ^" D: o& m! v
{
, B: y+ V' M; b4 u6 G9 a. V+ @2 V fFLASH_ZW (rx) : ORIGIN = 0x08000000, LENGTH = 96K
8 m/ L* D7 s3 K# ?' P( @ a4 ZFLASH_NZW (rx) : ORIGIN = 0x08018000, LENGTH = 160K
' _- j; x7 C4 \( H7 \ @RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
! m4 ~4 V0 \- L2 {+ v( ~}3 o! P4 M+ X1 @# u% g- H* e
& w+ B, {% {. [, M; W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。) R% r# c7 U7 ] P; C) h
/* Define output sections */6 j d- Q2 g, q2 ?: j1 ]# I: T
SECTIONS
; H) G3 m0 [6 z! }$ Y{
- v3 ?* F0 ~: r! w5 q4 U, U /* The startup code goes first into FLASH */+ Z7 X) z' |, G% c
.isr_vector :
! v4 ^, T3 R { {& D# X; o9 [% y. |/ w9 n# X
. = ALIGN(4);
Z4 y6 h' u3 T' {# r KEEP(*(.isr_vector)) /* Startup code */
; Q( P4 I# d+ K7 I; ] . = ALIGN(4);
" k5 g0 x" s! M% n3 A3 i } >FLASH_ZW$ s) Q0 ]: C% O
) O9 K R! j. [1 K) v: N. _# E
.nzw_code :8 _( O3 p. [0 i5 F) L! H
{
2 s+ Y1 L; V% @ . = ALIGN(4);
1 D% q5 W8 e* c/ N* B *nzw_1.o (.text .text*);6 z: @0 E9 S- k, o
*nzw_2.o (.text .text*);' V# d% U1 h8 R! h' P" Q
. = ALIGN(4);
/ j3 m0 w7 L, b5 Y o } > FLASH_NZW
" n7 O5 y# L) v" t- N$ r3 ^$ W- K/ x( w
/* The program code and other data goes into FLASH */9 K" }0 ^# b+ z
.text :
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) P! O5 b( U: H/ f0 y z6 N . = ALIGN(4); / H! j; K0 Q1 Y+ K1 }& Y! e& @
*(.text) /* .text sections (code) */$ l9 s. f0 ?% r7 w& q
*(.text*) /* .text* sections (code) */
$ u, z- ?! A$ q) q5 y: L7 C *(EXCLUDE_FILE (*nzw_1.o * nzw_2.o) .text .text*) a, n5 p9 A# A& a& M
*(.glue_7) /* glue arm to thumb code */3 U/ U) s: n) z' S" X/ S- X/ E
*(.glue_7t) /* glue thumb to arm code */
1 g+ ~/ w+ Z7 S8 }: k& n1 e F% q *(.eh_frame) {8 b* W* U3 {3 `. n
KEEP (*(.init))
9 N7 L7 F- C& D KEEP (*(.fini))0 G$ Q0 P2 x+ S& @# g2 K% W% `
. = ALIGN(4);% C) q4 \7 N! B+ o$ r
_etext = .; /* define a global symbols at end of code */
% @: L! q- c. u' j } >FLASH_ZW
0 L8 a. |, D {$ H
% {, L2 A# L: X6 x1) .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。
+ o) L# C7 c2 u/ D& q) J3 W注意:
1 L; h# G+ K3 }3 U" {' K1) .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;
* z' g Q! w# e2 q2 ~- Z v- j2) .text 和 .text* 是可执行的代码;
; }6 Z7 z' Z. W' B3) section 名称后的冒号与section 名称之间要加空格,如:.nzw_code :。
( f- ]4 G8 E; s! ?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。4 ~' ~$ x! i# E" o4 Y) t ~
7 B9 R/ B$ K/ T5 v3 l. Y" Y5 n [附录1
. b- A0 T, P- P1 R3 h) `8 e3 R5 V/*
+ p# Z4 D; M6 q7 R/ \5 e*****************************************************************************
* H6 U- _. S) {0 Q" {**
. |$ O1 d* q6 `& n [. z** File : AT32F413xC_FLASH.ld$ }0 p9 ^* Z8 X$ N8 R- n* X
**
4 x6 g/ R9 W# W% L** Abstract : Linker script for AT32F413xC Device with1 K+ l% g; j6 N5 w' @5 f! B8 b
** 256KByte FLASH, 32KByte RAM
3 m3 [0 }( l8 Y. e% y7 S**6 ]; I3 k! y3 k7 m3 B" }: H9 D9 z F
** Set heap size, stack size and stack location according
/ ]& g c/ Y ?$ v1 Y** to application requirements.
. S e' N# {* B: ]*** T( d; Y& s9 r3 J
** Set memory bank area and size if external memory is used.6 b9 g1 i# d# i. t* \ U
**4 G0 ^% D6 }; m
** Target : Artery Tek AT32
7 [0 Y# A4 q8 |2 W0 @**6 X& N, `" x, u( f( w, P
** Environment : Arm gcc toolchain
" Z) {/ d; _7 j* S% N3 H/ H**
" t5 v, y7 I% u) W*****************************************************************************
# {# E4 `( t& ^/ ?0 F*/; C* T6 |' V, Q5 a$ j1 O- K/ |
/* Entry Point */5 T; h6 D4 ^2 \8 ?# z8 G' E) t" T
ENTRY(Reset_Handler)
- Z3 m' b' K* y4 [8 U' b! o1 x) p; ?$ [9 s, t$ Q5 I9 ~
/* Highest address of the user mode stack */
; g: G0 \" P. o7 t_estack = 0x20008000; /* end of RAM */
' D ]9 g$ y! s' K+ A8 d6 k* w9 n
/* Generate a link error if heap and stack don't fit into RAM */
6 I5 D( f: Y5 w% \! G_Min_Heap_Size = 0x200; /* required amount of heap */$ E+ e z( \) d0 B
_Min_Stack_Size = 0x400; /* required amount of stack */
2 n# V9 J. Y- c: P/ w* V4 V' n& X! Q! d1 e
/* Specify the memory areas */
5 c$ X: d1 U0 t# vMEMORY( H! L3 Y; T$ ^: B
{( \; b6 o8 n" w, G
FLASH_1 (rx) : ORIGIN = 0x08000000, LENGTH = 128K
# Y2 L0 d( Z4 G9 P8 |6 f: Z3 fFLASH_2 (rx) : ORIGIN = 0x08020000, LENGTH = 64K
* g! c z0 m5 J/ `6 y$ |FLASH_3 (rx) : ORIGIN = 0x08030000, LENGTH = 64K, E# f' R8 x9 Q+ G- W" ~
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
( d4 ?3 v4 h6 R+ f: F1 X}6 F/ W: A6 i4 L1 K5 x
$ J* d9 c4 {! n9 G5 h: @
/* Define output sections */* {6 O0 F) \+ B9 R6 b
SECTIONS
6 ]& @; ]3 R2 K0 {{
! S/ e- L+ R, d7 ~4 d" V /* The startup code goes first into FLASH */
# l* J }! ]8 \) X. |/ h& i .isr_vector :
* X5 S7 |+ m+ t3 P: O- q {! X8 L6 |+ q' K! s6 n
. = ALIGN(4);2 p6 Y9 h- v7 [
KEEP(*(.isr_vector)) /* Startup code */$ x0 | y# A2 e: P/ X
. = ALIGN(4);$ L9 h) H. F# P6 V: H
} >FLASH_1
/ k3 a/ z8 y# m* R" G- E& D% Z
" E; w) U( T+ a; Q9 K .algorithm_code1 :
6 F- S0 l0 S( S* z {' m3 A/ z0 S3 b, n) U
. = ALIGN(4);
! m) B' I1 E. j *algorithm_1.o (.text .text*);2 G5 ~9 h+ N8 S9 Z, G
*algorithm_2.o (.text .text*);5 W- g) |2 h, y/ F8 R* |" I4 V
. = ALIGN(4);8 g3 B) U. H/ [* @
} > FLASH_2
& j6 ?" K9 K+ N ~
( d2 G8 c- a( |4 }: ], E .algorithm_code2 :" ?5 O5 g3 v9 q; k. ~
{
6 B. F' b7 G1 d5 }+ q) y1 W . = ALIGN(4);: L0 x3 i% }# G# q( Z2 }
*algorithm_3.o (.text .text*);
7 ^, d6 w% `7 p6 Q( b w! Q; F *algorithm_4.o (.text .text*);% R' d0 L6 A+ _/ z& `: @
. = ALIGN(4);& A; K' ?* }1 G9 P/ m- }/ |2 K
} > FLASH_3 9 j' L# N" `, Y* L7 [
1 W) @# E5 l( F" q /* The program code and other data goes into FLASH */
9 k6 I8 s" l7 B$ w- e4 w/ Z1 k$ f' N .text :
' {5 }7 {) }0 h: C {- O& ]( j/ {! Z/ i
. = ALIGN(4);
' n$ v, g6 S( Z0 A6 W *(.text) /* .text sections (code) */( b3 j* U8 f0 g: Z0 l: O) y
*(.text*) /* .text* sections (code) */+ a7 x5 v" q8 g- L L. ^& b; q
*(EXCLUDE_FILE (*algorithm_1.o *algorithm_2.o) .text .text*)
! y/ i1 N: t' D, B1 v0 ~6 }- X7 R *(EXCLUDE_FILE (*algorithm_3.o *algorithm_4.o) .text .text*) ( P3 U+ k% a, ?9 i5 _9 Q
*(.glue_7) /* glue arm to thumb code */
8 o" S6 ?6 t0 o) ]' a" j. u *(.glue_7t) /* glue thumb to arm code */
5 ^' D' Y# o- M! w *(.eh_frame)
9 n$ W3 g# F& J* l KEEP (*(.init))! j- J! t6 s, R k) h" y* u
KEEP (*(.fini))# X: @! ~3 B p
/ ]8 c6 B+ @. G, s8 j
. = ALIGN(4);
- ]& c+ S- u% v( b# L, u _etext = .; /* define a global symbols at end of code */ X& n( s% U& }& q0 H9 x6 R
} >FLASH_1/ I) l# w9 o5 W; S; j
0 m# O0 C3 m9 a5 J& p- x* U /* Constant data goes into FLASH */! L: u' S+ ?/ K7 W
.rodata :
+ o) C a( T0 m. H$ S {7 r& _# A3 g3 L/ V; y( u$ I/ ^
. = ALIGN(4);
& L- m, }7 ~- B; S: B! X *(.rodata) /* .rodata sections (constants, strings, etc.) */
8 O9 R* ?* y4 ~$ w) x7 T" j *(.rodata*) /* .rodata* sections (constants, strings, etc.) */
' [5 y# g, X8 v$ `! L . = ALIGN(4);% H0 i5 Y: g7 s' S0 W7 k c" u4 t1 C
} >FLASH_1 R" b5 [8 N& O- k4 D
3 i. O- H' {6 h" v2 x" M .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH_1* |/ E2 Y" B% [5 o; @6 R
.ARM : {
7 M7 [- D9 k, ?, ?% I __exidx_start = .;
9 {! ?( p! t! }; t W0 `! n/ D *(.ARM.exidx*)
) X, C0 m2 ]; ~( [: | _ __exidx_end = .;
" \6 i# X4 R5 S# c" e } >FLASH_10 S9 f4 e; [" J/ c
# j \1 x! I* S$ J0 k .preinit_array :
5 j% {' d0 A& e5 O' |7 S4 }. X) \ {
: f7 F3 C, G' F) S PROVIDE_HIDDEN (__preinit_array_start = .);
$ Z: d/ X( p0 k KEEP (*(.preinit_array*))2 t: i- T' {' A" N( @6 @0 U
PROVIDE_HIDDEN (__preinit_array_end = .);
2 |7 W7 Q( q. L) r" V `& w! d0 Q } >FLASH_1
* s8 i" ~' ^# R4 J1 m3 Q
1 l7 k1 V7 R* N% }2 K5 p9 ~5 n .init_array :7 m: ]! `) h0 y5 W5 [! q$ S* e
{
6 @6 e: n1 z: G; P" \+ ` PROVIDE_HIDDEN (__init_array_start = .);2 G* }5 f- @$ W. ?1 G" Y
KEEP (*(SORT(.init_array.*)))
& u3 @, `9 x% I" S8 B% A KEEP (*(.init_array*))
$ Z; T7 H& G) M5 V j. x2 Z PROVIDE_HIDDEN (__init_array_end = .);
6 a' ~ n6 }; U, U) @% H. | } >FLASH_1 s! s3 P$ a* ^5 n7 X2 o: S
, H3 y0 n: D2 e9 T0 B' ?! { .fini_array :
' z4 @+ L' r: ^; L/ R& |$ Z! _ {
, n# O; z2 D+ H7 _4 I( M PROVIDE_HIDDEN (__fini_array_start = .);% i @) ]5 ^5 D5 I5 G
KEEP (*(SORT(.fini_array.*)))
7 ] d5 H# U8 k8 B" k& X L$ X KEEP (*(.fini_array*))7 K+ L( ?1 G& _4 f8 [! a
PROVIDE_HIDDEN (__fini_array_end = .);
' R9 ]) }7 u1 ^ } >FLASH_1* m" {! \) |) [. @8 v+ V0 W }
/ B" x. w* [1 \1 {6 ^ /* used by the startup to initialize data */# c( {. w$ L7 \7 D- W% w
_sidata = LOADADDR(.data);
/ K" W: X2 H, M9 a3 h
! N. `0 h2 M+ T$ w3 @ /* Initialized data sections goes into RAM, load LMA copy after code */. a5 S" p3 m1 [
.data :
* A( _/ ]9 X/ q v {
' V9 b1 \0 X& P' U" U, x2 d . = ALIGN(4);
! u3 u# W# S) Q6 x! v& C3 o _sdata = .; /* create a global symbol at data start */
) x% W4 e' @0 T p *(.data) /* .data sections */
# x/ u3 Y0 I+ `% ]9 Z3 ~ *(.data*) /* .data* sections */1 C. I Y! Y& ?. Q: f: N
9 L' j$ |( a \; m, N . = ALIGN(4);( |" G9 o, P8 V) h5 [
_edata = .; /* define a global symbol at data end */6 `' \/ O1 c$ g) @% C7 t% U
} >RAM AT> FLASH_1
! N6 P5 r) [8 Q: m) E2 x
# A- k+ r& @# e' |2 U \ /* Uninitialized data section */" q( T A7 v" D2 _5 N& g
. = ALIGN(4);
6 P7 F7 h- A5 Y$ X. Q .bss :, U$ v( F: U9 n
{
! _! c5 j$ v8 Q# x /* This is used by the startup in order to initialize the .bss secion */
$ x& M# j9 l5 @; F _sbss = .; /* define a global symbol at bss start */0 G3 f8 h) a5 [0 k) W2 Y3 J
__bss_start__ = _sbss;3 H+ l) U7 w6 i3 u$ F
*(.bss)
, _5 U3 M/ S# S9 _$ k2 ~ *(.bss*)
( h3 @' g" R8 ^5 `3 a# Y *(COMMON)
% c7 l- x0 D& F# m) o" |( {, e( [; d q; F
. = ALIGN(4);* N" s# x0 B9 h5 [" R( @4 r4 {* A0 {
_ebss = .; /* define a global symbol at bss end */
8 E' j7 Q( u8 v! y+ C# E; \ __bss_end__ = _ebss;+ X- P- d% O# h
} >RAM/ t$ B8 K. T c7 S2 E' B8 e; Q) \
7 u: ?! ` i/ K- E7 C /* User_heap_stack section, used to check that there is enough RAM left */3 T* J @* C* b9 s' m
._user_heap_stack :
5 \5 d( a6 x- c9 [ {, B+ X# b6 \5 f. l: i Z& t
. = ALIGN(8);
' A0 f' c+ c5 \5 X5 x3 ]! g PROVIDE ( end = . );. B1 U7 x5 J6 y' j" d L
PROVIDE ( _end = . );: s" z* x) r8 Z8 r- [. ]- l* d
. = . + _Min_Heap_Size;5 O; D% n$ Y) Q% V
. = . + _Min_Stack_Size;
* N& l7 ~ n2 j$ L . = ALIGN(8);% ?7 g1 x- q8 _4 `3 _1 X" l
} >RAM
: d* a& ~" f! g& c% \2 K$ a$ r% a% t" J2 P
2 {9 E4 g: W; ^6 q# ?0 x0 P( D8 n. t: c2 K: ~2 \7 R2 @
/* Remove information from the standard libraries */! f0 p! t& a+ [* `' `. V
/DISCARD/ :
6 D% ?3 t* e( X1 \/ U6 z {
% u5 p! H- J' J! @7 q. N5 Q. { libc.a ( * )" O4 h0 w4 X$ Q9 I9 ?. Q5 ?
libm.a ( * )
7 _3 D) U) P2 G) c$ f- L1 k" D" S libgcc.a ( * )* i% @, [ j4 U, ^3 X* w8 @
}
7 B2 l; W: v% i r/ ~) Q* i ~2 l/ P7 ?5 Y* ]
.ARM.attributes 0 : { *(.ARM.attributes) }" n- G9 {8 A ~9 G4 G9 ^% i& S
}5 i8 V0 \: c$ X$ J$ c6 G" h
5 ~* S' `8 N# k" K, n" C
附录2/ S7 t% V( A% D; N6 e
/*
2 Q0 u |+ |" g*****************************************************************************
7 i, s9 c) G- c4 I# V& ?**
& r* h( j3 X' q! R: v: M* T** File : AT32F413xC_FLASH.ld, X6 h; F" g8 u2 B+ |1 @+ c
**
: \' R9 J" a6 X4 @' J/ W( Q** Abstract : Linker script for AT32F413xC Device with+ d8 [5 b# O& Y m5 G4 s4 J
** 256KByte FLASH, 32KByte RAM
' n+ U$ a: t+ R$ U6 H. i" j, x**
: K. l6 I! ]$ ]** Set heap size, stack size and stack location according* d# E E! D9 X5 ~5 G$ B, i% A D& c" T
** to application requirements.* W4 i3 r# E F
**# U' ~5 \5 ~0 T; D. }% B
** Set memory bank area and size if external memory is used.
# J' Q% s, ?1 ]2 p: t- z6 T" {**
$ ]: E8 C, } U** Target : Artery Tek AT32% X! _3 _- G1 N' V% \1 f7 J
**
3 Z* ^8 ^; _( L: l' H** Environment : Arm gcc toolchain
# }2 o, _1 l, |" a**
2 p/ f& @% O: Z2 X5 }" n, p*****************************************************************************4 y) K }9 Z u
*/
1 j: g6 ]! P# N& q+ W5 l& s0 x' ~
/* Entry Point */
+ K9 R, b$ D0 C' cENTRY(Reset_Handler)7 q" [, t" i- U5 ]
9 A% i1 m1 x" ]
/* Highest address of the user mode stack */
8 I: z! X% w4 r( j% Y_estack = 0x20007FFF; /* end of RAM */
: i$ B; u1 i- Y' X* g, Z) t4 z2 b( r r9 p
/* Generate a link error if heap and stack don't fit into RAM */
z2 `( P7 P0 m) y% r_Min_Heap_Size = 0x200; /* required amount of heap */
" {% F. I0 J+ W$ m, i* @8 d' M' J7 S" q_Min_Stack_Size = 0x400; /* required amount of stack */
1 M" X, ~$ h G
+ i. F% B" Q c+ N* W' Q# y/* Specify the memory areas */& K! j! ^* _& n: A- x/ Q
MEMORY
5 r# S+ r. W) t) a# V{9 Y: @$ S6 ?7 H5 \
FLASH_ZW (rx) : ORIGIN = 0x08000000, LENGTH = 96K
* L, h# B2 }* c9 b2 Q7 @% r& e/ eFLASH_NZW (rx) : ORIGIN = 0x08018000, LENGTH = 160K
a& x y7 P6 x6 @) x# wRAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K7 q( z" H' }; p
}
B9 L2 o' @' v! ?: A) K5 x( `9 P. b6 s
/* Define output sections */
7 i$ D6 ^7 }; T/ F) ?2 W3 fSECTIONS6 l- t! O% a4 w) J
{
: `; b T! b/ M: r+ G4 n- ` /* The startup code goes first into FLASH */
6 Q3 M k8 j* n# I .isr_vector :" ~9 b4 z$ X: S0 o8 \- A( T& S
{( `$ b) z4 j) u/ v. [' Y
. = ALIGN(4);0 Q# T+ F1 Q. y: C
KEEP(*(.isr_vector)) /* Startup code */
0 T% A0 \4 W! s) g6 u . = ALIGN(4);1 X% ^. \8 t" w: V+ B2 j
} >FLASH_ZW# L( A( l4 o/ h' K& J4 _6 R
+ u% G1 `; v- k5 J" a .nzw_code :
0 N0 N& Z8 Z& q {( j5 M9 J4 `% J/ _0 N( K9 g
. = ALIGN(4);
% | Q- v. U4 ^6 ^*nzw_1.o (.text .text*);
+ u/ [3 M# w8 D, ]! E, r*nzw_2.o (.text .text*); W& m2 @% W0 k) R- H) @8 {+ W
. = ALIGN(4);, s0 {- y0 V9 V) p) g! P
} > FLASH_NZW- o, t& K+ [" Y' o. }
1 T3 J7 z- t* I R, I
/* The program code and other data goes into FLASH */
, p& \; f6 M9 K! s. I .text :4 E. c) V/ s O2 ?9 r' B/ Z
{0 @8 D4 V) G; p
. = ALIGN(4);
( \& \$ Z; |& ^& ]6 {; u- r( M *(.text) /* .text sections (code) */6 Q: n& O. L6 A9 w* U3 e
*(.text*) /* .text* sections (code) */- J7 X5 L) S( n0 z5 [
*(EXCLUDE_FILE (*nzw_1.o *nzw_2.o) .text .text*)5 O4 k C: y& M1 Y
*(.glue_7) /* glue arm to thumb code */- A+ l2 H r9 T
*(.glue_7t) /* glue thumb to arm code *// A. U# h- _; {2 B! h0 P: E! l
*(.eh_frame)1 j6 O& p. } \
( J! V3 | T) Z2 m2 y! T/ o: Q KEEP (*(.init))
7 Q$ }4 X3 i# N" T. W/ U7 d KEEP (*(.fini))
4 ^5 R4 {1 Z; F9 Z: _1 i9 z
" ]( }$ i6 J( [& f . = ALIGN(4);3 s5 _! z& F7 n+ T; O
_etext = .; /* define a global symbols at end of code */) u$ |' l( T! T/ o) l
} >FLASH_ZW
. [: _2 M+ d6 G7 Z! \' v$ @# r4 C& S) S7 Y
/* Constant data goes into FLASH */, T( V( b+ B1 ]# R9 O- O
.rodata :% M2 F9 l: G/ M- e0 s
{
6 ?, g' _, g/ T4 C! e . = ALIGN(4);" d4 B8 q3 j' r0 z) O
*(.rodata) /* .rodata sections (constants, strings, etc.) */1 u" o6 `9 P3 W+ B5 S* `! q1 J6 y
*(.rodata*) /* .rodata* sections (constants, strings, etc.) */ 8 }0 H; m* `' W' x( Q; O5 T
. = ALIGN(4);! _1 r! C4 p* }) z: T2 ?. r, \& }5 H
} >FLASH_ZW# [1 |, f# L; z" ^- \
( E2 P$ z* r( M% p+ i+ {5 J
.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH_ZW) q6 |* D: S3 O* r, a4 |
.ARM : {
' o8 m' k @* M6 `" G; t __exidx_start = .;
8 x! y5 p: D8 E1 K, D *(.ARM.exidx*)
8 \0 Y, |- |: ?, A/ h' V% j __exidx_end = .;
1 }% c/ n' s) V0 I } >FLASH_ZW" |8 \- V% V1 Q6 t; y" W: l
- O# g) m, H; p. y' a! V
.preinit_array :4 X [* O9 H7 S" L
{5 N/ B" N) i- n( @
PROVIDE_HIDDEN (__preinit_array_start = .);
6 |$ d! V" t8 A% h+ \ KEEP (*(.preinit_array*))
/ @4 K7 l8 e/ T2 M# ?- A# {" n3 y0 H PROVIDE_HIDDEN (__preinit_array_end = .);
( _7 E" A9 v: U3 ?2 r } >FLASH_ZW* i/ B9 ^% y l! q) j- F& w7 p
.init_array :& Z/ ]6 ]/ Q9 S
{+ X4 Z7 I7 k" Y
PROVIDE_HIDDEN (__init_array_start = .);+ y7 a" ~7 G6 Q }" L
KEEP (*(SORT(.init_array.*)))
& { J0 B3 @4 {- F KEEP (*(.init_array*))
7 Z, a# J% D2 Q, p PROVIDE_HIDDEN (__init_array_end = .);2 E* f% O& W5 U) E
} >FLASH_ZW- ]! v' X% T) y2 p
.fini_array :
* P; u# B) I% X8 C0 d) v {1 m: b4 U0 K5 c* x& ^2 g( z3 \% m
PROVIDE_HIDDEN (__fini_array_start = .);; N! J" z' |2 X9 ^9 V
KEEP (*(SORT(.fini_array.*)))
+ i4 _8 c; N) @. |" M) a KEEP (*(.fini_array*))
9 j/ |& T! I. @4 e PROVIDE_HIDDEN (__fini_array_end = .);: T1 j) K% \3 A2 X9 l- R2 C
} >FLASH_ZW: K. P; y0 Q; K
6 B6 w( x. M" L; T
/* used by the startup to initialize data */ s! U! k/ F9 u) I% J" C8 n3 q- B! C
_sidata = LOADADDR(.data);
2 H7 b" ~- |3 L) H
Y9 X' V- y! j( i8 b, w /* Initialized data sections goes into RAM, load LMA copy after code */
2 f4 R+ x- I9 ?* t$ E% F. U .data :
' n; ]- H. j$ W; k. h$ u3 o {/ J) t; Q. P) g* D! |
. = ALIGN(4);
! h: b$ @6 @: x# } _sdata = .; /* create a global symbol at data start */1 P) L+ P! j) x( ^1 O+ o: T- I
*(.data) /* .data sections */& |3 F- \6 \$ r6 J; z. V, r# a
*(.data*) /* .data* sections */
9 v7 L% J( g' _* O0 [+ n3 z0 p) @8 J& T5 w7 ?8 Y
. = ALIGN(4);
O8 }8 H6 P- o _edata = .; /* define a global symbol at data end */# Y5 A; Y* r7 \/ C' ^
} >RAM AT> FLASH_ZW! Z2 M7 _0 h4 h) a
. s0 }; o6 B) L K: p) w8 X
/* Uninitialized data section */# |4 b2 B/ b8 ]' j
. = ALIGN(4);
# |3 Y+ M& N- f+ t( o& P& j, q2 F .bss :$ f) m0 h; {3 \3 [. g+ _
{* _' Q" P; t* ~' L8 W+ D
/* This is used by the startup in order to initialize the .bss secion */
& {+ C, d& `$ [* G _sbss = .; /* define a global symbol at bss start */
& b Z+ b; C7 X1 d# J+ d3 b* k __bss_start__ = _sbss;
5 r9 q, |; T9 l' [" v+ d *(.bss)) v7 F4 O* H* P. V. n' |! d
*(.bss*)0 g9 O/ o( b8 z* q+ ~
*(COMMON)' k w! C" u) E9 S% A4 g5 f. `# o
* o$ l8 Z1 p6 m _0 m. F& J
. = ALIGN(4);
% F) {. k1 C Q% W9 ?1 T$ W: ~ _ebss = .; /* define a global symbol at bss end */
, C- Q# c# g/ k6 e) o: t& a __bss_end__ = _ebss;3 Y; [6 K! x6 q, K
} >RAM
+ Y6 z. X @8 L1 A5 B
6 c3 W: F s1 F /* User_heap_stack section, used to check that there is enough RAM left */8 e4 B9 ?0 _3 C5 U3 V" I; P
._user_heap_stack :
4 L3 j5 [) M" R- X {
; x& f& f& o& ]! u . = ALIGN(4);3 D7 H, M, z, E: s- {0 P* u
PROVIDE ( end = . );
3 g+ o/ n' K2 \4 [/ x PROVIDE ( _end = . );! H) H; W4 }% a( X- I& q6 L6 B
. = . + _Min_Heap_Size;
% M7 B' k0 w u4 } . = . + _Min_Stack_Size;
F! i+ N" I5 N& L+ p . = ALIGN(4);/ i( z% z' R) f
} >RAM7 n( S' A- E. H$ Z0 {4 T$ H9 V3 ^
) n$ O# ^* ?3 N4 G/ G9 r+ F
/* Remove information from the standard libraries */. m3 I8 O2 }4 P& @9 h! ^5 A
/DISCARD/ :
B0 V% O1 f% Q# v {5 C8 o+ ~$ n3 m8 @
libc.a ( * )
9 @ h9 a7 K4 H% y( c libm.a ( * ), w3 D7 `' }# ` p5 Z3 N. w* w2 y
libgcc.a ( * )6 @1 h1 E* _, }* K, ?' \' j
}
5 [0 P6 q {9 u1 @' }: {* _4 w& d) N! C- f: e. s/ \- H
.ARM.attributes 0 : { *(.ARM.attributes) }
, `$ W6 R, n# V}+ B5 G& v9 \1 Z4 \+ S
* o) @0 l% ?) ~% ]" t. Q" \
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