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Questions:如何在Eclipse中实现分散加载?6 y2 v, B% p4 l, r G$ F8 a
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) Z# `7 X, P0 _) MAnswer:, h: g. B; K& N7 u2 F6 Z5 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。
3 F8 P1 @3 X, t" C( ?, i, [- A
& l! V* S# E7 D8 x" I+ S1. 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。 7 a% S, O& q/ I
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2. 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:
* z" V c4 w6 k L* z' F* m2 r/* Specify the memory areas */: M1 i8 k) O L2 h
MEMORY1 Q4 W: X1 y3 `. U# r; t9 W, |
{
+ i3 y F1 o* J- g4 LFLASH (rx) : ORIGIN = 0x08000000, LENGTH = 256K- P- ^8 P- O1 Z" }* b
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K6 C! y6 l& s- q- B6 u2 v
}
( Y! K% W0 f7 v v. N. @" p( }$ ?/ T- W: p- d- O- V
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。* Z2 Q5 r! j* X. G" Z
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 o( K$ y) |+ u/* Specify the memory areas */+ H: U- |4 X. W
MEMORY
& v; M0 H; @ C& ]2 S{
2 I( d1 A7 R- b: @% l5 DFLASH_1 (rx) : ORIGIN = 0x08000000, LENGTH = 128K* N' S! i* z+ D2 \8 s0 Z, |# |
FLASH_2 (rx) : ORIGIN = 0x08020000, LENGTH = 64K, q& K4 `% }) v) b) F1 u3 C- \1 v
FLASH_3 (rx) : ORIGIN = 0x08030000, LENGTH = 64K
* e% B0 s7 L# p& G5 ZRAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K7 F; T0 u6 E8 t
}- Z) {+ D" P$ Q; _+ e# s3 k1 h ]
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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。. {2 Z& b1 Y) K4 _7 h
/* Define output sections */
: w: @7 M' N2 @/ q) ~( iSECTIONS
4 F6 u# [# u2 `0 M2 H{
5 D: n' B+ P/ s# s, { /* The startup code goes first into FLASH */
# k: E3 B4 ?% w6 ~8 r .isr_vector :
: ]7 H6 I* D O1 C+ w0 q {
( O, t' c# P7 h+ V" v; p" r0 P4 T . = ALIGN(4);
# n& ]! Y) g3 I5 N( Y: x; w/ q KEEP(*(.isr_vector)) /* Startup code */: M& U# Z5 J7 P, B7 o: [
. = ALIGN(4);. c4 y" n% x1 V( d) E1 g: p
} >FLASH_1$ Y, ^+ U9 O0 L/ C/ G; M+ X
4 w$ Z A$ {' x) L, W: ^5 T+ F .algorithm_code1 :1 B) E0 J* V' H* i4 P
{
( o- |! m7 k- |) v% y6 C. U . = ALIGN(4);
. q- j3 R0 I m *algorithm_1.o (.text .text*);0 [, [ ]; p* R4 b/ l
*algorithm_2.o (.text .text*);8 h# N+ K; |* ~ L9 k. y) E# c
. = ALIGN(4);% F# p0 }$ H h: y/ d+ m* c
} > FLASH_2
* I; D0 ^2 P5 ^3 K8 Z
4 n; D( {8 D4 B L+ c1 d .algorithm_code2 :, f# h7 [: K* @6 y
{" q% E# v* g: W: d3 q. }
. = ALIGN(4);0 n7 W8 A: r! C+ o
*algorithm_3.o (.text .text*);
7 I7 Q* o" i) e. g1 e *algorithm_4.o (.text .text*);
# v' G& [' g# s S7 `5 { . = ALIGN(4);; j' m6 _8 A8 s' ]1 ?- t% x
} > FLASH_3- s1 y6 D/ d. p4 K/ E+ M1 f0 ^- O
& t% d- \ i2 ]: R8 U& g- T
/* The program code and other data goes into FLASH */3 I2 n8 W4 m% W f V$ G% \
.text :
: I7 T3 k* @+ T# a5 q {& Y+ u+ p/ e- N% |2 s
. = ALIGN(4);
% f% O/ c4 b/ G/ m" B$ W0 `7 e+ b. G *(.text) /* .text sections (code) */: c1 f2 K# H1 R+ d
*(.text*) /* .text* sections (code) */- b) [* B; M: u3 [0 h
*(EXCLUDE_FILE (*algorithm_1.o * algorithm_2.o) .text .text*) 4 N' i2 @$ i* C9 o) _5 d1 U! I1 A
*(EXCLUDE_FILE (*algorithm_3.o * algorithm_4.o) .text .text*) 2 g. z9 L3 v& k5 Y$ G1 W' G
*(.glue_7) /* glue arm to thumb code */
8 B2 Q) X" J' i A( j *(.glue_7t) /* glue thumb to arm code */
( N0 J6 |9 R& e( H* I0 M# b *(.eh_frame)
* F# a B4 [9 j/ Z, I& E KEEP (*(.init))
. m( n& j; F9 c* D" R G KEEP (*(.fini))
1 q4 M/ a! N3 x . = ALIGN(4);0 I# J$ j7 p$ r) ]
_etext = .; /* define a global symbols at end of code */' C3 _ t( z# U6 t. C
} >FLASH_1! V! p6 s: s: U% [; W! {6 ^! z
2 {$ E2 I! p1 Y1 b. a) M4 y" R* i; Z
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。* t) h% j9 y$ l+ ?- Z! _
注意:
: q; N. N* f9 ~ s1) .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;
, S. j$ ?9 p6 I2) .text 和 .text* 是可执行的代码;. {! E# B! d$ c' G; T/ c
3) section 名称后的冒号与section 名称之间要加空格,如:.algorithm_ code1 :。4 R4 W8 D8 Z' Q" J9 m4 _) B
2) 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。
- n" m$ ~8 S2 B x, w9 k9 O) G) z# B3. 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。
& h9 M \$ e. d: t, h/* Specify the memory areas */; A; O$ @+ q' d8 Y( S
MEMORY3 {! {* H( F4 a3 l7 X+ s
{* Q- V* l% V' I
FLASH_ZW (rx) : ORIGIN = 0x08000000, LENGTH = 96K2 Q0 A d) U& B. d% r+ ^8 Q
FLASH_NZW (rx) : ORIGIN = 0x08018000, LENGTH = 160K
, N; B$ W! E( N/ o' d( v' m7 aRAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K4 u8 d: c- H7 |/ A+ Z9 N' o
}
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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。# u3 [; ~' w! o: p1 x2 x# [' U
/* Define output sections */4 p9 N7 k! @ U. F( c
SECTIONS
7 J R2 o) T* E. l/ K( j8 t4 u{
0 J* k) |9 X7 D. o /* The startup code goes first into FLASH */
9 Y8 K! B9 V4 z* n .isr_vector :
+ T) v; T8 b7 }" @2 e1 I {
4 k. m T6 r7 P! J . = ALIGN(4);
' O0 ?1 i/ I9 [; ]' V- E7 _6 Z: A KEEP(*(.isr_vector)) /* Startup code */6 q% P$ k; g) H3 J7 F* J% R
. = ALIGN(4);0 b' A ^% r" {" J
} >FLASH_ZW
9 _) f9 F5 D/ t4 [2 |' ]0 F3 @! [) ~0 @
.nzw_code :
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. = ALIGN(4);' P. ~: h8 U- k+ b# C/ H
*nzw_1.o (.text .text*);) C8 j- v7 r4 I. m3 B5 p$ z
*nzw_2.o (.text .text*);1 p e) {5 S9 W6 W! P' E" ]
. = ALIGN(4);
) ?* H( {+ |( `" y6 C1 f! r: [ } > FLASH_NZW & D) @ g' n B; w r+ Y& }
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/* The program code and other data goes into FLASH */7 R) D& e2 y6 t. F) |: P* K$ n& ~
.text :8 k: [" Z4 z: Z
{
! e8 Z' t$ m" u& h, q . = ALIGN(4);
9 a/ N) d2 k7 J *(.text) /* .text sections (code) */
0 g' S, `- N! y$ A/ ?" W% w *(.text*) /* .text* sections (code) */6 t/ ~# `8 Q7 L
*(EXCLUDE_FILE (*nzw_1.o * nzw_2.o) .text .text*)
2 t0 I; [" Q; N1 I- { *(.glue_7) /* glue arm to thumb code */: d9 B- Y+ ?% e; [3 u1 {
*(.glue_7t) /* glue thumb to arm code */: G2 O4 a5 q% ~( o1 d
*(.eh_frame)) C7 l9 |4 n6 j) C; n R/ c) L7 ^: G
KEEP (*(.init))
: \ i5 ]5 J( I0 e2 H3 w KEEP (*(.fini))) U6 _) D- `' Q, Q
. = ALIGN(4);
~$ Y) t3 y* e1 u _etext = .; /* define a global symbols at end of code */
, e0 l( ~ b. D. `3 |4 k } >FLASH_ZW
0 f9 e# I+ W1 @1 P" z! A& r/ B7 q: @2 h4 K% L: q& j
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。9 C- V% H% Q# A2 f
注意:. M% N1 [; ?* a. 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或数据都编排进来;
& C. \2 ]4 w0 r1 m: A2) .text 和 .text* 是可执行的代码;( F h/ C+ R' O" Q9 u0 F
3) section 名称后的冒号与section 名称之间要加空格,如:.nzw_code :。5 ^% J4 ]4 W N( i% z* `' k, a; s& u
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。
% g5 W" Q& b9 q# l! R, E3 H& u, r6 h8 a/ Y: g% m2 Z$ \& Q/ ~
附录1- Z# }! d8 T! i Q
/*! R0 X* n/ j) N8 t C' J! J
*****************************************************************************
' `# g& g ]2 v**
( T) T0 j" l' L/ r9 K** File : AT32F413xC_FLASH.ld
8 W; }& N2 o; w' \**4 E7 y* N2 r/ i2 W
** Abstract : Linker script for AT32F413xC Device with
( }- n$ S, B4 y** 256KByte FLASH, 32KByte RAM
3 M3 X3 {+ {2 z4 ^**( R+ C4 o9 L% e0 _
** Set heap size, stack size and stack location according
; k8 a" r$ m' O% L: R# `** to application requirements.% K' B% k5 T F7 V
**) k `2 T* A+ M, z; {6 t
** Set memory bank area and size if external memory is used.
3 G" }8 f3 l, H**
% K5 S: g/ h q. o) s! G** Target : Artery Tek AT32
) u2 `, {5 z' T3 t7 a- ~: j**
0 B6 q& @" O: L9 l" e** Environment : Arm gcc toolchain
( r0 l7 b- I0 ^5 e" `6 M5 ]**
3 l' I5 g7 D: D, R+ D, s" |1 I*****************************************************************************7 a5 N# k4 |, h
*/6 p( k! V% M( K% j/ w4 @4 ~& W
/* Entry Point */, C6 c+ h( {. }* ^% K& L
ENTRY(Reset_Handler)# r+ K' `# B( t( _4 y1 r
1 Y+ s3 @- W3 q# Q/ [) D& B* I. E5 V6 `/* Highest address of the user mode stack */
! L! v1 T8 X. S* k+ k. e2 d0 j_estack = 0x20008000; /* end of RAM */$ u8 r# v' f& V3 D, t. h9 q' a
0 A$ X4 j6 N3 V' S5 w8 X
/* Generate a link error if heap and stack don't fit into RAM */' Z( P$ z% u! A; F M
_Min_Heap_Size = 0x200; /* required amount of heap */
; E, u! ] u' l% C3 B( m3 ?_Min_Stack_Size = 0x400; /* required amount of stack */- r% t# ~8 w( i
4 H- v' l' C. L. W/* Specify the memory areas */ \3 q* [5 z9 D% B' c ^4 o2 \# Q) A
MEMORY- x2 ^" G5 y# f6 \4 {0 U: c
{$ R+ a1 h7 ^+ y* E( x/ N9 |
FLASH_1 (rx) : ORIGIN = 0x08000000, LENGTH = 128K
7 X2 t& n/ J1 f9 s$ _FLASH_2 (rx) : ORIGIN = 0x08020000, LENGTH = 64K. W+ s3 p5 U$ _2 W; X, ]/ Q. [" v* Y
FLASH_3 (rx) : ORIGIN = 0x08030000, LENGTH = 64K
$ L8 s: R, A0 rRAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
' j5 g1 u3 H& Q2 m5 a}
5 ]7 @4 D. w& h1 i5 `. i$ o& z' k- K. Z
% [( P1 h N# N3 `/* Define output sections */
0 B' d( s/ F8 S9 GSECTIONS
7 A8 j- l# h4 b) z8 m, s( ]{8 X+ [4 r7 G6 j2 E
/* The startup code goes first into FLASH */
9 Z {9 @0 E7 e- q' m0 L .isr_vector :- }6 Q/ o6 |! U' `* U
{5 N, P7 f& S( i7 | Z% H C( G8 J
. = ALIGN(4);) h0 y( U s! D1 R3 J1 k
KEEP(*(.isr_vector)) /* Startup code */
% a3 U3 Y2 {$ Y. x6 P . = ALIGN(4);+ i6 g# L: k6 c5 q% x
} >FLASH_1
, R1 }/ n) \, \6 I! Y8 U+ N& m
% W( K8 H5 T# I a' S .algorithm_code1 :
9 f; v, ^& w: c. d+ _ {
$ p. q! T! ~+ _ . = ALIGN(4);) _- W+ W, B" o' P
*algorithm_1.o (.text .text*);
% J, |6 r! Z9 S *algorithm_2.o (.text .text*);
1 c3 ^5 |" ~; A: [7 |, s . = ALIGN(4);) L3 j v- r' {5 @
} > FLASH_2
) ?2 S* @+ F+ t O: @- t" Z
5 o/ W9 f1 ` t/ O/ Y .algorithm_code2 :
+ J$ G! @3 A) i7 V" U+ V; i {
V) M5 F, B3 x' f. h . = ALIGN(4);8 W2 W4 n$ w" a1 G" _+ D! Y$ j
*algorithm_3.o (.text .text*);
6 G( l; ^4 N. |7 S4 q$ N; R0 t *algorithm_4.o (.text .text*);
) @% U t7 F8 `, B( X- P: e d& | . = ALIGN(4);
- W' l7 O$ o: `5 | } > FLASH_3 ! R6 N4 F% O. s8 N1 |
, w3 } P' `4 i B. k /* The program code and other data goes into FLASH */
" q7 |5 v1 ~% F) o .text :
) B& l# j7 ~3 H) ^ {# J2 x/ Y6 `5 y
. = ALIGN(4); # A$ a) S8 ~ Q
*(.text) /* .text sections (code) */
0 l; x$ k! O1 ~/ o *(.text*) /* .text* sections (code) */
! M0 Q+ _$ B% P9 \ *(EXCLUDE_FILE (*algorithm_1.o *algorithm_2.o) .text .text*) - Z; L) D( b" z* T
*(EXCLUDE_FILE (*algorithm_3.o *algorithm_4.o) .text .text*)
, @/ W3 q# D, x- h% W. E6 L *(.glue_7) /* glue arm to thumb code */
% c7 ^1 h4 E+ ?" j7 _# W' u *(.glue_7t) /* glue thumb to arm code */
" ~1 }6 k: Z! b+ G# p! ~9 @ *(.eh_frame)
" b, j, t( O1 s KEEP (*(.init))
9 H% ]3 z$ q% |2 N( F6 A+ ?& V KEEP (*(.fini))
8 F7 Z% p* W$ U. P; o; j9 Z; ~" ]; n$ n, _1 N/ D
. = ALIGN(4);$ R# z8 ^$ s% s1 d' d( |8 i) V
_etext = .; /* define a global symbols at end of code */, W* {8 h2 g5 [4 h7 B" V
} >FLASH_1' T5 {6 m9 a. w' C/ v c
( `; t; Y! C, r' V2 n8 l; v /* Constant data goes into FLASH */
( N6 c3 K8 M1 |2 U .rodata :
4 R' e' ^; g K9 {) m! t; f {8 M* @+ S" I( y7 M" N0 N3 e& O
. = ALIGN(4);$ B; z5 F4 C) V# @" V5 q) [* m- `
*(.rodata) /* .rodata sections (constants, strings, etc.) */, j, E0 T1 |9 F$ Q% L- {
*(.rodata*) /* .rodata* sections (constants, strings, etc.) */ ; P. q# \1 i& A8 t
. = ALIGN(4);
; Z- `; n. f& V. _% D# r } >FLASH_1
0 N I" r+ [9 c2 I5 O$ s* ]* i3 q9 ?6 t* m% A, L2 F1 {% d
.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH_1
& r9 L- D" X H+ N$ v; H7 N/ O .ARM : {1 E: k6 ^0 x6 u3 `
__exidx_start = .;
7 ]2 y* y; N0 k+ Y6 ] *(.ARM.exidx*)
4 y( F) E* A% z8 y$ J7 g __exidx_end = .;5 }* k8 w# ], r
} >FLASH_1
, F5 i# O' y0 a- j! ]1 s2 D4 M& r0 O. c4 d% t
.preinit_array : s. Q. u- D) i/ k7 I- ?7 m
{: _+ n; A e4 s: F7 \: k
PROVIDE_HIDDEN (__preinit_array_start = .);, r" i8 q+ {3 t/ B8 _8 I: Y2 J
KEEP (*(.preinit_array*))1 K" t8 Y* M9 e* P3 p- N
PROVIDE_HIDDEN (__preinit_array_end = .);( r: l6 O0 E5 D: Y& z
} >FLASH_1
& T; T5 @1 ]' I0 T4 V
1 V' b R) S' C' L: A7 e2 H .init_array :- J+ j a( z1 V2 {
{7 ~% O2 o) g- v# y6 l0 s% s, X
PROVIDE_HIDDEN (__init_array_start = .);
& ^* F0 R( }' U" a; c B KEEP (*(SORT(.init_array.*)))$ C! G& n2 W1 v4 b+ d* E5 |. T
KEEP (*(.init_array*))
4 N# n* }" V$ x PROVIDE_HIDDEN (__init_array_end = .);% @2 u4 k6 r D7 n: v8 O, `# {3 S
} >FLASH_1! t) _) y1 |1 W ?2 p- Z3 j
( N2 t$ p6 R! V1 t! i; C" \$ U
.fini_array :
6 [" c' {) H0 E& y! I7 K9 t {9 w7 {0 G2 ~* ?$ p
PROVIDE_HIDDEN (__fini_array_start = .);
- C# _# t6 h* }- \) f2 S& W& t KEEP (*(SORT(.fini_array.*)))
: n6 z: S6 I/ l9 t! b# l KEEP (*(.fini_array*))7 q, t* L8 Y0 W
PROVIDE_HIDDEN (__fini_array_end = .);
0 O6 p' Z7 v, t+ q. n- w% B7 V } >FLASH_17 }7 `. T7 _: @5 j
6 }$ m4 y6 n1 I. v; {. q /* used by the startup to initialize data */
; |0 F, ^6 U7 Q/ c6 \2 h _sidata = LOADADDR(.data);
3 G! t) E1 O! H2 O1 m M" M/ J0 F6 Y$ U3 D$ ~8 _6 w2 Y
/* Initialized data sections goes into RAM, load LMA copy after code */
4 U. L. ^/ W' U+ S" G; M .data :
/ {: O( J+ i0 K; S* s! X {* d- v' W' Z h$ p) A. n$ w
. = ALIGN(4);
! H' X4 W" X- C1 s+ `5 _/ h9 f _sdata = .; /* create a global symbol at data start */
0 ^# Q. ^" m6 `7 _8 L$ H( _ *(.data) /* .data sections */
" M6 W/ `4 s: A. h *(.data*) /* .data* sections */
& V6 U. p& _8 l6 I5 r( ]9 S+ m
( c" H) A* C6 l& A# L/ ` . = ALIGN(4);
6 X% f7 F$ ?) Q0 A% G4 n2 ]% ?5 l _edata = .; /* define a global symbol at data end */, ^3 y% s0 L; H5 w
} >RAM AT> FLASH_1
. Q; ]5 u; t+ v, P/ ?: u/ ] k+ d
5 V- W$ c) E! i, A4 y /* Uninitialized data section */" j) \( W, A* P- }
. = ALIGN(4);2 G+ d5 r- g% H1 n. n: b1 E% u
.bss :* W6 l0 t& [4 k/ {* F0 I- C
{1 Y9 [7 r3 ?4 T4 H4 b
/* This is used by the startup in order to initialize the .bss secion */
8 Z: a) Q! ~" N. V$ F _sbss = .; /* define a global symbol at bss start */
7 b; p- S5 j! x$ N5 h1 i __bss_start__ = _sbss;/ r( Z8 R4 Q/ P1 x. G+ w# ^
*(.bss)
1 N9 {1 X( }' m' G- m9 } *(.bss*); `- Q- m9 J( d) \
*(COMMON)
7 P# l3 O! }. w6 a" c7 H
: b% g) g! m9 q' T . = ALIGN(4);
% z1 y+ B: `9 R# p1 ? _ebss = .; /* define a global symbol at bss end */
7 n& y' F! D" {& n$ [" D8 P __bss_end__ = _ebss;1 H6 c3 n1 d2 W) ?" H0 B9 A% R* J# }
} >RAM$ n9 B# q+ P4 S3 s
1 P* H8 w: t3 X1 k7 [ /* User_heap_stack section, used to check that there is enough RAM left */8 ^+ B# b' o2 ~$ H: N* c2 o
._user_heap_stack :
; s) U2 p1 |( y: y {8 e+ g' b9 L( Q
. = ALIGN(8);
0 _7 x5 a2 m" v PROVIDE ( end = . );; `3 E. D* }1 Q' o: |7 {" F
PROVIDE ( _end = . );
/ ^9 q2 i2 P& i- b. p a, i* \5 M . = . + _Min_Heap_Size;
" ^8 z7 p I; z . = . + _Min_Stack_Size;: A+ r0 O$ f* t* Q
. = ALIGN(8);+ H! B) {+ f* _6 k- l, S; a/ s
} >RAM
+ u& Q( U4 C' `6 a& |3 Y* s, |+ S" y) j; a0 d
. l4 C/ |! Y: w R) B) z/ n3 h
' N, t/ S0 d7 O% L5 d /* Remove information from the standard libraries */
4 q" W! n: P$ D) A0 z /DISCARD/ :- s' H6 B1 K5 q. N! [- a
{
3 Z5 c9 z9 w/ G! L5 O+ N libc.a ( * )
, b* ^' f& M/ G2 J2 a* Q3 K3 l libm.a ( * ) # q& ^& O @& v0 H) M" M, l* A
libgcc.a ( * )
* d. B( O; Y5 Z }. J5 B. e9 i5 c
- u. K( }6 B, @+ i8 V9 y .ARM.attributes 0 : { *(.ARM.attributes) }' P+ Q( p8 b: A( ^! G4 ], s
}1 K& X% Q6 p- o0 G) ? e; I7 M
- O, {6 g1 g# V附录2
' z7 H, a$ _5 n( ^' w/*
$ K4 m I- u+ g3 S1 N3 l*****************************************************************************
8 ?4 g1 c# H2 C6 I**
+ ^' V2 K9 M2 m% v ?- W8 ?** File : AT32F413xC_FLASH.ld
3 A/ a$ r# C- m5 h) d**& }/ S7 `$ F7 l, ~$ L; R# T
** Abstract : Linker script for AT32F413xC Device with3 ~$ X( o" v7 `( D
** 256KByte FLASH, 32KByte RAM
4 z. z; A, H$ s8 K: q7 q. ?*** V8 z4 l: m& @2 m+ q w( h
** Set heap size, stack size and stack location according' X% [* `5 o7 J( N( n
** to application requirements.' v8 S# `- t7 B/ w
**/ `* [1 x% Z# Y8 p' d7 g
** Set memory bank area and size if external memory is used.! Q: Y; s( T1 c
**! l9 l Z# E8 X q# I8 F' e, h
** Target : Artery Tek AT32
* w2 w% O4 t: \% t4 _**8 ]9 c, `( [1 Z' k" A3 n
** Environment : Arm gcc toolchain+ g' w0 Z3 U4 Y: c
**
5 ^ ^0 Q; n8 N \% r*****************************************************************************
, }3 j- V% s8 F M7 T+ L1 M6 |*/
, l+ l. t; S3 L6 V U8 X$ V
3 D. e4 ]2 T( H" w n6 ]/ j' Y* K/* Entry Point */ Q$ v- n6 }( U! Z: i# Z; p# ~& I! a
ENTRY(Reset_Handler)
2 d M, @8 J: {3 t
6 Y4 U! [, E. l- F: N" j( V% k# z/* Highest address of the user mode stack */, A1 K. }5 d8 V
_estack = 0x20007FFF; /* end of RAM */
- L5 [2 g1 H& ]. {4 ^+ F% l: p8 D& G3 q1 h; F0 X
/* Generate a link error if heap and stack don't fit into RAM */9 y1 G) l* D) W4 `' y: v5 k
_Min_Heap_Size = 0x200; /* required amount of heap */0 [% p, G+ R b# M9 ^* {
_Min_Stack_Size = 0x400; /* required amount of stack */$ C& t1 ~* [' S' D1 _+ c5 i% D
4 g. N3 f& k+ X3 t5 h2 {: ?7 P# r/* Specify the memory areas */! a# i' m5 K! m& ?; B- b! m3 ?8 l
MEMORY' h; s* W2 i7 o' w6 {' k' G
{) a" z5 ~( s2 q
FLASH_ZW (rx) : ORIGIN = 0x08000000, LENGTH = 96K# f: i$ m4 v* Z2 q5 V# e/ E" n
FLASH_NZW (rx) : ORIGIN = 0x08018000, LENGTH = 160K
8 ~. m+ j* k! a/ Y/ ~4 |2 }RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
{/ ~5 L1 m. _4 |}" {7 I) |3 e9 Y% Y- T/ D
) h* o- z: `9 y& ^% N
/* Define output sections */$ g3 S+ B, {6 ~6 k2 ?
SECTIONS* |9 \6 V! \& w6 v, @. ]& r7 I
{$ g! O5 ]& y/ ^. U- h& H
/* The startup code goes first into FLASH */3 ?' a5 J0 N2 Z; T1 r+ u
.isr_vector :% C8 Y# t, u1 L; t# x
{1 s! N1 S! O/ Y* z0 A& K) n" x4 M7 J
. = ALIGN(4);
* o- u+ P2 T5 ?" | KEEP(*(.isr_vector)) /* Startup code */
: ?& n H, F0 W8 N) Z . = ALIGN(4);6 m7 S3 `. p& R* N* |
} >FLASH_ZW8 K3 ~4 g# T# T* Z" E% Q
4 E. W- I, ^! a6 @
.nzw_code :) l2 [% X- {1 z) A8 }1 t1 b0 M
{
5 ]$ c* e% f f; A6 I% M. v . = ALIGN(4);* m) S2 G7 R; `' t
*nzw_1.o (.text .text*);
\; w# P' O# |$ z1 ~0 v2 Z*nzw_2.o (.text .text*);! H# g' b& a7 Q: e; O
. = ALIGN(4);
" a9 d( c G# i/ g } > FLASH_NZW" h; f& ?: ], Q( P+ z
! e/ U7 @" n8 t3 ] /* The program code and other data goes into FLASH */
& X( u# f+ @- M, o' j+ b .text :' o! F' {- i- Z
{
) H* [ A# N# G . = ALIGN(4);4 v, x5 p+ ?# v3 \
*(.text) /* .text sections (code) */; p# J2 p, `6 C" c/ {" t7 Z9 e
*(.text*) /* .text* sections (code) */
& h" I3 ?/ Q. Y, j" F+ Y *(EXCLUDE_FILE (*nzw_1.o *nzw_2.o) .text .text*): Q5 |5 t: Q/ s% S& x9 |$ K: s
*(.glue_7) /* glue arm to thumb code */6 p+ F7 C- I! s& Z
*(.glue_7t) /* glue thumb to arm code */; `0 P# w2 |7 }: l5 {0 R+ i' `
*(.eh_frame)
% ?+ \4 A5 o5 {
; C. m8 ~. v% ^% J: T& Y8 c KEEP (*(.init))* c/ ]" A |' T% @' A2 n( S
KEEP (*(.fini))
" I0 Z) H- ?* s* ~2 T7 Y3 I% D) {
. = ALIGN(4);. V3 _( ]( H" D1 V5 O
_etext = .; /* define a global symbols at end of code */1 c( ]* ^- `) Y/ n
} >FLASH_ZW 9 W' B6 B2 x# f0 ^/ {6 D% x- E
4 A+ Z4 ~6 a- C! T( H v /* Constant data goes into FLASH */9 n# x( ^! @' L( Z& T
.rodata :
+ k$ z9 h& R# k6 N X7 } {
, ]3 M% V: M( i6 s . = ALIGN(4);
- M- l4 a% O; E# A1 D+ J *(.rodata) /* .rodata sections (constants, strings, etc.) */5 p+ d* O- M% J+ P
*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
8 w2 d4 I: D* G& z . = ALIGN(4);( T1 h, U8 t$ t& F) f" `
} >FLASH_ZW
% _1 E8 a( n, y( x' a8 {8 r2 R T( o% r5 ]4 p- b
.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH_ZW9 ^, K8 ?+ C5 l4 Q2 \) M: P
.ARM : {/ w, r8 Y/ r& ~) a6 Y$ |
__exidx_start = .;
: q) T% q- z( c' U, e( Z, g *(.ARM.exidx*)1 e8 E! E9 t$ B' _" S
__exidx_end = .;
3 c# U" l5 n, [" Q } >FLASH_ZW
# R6 x3 T- {) [% ~0 F% m" l- ]- A& s4 i6 y2 Z
.preinit_array :
/ k1 ~2 P$ Y8 r9 x& i {' V/ t' I8 U8 [' w; q
PROVIDE_HIDDEN (__preinit_array_start = .);
/ q. l/ M1 }: G3 J, D5 b( U KEEP (*(.preinit_array*))$ g/ V7 V: P4 @! r6 ?. [4 H
PROVIDE_HIDDEN (__preinit_array_end = .);- ] k8 k7 v4 v$ [7 P/ Y/ I
} >FLASH_ZW
' l4 C# W5 [7 k- O8 @& O% r .init_array :
& ~1 ^* |) j! j& J0 B! w5 K {
6 z3 b. w& Q% Q PROVIDE_HIDDEN (__init_array_start = .);
8 R& H0 M3 w' A4 n; g' b5 | KEEP (*(SORT(.init_array.*)))
* A: M; E: N5 ^6 d' C/ ~8 H+ K KEEP (*(.init_array*))
. c) v9 v6 { k. S5 Z @ PROVIDE_HIDDEN (__init_array_end = .);
; t) ?% J& Y( I+ k# I } >FLASH_ZW0 J5 y$ k9 W% E- o! O; i
.fini_array :
2 X2 u8 N; h6 m& u" t* X$ p2 o& k {
H/ W3 W& O& v/ O- S PROVIDE_HIDDEN (__fini_array_start = .);1 N* I: B. | C& I1 U: O
KEEP (*(SORT(.fini_array.*)))3 Q" ^- [! a0 S7 u; V
KEEP (*(.fini_array*)): n2 O' T6 A5 S9 y- }1 Z
PROVIDE_HIDDEN (__fini_array_end = .);
l7 s* a: |% t9 ?, B6 @ } >FLASH_ZW
. L) U U5 A" y+ ?6 F6 `% _
- N2 h: T, y. N, H /* used by the startup to initialize data */% m' p1 h% C- ^
_sidata = LOADADDR(.data);
, v" j0 V S' u' }( G( S/ t s4 E" f3 E" _4 g
/* Initialized data sections goes into RAM, load LMA copy after code */
5 h+ K) l) K) j( D/ y6 a .data : 4 k4 N+ }' Y: K) W% V* L
{
* m, J/ q9 t6 ~* G4 F( s . = ALIGN(4);
+ \% ^7 D) p* F# [5 \, g3 U _sdata = .; /* create a global symbol at data start */$ T5 X: u/ s3 S( Y. u8 H
*(.data) /* .data sections */5 s6 O4 `8 ?5 y. E# H
*(.data*) /* .data* sections */' g# k+ ^. u) R- v7 s- |1 L9 h
4 z) O" j! U$ X+ J
. = ALIGN(4);7 X5 _& [- a9 C; \/ E2 I6 V# `6 r
_edata = .; /* define a global symbol at data end */
! a. s% M2 L- |- R4 a6 @- B } >RAM AT> FLASH_ZW( q! U: B0 ]. w V( ^
7 e2 n* P/ M% Q q" k. V
/* Uninitialized data section */
, M" {" ?8 Q% @! f& }6 b5 P3 ? . = ALIGN(4);
$ }9 u8 y7 @& E8 S .bss :
* I' _- B/ q5 h3 u. X: q {" ?# k1 Y( p5 U% W8 F
/* This is used by the startup in order to initialize the .bss secion */2 u; O! Q% m" Z
_sbss = .; /* define a global symbol at bss start */
; Q' @2 n& }/ G6 L! E4 K6 K9 j __bss_start__ = _sbss;
$ k! _& H' P; Q( N *(.bss)
5 D. M4 X9 h5 M2 B' w7 G1 C1 K4 p *(.bss*)
& E0 x$ Z5 r7 _ *(COMMON)
' l- B' y8 e% \! ?' T5 l3 U1 W0 j
3 E" q' `+ [# G; A6 a {5 j/ r . = ALIGN(4); l$ B% K( W) l1 I, u
_ebss = .; /* define a global symbol at bss end */; S2 S4 R. j2 C- n. ~& o
__bss_end__ = _ebss;% f1 G# w, a% Y) L& @* G8 L
} >RAM6 p/ V* ^% z7 O
, n+ Z6 c, Q X /* User_heap_stack section, used to check that there is enough RAM left */
) k, L0 A$ c& G+ p* v' q ._user_heap_stack :
' r# G: p) \" ~/ u# P' n5 V0 M {
o, B. k9 C2 i' `, H . = ALIGN(4);1 n# O" k7 R% S
PROVIDE ( end = . );
! `) c+ h U) p PROVIDE ( _end = . );
) n2 i# {* F. Z/ `- W& u: u p . = . + _Min_Heap_Size;: B- l$ ^! J! y) r- s+ S; j3 ^
. = . + _Min_Stack_Size;
, L( N8 m* T8 ?- j0 [) K . = ALIGN(4);
2 a1 w8 O& E S9 ?$ n; V9 P } >RAM
7 O2 n5 h# ^0 e
0 M& Y6 r7 P* ~! Z3 ` /* Remove information from the standard libraries */9 h- C2 h/ ]7 `; q- S
/DISCARD/ :# o9 c4 D" D o8 T- m: g
{+ V+ s4 Q+ @3 n* n# v4 { I/ U
libc.a ( * )& |6 |6 Q2 E% N( b
libm.a ( * )1 R9 h' c) C; b. f
libgcc.a ( * )9 H8 s7 [5 o0 ^: T0 d3 j5 ~6 O- b9 [
}
3 k& \6 F; t- V8 M( D5 s: l3 `# e) c+ F1 z% o
.ARM.attributes 0 : { *(.ARM.attributes) }
' J% q9 d6 L: `7 O9 g! N}
# B# @) B8 t; r! _" B! O, H
) Q# S6 t/ Z1 C! l5 H, F6 ~$ O& T |
|