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Questions:如何在Eclipse中实现分散加载?0 q8 w- _9 S" t z6 E
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5 B$ ^) c' S) H | cAnswer:/ h$ [1 r: v" i; c7 N$ v( Q
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。
: q# K+ a& C4 k) J y8 b4 } : a+ ]6 @5 i; T! \5 P' W
" ?% T4 C9 E: @7 t* h* h- ]4 M9 ~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: h, Y6 q3 @- G: a/ p* z2 b
/* Specify the memory areas */
8 O0 [( ?" _) M/ z9 H( Y5 y" k- PMEMORY5 u2 i( k$ [$ G! f6 }, X
{$ @& O- f. w4 A( p ?
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 256K
- t/ c( B1 U3 J4 _- |1 |: QRAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K" _5 ~* P# w3 P v- O
}3 J* r) M2 P$ B, I% \% ~
& k3 ~1 M" W; k
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。
0 d" ]' g* }+ A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。
3 S8 p) U( ~. G. _0 ]# R/* Specify the memory areas */ z# E& d( w8 V
MEMORY- u& |3 n* V& I8 I0 o# k# b
{3 U& P6 x: ]9 {: j- f, ~
FLASH_1 (rx) : ORIGIN = 0x08000000, LENGTH = 128K$ V B0 U5 M a7 T- y
FLASH_2 (rx) : ORIGIN = 0x08020000, LENGTH = 64K# Z8 x( a& B, }# |2 h; s8 @& m( Q4 [
FLASH_3 (rx) : ORIGIN = 0x08030000, LENGTH = 64K5 d& W) E p* b+ @% S$ p' _
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K7 v& [4 P5 J$ \+ ? B/ P. u
}
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# k( e( I- U% K9 \$ n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。& M3 k; t$ f0 A7 Z: T# S8 k( \
/* Define output sections */: _8 H- ^' `& b& v, L1 w
SECTIONS8 x$ z9 u J, \" R4 {9 b' Y+ T2 v
{9 a& \, I2 n' R" x6 j
/* The startup code goes first into FLASH */: h( |1 o, b* S, Z
.isr_vector :0 R) r7 X( Y/ S
{! m( h: \% E% b* d( x
. = ALIGN(4);
/ Q$ v: I4 P, l; p5 y" f7 ?0 U KEEP(*(.isr_vector)) /* Startup code */
% ~. v& w, f! h" h . = ALIGN(4);( l5 K3 D$ u9 g$ F
} >FLASH_1
! G7 d F6 A6 G7 r4 z5 U
! x3 f/ b2 R( J3 n1 Q3 m' s .algorithm_code1 :* v/ k! X! K9 p; j- n0 O
{) X- p% n0 t! E; o+ [. X
. = ALIGN(4);
2 r C( @" S# R" L% d0 M# m *algorithm_1.o (.text .text*);
6 `( g8 k5 d6 U$ e) b% G *algorithm_2.o (.text .text*);' b6 j6 T% m* A
. = ALIGN(4);9 V" y2 K) L0 y8 l
} > FLASH_2
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.algorithm_code2 :: V& W5 D+ s, V4 k/ s3 U
{
8 m* `3 e2 s- T' Y: I . = ALIGN(4);
2 _9 X+ ?" d7 g4 s *algorithm_3.o (.text .text*);* d7 m# P. R% r9 h, v) |( \
*algorithm_4.o (.text .text*);
% V% t0 w+ I! w . = ALIGN(4);- s1 e5 y5 ]0 i! C* e! [ k- ~' Y
} > FLASH_3
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/* The program code and other data goes into FLASH */
/ B C) F2 Q# y7 q4 m; o8 D* T$ } .text :
e2 P s; l; |7 X {8 k1 O& C- A3 V: [
. = ALIGN(4);
# v! @2 ~9 l$ }5 ?: N *(.text) /* .text sections (code) */
; M. ~8 s4 g4 I2 Y *(.text*) /* .text* sections (code) */
* T! ?% N; s4 e+ S! J8 c*(EXCLUDE_FILE (*algorithm_1.o * algorithm_2.o) .text .text*)
% d* Z/ C) B0 a! y; D. _- R4 f*(EXCLUDE_FILE (*algorithm_3.o * algorithm_4.o) .text .text*)
* _2 ]2 C# G" t+ L* ~- x *(.glue_7) /* glue arm to thumb code */1 N6 a+ T$ b2 ]
*(.glue_7t) /* glue thumb to arm code */
( Z4 g- [! V/ n* M4 _1 j% k" M *(.eh_frame)$ B( O( \0 f5 O" B+ T4 }8 L
KEEP (*(.init))0 M8 |. N: \$ ~. o( [; D9 C7 ?9 J8 H5 y
KEEP (*(.fini))
0 F% Q: E. B# ?- b# H . = ALIGN(4);
" o' C: u8 L5 t- r! p0 O _etext = .; /* define a global symbols at end of code */! l" \, g; U' [5 S! R+ k: }
} >FLASH_1
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7 l/ L$ J+ O! v" b% J5 Z+ n- w1) .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。6 D# V: ?# G" L& K9 _1 I0 q
注意:& x7 g" v* J% d$ x
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;
. l4 Y! n# K) c- G8 R, E; O2) .text 和 .text* 是可执行的代码;- ?; j% N9 K4 M$ C* s; G$ ~$ q
3) section 名称后的冒号与section 名称之间要加空格,如:.algorithm_ code1 :。, j2 x! Y) g! j6 E a/ t
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。# V! o# c8 l3 |- K8 w9 V4 T5 [
3. 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。! d5 x# m9 C, B2 j! N
/* Specify the memory areas */
3 V( n- Q* t5 |MEMORY7 k& r# n3 s) i& i9 i4 |
{
, G7 L9 a" A8 P) w. }3 U9 E7 qFLASH_ZW (rx) : ORIGIN = 0x08000000, LENGTH = 96K
7 C1 X" Z; f3 H- P8 @) LFLASH_NZW (rx) : ORIGIN = 0x08018000, LENGTH = 160K
% ?& {+ ]$ v( _% k& x: KRAM (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。
( W; H1 v; V- c& ^% }/* Define output sections */! T/ Y# M' R5 h
SECTIONS
- c( e! \/ o7 y5 V# @2 h% {) w{
$ ^( B3 |1 K9 j; G" T" u8 b) J /* The startup code goes first into FLASH */
7 t" {9 |/ _: N8 U% v* E .isr_vector :1 C1 S( e0 n* w, n3 K2 C
{
( J a1 B x f& C . = ALIGN(4);
8 G, N& C7 C: i KEEP(*(.isr_vector)) /* Startup code */. @, r# Y9 j7 `( G5 C
. = ALIGN(4);+ c5 ~7 g q( o. |0 I4 f- ` j3 B
} >FLASH_ZW
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.nzw_code :& c% {) }& M/ {& \
{2 h; x) m- f# Y. b+ \4 r3 Z$ j- D
. = ALIGN(4);
A0 i, K9 w6 a( Z; H *nzw_1.o (.text .text*);
- u2 e: S! O5 M* Y7 d9 B+ _ *nzw_2.o (.text .text*);- {% N3 ~: o& x( }
. = ALIGN(4);9 R8 I- T) v. ~% q" A; A, Z( i
} > FLASH_NZW
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; G) C5 B( k5 `" x/ i& E6 O /* The program code and other data goes into FLASH */* p6 J V! ~3 f9 W; [7 }$ Y
.text :2 @ Z" v0 n4 k$ C) e
{# W$ g+ a& r5 l2 I
. = ALIGN(4); 9 ?% e( x. K% G, g m
*(.text) /* .text sections (code) */
% V* F! N) P+ [! k2 `; f *(.text*) /* .text* sections (code) */$ c$ c3 [9 `; b( g
*(EXCLUDE_FILE (*nzw_1.o * nzw_2.o) .text .text*) ' o3 K' `/ R6 e) M ^
*(.glue_7) /* glue arm to thumb code */
; m5 Q* d9 h1 P- G9 O6 Q *(.glue_7t) /* glue thumb to arm code */+ c5 ?: A. C" \5 K) e% p
*(.eh_frame)
; z% i% \) A& g! d. M2 o Y KEEP (*(.init))/ `; ?2 m, k5 U: u, W) |* p
KEEP (*(.fini))
+ ?/ |1 u, |- d4 D2 V1 h . = ALIGN(4);9 S2 x+ ^* c% U; R. Y9 i
_etext = .; /* define a global symbols at end of code */
z& @: k' J4 p4 } } >FLASH_ZW
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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。$ b& ]3 Y/ {% _/ f d- _* k
注意:
\2 Z, R8 @" o7 x6 j1) .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;9 ?3 k- j# P+ F
2) .text 和 .text* 是可执行的代码;
: a, }' _5 Y+ o8 E3) section 名称后的冒号与section 名称之间要加空格,如:.nzw_code :。
0 o+ S3 E: l9 g/ b2) 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。
+ s7 }% w: C' g7 j' y/ ~
( ]0 s! u: y! k" w% `4 J附录1
. t, I" A- K2 k" y" m( T- w/*
$ ?7 m( D, d7 S' B*****************************************************************************8 g6 v& _* M1 Q4 e" Y$ A
**: j! x% P4 Y9 u# q9 m, z
** File : AT32F413xC_FLASH.ld3 r' U8 p0 w" M0 a' l9 _
**
6 K" ~5 R# [: ]0 a8 y5 L** Abstract : Linker script for AT32F413xC Device with
; v; J! `+ G0 G* n/ Z3 ?! J** 256KByte FLASH, 32KByte RAM j2 v# t5 ]1 W
**
- d1 P2 v4 v$ r5 Z/ G! g! T& ^4 Y** Set heap size, stack size and stack location according
1 F( U' J" c0 e E( Y4 n) y** to application requirements.* ^8 Y% `. i B. E K; w
**5 b1 U: e: U0 x' c2 ~' Z
** Set memory bank area and size if external memory is used.
# {, t- F* g2 o$ a" ?* @**+ Z {& K; j- y. L. B
** Target : Artery Tek AT32
# e" W. A) g0 P9 W**$ h' Z5 j0 A1 t
** Environment : Arm gcc toolchain$ L( s6 O5 D8 A
**
% m* T( C/ _7 n*****************************************************************************
2 b; [8 T. I* }% L5 u( M*/) L/ k# w9 x/ |+ L5 k: i! I, F
/* Entry Point */
+ X0 g$ A; ]# D8 p$ ~4 i5 ^ENTRY(Reset_Handler)
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/* Highest address of the user mode stack */
5 ]( ]; w+ [) u4 ]_estack = 0x20008000; /* end of RAM */
7 o, \ q+ ~& ~$ P O1 E( |' x4 R# `5 r% I1 M
/* Generate a link error if heap and stack don't fit into RAM */
7 i$ |: _& N7 q8 D3 v ]/ j_Min_Heap_Size = 0x200; /* required amount of heap */; N5 J' ]! N* [! ?9 s% Y
_Min_Stack_Size = 0x400; /* required amount of stack */8 `) ?4 q* b" x9 {) }/ X6 s9 H/ G
+ h& |* L' E9 }1 U0 R
/* Specify the memory areas */ s6 |, e6 K/ u& C/ r6 Y
MEMORY
* J6 K, N& C0 i: n2 K3 E1 P{8 A" @: n4 f2 i9 i8 i+ z
FLASH_1 (rx) : ORIGIN = 0x08000000, LENGTH = 128K* C0 n4 e3 ^ R3 V3 {3 H
FLASH_2 (rx) : ORIGIN = 0x08020000, LENGTH = 64K, B7 a$ S) b; h0 u4 x
FLASH_3 (rx) : ORIGIN = 0x08030000, LENGTH = 64K* w% S! [; `6 I- q2 _
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
/ l2 a' e" s' z0 K}
: T2 M2 g+ V6 x s q7 _6 ?! S! x. R& {& _4 ?0 ?4 S4 m& {6 T: H! I
/* Define output sections */: L' H Q9 R; A, u: N4 Y* h
SECTIONS
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/* The startup code goes first into FLASH */
8 J% {( |- i# A2 M .isr_vector :
* }7 e- V+ [- Y+ C# ]9 H9 z {9 j9 b3 |, a) `2 f% {7 i( R
. = ALIGN(4);
$ i* ^( y K/ ]3 T8 M KEEP(*(.isr_vector)) /* Startup code */* N3 X$ d+ D; Y- J' X( _
. = ALIGN(4);8 E7 |0 H5 }6 V
} >FLASH_1
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.algorithm_code1 :
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. = ALIGN(4);" S! ~2 G/ p0 b8 M1 C5 O% I
*algorithm_1.o (.text .text*);, c7 ~' Q% V" t7 |, _
*algorithm_2.o (.text .text*);
, l( {3 q* ]8 q" d+ k . = ALIGN(4);$ ^0 Y0 g* q0 ]# o' r
} > FLASH_2
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; o0 a. i b" X; ~( N .algorithm_code2 :- T( a& w8 r: c0 }$ c. c
{
8 B% g" Z7 M7 ]: C3 d% i . = ALIGN(4);
7 `5 J& x$ Q2 J *algorithm_3.o (.text .text*);0 {- b3 J8 i$ \5 A2 v
*algorithm_4.o (.text .text*);2 o0 e1 F. ^# Q( J# q: i6 x
. = ALIGN(4);! Q* _# W7 a+ P& e
} > FLASH_3
8 m( P0 P, D$ y! {: D8 _) A
/ @; V- U: Q+ x/ o8 p) K/ m* p: K0 e /* The program code and other data goes into FLASH */! c( A$ b' S$ Q2 S, u% P! r5 W9 t
.text :
: |4 U% ]7 `* ?% n+ h z8 k {
) S! n6 i+ V5 { . = ALIGN(4);
/ N2 a ] V/ |+ L *(.text) /* .text sections (code) */2 t, e$ d2 Y. o
*(.text*) /* .text* sections (code) */+ D0 e3 N# G" E
*(EXCLUDE_FILE (*algorithm_1.o *algorithm_2.o) .text .text*) ' _3 B+ U R/ i# W n
*(EXCLUDE_FILE (*algorithm_3.o *algorithm_4.o) .text .text*) 4 f+ g7 ]' g$ P1 \7 {# |$ k! `$ s
*(.glue_7) /* glue arm to thumb code */
. ?: g) m3 C- e$ P- w, a *(.glue_7t) /* glue thumb to arm code */
, ]. R) Q* {" _3 F( s *(.eh_frame), j) e/ ^& \4 Y& A9 J
KEEP (*(.init))
7 ^% k0 |1 B. h. x; g KEEP (*(.fini))
8 n# b* g+ m6 W% u2 P3 H* v4 {+ j8 s" q' @
. = ALIGN(4);0 j+ t- ^, g( d
_etext = .; /* define a global symbols at end of code */9 S( ~) q I" }" `
} >FLASH_19 `; y6 n' \4 `1 v
6 S+ h0 s8 J$ G; q( Y
/* Constant data goes into FLASH */
+ f3 l1 g! Y. L& F0 v .rodata :5 y9 u: U/ o8 |* B
{
3 r8 k" @9 U; Q6 F$ ` . = ALIGN(4);
4 t. J. t$ [; L7 J3 L4 f' l; [) n *(.rodata) /* .rodata sections (constants, strings, etc.) */
/ C- c# c% B9 D# v$ o *(.rodata*) /* .rodata* sections (constants, strings, etc.) */ 8 T' Y. ~9 O0 d: X9 G4 y b5 M9 Z
. = ALIGN(4);; s6 K5 Y" O: X" D
} >FLASH_1
1 M: U* t4 r2 [& K
8 C7 ?* E$ @: J# a0 u% O X .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH_1* o# B; F0 a/ X5 @, z& V
.ARM : {: _ h1 ^! l9 p/ S
__exidx_start = .;0 `2 @; u& P# ]+ H6 w$ Y+ F- O3 L
*(.ARM.exidx*)
, M- I3 N$ z' ?; H& @: g __exidx_end = .;
! Q' ~5 r0 X0 C/ L* D } >FLASH_15 J8 P3 I& F; S' T. ?
* |: L4 b& J5 Q& o) e' L4 V .preinit_array :
- ~) N$ v" R- h# H1 j8 w: ^ {
. J/ e: {& g3 H! C PROVIDE_HIDDEN (__preinit_array_start = .);
9 s5 X( w" @- Z! j; G+ P KEEP (*(.preinit_array*))
3 \4 x6 U/ u2 y4 f2 I$ n PROVIDE_HIDDEN (__preinit_array_end = .);" D5 \" l* S; I* O' Q
} >FLASH_1
7 \7 l/ f2 O: Q1 U
t6 t3 P* z9 [- J+ X .init_array :/ @9 M! ]2 C! Y0 U9 W$ {5 [
{
3 a* [3 z Y% U9 @4 `8 o PROVIDE_HIDDEN (__init_array_start = .);2 o; Q( H0 v# J: b) e- ?9 G/ z! _
KEEP (*(SORT(.init_array.*)))" g" y6 n3 H8 N' ]& P; k# d# j
KEEP (*(.init_array*))
" H( N" {- j w; I8 L7 N1 n$ O( l PROVIDE_HIDDEN (__init_array_end = .);( h( G! U- z z
} >FLASH_1) D$ D! M6 D7 {
1 {% J, v6 j" e" q7 p4 k I" i4 \* {
.fini_array :+ c/ K: ]" I/ ?' M0 u0 K
{
0 s3 U @( M7 z# ` PROVIDE_HIDDEN (__fini_array_start = .);* G4 K5 ~2 V! J6 d, v4 W% x3 t1 l
KEEP (*(SORT(.fini_array.*)))
# }8 `9 a; }2 ?# [( A$ m KEEP (*(.fini_array*))
8 {# A' e+ K( H& v+ \* I# d0 Q0 N5 C PROVIDE_HIDDEN (__fini_array_end = .);3 v* z) o0 Y! E% \
} >FLASH_1
4 K5 h4 _. J7 l9 U+ Z$ o4 E' K1 G# k" g1 J4 d1 f$ k% P
/* used by the startup to initialize data */5 N; `* s/ l9 _ g1 |
_sidata = LOADADDR(.data); F5 L4 W# ~% K
% D+ j" [6 g9 u
/* Initialized data sections goes into RAM, load LMA copy after code */
' q/ [+ r1 o, `; h, K) k1 g5 t8 B+ M .data : : R8 m; p: }2 b$ O! C# g
{
. R0 r$ q9 h% ~1 ~3 S Q" v9 z9 }/ E7 } . = ALIGN(4);
0 v* Q2 c+ t; `, E( N1 j7 E- C# t _sdata = .; /* create a global symbol at data start */
+ A& r9 f. x5 e0 ^2 q# o *(.data) /* .data sections */
/ y2 u7 a; g$ K! g% @8 N; k# p *(.data*) /* .data* sections */0 o$ o' p2 k0 g/ W4 n; T
! u' @0 j+ a; \* {; A/ l . = ALIGN(4);+ S$ ]1 d. m/ U4 B2 l3 b
_edata = .; /* define a global symbol at data end */
* f9 S/ h9 T' k) @% G% ~! g9 x } >RAM AT> FLASH_1
' [. ^% n6 c o y$ W: L3 X, E& \2 B6 I `" _
/* Uninitialized data section */* y' A5 p. L. I( I$ X
. = ALIGN(4);5 ~% c2 `6 K0 P5 A' e m4 _/ G4 N
.bss :1 w- ~( \4 }* v# x; L" T
{' V* {# d6 g2 f- f' l% I! J, s5 v8 s0 W
/* This is used by the startup in order to initialize the .bss secion */
, K0 s8 T& j* c: X _sbss = .; /* define a global symbol at bss start */
: K& b. C5 `' } __bss_start__ = _sbss;7 F2 @* b. q/ w8 d1 ]3 A
*(.bss)) v/ Z; N; W. w7 d8 }
*(.bss*)9 C: k9 @ B3 t" V. r' H% Y
*(COMMON)
/ S' C% u/ J* u& P) K- ^ Q
- x$ }/ z8 l( v% w1 T* ] . = ALIGN(4);6 _: r6 f+ t% m, N: @5 K y
_ebss = .; /* define a global symbol at bss end */
4 B$ w" k7 T- x" m( z" h- v5 m9 g __bss_end__ = _ebss;
# ?" b0 O8 v; C4 D( ?8 v } >RAM
& ]1 Z, p( J- C) U, j
0 a* E; T7 F5 ]3 A7 p. a0 v; @ /* User_heap_stack section, used to check that there is enough RAM left */. _, ` b0 ?" f$ }
._user_heap_stack :3 C7 ~. Q9 M- k Q( x
{
- d% d, H$ h9 ~: h5 U* b4 T- [" M . = ALIGN(8);5 l( Q9 h* @" o8 [0 Y# I# Q
PROVIDE ( end = . );
1 h, F. S7 R y9 M, o2 f- T; ` PROVIDE ( _end = . );
7 ~1 F' d% J, ^9 W# H) ]; w) j . = . + _Min_Heap_Size;
- \3 Z; X/ Z a0 \ . = . + _Min_Stack_Size;
0 r) e M5 l: f . = ALIGN(8);! S8 C7 E: P* Y) s8 d: v
} >RAM
/ ~% H! m7 E% ^, `7 c. }. e4 A. C. s, F' [; v b
; R! h" g+ F: v/ X+ @
# U% W& o1 c1 {" v5 \1 ?. @ /* Remove information from the standard libraries */
+ {* C3 J4 J2 q6 y9 p /DISCARD/ :4 M' k5 _! k) v9 J. ]
{
! q4 Q) n D0 N1 p libc.a ( * )) \# M+ @- b% a
libm.a ( * )
% N3 e* @& Y1 b; \" { libgcc.a ( * )' `4 k! z$ b* q( }& g
}9 N' W0 r k- D# J8 Q3 n
$ u* v0 n6 S% R* R4 ~3 [" H .ARM.attributes 0 : { *(.ARM.attributes) }
2 P% T9 ], O% n}% u$ o+ U2 h& [- ]# V. z
* J0 f9 p+ E# |; Y: E" n
附录21 @7 K% c( f+ M
/*
! F: ]: p3 M1 V; ~% }7 r* W& f*****************************************************************************
; y& k+ Z! j$ H- L**
- r0 z- W2 A! q9 O0 [** File : AT32F413xC_FLASH.ld
$ z4 ?$ u& t% E1 O**
* Z: O, p1 i" a7 L8 ~& M0 s** Abstract : Linker script for AT32F413xC Device with
! R3 X& ^# L) G- t8 W** 256KByte FLASH, 32KByte RAM, d% c. V" S, r* n9 f4 u4 j
**
4 D" y- H/ j% _9 o5 {6 Y** Set heap size, stack size and stack location according* X; b$ \: O$ O# B* ^+ a$ a
** to application requirements.
9 A4 k! |4 | ^/ X9 W; h**; B6 l- N( ]* J5 i+ j# w+ O
** Set memory bank area and size if external memory is used.& S9 ]; I. I8 T5 Y) E
**
* W, b6 u) x3 n** Target : Artery Tek AT32
; v1 I) u" c' o7 V/ t! E**
1 \; ^* Z L: X/ O** Environment : Arm gcc toolchain* ]) h9 \/ f8 |3 i" z
**6 s7 b. O. M* r$ b. \9 H) w
*****************************************************************************. }; |2 y% Z4 t; }# [& P, T
*// h. m9 S0 z* M$ r: F
) l& T. D4 k& G4 S8 u9 m* ?/* Entry Point */
: ?/ ]3 i# i4 AENTRY(Reset_Handler)
/ D" F g! C+ f2 ]% V y& g3 l+ ~; d$ n
0 u7 o1 P1 ]2 T P, j/* Highest address of the user mode stack */
8 _3 Z6 M0 ^* U, M( C' w' W* z) T_estack = 0x20007FFF; /* end of RAM */
- ^: `- t& b1 u- J. @3 A- ?( [7 m7 p( c# Z& H! t
/* Generate a link error if heap and stack don't fit into RAM */: o" J) s' X: b }- u, _2 B
_Min_Heap_Size = 0x200; /* required amount of heap */* n2 i( H9 E5 C( }
_Min_Stack_Size = 0x400; /* required amount of stack */
( [2 s8 }6 b3 {* s) M2 l
8 l3 l0 o6 I! E# Q, V/* Specify the memory areas */
0 ^- [ i. ^! |MEMORY) V& h* s3 j- o8 d
{
& X) q: s2 v9 tFLASH_ZW (rx) : ORIGIN = 0x08000000, LENGTH = 96K
% J8 [7 c% f3 c. _FLASH_NZW (rx) : ORIGIN = 0x08018000, LENGTH = 160K
8 L) v5 k: V+ h: i$ k+ GRAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K2 k6 X# p1 t6 Z! o' \
}: [7 P# m# t* ]. M
, j5 f7 Y$ x! @$ x. L/* Define output sections */
* @/ n& ]8 |$ lSECTIONS q$ `! U/ {9 U* Q/ B
{8 X0 G, Y Z2 X( K+ F
/* The startup code goes first into FLASH */9 ~" @% ]: g5 ~0 [- c5 Z
.isr_vector :
# x: w- N% u' j$ k T! w% @0 m {
1 x( _3 Y# b8 K4 J& x0 r8 T6 v . = ALIGN(4);7 |# S2 [2 J9 |1 L. j
KEEP(*(.isr_vector)) /* Startup code */4 |2 a( `* F5 c) Z
. = ALIGN(4);5 z x2 t6 |- k% h, D7 F: M
} >FLASH_ZW3 D5 k. [$ ^- `7 J3 g3 F/ F
2 e5 R5 o- v) H. z) Z .nzw_code :9 C- Z, @% |% m7 n3 F5 H( [; k
{
4 _& t8 @( @+ H5 m( m, Q, V: O . = ALIGN(4);
h9 i$ O' z$ N/ H9 B*nzw_1.o (.text .text*);
- ^. V% ]. h$ @, {*nzw_2.o (.text .text*);
) O) p3 V* V2 z. = ALIGN(4);5 g' h; ]# @% U
} > FLASH_NZW3 c* b! y* F4 L% z( _+ X1 C1 ~ \2 ~
/ b: q( v( Z; X) P! P* J
/* The program code and other data goes into FLASH */, ^$ x+ {, I" b/ u( t% |2 {% S( h
.text :
) v+ F" y$ r3 u' ?* ^+ E {
4 S1 W5 O5 C5 H" W8 d5 D; f . = ALIGN(4);; ]# m6 A' h7 `
*(.text) /* .text sections (code) */
$ \1 p/ `/ r2 R( s; e7 m- l *(.text*) /* .text* sections (code) */
) j% G m+ e" D) I& a) M *(EXCLUDE_FILE (*nzw_1.o *nzw_2.o) .text .text*)# ]$ [- s0 A' L" ~' _, y; ~
*(.glue_7) /* glue arm to thumb code */
9 T: p' L/ j: o *(.glue_7t) /* glue thumb to arm code */2 z4 w9 ]3 |4 E+ j. `
*(.eh_frame)
3 f1 m: w" H" n1 T& C2 n
, ?/ x' a$ c* W, V# m2 K% p KEEP (*(.init))! b9 C" V% s% N- K! q$ z$ z7 a: n
KEEP (*(.fini))( S% ~- y7 ?: R6 }
- _0 d3 T0 u# W1 ?8 W, g . = ALIGN(4);
: i( \2 i o* l" \- B _etext = .; /* define a global symbols at end of code */
6 _" m7 N( c* d' I% k% [; O6 \7 B } >FLASH_ZW ; x& y. i+ }) o" @: v8 ^+ w
5 x0 ?3 @" x. d* l& k
/* Constant data goes into FLASH */9 s- r ^; H2 C' e: q
.rodata :& M3 n) G3 k# `1 D
{+ B3 F1 Z; D4 O5 e
. = ALIGN(4);
; _- |7 H% f, o# w5 N *(.rodata) /* .rodata sections (constants, strings, etc.) */) Z( t* z6 ~. G- ]$ s: `% I" _1 U% V
*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
% O6 ?# G! G2 V0 ?& Y1 Q . = ALIGN(4);
" b a& i. I1 F, Q6 L4 r } >FLASH_ZW( I4 ^+ O8 G8 D! q1 V2 R$ c
- }, p9 D4 a, @' [4 i4 P .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH_ZW/ l- `, s# k, Q6 c/ r- x- M
.ARM : {7 p6 l- K8 M* X! i) F
__exidx_start = .;
1 a3 m* W5 b5 L7 \; Y *(.ARM.exidx*)! m% m/ H, w( t5 _+ z6 L" U
__exidx_end = .;
& _. [% P/ ?) A5 @* U7 ~) a, X } >FLASH_ZW
" S; }3 q$ z# B! p5 Q* ^9 ?' ?2 p2 S" e- ]; b7 C2 i8 J
.preinit_array :( d. ~2 D' {6 i
{$ ]% b& w9 T1 V0 a# `
PROVIDE_HIDDEN (__preinit_array_start = .);
8 s8 R5 ^# @' h) w7 g, n/ r KEEP (*(.preinit_array*))+ Y8 J* J2 E1 v
PROVIDE_HIDDEN (__preinit_array_end = .);
5 d! f! X* {5 D9 ~ V- ] } >FLASH_ZW# M2 ]! \: h; a5 }) u
.init_array :
" k# R) N& `9 Q' `( K3 o {8 W0 f* J I# r- o9 s
PROVIDE_HIDDEN (__init_array_start = .);
; a( R: L" m$ }' e# Z9 `' g KEEP (*(SORT(.init_array.*)))
% f5 j, v4 M) k t) t a; a7 F3 ~ KEEP (*(.init_array*))
y3 @- U x6 T3 n; J, J- a! m PROVIDE_HIDDEN (__init_array_end = .);
- g$ G7 P/ Y# B- u' r } >FLASH_ZW
4 Y& S$ c7 [! W: s4 w5 w# B- j .fini_array :
5 D6 W9 |! u6 d4 m# a {
4 e8 ?( U r1 u# o4 R2 d4 ? PROVIDE_HIDDEN (__fini_array_start = .);
: [) S) h, S2 c2 m2 f. _0 ?( | KEEP (*(SORT(.fini_array.*)))
# j7 R9 ]) F' v1 g2 @ KEEP (*(.fini_array*))
7 P" }) W- U y8 z8 R$ b0 Y W PROVIDE_HIDDEN (__fini_array_end = .);
% o- |' b8 f! J; ~* W } >FLASH_ZW/ x$ T, i% Y$ A# S$ R9 t8 m
) `3 K. [- I4 e$ B3 C6 f6 V
/* used by the startup to initialize data */( e& i# D8 t8 k- E, U5 @) ~
_sidata = LOADADDR(.data);3 t) d( b) u+ D" O
3 r) x& {7 S" \ f; g( l1 r0 {: v /* Initialized data sections goes into RAM, load LMA copy after code */
: j9 b+ @. ]! F0 U) F) v& | .data :
" W+ P! \/ d/ }0 v {5 H. w1 w. H' e
. = ALIGN(4);3 x7 i6 `6 \, t5 Z
_sdata = .; /* create a global symbol at data start */" \- \. [5 _8 m% q, ?1 c
*(.data) /* .data sections */
8 Y) e! i& s7 v, N* a *(.data*) /* .data* sections */& c3 j- M9 r# ?+ m' f
4 H1 D5 Q; C' d+ e4 w" P
. = ALIGN(4);- V! `1 N+ O' J. o1 X
_edata = .; /* define a global symbol at data end */+ ~% ^& ^/ v2 e2 k7 D
} >RAM AT> FLASH_ZW9 ^/ J! ?6 \$ J& h) B: @
) O5 z+ F. g7 i2 L /* Uninitialized data section */# r; S. I& H- c' J, x
. = ALIGN(4);
# j; I2 f! b( b" f, n .bss :
# q. v% @' M* i% s; f3 j. I {
; n# H) s* e% `! p! V4 G( k /* This is used by the startup in order to initialize the .bss secion */; M4 ~& T+ ` D. n: P3 Y) H
_sbss = .; /* define a global symbol at bss start */
2 s5 H: I+ P( l# i, T; o- i __bss_start__ = _sbss;
% `- _( l3 I& U( S7 e *(.bss)( I2 d: b0 d, y
*(.bss*)
: L5 j- f, v% G8 ~0 q. C *(COMMON)
4 w* ^7 u, G) R9 D- e, D
/ _ ^1 i+ _5 C; {& \4 R8 g . = ALIGN(4);
. t7 ^) K: @: g _ebss = .; /* define a global symbol at bss end */
* u' L. Y4 k, c% |! K. w1 r/ s __bss_end__ = _ebss;( z7 ^- _( u- o
} >RAM" ?2 A. s0 N. f
Z5 z, {% h! A2 Y. Z, O /* User_heap_stack section, used to check that there is enough RAM left */
2 Z% W. r g5 p+ ]- ~0 ? ._user_heap_stack :" B6 ?; P. e& b: i5 { v8 L& b
{
& l' j6 K; h0 @) Q" R7 x1 K4 M . = ALIGN(4);) ?7 f+ a+ E5 G% r
PROVIDE ( end = . );
5 {2 c; r: v4 g+ [/ }( f. n8 ^3 Q PROVIDE ( _end = . );6 c9 B# n5 B' h! ~
. = . + _Min_Heap_Size;) \2 W0 Y: k: m' g) e
. = . + _Min_Stack_Size;, W) r6 A) Q" g/ z; q
. = ALIGN(4);2 A1 O# T: s/ m0 e+ c9 T
} >RAM
, b; B9 h- D! g/ q, h% O9 ]
# B5 M/ N& c& z( ~/ | /* Remove information from the standard libraries */! h3 `6 Q7 B" j. N3 i# X
/DISCARD/ :
/ z+ {+ w# r/ X" V, f6 @. ?8 }5 H {8 Q- \ I- e- {; a f' ^
libc.a ( * )
4 K) C( z( \: i# |) d# R libm.a ( * )
8 c1 T4 n9 F) E- Y" [ libgcc.a ( * )
& y: o, Z2 D: y4 J }5 g7 y' M1 C- ~/ _
3 c7 G, l3 t% b. ?
.ARM.attributes 0 : { *(.ARM.attributes) }
+ ~6 @: M: m j* f* ]; ]}, E# i+ k4 f% B. ]
, w& R+ O( T' B8 @6 _
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