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Questions:如何在Eclipse中实现分散加载?
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5 ^ K- r( o' T3 {( cAnswer:( t9 u) N) ^1 v; _! s' l( {( ~/ l9 _
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。" O. \% _8 u: S/ \. [7 O# {. D
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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。
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+ K- `0 U$ v; r4 x2. 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:
" t% n( L3 v; |9 Z) L% @/* Specify the memory areas *// C# b* g+ p+ U% J
MEMORY0 R+ P1 O9 L4 ~+ H' T
{4 G8 W7 G: E# x. ]
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 256K
8 H/ z1 \7 d% Z5 J, BRAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K* N$ H: t6 {' m' M$ o
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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。
$ D/ W0 H0 e# Z. o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。
7 h+ J8 C+ t# J5 G/* Specify the memory areas */# _- |) P5 w1 r+ \
MEMORY
$ Z, x) W+ [3 O( ?{, }' U* q& |4 V, J/ C% F
FLASH_1 (rx) : ORIGIN = 0x08000000, LENGTH = 128K
& _ ^2 E& c2 D6 b, S! h6 Z, tFLASH_2 (rx) : ORIGIN = 0x08020000, LENGTH = 64K
, \3 }' n; @$ P# ZFLASH_3 (rx) : ORIGIN = 0x08030000, LENGTH = 64K, k, d1 d1 t" ]9 j2 K* O
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
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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。# ^' z2 s t% m% R c, a& [: S
/* Define output sections */9 A1 O5 u1 I- }- e
SECTIONS- Z1 Z( r' W! _ ~2 i; X6 z |7 H
{% i" z9 E- p9 p5 p1 a
/* The startup code goes first into FLASH */
2 E% }2 {$ b6 }7 M _ .isr_vector :
* Z4 O. y; y2 p. a {
. j( L* f+ T. H4 [* w: i . = ALIGN(4);0 Z* s4 K% `3 F4 _7 c& y
KEEP(*(.isr_vector)) /* Startup code */
" ~2 o6 Q4 m9 [3 h . = ALIGN(4); J4 o1 Y- Q# O% A; |
} >FLASH_1
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.algorithm_code1 :
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# H% Q! `4 e' X$ n . = ALIGN(4);
. s8 X1 |. H; }* j$ B *algorithm_1.o (.text .text*);
/ q( F( h( |4 w. v, R *algorithm_2.o (.text .text*);
6 p# A* @ J4 h0 n( ]. d . = ALIGN(4);
) a7 o- H& v, g# ^ } > FLASH_2 - Z+ }8 r8 E# }* n7 }- d8 R& G
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.algorithm_code2 :
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. = ALIGN(4);8 @ A; {8 g. r) X3 w5 G1 e$ N
*algorithm_3.o (.text .text*);7 w# |% E( c, m* q2 G
*algorithm_4.o (.text .text*);% z) O4 _5 j3 C8 u$ X) O) _
. = ALIGN(4);
7 K$ |* g1 o6 y+ M) L( J) }; X8 I: L } > FLASH_3
( u$ a2 l) ], j: A/ m
; Q( J8 A2 z7 }/ W5 |- i /* The program code and other data goes into FLASH */* f1 |) b) V- G
.text :! ~' f8 J8 ? @+ _" c
{
0 ^$ _/ R0 e( T' r1 y& i0 h . = ALIGN(4);
8 `* E% ]; E4 Y7 }" c9 f *(.text) /* .text sections (code) */
5 ?: N, L' O6 C *(.text*) /* .text* sections (code) */
8 H5 {: N/ d$ s7 M*(EXCLUDE_FILE (*algorithm_1.o * algorithm_2.o) .text .text*)
0 a7 K: R, v" d& E*(EXCLUDE_FILE (*algorithm_3.o * algorithm_4.o) .text .text*) / n( i6 t0 m4 f0 H5 p
*(.glue_7) /* glue arm to thumb code */
5 }3 o. O* r% J2 z *(.glue_7t) /* glue thumb to arm code */
: u8 u$ Z+ U$ c: z2 H *(.eh_frame)! m% [1 }$ Z+ x% p
KEEP (*(.init))% {6 I, B1 ^& ?( \
KEEP (*(.fini))
" g7 ~6 i( @1 \- O' O9 g# o . = ALIGN(4);
3 k$ n, e: _; N5 x+ _ _etext = .; /* define a global symbols at end of code */
) m( V4 J5 t _! Y* m/ ?& c4 ` } >FLASH_1
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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。0 u9 H+ |* a& r( G; g
注意:8 s! T% Q' C" ~. @" s' D2 \* g4 Z
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;' U1 N* T7 u) w: q! b6 p( U: Z
2) .text 和 .text* 是可执行的代码;
! X: k( v) \- n1 z3) section 名称后的冒号与section 名称之间要加空格,如:.algorithm_ code1 :。" c! k$ l+ `; E7 L0 N
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。
1 X# v3 P: ~+ {/ n) v3. 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。# _8 o2 S3 u: Z! _) v
/* Specify the memory areas */9 B3 L' U+ `0 }( r& G9 @. g0 V
MEMORY
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3 R2 n" Q- d0 s5 p% H/ g; ]FLASH_ZW (rx) : ORIGIN = 0x08000000, LENGTH = 96K/ E+ @2 C4 R9 g; n: d6 j
FLASH_NZW (rx) : ORIGIN = 0x08018000, LENGTH = 160K1 e/ A: ]8 J, x n/ k0 ?
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
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* u. l5 G/ f& q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。
# B/ @4 S v, P( O3 m/* Define output sections */
7 t# ]" P$ D c, @6 a( L/ e) x4 qSECTIONS
/ a1 S+ L8 p1 N; u( a1 t{
" O& u$ F. p# L /* The startup code goes first into FLASH */
0 B- q. F+ u) ]. d b U1 D# ~ .isr_vector :" v1 Q: v, H$ e. P2 a
{
5 v& \+ W5 i5 s2 E8 E" b . = ALIGN(4);
: ?! m" l) r' G3 C KEEP(*(.isr_vector)) /* Startup code */
' e% K) L: U' b" Z% i: ?) Y . = ALIGN(4);
2 J6 }) I0 [6 q7 Z) S } >FLASH_ZW
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4 }5 r5 X ~/ L# O! J( | .nzw_code :1 I$ V3 F( E/ U9 R4 q4 U
{
- a2 J9 L' |# O% B7 I . = ALIGN(4);+ a9 Q0 A" {+ f4 ]( E/ g
*nzw_1.o (.text .text*);) X! B, r. K( \3 t
*nzw_2.o (.text .text*);
% [( N% |# k! `' A5 U& j . = ALIGN(4);
, b4 b+ }) x H } > FLASH_NZW
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- x6 r& F6 I+ `; z /* The program code and other data goes into FLASH */4 |; _# M0 q7 T! G* B, Z
.text :6 g9 [7 K! p$ I' o" z# e i
{3 e% y' N$ T& x5 X( N2 y3 f
. = ALIGN(4);
" P( W1 ^0 w) Z: ^$ u *(.text) /* .text sections (code) */4 J& s8 c0 ^0 |7 h2 D; x x1 p) a
*(.text*) /* .text* sections (code) */, Q1 ?, F4 t% {3 ^0 q" \2 J. [& ~
*(EXCLUDE_FILE (*nzw_1.o * nzw_2.o) .text .text*)
3 t4 C& ^2 M a2 w, c- E" x *(.glue_7) /* glue arm to thumb code */
1 r! U( k# i, k. t3 o8 Q *(.glue_7t) /* glue thumb to arm code */
( J0 r5 E3 f ^9 ~ *(.eh_frame)0 W5 h' U* M, D Z( O5 }( p! a
KEEP (*(.init))
4 e! m9 O0 z1 N* U KEEP (*(.fini))
. k6 \7 W: u0 U* ?+ t . = ALIGN(4);/ r) f- q, z2 t, F; {7 g/ X6 z' F
_etext = .; /* define a global symbols at end of code */: \& _* P" j" p- O
} >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。# L ]7 c, `9 H2 O( s
注意:
3 @- K8 q- a0 Y$ |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;
& T: N, g1 }& }) m5 L2 b( N0 y/ E) N3 Z2) .text 和 .text* 是可执行的代码;) @# p/ D0 j Y! y8 k- T# s4 w
3) section 名称后的冒号与section 名称之间要加空格,如:.nzw_code :。. D! D1 f Y4 W' S: s: S e2 ]9 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。+ [* B! C, T& w, q7 G4 ~) s
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附录1' t1 U# A4 j6 }% R5 W
/*% R" z/ ~: t% D0 `3 Z
*****************************************************************************: l# |+ t0 |* [# F4 t) ~
**4 P% r' w! W: s* C" r0 ]
** File : AT32F413xC_FLASH.ld
: H- [7 c% b& Q; R**7 l, A( y7 B; `2 Q
** Abstract : Linker script for AT32F413xC Device with7 a/ a0 X R) w
** 256KByte FLASH, 32KByte RAM6 V5 _/ T6 C; a. D$ @+ K: A2 P
**
B0 z6 h2 j9 e/ g8 g** Set heap size, stack size and stack location according6 r# _+ s3 s2 e
** to application requirements.
; l2 `9 J: L& Z**/ p# F8 d1 v+ i3 Z2 F( Z
** Set memory bank area and size if external memory is used.: z. U* }, u. E7 s' q1 n/ }
**
5 X8 h$ n9 |- z7 Z% V** Target : Artery Tek AT32
6 g! @$ u- \8 E- K2 Z**6 \6 r) J! S( J
** Environment : Arm gcc toolchain
7 Y+ @7 `; O7 R: k4 U6 i1 }) J**& ~- B R: u$ V1 y5 t# X
*****************************************************************************# r; L- \! e- ]: u& b
*/; q) x/ I, K S; l
/* Entry Point */4 _$ t' p- F- M$ t0 G1 J! e* v
ENTRY(Reset_Handler)6 J; U- V9 _% F3 J* T
: |1 _# {+ d0 I" Z/* Highest address of the user mode stack */
" L9 _) C* K9 V" M, i4 Q_estack = 0x20008000; /* end of RAM */: X+ p, W- I. u. d
6 ^1 a; d6 q" Z% G+ |/* Generate a link error if heap and stack don't fit into RAM */
, X4 P6 e& \: u, ^) x( Y_Min_Heap_Size = 0x200; /* required amount of heap */
: n# i" ^+ l) r# `& {+ H_Min_Stack_Size = 0x400; /* required amount of stack */
% o$ k) c: V* b- s( E/ w) `
$ Q- o3 ?9 S) O4 ]* h; U/* Specify the memory areas */7 `; F6 v6 x: s$ L
MEMORY
4 x: q9 K$ Z7 [& ]7 k{
0 u9 l/ e e+ }' K s6 WFLASH_1 (rx) : ORIGIN = 0x08000000, LENGTH = 128K5 w" t! A2 J- L
FLASH_2 (rx) : ORIGIN = 0x08020000, LENGTH = 64K
5 T' i% V3 q2 L9 xFLASH_3 (rx) : ORIGIN = 0x08030000, LENGTH = 64K7 r6 n2 N k- z- y% K' }
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
0 k1 Z! W: m, R4 W' o4 J}$ D* _& u. z3 E
3 c! P( D5 }' I6 x* X7 a0 P5 w/* Define output sections */
' _* V1 E9 z' J1 W6 G0 W1 FSECTIONS
6 B) X: x" D% e$ X( z6 h{
2 c7 `% M3 J1 ?4 \ /* The startup code goes first into FLASH */; g5 S- `, X+ ^( n; \1 C
.isr_vector :
& k; N8 D3 J% [$ G9 x! D4 T* A3 {" M {
* q& I" x" J6 O1 H# s, e3 f) U . = ALIGN(4);7 A0 X! I! W8 {1 }; {. W" _( W+ V
KEEP(*(.isr_vector)) /* Startup code */$ X& [4 q. k$ m8 A f# \
. = ALIGN(4);# M# c+ K0 N, B) B: n7 r& j- L2 J
} >FLASH_1
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: X4 t# `8 G% f5 i9 P; M# v* M .algorithm_code1 :
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$ f/ b3 l! r' A7 [5 Z . = ALIGN(4);( f! e+ b$ O0 F; M9 O
*algorithm_1.o (.text .text*);
6 s2 K& C' m6 t *algorithm_2.o (.text .text*);3 y% F; G% G7 d# Z
. = ALIGN(4);) O- A( M; k* [& y; g5 V
} > FLASH_2
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: W4 i- N+ L1 @! b/ V. [) \9 c1 @0 g+ J .algorithm_code2 :( _8 S4 @, u9 ]( V& k. Z4 @
{
( C" O& Z; p* g n* w% D& F# a) r . = ALIGN(4);
6 t) L( ]9 ?9 O( A0 Z- P *algorithm_3.o (.text .text*);
" a7 C' M% }8 y8 [/ W' ~ *algorithm_4.o (.text .text*);
1 T! N+ I7 g2 T9 R* r . = ALIGN(4);
7 u& o) B. M- g } > FLASH_3 W, I# I: m9 \5 Z
& d3 h& e- {7 {) q% f
/* The program code and other data goes into FLASH */
8 @, U$ R; H6 O9 f! @ .text :
* n# e6 m8 k; n$ w* { {
! l6 o0 p/ U+ J+ G5 o . = ALIGN(4);
7 t4 k: a* a7 A! m, [- {$ J *(.text) /* .text sections (code) */* k, t3 Z+ h6 M9 x. U8 _) Z5 i
*(.text*) /* .text* sections (code) */
! x( Z: I: a" Y$ E/ _' y *(EXCLUDE_FILE (*algorithm_1.o *algorithm_2.o) .text .text*)
& V8 W8 V$ a3 q/ @ *(EXCLUDE_FILE (*algorithm_3.o *algorithm_4.o) .text .text*) + l2 p! C3 l" P0 v" j& x
*(.glue_7) /* glue arm to thumb code */' r) R' H) n3 K [: {4 w
*(.glue_7t) /* glue thumb to arm code */ @$ l! P; }- G5 G# l# d3 I4 J6 h& d
*(.eh_frame)
$ |/ @- ^) X& z! E- D. r2 G KEEP (*(.init))* W4 h- s' G0 m! r3 X8 h. C1 l& c
KEEP (*(.fini))
. O; b; |, @' V/ x( t
6 x' y, r. b* s! r9 y . = ALIGN(4);( @" c% }9 q5 o2 i" i
_etext = .; /* define a global symbols at end of code */
' \" Q5 s+ H1 _1 |1 v* ]$ a- a } >FLASH_1
8 a! o6 `" f! u8 Q* q* ^6 j5 W5 m
/* Constant data goes into FLASH */) }" u9 A y8 F% b F4 e; c
.rodata :2 f% d( M) l- R/ W1 Z1 t7 f, U: ~
{
6 @6 o$ ]- i8 ]5 d4 ? . = ALIGN(4);9 h0 u. j! m# q! a, V2 }' d
*(.rodata) /* .rodata sections (constants, strings, etc.) */
9 H: Q, n, A' p! @ *(.rodata*) /* .rodata* sections (constants, strings, etc.) */
6 M! _7 S; c2 |# i/ |) S . = ALIGN(4);
! M! @: ]6 H' X7 i' @7 `5 ] } >FLASH_1
& [ g7 I, X+ O% e# c( i0 g# a+ Y/ H2 S8 q7 w! Z
.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH_1* S7 p+ Y1 Q/ e& S- X$ C
.ARM : {
) H- Q8 n e7 C1 ^ __exidx_start = .;
! @# m! S: M( t9 J5 [2 U *(.ARM.exidx*)
' T% |/ L. ^6 V& y __exidx_end = .;8 t* b k& `7 ^! i) ]
} >FLASH_17 G5 R0 X: R% A
% v z, v3 l2 P& \" l3 h .preinit_array :
! _8 y, D- _' Z, V3 c5 t {
% l2 L3 K& j: y* T6 ?$ g PROVIDE_HIDDEN (__preinit_array_start = .);
6 Z6 V) O* O1 L) ` KEEP (*(.preinit_array*))3 y$ x7 A ]/ ?7 U
PROVIDE_HIDDEN (__preinit_array_end = .);8 m3 f f& y# M0 ^
} >FLASH_1
3 R1 q- y% q4 y O$ ? R( H! Y3 M- O, j; k7 u
.init_array :0 Y# D% W+ n5 _
{
3 z1 ~! z+ W) l' |5 o$ `0 H% O PROVIDE_HIDDEN (__init_array_start = .);9 K9 {2 @' Y& x) z# C8 o% y6 d
KEEP (*(SORT(.init_array.*)))
B9 N" X* x5 {% h* J# O KEEP (*(.init_array*))1 g% T4 V4 F8 J" S
PROVIDE_HIDDEN (__init_array_end = .);# U$ |5 s2 @. ^$ Y: W
} >FLASH_1- [% V$ g# n( V! M+ x' F6 G0 @
( @9 [ I9 `$ v6 Z' @
.fini_array :
- K* _1 X7 h `0 A+ @! I! \+ U {
" U) V/ z# ?* X PROVIDE_HIDDEN (__fini_array_start = .);
1 i+ w/ {& A4 s. Y; `. I5 Y( X KEEP (*(SORT(.fini_array.*)))
k" |7 M+ e7 D6 o8 F- f0 O KEEP (*(.fini_array*))
* C* T& Y* r' u/ y8 o PROVIDE_HIDDEN (__fini_array_end = .);
9 g' J# `9 L" Q8 C+ I' V8 m } >FLASH_1
7 V6 \4 [$ s* X$ k K% ^( u: v$ q! F( J. A; u
/* used by the startup to initialize data */
0 C/ P7 G8 y. b, ` _sidata = LOADADDR(.data);
: M) K& N5 ^' Z4 T" a) @' Z. B8 Y4 E% {/ Y4 m- H- c
/* Initialized data sections goes into RAM, load LMA copy after code */
* s9 I3 r! i- Y* R( f% y5 d .data :
; M; J* ~3 ]; [5 _5 p! Z; n# G/ r# g {
7 w* f+ [9 P3 |. s/ S . = ALIGN(4);( q. y7 d9 C, F* R
_sdata = .; /* create a global symbol at data start */1 L7 g$ \; Q. k Q& r7 F% g
*(.data) /* .data sections */& Y0 D$ D. w7 C
*(.data*) /* .data* sections */
7 [9 L0 i/ H3 K3 _, g! B7 \
8 G0 g" n h# I! j' U" D . = ALIGN(4);1 w; b* v$ c! D$ H( V% U
_edata = .; /* define a global symbol at data end */1 c3 \0 L$ v* Z7 _
} >RAM AT> FLASH_1 5 u& r) s' d$ {
' ?+ ?' J7 W6 Y; k* ]3 P, p
/* Uninitialized data section */! S' U+ Q* k I8 j% |1 y
. = ALIGN(4);
* {& a4 G6 M! k( J; B9 a8 M .bss :
/ B7 U$ n, Z3 \7 W {7 s0 Y1 d$ O9 M
/* This is used by the startup in order to initialize the .bss secion */
4 @& U# l3 u/ v# d5 h) m _sbss = .; /* define a global symbol at bss start */* A: W. l7 T) b7 ~
__bss_start__ = _sbss;
9 E- `+ Q! R) e# H% ` *(.bss)5 E& B* Q( B) P
*(.bss*)
, I0 U2 o6 k! {( i: w- } *(COMMON)
# B3 z: }& l! c" I; r3 S$ J( R& {
* y( B( j& Q( d4 y8 f . = ALIGN(4);
$ c& X4 S# V4 Q* Y6 p: J _ebss = .; /* define a global symbol at bss end */
" s- e+ U# E3 D* L __bss_end__ = _ebss;$ [& ~5 d, a& q, ^
} >RAM0 N# Z( I5 r- n# q: \9 p, L$ e
+ S& z2 h( @4 J: a5 S7 g
/* User_heap_stack section, used to check that there is enough RAM left */' c2 f, k Z( C9 `8 A3 c
._user_heap_stack :2 l, n. ]+ o: v0 J) ~: p4 Y+ |
{
H/ t$ ^0 |0 l5 i A" d* q" X/ J . = ALIGN(8);( B3 v) V7 R% G6 T5 z
PROVIDE ( end = . );
3 V9 b: E% }+ W! y PROVIDE ( _end = . );
7 s9 @8 f; X: d6 M& ?; S7 u . = . + _Min_Heap_Size;
! h$ Q" m: x/ ~. Z . = . + _Min_Stack_Size;
# g1 f& g3 O0 Q3 }( _3 g+ ^, P . = ALIGN(8);, o% K8 r8 B0 u2 e
} >RAM( n& a. ~$ F# a% J. L. r
( d u @( O& K9 R/ ^% c
: e5 O) l+ L8 t c5 t: `6 r& A9 m7 ]6 e; u1 ~5 k
/* Remove information from the standard libraries */
& o' |/ C: M3 }0 X R+ R. O /DISCARD/ :
2 y5 \1 J0 c, A6 T1 i2 \ o {6 P+ p. ^0 _$ |. z
libc.a ( * )2 Y9 V; n' B$ _ k& t9 @
libm.a ( * )
% r1 J- U2 V( n+ F libgcc.a ( * ); X0 ^7 \" z" U& E" u- W. r
}
$ ^+ z7 p2 [- t2 h
: L: m' j5 M- h1 t0 k- s .ARM.attributes 0 : { *(.ARM.attributes) }5 p5 c! z. o) m9 _$ A0 i* E
}9 C* O* q5 B( f' {& A
6 Z: l# G) Q8 @5 L s5 R4 U' D附录2$ ]- p1 W' K/ U; `; k1 n
/*
% p9 w9 y8 Q P! H+ }3 n*****************************************************************************: }, A& ?/ p% C* s/ s E) U- [
**- m8 \# G% ]# I5 L
** File : AT32F413xC_FLASH.ld
! X$ g \! {& Y1 p7 B**2 t; m, l2 |; L1 ~. {
** Abstract : Linker script for AT32F413xC Device with
+ l3 b$ d$ |# C6 b, q. ~# D** 256KByte FLASH, 32KByte RAM
* Z5 u- m# E4 B, ^4 ^9 W1 Q**1 |& B( C# t! E
** Set heap size, stack size and stack location according5 [3 f1 u( @2 }3 }5 [" s
** to application requirements.' C& E e$ P8 s. \% n
**
) c0 D/ w0 \2 a. e** Set memory bank area and size if external memory is used.8 `( b# Z6 R8 y9 ^. N0 i) A
**# N" o& F6 u+ M) u" p: D, a
** Target : Artery Tek AT32, x5 S! I+ d7 [
**# x8 t* E: |8 [ L
** Environment : Arm gcc toolchain: L. F; z2 }5 n3 B7 O
*** f7 Z* D- v0 e
*****************************************************************************7 M, O2 D, U* [9 Y
*/
& j! d" v2 M y: ^' }' b1 }$ O4 a+ i6 b& p6 u! u* s; m
/* Entry Point */
+ n. ]* }1 F/ e, hENTRY(Reset_Handler)
' a! M. l6 T" a" j, l
l: }$ _( d' o" s) e8 a/* Highest address of the user mode stack */
; v) `& Q D) @_estack = 0x20007FFF; /* end of RAM */ Y: X; r N- u4 `0 W, i' f5 W% N
; y, |4 n8 m+ _' n) _/* Generate a link error if heap and stack don't fit into RAM */0 i! f7 j7 B5 C E
_Min_Heap_Size = 0x200; /* required amount of heap */
. D- t3 O" p% _7 @/ y2 d* L_Min_Stack_Size = 0x400; /* required amount of stack */: \7 e) V- c' o% V* G, @
p5 b \; E0 s5 b4 a6 ?
/* Specify the memory areas */
$ B6 a" v; y6 A8 c9 Z* f0 IMEMORY
4 W0 H2 {3 u: e K" R{
J% F1 D0 h+ r' W2 \& \FLASH_ZW (rx) : ORIGIN = 0x08000000, LENGTH = 96K2 r; D1 s7 i7 N5 g
FLASH_NZW (rx) : ORIGIN = 0x08018000, LENGTH = 160K
" H* `1 K9 l0 b/ J* V! CRAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K7 }! w$ P8 s c' C
}6 y; {" H0 C3 e; r: k9 a: A
9 o8 S7 A3 @5 d) L: ?/* Define output sections */
4 A# [+ B) A. c; g$ oSECTIONS+ G) E% ^4 n3 y$ y& [9 Y' u
{: D1 J8 i( r1 f% Y
/* The startup code goes first into FLASH */
J1 d% e5 i4 f8 r- e .isr_vector :! H R) ?5 I& U; R
{( E6 r, d' o! k( C
. = ALIGN(4);
4 B( G2 ~3 D* }# y$ x KEEP(*(.isr_vector)) /* Startup code */- N" W9 Z* C; N6 Q- q1 Y
. = ALIGN(4);- F* u0 D6 |5 R( A$ z, R
} >FLASH_ZW
6 Q! X# G* O# l8 J. l6 C% D O6 F
7 }; ^/ J3 q! C3 [2 d& \- E .nzw_code :
4 ^* c2 Q' s$ a' l* }4 C6 i/ o {
" t1 T/ A8 S# Z+ V" ^0 q b . = ALIGN(4);
& B' B+ S' O$ ^% J8 n7 ~*nzw_1.o (.text .text*);
( T! p' N9 ^( J E*nzw_2.o (.text .text*);
- X; }. F+ v7 U5 d! a2 D4 Z. = ALIGN(4);
# ?* Y6 T) ~; q0 |/ y } > FLASH_NZW
3 q) L% e: H/ O: H [2 }2 R8 ` |6 v2 `# [
+ r' @/ k* D; k. _1 y+ f /* The program code and other data goes into FLASH */; _- d s2 ~ N1 L7 n
.text :
# x) d; S. R1 F8 v/ d" C! T# {8 X7 @8 s {2 m! a) n7 J% M
. = ALIGN(4);
/ W' ` P& C, t; ?7 q1 z *(.text) /* .text sections (code) */" R- p3 S$ ?6 e9 o4 _
*(.text*) /* .text* sections (code) */
2 D h$ C: Y! B! y *(EXCLUDE_FILE (*nzw_1.o *nzw_2.o) .text .text*)+ n, ?" {; r" r- L
*(.glue_7) /* glue arm to thumb code */0 |/ E# m" J2 h; h# s* g9 g
*(.glue_7t) /* glue thumb to arm code */+ u9 I" s! @* e& s) p6 X
*(.eh_frame)
4 |- K5 `8 l3 a+ g* {3 ?
* _" k: L: B- u. W) t KEEP (*(.init))* ?! j# P/ o+ F8 F! N- J
KEEP (*(.fini))
( L' W$ Y+ R: @: ~3 ?( V4 ~2 C# g
2 x- n9 t4 p5 x s9 Y7 [0 F4 Q; l . = ALIGN(4);
5 O- s; `' R" P) W. j _etext = .; /* define a global symbols at end of code */- s% i+ O* M( S- p# r, x2 U7 n
} >FLASH_ZW
9 e- Z C o- J- p7 u, r: x% S
+ k5 w( K) I( l y' c% H6 {2 ? /* Constant data goes into FLASH */
* K4 n, R) o" n5 D+ M+ |0 R .rodata :
* U$ \" Z6 Z0 r( n. \7 x {
- s6 T2 X+ c+ G' F3 h . = ALIGN(4);8 m4 R; T' |( b1 d: X
*(.rodata) /* .rodata sections (constants, strings, etc.) */
2 r! L# b6 Y# ? *(.rodata*) /* .rodata* sections (constants, strings, etc.) */
# `5 T5 V( n. _, \2 b$ X' G: M$ | . = ALIGN(4);( [& r/ e, V% V( a m! q* H D
} >FLASH_ZW
8 z8 e: V9 u# x* w; y' f2 Y+ m( g# l# r8 V2 o! |9 v
.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH_ZW$ ^$ C- d7 M0 B! ?
.ARM : {
6 R( m' J9 Y5 G8 }9 O __exidx_start = .;7 d4 U! Y+ d$ \! q! y$ H1 S% O6 X, Z
*(.ARM.exidx*)$ _6 k6 {0 ]- |. Y- X. v
__exidx_end = .;
& {) t3 E% @, n) v3 s } >FLASH_ZW/ r1 R# C& r/ }+ }
( J( R- Q2 w6 h0 T% P5 g" Z u3 w
.preinit_array :
- H4 v4 t' ~- b- R4 n2 a, d {6 }7 {1 C! f4 q! C) Y" |" H! J
PROVIDE_HIDDEN (__preinit_array_start = .);
- Z' {% N' f5 ]3 s) M) [ KEEP (*(.preinit_array*))0 M0 \% J& C! l& ^: F
PROVIDE_HIDDEN (__preinit_array_end = .);% @& x# T B; W. n, C. U6 O
} >FLASH_ZW/ U' f$ }1 o- P2 o! G) y
.init_array :
% G! f% Y8 S; K8 }+ m0 p" U {) T% z, p" J( v& r) n
PROVIDE_HIDDEN (__init_array_start = .);& `4 t X; S {. M" \
KEEP (*(SORT(.init_array.*)))
& R" O6 D+ g: {( F+ T- J KEEP (*(.init_array*))
0 @& S$ i) c: |* x5 \2 F% e- n PROVIDE_HIDDEN (__init_array_end = .);, W* J4 a+ U6 r0 B- W
} >FLASH_ZW
8 ~$ ~/ I$ {: e9 K. `. U .fini_array :7 h: F2 K' B% F* c& u9 V" G
{& v8 }$ [: Q9 H, s' q1 N$ z
PROVIDE_HIDDEN (__fini_array_start = .);+ @5 l. |6 N# B2 v! [
KEEP (*(SORT(.fini_array.*)))- ^( X+ i% w$ C" B
KEEP (*(.fini_array*))" |# `& J5 h# O- m6 y2 j1 ?
PROVIDE_HIDDEN (__fini_array_end = .);
! d! x& ?( ?! o* ?9 G' ]$ v, M$ e# N } >FLASH_ZW
5 ]5 R5 S3 x+ T4 o' A6 @
! j* Z" J. V3 z) f9 Y: H /* used by the startup to initialize data */
# z) v5 k) H# w' E% W _sidata = LOADADDR(.data);, I& x0 i c$ h
- T9 @! s8 K& D3 o6 A+ k5 r _ /* Initialized data sections goes into RAM, load LMA copy after code */
# U1 c; J' p7 A1 \6 @0 x8 h .data :
3 _2 s& W% W4 z' \7 o+ _2 t9 ?; B4 ? {+ _- L" J, l. f' T
. = ALIGN(4);
, ~0 U$ `% x: p9 b _sdata = .; /* create a global symbol at data start */3 | K; c: f9 e& Y' V- ?% h
*(.data) /* .data sections *// s% ?6 z) W l6 ?! P
*(.data*) /* .data* sections */3 l/ E+ i3 b: e! E
' A H8 |3 Y. U! j. V. t3 }
. = ALIGN(4);3 o2 i, J; g: [4 T
_edata = .; /* define a global symbol at data end */6 B! n0 v a: I- M
} >RAM AT> FLASH_ZW, A) @8 v2 B8 G# I
: Z% S2 c" \$ Q% \9 }" P /* Uninitialized data section */) Q% {! Q: W A: _) S8 ?
. = ALIGN(4);
* D7 Q2 c1 ~8 C8 _ .bss :1 U3 M4 ^- [4 U# o9 x
{5 y7 O8 i( ?3 b' e! W# ]
/* This is used by the startup in order to initialize the .bss secion */( H( I( q: V1 x7 q
_sbss = .; /* define a global symbol at bss start */$ \! N! q0 W! o+ A
__bss_start__ = _sbss;
+ v+ l4 V) Z0 X *(.bss)
o9 `) C! {) ?% _. X9 r1 s O *(.bss*)
) ~2 g3 Q" V0 K& e1 j: x *(COMMON)4 F8 G. Z A. V$ f
, ~; Y2 a/ C+ \2 s3 \! I . = ALIGN(4);3 o( _$ a, K2 s- [# Y3 u
_ebss = .; /* define a global symbol at bss end */. W0 N5 B+ J J& o M: o' M9 J
__bss_end__ = _ebss;
8 {4 W3 v/ e. G2 b4 I- E& v } >RAM) K, t( {$ p! O' M" r/ G6 E
9 }6 O0 l7 F5 r$ G0 n
/* User_heap_stack section, used to check that there is enough RAM left */
6 _: d( Y, n) P" y6 H7 C6 |- E, x ._user_heap_stack :7 ^2 i; F6 Y4 d: v
{
' S) H+ O$ {1 K; ] . = ALIGN(4);
& j/ s2 V! t: z) k; ^4 | PROVIDE ( end = . );
$ m7 X/ N$ t; U$ p& ] PROVIDE ( _end = . );+ {/ H1 b+ [- `
. = . + _Min_Heap_Size;
# `. k8 P5 g$ A . = . + _Min_Stack_Size;3 |% N+ X, l# e+ x4 J
. = ALIGN(4);3 k+ w# P+ L" T5 a, F) t! ?
} >RAM
' u3 U3 Y$ _& f/ v& v5 N9 f
8 [* _2 Z( I) n7 C' ~. ? /* Remove information from the standard libraries */
' d0 j* Q# k* n; O9 O- p! ?$ @ /DISCARD/ :8 e n3 s1 _6 r, z; y
{
! J+ q. }' h# ]# B E7 P libc.a ( * )
" c; @$ N- m& }9 X libm.a ( * )7 ^) A7 t5 `% F8 g& K4 j
libgcc.a ( * ). }5 L1 v+ Q1 u8 n2 B# _& z
}% ~) d* c) Z: n# z( l9 }- T
4 D/ F8 A+ f. }) _
.ARM.attributes 0 : { *(.ARM.attributes) }
% f/ m/ w5 @4 C8 P2 |}
0 q5 m1 ^) L/ h+ a8 @5 C& A+ w" D/ q
a& f5 N% j8 A, X- }0 r5 {" G4 k |
|