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specify an function to absolute address and LMA equ VMA
http://forum.andestech.com/viewtopic.php?f=25&t=911
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Author:  maolj [ Mon Jan 12, 2015 12:14 pm ]
Post subject:  specify an function to absolute address and LMA equ VMA

specify an function to absolute address and LMA equ VMA

c code:

Code:
/*
* patchprog.c
*
*/

int func2(int) __attribute__ ((section (".FUNC_PATCH")));

int func2(int x){
   return x*100;
}

int main()
{
   func2(100);
   return 0;
}



sag code:
Code:
USER_SECTIONS .FUNC_PATCH

REG1 0x0 0x10000
{
   EXEC1  0x0 0x10000
   {
      * (+RO, +RW, +ZI)
      STACK = 0x3000000
   }
}

REG2 0x500020 0x1000
{
   EXEC2  0x500020 0x1000
   {
      * (.FUNC_PATCH)
   }
}


Execute nds_ldsag.exe
Code:
$ /cygdrive/d/Andestech/AndeSight201MCU/utils/nds_ldsag.exe lma_eq_vma.sag -o lma_eq_vma.ld
The output file is placed "lma_eq_vma.ld"




result :
Sections:
Idx Name Size VMA LMA File off Algn
0 .nds32_init 00000002 00000000 00000000 00001000 2**0
CONTENTS, ALLOC, LOAD, READONLY, CODE
1 .init 00000004 00000002 00000002 00001002 2**0
CONTENTS, ALLOC, LOAD, READONLY, CODE
2 .text 00000100 00000008 00000008 00001008 2**2
CONTENTS, ALLOC, LOAD, READONLY, CODE
3 .ex9.itable 00000004 00000108 00000108 00001108 2**2
CONTENTS, ALLOC, LOAD, READONLY, CODE
4 .eh_frame 00000004 00000120 00000120 00001120 2**2
CONTENTS, ALLOC, LOAD, DATA
5 .ctors 00000004 00000124 00000124 00001124 2**2
CONTENTS, ALLOC, LOAD, DATA
6 .dtors 00000004 00000128 00000128 00001128 2**2
CONTENTS, ALLOC, LOAD, DATA
7 .jcr 00000004 0000012c 0000012c 0000112c 2**2
CONTENTS, ALLOC, LOAD, DATA
8 .FUNC_PATCH 0000000e 00500020 00500020 00002020 2**1
CONTENTS, ALLOC, LOAD, READONLY, CODE

Attachments:
LMA_VMA.zip [36.11 KiB]
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