Warning :no matching section

Lina

Prodigy 110 points

Other Parts Discussed in Thread: TMS320C6727

Dear all,

I'm trying to build a project about TMS320C672x Secondary Boot on the following system:

TMS320C6727

Code Composer Studio Version: 5.1.0.09000 and the compiler version is 7.3.1

Spectrum Digital XDS560V2 STM USB Emulator

I came across with two warnings in the linker Command file . Here is the code.

When linking, there are two warnings:

TISecondaryBootPadk,cmd is the linker command file. TISecondaryBootPadk.c is included in the project.

Could anyone help me understand where is the mistake?

Thanks

Lina

over 13 years ago

0 George Mock over 13 years ago

TI__Guru**** 251230 points

The first warning indicates that none of the input files or libraries seen by the linker have an input section with the name .TIBoot.

The second warning indicates the file .\TISecondaryBootPadk.obj does not have any input section named .switch. I presume this is the .switch section generated by the compiler. The compiler does not always generate a .switch section. The .switch section contains jump tables related to switch statements. However, not every switch statement is implemented with a jump table. Thus, it is possible to have a source file with switch statements but no .switch section.

Thanks and regards,

-George

0 Lina over 13 years ago in reply to George Mock

Prodigy 110 points

Dear George

Thank you for your reply

As for the first suggestion, I have attached a input file named TISecondaryBootPADK.c to this post, which has a section with the name .TIBoot.

Fullscreen 4073.TISecondaryBootPADK .c Download

/**============================================================================
*@file TISecondaryBoot.c
*@desc This file contains the code that implements a secondary boot load
*      for TMS320C672x devices.
*
*==============================================================================
* Copyright (C) 2004-2005 Texas Instruments Incorporated. 
* Use of this software us controlled by the terms and conditions found in the
* license agreement under which this software has been supplied
*=============================================================================*/
/*===========================================================================*/
/* This software is provided under the following                             */
/* License Agreement:                                                        */
/*===========================================================================*/
/* THIS PROGRAM IS PROVIDED "AS IS". TI MAKES NO WARRANTIES OR               */
/* REPRESENTATIONS, EITHER EXPRESS, IMPLIED OR STATUTORY,                    */
/* INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS              */
/* FOR A PARTICULAR PURPOSE, LACK OF VIRUSES, ACCURACY OR                    */
/* COMPLETENESS OF RESPONSES, RESULTS AND LACK OF NEGLIGENCE.                */
/* TI DISCLAIMS ANY WARRANTY OF TITLE, QUIET ENJOYMENT, QUIET                */
/* POSSESSION, AND NON-INFRINGEMENT OF ANY THIRD PARTY                       */
/* INTELLECTUAL PROPERTY RIGHTS WITH REGARD TO THE PROGRAM OR                */
/* YOUR USE OF THE PROGRAM.                                                  */
/*                                                                           */
/* IN NO EVENT SHALL TI BE LIABLE FOR ANY SPECIAL, INCIDENTAL,               */
/* CONSEQUENTIAL OR INDIRECT DAMAGES, HOWEVER CAUSED, ON ANY                 */
/* THEORY OF LIABILITY AND WHETHER OR NOT TI HAS BEEN ADVISED                */
/* OF THE POSSIBILITY OF SUCH DAMAGES, ARISING IN ANY WAY OUT                */
/* OF THIS AGREEMENT, THE PROGRAM, OR YOUR USE OF THE PROGRAM.               */
/* EXCLUDED DAMAGES INCLUDE, BUT ARE NOT LIMITED TO, COST OF                 */
/* REMOVAL OR REINSTALLATION, COMPUTER TIME, LABOR COSTS, LOSS               */
/* OF GOODWILL, LOSS OF PROFITS, LOSS OF SAVINGS, OR LOSS OF                 */
/* USE OR INTERRUPTION OF BUSINESS. IN NO EVENT WILL TI'S                    */
/* AGGREGATE LIABILITY UNDER THIS AGREEMENT OR ARISING OUT OF                */
/* YOUR USE OF THE PROGRAM EXCEED FIVE HUNDRED DOLLARS                       */
/* (U.S.$500).                                                               */
/*                                                                           */
/* Unless otherwise stated, the Program written and copyrighted              */
/* by Texas Instruments is distributed as "freeware".  You may,              */
/* only under TI's copyright in the Program, use and modify the              */
/* Program without any charge or restriction.  You may                       */
/* distribute to third parties, provided that you transfer a                 */
/* copy of this license to the third party and the third party               */
/* agrees to these terms by its first use of the Program. You                */
/* must reproduce the copyright notice and any other legend of               */
/* ownership on each copy or partial copy, of the Program.                   */
/*                                                                           */
/* You acknowledge and agree that the Program contains                       */
/* copyrighted material, trade secrets and other TI proprietary              */
/* information and is protected by copyright laws,                           */
/* international copyright treaties, and trade secret laws, as               */
/* well as other intellectual property laws.  To protect TI's                */
/* rights in the Program, you agree not to decompile, reverse                */
/* engineer, disassemble or otherwise translate any object code              */
/* versions of the Program to a human-readable form.  You agree              */
/* that in no event will you alter, remove or destroy any                    */
/* copyright notice included in the Program.  TI reserves all                */
/* rights not specifically granted under this license. Except                */
/* as specifically provided herein, nothing in this agreement                */
/* shall be construed as conferring by implication, estoppel,                */
/* or otherwise, upon you, any license or other right under any              */
/* TI patents, copyrights or trade secrets.                                  */
/*                                                                           */
/* You may not use the Program in non-TI devices.                            */
/*===========================================================================*/
#include <TISecondaryBoot.h>
#include "PADK.h"

typedef struct {
	unsigned int *regPtr;
	unsigned int mask;
	unsigned int mode;
}TIBootPinSetupObj;

/*==================================================================*/
/* external Symbol references                                       */
/*==================================================================*/
extern unsigned int TIBOOT_SEC_SIZE;
extern unsigned int TIBOOT_SEC_RUN_ADDR;

#pragma DATA_SECTION(TISecondaryBootStatus,".bss:tiSbootBss")

TISecondaryBootStatusObj TISecondaryBootStatus;

#pragma DATA_SECTION(TISecondaryBootStack,".bss:tiSbootBss")
#pragma DATA_ALIGN(TISecondaryBootStack,128);
asm("_TISecondaryBootStack_Size    .set 0x100");//256
unsigned int TISecondaryBootStack[64];
static unsigned int ix;

                              
/*==================================================================*/
/* Function Prototypes                                              */
/*==================================================================*/ 
void TISecondaryBoot_abort(unsigned int flag); 
unsigned int TISecondaryBoot_updateCRC(unsigned int *data_ptr, 
                                       unsigned int section_size, 
                                       unsigned int crc);

void TISecondaryBoot_setReg(unsigned int *regPtr, unsigned int mask, unsigned int mtype);
void TISecondaryBoot_parseAisStream(void);
unsigned TISecondaryBoot_fetchAis(void);

#pragma CODE_SECTION(TISecondaryBoot_bootstart,".TIBootStrap")



void TISecondaryBoot_bootstart(void)
{
   asm("	.global _TISecondaryBootStack, _TISecondaryBootStack_Size, $bss");

/*------------------------------------------------------------------------*/
/* SET UP THE STACK POINTER IN B15.                                       */
/* THE STACK POINTER POINTS 1 WORD PAST THE TOP OF THE STACK, SO SUBTRACT */
/* 1 WORD FROM THE SIZE. ALSO THE SP MUST BE ALIGNED ON AN 8-BYTE BOUNDARY*/
/*------------------------------------------------------------------------*/
   asm("	   MVKL		   _TISecondaryBootStack + _TISecondaryBootStack_Size - 4, SP");
   asm("	   MVKH		   _TISecondaryBootStack + _TISecondaryBootStack_Size - 4, SP");
   asm("	   AND		   ~7,SP,SP");

/*------------------------------------------------------------------------*/
/* SET UP THE GLOBAL PAGE POINTER IN B14.                                 */
/*------------------------------------------------------------------------*/
   asm("	   MVKL		   $bss,DP");
   asm("	   MVKH		   $bss,DP");
    
    /*================================================================*/
    /* Copy remainder of bootloader code                              */
    /*================================================================*/
    
    TISecondaryBootStatus.aisStreamPtr = (unsigned int *)TIBOOT_AIS_STREAM_START_ADDRESS;
                 
    TISecondaryBootStatus.sec_address = &TIBOOT_SEC_RUN_ADDR;
    TISecondaryBootStatus.sec_size = ((unsigned int)&TIBOOT_SEC_SIZE);
    for(ix=0;ix<((TISecondaryBootStatus.sec_size)/4);++ix){
        *TISecondaryBootStatus.sec_address++ = TISecondaryBoot_fetchAis();
    }

    TISecondaryBoot_parseAisStream();
}


#pragma CODE_SECTION(TISecondaryBoot_fetchAis,".TIBootStrap")
unsigned TISecondaryBoot_fetchAis(void) {
    unsigned int offset;
     // Set Page pointer

    offset = (unsigned int)(TISecondaryBootStatus.aisStreamPtr)  - ASYNC_CE;
    FPGA_REG(5) = offset >> 13;

    TISecondaryBootStatus.aisStreamPtr++;
    // Read the data
     return ((unsigned *)FPGA_FLASH)[(offset & 0x1FFF)/4];
}



#pragma CODE_SECTION(TISecondaryBoot_parseAisStream,".TIBoot")
void TISecondaryBoot_parseAisStream(void) {

    unsigned int ix;
    void (*jump_address)();

    TISecondaryBootStatus.bootCRC = 0;
    TISecondaryBootStatus.crcErr = 0;	
    TISecondaryBootStatus.currentAisCmd = 0xFFFFFFFF;
    TISecondaryBootStatus.lastAisCmd = 0xFFFFEEEE;
    
	while ( 1 )
    {
       TISecondaryBootStatus.currentAisCmd = TISecondaryBoot_fetchAis();
       TISecondaryBootStatus.bootErr = TISecondaryBootStatus.currentAisCmd;

       switch(TISecondaryBootStatus.currentAisCmd) 
       {
	       case SECTION_LOAD_COMMAND: 
	            { 
		        TISecondaryBootStatus.bootCRC = 0;
	                TISecondaryBootStatus.sec_address = (unsigned int *)TISecondaryBoot_fetchAis();
	                TISecondaryBootStatus.sec_size = TISecondaryBoot_fetchAis();
	                for ( ix = 0; ix < (TISecondaryBootStatus.sec_size/4); ix++ )
	                {
	                   TISecondaryBootStatus.sec_address[ix] = TISecondaryBoot_fetchAis();
	                }

					TISecondaryBootStatus.bootCRC = TISecondaryBoot_updateCRC((unsigned int *)&(TISecondaryBootStatus.sec_address),
                                                                        4, TISecondaryBootStatus.bootCRC);
					TISecondaryBootStatus.bootCRC = TISecondaryBoot_updateCRC(&(TISecondaryBootStatus.sec_size), 
                                                                        4, TISecondaryBootStatus.bootCRC);
	                TISecondaryBootStatus.bootCRC = TISecondaryBoot_updateCRC(TISecondaryBootStatus.sec_address,
	                                 TISecondaryBootStatus.sec_size, TISecondaryBootStatus.bootCRC);
	                	                
	                TISecondaryBootStatus.lastAisCmd = SECTION_LOAD_COMMAND;                    
	                break;
                }

	       case ENABLE_CRC_COMMAND: 
	            {
		          TISecondaryBootStatus.bootCRC = 0;
		          TISecondaryBootStatus.crcErr = 0;
		          TISecondaryBootStatus.lastAisCmd = ENABLE_CRC_COMMAND;
		          break;
	            }  
	       
	       case REQUEST_CRC_COMMAND:
	            {
		          TISecondaryBootStatus.expectedCrc = TISecondaryBoot_fetchAis();
		          TISecondaryBootStatus.lastValidAisCmdOffset = TISecondaryBoot_fetchAis();
		          if (TISecondaryBootStatus.expectedCrc != TISecondaryBootStatus.bootCRC){
		             TISecondaryBootStatus.aisStreamPtr = (unsigned int *)((char *)TISecondaryBootStatus.aisStreamPtr + 
                                                                  ((int) TISecondaryBootStatus.lastValidAisCmdOffset));
		             TISecondaryBootStatus.crcErr++;
	                  }
	              
	                  if (TISecondaryBootStatus.crcErr > 1) {
		             TISecondaryBoot_abort(TIBOOT_ERR_CRC);
	                  }

	                  TISecondaryBootStatus.lastAisCmd = REQUEST_CRC_COMMAND;
                          break;
                    }  
                
	       case JUMP_COMMAND:
	             {
		             
		          jump_address = (void (*)())(TISecondaryBoot_fetchAis());	 
		          (*jump_address)();
		          TISecondaryBootStatus.lastAisCmd = JUMP_COMMAND;
		          break;
                     }                                  
	                                   
	       case JUMP_CLOSE_COMMAND:
	             {
		          TISecondaryBootStatus.lastAisCmd = JUMP_CLOSE_COMMAND;
		             
		          jump_address = (void (*)())TISecondaryBoot_fetchAis();
		          (*jump_address)();
		          break;
                     }
                 
               case DEVICE_CFG_COMMAND:
                     {
	                 
	                 TIBootSetup();

	                 TISecondaryBootStatus.lastAisCmd = DEVICE_CFG_COMMAND;
	                 break;
                     }  

	        default :
	             {
                          TISecondaryBoot_abort(TIBOOT_ERR_INVALID_AIS_CMD);
		          break;
	             }
	   }
    }
}
 

#pragma CODE_SECTION(TISecondaryBoot_abort,".TIBoot")

void TISecondaryBoot_abort(unsigned int flag) {
	TISecondaryBootStatus.bootErr = (TISecondaryBootStatus.bootErr << 16) | flag;
	while(1) {
	}
}
        
      
#pragma CODE_SECTION(TISecondaryBoot_updateCRC,".TIBoot")

unsigned int TISecondaryBoot_updateCRC(unsigned int *data_ptr, unsigned int section_size, unsigned int crc)
{
	unsigned int n, crc_poly = 0x04C11DB7; /* CRC - 32 */
	unsigned int msb_bit;
	unsigned int residue_value;
	int bits;
	
	for( n = 0; n < (section_size>>2); n++ )
	{
		bits = 32;
		while( --bits >= 0 )
		{
			msb_bit = crc & 0x80000000;
			crc = (crc << 1) ^ ( (*data_ptr >> bits) & 1 );
			if ( msb_bit )
       		crc = crc ^ crc_poly;
		}
		data_ptr ++;
	}
		
	switch(section_size & 3)
	{
		case 0:
			break;
		case 1:
			residue_value = (*data_ptr & 0xFF) ;
			bits = 8;
			break;
		case 2:
			residue_value = (*data_ptr & 0xFFFF) ;
			bits = 16;
			break;
		case 3:
			residue_value = (*data_ptr & 0xFFFFFF) ;
			bits = 24;
			break;
	}
	
	if(section_size & 3)
	{

		while( --bits >= 0 )
		{
			msb_bit = crc & 0x80000000;
			crc = (crc << 1) ^ ( (residue_value >> bits) & 1 );
			if ( msb_bit ) crc = crc ^ crc_poly;
		}
	}
	return( crc );
}

As for the second suggestion, I have analysed the file "TISecondaryBootPADK.obj" and find the .switch section as follows:

So, I'm still confused about the warnings.

Thanks for your help!

0 Alberto Chessa over 13 years ago in reply to Lina

Mastermind 6670 points

Mybe in your executable there are not direct references to symbols allocated into that sections, so the linker remove it leaving the section empty. Look at the executable map file to see if the functions are linked.

If not present, try to add some a #pragma RETAIN or link with "--unused_section_elimination=off" (Linktime optimization settings)

0 Lina over 13 years ago in reply to Alberto Chessa

Prodigy 110 points

Thanks for your suggestions.

The executable map file is as follows:

When I use the CCS 3.3.38.2 to compile the same project, It has no warnings. But it does not support the emulator I mentioned before.

0 Alberto Chessa over 13 years ago in reply to Lina

Mastermind 6670 points

In the map file you shuold search the symbols you expect to be allocated into, not for the sections. For instance, sarch TISecondaryBoot_parseAisStream.

If one or more of these symbols are present, forget about my suggestion, oherwise it means the linker haven't link in your code.

Have you tried with "--unused_section_elimination=off"?

0 Lina over 13 years ago in reply to Alberto Chessa

Prodigy 110 points

I have searched the symbols which you said. They are not present.

And I tried with "--unused_section_elimination=off". There is an error:

0 Alberto Chessa over 13 years ago in reply to Lina

Mastermind 6670 points

Lina Zhang1 said:

I have searched the symbols which you said. They are not present.

And I tried with "--unused_section_elimination=off". There is an error:

Well, that option work with ELF, I don't know the correponding option for COFF. As alternative, try the #pragma RETAIN or add somewhere a dummy reference to your functions.

For instance, in your main, add something like:

volatile unsigned long just_to_force_link_in__;

...

extern void TISecondaryBoot_bootstart(void);

int main()

{

...

just_to_force_link_in__=(unsigned long)TISecondaryBoot_bootstart;

...

}