Bootloader: problem with #org directive!

[Guest]

Hi,
I am trying to write a bootloader for PIC18F6680.
I have started with an example from this forum but I have a problem.
I post the code and the error.

Note: if I comment the #int routine it compiles correctly!
Thank you in advance...

It follows the code.

"myboot.h":

#define RESET_VECTOR 0x0000
#define HIGH_INT_VECTOR 0x0008
#define NORMAL_INT_VECTOR 0x0018
#define INTERRUPT_REMAP_END HIGH_INT_VECTOR + 0x1B

#define LOADER_START INTERRUPT_REMAP_END+1
#define LOADER_END 0x07ff
#define LOADER_SIZE 0x1ff
#define LOADER_RESET RESET_VECTOR
#define LOADER_HIGH_INT LOADER_START + RESET_VECTOR
#define LOADER_NORMAL_INT LOADER_HIGH_INT + 0x10
#define LOADER_INT_REMAP_END LOADER_HIGH_INT + 0x1B

#define APPLICATION_START LOADER_END
#define APPLICATION_RESET APPLICATION_START + RESET_VECTOR
#define APPLICATION_HIGH_INT APPLICATION_START + HIGH_INT_VECTOR
#define APPLICATION_NORMAL_INT APPLICATION_START + NORMAL_INT_VECTOR
#define APPLICATION_INT_REMAP_END APPLICATION_HIGH_INT + 0x1B


#ifdef MY_BOOTLOADER
#build(reset=LOADER_RESET)
#build(interrupt=LOADER_HIGH_INT)
#else
#build(reset=APPLICATION_RESET, interrupt=APPLICATION_HIGH_INT)
#org 0, LOADER_END {}
#endif



"main.c":

#include <18f6680.h>
#fuses H4,NOWDT,NOLVP,NOPUT,BROWNOUT
#use Delay(Clock=40000000)
#use RS232(BAUD=9600,XMIT=PIN_C6,RCV=PIN_C7,BRGH1OK,ERRORS) //ok

#define MY_BOOTLOADER
#include <myboot.h>

#org HIGH_INT_VECTOR, INTERRUPT_REMAP_END
void isr_relocate(void) {
#asm
// Address 0x0008 is the hardware High priority interrupt
TSTFSZ BootloaderActive // if bootloader active
GOTO LOADER_HIGH_INT // then jump to bootloader ISR
GOTO APPLICATION_HIGH_INT // else jump to application ISR

NOP // Just filling memory
NOP
NOP

// Address 0x0018 is the hardware Low priority interrupt
TSTFSZ BootloaderActive // if bootloader active
GOTO LOADER_NORMAL_INT // then jump to bootloader ISR
GOTO APPLICATION_NORMAL_INT // else jump to application ISR
#endasm
}

#int_rtcc
void foo()
{
int i=0;
i=i+1;
}

#org LOADER_START, LOADER_END default

#define BUFFER_LEN_LOD 64
int buffidx;
char buffer[BUFFER_LEN_LOD];

#define ACKLOD 0x06
#define XON 0x11
#define XOFF 0x13

unsigned int atoi_b16(char *s);
void load_program(void);

void main(void)
{
if(!input(PIN_B1))
{
load_program();
}
goto_address(APPLICATION_START);
}

#org default

errors:
Executing: "C:\Programmi\PICC\Ccsc.exe" "main.c" +FH +DF +LN +T -A +M +Z +Y=9 +EA
--- Info 300 "C:\Documents and Settings\Dino\Documenti\Microlab\Bootloader18F\main.c" Line 168(0,7): More info: Segment at 00000-00006 (0004 used) Priv
--- Info 300 "C:\Documents and Settings\Dino\Documenti\Microlab\Bootloader18F\main.c" Line 168(0,7): More info: Segment at 00008-00022 (0000 used) Priv
--- Info 300 "C:\Documents and Settings\Dino\Documenti\Microlab\Bootloader18F\main.c" Line 168(0,7): More info: Segment at 00024-007FE (0000 used) Priv
--- Info 300 "C:\Documents and Settings\Dino\Documenti\Microlab\Bootloader18F\main.c" Line 168(0,7): More info: Segment at 00800-0FFFE (0000 used)
--- Info 300 "C:\Documents and Settings\Dino\Documenti\Microlab\Bootloader18F\main.c" Line 168(0,7): More info: Attempted to create: 00024-000B6 for ISR
*** Error 126 "C:\Documents and Settings\Dino\Documenti\Microlab\Bootloader18F\main.c" Line 168(0,7): Invalid ORG range
1 Errors, 0 Warnings.

[Ttelmah]

The problem is in understanding what the build options 'do'. When you specify an address in 'build', this is where the system will put the 'int_global' handler. Now you then try to locate your 'isr_relocate' code here, and hence there is a clash...
You need to write your own 'int_global' routine. This will then automatically be put directly at the address specified in the build, and it can execute the jump to the real handler routine.

Best Wishes

[Guest]

[Ttelmah]

If you declare:

[ckielstra]

The original code as posted in http://www.ccsinfo.com/forum/viewtopic.php?p=62993#62993 didn't compile when an interrupt handler was added to bootload.c. It seems like the compiler wants to create a section for the interrupts in an area that is already reserved. I suspect this is related to a compiler bug in v3.245 but couldn't get a grip at it. The easiest workaround is to remove the line

[Guest]

I am using the compiler version 3.249, I believe, looking assembly code generated, the compiler ignores some pre-compiler rules!

Thank you.