Hello,
I used to include a simple code, mentioned probably on this mailing list:
extern void main( void );
void _sdcc_gsinit_startup(void)
{
__asm pagesel _main __endasm;
__asm goto _main __endasm;
}
This eliminates the gsinit routines from sdcc library. Carefully use it! If
your code has variables which get default value at startup, that won't work
after you link this code above.
Example:
char i = 10 ; // This is not working if you link the gsinit routine above
Zsolt
2014-10-18 1:27 GMT+02:00 Oli <h2obr...@gmail.com>:
> Hello
>
> Today I tried to recompile an old project for a pic16f690 and the thing
> was suddenly too big too fit in the pic :
> error: no target memory available for section "code_happyhourjuhe"
>
> As I changed some of the code I tried to reduce the size, but I had to
> remove the complete main function (half of the code) to make it compile.
>
> After some drinking I had the idea to try the old compiler version I was
> using back in 2011.
>
> Here's a comparison of the estimated file sizes for different sdcc
> versions.
>
>
> SDCC : pic16/pic14 3.4.0/*rc1*/ #8960 (Mar 10 2014)
>
> bin/obj/EEPROM.asm ; 22+ 12 = 34 instructions (
> 92 byte)
> bin/obj/Globals_DEF.asm ; 0+ 0 = 0 instructions (
> 0 byte)
> bin/obj/I2C_adapter.asm ; 1061+ 355 = 1416 instructions
> ( 3542 byte)
> bin/obj/I2C_slave.asm ; 164+ 61 = 225 instructions (
> 572 byte)
> bin/obj/IncSwitch.asm ; 23+ 7 = 30 instructions (
> 74 byte)
> bin/obj/main.asm ; 1060+ 371 = 1431 instructions
> ( 3604 byte)
> bin/obj/ServoFunctions.asm ; 102+ 32 = 134 instructions (
> 332 byte)
> bin/obj/StoreLoadValues.asm ; 231+ 73 = 304 instructions (
> 754 byte)
>
>
>
> SDCC 3.0.1 release
>
> in/obj/EEPROM.asm ; 22+ 12 = 34 instructions
> ( 92
> byte)
> bin/obj/Globals_DEF.asm ; 0+ 0 = 0 instructions (
> 0 byte)
> bin/obj/I2C_adapter.asm ; 917+ 313 = 1230 instructions
> ( 3086 byte)
> bin/obj/I2C_slave.asm ; 155+ 60 = 215 instructions (
> 550 byte)
> bin/obj/IncSwitch.asm ; 23+ 7 = 30 instructions (
> 74 byte)
> bin/obj/main.asm ; 1041+ 352 = 1393 instructions
> ( 3490 byte)
> bin/obj/ServoFunctions.asm ; 102+ 32 = 134 instructions (
> 332 byte)
> bin/obj/StoreLoadValues.asm ; 240+ 73 = 313 instructions (
> 772 byte)
>
>
>
> SDCC 3.0.0 release
>
> bin/obj/EEPROM.asm ; 22+ 12 = 34 instructions (
> 92 byte)
> bin/obj/Globals_DEF.asm ; 0+ 0 = 0 instructions (
> 0 byte)
> bin/obj/I2C_adapter.asm ; 916+ 175 = 1091 instructions
> ( 2532 byte)
> bin/obj/I2C_slave.asm ; 155+ 54 = 209 instructions (
> 526 byte)
> bin/obj/IncSwitch.asm ; 23+ 7 = 30 instructions (
> 74 byte)
> bin/obj/main.asm ; 1030+ 201 = 1231 instructions
> ( 2864 byte)
> bin/obj/ServoFunctions.asm ; 100+ 28 = 128 instructions (
> 312 byte)
> bin/obj/StoreLoadValues.asm ; 242+ 41 = 283 instructions (
> 648 byte)
>
>
> As you can see, the estimated file size of main.asm for example
> increases by ~20% from version 3.0.0 (2.8 kb) to version 3.0.1 (3.4kb)
> and another ~3% from version 3.0.1 to the version I last pulled from svn
> (3.6 kB).
>
> Did you introduce some new optimisation switches since version 3.0.0 or
> changed default libraries or stuff?
>
> The commandline I'm currently using looks like this :
> sdcc -o bin/obj/main.o -mpic14 -p16f690 -D__16F690__ --use-non-free
> --opt-code-speed -I./src -I../../lib/16F690 -c -c src/main.c
>
> (the opt-code-speed or size switch does the same as ever, nothing)
>
>
>
> The code compiles fine with version 3.0.0.
>
> Thank for any advice!
>
> Cheeeeers,
> Oli
>
>
>
> ------------------------------------------------------------------------------
> Comprehensive Server Monitoring with Site24x7.
> Monitor 10 servers for $9/Month.
> Get alerted through email, SMS, voice calls or mobile push notifications.
> Take corrective actions from your mobile device.
> http://p.sf.net/sfu/Zoho
> _______________________________________________
> Sdcc-user mailing list
> Sdcc-user@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/sdcc-user
>
--
~~~~~~~~~~~~~~~~
http://galzsolt.zzl.org
------------------------------------------------------------------------------
Comprehensive Server Monitoring with Site24x7.
Monitor 10 servers for $9/Month.
Get alerted through email, SMS, voice calls or mobile push notifications.
Take corrective actions from your mobile device.
http://p.sf.net/sfu/Zoho
_______________________________________________
Sdcc-user mailing list
Sdcc-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/sdcc-user
