Fonction Source Code

vcarriere · Post by **vcarriere** » Tue Jul 19, 2005 4:50 pm

First, i have to say that i'm new to psp programming (but not new to programming) and i was looking at the irda source code. I saw pspDebugScreenInit() and i looked at the pspdebug.h header file. I was wondering if the source of this fonction can be found as source or is it already pre-compiled? I'm just curious and i want to see what functions does because usually i had the .c file with the header file.

Thanks
Vincent

vcarriere · Post by **vcarriere** » Thu Jul 21, 2005 4:55 am

Anyone? i'm only trying to understand here...

deagle · Post by **deagle** » Thu Jul 21, 2005 5:00 am

look into the scr_printf.c file, just near the pspdebug.h file

vcarriere · Post by **vcarriere** » Thu Jul 21, 2005 5:38 am

I did a search in the whole cygwin folder and didn't find any scr_printf.c file nor any .c file at all (except in Sample).

Vincent

sexdwarf · Post by **sexdwarf** » Thu Jul 21, 2005 6:01 am

/usr/local/pspdev/psp/sdk/include/pspdebug.h

vcarriere · Post by **vcarriere** » Thu Jul 21, 2005 7:09 am

just found out that i didn't have the sources... so they must be already compiled... in linux, what's the equivalent of a dll with pre-compiled code?

sexdwarf · Post by **sexdwarf** » Thu Jul 21, 2005 7:18 am

yes, a dll type shard library is known as a shared object, extension .so

you could just grab the sources via svn,

Code: Select all

svn co svn&#58;//svn.pspdev.org/psp/pspsdk

vcarriere · Post by **vcarriere** » Thu Jul 21, 2005 8:33 am

Thx. So if i don't have the sources, where is the pre compiled code the compiler gets his fuctions from? I son't see any .so or .c files....

sorry if this is a noob question.

deagle · Post by **deagle** » Thu Jul 21, 2005 9:39 am

scr_printf.c :

Code: Select all

void pspDebugScreenInit&#40;&#41;
&#123;
   X = Y = 0;
   /* Place vram in uncached memory */
   g_vram_base = &#40;void *&#41; &#40;0x40000000 | sceGeEdramGetAddr&#40;&#41;&#41;;
   sceDisplaySetMode&#40;0, PSP_SCREEN_WIDTH, PSP_SCREEN_HEIGHT&#41;;
   sceDisplaySetFrameBuf&#40;&#40;void *&#41; g_vram_base, PSP_LINE_SIZE, PSP_PIXEL_FORMAT, 1&#41;;
   clear_screen&#40;bg_col&#41;;
   init = 1;
&#125;

vcarriere · Post by **vcarriere** » Thu Jul 21, 2005 12:02 pm

Yeah, i finally found them by downloading the sources from the server.

Now what i can't find anywhere is the sceDisplay* Functions source code....

I might be asking too many questions, but i've been working with uC and windows programming and usually i'm very close to the hardware i program for and i know anything i need to know.

Sorry.

vcarriere · Post by **vcarriere** » Thu Jul 21, 2005 12:05 pm

Is it possible that those are found in .s files wich are in Assembly language?

Shine · Post by **Shine** » Thu Jul 21, 2005 4:47 pm

vcarriere wrote:Now what i can't find anywhere is the sceDisplay* Functions source code....

The sce*-functions are provided by the Sony PSP kernel firmware. If you have the source code of it, let me know ;-)

vcarriere · Post by **vcarriere** » Thu Jul 21, 2005 5:24 pm

so basically, the sce functions are in the firmware and you send data at this address with the required parameters or you put the values in a accumulator and call the function...

hlide · Post by **hlide** » Sun Sep 10, 2006 8:44 pm

vcarriere wrote:so basically, the sce functions are in the firmware and you send data at this address with the required parameters or you put the values in a accumulator and call the function...

basically, if you want source code of sceDisplay* functions so badly, you MUST need to sign a NDA* with SONY and buy a very expensive licence.

"Suffisamment clair, non ?"*

*: Non Disclosure Agreement
*: [it's] clear enough, isn't it ?

dot_blank · Post by **dot_blank** » Mon Sep 11, 2006 9:27 am

can disassmble to get the source of a firmware function
use psplinks memory dump to help you best

adrahil · Post by **adrahil** » Mon Sep 11, 2006 11:04 pm

First, why would you need the source of those functions? the sceDisplay* functions aren't that interesting anyway.... They just interface with the LCD controller, sceLcdc..............
The only use of their disassembly would only be, in my opinion, to execute code on the Me, since you can't call sce* functions directly...