To create an homebrew that load and starts another homebrew

pegasus2000 · Post by **pegasus2000** » Mon Oct 29, 2007 7:44 pm

Is it possible to create an homebrew that load and starts another homebrew ?

A solution that would be useful for auto-updating software....

Is it possible ? How ?

mypspdev · Post by **mypspdev** » Mon Oct 29, 2007 9:10 pm

int sceKernelLoadExec (const char *file, struct SceKernelLoadExecParam *param)
?

Anti-QJ · Post by **Anti-QJ** » Tue Oct 30, 2007 9:23 am

For Auto-Updating on my programs I have it connect to a WLAN access point on startup then check a text file on my server that has the latest version. Then I do a if currentVersion > hostedVersion then download new version and replace the files needed.

Art · Post by **Art** » Tue Oct 30, 2007 11:57 am

A further development of that idea might also delete itself and start the
new version as well.
When I had a play with LoadExec, I think it only wanted to load elf files.

Cpasjuste · Post by **Cpasjuste** » Wed Oct 31, 2007 1:15 am

Yep i'm not able to load eboot with sceKernelLoadExec anymore but with the m33 sdk function "sctrlKernelLoadExecVSHMs2" there is no problem. Art is right, if you find a new version on the server, just overwrite your current eboot on psp (no problems since its loaded in ram) then exec it :

Code: Select all

void execEboot&#40;char *target&#41;
&#123;	
	struct SceKernelLoadExecVSHParam param;
			
	memset&#40;&param, 0, sizeof&#40;param&#41;&#41;;
			
	param.key = "game";
	param.size = sizeof&#40;param&#41;;
	param.args = strlen&#40;target&#41;+1;
	param.argp = target;

	sctrlKernelLoadExecVSHMs2&#40;target, &param&#41;;	

&#125;

moonlight · Post by **moonlight** » Wed Oct 31, 2007 4:01 am

Yeah, in 2.XX+, the original sceKernelLoadExec is now only able to execute something that is inside in an disc.

Moreover, it cannot execute eboot.bin, games have to execute boot.bin to do it, but the curious thing is that since some firmware (2.70 i think), the firmware really executes eboot.bin when the program passes the boot.bin string in the original loadexec, but it will reject it if games explicitily indicate eboot.bin. Curious and stupid sce things :)