Attempting to run my first program: 0x80020148

[G43L]

Hi,

I use devKitPSP release 11 to compile the following program:

Code: Select all

#include <pspkernel.h>
#include <pspdebug.h>
#include <pspdisplay.h>

PSP_MODULE_INFO&#40;"Hello", 0, 1, 1&#41;;

/* Exit callback */
int exit_callback&#40;int arg1, int arg2, void *common&#41;
&#123;
    sceKernelExitGame&#40;&#41;;

    return 0;
&#125;

/* Callback thread */
int CallbackThread&#40;SceSize args, void *argp&#41;
&#123;
    int cbid;

    cbid = sceKernelCreateCallback&#40;"Exit Callback", exit_callback, NULL&#41;;
    sceKernelRegisterExitCallback&#40;cbid&#41;;

    sceKernelSleepThreadCB&#40;&#41;;

    return 0;
&#125;

/* Sets up the callback thread and returns its thread id */
int SetupCallbacks&#40;void&#41;
&#123;
    int thid = 0;

    thid = sceKernelCreateThread&#40;"update_thread", CallbackThread, 0x11, 0xFA0, 0, 0&#41;;
    if &#40;thid >= 0&#41;
    &#123;
        sceKernelStartThread&#40;thid, 0, 0&#41;;
    &#125;

    return thid;
&#125;

int main&#40;int argc, char **argv&#41;
&#123;
    pspDebugScreenInit&#40;&#41;;
    SetupCallbacks&#40;&#41;;

    while &#40;1&#41;
    &#123;
        pspDebugScreenPrintf&#40;"Hello PSP!"&#41;;
        sceDisplayWaitVblankStart&#40;&#41;;
    &#125;

    sceKernelSleepThread&#40;&#41;;

    return 0;
&#125;

//  EOF

Then I use make_eboot.bat to create EBOOT.PBP:

Code: Select all

"C:\devkitPSP\bin\mksfo.exe" Hello title.sfo
"C:\devkitPSP\bin\psp-fixup-imports.exe" hello.elf
"C:\devkitPSP\bin\psp-strip.exe" hello.elf -o stripped.elf
"C:\devkitPSP\bin\pack-pbp.exe" EBOOT.PBP title.sfo NULL NULL NULL NULL NULL stripped.elf NULL
del title.sfo
del stripped.elf

When I try to load the program with PSPLink 3.0 oe on CFW 5.50 GEN-D2 on a PSP 1000 I obtain this:

Code: Select all

host0:/> EBOOT.PBP
Failed to Load/Start module 'host0:/EBOOT.PBP' Error: 0x80020148
host0:/>

Code: Select all

host0:/src/> d ./EBOOT.PBP
PSPLink USB GDBServer (c) 2k7 TyRaNiD
host0:/src/> Invalid ELF magic

What can I do?

Thanks in advance,
G43L

[jojojoris]

With psplink you start a .prx not an EBOOT.PBP .
A prx file is like a exe file on windows. the EBOOT.PBP is just a container with some additional info.

in your makefile you must have the line:

BUILD_PRX=1

so the compiler will create a prx.

PS.
you are using a old toolchain.
download minpspw and remove devkitPRO to get a more up to date one.
http://minpspw.sourceforge.net/

[G43L]

Hi,

I've uninstalled devkitPSP and installed minpspw v0.9.5

With the following in the Makefile:

Code: Select all

BUILD_PRX=1
...
PSPSDK = $(shell psp-config --pspsdk-path)
include $(PSPSDK)/lib/build_prx.mak

I obtain the warning message:

Code: Select all

warning||cannot find entry symbol module_start; defaulting to 0000000000000000|

and undefined references errors...


Thanks for any help,
G43L

[G43L]

Hi,

I've solved all my problems...




Here is the Makefile I use

Code: Select all

TARGET = hello
OBJS = hello.o snprintf.o

PSP_ONLY = 1

# Define to build this as a prx (instead of a static elf)
BUILD_PRX = 1
# Define the name of our custom exports (minus the .exp extension)
PRX_EXPORTS = exports.exp

USE_KERNEL_LIBC = 1
USE_KERNEL_LIBS = 1

INCDIR =
CFLAGS = -DNOEXIT -DFPM_MIPS -O2 -G0 -Wall -fno-pic
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)

LIBDIR =

PSPSDK = $(shell psp-config --pspsdk-path)
include $(PSPSDK)/lib/build_prx.mak

LIBS += -lpspge_driver -lpspgu

I'm also using http://www.ijs.si/software/snprintf/ as implementation of vsnprintf. I have just modified lines 535 to 541 of snprintf.c:

Code: Select all

#if defined(NEED_SNPRINTF_ONLY)
int portable_snprintf(char *str, size_t str_m, const char *fmt, /*args*/ ...) {
#elif defined(PSP_ONLY)
int vsnprintf(char *str, size_t str_m, const char *fmt, va_list ap) {
#else
int portable_vsnprintf(char *str, size_t str_m, const char *fmt, va_list ap) {
#endif

Now I can start to modify QHACK for the PSP :~)

G43L

[jojojoris]

use include $(PSPSDK)/lib/build.mak instead of build_prx.mak

I don't exactly know the difference but it does some things to ensure that it will start properly.

in your main.c (or something) cou have to use
PSP_MODULE_INFO
PSP_MAIN_THREAD_ATTR
PSP_HEAP_SIZE_KB

[G43L]

use include $(PSPSDK)/lib/build.mak instead of build_prx.mak

I don't exactly know the difference but it does some things to ensure that it will start properly.

in your main.c (or something) cou have to use
PSP_MODULE_INFO
PSP_MAIN_THREAD_ATTR
PSP_HEAP_SIZE_KB

I've done all the changes and it is perfectly working. Thank you very much for the advises!

QHACK for the PSP:



G43L