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phobox
Joined: 24 Mar 2008
Posts: 140
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 Posted: Mon Aug 25, 2008 1:59 am Post subject: modular application |
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i want to build a modular application base on various modules, like vsh.
Graphic library will be vlf.
i thought to load modules (in this example Plugin.prx) and call functions stored inside those.
this is the situation:
main module that loads all other submodules + vlf lib.
calling vlf functions from inside the main module is (ofcourse) everything ok.
BUT if i try to call a vlf function from a submodule it doesn't work.
here the main module (main.c)
| Code: |
#include <pspkernel.h>
#include <pspctrl.h>
#include <pspsdk.h>
#include <string.h>
#include <vlf.h>
PSP_MODULE_INFO("VLF_demo", 0x800, 2, 0);
PSP_MAIN_THREAD_ATTR(0);
int addText();
int OnCrossPress(void *param)
{
sceKernelExitGame();
return VLF_EV_RET_REMOVE_HANDLERS;
}
int OnSquarePress(void *param)
{
addText();
return VLF_EV_RET_NOTHING;
}
int app_main()
{
void *bi;
//vlfGuiSetBackgroundPlane(0xFF000000);
vlfGuiSetBackgroundSystem(0);
vlfGuiCacheResource("system_plugin");
vlfGuiCacheResource("system_plugin_fg");
vlfGuiSetModelSystem();
vlfGuiAddBatteryIconSystem(&bi, 10*1000*1000);
vlfGuiAddClock();
vlfGuiAddEventHandler(PSP_CTRL_CROSS, -1, OnCrossPress, NULL);
vlfGuiAddEventHandler(PSP_CTRL_SQUARE, -1, OnSquarePress, NULL);
while (1)
{
vlfGuiDrawFrame();
}
return 0;
}
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here the makefile of main module
| Code: |
release: all
psppacker 400I VLF_Sample.prx
TARGET = VLF_Sample
OBJS = crt0.o main.o Plugin.o
INCDIR = ./include
CFLAGS = -O2 -G0 -Wall -fshort-wchar -fno-pic -mno-check-zero-division
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS) -c
LIBDIR = ./lib
LDFLAGS = -mno-crt0 -nostdlib -nodefaultlibs
LIBS = -lvlfgui -lvlfgu -lvlfutils -lvlflibc
BUILD_PRX = 1
EXTRA_TARGETS = EBOOT.PBP
PSP_EBOOT_TITLE = Vlf Sample
PSPSDK=$(shell psp-config --pspsdk-path)
include ./build.mak
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here crt0.c (main module)
| Code: |
#include <pspsdk.h>
#include <pspkernel.h>
#include <kubridge.h>
#include <stdio.h>
#include <vlf.h>
extern int app_main(int argc, char *argv[]);
int start_thread(SceSize args, void *argp)
{
SceUID mod;
char *path = (char*) argp;
int last_trail = -1;
int i;
if(path)
{
for(i=0; path[i]; i++)
{
if(path[i] == '/')
last_trail = i;
}
}
if (last_trail >= 0)
path[last_trail] = 0;
sceIoChdir(path);
path[last_trail] = '/';
mod = sceKernelLoadModule("iop.prx", 0, NULL);
mod = sceKernelStartModule(mod, args, argp, NULL, NULL);
mod = sceKernelLoadModule("intraFont.prx", 0, NULL);
mod = sceKernelStartModule(mod, args, argp, NULL, NULL);
mod = sceKernelLoadModule("vlf.prx", 0, NULL);
mod = sceKernelStartModule(mod, args, argp, NULL, NULL);
mod = sceKernelLoadModule("Plugin.prx", 0, NULL);
mod = sceKernelStartModule(mod, args, argp, NULL, NULL);
vlfGuiInit(-1, app_main);
return sceKernelExitDeleteThread(0);
}
int module_start(SceSize args, void *argp)
{
SceUID thid = sceKernelCreateThread("start_thread", start_thread, 0x10, 0x4000, 0, NULL);
if (thid < 0)
return thid;
sceKernelStartThread(thid, args, argp);
return 0;
}
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now the submodules,
in this case a module called Plugin.prx that SHOULD display a text on the screen but it doesn't work (lol)
main.c
| Code: |
#include <pspsdk.h>
#include <pspkernel.h>
#include <vlf.h>
PSP_MODULE_INFO("Plugin", 0x1006, 1, 1);
PSP_MAIN_THREAD_ATTR(0);
u32 k1;
int addText(){
k1 = pspSdkSetK1(0);
vlfGuiAddText(200, 10, "Please display this!");
pspSdkSetK1(k1);
return 0;
}
int module_start(SceSize args, void *argp)
{
return 0;
}
int module_stop()
{
return 0;
}
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the makefile
| Code: |
TARGET = Plugin
OBJS = main.o
INCDIR =
CFLAGS = -O2 -G0 -Wall
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)
BUILD_PRX = 1
PRX_EXPORTS = exports.exp
USE_KERNEL_LIBC=1
USE_KERNEL_LIBS=1
LIBDIR =
LDFLAGS = -mno-crt0 -nostartfiles
LIBS = -lvlfgui -lvlfgu -lvlfutils -lvlflibc
PSPSDK=$(shell psp-config --pspsdk-path)
include $(PSPSDK)/lib/build.mak
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the exports
| Code: |
# Define the exports for the prx
PSP_BEGIN_EXPORTS
# These four lines are mandatory (although you can add other functions like module_stop)
# syslib is a psynonym for the single mandatory export.
PSP_EXPORT_START(syslib, 0, 0x8000)
PSP_EXPORT_FUNC_HASH(module_start)
PSP_EXPORT_VAR_HASH(module_info)
PSP_EXPORT_END
# Export our function
PSP_EXPORT_START(Plugin, 0, 0x4001)
PSP_EXPORT_FUNC(addText)
PSP_EXPORT_END
PSP_END_EXPORTS
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please try to help me solve this problem.
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moonlight
Joined: 26 Oct 2005
Posts: 567
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| Posted: Mon Aug 25, 2008 2:01 am Post subject: |
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| You are calling an user function (vlfGuiAddText), from a kernel module. And that doesn't work, the kernel won't ever resolve the library. |
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phobox
Joined: 24 Mar 2008
Posts: 140
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| Posted: Mon Aug 25, 2008 3:38 am Post subject: |
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| moonlight wrote: | | You are calling an user function (vlfGuiAddText), from a kernel module. And that doesn't work, the kernel won't ever resolve the library. |
so if i convert the kernel module to an user one it will work? i'll try it now
thanks.
EDIT: still don't work.
I changed:
PSP_MODULE_INFO("Plugin", 0, 1, 1);
removed k1 stuff
removed
USE_KERNEL_LIBC=1
USE_KERNEL_LIBS=1
PSP_EXPORT_START(Plugin, 0, 0)
what else should i do?
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phobox
Joined: 24 Mar 2008
Posts: 140
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| Posted: Mon Aug 25, 2008 6:32 am Post subject: |
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sorry for double post.
don't know why i changed PSP_EXPORT_START(Plugin, 0, 0) ...
it should be PSP_EXPORT_START(Plugin, 0, 0x0001) cause a user module is loading an user module.
now i'll try
edit: it is working! i think i was drunk when i changed the params of PSP_EXPORT_START...
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moonlight
Joined: 26 Oct 2005
Posts: 567
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| Posted: Mon Aug 25, 2008 7:31 am Post subject: |
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0x0001 -> export to modules with same privileges (resolved with jumps)
0x4001 -> export from kernel to user (resolved with syscalls) |
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phobox
Joined: 24 Mar 2008
Posts: 140
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| Posted: Mon Aug 25, 2008 7:36 am Post subject: |
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| moonlight wrote: | 0x0001 -> export to modules with same privileges (resolved with jumps)
0x4001 -> export from kernel to user (resolved with syscalls) |
yeah yeah i know.. i read it from the module tuto from this site. thanks anyway...
now a bug for you...
look at the shadow of the battery...
the title bar is called by the plugin module...
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moonlight
Joined: 26 Oct 2005
Posts: 567
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| Posted: Mon Aug 25, 2008 8:02 am Post subject: |
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| What is the code? Have you tried to add the battery icon yourself without using vlfGuiAddBatteryIcon? |
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phobox
Joined: 24 Mar 2008
Posts: 140
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moonlight
Joined: 26 Oct 2005
Posts: 567
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| Posted: Mon Aug 25, 2008 6:19 pm Post subject: |
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The problem is this: vlfGuiSetTitleBar(u, 0, 1, 0);
when it should be vlfGuiSetTitleBar(u, -1, 1, 0);
0 is a valid handler for a picture, and was assigned to the battery shadow internally when calling vlfGuiAddBatteryIconSystem. |
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phobox
Joined: 24 Mar 2008
Posts: 140
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| Posted: Mon Aug 25, 2008 6:28 pm Post subject: |
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thanks
now i have another problem, it seems that module_start function is not called when the module is started. in that function i load texts and pictures but they result not loaded.
is the problem when loading/starting module?
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