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[ADePSP]

I'm updating my prx so it can read from a text file but am having problems because in Kernel Mode it complains that malloc and free are undefined when compiling...

If I change the makefile to use PSPSDK_LIBC and PSPSDK_LIBS it compiles fine but that's no use for what i'm doing...

Does anyone know what the problem might be or if their are API alternatives I should be using...?

Here is the makefile i'm using that has the problem,

[weltall]

kernel doesn't use the psp sdk libc but the psp builtin kernel libc which doesn't use malloc and free.
the psp has only a bunch of own function to do malloch and freeing and they work a bit differently:

first of all you need to malloc part of the partition
int memid = sceKernelAllocPartitionMemory(1, "mybuffer", 0, howmuchtoalloch, NULL);
this will alloc the ram you need:
arg1: in the kernel partition (1 or 3(mirror)) if you want user use 2
arg2: buffer name not much interesting if you only need to alloch usefull to search for allocations in the uid lists
arg3: this can be 0 => alloc in the lowest adress 1 alloc in the highest adress 2 alloc in a user determined adress
arg4: num*byte of space to alloc
arg5: if arg3 = 2 adress to alloc to

but you aren't done you need the adress were your allocation starts :)
mypointer = sceKernelGetBlockHeadAddr(memid);

and you are done you can use it as a normal malloched adress.
then to free it:
sceKernelFreePartitionMemory(memid);

so you need to keep the memid data if you don't want to search for your allocation trought the uids lists

you are done :)

[ADePSP]

Thanks man... :D

[ADePSP]

Well, that all sounded quite straight forward but it crashed when I try to read into the pointer... See the bellow snipit of code... It crashes the PSP on the line highlighted in bold...

Little help...

-----> CODE SNIPPIT

int size = 0;
int fd;
int flen = 0;
char* Text;
char* Line;

// Returns number of bytes in file (I know this works)
size = getFileSize(filename);

// Allocate memory to hold file contents
int memid = sceKernelAllocPartitionMemory(1, "inibuffer", 0, size, NULL);
Text = sceKernelGetBlockHeadAddr(memid);

// Open file and read contents into pointer
fd = sceIoOpen(filename, PSP_O_RDONLY, 0777);
flen = sceIoRead(fd, Text, size);
sceIoClose(fd);

---> END CODE SNIPPIT

[weltall]

what is memid?
maybe you are out of memory and it doesn't alloc it (so you are reading in a NULL pointer)

[ADePSP]

[weltall]

well you must do it by yourself if you want a memset function. after all it's simple doing it you just need to make a for loop which copies the second argument over all memory