srcfile.c

/*
# _____     ___ ____     ___ ____
#  ____|   |    ____|   |        | |____|
# |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
#-----------------------------------------------------------------------
# Licenced under Academic Free License version 2.0
# Review ps2sdk README & LICENSE files for further details.
*/
 
#include "kernel.h"
#include "internal.h"
 
struct SyscallData
{
    int syscall;
    void *function;
};
 
#define NUM_ENTRIES 6
static struct SyscallData entries[NUM_ENTRIES] = {
    {0xfc, &SetAlarm},
    {0xfd, &SetAlarm},
    {0xfe, &ReleaseAlarm},
    {0xff, &ReleaseAlarm},
    {0x12c, &Intc12Handler}, // Overwrites INTC 12 handler without using SetINTCHandler
    {0x08, &ResumeIntrDispatch}};
 
void *_start(int syscall) __attribute__((section(".start")));
 
void *_start(int syscall)
{
    int i;
 
    for (i = 0; i < NUM_ENTRIES; i++) {
        if (syscall == entries[i].syscall)
            return entries[i].function;
    }
 
    return NULL;
}