newlib/libgloss/xc16x/trap_handle.c

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/*
* Copyright (C) 2006 KPIT Cummins
* Copyright (C) 2009 Conny Marco Menebröcker
* All rights reserved.
*
* Redistribution and use in source and binary forms is permitted
* provided that the above copyright notice and following paragraph are
* duplicated in all such forms.
*
* This file is distributed WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
int trap0(int file, unsigned long ptr,int len)
{
asm volatile("TRAP #3");
return len;
}
int trap1(int file, unsigned long ptr,int len)
{
asm volatile("TRAP #4");
}
int trap_lseek(int file, unsigned long ptr,int len)
{
asm volatile("TRAP #8");
}
volatile int opensys(char *name,int flags,int perms)
{
#ifndef __xc16xL__
asm volatile("push r11\n"
"mov r11,r10 \n"
" mov r10,r9 \n"
" mov r9,#0x300 \n"
);
#endif
asm volatile("trap #5");
#ifndef __xc16xL__
asm volatile("pop r11");
#endif
}
volatile int creatsys(char *name,int perms)
{
#ifndef __xc16xL__
asm volatile("push r10\n"
" mov r10,r9 \n"
" mov r9,#0x300 \n"
);
#endif
asm volatile("trap #7");
#ifndef __xc16xL__
asm volatile("pop r10");
#endif
}