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/*
* Copyright (c) 2011 Aeroflex Gaisler
*
* BSD license:
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <asm-leon/leonstack.h>
#include <asm-leon/irq.h>
#define NULL 0
/* single vector trapping version of trap handler installs */
struct svt_trap_entry
{
int start, end, func;
};
extern struct svt_trap_entry trap_table[28];
extern struct svt_trap_entry svt_trap_table_ext[17];
extern struct svt_trap_entry svt_trap_table_ext_end;
static struct svt_trap_entry *
gettrap_pos (int nr)
{
struct svt_trap_entry *p = trap_table;
while ((p->start) || (p->end) || (p->func))
{
if (p->start <= nr && p->end >= nr)
{
break;
}
p++;
}
return p;
}
int
svtloleveltrapinstall (int trap, void (*handler) ())
{
struct svt_trap_entry *p = gettrap_pos (trap);
if (p >= &svt_trap_table_ext_end)
{
return 0;
}
p->start = trap;
p->end = trap;
p->func = handler;
return 1;
}
int
svtlolevelirqinstall (int irqnr, void (*handler) ())
{
if (irqnr == 0 || irqnr >= 15)
{
return 0;
}
return svtloleveltrapinstall (irqnr + 0x10, handler);
}
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