1
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forked from M-Labs/artiq
artiq/soc/runtime/exceptions.c

59 lines
1.1 KiB
C

#include <generated/csr.h>
#include "log.h"
#include "exceptions.h"
#define MAX_EXCEPTION_CONTEXTS 64
struct exception_context {
void *jb[13];
};
static struct exception_context exception_contexts[MAX_EXCEPTION_CONTEXTS];
static int ec_top;
static int stored_id;
static long long int stored_params[3];
void *exception_push(void)
{
if(ec_top >= MAX_EXCEPTION_CONTEXTS)
exception_raise(EID_INTERNAL_ERROR);
return exception_contexts[ec_top++].jb;
}
void exception_pop(int levels)
{
ec_top -= levels;
}
int exception_getid(long long int *eparams)
{
int i;
if(eparams)
for(i=0;i<3;i++)
eparams[i] = stored_params[i];
return stored_id;
}
void exception_raise(int id)
{
exception_raise_params(id, 0, 0, 0);
}
void exception_raise_params(int id,
long long int p0, long long int p1,
long long int p2)
{
if(ec_top > 0) {
stored_id = id;
stored_params[0] = p0;
stored_params[1] = p1;
stored_params[2] = p2;
exception_longjmp(exception_contexts[--ec_top].jb);
} else {
log("ERROR: uncaught exception, ID=%d\n", id);
while(1);
}
}