artiq/soc/runtime/exceptions.c

#include "exceptions.h"
#include "comm.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;

void *exception_push(void)
{
    if(ec_top >= MAX_EXCEPTION_CONTEXTS)
        exception_raise(EID_OUT_OF_MEMORY);
    return exception_contexts[ec_top++].jb;
}

void exception_pop(int levels)
{
    ec_top -= levels;
}

int exception_getid(void)
{
    return stored_id;
}

void exception_raise(int id)
{
    if(ec_top > 0) {
        stored_id = id;
        exception_longjmp(exception_contexts[--ec_top].jb);
    } else {
        comm_log("ERROR: uncaught exception, ID=%d\n", id);
        while(1);
    }
}
soc/runtime: add exception management functions 2014-09-21 23:32:14 +08:00			`#include "exceptions.h"`
reorganize for devices/controllers 2014-10-19 23:51:49 +08:00			`#include "comm.h"`
soc/runtime: add exception management functions 2014-09-21 23:32:14 +08:00
soc/runtime: fix use of setjmp 2014-09-22 13:18:48 +08:00			`#define MAX_EXCEPTION_CONTEXTS 64`

			`struct exception_context {`
runtime: do not use buggy llvm.eh.sjlj.* intrinsics 2014-09-23 22:09:08 +08:00			`void *jb[13];`
soc/runtime: fix use of setjmp 2014-09-22 13:18:48 +08:00			`};`

			`static struct exception_context exception_contexts[MAX_EXCEPTION_CONTEXTS];`
			`static int ec_top;`
soc/runtime: add exception management functions 2014-09-21 23:32:14 +08:00			`static int stored_id;`

soc/runtime: fix use of setjmp 2014-09-22 13:18:48 +08:00			`void *exception_push(void)`
soc/runtime: add exception management functions 2014-09-21 23:32:14 +08:00			`{`
soc/runtime: fix use of setjmp 2014-09-22 13:18:48 +08:00			`if(ec_top >= MAX_EXCEPTION_CONTEXTS)`
soc/runtime: raise exception on RTIO underflow 2014-09-25 12:55:50 +08:00			`exception_raise(EID_OUT_OF_MEMORY);`
soc/runtime: fix use of setjmp 2014-09-22 13:18:48 +08:00			`return exception_contexts[ec_top++].jb;`
soc/runtime: add exception management functions 2014-09-21 23:32:14 +08:00			`}`

soc/runtime: add levels to exception_pop 2014-09-23 16:22:32 +08:00			`void exception_pop(int levels)`
soc/runtime: add exception management functions 2014-09-21 23:32:14 +08:00			`{`
soc/runtime: add levels to exception_pop 2014-09-23 16:22:32 +08:00			`ec_top -= levels;`
soc/runtime: add exception management functions 2014-09-21 23:32:14 +08:00			`}`

soc/runtime: fix use of setjmp 2014-09-22 13:18:48 +08:00			`int exception_getid(void)`
soc/runtime: add exception management functions 2014-09-21 23:32:14 +08:00			`{`
soc/runtime: fix use of setjmp 2014-09-22 13:18:48 +08:00			`return stored_id;`
			`}`
soc/runtime: add exception management functions 2014-09-21 23:32:14 +08:00
soc/runtime: fix use of setjmp 2014-09-22 13:18:48 +08:00			`void exception_raise(int id)`
			`{`
soc/runtime/exceptions: do not crash when exception is raised with no handler 2014-10-05 10:33:27 +08:00			`if(ec_top > 0) {`
			`stored_id = id;`
			`exception_longjmp(exception_contexts[--ec_top].jb);`
runtime/exception_raise: never return 2014-10-15 16:11:28 +08:00			`} else {`
reorganize for devices/controllers 2014-10-19 23:51:49 +08:00			`comm_log("ERROR: uncaught exception, ID=%d\n", id);`
runtime/exception_raise: never return 2014-10-15 16:11:28 +08:00			`while(1);`
			`}`
soc/runtime: add exception management functions 2014-09-21 23:32:14 +08:00			`}`