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/**
* @file swexn_basic_test.c
* @author bblum
* @brief Tests a simple use case for swexn
* @public yes
* @for p4
*/
#include <stddef.h>
#include <stdlib.h>
#include <syscall.h>
#include "410_tests.h"
DEF_TEST_NAME("swexn_basic_test:");
#define STAQ_SIZE (4096)
char exn_staq[STAQ_SIZE];
#define EXN_STAQ_TOP ((void *)((unsigned int)(&exn_staq[STAQ_SIZE-7]) & ~(sizeof (int) - 1)))
#define GOOD_MEMORY ((void *)0x40000000)
void handler(void *arg, ureg_t *uregs)
{
int ret;
REPORT_MISC("Hello from a handler");
if (uregs == NULL) {
REPORT_MISC("what use is a handler without a ureg pointer?");
REPORT_END_FAIL;
exit(-1);
}
ret = new_pages(GOOD_MEMORY, STAQ_SIZE);
if (ret < 0) {
REPORT_MISC("new_pages failed");
REPORT_END_FAIL;
exit(-1);
}
*(int *)GOOD_MEMORY = 42;
ret = swexn(EXN_STAQ_TOP, handler, NULL, uregs);
if (ret < 0) {
REPORT_MISC("second swexn rejected");
} else {
REPORT_MISC("restoring old position failed");
}
REPORT_END_FAIL;
exit(-1);
return;
}
int main()
{
int ret;
REPORT_START_CMPLT;
ret = swexn(EXN_STAQ_TOP, handler, NULL, NULL);
if (ret < 0) {
REPORT_MISC("swexn call rejected");
REPORT_END_FAIL;
exit(-1);
}
/* Invoke handler */
ret = *(int *)GOOD_MEMORY;
if (ret == 0) {
REPORT_MISC("handler not run?");
REPORT_END_FAIL;
exit(-1);
}
TEST_PROG_PROGRESS;
REPORT_END_SUCCESS;
exit(ret);
}
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