src/tests/filst/sc-bad-nr-1.c


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#include <syscall-nr.h>
#include "tests/lib.h"
#include "tests/main.h"

// From "lib/user/syscall.c", but modified to push some zeros on the stack
// first, to get a better output for the tests if the stack error message
// remains.
#define syscall0(NUMBER)                                                \
    ({                                                                  \
        int retval;                                                     \
        asm volatile                                                    \
            ("pushl $0; pushl $0; pushl %[number]; int $0x30; addl $4, %%esp" \
                : "=a" (retval)                                         \
                : [number] "i" (NUMBER)                                 \
                : "memory");                                            \
        retval;                                                         \
    })

void test_main(void)
{
    // Call a syscall that is one larger than the largest syscall number.
    syscall0(SYS_NUMBER_OF_CALLS);
    fail("Should have failed.");
}