22 lines
577 B
C
Executable file
22 lines
577 B
C
Executable file
/* Invokes a system call with one byte of the system call's
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argument on a separate page from the rest of the bytes. This
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must work. */
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#include <syscall-nr.h>
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#include "tests/userprog/boundary.h"
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#include "tests/lib.h"
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#include "tests/main.h"
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void
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test_main (void)
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{
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/* Make one byte of a syscall argument hang over into a second
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page. */
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int *p = (int *) ((char *) get_boundary_area () - 7);
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p[0] = SYS_EXIT;
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p[1] = 67;
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/* Invoke the system call. */
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asm volatile ("movl %0, %%esp; int $0x30" : : "g" (p));
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fail ("should have called exit(67)");
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}
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