23 lines
555 B
C
23 lines
555 B
C
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/* Invokes a system call with the system call number and its
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argument on separate pages. This 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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/* Put a syscall number at the end of one page
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and its argument at the beginning of another. */
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int *p = get_boundary_area ();
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p--;
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p[0] = SYS_EXIT;
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p[1] = 42;
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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(42)");
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}
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