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      1 /*
      2  * Check decoding of s390_runtime_instr syscall.
      3  *
      4  * Copyright (c) 2018 The strace developers.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #include "tests.h"
     31 #include <asm/unistd.h>
     32 
     33 #if defined __NR_s390_runtime_instr
     34 
     35 # include <errno.h>
     36 # include <signal.h>
     37 # include <stdio.h>
     38 # include <unistd.h>
     39 
     40 int
     41 main(void)
     42 {
     43 	static struct {
     44 		kernel_ulong_t cmd;
     45 		const char * cmd_str;
     46 	} cmd_args[] = {
     47 		{ 0, "???" },
     48 		{ 4, "???" },
     49 		{ (kernel_ulong_t) 0xdeafbeefdeadc0deULL, "???" },
     50 		{ 2, "STOP",  },
     51 	};
     52 
     53 	static struct {
     54 		kernel_ulong_t sig;
     55 		const char * sig_str;
     56 	} start_sig_args[] = {
     57 		{ 0, "SIG_0" },
     58 		{ (kernel_ulong_t) 0xfacefeedac0ffeedULL, NULL },
     59 		{ ARG_STR(SIGALRM) },
     60 		{ 33, "SIGRT_1" },
     61 		{ 63, "SIGRT_31" },
     62 	};
     63 
     64 	unsigned int i;
     65 	long rc;
     66 
     67 	for (i = 0; i < ARRAY_SIZE(cmd_args); i++) {
     68 		rc = syscall(__NR_s390_runtime_instr, cmd_args[i].cmd, 0xdead);
     69 		printf("s390_runtime_instr(%d /* S390_RUNTIME_INSTR_%s */) = "
     70 		       "%s\n",
     71 		       (int) cmd_args[i].cmd, cmd_args[i].cmd_str,
     72 		       sprintrc(rc));
     73 	}
     74 
     75 	for (i = 0; i < ARRAY_SIZE(start_sig_args); i++) {
     76 		long saved_errno;
     77 
     78 		rc = syscall(__NR_s390_runtime_instr, 1, start_sig_args[i].sig);
     79 		saved_errno = errno;
     80 		printf("s390_runtime_instr(1 /* S390_RUNTIME_INSTR_START */, ");
     81 
     82 		if (start_sig_args[i].sig_str)
     83 			printf("%s", start_sig_args[i].sig_str);
     84 		else
     85 			printf("%d", (int) start_sig_args[i].sig);
     86 
     87 		errno = saved_errno;
     88 		printf(") = %s\n", sprintrc(rc));
     89 	}
     90 
     91 	puts("+++ exited with 0 +++");
     92 	return 0;
     93 }
     94 
     95 #else
     96 
     97 SKIP_MAIN_UNDEFINED("__NR_s390_runtime_instr")
     98 
     99 #endif
    100