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      1 /*
      2  * Check decoding of riscv_flush_icache 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 
     32 #include <asm/unistd.h>
     33 
     34 #include "scno.h"
     35 
     36 #ifdef __NR_riscv_flush_icache
     37 
     38 # include <stdint.h>
     39 # include <stdio.h>
     40 # include <unistd.h>
     41 
     42 int main(void)
     43 {
     44 	static struct {
     45 		kernel_ulong_t addr;
     46 		const char *str;
     47 	} addrs[] = {
     48 		{ (kernel_ulong_t) (uintptr_t) ARG_STR(NULL) },
     49 		{ (kernel_ulong_t) 0xbadc0deddeadf157ULL,
     50 			sizeof(kernel_ulong_t) == 8 ? "0xbadc0deddeadf157" :
     51 			"0xdeadf157" },
     52 	};
     53 	static struct {
     54 		kernel_ulong_t val;
     55 		const char *str;
     56 	} flags[] = {
     57 		{ ARG_STR(0) },
     58 		{ 1, "SYS_RISCV_FLUSH_ICACHE_LOCAL" },
     59 		{ (kernel_ulong_t) 0xfacefeedfffffffeULL,
     60 			sizeof(kernel_ulong_t) == 8 ?
     61 			"0xfacefeedfffffffe /* SYS_RISCV_FLUSH_ICACHE_??? */" :
     62 			"0xfffffffe /* SYS_RISCV_FLUSH_ICACHE_??? */" },
     63 		{ (kernel_ulong_t) 0xfacefeedffffffffULL,
     64 			sizeof(kernel_ulong_t) == 8 ?
     65 			"SYS_RISCV_FLUSH_ICACHE_LOCAL|0xfacefeedfffffffe" :
     66 			"SYS_RISCV_FLUSH_ICACHE_LOCAL|0xfffffffe" },
     67 	};
     68 
     69 	for (size_t i = 0; i < ARRAY_SIZE(addrs); i++) {
     70 		for (size_t j = 0; j < ARRAY_SIZE(addrs); j++) {
     71 			for (size_t k = 0; k < ARRAY_SIZE(flags); k++) {
     72 				long rc = syscall(__NR_riscv_flush_icache,
     73 						  addrs[i].addr,
     74 						  addrs[j].addr,
     75 						  flags[k].val);
     76 
     77 				printf("riscv_flush_icache(%s, %s, %s) = %s\n",
     78 				       addrs[i].str, addrs[j].str, flags[k].str,
     79 				       sprintrc(rc));
     80 			}
     81 		}
     82 	}
     83 
     84 	puts("+++ exited with 0 +++");
     85 
     86 	return 0;
     87 }
     88 
     89 #else
     90 
     91 SKIP_MAIN_UNDEFINED("__NR_riscv_flush_icache");
     92 
     93 #endif
     94