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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [libgloss/] [m68k/] [io-system.c] - Rev 179
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/* * io-system.c -- * * Copyright (c) 2006 CodeSourcery Inc * * The authors hereby grant permission to use, copy, modify, distribute, * and license this software and its documentation for any purpose, provided * that existing copyright notices are retained in all copies and that this * notice is included verbatim in any distributions. No written agreement, * license, or royalty fee is required for any of the authorized uses. * Modifications to this software may be copyrighted by their authors * and need not follow the licensing terms described here, provided that * the new terms are clearly indicated on the first page of each file where * they apply. */ #include <stdlib.h> #include <string.h> #include <errno.h> #include <sys/wait.h> #define IO _system #include "io.h" /* * system: execute command on (remote) host * input parameters: * 0 : command ptr * 1 : command length * output parameters: * 0 : result * 1 : errno */ int _system (const char *command) { #if HOSTED int e; gdb_parambuf_t parameters; parameters[0] = (uint32_t) command; parameters[1] = command ? (uint32_t) strlen (command) + 1 : 0; __hosted (HOSTED_SYSTEM, parameters); errno = __hosted_from_gdb_errno (parameters[1]); e = parameters[0]; if (e >= 0 && command) { /* We have to convert e, an exit status to the encoded status of the command. To avoid hard coding the exit status, we simply loop until we find the right position. */ int exit_code; for (exit_code = e; e && WEXITSTATUS (e) != exit_code; e <<= 1) continue; } return e; #else if (!command) return 0; errno = ENOSYS; return -1; #endif }
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