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- /* -*-comment-start: "//";comment-end:""-*-
- * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
- *
- * This file is part of GNU Mes.
- *
- * GNU Mes is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or (at
- * your option) any later version.
- *
- * GNU Mes is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
- */
- #include <linux/x86/syscall.h>
- static int
- __sys_call_internal (int sys_call)
- {
- asm ("!8 ldr____%r7,(%fp,+#$i8)");
- asm ("swi____$0");
- }
- static int
- __sys_call2_internal (int sys_call, int one, int two)
- {
- asm ("!8 ldr____%r7,(%fp,+#$i8)");
- asm ("!12 ldr____%r0,(%fp,+#$i8)");
- asm ("!16 ldr____%r1,(%fp,+#$i8)");
- asm ("swi____$0");
- }
- /* Returns < 0 on error (errno-like value from kernel), or 0 on success */
- int
- __raise (int signum)
- {
- int pid = __sys_call_internal (SYS_getpid);
- if (pid < 0)
- return pid;
- else
- return __sys_call2_internal (SYS_kill, pid, signum);
- }
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