From 4ebc6a74108f6c0448249b398ef33b25f3b16c0c Mon Sep 17 00:00:00 2001 From: Mans Rullgard Date: Mon, 15 Oct 2012 02:38:17 +0100 Subject: build: Plan 9 support This adds support for building on Plan 9 x86-32. The compat/plan9 directory contains these items: - replacements for the 'head' and 'printf' shell commands - wrapper for main() to disable FPU exceptions Larger required changes to the system are described in the documentation. Signed-off-by: Mans Rullgard --- compat/plan9/main.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 compat/plan9/main.c (limited to 'compat/plan9/main.c') diff --git a/compat/plan9/main.c b/compat/plan9/main.c new file mode 100644 index 0000000000..97d70678a6 --- /dev/null +++ b/compat/plan9/main.c @@ -0,0 +1,34 @@ +/* + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +int plan9_main(int argc, char **argv); + +#undef main +int main(int argc, char **argv) +{ + /* The setfcr() function in lib9 is broken, must use asm. */ +#ifdef __i386 + short fcr; + __asm__ volatile ("fstcw %0 \n" + "or $63, %0 \n" + "fldcw %0 \n" + : "=m"(fcr)); +#endif + + return plan9_main(argc, argv); +} -- cgit v1.2.3