risc-v: initial 64 bit port, static only (no TLS/NPTL)

Only a simple hello world is tested in qemu system emulation.

1 files changed, 23 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/riscv64/jmpbuf-offsets.h b/libc/sysdeps/linux/riscv64/jmpbuf-offsets.h
new file mode 100644
index 000000000..fff4d0d9c
--- /dev/null
+++ b/libc/sysdeps/linux/riscv64/jmpbuf-offsets.h
@@ -0,0 +1,23 @@
+/* Private macros for accessing __jmp_buf contents.  RISC-V version.
+   Copyright (C) 2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library 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.
+
+   The GNU C Library 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 the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <jmpbuf-unwind.h>
+
+/* Helper for generic ____longjmp_chk().  */
+#define JB_FRAME_ADDRESS(buf) \
+  ((void *) _jmpbuf_sp (buf))