aboutsummaryrefslogtreecommitdiff
path: root/sys/compat/cloudabi/cloudabi_util.h
diff options
context:
space:
mode:
authorEd Schouten <ed@FreeBSD.org>2015-07-16 18:24:06 +0000
committerEd Schouten <ed@FreeBSD.org>2015-07-16 18:24:06 +0000
commit6e5fcd99df18c88f6126e460fcacf2b2f5b2ce31 (patch)
treefada665f13fac54fc9486651419164b04c219564 /sys/compat/cloudabi/cloudabi_util.h
parentf3de0df49a88a0d49b0638aeed5d15bd8e34343c (diff)
downloadsrc-6e5fcd99df18c88f6126e460fcacf2b2f5b2ce31.tar.gz
src-6e5fcd99df18c88f6126e460fcacf2b2f5b2ce31.zip
Add a sysentvec for CloudABI on x86-64.
Summary: For CloudABI we need to put two things on the stack of new processes: the argument data (a binary blob; not strings) and a startup data structure. The startup data structure contains interesting things such as a pointer to the ELF program header, the thread ID of the initial thread, a stack smashing protection canary, and a pointer to the argument data. Fetching system call arguments and setting the return value is similar to FreeBSD. The only differences are that system call 0 does not exist and that we call into cloudabi_convert_errno() to convert the error code. We also need this function in a couple of other places, so we'd better reuse it here. Reviewers: dchagin, kib Reviewed By: kib Subscribers: imp Differential Revision: https://reviews.freebsd.org/D3098
Notes
Notes: svn path=/head/; revision=285641
Diffstat (limited to 'sys/compat/cloudabi/cloudabi_util.h')
-rw-r--r--sys/compat/cloudabi/cloudabi_util.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/sys/compat/cloudabi/cloudabi_util.h b/sys/compat/cloudabi/cloudabi_util.h
new file mode 100644
index 000000000000..4389e3de4592
--- /dev/null
+++ b/sys/compat/cloudabi/cloudabi_util.h
@@ -0,0 +1,36 @@
+/*-
+ * Copyright (c) 2015 Nuxi, https://nuxi.nl/
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _CLOUDABI_UTIL_H_
+#define _CLOUDABI_UTIL_H_
+
+#include <compat/cloudabi/cloudabi_syscalldefs.h>
+
+/* Converts a FreeBSD errno to a CloudABI errno. */
+cloudabi_errno_t cloudabi_convert_errno(int);
+
+#endif