From e02cda008591317b1625707ff8e115a4841aa889 Mon Sep 17 00:00:00 2001
From: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 11:40:56 +0000
Subject: Introduce Virtio-loopback epsilon release:
Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.
Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9
---
bsd-user/openbsd/target_os_stack.h | 56 ++++++++++++++++++++++++++++++++++++++
1 file changed, 56 insertions(+)
create mode 100644 bsd-user/openbsd/target_os_stack.h
(limited to 'bsd-user/openbsd/target_os_stack.h')
diff --git a/bsd-user/openbsd/target_os_stack.h b/bsd-user/openbsd/target_os_stack.h
new file mode 100644
index 000000000..4b37955d3
--- /dev/null
+++ b/bsd-user/openbsd/target_os_stack.h
@@ -0,0 +1,56 @@
+/*
+ * OpenBSD setup_initial_stack() implementation.
+ *
+ * Copyright (c) 2013-14 Stacey D. Son
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _TARGET_OS_STACK_H_
+#define _TARGET_OS_STACK_H_
+
+#include "target_arch_sigtramp.h"
+
+static inline int setup_initial_stack(struct bsd_binprm *bprm, abi_ulong *p,
+ abi_ulong *stringp)
+{
+ int i;
+ abi_ulong stack_base;
+
+ stack_base = (target_stkbas + target_stksiz) -
+ MAX_ARG_PAGES * TARGET_PAGE_SIZE;
+ if (p) {
+ *p = stack_base;
+ }
+ if (stringp) {
+ *stringp = stack_base;
+ }
+
+ for (i = 0; i < MAX_ARG_PAGES; i++) {
+ if (bprm->page[i]) {
+ info->rss++;
+ if (!memcpy_to_target(stack_base, bprm->page[i],
+ TARGET_PAGE_SIZE)) {
+ errno = EFAULT;
+ return -1;
+ }
+ g_free(bprm->page[i]);
+ }
+ stack_base += TARGET_PAGE_SIZE;
+ }
+
+ return 0;
+}
+
+#endif /* !_TARGET_OS_STACK_H_ */
--
cgit