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

1 files changed, 27 insertions, 0 deletions

diff --git a/linux-user/m68k/target_signal.h b/linux-user/m68k/target_signal.h
new file mode 100644
index 000000000..94157bf1f
--- /dev/null
+++ b/linux-user/m68k/target_signal.h
@@ -0,0 +1,27 @@
+#ifndef M68K_TARGET_SIGNAL_H
+#define M68K_TARGET_SIGNAL_H
+
+/* this struct defines a stack used during syscall handling */
+
+typedef struct target_sigaltstack {
+    abi_ulong ss_sp;
+    abi_int ss_flags;
+    abi_ulong ss_size;
+} target_stack_t;
+
+
+/*
+ * sigaltstack controls
+ */
+#define TARGET_SS_ONSTACK	1
+#define TARGET_SS_DISABLE	2
+
+#define TARGET_MINSIGSTKSZ	2048
+#define TARGET_SIGSTKSZ	8192
+
+#include "../generic/signal.h"
+
+#define TARGET_ARCH_HAS_SETUP_FRAME
+#define TARGET_ARCH_HAS_SIGTRAMP_PAGE 1
+
+#endif /* M68K_TARGET_SIGNAL_H */