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, 58 insertions, 0 deletions

diff --git a/scripts/update-mips-syscall-args.sh b/scripts/update-mips-syscall-args.sh
new file mode 100755
index 000000000..5a529b699
--- /dev/null
+++ b/scripts/update-mips-syscall-args.sh
@@ -0,0 +1,58 @@
+#!/bin/sh
+
+URL=https://raw.githubusercontent.com/strace/strace/master/src
+FILES="sysent.h sysent_shorthand_defs.h linux/mips/syscallent-compat.h \
+       linux/mips/syscallent-o32.h linux/32/syscallent-common-32.h \
+       linux/generic/syscallent-common.h"
+
+output="$1"
+if [ "$output" = "" ] ; then
+    output="$PWD"
+fi
+
+INC=linux-user/mips/syscall-args-o32.c.inc
+
+TMP=$(mktemp -d)
+cd $TMP
+
+for file in $FILES; do
+    curl --create-dirs $URL/$file -o $TMP/$file
+done
+
+> linux/generic/subcallent.h
+> linux/32/subcallent.h
+
+cat > gen_mips_o32.c <<EOF
+#include <stdio.h>
+
+#define LINUX_MIPSO32
+#define MAX_ARGS 7
+
+#include "sysent.h"
+#include "sysent_shorthand_defs.h"
+
+#define SEN(syscall_name) 0,0
+const struct_sysent sysent0[] = {
+#include  "syscallent-o32.h"
+};
+
+int main(void)
+{
+    int i;
+
+    for (i = 4000; i < sizeof(sysent0) / sizeof(struct_sysent); i++) {
+        if (sysent0[i].sys_name == NULL) {
+            printf("    [% 4d] = MIPS_SYSCALL_NUMBER_UNUSED,\n", i - 4000);
+        } else {
+            printf("    [% 4d] = %d, /* %s */\n", i - 4000,
+                   sysent0[i].nargs, sysent0[i].sys_name);
+        }
+    }
+
+    return 0;
+}
+EOF
+
+cc -o gen_mips_o32 -I linux/mips -I linux/generic gen_mips_o32.c && ./gen_mips_o32 > "$output/$INC"
+
+rm -fr "$TMP"