From 2cee0669299cd2b980aa9ae253c24107a4813b26 Mon Sep 17 00:00:00 2001
From: Bin Lu <bin.lu@arm.com>
Date: Thu, 26 Sep 2019 06:09:32 +0000
Subject: enable ring0 to support arm64

This patch enabled the basic framework for arm64 guest.

Serveral jobs were finished in this patch:
1, ring0.Vectors()
2, switchToUser()
3, basic framwork for Arm64 guest.

Signed-off-by: Bin Lu <bin.lu@arm.com>
---
 pkg/sentry/platform/ring0/BUILD | 33 ++++++++++++++++++++-------------
 1 file changed, 20 insertions(+), 13 deletions(-)

(limited to 'pkg/sentry/platform/ring0/BUILD')

diff --git a/pkg/sentry/platform/ring0/BUILD b/pkg/sentry/platform/ring0/BUILD
index 8ed6c7652..939a0033a 100644
--- a/pkg/sentry/platform/ring0/BUILD
+++ b/pkg/sentry/platform/ring0/BUILD
@@ -1,17 +1,16 @@
 load("//tools/go_stateify:defs.bzl", "go_library")
+load("//tools/go_generics:defs.bzl", "go_template", "go_template_instance")
 
 package(licenses = ["notice"])
 
-load("//tools/go_generics:defs.bzl", "go_template", "go_template_instance")
-
 go_template(
     name = "defs",
-    srcs = [
-        "defs.go",
-        "defs_amd64.go",
-        "offsets_amd64.go",
-        "x86.go",
-    ],
+    srcs = select(
+    {
+        "@bazel_tools//src/conditions:linux_aarch64": ["defs.go", "defs_arm64.go", "offsets_arm64.go", "aarch64.go",],
+        "//conditions:default": ["defs.go", "defs_amd64.go", "offsets_amd64.go", "x86.go",],
+    },
+    ),
     visibility = [":__subpackages__"],
 )
 
@@ -23,10 +22,15 @@ go_template_instance(
 )
 
 genrule(
-    name = "entry_impl_amd64",
-    srcs = ["entry_amd64.s"],
-    outs = ["entry_impl_amd64.s"],
-    cmd = "(echo -e '// build +amd64\\n' && $(location //pkg/sentry/platform/ring0/gen_offsets) && cat $(SRCS)) > $@",
+    name = "entry_impl",
+    srcs = ["entry_amd64.s", "entry_arm64.s"],
+    outs = ["entry_impl.s"],
+    cmd = select(
+    {
+        "@bazel_tools//src/conditions:linux_aarch64": "(echo -e '// build +arm64\\n' && $(location //pkg/sentry/platform/ring0/gen_offsets) && cat $(location entry_arm64.s)) > $@",
+        "//conditions:default": "(echo -e '// build +amd64\\n' && $(location //pkg/sentry/platform/ring0/gen_offsets) && cat $(location entry_amd64.s)) > $@",
+    },
+    ),
     tools = ["//pkg/sentry/platform/ring0/gen_offsets"],
 )
 
@@ -35,12 +39,15 @@ go_library(
     srcs = [
         "defs_impl.go",
         "entry_amd64.go",
-        "entry_impl_amd64.s",
+        "entry_arm64.go",
+        "entry_impl.s",
         "kernel.go",
         "kernel_amd64.go",
+        "kernel_arm64.go",
         "kernel_unsafe.go",
         "lib_amd64.go",
         "lib_amd64.s",
+        "lib_arm64.go",
         "ring0.go",
     ],
     importpath = "gvisor.dev/gvisor/pkg/sentry/platform/ring0",
-- 
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