From 036d209a3f1a771de9aed31dfbe804aaf91d1c27 Mon Sep 17 00:00:00 2001
From: Shawn Anastasio <shawnanastasio@yahoo.com>
Date: Thu, 9 Aug 2018 23:35:21 -0500
Subject: [PATCH] sandbox/linux: Implement partial support for ppc64 syscalls
 and ucontext

Unlike other architectures, the ppc64 files currently rely on applicable
headers being provided by the system. It is sufficient for standard
GNU/Linux environments, but may require expansion elsewhere.
---
 sandbox/linux/BUILD.gn                              |  2 ++
 sandbox/linux/system_headers/linux_syscalls.h       |  4 ++++
 sandbox/linux/system_headers/linux_ucontext.h       |  2 ++
 sandbox/linux/system_headers/ppc64_linux_syscalls.h | 12 ++++++++++++
 sandbox/linux/system_headers/ppc64_linux_ucontext.h | 12 ++++++++++++
 5 files changed, 32 insertions(+)
 create mode 100644 sandbox/linux/system_headers/ppc64_linux_syscalls.h
 create mode 100644 sandbox/linux/system_headers/ppc64_linux_ucontext.h

Index: chromium-120.0.6099.71/sandbox/linux/BUILD.gn
===================================================================
--- chromium-120.0.6099.71.orig/sandbox/linux/BUILD.gn
+++ chromium-120.0.6099.71/sandbox/linux/BUILD.gn
@@ -383,6 +383,8 @@ component("sandbox_services") {
 
 source_set("sandbox_services_headers") {
   sources = [
+    "system_headers/ppc64_linux_syscalls.h",
+    "system_headers/ppc64_linux_ucontext.h",
     "system_headers/arm64_linux_syscalls.h",
     "system_headers/arm_linux_syscalls.h",
     "system_headers/arm_linux_ucontext.h",
Index: chromium-120.0.6099.71/sandbox/linux/system_headers/linux_syscalls.h
===================================================================
--- chromium-120.0.6099.71.orig/sandbox/linux/system_headers/linux_syscalls.h
+++ chromium-120.0.6099.71/sandbox/linux/system_headers/linux_syscalls.h
@@ -35,5 +35,9 @@
 #include "sandbox/linux/system_headers/arm64_linux_syscalls.h"
 #endif
 
+#if defined(__powerpc64__)
+#include "sandbox/linux/system_headers/ppc64_linux_syscalls.h"
+#endif
+
 #endif  // SANDBOX_LINUX_SYSTEM_HEADERS_LINUX_SYSCALLS_H_
 
Index: chromium-120.0.6099.71/sandbox/linux/system_headers/ppc64_linux_syscalls.h
===================================================================
--- /dev/null
+++ chromium-120.0.6099.71/sandbox/linux/system_headers/ppc64_linux_syscalls.h
@@ -0,0 +1,12 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SANDBOX_LINUX_SYSTEM_HEADERS_PPC64_LINUX_SYSCALLS_H_
+#define SANDBOX_LINUX_SYSTEM_HEADERS_PPC64_LINUX_SYSCALLS_H_
+
+#include <asm/unistd.h>
+
+//TODO: is it necessary to redefine syscall numbers for PPC64?
+
+#endif  // SANDBOX_LINUX_SYSTEM_HEADERS_PPC64_LINUX_SYSCALLS_H_
Index: chromium-120.0.6099.71/sandbox/linux/system_headers/ppc64_linux_ucontext.h
===================================================================
--- /dev/null
+++ chromium-120.0.6099.71/sandbox/linux/system_headers/ppc64_linux_ucontext.h
@@ -0,0 +1,12 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SANDBOX_LINUX_SYSTEM_HEADERS_PPC64_LINUX_UCONTEXT_H_
+#define SANDBOX_LINUX_SYSTEM_HEADERS_PPC64_LINUX_UCONTEXT_H_
+
+#include <sys/ucontext.h>
+
+//TODO: is it necessary to redefine ucontext on PPC64?
+
+#endif  // SANDBOX_LINUX_SYSTEM_HEADERS_PPC64_LINUX_UCONTEXT_H_