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From 15e710e331d36eb279852b5cd1ba37a9a6005217 Mon Sep 17 00:00:00 2001
From: Koen Kooi <koen.kooi@linaro.org>
Date: Mon, 2 Mar 2015 19:08:22 +0800
Subject: [PATCH 3/5] Add AArch64 support
---
Upstream-status: Pending
js/src/assembler/jit/ExecutableAllocator.h | 6 ++++++
js/src/assembler/wtf/Platform.h | 4 ++++
js/src/configure.in | 4 ++++
mfbt/double-conversion/utils.h | 1 +
4 files changed, 15 insertions(+)
diff --git a/js/src/assembler/jit/ExecutableAllocator.h b/js/src/assembler/jit/ExecutableAllocator.h
index c071c33..90764c3 100644
--- a/js/src/assembler/jit/ExecutableAllocator.h
+++ b/js/src/assembler/jit/ExecutableAllocator.h
@@ -382,6 +382,12 @@ public:
{
reprotectRegion(start, size, Executable);
}
+#elif WTF_CPU_AARCH64 && WTF_PLATFORM_LINUX
+ static void cacheFlush(void* code, size_t size)
+ {
+ intptr_t end = reinterpret_cast<intptr_t>(code) + size;
+ __builtin___clear_cache(reinterpret_cast<char*>(code), reinterpret_cast<char*>(end));
+ }
#else
static void makeWritable(void*, size_t) {}
static void makeExecutable(void*, size_t) {}
diff --git a/js/src/assembler/wtf/Platform.h b/js/src/assembler/wtf/Platform.h
index 0c84896..e8763a7 100644
--- a/js/src/assembler/wtf/Platform.h
+++ b/js/src/assembler/wtf/Platform.h
@@ -325,6 +325,10 @@
#define WTF_THUMB_ARCH_VERSION 0
#endif
+/* CPU(AArch64) - 64-bit ARM */
+#if defined(__aarch64__)
+#define WTF_CPU_AARCH64 1
+#endif
/* WTF_CPU_ARMV5_OR_LOWER - ARM instruction set v5 or earlier */
/* On ARMv5 and below the natural alignment is required.
diff --git a/js/src/configure.in b/js/src/configure.in
index 64c7606..0673aca 100644
--- a/js/src/configure.in
+++ b/js/src/configure.in
@@ -1121,6 +1121,10 @@ arm*)
CPU_ARCH=arm
;;
+aarch64)
+ CPU_ARCH=aarch64
+ ;;
+
mips|mipsel)
CPU_ARCH="mips"
;;
diff --git a/mfbt/double-conversion/utils.h b/mfbt/double-conversion/utils.h
index 0eec2d9..fe26dab 100644
--- a/mfbt/double-conversion/utils.h
+++ b/mfbt/double-conversion/utils.h
@@ -58,6 +58,7 @@
defined(__mips__) || defined(__powerpc__) || \
defined(__sparc__) || defined(__sparc) || defined(__s390__) || \
defined(__SH4__) || defined(__alpha__) || \
+ defined(__aarch64__) || \
defined(_MIPS_ARCH_MIPS32R2)
#define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1
#elif defined(_M_IX86) || defined(__i386__) || defined(__i386)
--
1.9.3
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