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Slightly tweaked version of a patch from:
http://gentoo-overlays.zugaina.org/loongson/portage/net-libs/xulrunner/files/xulrunner-chromium-mips.patch
diff --git a/ipc/chromium/src/base/atomicops.h b/ipc/chromium/src/base/atomicops.h
index 87df918..363bf63 100644
--- a/ipc/chromium/src/base/atomicops.h
+++ b/ipc/chromium/src/base/atomicops.h
@@ -132,6 +132,8 @@ Atomic64 Release_Load(volatile const Atomic64* ptr);
#include "base/atomicops_internals_x86_gcc.h"
#elif defined(COMPILER_GCC) && defined(ARCH_CPU_ARM_FAMILY)
#include "base/atomicops_internals_arm_gcc.h"
+#elif defined(COMPILER_GCC) && defined(ARCH_CPU_MIPS_FAMILY)
+#include "base/atomicops_internals_mips_gcc.h"
#else
#error "Atomic operations are not supported on your platform"
#endif
diff --git a/ipc/chromium/src/base/atomicops_internals_mips_gcc.h b/ipc/chromium/src/base/atomicops_internals_mips_gcc.h
new file mode 100644
index 0000000..d1b87ee
--- /dev/null
+++ b/ipc/chromium/src/base/atomicops_internals_mips_gcc.h
@@ -0,0 +1,160 @@
+// Copyright (c) 2010 Zhang, Le <r0bertz@gentoo.org>
+// Use of this source code is governed by GPLv2.
+
+// This file is an internal atomic implementation, use base/atomicops.h instead.
+
+#ifndef BASE_ATOMICOPS_INTERNALS_MIPS_GCC_H_
+#define BASE_ATOMICOPS_INTERNALS_MIPS_GCC_H_
+
+#define ATOMICOPS_COMPILER_BARRIER() __asm__ __volatile__("" : : : "memory")
+
+namespace base {
+namespace subtle {
+
+// 32-bit low-level operations on any platform.
+
+inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr,
+ Atomic32 old_value,
+ Atomic32 new_value) {
+ Atomic32 prev;
+ __asm__ __volatile__(
+ " .set push \n"
+ " .set noat \n"
+ " .set mips3 \n"
+ "1: ll %0, %2 \n"
+ " bne %0, %z3, 2f \n"
+ " .set mips0 \n"
+ " move $1, %z4 \n"
+ " .set mips3 \n"
+ " sc $1, %1 \n"
+ " beqz $1, 3f \n"
+ "2: \n"
+ " .subsection 2 \n"
+ "3: b 1b \n"
+ " .previous \n"
+ " .set pop \n"
+ : "=&r" (prev), "=R" (*ptr)
+ : "R" (*ptr), "Jr" (old_value), "Jr" (new_value)
+ : "memory");
+ return prev;
+}
+
+inline Atomic32 NoBarrier_AtomicExchange(volatile Atomic32* ptr,
+ Atomic32 new_value) {
+ unsigned int ret_value;
+ unsigned long dummy;
+
+ __asm__ __volatile__(" .set mips3 \n"
+ "1: ll %0, %3 # xchg_u32 \n"
+ " .set mips0 \n"
+ " move %2, %z4 \n"
+ " .set mips3 \n"
+ " sc %2, %1 \n"
+ " beqz %2, 2f \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
+ " .set mips0 \n"
+ : "=&r" (ret_value), "=m" (*ptr), "=&r" (dummy)
+ : "R" (*ptr), "Jr" (new_value)
+ : "memory");
+
+ return ret_value; // Now it's the previous value.
+}
+
+inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr,
+ Atomic32 increment) {
+ Atomic32 temp, result;
+ __asm__ __volatile__(
+ " .set mips3 \n"
+ "1: ll %1, %2 # atomic_add_return \n"
+ " addu %0, %1, %3 \n"
+ " sc %0, %2 \n"
+ " beqz %0, 2f \n"
+ " addu %0, %1, %3 \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
+ " .set mips0 \n"
+ : "=&r" (result), "=&r" (temp), "=m" (*ptr)
+ : "Ir" (increment), "m" (*ptr)
+ : "memory");
+ return result;
+}
+
+inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
+ Atomic32 increment) {
+ Atomic32 temp, result;
+ __asm__ __volatile__(
+ " .set mips3 \n"
+ "1: ll %1, %2 # atomic_add_return \n"
+ " addu %0, %1, %3 \n"
+ " sc %0, %2 \n"
+ " beqz %0, 2f \n"
+ " addu %0, %1, %3 \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
+ " .set mips0 \n"
+ : "=&r" (result), "=&r" (temp), "=m" (*ptr)
+ : "Ir" (increment), "m" (*ptr)
+ : "memory");
+ __asm__ __volatile__("sync" : : : "memory");
+ return result;
+}
+
+inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
+ Atomic32 old_value,
+ Atomic32 new_value) {
+ Atomic32 x = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
+ __asm__ __volatile__("sync" : : : "memory");
+ return x;
+}
+
+inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
+ Atomic32 old_value,
+ Atomic32 new_value) {
+ return NoBarrier_CompareAndSwap(ptr, old_value, new_value);
+}
+
+inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
+ *ptr = value;
+}
+
+inline void MemoryBarrier() {
+ __asm__ __volatile__("sync" : : : "memory");
+}
+
+inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
+ *ptr = value;
+ __asm__ __volatile__("sync" : : : "memory");
+}
+
+inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
+ ATOMICOPS_COMPILER_BARRIER();
+ *ptr = value; // An x86 store acts as a release barrier.
+ // See comments in Atomic64 version of Release_Store(), below.
+}
+
+inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) {
+ return *ptr;
+}
+
+inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
+ Atomic32 value = *ptr; // An x86 load acts as a acquire barrier.
+ // See comments in Atomic64 version of Release_Store(), below.
+ ATOMICOPS_COMPILER_BARRIER();
+ return value;
+}
+
+inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
+ MemoryBarrier();
+ return *ptr;
+}
+
+} // namespace base::subtle
+} // namespace base
+
+#undef ATOMICOPS_COMPILER_BARRIER
+
+#endif // BASE_ATOMICOPS_INTERNALS_MIPS_GCC_H_
diff --git a/ipc/chromium/src/base/debug_util_posix.cc b/ipc/chromium/src/base/debug_util_posix.cc
index f7c58b4..50fb41d 100644
--- a/ipc/chromium/src/base/debug_util_posix.cc
+++ b/ipc/chromium/src/base/debug_util_posix.cc
@@ -108,7 +108,7 @@ bool DebugUtil::BeingDebugged() {
// static
void DebugUtil::BreakDebugger() {
-#if !defined(ARCH_CPU_ARM_FAMILY)
+#if defined(ARCH_CPU_X86_FAMILY)
asm ("int3");
#endif
}
diff --git a/ipc/chromium/src/build/build_config.h b/ipc/chromium/src/build/build_config.h
index 36f83e7..128bbc7 100644
--- a/ipc/chromium/src/build/build_config.h
+++ b/ipc/chromium/src/build/build_config.h
@@ -57,6 +57,8 @@
#define ARCH_CPU_ARMEL 1
#define ARCH_CPU_32_BITS 1
#define WCHAR_T_IS_UNSIGNED 1
+#elif defined(__mips__)
+#define ARCH_CPU_MIPS_FAMILY 1
#else
#error Please add support for your architecture in build/build_config.h
#endif
|
