508280f566
Update our copy of libvixl to upstream's 1.5 release.
This includes the upstream versions of the fixes we
were carrying locally (commit ffebe899).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1407162987-4659-1-git-send-email-peter.maydell@linaro.org
84 lines
3.1 KiB
C++
84 lines
3.1 KiB
C++
// Copyright 2013, ARM Limited
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
// * Neither the name of ARM Limited nor the names of its contributors may be
|
|
// used to endorse or promote products derived from this software without
|
|
// specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
|
|
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
|
|
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
#ifndef VIXL_CPU_A64_H
|
|
#define VIXL_CPU_A64_H
|
|
|
|
#include "globals.h"
|
|
#include "instructions-a64.h"
|
|
|
|
namespace vixl {
|
|
|
|
class CPU {
|
|
public:
|
|
// Initialise CPU support.
|
|
static void SetUp();
|
|
|
|
// Ensures the data at a given address and with a given size is the same for
|
|
// the I and D caches. I and D caches are not automatically coherent on ARM
|
|
// so this operation is required before any dynamically generated code can
|
|
// safely run.
|
|
static void EnsureIAndDCacheCoherency(void *address, size_t length);
|
|
|
|
// Handle tagged pointers.
|
|
template <typename T>
|
|
static T SetPointerTag(T pointer, uint64_t tag) {
|
|
VIXL_ASSERT(is_uintn(kAddressTagWidth, tag));
|
|
|
|
// Use C-style casts to get static_cast behaviour for integral types (T),
|
|
// and reinterpret_cast behaviour for other types.
|
|
|
|
uint64_t raw = (uint64_t)pointer;
|
|
VIXL_STATIC_ASSERT(sizeof(pointer) == sizeof(raw));
|
|
|
|
raw = (raw & ~kAddressTagMask) | (tag << kAddressTagOffset);
|
|
return (T)raw;
|
|
}
|
|
|
|
template <typename T>
|
|
static uint64_t GetPointerTag(T pointer) {
|
|
// Use C-style casts to get static_cast behaviour for integral types (T),
|
|
// and reinterpret_cast behaviour for other types.
|
|
|
|
uint64_t raw = (uint64_t)pointer;
|
|
VIXL_STATIC_ASSERT(sizeof(pointer) == sizeof(raw));
|
|
|
|
return (raw & kAddressTagMask) >> kAddressTagOffset;
|
|
}
|
|
|
|
private:
|
|
// Return the content of the cache type register.
|
|
static uint32_t GetCacheType();
|
|
|
|
// I and D cache line size in bytes.
|
|
static unsigned icache_line_size_;
|
|
static unsigned dcache_line_size_;
|
|
};
|
|
|
|
} // namespace vixl
|
|
|
|
#endif // VIXL_CPU_A64_H
|