5de6f3c0f4
Update our copy of libvixl to upstream's 1.12 release. The major benefit from QEMU's point of view is that some instructions previously disassembled as "unimplemented (System)" are now displayed as something more useful. It also fixes some warnings about format strings that newer w64-mingw32 compilers were emitting. We didn't have any local changes to libvixl so nothing needed to be forward-ported. Although this is a large commit (due to upstream renaming most of the files), only a few of the files changed in this commit are not just straight copies of upstream libvixl files: disas/arm-a64.cc disas/libvixl/Makefile.objs disas/libvixl/README Note that this commit introduces some signed-unsigned comparison warnings on the old mingw compilers. Those compilers have broken TLS support anyway so have only ever been much use for compile tests; anybody still using them should add -Wno-sign-compare to their --extra-cflags. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
84 lines
3.1 KiB
C++
84 lines
3.1 KiB
C++
// Copyright 2014, ARM Limited
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of ARM Limited nor the names of its contributors may be
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// used to endorse or promote products derived from this software without
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// specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef VIXL_CPU_A64_H
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#define VIXL_CPU_A64_H
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#include "vixl/globals.h"
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#include "vixl/a64/instructions-a64.h"
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namespace vixl {
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class CPU {
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public:
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// Initialise CPU support.
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static void SetUp();
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// Ensures the data at a given address and with a given size is the same for
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// the I and D caches. I and D caches are not automatically coherent on ARM
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// so this operation is required before any dynamically generated code can
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// safely run.
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static void EnsureIAndDCacheCoherency(void *address, size_t length);
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// Handle tagged pointers.
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template <typename T>
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static T SetPointerTag(T pointer, uint64_t tag) {
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VIXL_ASSERT(is_uintn(kAddressTagWidth, tag));
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// Use C-style casts to get static_cast behaviour for integral types (T),
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// and reinterpret_cast behaviour for other types.
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uint64_t raw = (uint64_t)pointer;
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VIXL_STATIC_ASSERT(sizeof(pointer) == sizeof(raw));
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raw = (raw & ~kAddressTagMask) | (tag << kAddressTagOffset);
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return (T)raw;
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}
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template <typename T>
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static uint64_t GetPointerTag(T pointer) {
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// Use C-style casts to get static_cast behaviour for integral types (T),
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// and reinterpret_cast behaviour for other types.
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uint64_t raw = (uint64_t)pointer;
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VIXL_STATIC_ASSERT(sizeof(pointer) == sizeof(raw));
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return (raw & kAddressTagMask) >> kAddressTagOffset;
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}
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private:
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// Return the content of the cache type register.
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static uint32_t GetCacheType();
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// I and D cache line size in bytes.
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static unsigned icache_line_size_;
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static unsigned dcache_line_size_;
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};
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} // namespace vixl
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#endif // VIXL_CPU_A64_H
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