diff options
Diffstat (limited to 'chromium/v8/src/mips/constants-mips.h')
| -rw-r--r-- | chromium/v8/src/mips/constants-mips.h | 65 |
1 files changed, 38 insertions, 27 deletions
diff --git a/chromium/v8/src/mips/constants-mips.h b/chromium/v8/src/mips/constants-mips.h index 5a0870fd218..fc64f7dbbf9 100644 --- a/chromium/v8/src/mips/constants-mips.h +++ b/chromium/v8/src/mips/constants-mips.h @@ -1,29 +1,6 @@ // Copyright 2012 the V8 project authors. 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 Google Inc. 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 AND 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. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. #ifndef V8_MIPS_CONSTANTS_H_ #define V8_MIPS_CONSTANTS_H_ @@ -55,6 +32,18 @@ enum ArchVariants { static const ArchVariants kArchVariant = kMips32r1; #endif +enum Endianness { + kLittle, + kBig +}; + +#if defined(V8_TARGET_LITTLE_ENDIAN) + static const Endianness kArchEndian = kLittle; +#elif defined(V8_TARGET_BIG_ENDIAN) + static const Endianness kArchEndian = kBig; +#else +#error Unknown endianness +#endif #if(defined(__mips_hard_float) && __mips_hard_float != 0) // Use floating-point coprocessor instructions. This flag is raised when @@ -69,6 +58,15 @@ const bool IsMipsSoftFloatABI = true; const bool IsMipsSoftFloatABI = true; #endif +#if defined(V8_TARGET_LITTLE_ENDIAN) +const uint32_t kHoleNanUpper32Offset = 4; +const uint32_t kHoleNanLower32Offset = 0; +#elif defined(V8_TARGET_BIG_ENDIAN) +const uint32_t kHoleNanUpper32Offset = 0; +const uint32_t kHoleNanLower32Offset = 4; +#else +#error Unknown endianness +#endif // Defines constants and accessor classes to assemble, disassemble and // simulate MIPS32 instructions. @@ -124,6 +122,16 @@ const uint32_t kFCSRFlagMask = const uint32_t kFCSRExceptionFlagMask = kFCSRFlagMask ^ kFCSRInexactFlagMask; +// 'pref' instruction hints +const int32_t kPrefHintLoad = 0; +const int32_t kPrefHintStore = 1; +const int32_t kPrefHintLoadStreamed = 4; +const int32_t kPrefHintStoreStreamed = 5; +const int32_t kPrefHintLoadRetained = 6; +const int32_t kPrefHintStoreRetained = 7; +const int32_t kPrefHintWritebackInvalidate = 25; +const int32_t kPrefHintPrepareForStore = 30; + // Helper functions for converting between register numbers and names. class Registers { public: @@ -297,6 +305,8 @@ enum Opcode { LWC1 = ((6 << 3) + 1) << kOpcodeShift, LDC1 = ((6 << 3) + 5) << kOpcodeShift, + PREF = ((6 << 3) + 3) << kOpcodeShift, + SWC1 = ((7 << 3) + 1) << kOpcodeShift, SDC1 = ((7 << 3) + 5) << kOpcodeShift, @@ -494,7 +504,8 @@ inline Condition NegateCondition(Condition cc) { } -inline Condition ReverseCondition(Condition cc) { +// Commute a condition such that {a cond b == b cond' a}. +inline Condition CommuteCondition(Condition cc) { switch (cc) { case Uless: return Ugreater; @@ -514,7 +525,7 @@ inline Condition ReverseCondition(Condition cc) { return greater_equal; default: return cc; - }; + } } |