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Diffstat (limited to 'src/arch/arm/isa/formats/crypto64.isa')
-rw-r--r-- | src/arch/arm/isa/formats/crypto64.isa | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/src/arch/arm/isa/formats/crypto64.isa b/src/arch/arm/isa/formats/crypto64.isa new file mode 100644 index 000000000..8975c2d93 --- /dev/null +++ b/src/arch/arm/isa/formats/crypto64.isa @@ -0,0 +1,100 @@ +// -*- mode:c++ -*- + +// Copyright (c) 2018 ARM Limited +// All rights reserved +// +// The license below extends only to copyright in the software and shall +// not be construed as granting a license to any other intellectual +// property including but not limited to intellectual property relating +// to a hardware implementation of the functionality of the software +// licensed hereunder. You may use the software subject to the license +// terms below provided that you ensure that this notice is replicated +// unmodified and in its entirety in all distributions of the software, +// modified or unmodified, in source code or in binary form. +// +// 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 the copyright holders 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. +// +// Authors: Giacomo Travaglini + +let {{ + header_output = ''' + StaticInstPtr + decodeCryptoThreeRegSHA(ExtMachInst machInst); + + StaticInstPtr + decodeCryptoTwoRegSHA(ExtMachInst machInst); + ''' + + decoder_output = ''' + + StaticInstPtr + decodeCryptoTwoRegSHA(ExtMachInst machInst) + { + const auto opcode = bits(machInst, 16, 12); + const auto size = bits(machInst, 23, 22); + + IntRegIndex rd = (IntRegIndex) (uint8_t) bits(machInst, 4, 0); + IntRegIndex rn = (IntRegIndex) (uint8_t) bits(machInst, 9, 5); + + if (size) { + // UNALLOCATED + return new Unknown64(machInst); + } else { + switch (opcode) { + case 0x0: return new SHA1H64(machInst, rd, rn); + case 0x1: return new SHA1SU164(machInst, rd, rn); + case 0x2: return new SHA256SU064(machInst, rd, rn); + default: return new Unknown64(machInst); + } + } + } + + StaticInstPtr + decodeCryptoThreeRegSHA(ExtMachInst machInst) + { + const auto opcode = bits(machInst, 14, 12); + const auto size = bits(machInst, 23, 22); + + IntRegIndex rd = (IntRegIndex) (uint8_t) bits(machInst, 4, 0); + IntRegIndex rn = (IntRegIndex) (uint8_t) bits(machInst, 9, 5); + IntRegIndex rm = (IntRegIndex) (uint8_t) bits(machInst, 20, 16); + + if (size) { + // UNALLOCATED + return new Unknown64(machInst); + } else { + switch (opcode) { + case 0x0: return new SHA1C64(machInst, rd, rn, rm); + case 0x1: return new SHA1P64(machInst, rd, rn, rm); + case 0x2: return new SHA1M64(machInst, rd, rn, rm); + case 0x3: return new SHA1SU064(machInst, rd, rn, rm); + case 0x4: return new SHA256H64(machInst, rd, rn, rm); + case 0x5: return new SHA256H264(machInst, rd, rn, rm); + case 0x6: return new SHA256SU164(machInst, rd, rn, rm); + default: return new Unknown64(machInst); + } + } + } + ''' +}}; |