| # Copyright (c) 2007 The Hewlett-Packard Development Company |
| # 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. |
| |
| microcode = ''' |
| def macroop CALL_NEAR_I |
| { |
| # Make the default data size of calls 64 bits in 64 bit mode |
| .adjust_env oszIn64Override |
| .function_call |
| .control_direct |
| |
| limm t1, imm |
| rdip t7 |
| # Check target of call |
| st t7, ss, [0, t0, rsp], "-env.dataSize", addressSize=ssz |
| subi rsp, rsp, dsz, dataSize=ssz |
| wrip t7, t1 |
| }; |
| |
| def macroop CALL_NEAR_R |
| { |
| # Make the default data size of calls 64 bits in 64 bit mode |
| .adjust_env oszIn64Override |
| .function_call |
| .control_indirect |
| |
| rdip t1 |
| # Check target of call |
| st t1, ss, [0, t0, rsp], "-env.dataSize", addressSize=ssz |
| subi rsp, rsp, dsz, dataSize=ssz |
| wripi reg, 0 |
| }; |
| |
| def macroop CALL_NEAR_M |
| { |
| # Make the default data size of calls 64 bits in 64 bit mode |
| .adjust_env oszIn64Override |
| .function_call |
| .control_indirect |
| |
| rdip t7 |
| ld t1, seg, sib, disp |
| # Check target of call |
| st t7, ss, [0, t0, rsp], "-env.dataSize", addressSize=ssz |
| subi rsp, rsp, dsz, dataSize=ssz |
| wripi t1, 0 |
| }; |
| |
| def macroop CALL_NEAR_P |
| { |
| # Make the default data size of calls 64 bits in 64 bit mode |
| .adjust_env oszIn64Override |
| .function_call |
| .control_indirect |
| |
| rdip t7 |
| ld t1, seg, riprel, disp |
| # Check target of call |
| st t7, ss, [0, t0, rsp], "-env.dataSize", addressSize=ssz |
| subi rsp, rsp, dsz, dataSize=ssz |
| wripi t1, 0 |
| }; |
| |
| def macroop CALL_FAR_REAL_I { |
| .function_call |
| .control_indirect |
| |
| limm t1, imm, dataSize=8 |
| |
| # Multiply the data size by 8 to get the size of the offset in bits. |
| limm t3, dsz, dataSize=8 |
| slli t3, t3, 3, dataSize=8 |
| |
| # Extract the selector from the far pointer. |
| srl t2, t1, t3, dataSize=8 |
| zexti t2, t2, 15, dataSize=8 |
| # Extract the offset from the far pointer. |
| zext t1, t1, t3, dataSize=8 |
| |
| # Compute the base. |
| slli t3, t2, 4, dataSize=8 |
| |
| # Make sure pushing the RIP will work after we push cs. |
| cda ss, [1, t0, rsp], "-env.dataSize * 2", addressSize=ssz |
| |
| # Push CS. |
| rdsel t4, cs, dataSize=8 |
| st t4, ss, [1, t0, rsp], "-env.dataSize", addressSize=ssz |
| # Push RIP. |
| rdip t7 |
| st t7, ss, [1, t0, rsp], "-env.dataSize * 2", addressSize=ssz |
| subi rsp, rsp, "env.dataSize * 2", dataSize=ssz |
| |
| # Install the new selector, base and RIP values. |
| wrsel cs, t2, dataSize=2 |
| wrbase cs, t3, dataSize=8 |
| wrip t1, t0 |
| }; |
| |
| def macroop CALL_FAR_REAL_M { |
| .function_call |
| .control_indirect |
| |
| lea t1, seg, sib, disp, dataSize=asz |
| # Load the selector. |
| ld t2, seg, [1, t0, t1], dsz, dataSize=2 |
| # Load the offset. |
| ld t1, seg, [1, t0, t1] |
| |
| # Compute the base. |
| zexti t3, t2, 15, dataSize=8 |
| slli t3, t3, 4, dataSize=8 |
| |
| # Make sure pushing the RIP will work after we push cs. |
| cda ss, [1, t0, rsp], "-env.dataSize * 2", addressSize=ssz |
| |
| # Push CS. |
| rdsel t4, cs, dataSize=8 |
| st t4, ss, [1, t0, rsp], "-env.dataSize", addressSize=ssz |
| # Push RIP. |
| rdip t7 |
| st t7, ss, [1, t0, rsp], "-env.dataSize * 2", addressSize=ssz |
| subi rsp, rsp, "env.dataSize * 2", dataSize=ssz |
| |
| # Install the new selector, base and RIP values. |
| wrsel cs, t2, dataSize=2 |
| wrbase cs, t3, dataSize=8 |
| wrip t1, t0 |
| }; |
| |
| def macroop CALL_FAR_REAL_P { |
| panic "Far call in real mode doesn't support RIP addressing." |
| }; |
| ''' |
| #let {{ |
| # class CALL(Inst): |
| # "GenFault ${new UnimpInstFault}" |
| #}}; |