| # 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 = ''' |
| |
| # |
| # Real mode versions of the load far pointer instructions. |
| # |
| |
| def macroop LDS_REAL_R_M { |
| # Calculate the address of the pointer. |
| lea t1, seg, sib, disp, dataSize=asz |
| |
| # Load the selector into a temporary. |
| ld t2, seg, [1, t0, t1], dsz, dataSize=2 |
| # Load the offset. |
| ld reg, seg, [1, t0, t1], 0 |
| # Install the selector value. |
| wrsel ds, t2 |
| # Make sure there isn't any junk in the upper bits of the base. |
| mov t2, t0, t2 |
| # Compute and set the base. |
| slli t2, t2, 4, dataSize=8 |
| wrbase ds, t2, dataSize=8 |
| }; |
| |
| def macroop LES_REAL_R_M { |
| # Calculate the address of the pointer. |
| lea t1, seg, sib, disp, dataSize=asz |
| |
| # Load the selector into a temporary. |
| ld t2, seg, [1, t0, t1], dsz, dataSize=2 |
| # Load the offset. |
| ld reg, seg, [1, t0, t1], 0 |
| # Install the selector value. |
| wrsel es, t2 |
| # Make sure there isn't any junk in the upper bits of the base. |
| mov t2, t0, t2 |
| # Compute and set the base. |
| slli t2, t2, 4, dataSize=8 |
| wrbase es, t2, dataSize=8 |
| }; |
| |
| def macroop LFS_REAL_R_M { |
| # Calculate the address of the pointer. |
| lea t1, seg, sib, disp, dataSize=asz |
| |
| # Load the selector into a temporary. |
| ld t2, seg, [1, t0, t1], dsz, dataSize=2 |
| # Load the offset. |
| ld reg, seg, [1, t0, t1], 0 |
| # Install the selector value. |
| wrsel fs, t2 |
| # Make sure there isn't any junk in the upper bits of the base. |
| mov t2, t0, t2 |
| # Compute and set the base. |
| slli t2, t2, 4, dataSize=8 |
| wrbase fs, t2, dataSize=8 |
| }; |
| |
| def macroop LGS_REAL_R_M { |
| # Calculate the address of the pointer. |
| lea t1, seg, sib, disp, dataSize=asz |
| |
| # Load the selector into a temporary. |
| ld t2, seg, [1, t0, t1], dsz, dataSize=2 |
| # Load the offset. |
| ld reg, seg, [1, t0, t1], 0 |
| # Install the selector value. |
| wrsel gs, t2 |
| # Make sure there isn't any junk in the upper bits of the base. |
| mov t2, t0, t2 |
| # Compute and set the base. |
| slli t2, t2, 4, dataSize=8 |
| wrbase gs, t2, dataSize=8 |
| }; |
| |
| def macroop LSS_REAL_R_M { |
| # Calculate the address of the pointer. |
| lea t1, seg, sib, disp, dataSize=asz |
| |
| # Load the selector into a temporary. |
| ld t2, seg, [1, t0, t1], dsz, dataSize=2 |
| # Load the offset. |
| ld reg, seg, [1, t0, t1], 0 |
| # Install the selector value. |
| wrsel ss, t2 |
| # Make sure there isn't any junk in the upper bits of the base. |
| mov t2, t0, t2 |
| # Compute and set the base. |
| slli t2, t2, 4, dataSize=8 |
| wrbase ss, t2, dataSize=8 |
| }; |
| |
| # Versions for RIP relative addressing, even though these instructions are |
| # illegal in 64 bit mode, where RIP relative addressing is available. |
| |
| def macroop LDS_REAL_R_P { |
| panic "Real mode LDS doesn't support RIP relative addressing." |
| }; |
| |
| def macroop LES_REAL_R_P { |
| panic "Real mode LES doesn't support RIP relative addressing." |
| }; |
| |
| def macroop LFS_REAL_R_P { |
| panic "Real mode LFS doesn't support RIP relative addressing." |
| }; |
| |
| def macroop LGS_REAL_R_P { |
| panic "Real mode LGS doesn't support RIP relative addressing." |
| }; |
| |
| def macroop LSS_REAL_R_P { |
| panic "Real mode LSS doesn't support RIP relative addressing." |
| }; |
| |
| ''' |
| #let {{ |
| # class LDS(Inst): |
| # "GenFault ${new UnimpInstFault}" |
| # class LES(Inst): |
| # "GenFault ${new UnimpInstFault}" |
| # class LFS(Inst): |
| # "GenFault ${new UnimpInstFault}" |
| # class LGS(Inst): |
| # "GenFault ${new UnimpInstFault}" |
| # class LSS(Inst): |
| # "GenFault ${new UnimpInstFault}" |
| # class MOV_SEG(Inst): |
| # "GenFault ${new UnimpInstFault}" |
| # class POP(Inst): |
| # "GenFault ${new UnimpInstFault}" |
| #}}; |