# Copyright (c) 2021, RISC OS Open Ltd # 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 RISC OS Open Ltd 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 HOLDER 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. # # A8.6.66 LDRD (immediate) LDRD_imm_A1(Rt,Rn,imm4H,imm4L,P,U,W) { if(Rt==15) return aborttrap_ERROR(Unexpected); /* Don't allow some guy's dodgy code to cause us to access a nonexistant register! */ return aborttrap_LDRD_imm(ctx,Rt,Rt+1,Rn,(imm4H<<4)|imm4L,P,U,!P || W); } # A8.6.67 LDRD (literal) LDRD_lit_A1(Rt,imm4H,imm4L,U,nonstandard) { if(nonstandard || (Rt==15)) return aborttrap_ERROR(Unexpected); return aborttrap_LDRD_lit(ctx,Rt,Rt+1,(imm4H<<4)|imm4L,U); } # A8.6.68 LDRD (register) LDRD_reg_A1(Rt,Rn,Rm,P,U,W,nonstandard) { if(nonstandard || (Rt==15)) return aborttrap_ERROR(Unexpected); return aborttrap_LDRD_reg(ctx,Rt,Rt+1,Rn,Rm,P,U,!P || W); } # A8.6.200 STRD (immediate) STRD_imm_A1(Rt,Rn,imm4H,imm4L,P,U,W) { if(Rt==15) return aborttrap_ERROR(Unexpected); /* Don't allow some guy's dodgy code to cause us to access a nonexistant register! */ return aborttrap_STRD_imm(ctx,Rt,Rt+1,Rn,(imm4H<<4)|imm4L,P,U,!P || W); } # A8.6.201 STRD (register) STRD_reg_A1(Rt,Rn,Rm,P,U,W,nonstandard) { if(nonstandard || (Rt==15)) return aborttrap_ERROR(Unexpected); return aborttrap_STRD_reg(ctx,Rt,Rt+1,Rn,Rm,P,U,!P || W); }