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/* |
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* UAE - The Un*x Amiga Emulator |
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* compiler/gencomp.c - MC680x0 compilation generator |
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* |
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* MC68000 compilation generator |
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* Based on work Copyright 1995, 1996 Bernd Schmidt |
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* Changes for UAE-JIT Copyright 2000 Bernd Meyer |
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* |
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* Based on work Copyright 1995, 1996 Bernd Schmidt. Changes Copyright 2000 |
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* Bernd Meyer |
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* Adaptation for Basilisk II and improvements, copyright 2000-2004 |
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* Gwenole Beauchesne |
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* |
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* Basilisk II (C) 1997-2004 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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– |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <stdarg.h> |
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"\tint one=scratchie++;\n" |
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"\tif (needed_flags&FLAG_Z) {\n" |
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"\tmov_l_ri(zero,0);\n" |
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"\tmov_l_ri(one,1);\n" |
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"\tmov_l_ri(one,-1);\n" |
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"\tmake_flags_live();\n" |
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"\tcmov_l_rr(zero,one,5);\n" |
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"\t}\n"); |
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"\t%s_l(%s,%s);\n",op,dst,src); |
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break; |
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} |
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+ |
comprintf("\tlive_flags();\n"); |
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comprintf("\tif (needed_flags&FLAG_Z) {\n" |
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"\tcmov_l_rr(zero,one,5);\n" |
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"\tbsf_l_rr(zero,zero);\n" |
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"\tset_zero(zero, one);\n" /* No longer need one */ |
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"\tlive_flags();\n" |
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"\t}\n"); |
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comprintf("\tlive_flags();\n"); |
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comprintf("\tend_needflags();\n"); |
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duplicate_carry(); |
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comprintf("if (!(needed_flags & FLAG_CZNV)) dont_care_flags();\n"); |
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genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0); |
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start_brace(); |
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comprintf("\tint s=scratchie++;\n" |
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"\tint tmp=scratchie++;\n" |
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"\tmov_l_rr(s,src);\n"); |
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if (curi->size == sz_byte) |
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comprintf("\tand_l_ri(s,7);\n"); |
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case i_BCLR: op="btr"; break; |
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case i_BSET: op="bts"; break; |
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case i_BTST: op="bt"; need_write=0; break; |
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default: abort(); |
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} |
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comprintf("\t%s_l_rr(dst,s);\n" /* Answer now in C */ |
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"\tsbb_l(s,s);\n" /* s is 0 if bit was 0, |
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-1 otherwise */ |
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"\tmake_flags_live();\n" /* Get the flags back */ |
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"\tdont_care_flags();\n" |
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"\tstart_needflags();\n" |
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"\tbsf_l_rr(s,s);\n" |
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"\tlive_flags();\n" |
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"\tend_needflags();\n",op); |
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"\tsbb_l(s,s);\n" /* s is 0 if bit was 0, -1 otherwise */ |
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"\tmake_flags_live();\n" /* Get the flags back */ |
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"\tdont_care_flags();\n",op); |
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if (!noflags) { |
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comprintf("\tstart_needflags();\n" |
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"\tset_zero(s,tmp);\n" |
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"\tlive_flags();\n" |
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"\tend_needflags();\n"); |
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} |
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if (need_write) |
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genastore ("dst", curi->dmode, "dstreg", curi->size, "dst"); |
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} |
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gen_update_next_handler(); |
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break; |
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case i_BSR: |
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if (curi->size==sz_long) |
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failure; |
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is_const_jump; |
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genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
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start_brace(); |
