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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 2000-2002 |
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* Gwenole Beauchesne |
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* |
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* Basilisk II (C) 1997-2002 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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#include <stdio.h> |
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#include <stdlib.h> |
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#include <stdarg.h> |
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#define uses_cmov global_cmov=1 |
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#define mayfail global_mayfail=1 |
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#define uses_fpu global_fpu=1 |
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#define uses_setzflg global_setzflg=1 |
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int hack_opcode; |
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static int long_opcode; |
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static int global_mayfail; |
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static int global_fpu; |
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static int global_setzflg; |
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static char endstr[1000]; |
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static char lines[100000]; |
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case flag_addx: |
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case flag_subx: |
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uses_setzflg; |
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uses_cmov; |
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comprintf("\tdont_care_flags();\n"); |
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{ |
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} |
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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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"\tsetzflg_l(zero);\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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case i_BTST: op="bt"; need_write=0; break; |
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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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uses_setzflg; |
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comprintf("\tstart_needflags();\n" |
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"\tsetzflg_l(s);\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(); |
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if (global_isaddx) flags|=8; |
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if (global_iscjump) flags|=16; |
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if (global_fpu) flags|=32; |
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if (global_setzflg) flags|=64; |
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comprintf ("}\n"); |
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