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38 |
julius |
/* bfin-lex.l ADI Blackfin lexer
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Copyright 2005, 2006, 2007
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Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS 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 3, or (at your option)
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any later version.
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GAS 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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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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%{
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#include "as.h"
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#include "bfin-defs.h"
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#include "bfin-parse.h"
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static long parse_int (char **end);
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static int parse_halfreg (Register *r, int cl, char *hr);
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static int parse_reg (Register *r, int type, char *rt);
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int yylex (void);
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#define _REG yylval.reg
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%}
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/* Define Start States ... Actually we will use exclusion.
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If no start state is specified it should match any state
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and would match some keyword rules only with
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initial. */
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%s KEYWORD
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%%
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[sS][fF][tT][rR][eE][sS][eE][tT] _REG.regno = REG_sftreset; return REG;
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[oO][mM][oO][dD][eE] _REG.regno = REG_omode; return REG;
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[iI][dD][lL][eE]_[rR][eE][qQ] _REG.regno = REG_idle_req; return REG;
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[hH][wW][eE][rR][rR][cC][aA][uU][sS][eE] _REG.regno = REG_hwerrcause; return REG;
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[eE][xX][cC][aA][uU][sS][eE] _REG.regno = REG_excause; return REG;
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[eE][mM][uU][cC][aA][uU][sS][eE] _REG.regno = REG_emucause; return REG;
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[zZ] return Z;
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[xX] return X;
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[wW]32 yylval.value = M_W32; return MMOD;
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[wW] return W;
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[vV][iI][tT]_[mM][aA][xX] return VIT_MAX;
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[vV] return V; /* Special: V is a statflag and a modifier. */
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[uU][sS][pP] _REG.regno = REG_USP; return REG;
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| 57 |
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[tT][lL] return TL;
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| 58 |
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[tT][hH] return TH;
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| 59 |
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[tT][fF][uU] yylval.value = M_TFU; return MMOD;
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| 60 |
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[tT][eE][sS][tT][sS][eE][tT] return TESTSET;
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[tT] yylval.value = M_T; return MMOD;
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[sS] return S;
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[sS][yY][sS][cC][fF][gG] _REG.regno = REG_SYSCFG; return REG;
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[sS][tT][iI] return STI;
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[sS][sS][yY][nN][cC] return SSYNC;
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[sS][pP]"."[lL] _REG.regno = REG_SP; return HALF_REG;
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[sS][pP]"."[hH] _REG.regno = REG_SP | F_REG_HIGH; return HALF_REG;
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[sS][pP] _REG.regno = REG_SP; return REG;
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[sS][iI][gG][nN][bB][iI][tT][sS] return SIGNBITS;
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[sS][iI][gG][nN] return SIGN;
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[sS][eE][qQ][sS][tT][aA][tT] _REG.regno = REG_SEQSTAT; return REG;
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[sS][eE][aA][rR][cC][hH] return SEARCH;
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[sS][hH][iI][fF][tT] return SHIFT;
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[sS][cC][oO] return SCO;
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| 76 |
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[sS][aA][aA] return SAA;
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[sS]2[rR][nN][dD] yylval.value = M_S2RND; return MMOD;
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[rR][tT][xX] return RTX;
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[rR][tT][sS] return RTS;
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[rR][tT][nN] return RTN;
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| 81 |
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[rR][tT][iI] return RTI;
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[rR][tT][eE] return RTE;
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[rR][oO][tT] return ROT;
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[rR][nN][dD]20 return RND20;
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[rR][nN][dD]12 return RND12;
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[rR][nN][dD][lL] return RNDL;
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[rR][nN][dD][hH] return RNDH;
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[rR][nN][dD] return RND;
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| 90 |
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[rR][0-7]"."[lLhHbB] return parse_halfreg(&yylval.reg, T_REG_R, yytext);
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| 92 |
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[rR][eE][tT][sS] _REG.regno = REG_RETS; return REG;
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[rR][eE][tT][iI] _REG.regno = REG_RETI; return REG;
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[rR][eE][tT][xX] _REG.regno = REG_RETX; return REG;
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[rR][eE][tT][nN] _REG.regno = REG_RETN; return REG;
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[rR][eE][tT][eE] _REG.regno = REG_RETE; return REG;
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[eE][mM][uU][dD][aA][tT] _REG.regno = REG_EMUDAT; return REG;
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[rR][aA][iI][sS][eE] return RAISE;
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| 100 |
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[rR][0-7] return parse_reg (&yylval.reg, T_REG_R, yytext);
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[rR] return R;
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[pP][rR][nN][tT] return PRNT;
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[pP][cC] return PC;
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[pP][aA][cC][kK] return PACK;
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| 107 |
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[pP][0-5]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_P, yytext);
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[pP][0-5] return parse_reg (&yylval.reg, T_REG_P, yytext);
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| 110 |
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[oO][uU][tT][cC] return OUTC;
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| 111 |
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[oO][nN][eE][sS] return ONES;
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| 112 |
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| 113 |
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[nN][oO][tT] return NOT;
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| 114 |
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[nN][oO][pP] return NOP;
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| 115 |
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[mM][nN][oO][pP] return MNOP;
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| 116 |
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[nN][sS] return NS;
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| 117 |
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| 118 |
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| 119 |
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[mM][iI][nN] return MIN;
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| 120 |
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[mM][aA][xX] return MAX;
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| 121 |
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| 122 |
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[mM][0-3]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_M, yytext);
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[mM][0-3] return parse_reg (&yylval.reg, T_REG_M, yytext);
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| 125 |
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[mM] return M;
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| 126 |
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[lL][tT] return LT;
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| 127 |
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[lL][sS][hH][iI][fF][tT] return LSHIFT;
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| 128 |
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[lL][sS][eE][tT][uU][pP] return LSETUP;
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| 129 |
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[lL][oO][oO][pP] return LOOP;
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| 130 |
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[lL][oO][oO][pP]_[bB][eE][gG][iI][nN] return LOOP_BEGIN;
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[lL][oO][oO][pP]_[eE][nN][dD] return LOOP_END;
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| 132 |
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| 133 |
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[lL][eE] return LE;
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| 134 |
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[lL][cC]0 _REG.regno = REG_LC0; return REG;
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| 135 |
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[lL][tT]0 _REG.regno = REG_LT0; return REG;
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[lL][bB]0 _REG.regno = REG_LB0; return REG;
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[lL][cC]1 _REG.regno = REG_LC1; return REG;
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| 138 |
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[lL][tT]1 _REG.regno = REG_LT1; return REG;
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| 139 |
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[lL][bB]1 _REG.regno = REG_LB1; return REG;
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| 140 |
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| 141 |
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[lL][0-3]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_L, yytext);
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[lL][0-3] return parse_reg (&yylval.reg, T_REG_L, yytext);
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| 143 |
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[lL][oO] return LO;
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| 144 |
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[jJ][uU][mM][pP]"."[sS] { BEGIN 0; return JUMP_DOT_S;}
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[jJ][uU][mM][pP]"."[lL] { BEGIN 0; return JUMP_DOT_L;}
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[jJ][uU][mM][pP] { BEGIN 0; return JUMP;}
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| 147 |
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[jJ][uU][mM][pP]"."[xX] { BEGIN 0; return JUMP_DOT_L; }
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| 148 |
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[iI][uU] yylval.value = M_IU; return MMOD;
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| 149 |
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[iI][sS][sS]2 yylval.value = M_ISS2; return MMOD;
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| 150 |
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[iI][sS] yylval.value = M_IS; return MMOD;
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| 151 |
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[iI][hH] yylval.value = M_IH; return MMOD;
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| 152 |
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[iI][fF] return IF;
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| 153 |
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[iI][0-3]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_I, yytext);
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| 154 |
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[iI][0-3] return parse_reg (&yylval.reg, T_REG_I, yytext);
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| 155 |
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[hH][lL][tT] return HLT;
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| 156 |
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[hH][iI] return HI;
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| 157 |
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[gG][tT] return GT;
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| 158 |
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[gG][eE] return GE;
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| 159 |
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[fF][uU] yylval.value = M_FU; return MMOD;
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| 160 |
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[fF][pP] _REG.regno = REG_FP; return REG;
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| 161 |
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[fF][pP]"."[lL] _REG.regno = REG_FP; return HALF_REG;
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| 162 |
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[fF][pP]"."[hH] _REG.regno = REG_FP | F_REG_HIGH; return HALF_REG;
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| 163 |
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| 164 |
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[eE][xX][tT][rR][aA][cC][tT] return EXTRACT;
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| 165 |
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[eE][xX][pP][aA][dD][jJ] return EXPADJ;
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| 166 |
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[eE][xX][cC][pP][tT] return EXCPT;
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| 167 |
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[eE][mM][uU][eE][xX][cC][pP][tT] return EMUEXCPT;
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| 168 |
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[dD][iI][vV][sS] return DIVS;
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| 169 |
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[dD][iI][vV][qQ] return DIVQ;
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| 170 |
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[dD][iI][sS][aA][lL][gG][nN][eE][xX][cC][pP][tT] return DISALGNEXCPT;
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| 171 |
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[dD][eE][pP][oO][sS][iI][tT] return DEPOSIT;
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| 172 |
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[dD][bB][gG][hH][aA][lL][tT] return DBGHALT;
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| 173 |
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[dD][bB][gG][cC][mM][pP][lL][xX] return DBGCMPLX;
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| 174 |
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[dD][bB][gG][aA][lL] return DBGAL;
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| 175 |
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[dD][bB][gG][aA][hH] return DBGAH;
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| 176 |
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[dD][bB][gG][aA] return DBGA;
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| 177 |
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[dD][bB][gG] return DBG;
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| 178 |
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[cC][yY][cC][lL][eE][sS]2 { _REG.regno = REG_CYCLES2; return REG; }
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| 179 |
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[cC][yY][cC][lL][eE][sS] { _REG.regno = REG_CYCLES; return REG; }
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| 180 |
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[cC][sS][yY][nN][cC] return CSYNC;
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| 181 |
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[cC][oO] return CO;
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| 182 |
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[cC][lL][iI] return CLI;
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| 183 |
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| 184 |
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[cC][cC] _REG.regno = REG_CC; return CCREG;
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| 185 |
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[cC][aA][lL][lL]"."[xX] { BEGIN 0; return CALL;}
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| 186 |
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[cC][aA][lL][lL] { BEGIN 0; return CALL;}
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| 187 |
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[bB][yY][tT][eE][uU][nN][pP][aA][cC][kK] return BYTEUNPACK;
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| 188 |
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[bB][yY][tT][eE][pP][aA][cC][kK] return BYTEPACK;
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| 189 |
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[bB][yY][tT][eE][oO][pP]16[mM] return BYTEOP16M;
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| 190 |
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[bB][yY][tT][eE][oO][pP]16[pP] return BYTEOP16P;
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| 191 |
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[bB][yY][tT][eE][oO][pP]3[pP] return BYTEOP3P;
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| 192 |
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[bB][yY][tT][eE][oO][pP]2[mM] return BYTEOP2M;
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| 193 |
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[bB][yY][tT][eE][oO][pP]2[pP] return BYTEOP2P;
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| 194 |
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[bB][yY][tT][eE][oO][pP]1[pP] return BYTEOP1P;
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| 195 |
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[bB][yY] return BY;
|
| 196 |
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[bB][xX][oO][rR][sS][hH][iI][fF][tT] return BXORSHIFT;
|
| 197 |
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[bB][xX][oO][rR] return BXOR;
|
| 198 |
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|
|
| 199 |
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[bB][rR][eE][vV] return BREV;
|
| 200 |
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[bB][pP] return BP;
|
| 201 |
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[bB][iI][tT][tT][sS][tT] return BITTST;
|
| 202 |
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[bB][iI][tT][tT][gG][lL] return BITTGL;
|
| 203 |
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[bB][iI][tT][sS][eE][tT] return BITSET;
|
| 204 |
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[bB][iI][tT][mM][uU][xX] return BITMUX;
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| 205 |
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[bB][iI][tT][cC][lL][rR] return BITCLR;
|
| 206 |
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[bB][0-3]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_B, yytext);
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| 207 |
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[bB][0-3] return parse_reg (&yylval.reg, T_REG_B, yytext);
|
| 208 |
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[bB] return B;
|
| 209 |
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[aA][zZ] _REG.regno = S_AZ; return STATUS_REG;
|
| 210 |
|
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[aA][nN] _REG.regno = S_AN; return STATUS_REG;
|
| 211 |
|
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[aA][qQ] _REG.regno = S_AQ; return STATUS_REG;
|
| 212 |
|
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[aA][cC]0 _REG.regno = S_AC0; return STATUS_REG;
|
| 213 |
|
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[aA][cC]1 _REG.regno = S_AC1; return STATUS_REG;
|
| 214 |
|
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[aA][vV]0 _REG.regno = S_AV0; return STATUS_REG;
|
| 215 |
|
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[aA][vV]0[sS] _REG.regno = S_AV0S; return STATUS_REG;
|
| 216 |
|
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[aA][vV]1 _REG.regno = S_AV1; return STATUS_REG;
|
| 217 |
|
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[aA][vV]1[sS] _REG.regno = S_AV1S; return STATUS_REG;
|
| 218 |
|
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[vV] _REG.regno = S_V; return STATUS_REG;
|
| 219 |
|
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[vV][sS] _REG.regno = S_VS; return STATUS_REG;
|
| 220 |
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| 221 |
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| 222 |
|
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[aA][sS][tT][aA][tT] _REG.regno = REG_ASTAT; return REG;
|
| 223 |
|
|
[aA][sS][hH][iI][fF][tT] return ASHIFT;
|
| 224 |
|
|
[aA][sS][lL] return ASL;
|
| 225 |
|
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[aA][sS][rR] return ASR;
|
| 226 |
|
|
[aA][lL][iI][gG][nN]8 return ALIGN8;
|
| 227 |
|
|
[aA][lL][iI][gG][nN]16 return ALIGN16;
|
| 228 |
|
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[aA][lL][iI][gG][nN]24 return ALIGN24;
|
| 229 |
|
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[aA]1"."[lL] return A_ONE_DOT_L;
|
| 230 |
|
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[aA]0"."[lL] return A_ZERO_DOT_L;
|
| 231 |
|
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[aA]1"."[hH] return A_ONE_DOT_H;
|
| 232 |
|
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[aA]0"."[hH] return A_ZERO_DOT_H;
|
| 233 |
|
|
[aA][bB][sS] return ABS;
|
| 234 |
|
|
abort return ABORT;
|
| 235 |
|
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[aA]1"."[xX] _REG.regno = REG_A1x; return REG;
|
| 236 |
|
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[aA]1"."[wW] _REG.regno = REG_A1w; return REG;
|
| 237 |
|
|
[aA]1 _REG.regno = REG_A1; return REG_A_DOUBLE_ONE;
|
| 238 |
|
|
[aA]0"."[xX] _REG.regno = REG_A0x; return REG;
|
| 239 |
|
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[aA]0"."[wW] _REG.regno = REG_A0w; return REG;
|
| 240 |
|
|
[aA]0 _REG.regno = REG_A0; return REG_A_DOUBLE_ZERO;
|
| 241 |
|
|
[Gg][Oo][Tt] return GOT;
|
| 242 |
|
|
[Gg][Oo][Tt]"17"[Mm]"4" return GOT17M4;
|
| 243 |
|
|
[Ff][Uu][Nn][Cc][Dd][Ee][Ss][Cc]"_"[Gg][Oo][Tt]"17"[Mm]"4" return FUNCDESC_GOT17M4;
|
| 244 |
|
|
[Pp][Ll][Tt][Pp][Cc] return PLTPC;
|
| 245 |
|
|
|
| 246 |
|
|
|
| 247 |
|
|
"~" return TILDA;
|
| 248 |
|
|
"|=" return _BAR_ASSIGN;
|
| 249 |
|
|
"|" return BAR;
|
| 250 |
|
|
"^=" return _CARET_ASSIGN;
|
| 251 |
|
|
"^" return CARET;
|
| 252 |
|
|
"]" return RBRACK;
|
| 253 |
|
|
"[" return LBRACK;
|
| 254 |
|
|
">>>=" return _GREATER_GREATER_GREATER_THAN_ASSIGN;
|
| 255 |
|
|
">>=" return _GREATER_GREATER_ASSIGN;
|
| 256 |
|
|
">>>" return _GREATER_GREATER_GREATER;
|
| 257 |
|
|
">>" return GREATER_GREATER;
|
| 258 |
|
|
"==" return _ASSIGN_ASSIGN;
|
| 259 |
|
|
"=" return ASSIGN;
|
| 260 |
|
|
"<=" return _LESS_THAN_ASSIGN;
|
| 261 |
|
|
"<<=" return _LESS_LESS_ASSIGN;
|
| 262 |
|
|
"<<" return LESS_LESS;
|
| 263 |
|
|
"<" return LESS_THAN;
|
| 264 |
|
|
"(" return LPAREN;
|
| 265 |
|
|
")" return RPAREN;
|
| 266 |
|
|
":" return COLON;
|
| 267 |
|
|
"/" return SLASH;
|
| 268 |
|
|
"-=" return _MINUS_ASSIGN;
|
| 269 |
|
|
"+|+" return _PLUS_BAR_PLUS;
|
| 270 |
|
|
"-|+" return _MINUS_BAR_PLUS;
|
| 271 |
|
|
"+|-" return _PLUS_BAR_MINUS;
|
| 272 |
|
|
"-|-" return _MINUS_BAR_MINUS;
|
| 273 |
|
|
"--" return _MINUS_MINUS;
|
| 274 |
|
|
"-" return MINUS;
|
| 275 |
|
|
"," return COMMA;
|
| 276 |
|
|
"+=" return _PLUS_ASSIGN;
|
| 277 |
|
|
"++" return _PLUS_PLUS;
|
| 278 |
|
|
"+" return PLUS;
|
| 279 |
|
|
"*=" return _STAR_ASSIGN;
|
| 280 |
|
|
"*" return STAR;
|
| 281 |
|
|
"&=" return _AMPERSAND_ASSIGN;
|
| 282 |
|
|
"&" return AMPERSAND;
|
| 283 |
|
|
"%" return PERCENT;
|
| 284 |
|
|
"!" return BANG;
|
| 285 |
|
|
";" return SEMICOLON;
|
| 286 |
|
|
"=!" return _ASSIGN_BANG;
|
| 287 |
|
|
"||" return DOUBLE_BAR;
|
| 288 |
|
|
"@" return AT;
|
| 289 |
|
|
[pP][rR][eE][fF][eE][tT][cC][hH] return PREFETCH;
|
| 290 |
|
|
[uU][nN][lL][iI][nN][kK] return UNLINK;
|
| 291 |
|
|
[lL][iI][nN][kK] return LINK;
|
| 292 |
|
|
[iI][dD][lL][eE] return IDLE;
|
| 293 |
|
|
[iI][fF][lL][uU][sS][hH] return IFLUSH;
|
| 294 |
|
|
[fF][lL][uU][sS][hH][iI][nN][vV] return FLUSHINV;
|
| 295 |
|
|
[fF][lL][uU][sS][hH] return FLUSH;
|
| 296 |
|
|
([0-9]+)|(0[xX][0-9a-fA-F]+)|([bhfodBHOFD]#[0-9a-fA-F]+)|(0.[0-9]+) {
|
| 297 |
|
|
yylval.value = parse_int (&yytext);
|
| 298 |
|
|
return NUMBER;
|
| 299 |
|
|
}
|
| 300 |
|
|
[A-Za-z_$.][A-Za-z0-9_$.]* {
|
| 301 |
|
|
yylval.symbol = symbol_find_or_make (yytext);
|
| 302 |
|
|
symbol_mark_used (yylval.symbol);
|
| 303 |
|
|
return SYMBOL;
|
| 304 |
|
|
}
|
| 305 |
|
|
[0-9][bfBF] {
|
| 306 |
|
|
char *name;
|
| 307 |
|
|
char *ref = strdup (yytext);
|
| 308 |
|
|
if (ref[1] == 'b' || ref[1] == 'B')
|
| 309 |
|
|
{
|
| 310 |
|
|
name = fb_label_name ((int) (ref[0] - '0'), 0);
|
| 311 |
|
|
yylval.symbol = symbol_find (name);
|
| 312 |
|
|
|
| 313 |
|
|
if ((yylval.symbol != NULL)
|
| 314 |
|
|
&& (S_IS_DEFINED (yylval.symbol)))
|
| 315 |
|
|
return SYMBOL;
|
| 316 |
|
|
as_bad ("backward reference to unknown label %d:",
|
| 317 |
|
|
(int) (ref[0] - '0'));
|
| 318 |
|
|
}
|
| 319 |
|
|
else if (ref[1] == 'f' || ref[1] == 'F')
|
| 320 |
|
|
{
|
| 321 |
|
|
/* Forward reference. Expect symbol to be undefined or
|
| 322 |
|
|
unknown. undefined: seen it before. unknown: never seen
|
| 323 |
|
|
it before.
|
| 324 |
|
|
|
| 325 |
|
|
Construct a local label name, then an undefined symbol.
|
| 326 |
|
|
Just return it as never seen before. */
|
| 327 |
|
|
|
| 328 |
|
|
name = fb_label_name ((int) (ref[0] - '0'), 1);
|
| 329 |
|
|
yylval.symbol = symbol_find_or_make (name);
|
| 330 |
|
|
/* We have no need to check symbol properties. */
|
| 331 |
|
|
return SYMBOL;
|
| 332 |
|
|
}
|
| 333 |
|
|
}
|
| 334 |
|
|
[ \t\n] ;
|
| 335 |
|
|
"/*".*"*/" ;
|
| 336 |
|
|
. return yytext[0];
|
| 337 |
|
|
%%
|
| 338 |
|
|
static long parse_int (char **end)
|
| 339 |
|
|
{
|
| 340 |
|
|
char fmt = '\0';
|
| 341 |
|
|
int not_done = 1;
|
| 342 |
|
|
int shiftvalue = 0;
|
| 343 |
|
|
char * char_bag;
|
| 344 |
|
|
long value = 0;
|
| 345 |
|
|
char c;
|
| 346 |
|
|
char *arg = *end;
|
| 347 |
|
|
|
| 348 |
|
|
while (*arg && *arg == ' ')
|
| 349 |
|
|
arg++;
|
| 350 |
|
|
|
| 351 |
|
|
switch (*arg)
|
| 352 |
|
|
{
|
| 353 |
|
|
case '1':
|
| 354 |
|
|
case '2':
|
| 355 |
|
|
case '3':
|
| 356 |
|
|
case '4':
|
| 357 |
|
|
case '5':
|
| 358 |
|
|
case '6':
|
| 359 |
|
|
case '7':
|
| 360 |
|
|
case '8':
|
| 361 |
|
|
case '9':
|
| 362 |
|
|
fmt = 'd';
|
| 363 |
|
|
break;
|
| 364 |
|
|
|
| 365 |
|
|
case '0': /* Accept different formated integers hex octal and binary. */
|
| 366 |
|
|
{
|
| 367 |
|
|
c = *++arg;
|
| 368 |
|
|
arg++;
|
| 369 |
|
|
if (c == 'x' || c == 'X') /* Hex input. */
|
| 370 |
|
|
fmt = 'h';
|
| 371 |
|
|
else if (c == 'b' || c == 'B')
|
| 372 |
|
|
fmt = 'b';
|
| 373 |
|
|
else if (c == '.')
|
| 374 |
|
|
fmt = 'f';
|
| 375 |
|
|
else
|
| 376 |
|
|
{ /* Octal. */
|
| 377 |
|
|
arg--;
|
| 378 |
|
|
fmt = 'o';
|
| 379 |
|
|
}
|
| 380 |
|
|
break;
|
| 381 |
|
|
}
|
| 382 |
|
|
|
| 383 |
|
|
case 'd':
|
| 384 |
|
|
case 'D':
|
| 385 |
|
|
case 'h':
|
| 386 |
|
|
case 'H':
|
| 387 |
|
|
case 'o':
|
| 388 |
|
|
case 'O':
|
| 389 |
|
|
case 'b':
|
| 390 |
|
|
case 'B':
|
| 391 |
|
|
case 'f':
|
| 392 |
|
|
case 'F':
|
| 393 |
|
|
{
|
| 394 |
|
|
fmt = *arg++;
|
| 395 |
|
|
if (*arg == '#')
|
| 396 |
|
|
arg++;
|
| 397 |
|
|
}
|
| 398 |
|
|
}
|
| 399 |
|
|
|
| 400 |
|
|
switch (fmt)
|
| 401 |
|
|
{
|
| 402 |
|
|
case 'h':
|
| 403 |
|
|
case 'H':
|
| 404 |
|
|
shiftvalue = 4;
|
| 405 |
|
|
char_bag = "0123456789ABCDEFabcdef";
|
| 406 |
|
|
break;
|
| 407 |
|
|
|
| 408 |
|
|
case 'o':
|
| 409 |
|
|
case 'O':
|
| 410 |
|
|
shiftvalue = 3;
|
| 411 |
|
|
char_bag = "01234567";
|
| 412 |
|
|
break;
|
| 413 |
|
|
|
| 414 |
|
|
case 'b':
|
| 415 |
|
|
case 'B':
|
| 416 |
|
|
shiftvalue = 1;
|
| 417 |
|
|
char_bag = "01";
|
| 418 |
|
|
break;
|
| 419 |
|
|
|
| 420 |
|
|
/* The assembler allows for fractional constants to be created
|
| 421 |
|
|
by either the 0.xxxx or the f#xxxx format
|
| 422 |
|
|
|
| 423 |
|
|
i.e. 0.5 would result in 0x4000
|
| 424 |
|
|
|
| 425 |
|
|
note .5 would result in the identifier .5.
|
| 426 |
|
|
|
| 427 |
|
|
The assembler converts to fractional format 1.15 by the simple rule:
|
| 428 |
|
|
|
| 429 |
|
|
value = (short) (finput * (1 << 15)). */
|
| 430 |
|
|
|
| 431 |
|
|
case 'f':
|
| 432 |
|
|
case 'F':
|
| 433 |
|
|
{
|
| 434 |
|
|
float fval = 0.0;
|
| 435 |
|
|
float pos = 10.0;
|
| 436 |
|
|
while (1)
|
| 437 |
|
|
{
|
| 438 |
|
|
int c;
|
| 439 |
|
|
c = *arg++;
|
| 440 |
|
|
|
| 441 |
|
|
if (c >= '0' && c <= '9')
|
| 442 |
|
|
{
|
| 443 |
|
|
float digit = (c - '0') / pos;
|
| 444 |
|
|
fval = fval + digit;
|
| 445 |
|
|
pos = pos * 10.0;
|
| 446 |
|
|
}
|
| 447 |
|
|
else
|
| 448 |
|
|
{
|
| 449 |
|
|
*--arg = c;
|
| 450 |
|
|
value = (short) (fval * (1 << 15));
|
| 451 |
|
|
break;
|
| 452 |
|
|
}
|
| 453 |
|
|
}
|
| 454 |
|
|
*end = arg+1;
|
| 455 |
|
|
return value;
|
| 456 |
|
|
}
|
| 457 |
|
|
|
| 458 |
|
|
case 'd':
|
| 459 |
|
|
case 'D':
|
| 460 |
|
|
default:
|
| 461 |
|
|
{
|
| 462 |
|
|
while (1)
|
| 463 |
|
|
{
|
| 464 |
|
|
int c;
|
| 465 |
|
|
c = *arg++;
|
| 466 |
|
|
if (c >= '0' && c <= '9')
|
| 467 |
|
|
value = (value * 10) + (c - '0');
|
| 468 |
|
|
else
|
| 469 |
|
|
{
|
| 470 |
|
|
/* Constants that are suffixed with k|K are multiplied by 1024
|
| 471 |
|
|
This suffix is only allowed on decimal constants. */
|
| 472 |
|
|
if (c == 'k' || c == 'K')
|
| 473 |
|
|
value *= 1024;
|
| 474 |
|
|
else
|
| 475 |
|
|
*--arg = c;
|
| 476 |
|
|
break;
|
| 477 |
|
|
}
|
| 478 |
|
|
}
|
| 479 |
|
|
*end = arg+1;
|
| 480 |
|
|
return value;
|
| 481 |
|
|
}
|
| 482 |
|
|
}
|
| 483 |
|
|
|
| 484 |
|
|
while (not_done)
|
| 485 |
|
|
{
|
| 486 |
|
|
char c;
|
| 487 |
|
|
c = *arg++;
|
| 488 |
|
|
if (c == 0 || !index (char_bag, c))
|
| 489 |
|
|
{
|
| 490 |
|
|
not_done = 0;
|
| 491 |
|
|
*--arg = c;
|
| 492 |
|
|
}
|
| 493 |
|
|
else
|
| 494 |
|
|
{
|
| 495 |
|
|
if (c >= 'a' && c <= 'z')
|
| 496 |
|
|
c = c - ('a' - '9') + 1;
|
| 497 |
|
|
else if (c >= 'A' && c <= 'Z')
|
| 498 |
|
|
c = c - ('A' - '9') + 1;
|
| 499 |
|
|
|
| 500 |
|
|
c -= '0';
|
| 501 |
|
|
value = (value << shiftvalue) + c;
|
| 502 |
|
|
}
|
| 503 |
|
|
}
|
| 504 |
|
|
*end = arg+1;
|
| 505 |
|
|
return value;
|
| 506 |
|
|
}
|
| 507 |
|
|
|
| 508 |
|
|
|
| 509 |
|
|
static int parse_reg (Register *r, int cl, char *rt)
|
| 510 |
|
|
{
|
| 511 |
|
|
r->regno = cl | (rt[1] - '0');
|
| 512 |
|
|
return REG;
|
| 513 |
|
|
}
|
| 514 |
|
|
|
| 515 |
|
|
static int parse_halfreg (Register *r, int cl, char *rt)
|
| 516 |
|
|
{
|
| 517 |
|
|
r->regno = cl | (rt[1] - '0');
|
| 518 |
|
|
|
| 519 |
|
|
switch (rt[3])
|
| 520 |
|
|
{
|
| 521 |
|
|
case 'b':
|
| 522 |
|
|
case 'B':
|
| 523 |
|
|
return BYTE_DREG;
|
| 524 |
|
|
|
| 525 |
|
|
case 'l':
|
| 526 |
|
|
case 'L':
|
| 527 |
|
|
break;
|
| 528 |
|
|
|
| 529 |
|
|
case 'h':
|
| 530 |
|
|
case 'H':
|
| 531 |
|
|
r->regno |= F_REG_HIGH;
|
| 532 |
|
|
break;
|
| 533 |
|
|
}
|
| 534 |
|
|
|
| 535 |
|
|
return HALF_REG;
|
| 536 |
|
|
}
|
| 537 |
|
|
|
| 538 |
|
|
/* Our start state is KEYWORD as we have
|
| 539 |
|
|
command keywords such as PREFETCH. */
|
| 540 |
|
|
|
| 541 |
|
|
void
|
| 542 |
|
|
set_start_state (void)
|
| 543 |
|
|
{
|
| 544 |
|
|
BEGIN KEYWORD;
|
| 545 |
|
|
}
|
| 546 |
|
|
|
| 547 |
|
|
|
| 548 |
|
|
#ifndef yywrap
|
| 549 |
|
|
int
|
| 550 |
|
|
yywrap ()
|
| 551 |
|
|
{
|
| 552 |
|
|
return 1;
|
| 553 |
|
|
}
|
| 554 |
|
|
#endif
|
