Commit | Line | Data |
---|---|---|
07c1b327 | 1 | /* bfin-lex.l ADI Blackfin lexer |
62fb9fe1 | 2 | Copyright 2005, 2006, 2007, 2008, 2010 |
07c1b327 CM |
3 | Free Software Foundation, Inc. |
4 | ||
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 9 | the Free Software Foundation; either version 3, or (at your option) |
07c1b327 CM |
10 | any later version. |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
20 | 02110-1301, USA. */ | |
21 | %{ | |
22 | ||
ebd1c875 | 23 | #include "as.h" |
07c1b327 | 24 | #include "bfin-defs.h" |
9ba4c445 | 25 | #include "bfin-parse.h" |
07c1b327 CM |
26 | |
27 | static long parse_int (char **end); | |
28 | static int parse_halfreg (Register *r, int cl, char *hr); | |
29 | static int parse_reg (Register *r, int type, char *rt); | |
30 | int yylex (void); | |
31 | ||
32 | #define _REG yylval.reg | |
33 | ||
34 | ||
35 | %} | |
36 | ||
37 | /* Define Start States ... Actually we will use exclusion. | |
38 | If no start state is specified it should match any state | |
39 | and <INITIAL> would match some keyword rules only with | |
40 | initial. */ | |
41 | %s KEYWORD | |
65646555 | 42 | %s FLAGS |
07c1b327 CM |
43 | |
44 | %% | |
45 | [sS][fF][tT][rR][eE][sS][eE][tT] _REG.regno = REG_sftreset; return REG; | |
46 | [oO][mM][oO][dD][eE] _REG.regno = REG_omode; return REG; | |
47 | [iI][dD][lL][eE]_[rR][eE][qQ] _REG.regno = REG_idle_req; return REG; | |
48 | [hH][wW][eE][rR][rR][cC][aA][uU][sS][eE] _REG.regno = REG_hwerrcause; return REG; | |
49 | [eE][xX][cC][aA][uU][sS][eE] _REG.regno = REG_excause; return REG; | |
50 | [eE][mM][uU][cC][aA][uU][sS][eE] _REG.regno = REG_emucause; return REG; | |
65646555 MF |
51 | <FLAGS>[zZ] return Z; |
52 | <FLAGS>[xX] return X; | |
07c1b327 CM |
53 | [wW]32 yylval.value = M_W32; return MMOD; |
54 | [wW] return W; | |
55 | [vV][iI][tT]_[mM][aA][xX] return VIT_MAX; | |
56 | [vV] return V; /* Special: V is a statflag and a modifier. */ | |
57 | [uU][sS][pP] _REG.regno = REG_USP; return REG; | |
58 | [tT][lL] return TL; | |
59 | [tT][hH] return TH; | |
60 | [tT][fF][uU] yylval.value = M_TFU; return MMOD; | |
61 | [tT][eE][sS][tT][sS][eE][tT] return TESTSET; | |
65646555 MF |
62 | <FLAGS>[tT] yylval.value = M_T; return MMOD; |
63 | <FLAGS>[sS] return S; | |
07c1b327 CM |
64 | [sS][yY][sS][cC][fF][gG] _REG.regno = REG_SYSCFG; return REG; |
65 | [sS][tT][iI] return STI; | |
66 | [sS][sS][yY][nN][cC] return SSYNC; | |
f31bf2c6 JZ |
67 | [sS][pP]"."[lL] _REG.regno = REG_SP; _REG.flags = F_REG_LOW; return HALF_REG; |
68 | [sS][pP]"."[hH] _REG.regno = REG_SP; _REG.flags = F_REG_HIGH; return HALF_REG; | |
07c1b327 CM |
69 | [sS][pP] _REG.regno = REG_SP; return REG; |
70 | [sS][iI][gG][nN][bB][iI][tT][sS] return SIGNBITS; | |
71 | [sS][iI][gG][nN] return SIGN; | |
72 | [sS][eE][qQ][sS][tT][aA][tT] _REG.regno = REG_SEQSTAT; return REG; | |
73 | [sS][eE][aA][rR][cC][hH] return SEARCH; | |
74 | [sS][hH][iI][fF][tT] return SHIFT; | |
75 | [sS][cC][oO] return SCO; | |
76 | ||
77 | [sS][aA][aA] return SAA; | |
78 | [sS]2[rR][nN][dD] yylval.value = M_S2RND; return MMOD; | |
79 | [rR][tT][xX] return RTX; | |
80 | [rR][tT][sS] return RTS; | |
81 | [rR][tT][nN] return RTN; | |
82 | [rR][tT][iI] return RTI; | |
83 | [rR][tT][eE] return RTE; | |
84 | [rR][oO][tT] return ROT; | |
85 | [rR][nN][dD]20 return RND20; | |
86 | [rR][nN][dD]12 return RND12; | |
87 | [rR][nN][dD][lL] return RNDL; | |
88 | [rR][nN][dD][hH] return RNDH; | |
89 | [rR][nN][dD] return RND; | |
90 | ||
91 | [rR][0-7]"."[lLhHbB] return parse_halfreg(&yylval.reg, T_REG_R, yytext); | |
92 | ||
93 | [rR][eE][tT][sS] _REG.regno = REG_RETS; return REG; | |
94 | [rR][eE][tT][iI] _REG.regno = REG_RETI; return REG; | |
95 | [rR][eE][tT][xX] _REG.regno = REG_RETX; return REG; | |
96 | [rR][eE][tT][nN] _REG.regno = REG_RETN; return REG; | |
97 | [rR][eE][tT][eE] _REG.regno = REG_RETE; return REG; | |
98 | [eE][mM][uU][dD][aA][tT] _REG.regno = REG_EMUDAT; return REG; | |
99 | [rR][aA][iI][sS][eE] return RAISE; | |
100 | ||
101 | [rR][0-7] return parse_reg (&yylval.reg, T_REG_R, yytext); | |
102 | ||
103 | [rR] return R; | |
104 | [pP][rR][nN][tT] return PRNT; | |
105 | [pP][cC] return PC; | |
106 | [pP][aA][cC][kK] return PACK; | |
107 | ||
108 | [pP][0-5]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_P, yytext); | |
109 | [pP][0-5] return parse_reg (&yylval.reg, T_REG_P, yytext); | |
110 | ||
111 | [oO][uU][tT][cC] return OUTC; | |
112 | [oO][nN][eE][sS] return ONES; | |
113 | ||
114 | [nN][oO][tT] return NOT; | |
115 | [nN][oO][pP] return NOP; | |
116 | [mM][nN][oO][pP] return MNOP; | |
117 | [nN][sS] return NS; | |
118 | ||
119 | ||
120 | [mM][iI][nN] return MIN; | |
121 | [mM][aA][xX] return MAX; | |
122 | ||
123 | [mM][0-3]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_M, yytext); | |
124 | [mM][0-3] return parse_reg (&yylval.reg, T_REG_M, yytext); | |
125 | ||
65646555 | 126 | <FLAGS>[mM] return M; |
07c1b327 CM |
127 | [lL][tT] return LT; |
128 | [lL][sS][hH][iI][fF][tT] return LSHIFT; | |
129 | [lL][sS][eE][tT][uU][pP] return LSETUP; | |
130 | [lL][oO][oO][pP] return LOOP; | |
131 | [lL][oO][oO][pP]_[bB][eE][gG][iI][nN] return LOOP_BEGIN; | |
132 | [lL][oO][oO][pP]_[eE][nN][dD] return LOOP_END; | |
133 | ||
134 | [lL][eE] return LE; | |
135 | [lL][cC]0 _REG.regno = REG_LC0; return REG; | |
136 | [lL][tT]0 _REG.regno = REG_LT0; return REG; | |
137 | [lL][bB]0 _REG.regno = REG_LB0; return REG; | |
138 | [lL][cC]1 _REG.regno = REG_LC1; return REG; | |
139 | [lL][tT]1 _REG.regno = REG_LT1; return REG; | |
140 | [lL][bB]1 _REG.regno = REG_LB1; return REG; | |
141 | ||
142 | [lL][0-3]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_L, yytext); | |
143 | [lL][0-3] return parse_reg (&yylval.reg, T_REG_L, yytext); | |
144 | [lL][oO] return LO; | |
145 | [jJ][uU][mM][pP]"."[sS] { BEGIN 0; return JUMP_DOT_S;} | |
146 | [jJ][uU][mM][pP]"."[lL] { BEGIN 0; return JUMP_DOT_L;} | |
147 | [jJ][uU][mM][pP] { BEGIN 0; return JUMP;} | |
148 | [jJ][uU][mM][pP]"."[xX] { BEGIN 0; return JUMP_DOT_L; } | |
149 | [iI][uU] yylval.value = M_IU; return MMOD; | |
150 | [iI][sS][sS]2 yylval.value = M_ISS2; return MMOD; | |
151 | [iI][sS] yylval.value = M_IS; return MMOD; | |
152 | [iI][hH] yylval.value = M_IH; return MMOD; | |
153 | [iI][fF] return IF; | |
154 | [iI][0-3]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_I, yytext); | |
155 | [iI][0-3] return parse_reg (&yylval.reg, T_REG_I, yytext); | |
156 | [hH][lL][tT] return HLT; | |
157 | [hH][iI] return HI; | |
158 | [gG][tT] return GT; | |
159 | [gG][eE] return GE; | |
160 | [fF][uU] yylval.value = M_FU; return MMOD; | |
161 | [fF][pP] _REG.regno = REG_FP; return REG; | |
f31bf2c6 JZ |
162 | [fF][pP]"."[lL] _REG.regno = REG_FP; _REG.flags = F_REG_LOW; return HALF_REG; |
163 | [fF][pP]"."[hH] _REG.regno = REG_FP; _REG.flags = F_REG_HIGH; return HALF_REG; | |
07c1b327 CM |
164 | |
165 | [eE][xX][tT][rR][aA][cC][tT] return EXTRACT; | |
166 | [eE][xX][pP][aA][dD][jJ] return EXPADJ; | |
167 | [eE][xX][cC][pP][tT] return EXCPT; | |
168 | [eE][mM][uU][eE][xX][cC][pP][tT] return EMUEXCPT; | |
169 | [dD][iI][vV][sS] return DIVS; | |
170 | [dD][iI][vV][qQ] return DIVQ; | |
171 | [dD][iI][sS][aA][lL][gG][nN][eE][xX][cC][pP][tT] return DISALGNEXCPT; | |
172 | [dD][eE][pP][oO][sS][iI][tT] return DEPOSIT; | |
173 | [dD][bB][gG][hH][aA][lL][tT] return DBGHALT; | |
174 | [dD][bB][gG][cC][mM][pP][lL][xX] return DBGCMPLX; | |
175 | [dD][bB][gG][aA][lL] return DBGAL; | |
176 | [dD][bB][gG][aA][hH] return DBGAH; | |
177 | [dD][bB][gG][aA] return DBGA; | |
178 | [dD][bB][gG] return DBG; | |
179 | [cC][yY][cC][lL][eE][sS]2 { _REG.regno = REG_CYCLES2; return REG; } | |
180 | [cC][yY][cC][lL][eE][sS] { _REG.regno = REG_CYCLES; return REG; } | |
181 | [cC][sS][yY][nN][cC] return CSYNC; | |
182 | [cC][oO] return CO; | |
183 | [cC][lL][iI] return CLI; | |
184 | ||
185 | [cC][cC] _REG.regno = REG_CC; return CCREG; | |
186 | [cC][aA][lL][lL]"."[xX] { BEGIN 0; return CALL;} | |
187 | [cC][aA][lL][lL] { BEGIN 0; return CALL;} | |
188 | [bB][yY][tT][eE][uU][nN][pP][aA][cC][kK] return BYTEUNPACK; | |
189 | [bB][yY][tT][eE][pP][aA][cC][kK] return BYTEPACK; | |
190 | [bB][yY][tT][eE][oO][pP]16[mM] return BYTEOP16M; | |
191 | [bB][yY][tT][eE][oO][pP]16[pP] return BYTEOP16P; | |
192 | [bB][yY][tT][eE][oO][pP]3[pP] return BYTEOP3P; | |
07c1b327 CM |
193 | [bB][yY][tT][eE][oO][pP]2[pP] return BYTEOP2P; |
194 | [bB][yY][tT][eE][oO][pP]1[pP] return BYTEOP1P; | |
195 | [bB][yY] return BY; | |
196 | [bB][xX][oO][rR][sS][hH][iI][fF][tT] return BXORSHIFT; | |
197 | [bB][xX][oO][rR] return BXOR; | |
198 | ||
199 | [bB][rR][eE][vV] return BREV; | |
200 | [bB][pP] return BP; | |
201 | [bB][iI][tT][tT][sS][tT] return BITTST; | |
202 | [bB][iI][tT][tT][gG][lL] return BITTGL; | |
203 | [bB][iI][tT][sS][eE][tT] return BITSET; | |
204 | [bB][iI][tT][mM][uU][xX] return BITMUX; | |
205 | [bB][iI][tT][cC][lL][rR] return BITCLR; | |
206 | [bB][0-3]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_B, yytext); | |
207 | [bB][0-3] return parse_reg (&yylval.reg, T_REG_B, yytext); | |
208 | [bB] return B; | |
209 | [aA][zZ] _REG.regno = S_AZ; return STATUS_REG; | |
210 | [aA][nN] _REG.regno = S_AN; return STATUS_REG; | |
22215ae0 MF |
211 | [aA][cC]0_[cC][oO][pP][yY] _REG.regno = S_AC0_COPY; return STATUS_REG; |
212 | [vV]_[cC][oO][pP][yY] _REG.regno = S_V_COPY; return STATUS_REG; | |
07c1b327 CM |
213 | [aA][qQ] _REG.regno = S_AQ; return STATUS_REG; |
214 | [aA][cC]0 _REG.regno = S_AC0; return STATUS_REG; | |
215 | [aA][cC]1 _REG.regno = S_AC1; return STATUS_REG; | |
216 | [aA][vV]0 _REG.regno = S_AV0; return STATUS_REG; | |
217 | [aA][vV]0[sS] _REG.regno = S_AV0S; return STATUS_REG; | |
218 | [aA][vV]1 _REG.regno = S_AV1; return STATUS_REG; | |
219 | [aA][vV]1[sS] _REG.regno = S_AV1S; return STATUS_REG; | |
07c1b327 | 220 | [vV][sS] _REG.regno = S_VS; return STATUS_REG; |
22215ae0 | 221 | [rR][nN][dD]_[mM][oO][dD] _REG.regno = S_RND_MOD; return STATUS_REG; |
07c1b327 CM |
222 | |
223 | ||
224 | [aA][sS][tT][aA][tT] _REG.regno = REG_ASTAT; return REG; | |
225 | [aA][sS][hH][iI][fF][tT] return ASHIFT; | |
226 | [aA][sS][lL] return ASL; | |
227 | [aA][sS][rR] return ASR; | |
228 | [aA][lL][iI][gG][nN]8 return ALIGN8; | |
229 | [aA][lL][iI][gG][nN]16 return ALIGN16; | |
230 | [aA][lL][iI][gG][nN]24 return ALIGN24; | |
231 | [aA]1"."[lL] return A_ONE_DOT_L; | |
232 | [aA]0"."[lL] return A_ZERO_DOT_L; | |
233 | [aA]1"."[hH] return A_ONE_DOT_H; | |
234 | [aA]0"."[hH] return A_ZERO_DOT_H; | |
235 | [aA][bB][sS] return ABS; | |
1b182c3c | 236 | [aA][bB][oO][rR][tT] return ABORT; |
07c1b327 CM |
237 | [aA]1"."[xX] _REG.regno = REG_A1x; return REG; |
238 | [aA]1"."[wW] _REG.regno = REG_A1w; return REG; | |
239 | [aA]1 _REG.regno = REG_A1; return REG_A_DOUBLE_ONE; | |
240 | [aA]0"."[xX] _REG.regno = REG_A0x; return REG; | |
241 | [aA]0"."[wW] _REG.regno = REG_A0w; return REG; | |
242 | [aA]0 _REG.regno = REG_A0; return REG_A_DOUBLE_ZERO; | |
243 | [Gg][Oo][Tt] return GOT; | |
1ac4baed BS |
244 | [Gg][Oo][Tt]"17"[Mm]"4" return GOT17M4; |
245 | [Ff][Uu][Nn][Cc][Dd][Ee][Ss][Cc]"_"[Gg][Oo][Tt]"17"[Mm]"4" return FUNCDESC_GOT17M4; | |
07c1b327 CM |
246 | [Pp][Ll][Tt][Pp][Cc] return PLTPC; |
247 | ||
248 | ||
249 | "~" return TILDA; | |
250 | "|=" return _BAR_ASSIGN; | |
251 | "|" return BAR; | |
252 | "^=" return _CARET_ASSIGN; | |
253 | "^" return CARET; | |
254 | "]" return RBRACK; | |
255 | "[" return LBRACK; | |
256 | ">>>=" return _GREATER_GREATER_GREATER_THAN_ASSIGN; | |
257 | ">>=" return _GREATER_GREATER_ASSIGN; | |
258 | ">>>" return _GREATER_GREATER_GREATER; | |
259 | ">>" return GREATER_GREATER; | |
260 | "==" return _ASSIGN_ASSIGN; | |
261 | "=" return ASSIGN; | |
262 | "<=" return _LESS_THAN_ASSIGN; | |
263 | "<<=" return _LESS_LESS_ASSIGN; | |
264 | "<<" return LESS_LESS; | |
265 | "<" return LESS_THAN; | |
65646555 MF |
266 | "(" BEGIN(FLAGS); return LPAREN; |
267 | ")" BEGIN(INITIAL); return RPAREN; | |
07c1b327 CM |
268 | ":" return COLON; |
269 | "/" return SLASH; | |
270 | "-=" return _MINUS_ASSIGN; | |
271 | "+|+" return _PLUS_BAR_PLUS; | |
272 | "-|+" return _MINUS_BAR_PLUS; | |
273 | "+|-" return _PLUS_BAR_MINUS; | |
274 | "-|-" return _MINUS_BAR_MINUS; | |
275 | "--" return _MINUS_MINUS; | |
276 | "-" return MINUS; | |
277 | "," return COMMA; | |
278 | "+=" return _PLUS_ASSIGN; | |
279 | "++" return _PLUS_PLUS; | |
280 | "+" return PLUS; | |
281 | "*=" return _STAR_ASSIGN; | |
282 | "*" return STAR; | |
283 | "&=" return _AMPERSAND_ASSIGN; | |
284 | "&" return AMPERSAND; | |
285 | "%" return PERCENT; | |
286 | "!" return BANG; | |
287 | ";" return SEMICOLON; | |
288 | "=!" return _ASSIGN_BANG; | |
289 | "||" return DOUBLE_BAR; | |
290 | "@" return AT; | |
291 | <KEYWORD>[pP][rR][eE][fF][eE][tT][cC][hH] return PREFETCH; | |
292 | <KEYWORD>[uU][nN][lL][iI][nN][kK] return UNLINK; | |
293 | <KEYWORD>[lL][iI][nN][kK] return LINK; | |
294 | <KEYWORD>[iI][dD][lL][eE] return IDLE; | |
295 | <KEYWORD>[iI][fF][lL][uU][sS][hH] return IFLUSH; | |
296 | <KEYWORD>[fF][lL][uU][sS][hH][iI][nN][vV] return FLUSHINV; | |
297 | <KEYWORD>[fF][lL][uU][sS][hH] return FLUSH; | |
fec82760 | 298 | ([0-9]+)|(0[xX][0-9a-fA-F]+)|([bhfodBHOFD]#[0-9a-fA-F]+)|(0"."[0-9]+) { |
07c1b327 CM |
299 | yylval.value = parse_int (&yytext); |
300 | return NUMBER; | |
301 | } | |
efda0242 | 302 | [[:alpha:]\x80-\xff_$.][[:alnum:]\x80-\xff_$.]* { |
07c1b327 CM |
303 | yylval.symbol = symbol_find_or_make (yytext); |
304 | symbol_mark_used (yylval.symbol); | |
ee9e7c78 | 305 | return SYMBOL; |
07c1b327 CM |
306 | } |
307 | [0-9][bfBF] { | |
308 | char *name; | |
309 | char *ref = strdup (yytext); | |
310 | if (ref[1] == 'b' || ref[1] == 'B') | |
311 | { | |
312 | name = fb_label_name ((int) (ref[0] - '0'), 0); | |
313 | yylval.symbol = symbol_find (name); | |
314 | ||
315 | if ((yylval.symbol != NULL) | |
316 | && (S_IS_DEFINED (yylval.symbol))) | |
317 | return SYMBOL; | |
ee9e7c78 MF |
318 | as_bad ("backward reference to unknown label %d:", |
319 | (int) (ref[0] - '0')); | |
07c1b327 CM |
320 | } |
321 | else if (ref[1] == 'f' || ref[1] == 'F') | |
322 | { | |
323 | /* Forward reference. Expect symbol to be undefined or | |
324 | unknown. undefined: seen it before. unknown: never seen | |
325 | it before. | |
326 | ||
327 | Construct a local label name, then an undefined symbol. | |
328 | Just return it as never seen before. */ | |
329 | ||
330 | name = fb_label_name ((int) (ref[0] - '0'), 1); | |
331 | yylval.symbol = symbol_find_or_make (name); | |
332 | /* We have no need to check symbol properties. */ | |
333 | return SYMBOL; | |
ee9e7c78 MF |
334 | } |
335 | } | |
07c1b327 CM |
336 | [ \t\n] ; |
337 | "/*".*"*/" ; | |
338 | . return yytext[0]; | |
339 | %% | |
340 | static long parse_int (char **end) | |
341 | { | |
342 | char fmt = '\0'; | |
343 | int not_done = 1; | |
344 | int shiftvalue = 0; | |
345 | char * char_bag; | |
346 | long value = 0; | |
07c1b327 CM |
347 | char *arg = *end; |
348 | ||
349 | while (*arg && *arg == ' ') | |
350 | arg++; | |
351 | ||
352 | switch (*arg) | |
353 | { | |
354 | case '1': | |
355 | case '2': | |
356 | case '3': | |
357 | case '4': | |
358 | case '5': | |
359 | case '6': | |
360 | case '7': | |
361 | case '8': | |
362 | case '9': | |
363 | fmt = 'd'; | |
364 | break; | |
365 | ||
366 | case '0': /* Accept different formated integers hex octal and binary. */ | |
367 | { | |
62fb9fe1 | 368 | char c = *++arg; |
07c1b327 CM |
369 | arg++; |
370 | if (c == 'x' || c == 'X') /* Hex input. */ | |
371 | fmt = 'h'; | |
372 | else if (c == 'b' || c == 'B') | |
373 | fmt = 'b'; | |
374 | else if (c == '.') | |
375 | fmt = 'f'; | |
376 | else | |
377 | { /* Octal. */ | |
378 | arg--; | |
379 | fmt = 'o'; | |
380 | } | |
381 | break; | |
382 | } | |
383 | ||
384 | case 'd': | |
385 | case 'D': | |
386 | case 'h': | |
387 | case 'H': | |
388 | case 'o': | |
389 | case 'O': | |
390 | case 'b': | |
391 | case 'B': | |
392 | case 'f': | |
393 | case 'F': | |
394 | { | |
395 | fmt = *arg++; | |
396 | if (*arg == '#') | |
397 | arg++; | |
398 | } | |
399 | } | |
400 | ||
401 | switch (fmt) | |
402 | { | |
403 | case 'h': | |
404 | case 'H': | |
405 | shiftvalue = 4; | |
406 | char_bag = "0123456789ABCDEFabcdef"; | |
407 | break; | |
408 | ||
409 | case 'o': | |
410 | case 'O': | |
411 | shiftvalue = 3; | |
412 | char_bag = "01234567"; | |
413 | break; | |
414 | ||
415 | case 'b': | |
416 | case 'B': | |
417 | shiftvalue = 1; | |
418 | char_bag = "01"; | |
419 | break; | |
420 | ||
421 | /* The assembler allows for fractional constants to be created | |
ee9e7c78 | 422 | by either the 0.xxxx or the f#xxxx format |
07c1b327 CM |
423 | |
424 | i.e. 0.5 would result in 0x4000 | |
425 | ||
426 | note .5 would result in the identifier .5. | |
427 | ||
428 | The assembler converts to fractional format 1.15 by the simple rule: | |
429 | ||
430 | value = (short) (finput * (1 << 15)). */ | |
431 | ||
432 | case 'f': | |
433 | case 'F': | |
434 | { | |
435 | float fval = 0.0; | |
436 | float pos = 10.0; | |
437 | while (1) | |
438 | { | |
439 | int c; | |
440 | c = *arg++; | |
441 | ||
442 | if (c >= '0' && c <= '9') | |
443 | { | |
444 | float digit = (c - '0') / pos; | |
445 | fval = fval + digit; | |
446 | pos = pos * 10.0; | |
447 | } | |
448 | else | |
449 | { | |
450 | *--arg = c; | |
451 | value = (short) (fval * (1 << 15)); | |
452 | break; | |
453 | } | |
454 | } | |
455 | *end = arg+1; | |
456 | return value; | |
457 | } | |
458 | ||
459 | case 'd': | |
460 | case 'D': | |
461 | default: | |
462 | { | |
463 | while (1) | |
464 | { | |
62fb9fe1 | 465 | char c; |
07c1b327 CM |
466 | c = *arg++; |
467 | if (c >= '0' && c <= '9') | |
468 | value = (value * 10) + (c - '0'); | |
469 | else | |
470 | { | |
471 | /* Constants that are suffixed with k|K are multiplied by 1024 | |
472 | This suffix is only allowed on decimal constants. */ | |
473 | if (c == 'k' || c == 'K') | |
474 | value *= 1024; | |
475 | else | |
476 | *--arg = c; | |
477 | break; | |
478 | } | |
479 | } | |
480 | *end = arg+1; | |
481 | return value; | |
482 | } | |
483 | } | |
484 | ||
485 | while (not_done) | |
486 | { | |
487 | char c; | |
488 | c = *arg++; | |
048e5b80 | 489 | if (c == 0 || !strchr (char_bag, c)) |
07c1b327 CM |
490 | { |
491 | not_done = 0; | |
492 | *--arg = c; | |
493 | } | |
494 | else | |
495 | { | |
496 | if (c >= 'a' && c <= 'z') | |
497 | c = c - ('a' - '9') + 1; | |
498 | else if (c >= 'A' && c <= 'Z') | |
499 | c = c - ('A' - '9') + 1; | |
500 | ||
501 | c -= '0'; | |
502 | value = (value << shiftvalue) + c; | |
503 | } | |
504 | } | |
505 | *end = arg+1; | |
506 | return value; | |
507 | } | |
508 | ||
509 | ||
510 | static int parse_reg (Register *r, int cl, char *rt) | |
511 | { | |
512 | r->regno = cl | (rt[1] - '0'); | |
f31bf2c6 | 513 | r->flags = F_REG_NONE; |
07c1b327 CM |
514 | return REG; |
515 | } | |
516 | ||
517 | static int parse_halfreg (Register *r, int cl, char *rt) | |
518 | { | |
519 | r->regno = cl | (rt[1] - '0'); | |
520 | ||
521 | switch (rt[3]) | |
522 | { | |
523 | case 'b': | |
524 | case 'B': | |
525 | return BYTE_DREG; | |
526 | ||
527 | case 'l': | |
528 | case 'L': | |
f31bf2c6 | 529 | r->flags = F_REG_LOW; |
07c1b327 CM |
530 | break; |
531 | ||
532 | case 'h': | |
533 | case 'H': | |
f31bf2c6 | 534 | r->flags = F_REG_HIGH; |
07c1b327 CM |
535 | break; |
536 | } | |
537 | ||
538 | return HALF_REG; | |
539 | } | |
540 | ||
541 | /* Our start state is KEYWORD as we have | |
542 | command keywords such as PREFETCH. */ | |
543 | ||
ee9e7c78 | 544 | void |
07c1b327 CM |
545 | set_start_state (void) |
546 | { | |
547 | BEGIN KEYWORD; | |
548 | } | |
549 | ||
550 | ||
551 | #ifndef yywrap | |
552 | int | |
553 | yywrap () | |
ee9e7c78 | 554 | { |
07c1b327 CM |
555 | return 1; |
556 | } | |
557 | #endif |