mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-27 04:52:05 +08:00
556 lines
19 KiB
Plaintext
556 lines
19 KiB
Plaintext
/* bfin-lex.l ADI Blackfin lexer
|
|
Copyright 2005, 2006, 2007, 2008
|
|
Free Software Foundation, Inc.
|
|
|
|
This file is part of GAS, the GNU Assembler.
|
|
|
|
GAS is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3, or (at your option)
|
|
any later version.
|
|
|
|
GAS is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GAS; see the file COPYING. If not, write to the Free
|
|
Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
|
|
02110-1301, USA. */
|
|
%{
|
|
|
|
#include "as.h"
|
|
#include "bfin-defs.h"
|
|
#include "bfin-parse.h"
|
|
|
|
static long parse_int (char **end);
|
|
static int parse_halfreg (Register *r, int cl, char *hr);
|
|
static int parse_reg (Register *r, int type, char *rt);
|
|
int yylex (void);
|
|
|
|
#define _REG yylval.reg
|
|
|
|
|
|
%}
|
|
|
|
/* Define Start States ... Actually we will use exclusion.
|
|
If no start state is specified it should match any state
|
|
and <INITIAL> would match some keyword rules only with
|
|
initial. */
|
|
%s KEYWORD
|
|
|
|
%%
|
|
[sS][fF][tT][rR][eE][sS][eE][tT] _REG.regno = REG_sftreset; return REG;
|
|
[oO][mM][oO][dD][eE] _REG.regno = REG_omode; return REG;
|
|
[iI][dD][lL][eE]_[rR][eE][qQ] _REG.regno = REG_idle_req; return REG;
|
|
[hH][wW][eE][rR][rR][cC][aA][uU][sS][eE] _REG.regno = REG_hwerrcause; return REG;
|
|
[eE][xX][cC][aA][uU][sS][eE] _REG.regno = REG_excause; return REG;
|
|
[eE][mM][uU][cC][aA][uU][sS][eE] _REG.regno = REG_emucause; return REG;
|
|
[zZ] return Z;
|
|
[xX] return X;
|
|
[wW]32 yylval.value = M_W32; return MMOD;
|
|
[wW] return W;
|
|
[vV][iI][tT]_[mM][aA][xX] return VIT_MAX;
|
|
[vV] return V; /* Special: V is a statflag and a modifier. */
|
|
[uU][sS][pP] _REG.regno = REG_USP; return REG;
|
|
[tT][lL] return TL;
|
|
[tT][hH] return TH;
|
|
[tT][fF][uU] yylval.value = M_TFU; return MMOD;
|
|
[tT][eE][sS][tT][sS][eE][tT] return TESTSET;
|
|
[tT] yylval.value = M_T; return MMOD;
|
|
[sS] return S;
|
|
[sS][yY][sS][cC][fF][gG] _REG.regno = REG_SYSCFG; return REG;
|
|
[sS][tT][iI] return STI;
|
|
[sS][sS][yY][nN][cC] return SSYNC;
|
|
[sS][pP]"."[lL] _REG.regno = REG_SP; _REG.flags = F_REG_LOW; return HALF_REG;
|
|
[sS][pP]"."[hH] _REG.regno = REG_SP; _REG.flags = F_REG_HIGH; return HALF_REG;
|
|
[sS][pP] _REG.regno = REG_SP; return REG;
|
|
[sS][iI][gG][nN][bB][iI][tT][sS] return SIGNBITS;
|
|
[sS][iI][gG][nN] return SIGN;
|
|
[sS][eE][qQ][sS][tT][aA][tT] _REG.regno = REG_SEQSTAT; return REG;
|
|
[sS][eE][aA][rR][cC][hH] return SEARCH;
|
|
[sS][hH][iI][fF][tT] return SHIFT;
|
|
[sS][cC][oO] return SCO;
|
|
|
|
[sS][aA][aA] return SAA;
|
|
[sS]2[rR][nN][dD] yylval.value = M_S2RND; return MMOD;
|
|
[rR][tT][xX] return RTX;
|
|
[rR][tT][sS] return RTS;
|
|
[rR][tT][nN] return RTN;
|
|
[rR][tT][iI] return RTI;
|
|
[rR][tT][eE] return RTE;
|
|
[rR][oO][tT] return ROT;
|
|
[rR][nN][dD]20 return RND20;
|
|
[rR][nN][dD]12 return RND12;
|
|
[rR][nN][dD][lL] return RNDL;
|
|
[rR][nN][dD][hH] return RNDH;
|
|
[rR][nN][dD] return RND;
|
|
|
|
[rR][0-7]"."[lLhHbB] return parse_halfreg(&yylval.reg, T_REG_R, yytext);
|
|
|
|
[rR][eE][tT][sS] _REG.regno = REG_RETS; return REG;
|
|
[rR][eE][tT][iI] _REG.regno = REG_RETI; return REG;
|
|
[rR][eE][tT][xX] _REG.regno = REG_RETX; return REG;
|
|
[rR][eE][tT][nN] _REG.regno = REG_RETN; return REG;
|
|
[rR][eE][tT][eE] _REG.regno = REG_RETE; return REG;
|
|
[eE][mM][uU][dD][aA][tT] _REG.regno = REG_EMUDAT; return REG;
|
|
[rR][aA][iI][sS][eE] return RAISE;
|
|
|
|
[rR][0-7] return parse_reg (&yylval.reg, T_REG_R, yytext);
|
|
|
|
[rR] return R;
|
|
[pP][rR][nN][tT] return PRNT;
|
|
[pP][cC] return PC;
|
|
[pP][aA][cC][kK] return PACK;
|
|
|
|
[pP][0-5]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_P, yytext);
|
|
[pP][0-5] return parse_reg (&yylval.reg, T_REG_P, yytext);
|
|
|
|
[oO][uU][tT][cC] return OUTC;
|
|
[oO][nN][eE][sS] return ONES;
|
|
|
|
[nN][oO][tT] return NOT;
|
|
[nN][oO][pP] return NOP;
|
|
[mM][nN][oO][pP] return MNOP;
|
|
[nN][sS] return NS;
|
|
|
|
|
|
[mM][iI][nN] return MIN;
|
|
[mM][aA][xX] return MAX;
|
|
|
|
[mM][0-3]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_M, yytext);
|
|
[mM][0-3] return parse_reg (&yylval.reg, T_REG_M, yytext);
|
|
|
|
[mM] return M;
|
|
[lL][tT] return LT;
|
|
[lL][sS][hH][iI][fF][tT] return LSHIFT;
|
|
[lL][sS][eE][tT][uU][pP] return LSETUP;
|
|
[lL][oO][oO][pP] return LOOP;
|
|
[lL][oO][oO][pP]_[bB][eE][gG][iI][nN] return LOOP_BEGIN;
|
|
[lL][oO][oO][pP]_[eE][nN][dD] return LOOP_END;
|
|
|
|
[lL][eE] return LE;
|
|
[lL][cC]0 _REG.regno = REG_LC0; return REG;
|
|
[lL][tT]0 _REG.regno = REG_LT0; return REG;
|
|
[lL][bB]0 _REG.regno = REG_LB0; return REG;
|
|
[lL][cC]1 _REG.regno = REG_LC1; return REG;
|
|
[lL][tT]1 _REG.regno = REG_LT1; return REG;
|
|
[lL][bB]1 _REG.regno = REG_LB1; return REG;
|
|
|
|
[lL][0-3]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_L, yytext);
|
|
[lL][0-3] return parse_reg (&yylval.reg, T_REG_L, yytext);
|
|
[lL][oO] return LO;
|
|
[jJ][uU][mM][pP]"."[sS] { BEGIN 0; return JUMP_DOT_S;}
|
|
[jJ][uU][mM][pP]"."[lL] { BEGIN 0; return JUMP_DOT_L;}
|
|
[jJ][uU][mM][pP] { BEGIN 0; return JUMP;}
|
|
[jJ][uU][mM][pP]"."[xX] { BEGIN 0; return JUMP_DOT_L; }
|
|
[iI][uU] yylval.value = M_IU; return MMOD;
|
|
[iI][sS][sS]2 yylval.value = M_ISS2; return MMOD;
|
|
[iI][sS] yylval.value = M_IS; return MMOD;
|
|
[iI][hH] yylval.value = M_IH; return MMOD;
|
|
[iI][fF] return IF;
|
|
[iI][0-3]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_I, yytext);
|
|
[iI][0-3] return parse_reg (&yylval.reg, T_REG_I, yytext);
|
|
[hH][lL][tT] return HLT;
|
|
[hH][iI] return HI;
|
|
[gG][tT] return GT;
|
|
[gG][eE] return GE;
|
|
[fF][uU] yylval.value = M_FU; return MMOD;
|
|
[fF][pP] _REG.regno = REG_FP; return REG;
|
|
[fF][pP]"."[lL] _REG.regno = REG_FP; _REG.flags = F_REG_LOW; return HALF_REG;
|
|
[fF][pP]"."[hH] _REG.regno = REG_FP; _REG.flags = F_REG_HIGH; return HALF_REG;
|
|
|
|
[eE][xX][tT][rR][aA][cC][tT] return EXTRACT;
|
|
[eE][xX][pP][aA][dD][jJ] return EXPADJ;
|
|
[eE][xX][cC][pP][tT] return EXCPT;
|
|
[eE][mM][uU][eE][xX][cC][pP][tT] return EMUEXCPT;
|
|
[dD][iI][vV][sS] return DIVS;
|
|
[dD][iI][vV][qQ] return DIVQ;
|
|
[dD][iI][sS][aA][lL][gG][nN][eE][xX][cC][pP][tT] return DISALGNEXCPT;
|
|
[dD][eE][pP][oO][sS][iI][tT] return DEPOSIT;
|
|
[dD][bB][gG][hH][aA][lL][tT] return DBGHALT;
|
|
[dD][bB][gG][cC][mM][pP][lL][xX] return DBGCMPLX;
|
|
[dD][bB][gG][aA][lL] return DBGAL;
|
|
[dD][bB][gG][aA][hH] return DBGAH;
|
|
[dD][bB][gG][aA] return DBGA;
|
|
[dD][bB][gG] return DBG;
|
|
[cC][yY][cC][lL][eE][sS]2 { _REG.regno = REG_CYCLES2; return REG; }
|
|
[cC][yY][cC][lL][eE][sS] { _REG.regno = REG_CYCLES; return REG; }
|
|
[cC][sS][yY][nN][cC] return CSYNC;
|
|
[cC][oO] return CO;
|
|
[cC][lL][iI] return CLI;
|
|
|
|
[cC][cC] _REG.regno = REG_CC; return CCREG;
|
|
[cC][aA][lL][lL]"."[xX] { BEGIN 0; return CALL;}
|
|
[cC][aA][lL][lL] { BEGIN 0; return CALL;}
|
|
[bB][yY][tT][eE][uU][nN][pP][aA][cC][kK] return BYTEUNPACK;
|
|
[bB][yY][tT][eE][pP][aA][cC][kK] return BYTEPACK;
|
|
[bB][yY][tT][eE][oO][pP]16[mM] return BYTEOP16M;
|
|
[bB][yY][tT][eE][oO][pP]16[pP] return BYTEOP16P;
|
|
[bB][yY][tT][eE][oO][pP]3[pP] return BYTEOP3P;
|
|
[bB][yY][tT][eE][oO][pP]2[mM] return BYTEOP2M;
|
|
[bB][yY][tT][eE][oO][pP]2[pP] return BYTEOP2P;
|
|
[bB][yY][tT][eE][oO][pP]1[pP] return BYTEOP1P;
|
|
[bB][yY] return BY;
|
|
[bB][xX][oO][rR][sS][hH][iI][fF][tT] return BXORSHIFT;
|
|
[bB][xX][oO][rR] return BXOR;
|
|
|
|
[bB][rR][eE][vV] return BREV;
|
|
[bB][pP] return BP;
|
|
[bB][iI][tT][tT][sS][tT] return BITTST;
|
|
[bB][iI][tT][tT][gG][lL] return BITTGL;
|
|
[bB][iI][tT][sS][eE][tT] return BITSET;
|
|
[bB][iI][tT][mM][uU][xX] return BITMUX;
|
|
[bB][iI][tT][cC][lL][rR] return BITCLR;
|
|
[bB][0-3]"."[lLhH] return parse_halfreg (&yylval.reg, T_REG_B, yytext);
|
|
[bB][0-3] return parse_reg (&yylval.reg, T_REG_B, yytext);
|
|
[bB] return B;
|
|
[aA][zZ] _REG.regno = S_AZ; return STATUS_REG;
|
|
[aA][nN] _REG.regno = S_AN; return STATUS_REG;
|
|
[aA][qQ] _REG.regno = S_AQ; return STATUS_REG;
|
|
[aA][cC]0 _REG.regno = S_AC0; return STATUS_REG;
|
|
[aA][cC]1 _REG.regno = S_AC1; return STATUS_REG;
|
|
[aA][vV]0 _REG.regno = S_AV0; return STATUS_REG;
|
|
[aA][vV]0[sS] _REG.regno = S_AV0S; return STATUS_REG;
|
|
[aA][vV]1 _REG.regno = S_AV1; return STATUS_REG;
|
|
[aA][vV]1[sS] _REG.regno = S_AV1S; return STATUS_REG;
|
|
[vV][sS] _REG.regno = S_VS; return STATUS_REG;
|
|
|
|
|
|
[aA][sS][tT][aA][tT] _REG.regno = REG_ASTAT; return REG;
|
|
[aA][sS][hH][iI][fF][tT] return ASHIFT;
|
|
[aA][sS][lL] return ASL;
|
|
[aA][sS][rR] return ASR;
|
|
[aA][lL][iI][gG][nN]8 return ALIGN8;
|
|
[aA][lL][iI][gG][nN]16 return ALIGN16;
|
|
[aA][lL][iI][gG][nN]24 return ALIGN24;
|
|
[aA]1"."[lL] return A_ONE_DOT_L;
|
|
[aA]0"."[lL] return A_ZERO_DOT_L;
|
|
[aA]1"."[hH] return A_ONE_DOT_H;
|
|
[aA]0"."[hH] return A_ZERO_DOT_H;
|
|
[aA][bB][sS] return ABS;
|
|
abort return ABORT;
|
|
[aA]1"."[xX] _REG.regno = REG_A1x; return REG;
|
|
[aA]1"."[wW] _REG.regno = REG_A1w; return REG;
|
|
[aA]1 _REG.regno = REG_A1; return REG_A_DOUBLE_ONE;
|
|
[aA]0"."[xX] _REG.regno = REG_A0x; return REG;
|
|
[aA]0"."[wW] _REG.regno = REG_A0w; return REG;
|
|
[aA]0 _REG.regno = REG_A0; return REG_A_DOUBLE_ZERO;
|
|
[Gg][Oo][Tt] return GOT;
|
|
[Gg][Oo][Tt]"17"[Mm]"4" return GOT17M4;
|
|
[Ff][Uu][Nn][Cc][Dd][Ee][Ss][Cc]"_"[Gg][Oo][Tt]"17"[Mm]"4" return FUNCDESC_GOT17M4;
|
|
[Pp][Ll][Tt][Pp][Cc] return PLTPC;
|
|
|
|
|
|
"~" return TILDA;
|
|
"|=" return _BAR_ASSIGN;
|
|
"|" return BAR;
|
|
"^=" return _CARET_ASSIGN;
|
|
"^" return CARET;
|
|
"]" return RBRACK;
|
|
"[" return LBRACK;
|
|
">>>=" return _GREATER_GREATER_GREATER_THAN_ASSIGN;
|
|
">>=" return _GREATER_GREATER_ASSIGN;
|
|
">>>" return _GREATER_GREATER_GREATER;
|
|
">>" return GREATER_GREATER;
|
|
"==" return _ASSIGN_ASSIGN;
|
|
"=" return ASSIGN;
|
|
"<=" return _LESS_THAN_ASSIGN;
|
|
"<<=" return _LESS_LESS_ASSIGN;
|
|
"<<" return LESS_LESS;
|
|
"<" return LESS_THAN;
|
|
"(" return LPAREN;
|
|
")" return RPAREN;
|
|
":" return COLON;
|
|
"/" return SLASH;
|
|
"-=" return _MINUS_ASSIGN;
|
|
"+|+" return _PLUS_BAR_PLUS;
|
|
"-|+" return _MINUS_BAR_PLUS;
|
|
"+|-" return _PLUS_BAR_MINUS;
|
|
"-|-" return _MINUS_BAR_MINUS;
|
|
"--" return _MINUS_MINUS;
|
|
"-" return MINUS;
|
|
"," return COMMA;
|
|
"+=" return _PLUS_ASSIGN;
|
|
"++" return _PLUS_PLUS;
|
|
"+" return PLUS;
|
|
"*=" return _STAR_ASSIGN;
|
|
"*" return STAR;
|
|
"&=" return _AMPERSAND_ASSIGN;
|
|
"&" return AMPERSAND;
|
|
"%" return PERCENT;
|
|
"!" return BANG;
|
|
";" return SEMICOLON;
|
|
"=!" return _ASSIGN_BANG;
|
|
"||" return DOUBLE_BAR;
|
|
"@" return AT;
|
|
<KEYWORD>[pP][rR][eE][fF][eE][tT][cC][hH] return PREFETCH;
|
|
<KEYWORD>[uU][nN][lL][iI][nN][kK] return UNLINK;
|
|
<KEYWORD>[lL][iI][nN][kK] return LINK;
|
|
<KEYWORD>[iI][dD][lL][eE] return IDLE;
|
|
<KEYWORD>[iI][fF][lL][uU][sS][hH] return IFLUSH;
|
|
<KEYWORD>[fF][lL][uU][sS][hH][iI][nN][vV] return FLUSHINV;
|
|
<KEYWORD>[fF][lL][uU][sS][hH] return FLUSH;
|
|
([0-9]+)|(0[xX][0-9a-fA-F]+)|([bhfodBHOFD]#[0-9a-fA-F]+)|(0"."[0-9]+) {
|
|
yylval.value = parse_int (&yytext);
|
|
return NUMBER;
|
|
}
|
|
[A-Za-z_$.][A-Za-z0-9_$.]* {
|
|
yylval.symbol = symbol_find_or_make (yytext);
|
|
symbol_mark_used (yylval.symbol);
|
|
return SYMBOL;
|
|
}
|
|
[0-9][bfBF] {
|
|
char *name;
|
|
char *ref = strdup (yytext);
|
|
if (ref[1] == 'b' || ref[1] == 'B')
|
|
{
|
|
name = fb_label_name ((int) (ref[0] - '0'), 0);
|
|
yylval.symbol = symbol_find (name);
|
|
|
|
if ((yylval.symbol != NULL)
|
|
&& (S_IS_DEFINED (yylval.symbol)))
|
|
return SYMBOL;
|
|
as_bad ("backward reference to unknown label %d:",
|
|
(int) (ref[0] - '0'));
|
|
}
|
|
else if (ref[1] == 'f' || ref[1] == 'F')
|
|
{
|
|
/* Forward reference. Expect symbol to be undefined or
|
|
unknown. undefined: seen it before. unknown: never seen
|
|
it before.
|
|
|
|
Construct a local label name, then an undefined symbol.
|
|
Just return it as never seen before. */
|
|
|
|
name = fb_label_name ((int) (ref[0] - '0'), 1);
|
|
yylval.symbol = symbol_find_or_make (name);
|
|
/* We have no need to check symbol properties. */
|
|
return SYMBOL;
|
|
}
|
|
}
|
|
[ \t\n] ;
|
|
"/*".*"*/" ;
|
|
. return yytext[0];
|
|
%%
|
|
static long parse_int (char **end)
|
|
{
|
|
char fmt = '\0';
|
|
int not_done = 1;
|
|
int shiftvalue = 0;
|
|
char * char_bag;
|
|
long value = 0;
|
|
char c;
|
|
char *arg = *end;
|
|
|
|
while (*arg && *arg == ' ')
|
|
arg++;
|
|
|
|
switch (*arg)
|
|
{
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
fmt = 'd';
|
|
break;
|
|
|
|
case '0': /* Accept different formated integers hex octal and binary. */
|
|
{
|
|
c = *++arg;
|
|
arg++;
|
|
if (c == 'x' || c == 'X') /* Hex input. */
|
|
fmt = 'h';
|
|
else if (c == 'b' || c == 'B')
|
|
fmt = 'b';
|
|
else if (c == '.')
|
|
fmt = 'f';
|
|
else
|
|
{ /* Octal. */
|
|
arg--;
|
|
fmt = 'o';
|
|
}
|
|
break;
|
|
}
|
|
|
|
case 'd':
|
|
case 'D':
|
|
case 'h':
|
|
case 'H':
|
|
case 'o':
|
|
case 'O':
|
|
case 'b':
|
|
case 'B':
|
|
case 'f':
|
|
case 'F':
|
|
{
|
|
fmt = *arg++;
|
|
if (*arg == '#')
|
|
arg++;
|
|
}
|
|
}
|
|
|
|
switch (fmt)
|
|
{
|
|
case 'h':
|
|
case 'H':
|
|
shiftvalue = 4;
|
|
char_bag = "0123456789ABCDEFabcdef";
|
|
break;
|
|
|
|
case 'o':
|
|
case 'O':
|
|
shiftvalue = 3;
|
|
char_bag = "01234567";
|
|
break;
|
|
|
|
case 'b':
|
|
case 'B':
|
|
shiftvalue = 1;
|
|
char_bag = "01";
|
|
break;
|
|
|
|
/* The assembler allows for fractional constants to be created
|
|
by either the 0.xxxx or the f#xxxx format
|
|
|
|
i.e. 0.5 would result in 0x4000
|
|
|
|
note .5 would result in the identifier .5.
|
|
|
|
The assembler converts to fractional format 1.15 by the simple rule:
|
|
|
|
value = (short) (finput * (1 << 15)). */
|
|
|
|
case 'f':
|
|
case 'F':
|
|
{
|
|
float fval = 0.0;
|
|
float pos = 10.0;
|
|
while (1)
|
|
{
|
|
int c;
|
|
c = *arg++;
|
|
|
|
if (c >= '0' && c <= '9')
|
|
{
|
|
float digit = (c - '0') / pos;
|
|
fval = fval + digit;
|
|
pos = pos * 10.0;
|
|
}
|
|
else
|
|
{
|
|
*--arg = c;
|
|
value = (short) (fval * (1 << 15));
|
|
break;
|
|
}
|
|
}
|
|
*end = arg+1;
|
|
return value;
|
|
}
|
|
|
|
case 'd':
|
|
case 'D':
|
|
default:
|
|
{
|
|
while (1)
|
|
{
|
|
int c;
|
|
c = *arg++;
|
|
if (c >= '0' && c <= '9')
|
|
value = (value * 10) + (c - '0');
|
|
else
|
|
{
|
|
/* Constants that are suffixed with k|K are multiplied by 1024
|
|
This suffix is only allowed on decimal constants. */
|
|
if (c == 'k' || c == 'K')
|
|
value *= 1024;
|
|
else
|
|
*--arg = c;
|
|
break;
|
|
}
|
|
}
|
|
*end = arg+1;
|
|
return value;
|
|
}
|
|
}
|
|
|
|
while (not_done)
|
|
{
|
|
char c;
|
|
c = *arg++;
|
|
if (c == 0 || !index (char_bag, c))
|
|
{
|
|
not_done = 0;
|
|
*--arg = c;
|
|
}
|
|
else
|
|
{
|
|
if (c >= 'a' && c <= 'z')
|
|
c = c - ('a' - '9') + 1;
|
|
else if (c >= 'A' && c <= 'Z')
|
|
c = c - ('A' - '9') + 1;
|
|
|
|
c -= '0';
|
|
value = (value << shiftvalue) + c;
|
|
}
|
|
}
|
|
*end = arg+1;
|
|
return value;
|
|
}
|
|
|
|
|
|
static int parse_reg (Register *r, int cl, char *rt)
|
|
{
|
|
r->regno = cl | (rt[1] - '0');
|
|
r->flags = F_REG_NONE;
|
|
return REG;
|
|
}
|
|
|
|
static int parse_halfreg (Register *r, int cl, char *rt)
|
|
{
|
|
r->regno = cl | (rt[1] - '0');
|
|
|
|
switch (rt[3])
|
|
{
|
|
case 'b':
|
|
case 'B':
|
|
return BYTE_DREG;
|
|
|
|
case 'l':
|
|
case 'L':
|
|
r->flags = F_REG_LOW;
|
|
break;
|
|
|
|
case 'h':
|
|
case 'H':
|
|
r->flags = F_REG_HIGH;
|
|
break;
|
|
}
|
|
|
|
return HALF_REG;
|
|
}
|
|
|
|
/* Our start state is KEYWORD as we have
|
|
command keywords such as PREFETCH. */
|
|
|
|
void
|
|
set_start_state (void)
|
|
{
|
|
BEGIN KEYWORD;
|
|
}
|
|
|
|
|
|
#ifndef yywrap
|
|
int
|
|
yywrap ()
|
|
{
|
|
return 1;
|
|
}
|
|
#endif
|