diff options
Diffstat (limited to 'assembler')
| -rw-r--r-- | assembler/lex.l | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/assembler/lex.l b/assembler/lex.l index 81a52baf..1ba576bf 100644 --- a/assembler/lex.l +++ b/assembler/lex.l @@ -24,6 +24,8 @@ int yycolumn = 1; %x CHANNEL %x LINENUMBER %x FILENAME +%x REG +%x DOTSEL %% \/\/.*[\r\n] { yycolumn = 1; } /* eat up single-line comments */ @@ -247,8 +249,46 @@ yylval.integer = BRW_CHANNEL_W; [gr][0-9]+ { yylval.integer = atoi(yytext + 1); + BEGIN(REG); return GENREG; } +<REG>"<" { return LANGLE; } +<REG>[0-9][0-9]* { + yylval.integer = strtoul(yytext, NULL, 10); + return INTEGER; +} +<REG>">" { return RANGLE; } + +<REG>"," { return COMMA; } +<REG>"." { BEGIN(DOTSEL); return DOT; } +<REG>";" { return SEMICOLON; } + +<DOTSEL>"x" { + yylval.integer = BRW_CHANNEL_X; + return X; +} +<DOTSEL>"y" { + yylval.integer = BRW_CHANNEL_Y; + return Y; +} +<DOTSEL>"z" { + yylval.integer = BRW_CHANNEL_Z; + return Z; +} +<DOTSEL>"w" { + yylval.integer = BRW_CHANNEL_W; + return W; +} +<DOTSEL>[0-9][0-9]* { + yylval.integer = strtoul(yytext, NULL, 10); + BEGIN(REG); + return INTEGER; +} +<DOTSEL>. { + yyless(0); + BEGIN(INITIAL); +} + [gr] { return GENREGFILE; } @@ -296,6 +336,11 @@ yylval.integer = BRW_CHANNEL_W; return LMS; } +<REG>. { + yyless(0); + BEGIN(INITIAL); +} + /* * Lexing of register types should probably require the ":" symbol specified * in the BNF of the assembly, but our existing source didn't use that syntax. |