mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
284 lines
7.2 KiB
Plaintext
284 lines
7.2 KiB
Plaintext
%{
|
|
/*
|
|
* Lexical Analyzer for the Aic7xxx SCSI Host adapter sequencer assembler.
|
|
*
|
|
* Copyright (c) 1997-1998 Justin T. Gibbs.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification, immediately at the beginning of the file.
|
|
* 2. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sysexits.h>
|
|
#include <sys/queue.h>
|
|
|
|
#include "aicasm.h"
|
|
#include "aicasm_symbol.h"
|
|
#include "y.tab.h"
|
|
|
|
#define MAX_STR_CONST 256
|
|
char string_buf[MAX_STR_CONST];
|
|
char *string_buf_ptr;
|
|
int parren_count;
|
|
%}
|
|
|
|
PATH [-/A-Za-z0-9_.]*[./][-/A-Za-z0-9_.]*
|
|
WORD [A-Za-z_][-A-Za-z_0-9]*
|
|
SPACE [ \t]+
|
|
|
|
%x COMMENT
|
|
%x CEXPR
|
|
%x INCLUDE
|
|
|
|
%%
|
|
\n { ++yylineno; }
|
|
"/*" { BEGIN COMMENT; /* Enter comment eating state */ }
|
|
<COMMENT>"/*" { fprintf(stderr, "Warning! Comment within comment."); }
|
|
<COMMENT>\n { ++yylineno; }
|
|
<COMMENT>[^*/\n]* ;
|
|
<COMMENT>"*"+[^*/\n]* ;
|
|
<COMMENT>"/"+[^*/\n]* ;
|
|
<COMMENT>"*"+"/" { BEGIN INITIAL; }
|
|
if[ \t]*\( {
|
|
string_buf_ptr = string_buf;
|
|
parren_count = 1;
|
|
BEGIN CEXPR;
|
|
return T_IF;
|
|
}
|
|
<CEXPR>\( { *string_buf_ptr++ = '('; parren_count++; }
|
|
<CEXPR>\) {
|
|
parren_count--;
|
|
if (parren_count == 0) {
|
|
/* All done */
|
|
BEGIN INITIAL;
|
|
*string_buf_ptr = '\0';
|
|
yylval.sym = symtable_get(string_buf);
|
|
return T_CEXPR;
|
|
} else {
|
|
*string_buf_ptr++ = ')';
|
|
}
|
|
}
|
|
<CEXPR>\n { ++yylineno; }
|
|
<CEXPR>[^()\n]+ {
|
|
char *yptr = yytext;
|
|
|
|
while (*yptr != '\0')
|
|
*string_buf_ptr++ = *yptr++;
|
|
}
|
|
|
|
{SPACE} ;
|
|
|
|
/* Register/SCB/SRAM definition keywords */
|
|
register { return T_REGISTER; }
|
|
const { yylval.value = FALSE; return T_CONST; }
|
|
download { return T_DOWNLOAD; }
|
|
address { return T_ADDRESS; }
|
|
access_mode { return T_ACCESS_MODE; }
|
|
RW|RO|WO {
|
|
if (strcmp(yytext, "RW") == 0)
|
|
yylval.value = RW;
|
|
else if (strcmp(yytext, "RO") == 0)
|
|
yylval.value = RO;
|
|
else
|
|
yylval.value = WO;
|
|
return T_MODE;
|
|
}
|
|
bit { return T_BIT; }
|
|
mask { return T_MASK; }
|
|
alias { return T_ALIAS; }
|
|
size { return T_SIZE; }
|
|
scb { return T_SCB; }
|
|
scratch_ram { return T_SRAM; }
|
|
accumulator { return T_ACCUM; }
|
|
allones { return T_ALLONES; }
|
|
allzeros { return T_ALLZEROS; }
|
|
none { return T_NONE; }
|
|
sindex { return T_SINDEX; }
|
|
A { return T_A; }
|
|
|
|
/* Opcodes */
|
|
shl { return T_SHL; }
|
|
shr { return T_SHR; }
|
|
ror { return T_ROR; }
|
|
rol { return T_ROL; }
|
|
mvi { return T_MVI; }
|
|
mov { return T_MOV; }
|
|
clr { return T_CLR; }
|
|
jmp { return T_JMP; }
|
|
jc { return T_JC; }
|
|
jnc { return T_JNC; }
|
|
je { return T_JE; }
|
|
jne { return T_JNE; }
|
|
jz { return T_JZ; }
|
|
jnz { return T_JNZ; }
|
|
call { return T_CALL; }
|
|
add { return T_ADD; }
|
|
adc { return T_ADC; }
|
|
bmov { return T_BMOV; }
|
|
inc { return T_INC; }
|
|
dec { return T_DEC; }
|
|
stc { return T_STC; }
|
|
clc { return T_CLC; }
|
|
cmp { return T_CMP; }
|
|
xor { return T_XOR; }
|
|
test { return T_TEST;}
|
|
and { return T_AND; }
|
|
or { return T_OR; }
|
|
ret { return T_RET; }
|
|
nop { return T_NOP; }
|
|
else { return T_ELSE; }
|
|
|
|
/* Allowed Symbols */
|
|
[-+,:()~|&."{};<>[\]!] { return yytext[0]; }
|
|
|
|
/* Number processing */
|
|
0[0-7]* {
|
|
yylval.value = strtol(yytext, NULL, 8);
|
|
return T_NUMBER;
|
|
}
|
|
|
|
0[xX][0-9a-fA-F]+ {
|
|
yylval.value = strtoul(yytext + 2, NULL, 16);
|
|
return T_NUMBER;
|
|
}
|
|
|
|
[1-9][0-9]* {
|
|
yylval.value = strtol(yytext, NULL, 10);
|
|
return T_NUMBER;
|
|
}
|
|
|
|
/* Include Files */
|
|
#include { return T_INCLUDE; BEGIN INCLUDE;}
|
|
<INCLUDE>[<>\"] { return yytext[0]; }
|
|
<INCLUDE>{PATH} { yylval.str = strdup(yytext); return T_PATH; }
|
|
<INCLUDE>; { BEGIN INITIAL; return yytext[0]; }
|
|
<INCLUDE>. { stop("Invalid include line", EX_DATAERR); }
|
|
|
|
/* For parsing C include files with #define foo */
|
|
#define { yylval.value = TRUE; return T_CONST; }
|
|
/* Throw away macros */
|
|
#define[^\n]*[()]+[^\n]* ;
|
|
{PATH} { yylval.str = strdup(yytext); return T_PATH; }
|
|
|
|
{WORD} { yylval.sym = symtable_get(yytext); return T_SYMBOL; }
|
|
|
|
. {
|
|
char buf[255];
|
|
|
|
snprintf(buf, sizeof(buf), "Invalid character "
|
|
"'%c'", yytext[0]);
|
|
stop(buf, EX_DATAERR);
|
|
}
|
|
%%
|
|
|
|
typedef struct include {
|
|
YY_BUFFER_STATE buffer;
|
|
int lineno;
|
|
char *filename;
|
|
SLIST_ENTRY(include) links;
|
|
}include_t;
|
|
|
|
SLIST_HEAD(, include) include_stack;
|
|
|
|
void
|
|
include_file(file_name, type)
|
|
char *file_name;
|
|
include_type type;
|
|
{
|
|
FILE *newfile;
|
|
include_t *include;
|
|
|
|
newfile = NULL;
|
|
/* Try the current directory first */
|
|
if (includes_search_curdir != 0 || type == SOURCE_FILE)
|
|
newfile = fopen(file_name, "r");
|
|
|
|
if (newfile == NULL && type != SOURCE_FILE) {
|
|
path_entry_t include_dir;
|
|
for (include_dir = search_path.slh_first;
|
|
include_dir != NULL;
|
|
include_dir = include_dir->links.sle_next) {
|
|
char fullname[PATH_MAX];
|
|
|
|
if ((include_dir->quoted_includes_only == TRUE)
|
|
&& (type != QUOTED_INCLUDE))
|
|
continue;
|
|
|
|
snprintf(fullname, sizeof(fullname),
|
|
"%s/%s", include_dir->directory, file_name);
|
|
|
|
if ((newfile = fopen(fullname, "r")) != NULL)
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (newfile == NULL) {
|
|
perror(file_name);
|
|
stop("Unable to open input file", EX_SOFTWARE);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
if (type != SOURCE_FILE) {
|
|
include = (include_t *)malloc(sizeof(include_t));
|
|
if (include == NULL) {
|
|
stop("Unable to allocate include stack entry",
|
|
EX_SOFTWARE);
|
|
/* NOTREACHED */
|
|
}
|
|
include->buffer = YY_CURRENT_BUFFER;
|
|
include->lineno = yylineno;
|
|
include->filename = yyfilename;
|
|
SLIST_INSERT_HEAD(&include_stack, include, links);
|
|
}
|
|
yy_switch_to_buffer(yy_create_buffer(newfile, YY_BUF_SIZE));
|
|
yylineno = 1;
|
|
yyfilename = strdup(file_name);
|
|
}
|
|
|
|
int
|
|
yywrap()
|
|
{
|
|
include_t *include;
|
|
|
|
yy_delete_buffer(YY_CURRENT_BUFFER);
|
|
(void)fclose(yyin);
|
|
if (yyfilename != NULL)
|
|
free(yyfilename);
|
|
yyfilename = NULL;
|
|
include = include_stack.slh_first;
|
|
if (include != NULL) {
|
|
yy_switch_to_buffer(include->buffer);
|
|
yylineno = include->lineno;
|
|
yyfilename = include->filename;
|
|
SLIST_REMOVE_HEAD(&include_stack, links);
|
|
free(include);
|
|
return (0);
|
|
}
|
|
return (1);
|
|
}
|