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/*
* GAS-compatible parser header file
*
* Copyright (C) 2005-2007 Peter Johnson
*
* 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.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of other contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER 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 OTHER 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.
*/
#ifndef YASM_GAS_PARSER_H
#define YASM_GAS_PARSER_H
#define YYCTYPE unsigned char
#define MAX_SAVED_LINE_LEN 80
enum tokentype {
INTNUM = 258,
FLTNUM,
STRING,
REG,
REGGROUP,
SEGREG,
TARGETMOD,
LEFT_OP,
RIGHT_OP,
ID,
LABEL,
CPP_LINE_MARKER,
NASM_LINE_MARKER,
NONE
};
typedef union {
unsigned int int_info;
yasm_intnum *intn;
yasm_floatnum *flt;
yasm_bytecode *bc;
uintptr_t arch_data;
struct {
char *contents;
size_t len;
} str;
} yystype;
#define YYSTYPE yystype
enum gas_parser_state {
INITIAL,
COMMENT,
SECTION_DIRECTIVE,
NASM_FILENAME
};
typedef struct yasm_parser_gas {
/*@only@*/ yasm_object *object;
/* last "base" label for local (.) labels */
/*@null@*/ char *locallabel_base;
size_t locallabel_base_len;
/* .line/.file: we have to see both to start setting linemap versions */
int dir_fileline;
/*@null@*/ char *dir_file;
unsigned long dir_line;
/* Have we seen a line marker? */
int seen_line_marker;
/*@dependent@*/ yasm_preproc *preproc;
/*@dependent@*/ yasm_errwarns *errwarns;
/*@dependent@*/ yasm_linemap *linemap;
/*@null@*/ yasm_bytecode *prev_bc;
yasm_bytecode *temp_bc;
int save_input;
YYCTYPE save_line[2][MAX_SAVED_LINE_LEN];
int save_last;
/* Line data storage used in preproc_input(). */
char *line, *linepos;
size_t lineleft;
yasm_scanner s;
enum gas_parser_state state;
int token; /* enum tokentype or any character */
yystype tokval;
char tokch; /* first character of token */
/* one token of lookahead; used sparingly */
int peek_token; /* NONE if none */
yystype peek_tokval;
char peek_tokch;
/* Index of local labels; what's stored here is the /next/ index,
* so these are all 0 at start.
*/
unsigned long local[10];
/* Parser-handled directives HAMT lookup */
HAMT *dirs;
int intel_syntax;
int is_nasm_preproc;
int is_cpp_preproc;
} yasm_parser_gas;
/* shorter access names to commonly used parser_gas fields */
#define p_object (parser_gas->object)
#define p_symtab (parser_gas->object->symtab)
#define cursect (parser_gas->object->cur_section)
#define curtok (parser_gas->token)
#define curval (parser_gas->tokval)
#define INTNUM_val (curval.intn)
#define FLTNUM_val (curval.flt)
#define STRING_val (curval.str)
#define REG_val (curval.arch_data)
#define REGGROUP_val (curval.arch_data)
#define SEGREG_val (curval.arch_data)
#define TARGETMOD_val (curval.arch_data)
#define ID_val (curval.str.contents)
#define ID_len (curval.str.len)
#define LABEL_val (curval.str.contents)
#define LABEL_len (curval.str.len)
#define cur_line (yasm_linemap_get_current(parser_gas->linemap))
#define p_expr_new(l,o,r) yasm_expr_create(o,l,r,cur_line)
#define p_expr_new_tree(l,o,r) yasm_expr_create_tree(l,o,r,cur_line)
#define p_expr_new_branch(o,r) yasm_expr_create_branch(o,r,cur_line)
#define p_expr_new_ident(r) yasm_expr_create_ident(r,cur_line)
yasm_bytecode *parse_instr_intel(yasm_parser_gas *parser_gas);
void gas_parser_parse(yasm_parser_gas *parser_gas);
void gas_parser_cleanup(yasm_parser_gas *parser_gas);
int gas_parser_lex(YYSTYPE *lvalp, yasm_parser_gas *parser_gas);
#endif
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