chromium/third_party/nasm/asm/parser.c

/* ----------------------------------------------------------------------- *
 *
 *   Copyright 1996-2020 The NASM Authors - All Rights Reserved
 *   See the file AUTHORS included with the NASM distribution for
 *   the specific copyright holders.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following
 *   conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * 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.
 *
 *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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)
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 * ----------------------------------------------------------------------- */

/*
 * parser.c   source line parser for the Netwide Assembler
 */

#include "compiler.h"

#include "nctype.h"

#include "nasm.h"
#include "insns.h"
#include "nasmlib.h"
#include "error.h"
#include "stdscan.h"
#include "eval.h"
#include "parser.h"
#include "floats.h"
#include "assemble.h"
#include "tables.h"


static int end_expression_next(void);

static struct tokenval tokval;

static int prefix_slot(int prefix)
{ … }

static void process_size_override(insn *result, operand *op)
{ … }

/*
 * Brace decorators are are parsed here.  opmask and zeroing
 * decorators can be placed in any order.  e.g. zmm1 {k2}{z} or zmm2
 * {z}{k3} decorator(s) are placed at the end of an operand.
 */
static bool parse_braces(decoflags_t *decoflags)
{ … }

static inline unused_func
const expr *next_expr(const expr *e, const expr **next_list)
{ … }

static inline void init_operand(operand *op)
{ … }

static int parse_mref(operand *op, const expr *e)
{ … }

static void mref_set_optype(operand *op)
{ … }

/*
 * Convert an expression vector returned from evaluate() into an
 * extop structure.  Return zero on success.  Note that the eop
 * already has dup and elem set, so we can't clear it here.
 */
static int value_to_extop(expr *vect, extop *eop, int32_t myseg)
{ … }

/*
 * Parse an extended expression, used by db et al. "elem" is the element
 * size; initially comes from the specific opcode (e.g. db == 1) but
 * can be overridden.
 */
static int parse_eops(extop **result, bool critical, int elem)
{ … }

insn *parse_line(char *buffer, insn *result)
{ … }

static int end_expression_next(void)
{ … }

static void free_eops(extop *e)
{ … }

void cleanup_insn(insn * i)
{ … }