Upstream version 2.08rc7

1 files changed, 2120 insertions, 0 deletions

diff --git a/nasm.c b/nasm.c
new file mode 100644
index 0000000..d8f64c5
--- /dev/null
+++ b/nasm.c
@@ -0,0 +1,2120 @@
+/* ----------------------------------------------------------------------- *
+ *
+ *   Copyright 1996-2009 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)
+ *     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.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * The Netwide Assembler main program module
+ */
+
+#include "compiler.h"
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <time.h>
+
+#include "nasm.h"
+#include "nasmlib.h"
+#include "saa.h"
+#include "raa.h"
+#include "float.h"
+#include "stdscan.h"
+#include "insns.h"
+#include "preproc.h"
+#include "parser.h"
+#include "eval.h"
+#include "assemble.h"
+#include "labels.h"
+#include "output/outform.h"
+#include "listing.h"
+
+struct forwrefinfo {            /* info held on forward refs. */
+    int lineno;
+    int operand;
+};
+
+static int get_bits(char *value);
+static uint32_t get_cpu(char *cpu_str);
+static void parse_cmdline(int, char **);
+static void assemble_file(char *, StrList **);
+static void nasm_verror_gnu(int severity, const char *fmt, va_list args);
+static void nasm_verror_vc(int severity, const char *fmt, va_list args);
+static void nasm_verror_common(int severity, const char *fmt, va_list args);
+static bool is_suppressed_warning(int severity);
+static void usage(void);
+
+static int using_debug_info, opt_verbose_info;
+bool tasm_compatible_mode = false;
+int pass0, passn;
+int maxbits = 0;
+int globalrel = 0;
+
+static time_t official_compile_time;
+
+static char inname[FILENAME_MAX];
+static char outname[FILENAME_MAX];
+static char listname[FILENAME_MAX];
+static char errname[FILENAME_MAX];
+static int globallineno;        /* for forward-reference tracking */
+/* static int pass = 0; */
+struct ofmt *ofmt = &OF_DEFAULT;
+const struct dfmt *dfmt;
+
+static FILE *error_file;        /* Where to write error messages */
+
+FILE *ofile = NULL;
+int optimizing = -1;            /* number of optimization passes to take */
+static int sb, cmd_sb = 16;     /* by default */
+static uint32_t cmd_cpu = IF_PLEVEL;       /* highest level by default */
+static uint32_t cpu = IF_PLEVEL;   /* passed to insn_size & assemble.c */
+int64_t global_offset_changed;      /* referenced in labels.c */
+int64_t prev_offset_changed;
+int32_t stall_count;
+
+static struct location location;
+int in_abs_seg;                 /* Flag we are in ABSOLUTE seg */
+int32_t abs_seg;                   /* ABSOLUTE segment basis */
+int32_t abs_offset;                /* ABSOLUTE offset */
+
+static struct RAA *offsets;
+
+static struct SAA *forwrefs;    /* keep track of forward references */
+static const struct forwrefinfo *forwref;
+
+static Preproc *preproc;
+enum op_type {
+    op_normal,                  /* Preprocess and assemble */
+    op_preprocess,              /* Preprocess only */
+    op_depend,                  /* Generate dependencies */
+};
+static enum op_type operating_mode;
+/* Dependency flags */
+static bool depend_emit_phony = false;
+static bool depend_missing_ok = false;
+static const char *depend_target = NULL;
+static const char *depend_file = NULL;
+
+/*
+ * Which of the suppressible warnings are suppressed. Entry zero
+ * isn't an actual warning, but it used for -w+error/-Werror.
+ */
+
+static bool warning_on[ERR_WARN_MAX+1]; /* Current state */
+static bool warning_on_global[ERR_WARN_MAX+1]; /* Command-line state */
+
+static const struct warning {
+    const char *name;
+    const char *help;
+    bool enabled;
+} warnings[ERR_WARN_MAX+1] = {
+    {"error", "treat warnings as errors", false},
+    {"macro-params", "macro calls with wrong parameter count", true},
+    {"macro-selfref", "cyclic macro references", false},
+    {"macro-defaults", "macros with more default than optional parameters", true},
+    {"orphan-labels", "labels alone on lines without trailing `:'", true},
+    {"number-overflow", "numeric constant does not fit", true},
+    {"gnu-elf-extensions", "using 8- or 16-bit relocation in ELF32, a GNU extension", false},
+    {"float-overflow", "floating point overflow", true},
+    {"float-denorm", "floating point denormal", false},
+    {"float-underflow", "floating point underflow", false},
+    {"float-toolong", "too many digits in floating-point number", true},
+    {"user", "%warning directives", true},
+};
+
+/*
+ * This is a null preprocessor which just copies lines from input
+ * to output. It's used when someone explicitly requests that NASM
+ * not preprocess their source file.
+ */
+
+static void no_pp_reset(char *, int, ListGen *, StrList **);
+static char *no_pp_getline(void);
+static void no_pp_cleanup(int);
+static Preproc no_pp = {
+    no_pp_reset,
+    no_pp_getline,
+    no_pp_cleanup
+};
+
+/*
+ * get/set current offset...
+ */
+#define GET_CURR_OFFS (in_abs_seg?abs_offset:\
+		      raa_read(offsets,location.segment))
+#define SET_CURR_OFFS(x) (in_abs_seg?(void)(abs_offset=(x)):\
+			 (void)(offsets=raa_write(offsets,location.segment,(x))))
+
+static bool want_usage;
+static bool terminate_after_phase;
+int user_nolist = 0;            /* fbk 9/2/00 */
+
+static void nasm_fputs(const char *line, FILE * outfile)
+{
+    if (outfile) {
+        fputs(line, outfile);
+        putc('\n', outfile);
+    } else
+        puts(line);
+}
+
+/* Convert a struct tm to a POSIX-style time constant */
+static int64_t posix_mktime(struct tm *tm)
+{
+    int64_t t;
+    int64_t y = tm->tm_year;
+
+    /* See IEEE 1003.1:2004, section 4.14 */
+
+    t = (y-70)*365 + (y-69)/4 - (y-1)/100 + (y+299)/400;
+    t += tm->tm_yday;
+    t *= 24;
+    t += tm->tm_hour;
+    t *= 60;
+    t += tm->tm_min;
+    t *= 60;
+    t += tm->tm_sec;
+
+    return t;
+}
+
+static void define_macros_early(void)
+{
+    char temp[128];
+    struct tm lt, *lt_p, gm, *gm_p;
+    int64_t posix_time;
+
+    lt_p = localtime(&official_compile_time);
+    if (lt_p) {
+	lt = *lt_p;
+
+	strftime(temp, sizeof temp, "__DATE__=\"%Y-%m-%d\"", &lt);
+	pp_pre_define(temp);
+	strftime(temp, sizeof temp, "__DATE_NUM__=%Y%m%d", &lt);
+	pp_pre_define(temp);
+	strftime(temp, sizeof temp, "__TIME__=\"%H:%M:%S\"", &lt);
+	pp_pre_define(temp);
+	strftime(temp, sizeof temp, "__TIME_NUM__=%H%M%S", &lt);
+	pp_pre_define(temp);
+    }
+
+    gm_p = gmtime(&official_compile_time);
+    if (gm_p) {
+	gm = *gm_p;
+
+	strftime(temp, sizeof temp, "__UTC_DATE__=\"%Y-%m-%d\"", &gm);
+	pp_pre_define(temp);
+	strftime(temp, sizeof temp, "__UTC_DATE_NUM__=%Y%m%d", &gm);
+	pp_pre_define(temp);
+	strftime(temp, sizeof temp, "__UTC_TIME__=\"%H:%M:%S\"", &gm);
+	pp_pre_define(temp);
+	strftime(temp, sizeof temp, "__UTC_TIME_NUM__=%H%M%S", &gm);
+	pp_pre_define(temp);
+    }
+
+    if (gm_p)
+	posix_time = posix_mktime(&gm);
+    else if (lt_p)
+	posix_time = posix_mktime(&lt);
+    else
+	posix_time = 0;
+
+    if (posix_time) {
+	snprintf(temp, sizeof temp, "__POSIX_TIME__=%"PRId64, posix_time);
+	pp_pre_define(temp);
+    }
+}
+
+static void define_macros_late(void)
+{
+    char temp[128];
+
+    snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s\n",
+	     ofmt->shortname);
+    pp_pre_define(temp);
+}
+
+static void emit_dependencies(StrList *list)
+{
+    FILE *deps;
+    int linepos, len;
+    StrList *l, *nl;
+
+    if (depend_file && strcmp(depend_file, "-")) {
+	deps = fopen(depend_file, "w");
+	if (!deps) {
+	    nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
+			 "unable to write dependency file `%s'", depend_file);
+	    return;
+	}
+    } else {
+	deps = stdout;
+    }
+
+    linepos = fprintf(deps, "%s:", depend_target);
+    list_for_each(l, list) {
+	len = strlen(l->str);
+	if (linepos + len > 62) {
+	    fprintf(deps, " \\\n ");
+	    linepos = 1;
+	}
+	fprintf(deps, " %s", l->str);
+	linepos += len+1;
+    }
+    fprintf(deps, "\n\n");
+
+    list_for_each_safe(l, nl, list) {
+	if (depend_emit_phony)
+	    fprintf(deps, "%s:\n\n", l->str);
+	nasm_free(l);
+    }
+
+    if (deps != stdout)
+	fclose(deps);
+}
+
+int main(int argc, char **argv)
+{
+    StrList *depend_list = NULL, **depend_ptr;
+
+    time(&official_compile_time);
+
+    pass0 = 0;
+    want_usage = terminate_after_phase = false;
+    nasm_set_verror(nasm_verror_gnu);
+
+    error_file = stderr;
+
+    tolower_init();
+
+    nasm_init_malloc_error();
+    offsets = raa_init();
+    forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
+
+    preproc = &nasmpp;
+    operating_mode = op_normal;
+
+    seg_init();
+
+    /* Define some macros dependent on the runtime, but not
+       on the command line. */
+    define_macros_early();
+
+    parse_cmdline(argc, argv);
+
+    if (terminate_after_phase) {
+        if (want_usage)
+            usage();
+        return 1;
+    }
+
+    /* If debugging info is disabled, suppress any debug calls */
+    if (!using_debug_info)
+        ofmt->current_dfmt = &null_debug_form;
+
+    if (ofmt->stdmac)
+        pp_extra_stdmac(ofmt->stdmac);
+    parser_global_info(&location);
+    eval_global_info(ofmt, lookup_label, &location);
+
+    /* define some macros dependent of command-line */
+    define_macros_late();
+
+    depend_ptr = (depend_file || (operating_mode == op_depend))
+	? &depend_list : NULL;
+    if (!depend_target)
+	depend_target = outname;
+
+    switch (operating_mode) {
+    case op_depend:
+        {
+            char *line;
+
+	    if (depend_missing_ok)
+		pp_include_path(NULL);	/* "assume generated" */
+
+            preproc->reset(inname, 0, &nasmlist, depend_ptr);
+            if (outname[0] == '\0')
+                ofmt->filename(inname, outname);
+            ofile = NULL;
+            while ((line = preproc->getline()))
+                nasm_free(line);
+            preproc->cleanup(0);
+        }
+        break;
+
+    case op_preprocess:
+        {
+            char *line;
+            char *file_name = NULL;
+            int32_t prior_linnum = 0;
+            int lineinc = 0;
+
+            if (*outname) {
+                ofile = fopen(outname, "w");
+                if (!ofile)
+                    nasm_error(ERR_FATAL | ERR_NOFILE,
+                                 "unable to open output file `%s'",
+                                 outname);
+            } else
+                ofile = NULL;
+
+            location.known = false;
+
+	    /* pass = 1; */
+            preproc->reset(inname, 3, &nasmlist, depend_ptr);
+
+            while ((line = preproc->getline())) {
+                /*
+                 * We generate %line directives if needed for later programs
+                 */
+                int32_t linnum = prior_linnum += lineinc;
+                int altline = src_get(&linnum, &file_name);
+                if (altline) {
+                    if (altline == 1 && lineinc == 1)
+                        nasm_fputs("", ofile);
+                    else {
+                        lineinc = (altline != -1 || lineinc != 1);
+                        fprintf(ofile ? ofile : stdout,
+                                "%%line %"PRId32"+%d %s\n", linnum, lineinc,
+                                file_name);
+                    }
+                    prior_linnum = linnum;
+                }
+                nasm_fputs(line, ofile);
+                nasm_free(line);
+            }
+            nasm_free(file_name);
+            preproc->cleanup(0);
+            if (ofile)
+                fclose(ofile);
+            if (ofile && terminate_after_phase)
+                remove(outname);
+	    ofile = NULL;
+        }
+        break;
+
+    case op_normal:
+        {
+            /*
+             * We must call ofmt->filename _anyway_, even if the user
+             * has specified their own output file, because some
+             * formats (eg OBJ and COFF) use ofmt->filename to find out
+             * the name of the input file and then put that inside the
+             * file.
+             */
+            ofmt->filename(inname, outname);
+
+            ofile = fopen(outname, (ofmt->flags & OFMT_TEXT) ? "w" : "wb");
+            if (!ofile) {
+                nasm_error(ERR_FATAL | ERR_NOFILE,
+                             "unable to open output file `%s'", outname);
+            }
+
+            /*
+             * We must call init_labels() before ofmt->init() since
+             * some object formats will want to define labels in their
+             * init routines. (eg OS/2 defines the FLAT group)
+             */
+            init_labels();
+
+            ofmt->init();
+	    dfmt = ofmt->current_dfmt;
+            dfmt->init();
+
+            assemble_file(inname, depend_ptr);
+
+            if (!terminate_after_phase) {
+                ofmt->cleanup(using_debug_info);
+                cleanup_labels();
+		fflush(ofile);
+		if (ferror(ofile)) {
+		    nasm_error(ERR_NONFATAL|ERR_NOFILE,
+				 "write error on output file `%s'", outname);
+		}
+	    }
+
+	    if (ofile) {
+		fclose(ofile);
+		if (terminate_after_phase)
+		    remove(outname);
+		ofile = NULL;
+	    }
+        }
+        break;
+    }
+
+    if (depend_list && !terminate_after_phase)
+	emit_dependencies(depend_list);
+
+    if (want_usage)
+        usage();
+
+    raa_free(offsets);
+    saa_free(forwrefs);
+    eval_cleanup();
+    stdscan_cleanup();
+
+    return terminate_after_phase;
+}
+
+/*
+ * Get a parameter for a command line option.
+ * First arg must be in the form of e.g. -f...
+ */
+static char *get_param(char *p, char *q, bool *advance)
+{
+    *advance = false;
+    if (p[2]) /* the parameter's in the option */
+        return nasm_skip_spaces(p + 2);
+    if (q && q[0]) {
+        *advance = true;
+        return q;
+    }
+    nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
+                 "option `-%c' requires an argument", p[1]);
+    return NULL;
+}
+
+/*
+ * Copy a filename
+ */
+static void copy_filename(char *dst, const char *src)
+{
+    size_t len = strlen(src);
+
+    if (len >= (size_t)FILENAME_MAX) {
+	nasm_error(ERR_FATAL | ERR_NOFILE, "file name too long");
+	return;
+    }
+    strncpy(dst, src, FILENAME_MAX);
+}
+
+/*
+ * Convert a string to Make-safe form
+ */
+static char *quote_for_make(const char *str)
+{
+    const char *p;
+    char *os, *q;
+
+    size_t n = 1;		/* Terminating zero */
+    size_t nbs = 0;
+
+    if (!str)
+	return NULL;
+
+    for (p = str; *p; p++) {
+	switch (*p) {
+	case ' ':
+	case '\t':
+	    /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
+	    n += nbs + 2;
+	    nbs = 0;
+	    break;
+	case '$':
+	case '#':
+	    nbs = 0;
+	    n += 2;
+	    break;
+	case '\\':
+	    nbs++;
+	    n++;
+	    break;
+	default:
+	    nbs = 0;
+	    n++;
+	break;
+	}
+    }
+
+    /* Convert N backslashes at the end of filename to 2N backslashes */
+    if (nbs)
+	n += nbs;
+
+    os = q = nasm_malloc(n);
+
+    nbs = 0;
+    for (p = str; *p; p++) {
+	switch (*p) {
+	case ' ':
+	case '\t':
+	    while (nbs--)
+		*q++ = '\\';
+	    *q++ = '\\';
+	    *q++ = *p;
+	    break;
+	case '$':
+	    *q++ = *p;
+	    *q++ = *p;
+	    nbs = 0;
+	    break;
+	case '#':
+	    *q++ = '\\';
+	    *q++ = *p;
+	    nbs = 0;
+	    break;
+	case '\\':
+	    *q++ = *p;
+	    nbs++;
+	    break;
+	default:
+	    *q++ = *p;
+	    nbs = 0;
+	break;
+	}
+    }
+    while (nbs--)
+	*q++ = '\\';
+
+    *q = '\0';
+
+    return os;
+}
+
+struct textargs {
+    const char *label;
+    int value;
+};
+
+#define OPT_PREFIX 0
+#define OPT_POSTFIX 1
+struct textargs textopts[] = {
+    {"prefix", OPT_PREFIX},
+    {"postfix", OPT_POSTFIX},
+    {NULL, 0}
+};
+
+static bool stopoptions = false;
+static bool process_arg(char *p, char *q)
+{
+    char *param;
+    int i;
+    bool advance = false;
+    bool do_warn;
+
+    if (!p || !p[0])
+        return false;
+
+    if (p[0] == '-' && !stopoptions) {
+	if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
+	    /* These parameters take values */
+	    if (!(param = get_param(p, q, &advance)))
+		return advance;
+	}
+
+        switch (p[1]) {
+        case 's':
+            error_file = stdout;
+            break;
+
+	case 'o':		/* output file */
+	    copy_filename(outname, param);
+	    break;
+
+	case 'f':		/* output format */
+	    ofmt = ofmt_find(param);
+	    if (!ofmt) {
+		nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
+			     "unrecognised output format `%s' - "
+			     "use -hf for a list", param);
+	    }
+	    break;
+
+	case 'O':		/* Optimization level */
+	{
+	    int opt;
+
+	    if (!*param) {
+		/* Naked -O == -Ox */
+		optimizing = INT_MAX >> 1; /* Almost unlimited */
+	    } else {
+		while (*param) {
+		    switch (*param) {
+		    case '0': case '1': case '2': case '3': case '4':
+		    case '5': case '6': case '7': case '8': case '9':
+			opt = strtoul(param, &param, 10);
+
+			/* -O0 -> optimizing == -1, 0.98 behaviour */
+			/* -O1 -> optimizing == 0, 0.98.09 behaviour */
+			if (opt < 2)
+			    optimizing = opt - 1;
+			else
+			    optimizing = opt;
+			break;
+
+		    case 'v':
+		    case '+':
+			param++;
+			opt_verbose_info = true;
+			break;
+
+		    case 'x':
+			param++;
+			optimizing = INT_MAX >> 1; /* Almost unlimited */
+			break;
+
+		    default:
+			nasm_error(ERR_FATAL,
+				     "unknown optimization option -O%c\n",
+				     *param);
+			break;
+		    }
+		}
+	    }
+	    break;
+	}
+
+	case 'p':			/* pre-include */
+	case 'P':
+	    pp_pre_include(param);
+	    break;
+
+	case 'd':			/* pre-define */
+	case 'D':
+	    pp_pre_define(param);
+	    break;
+
+	case 'u':			/* un-define */
+	case 'U':
+	    pp_pre_undefine(param);
+	    break;
+
+	case 'i':			/* include search path */
+	case 'I':
+	    pp_include_path(param);
+	    break;
+
+	case 'l':			/* listing file */
+	    copy_filename(listname, param);
+	    break;
+
+	case 'Z':			/* error messages file */
+	    copy_filename(errname, param);
+	    break;
+
+	case 'F':			/* specify debug format */
+	    ofmt->current_dfmt = dfmt_find(ofmt, param);
+	    if (!ofmt->current_dfmt) {
+		nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
+			     "unrecognized debug format `%s' for"
+			     " output format `%s'",
+			     param, ofmt->shortname);
+	    }
+	    using_debug_info = true;
+	    break;
+
+	case 'X':		/* specify error reporting format */
+	    if (nasm_stricmp("vc", param) == 0)
+		nasm_set_verror(nasm_verror_vc);
+	    else if (nasm_stricmp("gnu", param) == 0)
+		nasm_set_verror(nasm_verror_gnu);
+	    else
+		nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
+			     "unrecognized error reporting format `%s'",
+			     param);
+            break;
+
+        case 'g':
+            using_debug_info = true;
+            break;
+
+        case 'h':
+            printf
+                ("usage: nasm [-@ response file] [-o outfile] [-f format] "
+                 "[-l listfile]\n"
+                 "            [options...] [--] filename\n"
+                 "    or nasm -v   for version info\n\n"
+                 "    -t          assemble in SciTech TASM compatible mode\n"
+                 "    -g          generate debug information in selected format\n");
+            printf
+                ("    -E (or -e)  preprocess only (writes output to stdout by default)\n"
+                 "    -a          don't preprocess (assemble only)\n"
+                 "    -M          generate Makefile dependencies on stdout\n"
+                 "    -MG         d:o, missing files assumed generated\n"
+                 "    -MF <file>  set Makefile dependency file\n"
+                 "    -MD <file>  assemble and generate dependencies\n"
+                 "    -MT <file>  dependency target name\n"
+                 "    -MQ <file>  dependency target name (quoted)\n"
+                 "    -MP         emit phony target\n\n"
+                 "    -Z<file>    redirect error messages to file\n"
+                 "    -s          redirect error messages to stdout\n\n"
+                 "    -F format   select a debugging format\n\n"
+                 "    -I<path>    adds a pathname to the include file path\n");
+            printf
+                ("    -O<digit>   optimize branch offsets\n"
+                 "                -O0: No optimization (default)\n"
+                 "                -O1: Minimal optimization\n"
+                 "                -Ox: Multipass optimization (recommended)\n\n"
+                 "    -P<file>    pre-includes a file\n"
+                 "    -D<macro>[=<value>] pre-defines a macro\n"
+                 "    -U<macro>   undefines a macro\n"
+                 "    -X<format>  specifies error reporting format (gnu or vc)\n"
+                 "    -w+foo      enables warning foo (equiv. -Wfoo)\n"
+                 "    -w-foo      disable warning foo (equiv. -Wno-foo)\n\n"
+                 "--prefix,--postfix\n"
+                 "  this options prepend or append the given argument to all\n"
+                 "  extern and global variables\n\n"
+                 "Warnings:\n");
+            for (i = 0; i <= ERR_WARN_MAX; i++)
+                printf("    %-23s %s (default %s)\n",
+                       warnings[i].name, warnings[i].help,
+                       warnings[i].enabled ? "on" : "off");
+            printf
+                ("\nresponse files should contain command line parameters"
+                 ", one per line.\n");
+            if (p[2] == 'f') {
+                printf("\nvalid output formats for -f are"
+                       " (`*' denotes default):\n");
+                ofmt_list(ofmt, stdout);
+            } else {
+                printf("\nFor a list of valid output formats, use -hf.\n");
+                printf("For a list of debug formats, use -f <form> -y.\n");
+            }
+            exit(0);            /* never need usage message here */
+            break;
+
+        case 'y':
+            printf("\nvalid debug formats for '%s' output format are"
+                   " ('*' denotes default):\n", ofmt->shortname);
+            dfmt_list(ofmt, stdout);
+            exit(0);
+            break;
+
+        case 't':
+            tasm_compatible_mode = true;
+            break;
+
+        case 'v':
+	    printf("NASM version %s compiled on %s%s\n",
+		   nasm_version, nasm_date, nasm_compile_options);
+	    exit(0);        /* never need usage message here */
+            break;
+
+        case 'e':              /* preprocess only */
+	case 'E':
+            operating_mode = op_preprocess;
+            break;
+
+        case 'a':              /* assemble only - don't preprocess */
+            preproc = &no_pp;
+            break;
+
+	case 'W':
+	    if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
+		do_warn = false;
+		param += 3;
+	    } else {
+		do_warn = true;
+	    }
+	    goto set_warning;
+
+        case 'w':
+            if (param[0] != '+' && param[0] != '-') {
+                nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
+                             "invalid option to `-w'");
+		break;
+            }
+	    do_warn = (param[0] == '+');
+	    param++;
+	    goto set_warning;
+	set_warning:
+	    for (i = 0; i <= ERR_WARN_MAX; i++)
+		if (!nasm_stricmp(param, warnings[i].name))
+		    break;
+	    if (i <= ERR_WARN_MAX)
+		warning_on_global[i] = do_warn;
+	    else if (!nasm_stricmp(param, "all"))
+		for (i = 1; i <= ERR_WARN_MAX; i++)
+		    warning_on_global[i] = do_warn;
+	    else if (!nasm_stricmp(param, "none"))
+		for (i = 1; i <= ERR_WARN_MAX; i++)
+		    warning_on_global[i] = !do_warn;
+	    else
+		nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
+			     "invalid warning `%s'", param);
+            break;
+
+        case 'M':
+	    switch (p[2]) {
+	    case 0:
+		operating_mode = op_depend;
+		break;
+	    case 'G':
+		operating_mode = op_depend;
+		depend_missing_ok = true;
+		break;
+	    case 'P':
+		depend_emit_phony = true;
+		break;
+	    case 'D':
+		depend_file = q;
+		advance = true;
+		break;
+	    case 'T':
+		depend_target = q;
+		advance = true;
+		break;
+	    case 'Q':
+		depend_target = quote_for_make(q);
+		advance = true;
+		break;
+	    default:
+		nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
+			     "unknown dependency option `-M%c'", p[2]);
+		break;
+	    }
+	    if (advance && (!q || !q[0])) {
+		nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
+			     "option `-M%c' requires a parameter", p[2]);
+		break;
+	    }
+            break;
+
+        case '-':
+            {
+                int s;
+
+                if (p[2] == 0) {        /* -- => stop processing options */
+                    stopoptions = 1;
+                    break;
+                }
+                for (s = 0; textopts[s].label; s++) {
+                    if (!nasm_stricmp(p + 2, textopts[s].label)) {
+                        break;
+                    }
+                }
+
+                switch (s) {
+
+                case OPT_PREFIX:
+                case OPT_POSTFIX:
+                    {
+                        if (!q) {
+                            nasm_error(ERR_NONFATAL | ERR_NOFILE |
+                                         ERR_USAGE,
+                                         "option `--%s' requires an argument",
+                                         p + 2);
+                            break;
+                        } else {
+                            advance = 1, param = q;
+                        }
+
+                        if (s == OPT_PREFIX) {
+                            strncpy(lprefix, param, PREFIX_MAX - 1);
+                            lprefix[PREFIX_MAX - 1] = 0;
+                            break;
+                        }
+                        if (s == OPT_POSTFIX) {
+                            strncpy(lpostfix, param, POSTFIX_MAX - 1);
+                            lpostfix[POSTFIX_MAX - 1] = 0;
+                            break;
+                        }
+                        break;
+                    }
+                default:
+                    {
+                        nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
+                                     "unrecognised option `--%s'", p + 2);
+                        break;
+                    }
+                }
+                break;
+            }
+
+        default:
+            if (!ofmt->setinfo(GI_SWITCH, &p))
+                nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
+                             "unrecognised option `-%c'", p[1]);
+            break;
+        }
+    } else {
+        if (*inname) {
+            nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
+                         "more than one input file specified");
+        } else {
+            copy_filename(inname, p);
+	}
+    }
+
+    return advance;
+}
+
+#define ARG_BUF_DELTA 128
+
+static void process_respfile(FILE * rfile)
+{
+    char *buffer, *p, *q, *prevarg;
+    int bufsize, prevargsize;
+
+    bufsize = prevargsize = ARG_BUF_DELTA;
+    buffer = nasm_malloc(ARG_BUF_DELTA);
+    prevarg = nasm_malloc(ARG_BUF_DELTA);
+    prevarg[0] = '\0';
+
+    while (1) {                 /* Loop to handle all lines in file */
+        p = buffer;
+        while (1) {             /* Loop to handle long lines */
+            q = fgets(p, bufsize - (p - buffer), rfile);
+            if (!q)
+                break;
+            p += strlen(p);
+            if (p > buffer && p[-1] == '\n')
+                break;
+            if (p - buffer > bufsize - 10) {
+                int offset;
+                offset = p - buffer;
+                bufsize += ARG_BUF_DELTA;
+                buffer = nasm_realloc(buffer, bufsize);
+                p = buffer + offset;
+            }
+        }
+
+        if (!q && p == buffer) {
+            if (prevarg[0])
+                process_arg(prevarg, NULL);
+            nasm_free(buffer);
+            nasm_free(prevarg);
+            return;
+        }
+
+        /*
+         * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
+         * them are present at the end of the line.
+         */
+        *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
+
+        while (p > buffer && nasm_isspace(p[-1]))
+            *--p = '\0';
+
+        p = nasm_skip_spaces(buffer);
+
+        if (process_arg(prevarg, p))
+            *p = '\0';
+
+        if ((int) strlen(p) > prevargsize - 10) {
+            prevargsize += ARG_BUF_DELTA;
+            prevarg = nasm_realloc(prevarg, prevargsize);
+        }
+        strncpy(prevarg, p, prevargsize);
+    }
+}
+
+/* Function to process args from a string of args, rather than the
+ * argv array. Used by the environment variable and response file
+ * processing.
+ */
+static void process_args(char *args)
+{
+    char *p, *q, *arg, *prevarg;
+    char separator = ' ';
+
+    p = args;
+    if (*p && *p != '-')
+        separator = *p++;
+    arg = NULL;
+    while (*p) {
+        q = p;
+        while (*p && *p != separator)
+            p++;
+        while (*p == separator)
+            *p++ = '\0';
+        prevarg = arg;
+        arg = q;
+        if (process_arg(prevarg, arg))
+            arg = NULL;
+    }
+    if (arg)
+        process_arg(arg, NULL);
+}
+
+static void process_response_file(const char *file)
+{
+    char str[2048];
+    FILE *f = fopen(file, "r");
+    if (!f) {
+	perror(file);
+	exit(-1);
+    }
+    while (fgets(str, sizeof str, f)) {
+	process_args(str);
+    }
+    fclose(f);
+}
+
+static void parse_cmdline(int argc, char **argv)
+{
+    FILE *rfile;
+    char *envreal, *envcopy = NULL, *p, *arg;
+    int i;
+
+    *inname = *outname = *listname = *errname = '\0';
+    for (i = 0; i <= ERR_WARN_MAX; i++)
+	warning_on_global[i] = warnings[i].enabled;
+
+    /*
+     * First, process the NASMENV environment variable.
+     */
+    envreal = getenv("NASMENV");
+    arg = NULL;
+    if (envreal) {
+        envcopy = nasm_strdup(envreal);
+        process_args(envcopy);
+        nasm_free(envcopy);
+    }
+
+    /*
+     * Now process the actual command line.
+     */
+    while (--argc) {
+	bool advance;
+        argv++;
+        if (argv[0][0] == '@') {
+            /* We have a response file, so process this as a set of
+             * arguments like the environment variable. This allows us
+             * to have multiple arguments on a single line, which is
+             * different to the -@resp file processing below for regular
+             * NASM.
+             */
+	    process_response_file(argv[0]+1);
+            argc--;
+            argv++;
+        }
+        if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
+	    p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
+            if (p) {
+		rfile = fopen(p, "r");
+                if (rfile) {
+                    process_respfile(rfile);
+                    fclose(rfile);
+                } else
+                    nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
+                                 "unable to open response file `%s'", p);
+            }
+        } else
+            advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
+        argv += advance, argc -= advance;
+    }
+
+    /* Look for basic command line typos.  This definitely doesn't
+       catch all errors, but it might help cases of fumbled fingers. */
+    if (!*inname)
+        nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
+                     "no input file specified");
+    else if (!strcmp(inname, errname) ||
+	     !strcmp(inname, outname) ||
+	     !strcmp(inname, listname) ||
+	     (depend_file && !strcmp(inname, depend_file)))
+	nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
+		     "file `%s' is both input and output file",
+		     inname);
+
+    if (*errname) {
+	error_file = fopen(errname, "w");
+	if (!error_file) {
+	    error_file = stderr;        /* Revert to default! */
+	    nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
+			 "cannot open file `%s' for error messages",
+			 errname);
+	}
+    }
+}
+
+static enum directives getkw(char **directive, char **value);
+
+static void assemble_file(char *fname, StrList **depend_ptr)
+{
+    char *directive, *value, *p, *q, *special, *line;
+    insn output_ins;
+    int i, validid;
+    bool rn_error;
+    int32_t seg;
+    int64_t offs;
+    struct tokenval tokval;
+    expr *e;
+    int pass_max;
+
+    if (cmd_sb == 32 && cmd_cpu < IF_386)
+        nasm_error(ERR_FATAL, "command line: "
+                     "32-bit segment size requires a higher cpu");
+
+    pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
+    for (passn = 1; pass0 <= 2; passn++) {
+        int pass1, pass2;
+        ldfunc def_label;
+
+        pass1 = pass0 == 2 ? 2 : 1;	/* 1, 1, 1, ..., 1, 2 */
+        pass2 = passn > 1  ? 2 : 1;     /* 1, 2, 2, ..., 2, 2 */
+        /* pass0                           0, 0, 0, ..., 1, 2 */
+
+        def_label = passn > 1 ? redefine_label : define_label;
+
+        globalbits = sb = cmd_sb;   /* set 'bits' to command line default */
+        cpu = cmd_cpu;
+        if (pass0 == 2) {
+            if (*listname)
+                nasmlist.init(listname, nasm_error);
+        }
+        in_abs_seg = false;
+        global_offset_changed = 0;  /* set by redefine_label */
+        location.segment = ofmt->section(NULL, pass2, &sb);
+        globalbits = sb;
+        if (passn > 1) {
+            saa_rewind(forwrefs);
+            forwref = saa_rstruct(forwrefs);
+            raa_free(offsets);
+            offsets = raa_init();
+        }
+        preproc->reset(fname, pass1, &nasmlist,
+		       pass1 == 2 ? depend_ptr : NULL);
+        memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
+
+        globallineno = 0;
+        if (passn == 1)
+            location.known = true;
+        location.offset = offs = GET_CURR_OFFS;
+
+        while ((line = preproc->getline())) {
+	    enum directives d;
+            globallineno++;
+
+            /*
+	     * Here we parse our directives; this is not handled by the
+	     * 'real' parser.  This really should be a separate function.
+	     */
+            directive = line;
+	    d = getkw(&directive, &value);
+            if (d) {
+		int err = 0;
+
+                switch (d) {
+                case D_SEGMENT:		/* [SEGMENT n] */
+		case D_SECTION:
+                    seg = ofmt->section(value, pass2, &sb);
+                    if (seg == NO_SEG) {
+                        nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
+                                     "segment name `%s' not recognized",
+                                     value);
+                    } else {
+                        in_abs_seg = false;
+                        location.segment = seg;
+                    }
+                    break;
+                case D_EXTERN:		/* [EXTERN label:special] */
+                    if (*value == '$')
+                        value++;        /* skip initial $ if present */
+                    if (pass0 == 2) {
+                        q = value;
+                        while (*q && *q != ':')
+                            q++;
+                        if (*q == ':') {
+                            *q++ = '\0';
+                            ofmt->symdef(value, 0L, 0L, 3, q);
+                        }
+                    } else if (passn == 1) {
+                        q = value;
+                        validid = true;
+                        if (!isidstart(*q))
+                            validid = false;
+                        while (*q && *q != ':') {
+                            if (!isidchar(*q))
+                                validid = false;
+                            q++;
+                        }
+                        if (!validid) {
+                            nasm_error(ERR_NONFATAL,
+                                         "identifier expected after EXTERN");
+                            break;
+                        }
+                        if (*q == ':') {
+                            *q++ = '\0';
+                            special = q;
+                        } else
+                            special = NULL;
+                        if (!is_extern(value)) {        /* allow re-EXTERN to be ignored */
+                            int temp = pass0;
+                            pass0 = 1;  /* fake pass 1 in labels.c */
+                            declare_as_global(value, special);
+                            define_label(value, seg_alloc(), 0L, NULL,
+                                         false, true);
+                            pass0 = temp;
+                        }
+                    }           /* else  pass0 == 1 */
+                    break;
+                case D_BITS:		/* [BITS bits] */
+                    globalbits = sb = get_bits(value);
+                    break;
+                case D_GLOBAL:		/* [GLOBAL symbol:special] */
+                    if (*value == '$')
+                        value++;        /* skip initial $ if present */
+                    if (pass0 == 2) {   /* pass 2 */
+                        q = value;
+                        while (*q && *q != ':')
+                            q++;
+                        if (*q == ':') {
+                            *q++ = '\0';
+                            ofmt->symdef(value, 0L, 0L, 3, q);
+                        }
+                    } else if (pass2 == 1) {    /* pass == 1 */
+                        q = value;
+                        validid = true;
+                        if (!isidstart(*q))
+                            validid = false;
+                        while (*q && *q != ':') {
+                            if (!isidchar(*q))
+                                validid = false;
+                            q++;
+                        }
+                        if (!validid) {
+                            nasm_error(ERR_NONFATAL,
+                                         "identifier expected after GLOBAL");
+                            break;
+                        }
+                        if (*q == ':') {
+                            *q++ = '\0';
+                            special = q;
+                        } else
+                            special = NULL;
+                        declare_as_global(value, special);
+                    }           /* pass == 1 */
+                    break;
+                case D_COMMON:		/* [COMMON symbol size:special] */
+		{
+		    int64_t size;
+
+                    if (*value == '$')
+                        value++;        /* skip initial $ if present */
+		    p = value;
+		    validid = true;
+		    if (!isidstart(*p))
+			validid = false;
+		    while (*p && !nasm_isspace(*p)) {
+			if (!isidchar(*p))
+			    validid = false;
+			p++;
+		    }
+		    if (!validid) {
+			nasm_error(ERR_NONFATAL,
+				     "identifier expected after COMMON");
+			break;
+		    }
+		    if (*p) {
+                        p = nasm_zap_spaces_fwd(p);
+			q = p;
+			while (*q && *q != ':')
+			    q++;
+			if (*q == ':') {
+			    *q++ = '\0';
+			    special = q;
+			} else {
+			    special = NULL;
+			}
+			size = readnum(p, &rn_error);
+			if (rn_error) {
+			    nasm_error(ERR_NONFATAL,
+					 "invalid size specified"
+					 " in COMMON declaration");
+			    break;
+			}
+		    } else {
+			nasm_error(ERR_NONFATAL,
+				     "no size specified in"
+				     " COMMON declaration");
+			break;
+		    }
+
+                    if (pass0 < 2) {
+			define_common(value, seg_alloc(), size, special);
+                    } else if (pass0 == 2) {
+			if (special)
+			    ofmt->symdef(value, 0L, 0L, 3, special);
+                    }
+                    break;
+		}
+                case D_ABSOLUTE:		/* [ABSOLUTE address] */
+                    stdscan_reset();
+                    stdscan_set(value);
+                    tokval.t_type = TOKEN_INVALID;
+                    e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
+                                 nasm_error, NULL);
+                    if (e) {
+                        if (!is_reloc(e))
+                            nasm_error(pass0 ==
+                                         1 ? ERR_NONFATAL : ERR_PANIC,
+                                         "cannot use non-relocatable expression as "
+                                         "ABSOLUTE address");
+                        else {
+                            abs_seg = reloc_seg(e);
+                            abs_offset = reloc_value(e);
+                        }
+                    } else if (passn == 1)
+                        abs_offset = 0x100;     /* don't go near zero in case of / */
+                    else
+                        nasm_error(ERR_PANIC, "invalid ABSOLUTE address "
+                                     "in pass two");
+                    in_abs_seg = true;
+                    location.segment = NO_SEG;
+                    break;
+                case D_DEBUG:		/* [DEBUG] */
+		{
+		    char debugid[128];
+		    bool badid, overlong;
+
+                    p = value;
+                    q = debugid;
+		    badid = overlong = false;
+                    if (!isidstart(*p)) {
+                        badid = true;
+		    } else {
+			while (*p && !nasm_isspace(*p)) {
+			    if (q >= debugid + sizeof debugid - 1) {
+				overlong = true;
+				break;
+			    }
+			    if (!isidchar(*p))
+				badid = true;
+			    *q++ = *p++;
+			}
+			*q = 0;
+		    }
+                    if (badid) {
+			nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
+				   "identifier expected after DEBUG");
+			break;
+		    }
+		    if (overlong) {
+			nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
+				   "DEBUG identifier too long");
+			break;
+		    }
+                    p = nasm_skip_spaces(p);
+                    if (pass0 == 2)
+                        dfmt->debug_directive(debugid, p);
+                    break;
+		}
+                case D_WARNING:		/* [WARNING {+|-|*}warn-name] */
+                    value = nasm_skip_spaces(value);
+		    switch(*value) {
+		    case '-': validid = 0; value++; break;
+		    case '+': validid = 1; value++; break;
+		    case '*': validid = 2; value++; break;
+		    default:  validid = 1; break;
+		    }
+
+		    for (i = 1; i <= ERR_WARN_MAX; i++)
+			if (!nasm_stricmp(value, warnings[i].name))
+			    break;
+		    if (i <= ERR_WARN_MAX) {
+			switch(validid) {
+			case 0:
+			    warning_on[i] = false;
+			    break;
+			case 1:
+			    warning_on[i] = true;
+			    break;
+			case 2:
+			    warning_on[i] = warning_on_global[i];
+			    break;
+			}
+		    }
+		    else
+			nasm_error(ERR_NONFATAL,
+				     "invalid warning id in WARNING directive");
+                    break;
+                case D_CPU:		/* [CPU] */
+                    cpu = get_cpu(value);
+                    break;
+                case D_LIST:		/* [LIST {+|-}] */
+                    value = nasm_skip_spaces(value);
+                    if (*value == '+') {
+                        user_nolist = 0;
+                    } else {
+                        if (*value == '-') {
+                            user_nolist = 1;
+                        } else {
+			    err = 1;
+                        }
+                    }
+                    break;
+		case D_DEFAULT:		/* [DEFAULT] */
+		    stdscan_reset();
+                    stdscan_set(value);
+                    tokval.t_type = TOKEN_INVALID;
+		    if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
+			switch ((int)tokval.t_integer) {
+			case S_REL:
+			    globalrel = 1;
+			    break;
+			case S_ABS:
+			    globalrel = 0;
+			    break;
+			default:
+			    err = 1;
+			    break;
+			}
+		    } else {
+			err = 1;
+		    }
+		    break;
+		case D_FLOAT:
+		    if (float_option(value)) {
+			nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
+				     "unknown 'float' directive: %s",
+				     value);
+		    }
+		    break;
+                default:
+		    if (!d || !ofmt->directive(d, value, pass2))
+                        nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
+                                     "unrecognised directive [%s]",
+                                     directive);
+		    break;
+                }
+		if (err) {
+		    nasm_error(ERR_NONFATAL,
+				 "invalid parameter to [%s] directive",
+				 directive);
+		}
+            } else {            /* it isn't a directive */
+                parse_line(pass1, line, &output_ins, def_label);
+
+                if (optimizing > 0) {
+                    if (forwref != NULL && globallineno == forwref->lineno) {
+                        output_ins.forw_ref = true;
+                        do {
+                            output_ins.oprs[forwref->operand].opflags |= OPFLAG_FORWARD;
+                            forwref = saa_rstruct(forwrefs);
+                        } while (forwref != NULL
+                                 && forwref->lineno == globallineno);
+                    } else
+                        output_ins.forw_ref = false;
+
+		    if (output_ins.forw_ref) {
+			if (passn == 1) {
+			    for (i = 0; i < output_ins.operands; i++) {
+				if (output_ins.oprs[i].opflags & OPFLAG_FORWARD) {
+				    struct forwrefinfo *fwinf =
+					(struct forwrefinfo *)
+					saa_wstruct(forwrefs);
+				    fwinf->lineno = globallineno;
+                                fwinf->operand = i;
+				}
+			    }
+			}
+                    }
+                }
+
+                /*  forw_ref */
+                if (output_ins.opcode == I_EQU) {
+                    if (pass1 == 1) {
+                        /*
+                         * Special `..' EQUs get processed in pass two,
+                         * except `..@' macro-processor EQUs which are done
+                         * in the normal place.
+                         */
+                        if (!output_ins.label)
+                            nasm_error(ERR_NONFATAL,
+                                         "EQU not preceded by label");
+
+                        else if (output_ins.label[0] != '.' ||
+                                 output_ins.label[1] != '.' ||
+                                 output_ins.label[2] == '@') {
+                            if (output_ins.operands == 1 &&
+                                (output_ins.oprs[0].type & IMMEDIATE) &&
+                                output_ins.oprs[0].wrt == NO_SEG) {
+                                bool isext = !!(output_ins.oprs[0].opflags
+						& OPFLAG_EXTERN);
+                                def_label(output_ins.label,
+                                          output_ins.oprs[0].segment,
+                                          output_ins.oprs[0].offset, NULL,
+                                          false, isext);
+                            } else if (output_ins.operands == 2
+                                       && (output_ins.oprs[0].type & IMMEDIATE)
+                                       && (output_ins.oprs[0].type & COLON)
+                                       && output_ins.oprs[0].segment == NO_SEG
+                                       && output_ins.oprs[0].wrt == NO_SEG
+                                       && (output_ins.oprs[1].type & IMMEDIATE)
+                                       && output_ins.oprs[1].segment == NO_SEG
+                                       && output_ins.oprs[1].wrt == NO_SEG) {
+                                def_label(output_ins.label,
+                                          output_ins.oprs[0].offset | SEG_ABS,
+                                          output_ins.oprs[1].offset,
+					  NULL, false, false);
+                            } else
+                                nasm_error(ERR_NONFATAL,
+                                             "bad syntax for EQU");
+                        }
+                    } else {
+                        /*
+                         * Special `..' EQUs get processed here, except
+                         * `..@' macro processor EQUs which are done above.
+                         */
+                        if (output_ins.label[0] == '.' &&
+                            output_ins.label[1] == '.' &&
+                            output_ins.label[2] != '@') {
+                            if (output_ins.operands == 1 &&
+                                (output_ins.oprs[0].type & IMMEDIATE)) {
+                                define_label(output_ins.label,
+                                             output_ins.oprs[0].segment,
+                                             output_ins.oprs[0].offset,
+                                             NULL, false, false);
+                            } else if (output_ins.operands == 2
+                                       && (output_ins.oprs[0].type & IMMEDIATE)
+                                       && (output_ins.oprs[0].type & COLON)
+                                       && output_ins.oprs[0].segment == NO_SEG
+                                       && (output_ins.oprs[1].type & IMMEDIATE)
+                                       && output_ins.oprs[1].segment == NO_SEG) {
+                                define_label(output_ins.label,
+                                             output_ins.oprs[0].offset | SEG_ABS,
+                                             output_ins.oprs[1].offset,
+                                             NULL, false, false);
+                            } else
+                                nasm_error(ERR_NONFATAL,
+                                             "bad syntax for EQU");
+                        }
+                    }
+                } else {        /* instruction isn't an EQU */
+
+                    if (pass1 == 1) {
+
+                        int64_t l = insn_size(location.segment, offs, sb, cpu,
+                                           &output_ins, nasm_error);
+
+                        /* if (using_debug_info)  && output_ins.opcode != -1) */
+                        if (using_debug_info)
+                        {       /* fbk 03/25/01 */
+                            /* this is done here so we can do debug type info */
+                            int32_t typeinfo =
+                                TYS_ELEMENTS(output_ins.operands);
+                            switch (output_ins.opcode) {
+                            case I_RESB:
+                                typeinfo =
+                                    TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_BYTE;
+                                break;
+                            case I_RESW:
+                                typeinfo =
+                                    TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_WORD;
+                                break;
+                            case I_RESD:
+                                typeinfo =
+                                    TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_DWORD;
+                                break;
+                            case I_RESQ:
+                                typeinfo =
+                                    TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_QWORD;
+                                break;
+                            case I_REST:
+                                typeinfo =
+                                    TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_TBYTE;
+                                break;
+                            case I_RESO:
+                                typeinfo =
+                                    TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_OWORD;
+                                break;
+                            case I_RESY:
+                                typeinfo =
+                                    TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_YWORD;
+                                break;
+                            case I_DB:
+                                typeinfo |= TY_BYTE;
+                                break;
+                            case I_DW:
+                                typeinfo |= TY_WORD;
+                                break;
+                            case I_DD:
+                                if (output_ins.eops_float)
+                                    typeinfo |= TY_FLOAT;
+                                else
+                                    typeinfo |= TY_DWORD;
+                                break;
+                            case I_DQ:
+                                typeinfo |= TY_QWORD;
+                                break;
+                            case I_DT:
+                                typeinfo |= TY_TBYTE;
+                                break;
+			    case I_DO:
+				typeinfo |= TY_OWORD;
+				break;
+			    case I_DY:
+				typeinfo |= TY_YWORD;
+				break;
+                            default:
+                                typeinfo = TY_LABEL;
+
+                            }
+
+                            dfmt->debug_typevalue(typeinfo);
+                        }
+                        if (l != -1) {
+                            offs += l;
+                            SET_CURR_OFFS(offs);
+                        }
+                        /*
+                         * else l == -1 => invalid instruction, which will be
+                         * flagged as an error on pass 2
+                         */
+
+                    } else {
+                        offs += assemble(location.segment, offs, sb, cpu,
+                                         &output_ins, ofmt, nasm_error,
+                                         &nasmlist);
+                        SET_CURR_OFFS(offs);
+
+                    }
+                }               /* not an EQU */
+                cleanup_insn(&output_ins);
+            }
+            nasm_free(line);
+            location.offset = offs = GET_CURR_OFFS;
+        }                       /* end while (line = preproc->getline... */
+
+        if (pass0 == 2 && global_offset_changed && !terminate_after_phase)
+            nasm_error(ERR_NONFATAL,
+			 "phase error detected at end of assembly.");
+
+        if (pass1 == 1)
+            preproc->cleanup(1);
+
+        if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
+            pass0++;
+	} else if (global_offset_changed &&
+		 global_offset_changed < prev_offset_changed) {
+            prev_offset_changed = global_offset_changed;
+            stall_count = 0;
+	} else {
+	    stall_count++;
+	}
+
+	if (terminate_after_phase)
+	    break;
+
+        if ((stall_count > 997) || (passn >= pass_max)) {
+            /* We get here if the labels don't converge
+             * Example: FOO equ FOO + 1
+             */
+             nasm_error(ERR_NONFATAL,
+                          "Can't find valid values for all labels "
+                          "after %d passes, giving up.", passn);
+	     nasm_error(ERR_NONFATAL,
+			  "Possible causes: recursive EQUs, macro abuse.");
+	     break;
+	}
+    }
+
+    preproc->cleanup(0);
+    nasmlist.cleanup();
+    if (!terminate_after_phase && opt_verbose_info) {
+	/*  -On and -Ov switches */
+        fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
+    }
+}
+
+static enum directives getkw(char **directive, char **value)
+{
+    char *p, *q, *buf;
+
+    buf = nasm_skip_spaces(*directive);
+
+    /* it should be enclosed in [ ] */
+    if (*buf != '[')
+        return D_NONE;
+    q = strchr(buf, ']');
+    if (!q)
+        return D_NONE;
+
+    /* stip off the comments */
+    p = strchr(buf, ';');
+    if (p) {
+        if (p < q) /* ouch! somwhere inside */
+            return D_NONE;
+        *p = '\0';
+    }
+
+    /* no brace, no trailing spaces */
+    *q = '\0';
+    nasm_zap_spaces_rev(--q);
+
+    /* directive */
+    p = nasm_skip_spaces(++buf);
+    q = nasm_skip_word(p);
+    if (!q)
+        return D_NONE; /* sigh... no value there */
+    *q = '\0';
+    *directive = p;
+
+    /* and value finally */
+    p = nasm_skip_spaces(++q);
+    *value = p;
+
+    return find_directive(*directive);
+}
+
+/**
+ * gnu style error reporting
+ * This function prints an error message to error_file in the
+ * style used by GNU. An example would be:
+ * file.asm:50: error: blah blah blah
+ * where file.asm is the name of the file, 50 is the line number on
+ * which the error occurs (or is detected) and "error:" is one of
+ * the possible optional diagnostics -- it can be "error" or "warning"
+ * or something else.  Finally the line terminates with the actual
+ * error message.
+ *
+ * @param severity the severity of the warning or error
+ * @param fmt the printf style format string
+ */
+static void nasm_verror_gnu(int severity, const char *fmt, va_list ap)
+{
+    char *currentfile = NULL;
+    int32_t lineno = 0;
+
+    if (is_suppressed_warning(severity))
+        return;
+
+    if (!(severity & ERR_NOFILE))
+        src_get(&lineno, &currentfile);
+
+    if (currentfile) {
+	fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
+	nasm_free(currentfile);
+    } else {
+	fputs("nasm: ", error_file);
+    }
+
+    nasm_verror_common(severity, fmt, ap);
+}
+
+/**
+ * MS style error reporting
+ * This function prints an error message to error_file in the
+ * style used by Visual C and some other Microsoft tools. An example
+ * would be:
+ * file.asm(50) : error: blah blah blah
+ * where file.asm is the name of the file, 50 is the line number on
+ * which the error occurs (or is detected) and "error:" is one of
+ * the possible optional diagnostics -- it can be "error" or "warning"
+ * or something else.  Finally the line terminates with the actual
+ * error message.
+ *
+ * @param severity the severity of the warning or error
+ * @param fmt the printf style format string
+ */
+static void nasm_verror_vc(int severity, const char *fmt, va_list ap)
+{
+    char *currentfile = NULL;
+    int32_t lineno = 0;
+
+    if (is_suppressed_warning(severity))
+        return;
+
+    if (!(severity & ERR_NOFILE))
+        src_get(&lineno, &currentfile);
+
+    if (currentfile) {
+        fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
+        nasm_free(currentfile);
+    } else {
+        fputs("nasm: ", error_file);
+    }
+
+    nasm_verror_common(severity, fmt, ap);
+}
+
+/**
+ * check for supressed warning
+ * checks for suppressed warning or pass one only warning and we're
+ * not in pass 1
+ *
+ * @param severity the severity of the warning or error
+ * @return true if we should abort error/warning printing
+ */
+static bool is_suppressed_warning(int severity)
+{
+    /*
+     * See if it's a suppressed warning.
+     */
+    return (severity & ERR_MASK) == ERR_WARNING &&
+	(((severity & ERR_WARN_MASK) != 0 &&
+	  !warning_on[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
+	 /* See if it's a pass-one only warning and we're not in pass one. */
+	 ((severity & ERR_PASS1) && pass0 != 1) ||
+	 ((severity & ERR_PASS2) && pass0 != 2));
+}
+
+/**
+ * common error reporting
+ * This is the common back end of the error reporting schemes currently
+ * implemented.  It prints the nature of the warning and then the
+ * specific error message to error_file and may or may not return.  It
+ * doesn't return if the error severity is a "panic" or "debug" type.
+ *
+ * @param severity the severity of the warning or error
+ * @param fmt the printf style format string
+ */
+static void nasm_verror_common(int severity, const char *fmt, va_list args)
+{
+    char msg[1024];
+    const char *pfx;
+
+    switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
+    case ERR_WARNING:
+        pfx = "warning: ";
+        break;
+    case ERR_NONFATAL:
+        pfx = "error: ";
+        break;
+    case ERR_FATAL:
+        pfx = "fatal: ";
+        break;
+    case ERR_PANIC:
+        pfx = "panic: ";
+        break;
+    case ERR_DEBUG:
+        pfx = "debug: ";
+        break;
+    default:
+	pfx = "";
+	break;
+    }
+
+    vsnprintf(msg, sizeof msg, fmt, args);
+
+    fprintf(error_file, "%s%s\n", pfx, msg);
+
+    if (*listname)
+	nasmlist.error(severity, pfx, msg);
+
+    if (severity & ERR_USAGE)
+        want_usage = true;
+
+    switch (severity & ERR_MASK) {
+    case ERR_DEBUG:
+        /* no further action, by definition */
+        break;
+    case ERR_WARNING:
+	if (warning_on[0])	/* Treat warnings as errors */
+	    terminate_after_phase = true;
+	break;
+    case ERR_NONFATAL:
+        terminate_after_phase = true;
+        break;
+    case ERR_FATAL:
+        if (ofile) {
+            fclose(ofile);
+            remove(outname);
+	    ofile = NULL;
+        }
+        if (want_usage)
+            usage();
+        exit(1);                /* instantly die */
+        break;                  /* placate silly compilers */
+    case ERR_PANIC:
+        fflush(NULL);
+        /*	abort();	*//* halt, catch fire, and dump core */
+        exit(3);
+        break;
+    }
+}
+
+static void usage(void)
+{
+    fputs("type `nasm -h' for help\n", error_file);
+}
+
+#define BUF_DELTA 512
+
+static FILE *no_pp_fp;
+static ListGen *no_pp_list;
+static int32_t no_pp_lineinc;
+
+static void no_pp_reset(char *file, int pass, ListGen * listgen,
+			StrList **deplist)
+{
+    src_set_fname(nasm_strdup(file));
+    src_set_linnum(0);
+    no_pp_lineinc = 1;
+    no_pp_fp = fopen(file, "r");
+    if (!no_pp_fp)
+        nasm_error(ERR_FATAL | ERR_NOFILE,
+		   "unable to open input file `%s'", file);
+    no_pp_list = listgen;
+    (void)pass;                 /* placate compilers */
+
+    if (deplist) {
+	StrList *sl = nasm_malloc(strlen(file)+1+sizeof sl->next);
+	sl->next = NULL;
+	strcpy(sl->str, file);
+	*deplist = sl;
+    }
+}
+
+static char *no_pp_getline(void)
+{
+    char *buffer, *p, *q;
+    int bufsize;
+
+    bufsize = BUF_DELTA;
+    buffer = nasm_malloc(BUF_DELTA);
+    src_set_linnum(src_get_linnum() + no_pp_lineinc);
+
+    while (1) {                 /* Loop to handle %line */
+
+        p = buffer;
+        while (1) {             /* Loop to handle long lines */
+            q = fgets(p, bufsize - (p - buffer), no_pp_fp);
+            if (!q)
+                break;
+            p += strlen(p);
+            if (p > buffer && p[-1] == '\n')
+                break;
+            if (p - buffer > bufsize - 10) {
+                int offset;
+                offset = p - buffer;
+                bufsize += BUF_DELTA;
+                buffer = nasm_realloc(buffer, bufsize);
+                p = buffer + offset;
+            }
+        }
+
+        if (!q && p == buffer) {
+            nasm_free(buffer);
+            return NULL;
+        }
+
+        /*
+         * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
+         * them are present at the end of the line.
+         */
+        buffer[strcspn(buffer, "\r\n\032")] = '\0';
+
+        if (!nasm_strnicmp(buffer, "%line", 5)) {
+            int32_t ln;
+            int li;
+            char *nm = nasm_malloc(strlen(buffer));
+            if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
+                nasm_free(src_set_fname(nm));
+                src_set_linnum(ln);
+                no_pp_lineinc = li;
+                continue;
+            }
+            nasm_free(nm);
+        }
+        break;
+    }
+
+    no_pp_list->line(LIST_READ, buffer);
+
+    return buffer;
+}
+
+static void no_pp_cleanup(int pass)
+{
+    (void)pass;                     /* placate GCC */
+    fclose(no_pp_fp);
+}
+
+static uint32_t get_cpu(char *value)
+{
+    if (!strcmp(value, "8086"))
+        return IF_8086;
+    if (!strcmp(value, "186"))
+        return IF_186;
+    if (!strcmp(value, "286"))
+        return IF_286;
+    if (!strcmp(value, "386"))
+        return IF_386;
+    if (!strcmp(value, "486"))
+        return IF_486;
+    if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
+        return IF_PENT;
+    if (!strcmp(value, "686") ||
+        !nasm_stricmp(value, "ppro") ||
+        !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
+        return IF_P6;
+    if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
+        return IF_KATMAI;
+    if (!nasm_stricmp(value, "p4") ||   /* is this right? -- jrc */
+        !nasm_stricmp(value, "willamette"))
+        return IF_WILLAMETTE;
+    if (!nasm_stricmp(value, "prescott"))
+        return IF_PRESCOTT;
+    if (!nasm_stricmp(value, "x64") ||
+        !nasm_stricmp(value, "x86-64"))
+        return IF_X86_64;
+    if (!nasm_stricmp(value, "ia64") ||
+        !nasm_stricmp(value, "ia-64") ||
+        !nasm_stricmp(value, "itanium") ||
+        !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
+        return IF_IA64;
+
+    nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
+                 "unknown 'cpu' type");
+
+    return IF_PLEVEL;           /* the maximum level */
+}
+
+static int get_bits(char *value)
+{
+    int i;
+
+    if ((i = atoi(value)) == 16)
+        return i;               /* set for a 16-bit segment */
+    else if (i == 32) {
+        if (cpu < IF_386) {
+            nasm_error(ERR_NONFATAL,
+                         "cannot specify 32-bit segment on processor below a 386");
+            i = 16;
+        }
+    } else if (i == 64) {
+        if (cpu < IF_X86_64) {
+            nasm_error(ERR_NONFATAL,
+                         "cannot specify 64-bit segment on processor below an x86-64");
+            i = 16;
+        }
+        if (i != maxbits) {
+            nasm_error(ERR_NONFATAL,
+                         "%s output format does not support 64-bit code",
+                         ofmt->shortname);
+            i = 16;
+        }
+    } else {
+        nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
+                     "`%s' is not a valid segment size; must be 16, 32 or 64",
+                     value);
+        i = 16;
+    }
+    return i;
+}