--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nasmbuild/nasm-2.13rc9/asm/nasm.c	Thu Mar 30 20:58:41 2017 +0000
@@ -0,0 +1,1699 @@
+/* ----------------------------------------------------------------------- *
+ *
+ *   Copyright 1996-2017 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 <limits.h>
+#include <time.h>
+
+#include "nasm.h"
+#include "nasmlib.h"
+#include "error.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 "outform.h"
+#include "listing.h"
+#include "iflag.h"
+#include "ver.h"
+
+/*
+ * This is the maximum number of optimization passes to do.  If we ever
+ * find a case where the optimizer doesn't naturally converge, we might
+ * have to drop this value so the assembler doesn't appear to just hang.
+ */
+#define MAX_OPTIMIZE (INT_MAX >> 1)
+
+struct forwrefinfo {            /* info held on forward refs. */
+    int lineno;
+    int operand;
+};
+
+static void parse_cmdline(int, char **, int);
+static void assemble_file(char *, StrList **);
+static bool is_suppressed_warning(int severity);
+static bool skip_this_pass(int severity);
+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 void usage(void);
+
+static bool using_debug_info, opt_verbose_info;
+static const char *debug_format;
+
+bool tasm_compatible_mode = false;
+int pass0, passn;
+static int pass1, pass2;	/* XXX: Get rid of these, they are redundant */
+int globalrel = 0;
+int globalbnd = 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; */
+const struct ofmt *ofmt = &OF_DEFAULT;
+const struct ofmt_alias *ofmt_alias = NULL;
+const struct dfmt *dfmt;
+
+static FILE *error_file;        /* Where to write error messages */
+
+FILE *ofile = NULL;
+int optimizing = MAX_OPTIMIZE; /* number of optimization passes to take */
+static int cmd_sb = 16;    /* by default */
+
+iflag_t cpu;
+static iflag_t cmd_cpu;
+
+struct location location;
+bool in_absolute;                 /* Flag we are in ABSOLUTE seg */
+struct location absolute;         /* Segment/offset inside ABSOLUTE */
+
+static struct RAA *offsets;
+
+static struct SAA *forwrefs;    /* keep track of forward references */
+static const struct forwrefinfo *forwref;
+
+static const struct preproc_ops *preproc;
+
+#define OP_NORMAL           (1u << 0)
+#define OP_PREPROCESS       (1u << 1)
+#define OP_DEPEND           (1u << 2)
+
+static unsigned int 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;
+
+static bool want_usage;
+static bool terminate_after_phase;
+bool user_nolist = false;
+
+static char *quote_for_make(const char *str);
+
+static int64_t get_curr_offs(void)
+{
+    return in_absolute ? absolute.offset : raa_read(offsets, location.segment);
+}
+
+static void set_curr_offs(int64_t l_off)
+{
+        if (in_absolute)
+            absolute.offset = l_off;
+        else
+            offsets = raa_write(offsets, location.segment, l_off);
+}
+
+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 make_posix_time(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);
+        preproc->pre_define(temp);
+        strftime(temp, sizeof temp, "__DATE_NUM__=%Y%m%d", &lt);
+        preproc->pre_define(temp);
+        strftime(temp, sizeof temp, "__TIME__=\"%H:%M:%S\"", &lt);
+        preproc->pre_define(temp);
+        strftime(temp, sizeof temp, "__TIME_NUM__=%H%M%S", &lt);
+        preproc->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);
+        preproc->pre_define(temp);
+        strftime(temp, sizeof temp, "__UTC_DATE_NUM__=%Y%m%d", &gm);
+        preproc->pre_define(temp);
+        strftime(temp, sizeof temp, "__UTC_TIME__=\"%H:%M:%S\"", &gm);
+        preproc->pre_define(temp);
+        strftime(temp, sizeof temp, "__UTC_TIME_NUM__=%H%M%S", &gm);
+        preproc->pre_define(temp);
+    }
+
+    if (gm_p)
+        posix_time = make_posix_time(&gm);
+    else if (lt_p)
+        posix_time = make_posix_time(&lt);
+    else
+        posix_time = 0;
+
+    if (posix_time) {
+        snprintf(temp, sizeof temp, "__POSIX_TIME__=%"PRId64, posix_time);
+        preproc->pre_define(temp);
+    }
+}
+
+static void define_macros_late(void)
+{
+    char temp[128];
+
+    /*
+     * In case if output format is defined by alias
+     * we have to put shortname of the alias itself here
+     * otherwise ABI backward compatibility gets broken.
+     */
+    snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s",
+             ofmt_alias ? ofmt_alias->shortname : ofmt->shortname);
+    preproc->pre_define(temp);
+}
+
+static void emit_dependencies(StrList *list)
+{
+    FILE *deps;
+    int linepos, len;
+    StrList *l, *nl;
+
+    if (depend_file && strcmp(depend_file, "-")) {
+        deps = nasm_open_write(depend_file, NF_TEXT);
+        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) {
+        char *file = quote_for_make(l->str);
+        len = strlen(file);
+        if (linepos + len > 62 && linepos > 1) {
+            fprintf(deps, " \\\n ");
+            linepos = 1;
+        }
+        fprintf(deps, " %s", file);
+        linepos += len+1;
+        nasm_free(file);
+    }
+    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);
+
+    iflag_set(&cpu, IF_PLEVEL);
+    iflag_set(&cmd_cpu, IF_PLEVEL);
+
+    pass0 = 0;
+    want_usage = terminate_after_phase = false;
+    nasm_set_verror(nasm_verror_gnu);
+
+    error_file = stderr;
+
+    tolower_init();
+    src_init();
+
+    offsets = raa_init();
+    forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
+
+    preproc = &nasmpp;
+    operating_mode = OP_NORMAL;
+
+    parse_cmdline(argc, argv, 1);
+    if (terminate_after_phase) {
+        if (want_usage)
+            usage();
+        return 1;
+    }
+
+    /*
+     * Define some macros dependent on the runtime, but not
+     * on the command line (as those are scanned in cmdline pass 2.)
+     */
+    preproc->init();
+    define_macros_early();
+
+    parse_cmdline(argc, argv, 2);
+    if (terminate_after_phase) {
+        if (want_usage)
+            usage();
+        return 1;
+    }
+
+    /* Save away the default state of warnings */
+    memcpy(warning_state_init, warning_state, sizeof warning_state);
+
+    if (!using_debug_info) {
+        /* No debug info, redirect to the null backend (empty stubs) */
+        dfmt = &null_debug_form;
+    } else if (!debug_format) {
+        /* Default debug format for this backend */
+	dfmt = ofmt->default_dfmt;
+    } else {
+        dfmt = dfmt_find(ofmt, debug_format);
+        if (!dfmt) {
+            nasm_fatal(ERR_NOFILE | ERR_USAGE,
+                       "unrecognized debug format `%s' for"
+                       " output format `%s'",
+                       debug_format, ofmt->shortname);
+        }
+    }
+
+    if (ofmt->stdmac)
+        preproc->extra_stdmac(ofmt->stdmac);
+
+    /* 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 = quote_for_make(outname);
+
+    if (operating_mode & OP_DEPEND) {
+            char *line;
+
+            if (depend_missing_ok)
+                preproc->include_path(NULL);    /* "assume generated" */
+
+            preproc->reset(inname, 0, depend_ptr);
+            if (outname[0] == '\0')
+                ofmt->filename(inname, outname);
+            ofile = NULL;
+            while ((line = preproc->getline()))
+                nasm_free(line);
+            preproc->cleanup(0);
+    } else if (operating_mode & OP_PREPROCESS) {
+            char *line;
+            const char *file_name = NULL;
+            int32_t prior_linnum = 0;
+            int lineinc = 0;
+
+            if (*outname) {
+                ofile = nasm_open_write(outname, NF_TEXT);
+                if (!ofile)
+                    nasm_fatal(ERR_NOFILE,
+                                 "unable to open output file `%s'",
+                                 outname);
+            } else
+                ofile = NULL;
+
+            location.known = false;
+
+            /* pass = 1; */
+            preproc->reset(inname, 3, depend_ptr);
+
+	    /* Revert all warnings to the default state */
+	    memcpy(warning_state, warning_state_init, sizeof warning_state);
+
+            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);
+            }
+            preproc->cleanup(0);
+            if (ofile)
+                fclose(ofile);
+            if (ofile && terminate_after_phase)
+                remove(outname);
+            ofile = NULL;
+    }
+
+    if (operating_mode & 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 = nasm_open_write(outname, (ofmt->flags & OFMT_TEXT) ? NF_TEXT : NF_BINARY);
+        if (!ofile)
+            nasm_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->init();
+
+        assemble_file(inname, depend_ptr);
+
+        if (!terminate_after_phase) {
+            ofmt->cleanup();
+            cleanup_labels();
+            fflush(ofile);
+            if (ferror(ofile)) {
+                nasm_error(ERR_NONFATAL|ERR_NOFILE,
+                           "write error on output file `%s'", outname);
+                terminate_after_phase = true;
+            }
+        }
+
+        if (ofile) {
+            fclose(ofile);
+            if (terminate_after_phase)
+                remove(outname);
+            ofile = NULL;
+        }
+    }
+
+    if (depend_list && !terminate_after_phase)
+        emit_dependencies(depend_list);
+
+    if (want_usage)
+        usage();
+
+    raa_free(offsets);
+    saa_free(forwrefs);
+    eval_cleanup();
+    stdscan_cleanup();
+    src_free();
+
+    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_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;
+};
+
+enum text_options {
+    OPT_PREFIX,
+    OPT_POSTFIX
+};
+static const struct textargs textopts[] = {
+    {"prefix", OPT_PREFIX},
+    {"postfix", OPT_POSTFIX},
+    {NULL, 0}
+};
+
+static void show_version(void)
+{
+    printf("NASM version %s compiled on %s%s\n",
+           nasm_version, nasm_date, nasm_compile_options);
+    exit(0);
+}
+
+static bool stopoptions = false;
+static bool process_arg(char *p, char *q, int pass)
+{
+    char *param;
+    int i;
+    bool advance = false;
+
+    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':
+            if (pass == 1)
+                error_file = stdout;
+            break;
+
+        case 'o':       /* output file */
+            if (pass == 2)
+                copy_filename(outname, param);
+            break;
+
+        case 'f':       /* output format */
+            if (pass == 1) {
+                ofmt = ofmt_find(param, &ofmt_alias);
+                if (!ofmt) {
+                    nasm_fatal(ERR_NOFILE | ERR_USAGE,
+                               "unrecognised output format `%s' - "
+                               "use -hf for a list", param);
+                }
+            }
+            break;
+
+        case 'O':       /* Optimization level */
+            if (pass == 2) {
+                int opt;
+
+                if (!*param) {
+                    /* Naked -O == -Ox */
+                    optimizing = MAX_OPTIMIZE;
+                } 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 = MAX_OPTIMIZE;
+                            break;
+
+                        default:
+                            nasm_fatal(0,
+                                       "unknown optimization option -O%c\n",
+                                       *param);
+                            break;
+                        }
+                    }
+                    if (optimizing > MAX_OPTIMIZE)
+                        optimizing = MAX_OPTIMIZE;
+                }
+            }
+            break;
+
+        case 'p':       /* pre-include */
+        case 'P':
+            if (pass == 2)
+                preproc->pre_include(param);
+            break;
+
+        case 'd':       /* pre-define */
+        case 'D':
+            if (pass == 2)
+                preproc->pre_define(param);
+            break;
+
+        case 'u':       /* un-define */
+        case 'U':
+            if (pass == 2)
+                preproc->pre_undefine(param);
+            break;
+
+        case 'i':       /* include search path */
+        case 'I':
+            if (pass == 2)
+                preproc->include_path(param);
+            break;
+
+        case 'l':       /* listing file */
+            if (pass == 2)
+                copy_filename(listname, param);
+            break;
+
+        case 'Z':       /* error messages file */
+            if (pass == 1)
+                copy_filename(errname, param);
+            break;
+
+        case 'F':       /* specify debug format */
+            if (pass == 2) {
+                using_debug_info = true;
+                debug_format = param;
+            }
+            break;
+
+        case 'X':       /* specify error reporting format */
+            if (pass == 1) {
+                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_fatal(ERR_NOFILE | ERR_USAGE,
+                               "unrecognized error reporting format `%s'",
+                               param);
+            }
+            break;
+
+        case 'g':
+            if (pass == 2) {
+                using_debug_info = true;
+                if (p[2])
+                    debug_format = nasm_skip_spaces(p + 2);
+            }
+            break;
+
+        case 'h':
+            printf
+                ("usage: nasm [-@ response file] [-o outfile] [-f format] "
+                 "[-l listfile]\n"
+                 "            [options...] [--] filename\n"
+                 "    or nasm -v (or --v) for version info\n\n"
+                 "    -t          assemble in SciTech TASM compatible mode\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"
+                 "    -g          generate debugging information\n\n"
+                 "    -F format   select a debugging format\n\n"
+                 "    -gformat    same as -g -F format\n\n"
+                 "    -o outfile  write output to an outfile\n\n"
+                 "    -f format   select an output format\n\n"
+                 "    -l listfile write listing to a listfile\n\n"
+                 "    -I<path>    adds a pathname to the include file path\n");
+            printf
+                ("    -O<digit>   optimize branch offsets\n"
+                 "                -O0: No optimization\n"
+                 "                -O1: Minimal optimization\n"
+                 "                -Ox: Multipass optimization (default)\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"
+                 "    -w[+-]error[=foo] can be used to promote warnings to errors\n"
+                "    -h           show invocation summary and exit\n\n"
+                 "--prefix,--postfix\n"
+                 "                these options prepend or append the given string\n"
+                 "                to all extern and global variables\n"
+		 "\n"
+		 "Response files should contain command line parameters,\n"
+                 "one per line.\n"
+		 "\n"
+                 "Warnings for the -W/-w options:\n");
+            for (i = 0; i <= ERR_WARN_ALL; i++)
+                printf("    %-23s %s%s\n",
+                       warnings[i].name, warnings[i].help,
+		       i == ERR_WARN_ALL ? "\n" :
+                       warnings[i].enabled ? " (default on)" :
+		       " (default off)");
+            if (p[2] == 'f') {
+                printf("valid output formats for -f are"
+                       " (`*' denotes default):\n");
+                ofmt_list(ofmt, stdout);
+            } else {
+                printf("For 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':
+            if (pass == 2)
+                tasm_compatible_mode = true;
+            break;
+
+        case 'v':
+            show_version();
+            break;
+
+        case 'e':       /* preprocess only */
+        case 'E':
+            if (pass == 1)
+                operating_mode = OP_PREPROCESS;
+            break;
+
+        case 'a':       /* assemble only - don't preprocess */
+            if (pass == 1)
+                preproc = &preproc_nop;
+            break;
+
+        case 'w':
+        case 'W':
+            if (pass == 2) {
+                if (!set_warning_status(param)) {
+                    nasm_error(ERR_WARNING|ERR_NOFILE|ERR_WARN_UNK_WARNING,
+			       "unknown warning option: %s", param);
+                }
+            }
+        break;
+
+        case 'M':
+            if (pass == 2) {
+                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':
+                    operating_mode = OP_NORMAL;
+                    depend_file = q;
+                    advance = true;
+                    break;
+                case 'F':
+                    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;
+                }
+
+                if (!nasm_stricmp(p, "--v"))
+                    show_version();
+
+                if (!nasm_stricmp(p, "--version"))
+                    show_version();
+
+                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;
+                        }
+
+                        switch (s) {
+                        case OPT_PREFIX:
+                            if (pass == 2)
+                                strlcpy(lprefix, param, PREFIX_MAX);
+                            break;
+                        case OPT_POSTFIX:
+                            if (pass == 2)
+                                strlcpy(lpostfix, param, POSTFIX_MAX);
+                            break;
+                        default:
+                            nasm_panic(ERR_NOFILE,
+                                       "internal error");
+                            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 (pass == 2) {
+        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, int pass)
+{
+    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, pass);
+            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, pass))
+            *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, int pass)
+{
+    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, pass))
+            arg = NULL;
+    }
+    if (arg)
+        process_arg(arg, NULL, pass);
+}
+
+static void process_response_file(const char *file, int pass)
+{
+    char str[2048];
+    FILE *f = nasm_open_read(file, NF_TEXT);
+    if (!f) {
+        perror(file);
+        exit(-1);
+    }
+    while (fgets(str, sizeof str, f)) {
+        process_args(str, pass);
+    }
+    fclose(f);
+}
+
+static void parse_cmdline(int argc, char **argv, int pass)
+{
+    FILE *rfile;
+    char *envreal, *envcopy = NULL, *p;
+    int i;
+
+    *inname = *outname = *listname = *errname = '\0';
+
+    /* Initialize all the warnings to their default state */
+    for (i = 0; i < ERR_WARN_ALL; i++) {
+        warning_state_init[i] = warning_state[i] =
+	    warnings[i].enabled ? WARN_ST_ENABLED : 0;
+    }
+
+    /*
+     * First, process the NASMENV environment variable.
+     */
+    envreal = getenv("NASMENV");
+    if (envreal) {
+        envcopy = nasm_strdup(envreal);
+        process_args(envcopy, pass);
+        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, pass);
+            argc--;
+            argv++;
+        }
+        if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
+            p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
+            if (p) {
+                rfile = nasm_open_read(p, NF_TEXT);
+                if (rfile) {
+                    process_respfile(rfile, pass);
+                    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, pass);
+        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 (pass != 2)
+        return;
+
+    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_fatal(ERR_NOFILE | ERR_USAGE,
+                   "file `%s' is both input and output file",
+                   inname);
+
+    if (*errname) {
+        error_file = nasm_open_write(errname, NF_TEXT);
+        if (!error_file) {
+            error_file = stderr;        /* Revert to default! */
+            nasm_fatal(ERR_NOFILE | ERR_USAGE,
+                       "cannot open file `%s' for error messages",
+                       errname);
+        }
+    }
+}
+
+static void assemble_file(char *fname, StrList **depend_ptr)
+{
+    char *line;
+    insn output_ins;
+    int i;
+    int64_t offs;
+    int pass_max;
+    uint64_t prev_offset_changed;
+    unsigned int stall_count = 0; /* Make sure we make forward progress... */
+
+    if (cmd_sb == 32 && iflag_ffs(&cmd_cpu) < IF_386)
+	nasm_fatal(0, "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++) {
+        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 = cmd_sb;  /* set 'bits' to command line default */
+        cpu = cmd_cpu;
+        if (pass0 == 2) {
+	    lfmt->init(listname);
+        }
+        in_absolute = false;
+        global_offset_changed = 0;  /* set by redefine_label */
+        location.segment = ofmt->section(NULL, pass2, &globalbits);
+        if (passn > 1) {
+            saa_rewind(forwrefs);
+            forwref = saa_rstruct(forwrefs);
+            raa_free(offsets);
+            offsets = raa_init();
+        }
+        preproc->reset(fname, pass1, pass1 == 2 ? depend_ptr : NULL);
+
+	/* Revert all warnings to the default state */
+	memcpy(warning_state, warning_state_init, sizeof warning_state);
+
+        globallineno = 0;
+        if (passn == 1)
+            location.known = true;
+        location.offset = offs = get_curr_offs();
+
+        while ((line = preproc->getline())) {
+            globallineno++;
+
+            /*
+             * Here we parse our directives; this is not handled by the
+             * main parser.
+             */
+            if (process_directives(line))
+                goto end_of_line; /* Just do final cleanup */
+
+            /* Not a directive, or even something that starts with [ */
+
+            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, globalbits,
+                                          &output_ins);
+                    l *= output_ins.times;
+
+                    /* 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, globalbits, &output_ins);
+                    set_curr_offs(offs);
+
+                }
+            }               /* not an EQU */
+            cleanup_insn(&output_ins);
+
+        end_of_line:
+            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 > 997U) || (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);
+    lfmt->cleanup();
+    if (!terminate_after_phase && opt_verbose_info) {
+        /*  -On and -Ov switches */
+        fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
+    }
+}
+
+/**
+ * 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)
+{
+    const char *currentfile = NULL;
+    int32_t lineno = 0;
+
+    if (is_suppressed_warning(severity))
+        return;
+
+    if (!(severity & ERR_NOFILE))
+	src_get(&lineno, &currentfile);
+
+    if (!skip_this_pass(severity)) {
+	if (currentfile) {
+	    fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
+	} 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)
+{
+    const char *currentfile = NULL;
+    int32_t lineno = 0;
+
+    if (is_suppressed_warning(severity))
+        return;
+
+    if (!(severity & ERR_NOFILE))
+        src_get(&lineno, &currentfile);
+
+    if (!skip_this_pass(severity)) {
+        if (currentfile) {
+	    fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
+	} else {
+	    fputs("nasm: ", error_file);
+	}
+    }
+
+    nasm_verror_common(severity, fmt, ap);
+}
+
+/*
+ * check to see if this is a suppressable warning
+ */
+static inline bool is_valid_warning(int severity)
+{
+    /* Not a warning at all */
+    if ((severity & ERR_MASK) != ERR_WARNING)
+        return false;
+
+    return WARN_IDX(severity) < ERR_WARN_ALL;
+}
+
+/**
+ * check for suppressed 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)
+{
+    /* Might be a warning but suppresed explicitly */
+    if (is_valid_warning(severity))
+        return !(warning_state[WARN_IDX(severity)] & WARN_ST_ENABLED);
+    else
+        return false;
+}
+
+static bool warning_is_error(int severity)
+{
+    if (is_valid_warning(severity))
+        return !!(warning_state[WARN_IDX(severity)] & WARN_ST_ERROR);
+    else
+        return false;
+}
+
+static bool skip_this_pass(int severity)
+{
+  /* See if it's a pass-specific warning which should be skipped. */
+
+    if ((severity & ERR_MASK) > ERR_WARNING)
+	return false;
+
+    /*
+     * passn is 1 on the very first pass only.
+     * pass0 is 2 on the code-generation (final) pass only.
+     * These are the passes we care about in this case.
+     */
+    return (((severity & ERR_PASS1) && passn != 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 - 64, fmt, args);
+    if (is_valid_warning(severity) && WARN_IDX(severity) != ERR_WARN_OTHER) {
+        char *p = strchr(msg, '\0');
+	snprintf(p, 64, " [-w+%s]", warnings[WARN_IDX(severity)].name);
+    }
+
+    if (!skip_this_pass(severity))
+	fprintf(error_file, "%s%s\n", pfx, msg);
+
+    /* Are we recursing from error_list_macros? */
+    if (severity & ERR_PP_LISTMACRO)
+	return;
+
+    /*
+     * Don't suppress this with skip_this_pass(), or we don't get
+     * pass1 or preprocessor warnings in the list file
+     */
+    lfmt->error(severity, pfx, msg);
+
+    if (severity & ERR_USAGE)
+        want_usage = true;
+
+    preproc->error_list_macros(severity);
+
+    switch (severity & ERR_MASK) {
+    case ERR_DEBUG:
+        /* no further action, by definition */
+        break;
+    case ERR_WARNING:
+        /* Treat warnings as errors */
+        if (warning_is_error(severity))
+            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 */
+        if (ofile) {
+            fclose(ofile);
+            remove(outname);
+            ofile = NULL;
+        }
+        exit(3);
+        break;
+    }
+}
+
+static void usage(void)
+{
+    fputs("type `nasm -h' for help\n", error_file);
+}