asm/error.c

/* ----------------------------------------------------------------------- *
 *   
 *   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.
 *
 * ----------------------------------------------------------------------- */

/*
 * error.c - error message handling routines for the assembler
 */

#include "compiler.h"

#include <stdlib.h>

#include "nasmlib.h"
#include "error.h"

/*
 * Description of the suppressible warnings for the command line and
 * the [warning] directive.  Entry zero isn't an actual warning, but
 * it used for -w+error/-Werror.
 */
const struct warning 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},
    {"lock", "lock prefix on unlockable instructions", true},
    {"hle", "invalid hle prefixes", true},
    {"bnd", "invalid bnd prefixes", true},
    {"zext-reloc", "relocation zero-extended to match output format", true},
    {"ptr", "non-NASM keyword used in other assemblers", true},
    {"bad-pragma", "empty or malformed %pragma", false},
    {"unknown-pragma", "unknown %pragma facility or directive", false},
    {"not-my-pragma", "%pragma not applicable to this compilation", false}
};
bool warning_on[ERR_WARN_MAX+1];        /* Current state */
bool warning_on_global[ERR_WARN_MAX+1]; /* Command-line state, for reset */

vefunc nasm_verror;    /* Global error handling function */

void nasm_error(int severity, const char *fmt, ...)
{
    va_list ap;

    va_start(ap, fmt);
    nasm_verror(severity, fmt, ap);
    va_end(ap);
}

no_return nasm_fatal(int flags, const char *fmt, ...)
{
    va_list ap;

    va_start(ap, fmt);
    nasm_verror(flags | ERR_FATAL, fmt, ap);
    abort();			/* We should never get here */
}

no_return nasm_panic(int flags, const char *fmt, ...)
{
    va_list ap;

    va_start(ap, fmt);
    nasm_verror(flags | ERR_PANIC, fmt, ap);
    abort();			/* We should never get here */
}

no_return nasm_panic_from_macro(const char *file, int line)
{
    nasm_panic(ERR_NOFILE, "Internal error at %s:%d\n", file, line);
}

no_return nasm_assert_failed(const char *file, int line, const char *msg)
{
    nasm_fatal(0, "assertion %s failed at %s:%d", msg, file, line);
}