asm/error.c

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 1996-2017 The NASM Authors - All Rights Reserved
   4  *   See the file AUTHORS included with the NASM distribution for
   5  *   the specific copyright holders.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following
   9  *   conditions are met:
  10  *
  11  *   * Redistributions of source code must retain the above copyright
  12  *     notice, this list of conditions and the following disclaimer.
  13  *   * Redistributions in binary form must reproduce the above
  14  *     copyright notice, this list of conditions and the following
  15  *     disclaimer in the documentation and/or other materials provided
  16  *     with the distribution.
  17  *
  18  *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  19  *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  20  *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  21  *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  22  *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  23  *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24  *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25  *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  26  *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  29  *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  30  *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  * ----------------------------------------------------------------------- */
  33
  34 /*
  35  * error.c - error message handling routines for the assembler
  36  */
  37
  38 #include "compiler.h"
  39
  40 #include <stdlib.h>
  41
  42 #include "nasmlib.h"
  43 #include "error.h"
  44
  45 /*
  46  * Description of the suppressible warnings for the command line and
  47  * the [warning] directive.  Entry zero isn't an actual warning, but
  48  * it used for -w+error/-Werror.
  49  */
  50 const struct warning warnings[ERR_WARN_MAX+1] = {
  51     {"error", "treat warnings as errors", false},
  52     {"macro-params", "macro calls with wrong parameter count", true},
  53     {"macro-selfref", "cyclic macro references", false},
  54     {"macro-defaults", "macros with more default than optional parameters", true},
  55     {"orphan-labels", "labels alone on lines without trailing `:'", true},
  56     {"number-overflow", "numeric constant does not fit", true},
  57     {"gnu-elf-extensions", "using 8- or 16-bit relocation in ELF32, a GNU extension", false},
  58     {"float-overflow", "floating point overflow", true},
  59     {"float-denorm", "floating point denormal", false},
  60     {"float-underflow", "floating point underflow", false},
  61     {"float-toolong", "too many digits in floating-point number", true},
  62     {"user", "%warning directives", true},
  63     {"lock", "lock prefix on unlockable instructions", true},
  64     {"hle", "invalid hle prefixes", true},
  65     {"bnd", "invalid bnd prefixes", true},
  66     {"zext-reloc", "relocation zero-extended to match output format", true},
  67     {"ptr", "non-NASM keyword used in other assemblers", true},
  68 };
  69 bool warning_on[ERR_WARN_MAX+1];        /* Current state */
  70 bool warning_on_global[ERR_WARN_MAX+1]; /* Command-line state, for reset */
  71
  72 vefunc nasm_verror;    /* Global error handling function */
  73
  74 void nasm_error(int severity, const char *fmt, ...)
  75 {
  76     va_list ap;
  77
  78     va_start(ap, fmt);
  79     nasm_verror(severity, fmt, ap);
  80     va_end(ap);
  81 }
  82
  83 no_return nasm_fatal(int flags, const char *fmt, ...)
  84 {
  85     va_list ap;
  86
  87     va_start(ap, fmt);
  88     nasm_verror(flags | ERR_FATAL, fmt, ap);
  89     abort();                    /* We should never get here */
  90 }
  91
  92 no_return nasm_panic(int flags, const char *fmt, ...)
  93 {
  94     va_list ap;
  95
  96     va_start(ap, fmt);
  97     nasm_verror(flags | ERR_PANIC, fmt, ap);
  98     abort();                    /* We should never get here */
  99 }
 100
 101 no_return nasm_panic_from_macro(const char *file, int line)
 102 {
 103     nasm_panic(ERR_NOFILE, "Internal error at %s:%d\n", file, line);
 104 }
 105
 106 no_return nasm_assert_failed(const char *file, int line, const char *msg)
 107 {
 108     nasm_fatal(0, "assertion %s failed at %s:%d", msg, file, line);
 109 }