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/* ----------------------------------------------------------------------- *
*
* Copyright 1996-2018 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.
*/
#define on (WARN_ST_ENABLED)
#define off 0
#define err (WARN_ST_ENABLED|WARN_ST_ERROR)
const struct warning warnings[WARN_ALL+1] = {
{NULL, NULL, on}, /* must be on - used for unconditional enable */
{"macro-params", "macro calls with wrong parameter count", on},
{"macro-selfref", "cyclic macro references", off},
{"macro-defaults", "macros with more default than optional parameters", on},
{"orphan-labels", "labels alone on lines without trailing `:'", on},
{"number-overflow", "numeric constant does not fit", on},
{"gnu-elf-extensions", "using 8- or 16-bit relocation in ELF32, a GNU extension", off},
{"float-overflow", "floating point overflow", on},
{"float-denorm", "floating point denormal", off},
{"float-underflow", "floating point underflow", off},
{"float-toolong", "too many digits in floating-point number", on},
{"user", "%warning directives", on},
{"lock", "lock prefix on unlockable instructions", on},
{"hle", "invalid hle prefixes", on},
{"bnd", "invalid bnd prefixes", on},
{"zext-reloc", "relocation zero-extended to match output format", on},
{"ptr", "non-NASM keyword used in other assemblers", on},
{"bad-pragma", "empty or malformed %pragma", off},
{"unknown-pragma", "unknown %pragma facility or directive", off},
{"not-my-pragma", "%pragma not applicable to this compilation", off},
{"unknown-warning", "unknown warning in -W/-w or warning directive", off},
{"negative-rep", "regative %rep count", on},
{"phase", "phase error during stabilization", off},
{"label-redef", "label redefined to an identical value", off},
{"label-redef-late", "label (re)defined during code generation", err},
/* THESE ENTRIES SHOULD COME LAST */
{"other", "any warning not specifially mentioned above", on},
{"all", "all possible warnings", off}
};
uint8_t warning_state[WARN_ALL];/* Current state */
uint8_t warning_state_init[WARN_ALL]; /* Command-line state, for reset */
/* Global error handling function */
vefunc nasm_verror;
/* Common function body */
#define nasm_do_error(s) \
va_list ap; \
va_start(ap, fmt); \
nasm_verror((s), fmt, ap); \
va_end(ap);
void nasm_error(errflags severity, const char *fmt, ...)
{
nasm_do_error(severity);
}
#define nasm_err_helpers(_type, _name, _sev) \
_type nasm_ ## _name ## f (errflags flags, const char *fmt, ...) \
{ \
nasm_do_error((_sev)|flags); \
if (_sev >= ERR_FATAL) \
abort(); \
} \
_type nasm_ ## _name (const char *fmt, ...) \
{ \
nasm_do_error(_sev); \
if (_sev >= ERR_FATAL) \
abort(); \
}
nasm_err_helpers(void, debug, ERR_DEBUG)
nasm_err_helpers(void, note, ERR_NOTE)
nasm_err_helpers(void, warn, ERR_WARNING)
nasm_err_helpers(void, nonfatal, ERR_NONFATAL)
nasm_err_helpers(fatal_func, fatal, ERR_FATAL)
nasm_err_helpers(fatal_func, panic, ERR_PANIC)
fatal_func nasm_panic_from_macro(const char *file, int line)
{
nasm_panic("internal error at %s:%d\n", file, line);
}
fatal_func nasm_assert_failed(const char *file, int line, const char *msg)
{
nasm_panic("assertion %s failed at %s:%d", msg, file, line);
}
/*
* This is called when processing a -w or -W option, or a warning directive.
* Returns on if if the action was successful.
*/
bool set_warning_status(const char *value)
{
enum warn_action { WID_OFF, WID_ON, WID_RESET };
enum warn_action action;
bool ok = false;
uint8_t mask;
int i;
value = nasm_skip_spaces(value);
switch (*value) {
case '-':
action = WID_OFF;
value++;
break;
case '+':
action = WID_ON;
value++;
break;
case '*':
action = WID_RESET;
value++;
break;
case 'N':
case 'n':
if (!nasm_strnicmp(value, "no-", 3)) {
action = WID_OFF;
value += 3;
break;
} else if (!nasm_stricmp(value, "none")) {
action = WID_OFF;
value = NULL;
break;
}
/* else fall through */
default:
action = WID_ON;
break;
}
mask = WARN_ST_ENABLED;
if (value && !nasm_strnicmp(value, "error", 5)) {
switch (value[5]) {
case '=':
mask = WARN_ST_ERROR;
value += 6;
break;
case '\0':
mask = WARN_ST_ERROR;
value = NULL;
break;
default:
/* Just an accidental prefix? */
break;
}
}
if (value && !nasm_stricmp(value, "all"))
value = NULL;
/* This is inefficient, but it shouldn't matter... */
for (i = 0; i < WARN_ALL; i++) {
if (!value || !nasm_stricmp(value, warnings[i].name)) {
ok = true; /* At least one action taken */
switch (action) {
case WID_OFF:
warning_state[i] &= ~mask;
break;
case WID_ON:
warning_state[i] |= mask;
break;
case WID_RESET:
warning_state[i] &= ~mask;
warning_state[i] |= warning_state_init[i] & mask;
break;
}
}
}
return ok;
}
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