coreboot/payloads/libpayload/libc/die.c
Gabe Black 59df109d56 libpayload: Add a new "die" function to fatally signal programming errors.
If a programming error is detected, die can be used to print a message and
stop execution similar to failing an assert. There's also a "die_if" function
which is conditional.

die functions, like asserts, should be used to trap programming errors and not
when the hardware does something wrong. If all code was written perfectly, no
die function would ever be called. In other words, it would be appropriate to
use die if a function was called with a value that was out of bounds or if
malloc failed. It wouldn't be appropriate if an external device doesn't
respond.

In the future, the die family of functions might print a stack trace or show
other debugging info.

BUG=None
TEST=Used the die_if function in other code and verified that it stops
execution, prints messages like printf, shows file, line, and function
information, and is correctly gated by its condition.
BRANCH=None

Change-Id: I653fc8cb0b4e459522f1b86f7fac280836d57916
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/178000
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
2013-11-27 01:46:00 +00:00

35 lines
1.1 KiB
C

/*
* Copyright 2013 Google Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but without any warranty; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <libpayload.h>
void die_work(const char *file, const char *func, const int line,
const char *fmt, ...)
{
va_list args;
printf("%s:%d %s(): ", file, line, func);
va_start(args, fmt);
vprintf(fmt, args);
va_end(args);
abort();
}