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os-k/kaleid/kernel/ke/panic.c

87 lines
3.1 KiB
C

//----------------------------------------------------------------------------//
// GNU GPL OS/K //
// //
// Desc: How NOT to panic 101 //
// //
// //
// Copyright © 2018-2019 The OS/K Team //
// //
// This file is part of OS/K. //
// //
// OS/K 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 3 of the License, or //
// any later version. //
// //
// OS/K 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 OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------//
#include <kernel/term.h>
#include <kernel/panic.h>
//
// Failed assert() handler
//
noreturn void __assert_handler(const char *msg,
const char *file,
int line,
const char *func)
{
DisableIRQs();
(void)file; (void)line; (void)func;
StartPanic("cpu%d: In function '%s', from %s line %s - assert() failed: '%s'",
_GetCurCPU(), func, file, line, msg);
}
//
// Your best boy panic()
// This is CPU local...
//
noreturn void StartPanic(const char *fmt, ...)
{
va_list ap;
DisableIRQs();
if (GetCurProc()) _SetCurProc(NULL);
if (GetStdOut() == NULL) CrashSystem();
GetStdOut()->ClearTermUnlocked(GetStdOut());
if (fmt == NULL) {
fmt = "(no message given)";
}
if (GetPanicStr()) {
GetStdOut()->PrintOnTermUnlocked(GetStdOut(), "\ndouble panic!");
HaltCPU();
}
va_start(ap, fmt);
vsnprintf(GetPanicStr(), sizeof GetPanicStr(), fmt, ap);
va_end(ap);
GetStdOut()->PrintOnTermUnlocked(GetStdOut(), "\npanic!\n\n");
GetStdOut()->PrintOnTermUnlocked(GetStdOut(), GetPanicStr());
HaltCPU();
}
//
// Oh well
//
noreturn void CrashSystem(void)
{
DisableIRQs();
HaltCPU();
}