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90 lines
3.1 KiB
C
90 lines
3.1 KiB
C
//----------------------------------------------------------------------------//
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// GNU GPL OS/K //
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// //
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// Desc: How NOT to panic 101 //
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// //
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// //
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// Copyright © 2018-2020 The OS/K Team //
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// //
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// This file is part of OS/K. //
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// //
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// OS/K is free software: you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation, either version 3 of the License, or //
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// any later version. //
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// //
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// OS/K is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY//without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
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//----------------------------------------------------------------------------//
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#include <lib/buf.h>
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#include <ke/proc.h>
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#include <io/vga.h>
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error_t vbprintf(Buffer_t *buf, const char *fmt, va_list ap);
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extern bool KeIdtIsInitialized;
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//
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// Failed assert() handler
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//
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noreturn void __assert_handler(const char *msg,
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const char *file,
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int line,
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const char *func)
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{
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KeDisableIRQs();
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KeStartPanic("In function '%s', from '%s' line %d\nAssertion failed:\n"
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"'%s'", func, file, line, msg);
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}
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//
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// Your best boy panic()
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// This is CPU local...
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//
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noreturn void KeStartPanic(const char *fmt, ...)
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{
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va_list ap;
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bprintf(BStdOut, "%C\nPANIC\n", VGA_COLOR_LIGHT_RED);
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KeDisableIRQs();
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KeCurProc = NULL;
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if (BStdOut == NULL) KeCrashSystem();
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// XXX
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// ExAttemptLock(&BStdOut->lock);
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if (fmt == NULL) {
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fmt = "(no message given)";
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}
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if (KeIsPanicking) {
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bprintf(BStdOut, "\nDouble panic!");
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KeHaltCPU();
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}
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KeIsPanicking = 1;
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// We don't check vbprintf's output
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// If it fails, what could we do anyway?
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va_start(ap, fmt);
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vbprintf(BStdOut, fmt, ap);
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va_end(ap);
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if (KeIdtIsInitialized)
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interrupt(0x3);
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BStdOut->flusher(BStdOut);
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KeHaltCPU();
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}
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