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75 lines
2.3 KiB
COBOL
75 lines
2.3 KiB
COBOL
#pypp 0
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// Iris: micro-kernel for a capability-based operating system.
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// panic.ccp: Stop running and try to notify the user of the problem.
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// Copyright 2009 Bas Wijnen <wijnen@debian.org>
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//
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// This program 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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// (at your option) any later version.
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//
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// This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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#define ARCH
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#include "kernel.hh"
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void dbg_log_char (unsigned ch):
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if !dbg_cap:
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return
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Capability::Context c
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for unsigned i = 0; i < 4; ++i:
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c.cap[i] = NULL
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c.copy[i] = false
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c.data[i] = 0
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c.data[0] = ch
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dbg_cap->invoke (&c)
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if dbg_cap->target->owner:
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current = dbg_cap->target->owner
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void dbg_log (char const *str):
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while *str:
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dbg_log_char (*str++)
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void dbg_log_num (unsigned num):
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char const *encode = "0123456789abcdef"
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for unsigned i = 0; i < 8; ++i:
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dbg_log_char (encode[(num >> (4 * (7 - i))) & 0xf])
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return
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void panic_impl (unsigned n, unsigned line, char const *name, char const *message):
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Thread *who = current
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// Stop all threads.
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while first_scheduled:
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first_scheduled->unrun ()
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for Receiver *r = first_alarm; r; r = r->next_alarm:
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if r->owner:
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r->owner->unrun ()
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for unsigned i = 0; i < 32; ++i:
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if arch_interrupt_receiver[i] && arch_interrupt_receiver[i]->owner:
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arch_interrupt_receiver[i]->owner->unrun ()
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// If a log capability is registered, run its owner.
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if dbg_cap && dbg_cap->target->owner:
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dbg_cap->target->owner->run ()
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// Use the (now running) log thread to display the message.
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dbg_log ("Panic: current = ")
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dbg_log_num ((unsigned)who)
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if who:
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dbg_log_char ('@')
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dbg_log_num ((unsigned)who->pc)
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dbg_log ("; ")
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dbg_log (name)
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dbg_log_char (':')
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dbg_log_num (line)
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dbg_log (": ")
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dbg_log (message)
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dbg_log_char ('/')
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dbg_log_num (n)
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dbg_log_char ('\n')
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// If no log capability is registered, the machine just hangs.
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