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/* idt.c - routines for constructing IDT fot the GDB stub */
/*
* Copyright (C) 2006 Lubomir Kundrak
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/machine/memory.h>
#include <grub/misc.h>
#include <grub/cpu/gdb.h>
#include <grub/gdb.h>
/* Converting CPU trap number to UNIX signal number as
described in System V ABI i386 Processor Supplement, 3-25. */
unsigned int
grub_gdb_trap2sig (int trap_no)
{
const int signals[] = {
SIGFPE, /* 0: Divide error fault */
SIGTRAP, /* 1: Single step trap fault */
SIGABRT, /* 2: # Nonmaskable interrupt */
SIGTRAP, /* 3: Breakpoint trap */
SIGSEGV, /* 4: Overflow trap */
SIGSEGV, /* 5: Bounds check fault */
SIGILL, /* 6: Invalid opcode fault */
SIGFPE, /* 7: No coprocessor fault */
SIGABRT, /* 8: # Double fault abort */
SIGSEGV, /* 9: Coprocessor overrun abort */
SIGSEGV, /* 10: Invalid TSS fault */
SIGSEGV, /* 11: Segment not present fault */
SIGSEGV, /* 12: Stack exception fault */
SIGSEGV, /* 13: General protection fault abort */
SIGSEGV, /* 14: Page fault */
SIGABRT, /* 15: (reserved) */
SIGFPE, /* 16: Coprocessor error fault */
SIGUSR1 /* other */
};
return signals[trap_no < 17 ? trap_no : 17];
}
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