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