| /* 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]; |
| } |
| |
