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/*
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* gdb server stub
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*
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* Copyright (c) 2003-2005 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h" |
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#include "qemu-common.h" |
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#ifdef CONFIG_USER_ONLY
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <stdarg.h> |
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#include <string.h> |
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#include <errno.h> |
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#include <unistd.h> |
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#include <fcntl.h> |
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#include "qemu.h" |
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#else
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#include "monitor.h" |
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#include "qemu-char.h" |
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#include "sysemu.h" |
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#include "gdbstub.h" |
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#endif
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#define MAX_PACKET_LENGTH 4096 |
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#include "qemu_socket.h" |
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#include "kvm.h" |
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enum {
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GDB_SIGNAL_0 = 0,
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GDB_SIGNAL_INT = 2,
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GDB_SIGNAL_TRAP = 5,
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GDB_SIGNAL_UNKNOWN = 143
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}; |
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#ifdef CONFIG_USER_ONLY
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/* Map target signal numbers to GDB protocol signal numbers and vice
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* versa. For user emulation's currently supported systems, we can
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* assume most signals are defined.
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*/
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static int gdb_signal_table[] = { |
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0,
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TARGET_SIGHUP, |
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TARGET_SIGINT, |
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TARGET_SIGQUIT, |
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TARGET_SIGILL, |
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TARGET_SIGTRAP, |
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TARGET_SIGABRT, |
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-1, /* SIGEMT */ |
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TARGET_SIGFPE, |
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TARGET_SIGKILL, |
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TARGET_SIGBUS, |
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TARGET_SIGSEGV, |
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TARGET_SIGSYS, |
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TARGET_SIGPIPE, |
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TARGET_SIGALRM, |
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TARGET_SIGTERM, |
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TARGET_SIGURG, |
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TARGET_SIGSTOP, |
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TARGET_SIGTSTP, |
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TARGET_SIGCONT, |
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TARGET_SIGCHLD, |
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TARGET_SIGTTIN, |
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TARGET_SIGTTOU, |
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TARGET_SIGIO, |
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TARGET_SIGXCPU, |
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TARGET_SIGXFSZ, |
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TARGET_SIGVTALRM, |
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TARGET_SIGPROF, |
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TARGET_SIGWINCH, |
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-1, /* SIGLOST */ |
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TARGET_SIGUSR1, |
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TARGET_SIGUSR2, |
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#ifdef TARGET_SIGPWR
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TARGET_SIGPWR, |
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#else
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-1,
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#endif
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-1, /* SIGPOLL */ |
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-1,
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-1,
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-1,
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-1,
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-1,
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-1,
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-1,
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-1,
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-1,
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-1,
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-1,
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#ifdef __SIGRTMIN
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__SIGRTMIN + 1,
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__SIGRTMIN + 2,
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__SIGRTMIN + 3,
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__SIGRTMIN + 4,
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__SIGRTMIN + 5,
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__SIGRTMIN + 6,
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__SIGRTMIN + 7,
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__SIGRTMIN + 8,
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__SIGRTMIN + 9,
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__SIGRTMIN + 10,
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__SIGRTMIN + 11,
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__SIGRTMIN + 12,
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__SIGRTMIN + 13,
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__SIGRTMIN + 14,
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__SIGRTMIN + 15,
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__SIGRTMIN + 16,
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__SIGRTMIN + 17,
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__SIGRTMIN + 18,
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__SIGRTMIN + 19,
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__SIGRTMIN + 20,
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__SIGRTMIN + 21,
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__SIGRTMIN + 22,
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__SIGRTMIN + 23,
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__SIGRTMIN + 24,
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__SIGRTMIN + 25,
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__SIGRTMIN + 26,
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__SIGRTMIN + 27,
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__SIGRTMIN + 28,
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__SIGRTMIN + 29,
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__SIGRTMIN + 30,
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__SIGRTMIN + 31,
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-1, /* SIGCANCEL */ |
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__SIGRTMIN, |
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__SIGRTMIN + 32,
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__SIGRTMIN + 33,
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__SIGRTMIN + 34,
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__SIGRTMIN + 35,
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__SIGRTMIN + 36,
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__SIGRTMIN + 37,
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__SIGRTMIN + 38,
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__SIGRTMIN + 39,
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__SIGRTMIN + 40,
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__SIGRTMIN + 41,
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__SIGRTMIN + 42,
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__SIGRTMIN + 43,
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__SIGRTMIN + 44,
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__SIGRTMIN + 45,
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__SIGRTMIN + 46,
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__SIGRTMIN + 47,
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__SIGRTMIN + 48,
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__SIGRTMIN + 49,
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__SIGRTMIN + 50,
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__SIGRTMIN + 51,
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__SIGRTMIN + 52,
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__SIGRTMIN + 53,
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__SIGRTMIN + 54,
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__SIGRTMIN + 55,
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__SIGRTMIN + 56,
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__SIGRTMIN + 57,
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__SIGRTMIN + 58,
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__SIGRTMIN + 59,
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__SIGRTMIN + 60,
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__SIGRTMIN + 61,
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__SIGRTMIN + 62,
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__SIGRTMIN + 63,
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__SIGRTMIN + 64,
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__SIGRTMIN + 65,
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__SIGRTMIN + 66,
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__SIGRTMIN + 67,
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__SIGRTMIN + 68,
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__SIGRTMIN + 69,
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__SIGRTMIN + 70,
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__SIGRTMIN + 71,
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__SIGRTMIN + 72,
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__SIGRTMIN + 73,
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__SIGRTMIN + 74,
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__SIGRTMIN + 75,
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__SIGRTMIN + 76,
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__SIGRTMIN + 77,
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__SIGRTMIN + 78,
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__SIGRTMIN + 79,
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__SIGRTMIN + 80,
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__SIGRTMIN + 81,
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__SIGRTMIN + 82,
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__SIGRTMIN + 83,
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__SIGRTMIN + 84,
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__SIGRTMIN + 85,
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__SIGRTMIN + 86,
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__SIGRTMIN + 87,
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__SIGRTMIN + 88,
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__SIGRTMIN + 89,
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__SIGRTMIN + 90,
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__SIGRTMIN + 91,
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__SIGRTMIN + 92,
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__SIGRTMIN + 93,
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__SIGRTMIN + 94,
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__SIGRTMIN + 95,
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-1, /* SIGINFO */ |
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-1, /* UNKNOWN */ |
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-1, /* DEFAULT */ |
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-1,
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-1,
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-1,
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-1,
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-1,
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-1
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#endif
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}; |
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#else
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/* In system mode we only need SIGINT and SIGTRAP; other signals
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are not yet supported. */
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enum {
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TARGET_SIGINT = 2,
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TARGET_SIGTRAP = 5
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}; |
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static int gdb_signal_table[] = { |
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-1,
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-1,
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TARGET_SIGINT, |
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-1,
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-1,
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TARGET_SIGTRAP |
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}; |
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#endif
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#ifdef CONFIG_USER_ONLY
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static int target_signal_to_gdb (int sig) |
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{ |
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int i;
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for (i = 0; i < ARRAY_SIZE (gdb_signal_table); i++) |
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if (gdb_signal_table[i] == sig)
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return i;
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return GDB_SIGNAL_UNKNOWN;
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} |
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#endif
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static int gdb_signal_to_target (int sig) |
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{ |
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if (sig < ARRAY_SIZE (gdb_signal_table))
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return gdb_signal_table[sig];
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else
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return -1; |
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} |
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//#define DEBUG_GDB
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typedef struct GDBRegisterState { |
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int base_reg;
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int num_regs;
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gdb_reg_cb get_reg; |
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gdb_reg_cb set_reg; |
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const char *xml; |
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struct GDBRegisterState *next;
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} GDBRegisterState; |
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enum RSState {
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RS_INACTIVE, |
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RS_IDLE, |
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RS_GETLINE, |
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RS_CHKSUM1, |
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RS_CHKSUM2, |
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RS_SYSCALL, |
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}; |
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typedef struct GDBState { |
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CPUState *c_cpu; /* current CPU for step/continue ops */
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CPUState *g_cpu; /* current CPU for other ops */
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CPUState *query_cpu; /* for q{f|s}ThreadInfo */
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enum RSState state; /* parsing state */ |
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char line_buf[MAX_PACKET_LENGTH];
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int line_buf_index;
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int line_csum;
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uint8_t last_packet[MAX_PACKET_LENGTH + 4];
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int last_packet_len;
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int signal;
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#ifdef CONFIG_USER_ONLY
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int fd;
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int running_state;
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#else
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CharDriverState *chr; |
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CharDriverState *mon_chr; |
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#endif
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} GDBState; |
293 |
|
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/* By default use no IRQs and no timers while single stepping so as to
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* make single stepping like an ICE HW step.
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*/
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static int sstep_flags = SSTEP_ENABLE|SSTEP_NOIRQ|SSTEP_NOTIMER; |
298 |
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static GDBState *gdbserver_state;
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/* This is an ugly hack to cope with both new and old gdb.
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If gdb sends qXfer:features:read then assume we're talking to a newish
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gdb that understands target descriptions. */
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static int gdb_has_xml; |
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#ifdef CONFIG_USER_ONLY
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/* XXX: This is not thread safe. Do we care? */
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static int gdbserver_fd = -1; |
309 |
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static int get_char(GDBState *s) |
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{ |
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uint8_t ch; |
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int ret;
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for(;;) {
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ret = recv(s->fd, &ch, 1, 0); |
317 |
if (ret < 0) { |
318 |
if (errno == ECONNRESET)
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s->fd = -1;
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if (errno != EINTR && errno != EAGAIN)
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return -1; |
322 |
} else if (ret == 0) { |
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close(s->fd); |
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s->fd = -1;
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return -1; |
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} else {
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break;
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} |
329 |
} |
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return ch;
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} |
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#endif
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static gdb_syscall_complete_cb gdb_current_syscall_cb;
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static enum { |
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GDB_SYS_UNKNOWN, |
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GDB_SYS_ENABLED, |
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GDB_SYS_DISABLED, |
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} gdb_syscall_mode; |
341 |
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/* If gdb is connected when the first semihosting syscall occurs then use
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remote gdb syscalls. Otherwise use native file IO. */
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int use_gdb_syscalls(void) |
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{ |
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if (gdb_syscall_mode == GDB_SYS_UNKNOWN) {
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gdb_syscall_mode = (gdbserver_state ? GDB_SYS_ENABLED |
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: GDB_SYS_DISABLED); |
349 |
} |
350 |
return gdb_syscall_mode == GDB_SYS_ENABLED;
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} |
352 |
|
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/* Resume execution. */
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static inline void gdb_continue(GDBState *s) |
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{ |
356 |
#ifdef CONFIG_USER_ONLY
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s->running_state = 1;
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#else
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vm_start(); |
360 |
#endif
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} |
362 |
|
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static void put_buffer(GDBState *s, const uint8_t *buf, int len) |
364 |
{ |
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#ifdef CONFIG_USER_ONLY
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int ret;
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|
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while (len > 0) { |
369 |
ret = send(s->fd, buf, len, 0);
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if (ret < 0) { |
371 |
if (errno != EINTR && errno != EAGAIN)
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return;
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} else {
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buf += ret; |
375 |
len -= ret; |
376 |
} |
377 |
} |
378 |
#else
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qemu_chr_write(s->chr, buf, len); |
380 |
#endif
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} |
382 |
|
383 |
static inline int fromhex(int v) |
384 |
{ |
385 |
if (v >= '0' && v <= '9') |
386 |
return v - '0'; |
387 |
else if (v >= 'A' && v <= 'F') |
388 |
return v - 'A' + 10; |
389 |
else if (v >= 'a' && v <= 'f') |
390 |
return v - 'a' + 10; |
391 |
else
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return 0; |
393 |
} |
394 |
|
395 |
static inline int tohex(int v) |
396 |
{ |
397 |
if (v < 10) |
398 |
return v + '0'; |
399 |
else
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return v - 10 + 'a'; |
401 |
} |
402 |
|
403 |
static void memtohex(char *buf, const uint8_t *mem, int len) |
404 |
{ |
405 |
int i, c;
|
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char *q;
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407 |
q = buf; |
408 |
for(i = 0; i < len; i++) { |
409 |
c = mem[i]; |
410 |
*q++ = tohex(c >> 4);
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411 |
*q++ = tohex(c & 0xf);
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412 |
} |
413 |
*q = '\0';
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414 |
} |
415 |
|
416 |
static void hextomem(uint8_t *mem, const char *buf, int len) |
417 |
{ |
418 |
int i;
|
419 |
|
420 |
for(i = 0; i < len; i++) { |
421 |
mem[i] = (fromhex(buf[0]) << 4) | fromhex(buf[1]); |
422 |
buf += 2;
|
423 |
} |
424 |
} |
425 |
|
426 |
/* return -1 if error, 0 if OK */
|
427 |
static int put_packet_binary(GDBState *s, const char *buf, int len) |
428 |
{ |
429 |
int csum, i;
|
430 |
uint8_t *p; |
431 |
|
432 |
for(;;) {
|
433 |
p = s->last_packet; |
434 |
*(p++) = '$';
|
435 |
memcpy(p, buf, len); |
436 |
p += len; |
437 |
csum = 0;
|
438 |
for(i = 0; i < len; i++) { |
439 |
csum += buf[i]; |
440 |
} |
441 |
*(p++) = '#';
|
442 |
*(p++) = tohex((csum >> 4) & 0xf); |
443 |
*(p++) = tohex((csum) & 0xf);
|
444 |
|
445 |
s->last_packet_len = p - s->last_packet; |
446 |
put_buffer(s, (uint8_t *)s->last_packet, s->last_packet_len); |
447 |
|
448 |
#ifdef CONFIG_USER_ONLY
|
449 |
i = get_char(s); |
450 |
if (i < 0) |
451 |
return -1; |
452 |
if (i == '+') |
453 |
break;
|
454 |
#else
|
455 |
break;
|
456 |
#endif
|
457 |
} |
458 |
return 0; |
459 |
} |
460 |
|
461 |
/* return -1 if error, 0 if OK */
|
462 |
static int put_packet(GDBState *s, const char *buf) |
463 |
{ |
464 |
#ifdef DEBUG_GDB
|
465 |
printf("reply='%s'\n", buf);
|
466 |
#endif
|
467 |
|
468 |
return put_packet_binary(s, buf, strlen(buf));
|
469 |
} |
470 |
|
471 |
/* The GDB remote protocol transfers values in target byte order. This means
|
472 |
we can use the raw memory access routines to access the value buffer.
|
473 |
Conveniently, these also handle the case where the buffer is mis-aligned.
|
474 |
*/
|
475 |
#define GET_REG8(val) do { \ |
476 |
stb_p(mem_buf, val); \ |
477 |
return 1; \ |
478 |
} while(0) |
479 |
#define GET_REG16(val) do { \ |
480 |
stw_p(mem_buf, val); \ |
481 |
return 2; \ |
482 |
} while(0) |
483 |
#define GET_REG32(val) do { \ |
484 |
stl_p(mem_buf, val); \ |
485 |
return 4; \ |
486 |
} while(0) |
487 |
#define GET_REG64(val) do { \ |
488 |
stq_p(mem_buf, val); \ |
489 |
return 8; \ |
490 |
} while(0) |
491 |
|
492 |
#if TARGET_LONG_BITS == 64 |
493 |
#define GET_REGL(val) GET_REG64(val)
|
494 |
#define ldtul_p(addr) ldq_p(addr)
|
495 |
#else
|
496 |
#define GET_REGL(val) GET_REG32(val)
|
497 |
#define ldtul_p(addr) ldl_p(addr)
|
498 |
#endif
|
499 |
|
500 |
#if defined(TARGET_I386)
|
501 |
|
502 |
#ifdef TARGET_X86_64
|
503 |
static const int gpr_map[16] = { |
504 |
R_EAX, R_EBX, R_ECX, R_EDX, R_ESI, R_EDI, R_EBP, R_ESP, |
505 |
8, 9, 10, 11, 12, 13, 14, 15 |
506 |
}; |
507 |
#else
|
508 |
static const int gpr_map[8] = {0, 1, 2, 3, 4, 5, 6, 7}; |
509 |
#endif
|
510 |
|
511 |
#define NUM_CORE_REGS (CPU_NB_REGS * 2 + 25) |
512 |
|
513 |
#define IDX_IP_REG CPU_NB_REGS
|
514 |
#define IDX_FLAGS_REG (IDX_IP_REG + 1) |
515 |
#define IDX_SEG_REGS (IDX_FLAGS_REG + 1) |
516 |
#define IDX_FP_REGS (IDX_SEG_REGS + 6) |
517 |
#define IDX_XMM_REGS (IDX_FP_REGS + 16) |
518 |
#define IDX_MXCSR_REG (IDX_XMM_REGS + CPU_NB_REGS)
|
519 |
|
520 |
static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) |
521 |
{ |
522 |
if (n < CPU_NB_REGS) {
|
523 |
GET_REGL(env->regs[gpr_map[n]]); |
524 |
} else if (n >= IDX_FP_REGS && n < IDX_FP_REGS + 8) { |
525 |
#ifdef USE_X86LDOUBLE
|
526 |
/* FIXME: byteswap float values - after fixing fpregs layout. */
|
527 |
memcpy(mem_buf, &env->fpregs[n - IDX_FP_REGS], 10);
|
528 |
#else
|
529 |
memset(mem_buf, 0, 10); |
530 |
#endif
|
531 |
return 10; |
532 |
} else if (n >= IDX_XMM_REGS && n < IDX_XMM_REGS + CPU_NB_REGS) { |
533 |
n -= IDX_XMM_REGS; |
534 |
stq_p(mem_buf, env->xmm_regs[n].XMM_Q(0));
|
535 |
stq_p(mem_buf + 8, env->xmm_regs[n].XMM_Q(1)); |
536 |
return 16; |
537 |
} else {
|
538 |
switch (n) {
|
539 |
case IDX_IP_REG: GET_REGL(env->eip);
|
540 |
case IDX_FLAGS_REG: GET_REG32(env->eflags);
|
541 |
|
542 |
case IDX_SEG_REGS: GET_REG32(env->segs[R_CS].selector);
|
543 |
case IDX_SEG_REGS + 1: GET_REG32(env->segs[R_SS].selector); |
544 |
case IDX_SEG_REGS + 2: GET_REG32(env->segs[R_DS].selector); |
545 |
case IDX_SEG_REGS + 3: GET_REG32(env->segs[R_ES].selector); |
546 |
case IDX_SEG_REGS + 4: GET_REG32(env->segs[R_FS].selector); |
547 |
case IDX_SEG_REGS + 5: GET_REG32(env->segs[R_GS].selector); |
548 |
|
549 |
case IDX_FP_REGS + 8: GET_REG32(env->fpuc); |
550 |
case IDX_FP_REGS + 9: GET_REG32((env->fpus & ~0x3800) | |
551 |
(env->fpstt & 0x7) << 11); |
552 |
case IDX_FP_REGS + 10: GET_REG32(0); /* ftag */ |
553 |
case IDX_FP_REGS + 11: GET_REG32(0); /* fiseg */ |
554 |
case IDX_FP_REGS + 12: GET_REG32(0); /* fioff */ |
555 |
case IDX_FP_REGS + 13: GET_REG32(0); /* foseg */ |
556 |
case IDX_FP_REGS + 14: GET_REG32(0); /* fooff */ |
557 |
case IDX_FP_REGS + 15: GET_REG32(0); /* fop */ |
558 |
|
559 |
case IDX_MXCSR_REG: GET_REG32(env->mxcsr);
|
560 |
} |
561 |
} |
562 |
return 0; |
563 |
} |
564 |
|
565 |
static int cpu_x86_gdb_load_seg(CPUState *env, int sreg, uint8_t *mem_buf) |
566 |
{ |
567 |
uint16_t selector = ldl_p(mem_buf); |
568 |
|
569 |
if (selector != env->segs[sreg].selector) {
|
570 |
#if defined(CONFIG_USER_ONLY)
|
571 |
cpu_x86_load_seg(env, sreg, selector); |
572 |
#else
|
573 |
unsigned int limit, flags; |
574 |
target_ulong base; |
575 |
|
576 |
if (!(env->cr[0] & CR0_PE_MASK) || (env->eflags & VM_MASK)) { |
577 |
base = selector << 4;
|
578 |
limit = 0xffff;
|
579 |
flags = 0;
|
580 |
} else {
|
581 |
if (!cpu_x86_get_descr_debug(env, selector, &base, &limit, &flags))
|
582 |
return 4; |
583 |
} |
584 |
cpu_x86_load_seg_cache(env, sreg, selector, base, limit, flags); |
585 |
#endif
|
586 |
} |
587 |
return 4; |
588 |
} |
589 |
|
590 |
static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) |
591 |
{ |
592 |
uint32_t tmp; |
593 |
|
594 |
if (n < CPU_NB_REGS) {
|
595 |
env->regs[gpr_map[n]] = ldtul_p(mem_buf); |
596 |
return sizeof(target_ulong); |
597 |
} else if (n >= IDX_FP_REGS && n < IDX_FP_REGS + 8) { |
598 |
#ifdef USE_X86LDOUBLE
|
599 |
/* FIXME: byteswap float values - after fixing fpregs layout. */
|
600 |
memcpy(&env->fpregs[n - IDX_FP_REGS], mem_buf, 10);
|
601 |
#endif
|
602 |
return 10; |
603 |
} else if (n >= IDX_XMM_REGS && n < IDX_XMM_REGS + CPU_NB_REGS) { |
604 |
n -= IDX_XMM_REGS; |
605 |
env->xmm_regs[n].XMM_Q(0) = ldq_p(mem_buf);
|
606 |
env->xmm_regs[n].XMM_Q(1) = ldq_p(mem_buf + 8); |
607 |
return 16; |
608 |
} else {
|
609 |
switch (n) {
|
610 |
case IDX_IP_REG:
|
611 |
env->eip = ldtul_p(mem_buf); |
612 |
return sizeof(target_ulong); |
613 |
case IDX_FLAGS_REG:
|
614 |
env->eflags = ldl_p(mem_buf); |
615 |
return 4; |
616 |
|
617 |
case IDX_SEG_REGS: return cpu_x86_gdb_load_seg(env, R_CS, mem_buf); |
618 |
case IDX_SEG_REGS + 1: return cpu_x86_gdb_load_seg(env, R_SS, mem_buf); |
619 |
case IDX_SEG_REGS + 2: return cpu_x86_gdb_load_seg(env, R_DS, mem_buf); |
620 |
case IDX_SEG_REGS + 3: return cpu_x86_gdb_load_seg(env, R_ES, mem_buf); |
621 |
case IDX_SEG_REGS + 4: return cpu_x86_gdb_load_seg(env, R_FS, mem_buf); |
622 |
case IDX_SEG_REGS + 5: return cpu_x86_gdb_load_seg(env, R_GS, mem_buf); |
623 |
|
624 |
case IDX_FP_REGS + 8: |
625 |
env->fpuc = ldl_p(mem_buf); |
626 |
return 4; |
627 |
case IDX_FP_REGS + 9: |
628 |
tmp = ldl_p(mem_buf); |
629 |
env->fpstt = (tmp >> 11) & 7; |
630 |
env->fpus = tmp & ~0x3800;
|
631 |
return 4; |
632 |
case IDX_FP_REGS + 10: /* ftag */ return 4; |
633 |
case IDX_FP_REGS + 11: /* fiseg */ return 4; |
634 |
case IDX_FP_REGS + 12: /* fioff */ return 4; |
635 |
case IDX_FP_REGS + 13: /* foseg */ return 4; |
636 |
case IDX_FP_REGS + 14: /* fooff */ return 4; |
637 |
case IDX_FP_REGS + 15: /* fop */ return 4; |
638 |
|
639 |
case IDX_MXCSR_REG:
|
640 |
env->mxcsr = ldl_p(mem_buf); |
641 |
return 4; |
642 |
} |
643 |
} |
644 |
/* Unrecognised register. */
|
645 |
return 0; |
646 |
} |
647 |
|
648 |
#elif defined (TARGET_PPC)
|
649 |
|
650 |
/* Old gdb always expects FP registers. Newer (xml-aware) gdb only
|
651 |
expects whatever the target description contains. Due to a
|
652 |
historical mishap the FP registers appear in between core integer
|
653 |
regs and PC, MSR, CR, and so forth. We hack round this by giving the
|
654 |
FP regs zero size when talking to a newer gdb. */
|
655 |
#define NUM_CORE_REGS 71 |
656 |
#if defined (TARGET_PPC64)
|
657 |
#define GDB_CORE_XML "power64-core.xml" |
658 |
#else
|
659 |
#define GDB_CORE_XML "power-core.xml" |
660 |
#endif
|
661 |
|
662 |
static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) |
663 |
{ |
664 |
if (n < 32) { |
665 |
/* gprs */
|
666 |
GET_REGL(env->gpr[n]); |
667 |
} else if (n < 64) { |
668 |
/* fprs */
|
669 |
if (gdb_has_xml)
|
670 |
return 0; |
671 |
stfq_p(mem_buf, env->fpr[n-32]);
|
672 |
return 8; |
673 |
} else {
|
674 |
switch (n) {
|
675 |
case 64: GET_REGL(env->nip); |
676 |
case 65: GET_REGL(env->msr); |
677 |
case 66: |
678 |
{ |
679 |
uint32_t cr = 0;
|
680 |
int i;
|
681 |
for (i = 0; i < 8; i++) |
682 |
cr |= env->crf[i] << (32 - ((i + 1) * 4)); |
683 |
GET_REG32(cr); |
684 |
} |
685 |
case 67: GET_REGL(env->lr); |
686 |
case 68: GET_REGL(env->ctr); |
687 |
case 69: GET_REGL(env->xer); |
688 |
case 70: |
689 |
{ |
690 |
if (gdb_has_xml)
|
691 |
return 0; |
692 |
GET_REG32(0); /* fpscr */ |
693 |
} |
694 |
} |
695 |
} |
696 |
return 0; |
697 |
} |
698 |
|
699 |
static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) |
700 |
{ |
701 |
if (n < 32) { |
702 |
/* gprs */
|
703 |
env->gpr[n] = ldtul_p(mem_buf); |
704 |
return sizeof(target_ulong); |
705 |
} else if (n < 64) { |
706 |
/* fprs */
|
707 |
if (gdb_has_xml)
|
708 |
return 0; |
709 |
env->fpr[n-32] = ldfq_p(mem_buf);
|
710 |
return 8; |
711 |
} else {
|
712 |
switch (n) {
|
713 |
case 64: |
714 |
env->nip = ldtul_p(mem_buf); |
715 |
return sizeof(target_ulong); |
716 |
case 65: |
717 |
ppc_store_msr(env, ldtul_p(mem_buf)); |
718 |
return sizeof(target_ulong); |
719 |
case 66: |
720 |
{ |
721 |
uint32_t cr = ldl_p(mem_buf); |
722 |
int i;
|
723 |
for (i = 0; i < 8; i++) |
724 |
env->crf[i] = (cr >> (32 - ((i + 1) * 4))) & 0xF; |
725 |
return 4; |
726 |
} |
727 |
case 67: |
728 |
env->lr = ldtul_p(mem_buf); |
729 |
return sizeof(target_ulong); |
730 |
case 68: |
731 |
env->ctr = ldtul_p(mem_buf); |
732 |
return sizeof(target_ulong); |
733 |
case 69: |
734 |
env->xer = ldtul_p(mem_buf); |
735 |
return sizeof(target_ulong); |
736 |
case 70: |
737 |
/* fpscr */
|
738 |
if (gdb_has_xml)
|
739 |
return 0; |
740 |
return 4; |
741 |
} |
742 |
} |
743 |
return 0; |
744 |
} |
745 |
|
746 |
#elif defined (TARGET_SPARC)
|
747 |
|
748 |
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
|
749 |
#define NUM_CORE_REGS 86 |
750 |
#else
|
751 |
#define NUM_CORE_REGS 72 |
752 |
#endif
|
753 |
|
754 |
#ifdef TARGET_ABI32
|
755 |
#define GET_REGA(val) GET_REG32(val)
|
756 |
#else
|
757 |
#define GET_REGA(val) GET_REGL(val)
|
758 |
#endif
|
759 |
|
760 |
static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) |
761 |
{ |
762 |
if (n < 8) { |
763 |
/* g0..g7 */
|
764 |
GET_REGA(env->gregs[n]); |
765 |
} |
766 |
if (n < 32) { |
767 |
/* register window */
|
768 |
GET_REGA(env->regwptr[n - 8]);
|
769 |
} |
770 |
#if defined(TARGET_ABI32) || !defined(TARGET_SPARC64)
|
771 |
if (n < 64) { |
772 |
/* fprs */
|
773 |
GET_REG32(*((uint32_t *)&env->fpr[n - 32]));
|
774 |
} |
775 |
/* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */
|
776 |
switch (n) {
|
777 |
case 64: GET_REGA(env->y); |
778 |
case 65: GET_REGA(GET_PSR(env)); |
779 |
case 66: GET_REGA(env->wim); |
780 |
case 67: GET_REGA(env->tbr); |
781 |
case 68: GET_REGA(env->pc); |
782 |
case 69: GET_REGA(env->npc); |
783 |
case 70: GET_REGA(env->fsr); |
784 |
case 71: GET_REGA(0); /* csr */ |
785 |
default: GET_REGA(0); |
786 |
} |
787 |
#else
|
788 |
if (n < 64) { |
789 |
/* f0-f31 */
|
790 |
GET_REG32(*((uint32_t *)&env->fpr[n - 32]));
|
791 |
} |
792 |
if (n < 80) { |
793 |
/* f32-f62 (double width, even numbers only) */
|
794 |
uint64_t val; |
795 |
|
796 |
val = (uint64_t)*((uint32_t *)&env->fpr[(n - 64) * 2 + 32]) << 32; |
797 |
val |= *((uint32_t *)&env->fpr[(n - 64) * 2 + 33]); |
798 |
GET_REG64(val); |
799 |
} |
800 |
switch (n) {
|
801 |
case 80: GET_REGL(env->pc); |
802 |
case 81: GET_REGL(env->npc); |
803 |
case 82: GET_REGL(((uint64_t)GET_CCR(env) << 32) | |
804 |
((env->asi & 0xff) << 24) | |
805 |
((env->pstate & 0xfff) << 8) | |
806 |
GET_CWP64(env)); |
807 |
case 83: GET_REGL(env->fsr); |
808 |
case 84: GET_REGL(env->fprs); |
809 |
case 85: GET_REGL(env->y); |
810 |
} |
811 |
#endif
|
812 |
return 0; |
813 |
} |
814 |
|
815 |
static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) |
816 |
{ |
817 |
#if defined(TARGET_ABI32)
|
818 |
abi_ulong tmp; |
819 |
|
820 |
tmp = ldl_p(mem_buf); |
821 |
#else
|
822 |
target_ulong tmp; |
823 |
|
824 |
tmp = ldtul_p(mem_buf); |
825 |
#endif
|
826 |
|
827 |
if (n < 8) { |
828 |
/* g0..g7 */
|
829 |
env->gregs[n] = tmp; |
830 |
} else if (n < 32) { |
831 |
/* register window */
|
832 |
env->regwptr[n - 8] = tmp;
|
833 |
} |
834 |
#if defined(TARGET_ABI32) || !defined(TARGET_SPARC64)
|
835 |
else if (n < 64) { |
836 |
/* fprs */
|
837 |
*((uint32_t *)&env->fpr[n - 32]) = tmp;
|
838 |
} else {
|
839 |
/* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */
|
840 |
switch (n) {
|
841 |
case 64: env->y = tmp; break; |
842 |
case 65: PUT_PSR(env, tmp); break; |
843 |
case 66: env->wim = tmp; break; |
844 |
case 67: env->tbr = tmp; break; |
845 |
case 68: env->pc = tmp; break; |
846 |
case 69: env->npc = tmp; break; |
847 |
case 70: env->fsr = tmp; break; |
848 |
default: return 0; |
849 |
} |
850 |
} |
851 |
return 4; |
852 |
#else
|
853 |
else if (n < 64) { |
854 |
/* f0-f31 */
|
855 |
env->fpr[n] = ldfl_p(mem_buf); |
856 |
return 4; |
857 |
} else if (n < 80) { |
858 |
/* f32-f62 (double width, even numbers only) */
|
859 |
*((uint32_t *)&env->fpr[(n - 64) * 2 + 32]) = tmp >> 32; |
860 |
*((uint32_t *)&env->fpr[(n - 64) * 2 + 33]) = tmp; |
861 |
} else {
|
862 |
switch (n) {
|
863 |
case 80: env->pc = tmp; break; |
864 |
case 81: env->npc = tmp; break; |
865 |
case 82: |
866 |
PUT_CCR(env, tmp >> 32);
|
867 |
env->asi = (tmp >> 24) & 0xff; |
868 |
env->pstate = (tmp >> 8) & 0xfff; |
869 |
PUT_CWP64(env, tmp & 0xff);
|
870 |
break;
|
871 |
case 83: env->fsr = tmp; break; |
872 |
case 84: env->fprs = tmp; break; |
873 |
case 85: env->y = tmp; break; |
874 |
default: return 0; |
875 |
} |
876 |
} |
877 |
return 8; |
878 |
#endif
|
879 |
} |
880 |
#elif defined (TARGET_ARM)
|
881 |
|
882 |
/* Old gdb always expect FPA registers. Newer (xml-aware) gdb only expect
|
883 |
whatever the target description contains. Due to a historical mishap
|
884 |
the FPA registers appear in between core integer regs and the CPSR.
|
885 |
We hack round this by giving the FPA regs zero size when talking to a
|
886 |
newer gdb. */
|
887 |
#define NUM_CORE_REGS 26 |
888 |
#define GDB_CORE_XML "arm-core.xml" |
889 |
|
890 |
static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) |
891 |
{ |
892 |
if (n < 16) { |
893 |
/* Core integer register. */
|
894 |
GET_REG32(env->regs[n]); |
895 |
} |
896 |
if (n < 24) { |
897 |
/* FPA registers. */
|
898 |
if (gdb_has_xml)
|
899 |
return 0; |
900 |
memset(mem_buf, 0, 12); |
901 |
return 12; |
902 |
} |
903 |
switch (n) {
|
904 |
case 24: |
905 |
/* FPA status register. */
|
906 |
if (gdb_has_xml)
|
907 |
return 0; |
908 |
GET_REG32(0);
|
909 |
case 25: |
910 |
/* CPSR */
|
911 |
GET_REG32(cpsr_read(env)); |
912 |
} |
913 |
/* Unknown register. */
|
914 |
return 0; |
915 |
} |
916 |
|
917 |
static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) |
918 |
{ |
919 |
uint32_t tmp; |
920 |
|
921 |
tmp = ldl_p(mem_buf); |
922 |
|
923 |
/* Mask out low bit of PC to workaround gdb bugs. This will probably
|
924 |
cause problems if we ever implement the Jazelle DBX extensions. */
|
925 |
if (n == 15) |
926 |
tmp &= ~1;
|
927 |
|
928 |
if (n < 16) { |
929 |
/* Core integer register. */
|
930 |
env->regs[n] = tmp; |
931 |
return 4; |
932 |
} |
933 |
if (n < 24) { /* 16-23 */ |
934 |
/* FPA registers (ignored). */
|
935 |
if (gdb_has_xml)
|
936 |
return 0; |
937 |
return 12; |
938 |
} |
939 |
switch (n) {
|
940 |
case 24: |
941 |
/* FPA status register (ignored). */
|
942 |
if (gdb_has_xml)
|
943 |
return 0; |
944 |
return 4; |
945 |
case 25: |
946 |
/* CPSR */
|
947 |
cpsr_write (env, tmp, 0xffffffff);
|
948 |
return 4; |
949 |
} |
950 |
/* Unknown register. */
|
951 |
return 0; |
952 |
} |
953 |
|
954 |
#elif defined (TARGET_M68K)
|
955 |
|
956 |
#define NUM_CORE_REGS 18 |
957 |
|
958 |
#define GDB_CORE_XML "cf-core.xml" |
959 |
|
960 |
static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) |
961 |
{ |
962 |
if (n < 8) { |
963 |
/* D0-D7 */
|
964 |
GET_REG32(env->dregs[n]); |
965 |
} else if (n < 16) { |
966 |
/* A0-A7 */
|
967 |
GET_REG32(env->aregs[n - 8]);
|
968 |
} else {
|
969 |
switch (n) {
|
970 |
case 16: GET_REG32(env->sr); |
971 |
case 17: GET_REG32(env->pc); |
972 |
} |
973 |
} |
974 |
/* FP registers not included here because they vary between
|
975 |
ColdFire and m68k. Use XML bits for these. */
|
976 |
return 0; |
977 |
} |
978 |
|
979 |
static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) |
980 |
{ |
981 |
uint32_t tmp; |
982 |
|
983 |
tmp = ldl_p(mem_buf); |
984 |
|
985 |
if (n < 8) { |
986 |
/* D0-D7 */
|
987 |
env->dregs[n] = tmp; |
988 |
} else if (n < 8) { |
989 |
/* A0-A7 */
|
990 |
env->aregs[n - 8] = tmp;
|
991 |
} else {
|
992 |
switch (n) {
|
993 |
case 16: env->sr = tmp; break; |
994 |
case 17: env->pc = tmp; break; |
995 |
default: return 0; |
996 |
} |
997 |
} |
998 |
return 4; |
999 |
} |
1000 |
#elif defined (TARGET_MIPS)
|
1001 |
|
1002 |
#define NUM_CORE_REGS 73 |
1003 |
|
1004 |
static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) |
1005 |
{ |
1006 |
if (n < 32) { |
1007 |
GET_REGL(env->active_tc.gpr[n]); |
1008 |
} |
1009 |
if (env->CP0_Config1 & (1 << CP0C1_FP)) { |
1010 |
if (n >= 38 && n < 70) { |
1011 |
if (env->CP0_Status & (1 << CP0St_FR)) |
1012 |
GET_REGL(env->active_fpu.fpr[n - 38].d);
|
1013 |
else
|
1014 |
GET_REGL(env->active_fpu.fpr[n - 38].w[FP_ENDIAN_IDX]);
|
1015 |
} |
1016 |
switch (n) {
|
1017 |
case 70: GET_REGL((int32_t)env->active_fpu.fcr31); |
1018 |
case 71: GET_REGL((int32_t)env->active_fpu.fcr0); |
1019 |
} |
1020 |
} |
1021 |
switch (n) {
|
1022 |
case 32: GET_REGL((int32_t)env->CP0_Status); |
1023 |
case 33: GET_REGL(env->active_tc.LO[0]); |
1024 |
case 34: GET_REGL(env->active_tc.HI[0]); |
1025 |
case 35: GET_REGL(env->CP0_BadVAddr); |
1026 |
case 36: GET_REGL((int32_t)env->CP0_Cause); |
1027 |
case 37: GET_REGL(env->active_tc.PC); |
1028 |
case 72: GET_REGL(0); /* fp */ |
1029 |
case 89: GET_REGL((int32_t)env->CP0_PRid); |
1030 |
} |
1031 |
if (n >= 73 && n <= 88) { |
1032 |
/* 16 embedded regs. */
|
1033 |
GET_REGL(0);
|
1034 |
} |
1035 |
|
1036 |
return 0; |
1037 |
} |
1038 |
|
1039 |
/* convert MIPS rounding mode in FCR31 to IEEE library */
|
1040 |
static unsigned int ieee_rm[] = |
1041 |
{ |
1042 |
float_round_nearest_even, |
1043 |
float_round_to_zero, |
1044 |
float_round_up, |
1045 |
float_round_down |
1046 |
}; |
1047 |
#define RESTORE_ROUNDING_MODE \
|
1048 |
set_float_rounding_mode(ieee_rm[env->active_fpu.fcr31 & 3], &env->active_fpu.fp_status)
|
1049 |
|
1050 |
static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) |
1051 |
{ |
1052 |
target_ulong tmp; |
1053 |
|
1054 |
tmp = ldtul_p(mem_buf); |
1055 |
|
1056 |
if (n < 32) { |
1057 |
env->active_tc.gpr[n] = tmp; |
1058 |
return sizeof(target_ulong); |
1059 |
} |
1060 |
if (env->CP0_Config1 & (1 << CP0C1_FP) |
1061 |
&& n >= 38 && n < 73) { |
1062 |
if (n < 70) { |
1063 |
if (env->CP0_Status & (1 << CP0St_FR)) |
1064 |
env->active_fpu.fpr[n - 38].d = tmp;
|
1065 |
else
|
1066 |
env->active_fpu.fpr[n - 38].w[FP_ENDIAN_IDX] = tmp;
|
1067 |
} |
1068 |
switch (n) {
|
1069 |
case 70: |
1070 |
env->active_fpu.fcr31 = tmp & 0xFF83FFFF;
|
1071 |
/* set rounding mode */
|
1072 |
RESTORE_ROUNDING_MODE; |
1073 |
#ifndef CONFIG_SOFTFLOAT
|
1074 |
/* no floating point exception for native float */
|
1075 |
SET_FP_ENABLE(env->active_fpu.fcr31, 0);
|
1076 |
#endif
|
1077 |
break;
|
1078 |
case 71: env->active_fpu.fcr0 = tmp; break; |
1079 |
} |
1080 |
return sizeof(target_ulong); |
1081 |
} |
1082 |
switch (n) {
|
1083 |
case 32: env->CP0_Status = tmp; break; |
1084 |
case 33: env->active_tc.LO[0] = tmp; break; |
1085 |
case 34: env->active_tc.HI[0] = tmp; break; |
1086 |
case 35: env->CP0_BadVAddr = tmp; break; |
1087 |
case 36: env->CP0_Cause = tmp; break; |
1088 |
case 37: env->active_tc.PC = tmp; break; |
1089 |
case 72: /* fp, ignored */ break; |
1090 |
default:
|
1091 |
if (n > 89) |
1092 |
return 0; |
1093 |
/* Other registers are readonly. Ignore writes. */
|
1094 |
break;
|
1095 |
} |
1096 |
|
1097 |
return sizeof(target_ulong); |
1098 |
} |
1099 |
#elif defined (TARGET_SH4)
|
1100 |
|
1101 |
/* Hint: Use "set architecture sh4" in GDB to see fpu registers */
|
1102 |
/* FIXME: We should use XML for this. */
|
1103 |
|
1104 |
#define NUM_CORE_REGS 59 |
1105 |
|
1106 |
static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) |
1107 |
{ |
1108 |
if (n < 8) { |
1109 |
if ((env->sr & (SR_MD | SR_RB)) == (SR_MD | SR_RB)) {
|
1110 |
GET_REGL(env->gregs[n + 16]);
|
1111 |
} else {
|
1112 |
GET_REGL(env->gregs[n]); |
1113 |
} |
1114 |
} else if (n < 16) { |
1115 |
GET_REGL(env->gregs[n - 8]);
|
1116 |
} else if (n >= 25 && n < 41) { |
1117 |
GET_REGL(env->fregs[(n - 25) + ((env->fpscr & FPSCR_FR) ? 16 : 0)]); |
1118 |
} else if (n >= 43 && n < 51) { |
1119 |
GET_REGL(env->gregs[n - 43]);
|
1120 |
} else if (n >= 51 && n < 59) { |
1121 |
GET_REGL(env->gregs[n - (51 - 16)]); |
1122 |
} |
1123 |
switch (n) {
|
1124 |
case 16: GET_REGL(env->pc); |
1125 |
case 17: GET_REGL(env->pr); |
1126 |
case 18: GET_REGL(env->gbr); |
1127 |
case 19: GET_REGL(env->vbr); |
1128 |
case 20: GET_REGL(env->mach); |
1129 |
case 21: GET_REGL(env->macl); |
1130 |
case 22: GET_REGL(env->sr); |
1131 |
case 23: GET_REGL(env->fpul); |
1132 |
case 24: GET_REGL(env->fpscr); |
1133 |
case 41: GET_REGL(env->ssr); |
1134 |
case 42: GET_REGL(env->spc); |
1135 |
} |
1136 |
|
1137 |
return 0; |
1138 |
} |
1139 |
|
1140 |
static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) |
1141 |
{ |
1142 |
uint32_t tmp; |
1143 |
|
1144 |
tmp = ldl_p(mem_buf); |
1145 |
|
1146 |
if (n < 8) { |
1147 |
if ((env->sr & (SR_MD | SR_RB)) == (SR_MD | SR_RB)) {
|
1148 |
env->gregs[n + 16] = tmp;
|
1149 |
} else {
|
1150 |
env->gregs[n] = tmp; |
1151 |
} |
1152 |
return 4; |
1153 |
} else if (n < 16) { |
1154 |
env->gregs[n - 8] = tmp;
|
1155 |
return 4; |
1156 |
} else if (n >= 25 && n < 41) { |
1157 |
env->fregs[(n - 25) + ((env->fpscr & FPSCR_FR) ? 16 : 0)] = tmp; |
1158 |
} else if (n >= 43 && n < 51) { |
1159 |
env->gregs[n - 43] = tmp;
|
1160 |
return 4; |
1161 |
} else if (n >= 51 && n < 59) { |
1162 |
env->gregs[n - (51 - 16)] = tmp; |
1163 |
return 4; |
1164 |
} |
1165 |
switch (n) {
|
1166 |
case 16: env->pc = tmp; |
1167 |
case 17: env->pr = tmp; |
1168 |
case 18: env->gbr = tmp; |
1169 |
case 19: env->vbr = tmp; |
1170 |
case 20: env->mach = tmp; |
1171 |
case 21: env->macl = tmp; |
1172 |
case 22: env->sr = tmp; |
1173 |
case 23: env->fpul = tmp; |
1174 |
case 24: env->fpscr = tmp; |
1175 |
case 41: env->ssr = tmp; |
1176 |
case 42: env->spc = tmp; |
1177 |
default: return 0; |
1178 |
} |
1179 |
|
1180 |
return 4; |
1181 |
} |
1182 |
#elif defined (TARGET_MICROBLAZE)
|
1183 |
|
1184 |
#define NUM_CORE_REGS (32 + 5) |
1185 |
|
1186 |
static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) |
1187 |
{ |
1188 |
if (n < 32) { |
1189 |
GET_REG32(env->regs[n]); |
1190 |
} else {
|
1191 |
GET_REG32(env->sregs[n - 32]);
|
1192 |
} |
1193 |
return 0; |
1194 |
} |
1195 |
|
1196 |
static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) |
1197 |
{ |
1198 |
uint32_t tmp; |
1199 |
|
1200 |
if (n > NUM_CORE_REGS)
|
1201 |
return 0; |
1202 |
|
1203 |
tmp = ldl_p(mem_buf); |
1204 |
|
1205 |
if (n < 32) { |
1206 |
env->regs[n] = tmp; |
1207 |
} else {
|
1208 |
env->sregs[n - 32] = tmp;
|
1209 |
} |
1210 |
return 4; |
1211 |
} |
1212 |
#elif defined (TARGET_CRIS)
|
1213 |
|
1214 |
#define NUM_CORE_REGS 49 |
1215 |
|
1216 |
static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) |
1217 |
{ |
1218 |
uint8_t srs; |
1219 |
|
1220 |
srs = env->pregs[PR_SRS]; |
1221 |
if (n < 16) { |
1222 |
GET_REG32(env->regs[n]); |
1223 |
} |
1224 |
|
1225 |
if (n >= 21 && n < 32) { |
1226 |
GET_REG32(env->pregs[n - 16]);
|
1227 |
} |
1228 |
if (n >= 33 && n < 49) { |
1229 |
GET_REG32(env->sregs[srs][n - 33]);
|
1230 |
} |
1231 |
switch (n) {
|
1232 |
case 16: GET_REG8(env->pregs[0]); |
1233 |
case 17: GET_REG8(env->pregs[1]); |
1234 |
case 18: GET_REG32(env->pregs[2]); |
1235 |
case 19: GET_REG8(srs); |
1236 |
case 20: GET_REG16(env->pregs[4]); |
1237 |
case 32: GET_REG32(env->pc); |
1238 |
} |
1239 |
|
1240 |
return 0; |
1241 |
} |
1242 |
|
1243 |
static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) |
1244 |
{ |
1245 |
uint32_t tmp; |
1246 |
|
1247 |
if (n > 49) |
1248 |
return 0; |
1249 |
|
1250 |
tmp = ldl_p(mem_buf); |
1251 |
|
1252 |
if (n < 16) { |
1253 |
env->regs[n] = tmp; |
1254 |
} |
1255 |
|
1256 |
if (n >= 21 && n < 32) { |
1257 |
env->pregs[n - 16] = tmp;
|
1258 |
} |
1259 |
|
1260 |
/* FIXME: Should support function regs be writable? */
|
1261 |
switch (n) {
|
1262 |
case 16: return 1; |
1263 |
case 17: return 1; |
1264 |
case 18: env->pregs[PR_PID] = tmp; break; |
1265 |
case 19: return 1; |
1266 |
case 20: return 2; |
1267 |
case 32: env->pc = tmp; break; |
1268 |
} |
1269 |
|
1270 |
return 4; |
1271 |
} |
1272 |
#elif defined (TARGET_ALPHA)
|
1273 |
|
1274 |
#define NUM_CORE_REGS 65 |
1275 |
|
1276 |
static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) |
1277 |
{ |
1278 |
if (n < 31) { |
1279 |
GET_REGL(env->ir[n]); |
1280 |
} |
1281 |
else if (n == 31) { |
1282 |
GET_REGL(0);
|
1283 |
} |
1284 |
else if (n<63) { |
1285 |
uint64_t val; |
1286 |
|
1287 |
val = *((uint64_t *)&env->fir[n-32]);
|
1288 |
GET_REGL(val); |
1289 |
} |
1290 |
else if (n==63) { |
1291 |
GET_REGL(env->fpcr); |
1292 |
} |
1293 |
else if (n==64) { |
1294 |
GET_REGL(env->pc); |
1295 |
} |
1296 |
else {
|
1297 |
GET_REGL(0);
|
1298 |
} |
1299 |
|
1300 |
return 0; |
1301 |
} |
1302 |
|
1303 |
static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) |
1304 |
{ |
1305 |
target_ulong tmp; |
1306 |
tmp = ldtul_p(mem_buf); |
1307 |
|
1308 |
if (n < 31) { |
1309 |
env->ir[n] = tmp; |
1310 |
} |
1311 |
|
1312 |
if (n > 31 && n < 63) { |
1313 |
env->fir[n - 32] = ldfl_p(mem_buf);
|
1314 |
} |
1315 |
|
1316 |
if (n == 64 ) { |
1317 |
env->pc=tmp; |
1318 |
} |
1319 |
|
1320 |
return 8; |
1321 |
} |
1322 |
#else
|
1323 |
|
1324 |
#define NUM_CORE_REGS 0 |
1325 |
|
1326 |
static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) |
1327 |
{ |
1328 |
return 0; |
1329 |
} |
1330 |
|
1331 |
static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) |
1332 |
{ |
1333 |
return 0; |
1334 |
} |
1335 |
|
1336 |
#endif
|
1337 |
|
1338 |
static int num_g_regs = NUM_CORE_REGS; |
1339 |
|
1340 |
#ifdef GDB_CORE_XML
|
1341 |
/* Encode data using the encoding for 'x' packets. */
|
1342 |
static int memtox(char *buf, const char *mem, int len) |
1343 |
{ |
1344 |
char *p = buf;
|
1345 |
char c;
|
1346 |
|
1347 |
while (len--) {
|
1348 |
c = *(mem++); |
1349 |
switch (c) {
|
1350 |
case '#': case '$': case '*': case '}': |
1351 |
*(p++) = '}';
|
1352 |
*(p++) = c ^ 0x20;
|
1353 |
break;
|
1354 |
default:
|
1355 |
*(p++) = c; |
1356 |
break;
|
1357 |
} |
1358 |
} |
1359 |
return p - buf;
|
1360 |
} |
1361 |
|
1362 |
static const char *get_feature_xml(const char *p, const char **newp) |
1363 |
{ |
1364 |
extern const char *const xml_builtin[][2]; |
1365 |
size_t len; |
1366 |
int i;
|
1367 |
const char *name; |
1368 |
static char target_xml[1024]; |
1369 |
|
1370 |
len = 0;
|
1371 |
while (p[len] && p[len] != ':') |
1372 |
len++; |
1373 |
*newp = p + len; |
1374 |
|
1375 |
name = NULL;
|
1376 |
if (strncmp(p, "target.xml", len) == 0) { |
1377 |
/* Generate the XML description for this CPU. */
|
1378 |
if (!target_xml[0]) { |
1379 |
GDBRegisterState *r; |
1380 |
|
1381 |
snprintf(target_xml, sizeof(target_xml),
|
1382 |
"<?xml version=\"1.0\"?>"
|
1383 |
"<!DOCTYPE target SYSTEM \"gdb-target.dtd\">"
|
1384 |
"<target>"
|
1385 |
"<xi:include href=\"%s\"/>",
|
1386 |
GDB_CORE_XML); |
1387 |
|
1388 |
for (r = first_cpu->gdb_regs; r; r = r->next) {
|
1389 |
pstrcat(target_xml, sizeof(target_xml), "<xi:include href=\""); |
1390 |
pstrcat(target_xml, sizeof(target_xml), r->xml);
|
1391 |
pstrcat(target_xml, sizeof(target_xml), "\"/>"); |
1392 |
} |
1393 |
pstrcat(target_xml, sizeof(target_xml), "</target>"); |
1394 |
} |
1395 |
return target_xml;
|
1396 |
} |
1397 |
for (i = 0; ; i++) { |
1398 |
name = xml_builtin[i][0];
|
1399 |
if (!name || (strncmp(name, p, len) == 0 && strlen(name) == len)) |
1400 |
break;
|
1401 |
} |
1402 |
return name ? xml_builtin[i][1] : NULL; |
1403 |
} |
1404 |
#endif
|
1405 |
|
1406 |
static int gdb_read_register(CPUState *env, uint8_t *mem_buf, int reg) |
1407 |
{ |
1408 |
GDBRegisterState *r; |
1409 |
|
1410 |
if (reg < NUM_CORE_REGS)
|
1411 |
return cpu_gdb_read_register(env, mem_buf, reg);
|
1412 |
|
1413 |
for (r = env->gdb_regs; r; r = r->next) {
|
1414 |
if (r->base_reg <= reg && reg < r->base_reg + r->num_regs) {
|
1415 |
return r->get_reg(env, mem_buf, reg - r->base_reg);
|
1416 |
} |
1417 |
} |
1418 |
return 0; |
1419 |
} |
1420 |
|
1421 |
static int gdb_write_register(CPUState *env, uint8_t *mem_buf, int reg) |
1422 |
{ |
1423 |
GDBRegisterState *r; |
1424 |
|
1425 |
if (reg < NUM_CORE_REGS)
|
1426 |
return cpu_gdb_write_register(env, mem_buf, reg);
|
1427 |
|
1428 |
for (r = env->gdb_regs; r; r = r->next) {
|
1429 |
if (r->base_reg <= reg && reg < r->base_reg + r->num_regs) {
|
1430 |
return r->set_reg(env, mem_buf, reg - r->base_reg);
|
1431 |
} |
1432 |
} |
1433 |
return 0; |
1434 |
} |
1435 |
|
1436 |
/* Register a supplemental set of CPU registers. If g_pos is nonzero it
|
1437 |
specifies the first register number and these registers are included in
|
1438 |
a standard "g" packet. Direction is relative to gdb, i.e. get_reg is
|
1439 |
gdb reading a CPU register, and set_reg is gdb modifying a CPU register.
|
1440 |
*/
|
1441 |
|
1442 |
void gdb_register_coprocessor(CPUState * env,
|
1443 |
gdb_reg_cb get_reg, gdb_reg_cb set_reg, |
1444 |
int num_regs, const char *xml, int g_pos) |
1445 |
{ |
1446 |
GDBRegisterState *s; |
1447 |
GDBRegisterState **p; |
1448 |
static int last_reg = NUM_CORE_REGS; |
1449 |
|
1450 |
s = (GDBRegisterState *)qemu_mallocz(sizeof(GDBRegisterState));
|
1451 |
s->base_reg = last_reg; |
1452 |
s->num_regs = num_regs; |
1453 |
s->get_reg = get_reg; |
1454 |
s->set_reg = set_reg; |
1455 |
s->xml = xml; |
1456 |
p = &env->gdb_regs; |
1457 |
while (*p) {
|
1458 |
/* Check for duplicates. */
|
1459 |
if (strcmp((*p)->xml, xml) == 0) |
1460 |
return;
|
1461 |
p = &(*p)->next; |
1462 |
} |
1463 |
/* Add to end of list. */
|
1464 |
last_reg += num_regs; |
1465 |
*p = s; |
1466 |
if (g_pos) {
|
1467 |
if (g_pos != s->base_reg) {
|
1468 |
fprintf(stderr, "Error: Bad gdb register numbering for '%s'\n"
|
1469 |
"Expected %d got %d\n", xml, g_pos, s->base_reg);
|
1470 |
} else {
|
1471 |
num_g_regs = last_reg; |
1472 |
} |
1473 |
} |
1474 |
} |
1475 |
|
1476 |
#ifndef CONFIG_USER_ONLY
|
1477 |
static const int xlat_gdb_type[] = { |
1478 |
[GDB_WATCHPOINT_WRITE] = BP_GDB | BP_MEM_WRITE, |
1479 |
[GDB_WATCHPOINT_READ] = BP_GDB | BP_MEM_READ, |
1480 |
[GDB_WATCHPOINT_ACCESS] = BP_GDB | BP_MEM_ACCESS, |
1481 |
}; |
1482 |
#endif
|
1483 |
|
1484 |
static int gdb_breakpoint_insert(target_ulong addr, target_ulong len, int type) |
1485 |
{ |
1486 |
CPUState *env; |
1487 |
int err = 0; |
1488 |
|
1489 |
if (kvm_enabled())
|
1490 |
return kvm_insert_breakpoint(gdbserver_state->c_cpu, addr, len, type);
|
1491 |
|
1492 |
switch (type) {
|
1493 |
case GDB_BREAKPOINT_SW:
|
1494 |
case GDB_BREAKPOINT_HW:
|
1495 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1496 |
err = cpu_breakpoint_insert(env, addr, BP_GDB, NULL);
|
1497 |
if (err)
|
1498 |
break;
|
1499 |
} |
1500 |
return err;
|
1501 |
#ifndef CONFIG_USER_ONLY
|
1502 |
case GDB_WATCHPOINT_WRITE:
|
1503 |
case GDB_WATCHPOINT_READ:
|
1504 |
case GDB_WATCHPOINT_ACCESS:
|
1505 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1506 |
err = cpu_watchpoint_insert(env, addr, len, xlat_gdb_type[type], |
1507 |
NULL);
|
1508 |
if (err)
|
1509 |
break;
|
1510 |
} |
1511 |
return err;
|
1512 |
#endif
|
1513 |
default:
|
1514 |
return -ENOSYS;
|
1515 |
} |
1516 |
} |
1517 |
|
1518 |
static int gdb_breakpoint_remove(target_ulong addr, target_ulong len, int type) |
1519 |
{ |
1520 |
CPUState *env; |
1521 |
int err = 0; |
1522 |
|
1523 |
if (kvm_enabled())
|
1524 |
return kvm_remove_breakpoint(gdbserver_state->c_cpu, addr, len, type);
|
1525 |
|
1526 |
switch (type) {
|
1527 |
case GDB_BREAKPOINT_SW:
|
1528 |
case GDB_BREAKPOINT_HW:
|
1529 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1530 |
err = cpu_breakpoint_remove(env, addr, BP_GDB); |
1531 |
if (err)
|
1532 |
break;
|
1533 |
} |
1534 |
return err;
|
1535 |
#ifndef CONFIG_USER_ONLY
|
1536 |
case GDB_WATCHPOINT_WRITE:
|
1537 |
case GDB_WATCHPOINT_READ:
|
1538 |
case GDB_WATCHPOINT_ACCESS:
|
1539 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1540 |
err = cpu_watchpoint_remove(env, addr, len, xlat_gdb_type[type]); |
1541 |
if (err)
|
1542 |
break;
|
1543 |
} |
1544 |
return err;
|
1545 |
#endif
|
1546 |
default:
|
1547 |
return -ENOSYS;
|
1548 |
} |
1549 |
} |
1550 |
|
1551 |
static void gdb_breakpoint_remove_all(void) |
1552 |
{ |
1553 |
CPUState *env; |
1554 |
|
1555 |
if (kvm_enabled()) {
|
1556 |
kvm_remove_all_breakpoints(gdbserver_state->c_cpu); |
1557 |
return;
|
1558 |
} |
1559 |
|
1560 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1561 |
cpu_breakpoint_remove_all(env, BP_GDB); |
1562 |
#ifndef CONFIG_USER_ONLY
|
1563 |
cpu_watchpoint_remove_all(env, BP_GDB); |
1564 |
#endif
|
1565 |
} |
1566 |
} |
1567 |
|
1568 |
static void gdb_set_cpu_pc(GDBState *s, target_ulong pc) |
1569 |
{ |
1570 |
#if defined(TARGET_I386)
|
1571 |
cpu_synchronize_state(s->c_cpu); |
1572 |
s->c_cpu->eip = pc; |
1573 |
#elif defined (TARGET_PPC)
|
1574 |
s->c_cpu->nip = pc; |
1575 |
#elif defined (TARGET_SPARC)
|
1576 |
s->c_cpu->pc = pc; |
1577 |
s->c_cpu->npc = pc + 4;
|
1578 |
#elif defined (TARGET_ARM)
|
1579 |
s->c_cpu->regs[15] = pc;
|
1580 |
#elif defined (TARGET_SH4)
|
1581 |
s->c_cpu->pc = pc; |
1582 |
#elif defined (TARGET_MIPS)
|
1583 |
s->c_cpu->active_tc.PC = pc; |
1584 |
#elif defined (TARGET_MICROBLAZE)
|
1585 |
s->c_cpu->sregs[SR_PC] = pc; |
1586 |
#elif defined (TARGET_CRIS)
|
1587 |
s->c_cpu->pc = pc; |
1588 |
#elif defined (TARGET_ALPHA)
|
1589 |
s->c_cpu->pc = pc; |
1590 |
#endif
|
1591 |
} |
1592 |
|
1593 |
static inline int gdb_id(CPUState *env) |
1594 |
{ |
1595 |
#if defined(CONFIG_USER_ONLY) && defined(CONFIG_USE_NPTL)
|
1596 |
return env->host_tid;
|
1597 |
#else
|
1598 |
return env->cpu_index + 1; |
1599 |
#endif
|
1600 |
} |
1601 |
|
1602 |
static CPUState *find_cpu(uint32_t thread_id)
|
1603 |
{ |
1604 |
CPUState *env; |
1605 |
|
1606 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1607 |
if (gdb_id(env) == thread_id) {
|
1608 |
return env;
|
1609 |
} |
1610 |
} |
1611 |
|
1612 |
return NULL; |
1613 |
} |
1614 |
|
1615 |
static int gdb_handle_packet(GDBState *s, const char *line_buf) |
1616 |
{ |
1617 |
CPUState *env; |
1618 |
const char *p; |
1619 |
uint32_t thread; |
1620 |
int ch, reg_size, type, res;
|
1621 |
char buf[MAX_PACKET_LENGTH];
|
1622 |
uint8_t mem_buf[MAX_PACKET_LENGTH]; |
1623 |
uint8_t *registers; |
1624 |
target_ulong addr, len; |
1625 |
|
1626 |
#ifdef DEBUG_GDB
|
1627 |
printf("command='%s'\n", line_buf);
|
1628 |
#endif
|
1629 |
p = line_buf; |
1630 |
ch = *p++; |
1631 |
switch(ch) {
|
1632 |
case '?': |
1633 |
/* TODO: Make this return the correct value for user-mode. */
|
1634 |
snprintf(buf, sizeof(buf), "T%02xthread:%02x;", GDB_SIGNAL_TRAP, |
1635 |
gdb_id(s->c_cpu)); |
1636 |
put_packet(s, buf); |
1637 |
/* Remove all the breakpoints when this query is issued,
|
1638 |
* because gdb is doing and initial connect and the state
|
1639 |
* should be cleaned up.
|
1640 |
*/
|
1641 |
gdb_breakpoint_remove_all(); |
1642 |
break;
|
1643 |
case 'c': |
1644 |
if (*p != '\0') { |
1645 |
addr = strtoull(p, (char **)&p, 16); |
1646 |
gdb_set_cpu_pc(s, addr); |
1647 |
} |
1648 |
s->signal = 0;
|
1649 |
gdb_continue(s); |
1650 |
return RS_IDLE;
|
1651 |
case 'C': |
1652 |
s->signal = gdb_signal_to_target (strtoul(p, (char **)&p, 16)); |
1653 |
if (s->signal == -1) |
1654 |
s->signal = 0;
|
1655 |
gdb_continue(s); |
1656 |
return RS_IDLE;
|
1657 |
case 'v': |
1658 |
if (strncmp(p, "Cont", 4) == 0) { |
1659 |
int res_signal, res_thread;
|
1660 |
|
1661 |
p += 4;
|
1662 |
if (*p == '?') { |
1663 |
put_packet(s, "vCont;c;C;s;S");
|
1664 |
break;
|
1665 |
} |
1666 |
res = 0;
|
1667 |
res_signal = 0;
|
1668 |
res_thread = 0;
|
1669 |
while (*p) {
|
1670 |
int action, signal;
|
1671 |
|
1672 |
if (*p++ != ';') { |
1673 |
res = 0;
|
1674 |
break;
|
1675 |
} |
1676 |
action = *p++; |
1677 |
signal = 0;
|
1678 |
if (action == 'C' || action == 'S') { |
1679 |
signal = strtoul(p, (char **)&p, 16); |
1680 |
} else if (action != 'c' && action != 's') { |
1681 |
res = 0;
|
1682 |
break;
|
1683 |
} |
1684 |
thread = 0;
|
1685 |
if (*p == ':') { |
1686 |
thread = strtoull(p+1, (char **)&p, 16); |
1687 |
} |
1688 |
action = tolower(action); |
1689 |
if (res == 0 || (res == 'c' && action == 's')) { |
1690 |
res = action; |
1691 |
res_signal = signal; |
1692 |
res_thread = thread; |
1693 |
} |
1694 |
} |
1695 |
if (res) {
|
1696 |
if (res_thread != -1 && res_thread != 0) { |
1697 |
env = find_cpu(res_thread); |
1698 |
if (env == NULL) { |
1699 |
put_packet(s, "E22");
|
1700 |
break;
|
1701 |
} |
1702 |
s->c_cpu = env; |
1703 |
} |
1704 |
if (res == 's') { |
1705 |
cpu_single_step(s->c_cpu, sstep_flags); |
1706 |
} |
1707 |
s->signal = res_signal; |
1708 |
gdb_continue(s); |
1709 |
return RS_IDLE;
|
1710 |
} |
1711 |
break;
|
1712 |
} else {
|
1713 |
goto unknown_command;
|
1714 |
} |
1715 |
case 'k': |
1716 |
/* Kill the target */
|
1717 |
fprintf(stderr, "\nQEMU: Terminated via GDBstub\n");
|
1718 |
exit(0);
|
1719 |
case 'D': |
1720 |
/* Detach packet */
|
1721 |
gdb_breakpoint_remove_all(); |
1722 |
gdb_continue(s); |
1723 |
put_packet(s, "OK");
|
1724 |
break;
|
1725 |
case 's': |
1726 |
if (*p != '\0') { |
1727 |
addr = strtoull(p, (char **)&p, 16); |
1728 |
gdb_set_cpu_pc(s, addr); |
1729 |
} |
1730 |
cpu_single_step(s->c_cpu, sstep_flags); |
1731 |
gdb_continue(s); |
1732 |
return RS_IDLE;
|
1733 |
case 'F': |
1734 |
{ |
1735 |
target_ulong ret; |
1736 |
target_ulong err; |
1737 |
|
1738 |
ret = strtoull(p, (char **)&p, 16); |
1739 |
if (*p == ',') { |
1740 |
p++; |
1741 |
err = strtoull(p, (char **)&p, 16); |
1742 |
} else {
|
1743 |
err = 0;
|
1744 |
} |
1745 |
if (*p == ',') |
1746 |
p++; |
1747 |
type = *p; |
1748 |
if (gdb_current_syscall_cb)
|
1749 |
gdb_current_syscall_cb(s->c_cpu, ret, err); |
1750 |
if (type == 'C') { |
1751 |
put_packet(s, "T02");
|
1752 |
} else {
|
1753 |
gdb_continue(s); |
1754 |
} |
1755 |
} |
1756 |
break;
|
1757 |
case 'g': |
1758 |
cpu_synchronize_state(s->g_cpu); |
1759 |
len = 0;
|
1760 |
for (addr = 0; addr < num_g_regs; addr++) { |
1761 |
reg_size = gdb_read_register(s->g_cpu, mem_buf + len, addr); |
1762 |
len += reg_size; |
1763 |
} |
1764 |
memtohex(buf, mem_buf, len); |
1765 |
put_packet(s, buf); |
1766 |
break;
|
1767 |
case 'G': |
1768 |
cpu_synchronize_state(s->g_cpu); |
1769 |
registers = mem_buf; |
1770 |
len = strlen(p) / 2;
|
1771 |
hextomem((uint8_t *)registers, p, len); |
1772 |
for (addr = 0; addr < num_g_regs && len > 0; addr++) { |
1773 |
reg_size = gdb_write_register(s->g_cpu, registers, addr); |
1774 |
len -= reg_size; |
1775 |
registers += reg_size; |
1776 |
} |
1777 |
put_packet(s, "OK");
|
1778 |
break;
|
1779 |
case 'm': |
1780 |
addr = strtoull(p, (char **)&p, 16); |
1781 |
if (*p == ',') |
1782 |
p++; |
1783 |
len = strtoull(p, NULL, 16); |
1784 |
if (cpu_memory_rw_debug(s->g_cpu, addr, mem_buf, len, 0) != 0) { |
1785 |
put_packet (s, "E14");
|
1786 |
} else {
|
1787 |
memtohex(buf, mem_buf, len); |
1788 |
put_packet(s, buf); |
1789 |
} |
1790 |
break;
|
1791 |
case 'M': |
1792 |
addr = strtoull(p, (char **)&p, 16); |
1793 |
if (*p == ',') |
1794 |
p++; |
1795 |
len = strtoull(p, (char **)&p, 16); |
1796 |
if (*p == ':') |
1797 |
p++; |
1798 |
hextomem(mem_buf, p, len); |
1799 |
if (cpu_memory_rw_debug(s->g_cpu, addr, mem_buf, len, 1) != 0) |
1800 |
put_packet(s, "E14");
|
1801 |
else
|
1802 |
put_packet(s, "OK");
|
1803 |
break;
|
1804 |
case 'p': |
1805 |
/* Older gdb are really dumb, and don't use 'g' if 'p' is avaialable.
|
1806 |
This works, but can be very slow. Anything new enough to
|
1807 |
understand XML also knows how to use this properly. */
|
1808 |
if (!gdb_has_xml)
|
1809 |
goto unknown_command;
|
1810 |
addr = strtoull(p, (char **)&p, 16); |
1811 |
reg_size = gdb_read_register(s->g_cpu, mem_buf, addr); |
1812 |
if (reg_size) {
|
1813 |
memtohex(buf, mem_buf, reg_size); |
1814 |
put_packet(s, buf); |
1815 |
} else {
|
1816 |
put_packet(s, "E14");
|
1817 |
} |
1818 |
break;
|
1819 |
case 'P': |
1820 |
if (!gdb_has_xml)
|
1821 |
goto unknown_command;
|
1822 |
addr = strtoull(p, (char **)&p, 16); |
1823 |
if (*p == '=') |
1824 |
p++; |
1825 |
reg_size = strlen(p) / 2;
|
1826 |
hextomem(mem_buf, p, reg_size); |
1827 |
gdb_write_register(s->g_cpu, mem_buf, addr); |
1828 |
put_packet(s, "OK");
|
1829 |
break;
|
1830 |
case 'Z': |
1831 |
case 'z': |
1832 |
type = strtoul(p, (char **)&p, 16); |
1833 |
if (*p == ',') |
1834 |
p++; |
1835 |
addr = strtoull(p, (char **)&p, 16); |
1836 |
if (*p == ',') |
1837 |
p++; |
1838 |
len = strtoull(p, (char **)&p, 16); |
1839 |
if (ch == 'Z') |
1840 |
res = gdb_breakpoint_insert(addr, len, type); |
1841 |
else
|
1842 |
res = gdb_breakpoint_remove(addr, len, type); |
1843 |
if (res >= 0) |
1844 |
put_packet(s, "OK");
|
1845 |
else if (res == -ENOSYS) |
1846 |
put_packet(s, "");
|
1847 |
else
|
1848 |
put_packet(s, "E22");
|
1849 |
break;
|
1850 |
case 'H': |
1851 |
type = *p++; |
1852 |
thread = strtoull(p, (char **)&p, 16); |
1853 |
if (thread == -1 || thread == 0) { |
1854 |
put_packet(s, "OK");
|
1855 |
break;
|
1856 |
} |
1857 |
env = find_cpu(thread); |
1858 |
if (env == NULL) { |
1859 |
put_packet(s, "E22");
|
1860 |
break;
|
1861 |
} |
1862 |
switch (type) {
|
1863 |
case 'c': |
1864 |
s->c_cpu = env; |
1865 |
put_packet(s, "OK");
|
1866 |
break;
|
1867 |
case 'g': |
1868 |
s->g_cpu = env; |
1869 |
put_packet(s, "OK");
|
1870 |
break;
|
1871 |
default:
|
1872 |
put_packet(s, "E22");
|
1873 |
break;
|
1874 |
} |
1875 |
break;
|
1876 |
case 'T': |
1877 |
thread = strtoull(p, (char **)&p, 16); |
1878 |
env = find_cpu(thread); |
1879 |
|
1880 |
if (env != NULL) { |
1881 |
put_packet(s, "OK");
|
1882 |
} else {
|
1883 |
put_packet(s, "E22");
|
1884 |
} |
1885 |
break;
|
1886 |
case 'q': |
1887 |
case 'Q': |
1888 |
/* parse any 'q' packets here */
|
1889 |
if (!strcmp(p,"qemu.sstepbits")) { |
1890 |
/* Query Breakpoint bit definitions */
|
1891 |
snprintf(buf, sizeof(buf), "ENABLE=%x,NOIRQ=%x,NOTIMER=%x", |
1892 |
SSTEP_ENABLE, |
1893 |
SSTEP_NOIRQ, |
1894 |
SSTEP_NOTIMER); |
1895 |
put_packet(s, buf); |
1896 |
break;
|
1897 |
} else if (strncmp(p,"qemu.sstep",10) == 0) { |
1898 |
/* Display or change the sstep_flags */
|
1899 |
p += 10;
|
1900 |
if (*p != '=') { |
1901 |
/* Display current setting */
|
1902 |
snprintf(buf, sizeof(buf), "0x%x", sstep_flags); |
1903 |
put_packet(s, buf); |
1904 |
break;
|
1905 |
} |
1906 |
p++; |
1907 |
type = strtoul(p, (char **)&p, 16); |
1908 |
sstep_flags = type; |
1909 |
put_packet(s, "OK");
|
1910 |
break;
|
1911 |
} else if (strcmp(p,"C") == 0) { |
1912 |
/* "Current thread" remains vague in the spec, so always return
|
1913 |
* the first CPU (gdb returns the first thread). */
|
1914 |
put_packet(s, "QC1");
|
1915 |
break;
|
1916 |
} else if (strcmp(p,"fThreadInfo") == 0) { |
1917 |
s->query_cpu = first_cpu; |
1918 |
goto report_cpuinfo;
|
1919 |
} else if (strcmp(p,"sThreadInfo") == 0) { |
1920 |
report_cpuinfo:
|
1921 |
if (s->query_cpu) {
|
1922 |
snprintf(buf, sizeof(buf), "m%x", gdb_id(s->query_cpu)); |
1923 |
put_packet(s, buf); |
1924 |
s->query_cpu = s->query_cpu->next_cpu; |
1925 |
} else
|
1926 |
put_packet(s, "l");
|
1927 |
break;
|
1928 |
} else if (strncmp(p,"ThreadExtraInfo,", 16) == 0) { |
1929 |
thread = strtoull(p+16, (char **)&p, 16); |
1930 |
env = find_cpu(thread); |
1931 |
if (env != NULL) { |
1932 |
cpu_synchronize_state(env); |
1933 |
len = snprintf((char *)mem_buf, sizeof(mem_buf), |
1934 |
"CPU#%d [%s]", env->cpu_index,
|
1935 |
env->halted ? "halted " : "running"); |
1936 |
memtohex(buf, mem_buf, len); |
1937 |
put_packet(s, buf); |
1938 |
} |
1939 |
break;
|
1940 |
} |
1941 |
#ifdef CONFIG_USER_ONLY
|
1942 |
else if (strncmp(p, "Offsets", 7) == 0) { |
1943 |
TaskState *ts = s->c_cpu->opaque; |
1944 |
|
1945 |
snprintf(buf, sizeof(buf),
|
1946 |
"Text=" TARGET_ABI_FMT_lx ";Data=" TARGET_ABI_FMT_lx |
1947 |
";Bss=" TARGET_ABI_FMT_lx,
|
1948 |
ts->info->code_offset, |
1949 |
ts->info->data_offset, |
1950 |
ts->info->data_offset); |
1951 |
put_packet(s, buf); |
1952 |
break;
|
1953 |
} |
1954 |
#else /* !CONFIG_USER_ONLY */ |
1955 |
else if (strncmp(p, "Rcmd,", 5) == 0) { |
1956 |
int len = strlen(p + 5); |
1957 |
|
1958 |
if ((len % 2) != 0) { |
1959 |
put_packet(s, "E01");
|
1960 |
break;
|
1961 |
} |
1962 |
hextomem(mem_buf, p + 5, len);
|
1963 |
len = len / 2;
|
1964 |
mem_buf[len++] = 0;
|
1965 |
qemu_chr_read(s->mon_chr, mem_buf, len); |
1966 |
put_packet(s, "OK");
|
1967 |
break;
|
1968 |
} |
1969 |
#endif /* !CONFIG_USER_ONLY */ |
1970 |
if (strncmp(p, "Supported", 9) == 0) { |
1971 |
snprintf(buf, sizeof(buf), "PacketSize=%x", MAX_PACKET_LENGTH); |
1972 |
#ifdef GDB_CORE_XML
|
1973 |
pstrcat(buf, sizeof(buf), ";qXfer:features:read+"); |
1974 |
#endif
|
1975 |
put_packet(s, buf); |
1976 |
break;
|
1977 |
} |
1978 |
#ifdef GDB_CORE_XML
|
1979 |
if (strncmp(p, "Xfer:features:read:", 19) == 0) { |
1980 |
const char *xml; |
1981 |
target_ulong total_len; |
1982 |
|
1983 |
gdb_has_xml = 1;
|
1984 |
p += 19;
|
1985 |
xml = get_feature_xml(p, &p); |
1986 |
if (!xml) {
|
1987 |
snprintf(buf, sizeof(buf), "E00"); |
1988 |
put_packet(s, buf); |
1989 |
break;
|
1990 |
} |
1991 |
|
1992 |
if (*p == ':') |
1993 |
p++; |
1994 |
addr = strtoul(p, (char **)&p, 16); |
1995 |
if (*p == ',') |
1996 |
p++; |
1997 |
len = strtoul(p, (char **)&p, 16); |
1998 |
|
1999 |
total_len = strlen(xml); |
2000 |
if (addr > total_len) {
|
2001 |
snprintf(buf, sizeof(buf), "E00"); |
2002 |
put_packet(s, buf); |
2003 |
break;
|
2004 |
} |
2005 |
if (len > (MAX_PACKET_LENGTH - 5) / 2) |
2006 |
len = (MAX_PACKET_LENGTH - 5) / 2; |
2007 |
if (len < total_len - addr) {
|
2008 |
buf[0] = 'm'; |
2009 |
len = memtox(buf + 1, xml + addr, len);
|
2010 |
} else {
|
2011 |
buf[0] = 'l'; |
2012 |
len = memtox(buf + 1, xml + addr, total_len - addr);
|
2013 |
} |
2014 |
put_packet_binary(s, buf, len + 1);
|
2015 |
break;
|
2016 |
} |
2017 |
#endif
|
2018 |
/* Unrecognised 'q' command. */
|
2019 |
goto unknown_command;
|
2020 |
|
2021 |
default:
|
2022 |
unknown_command:
|
2023 |
/* put empty packet */
|
2024 |
buf[0] = '\0'; |
2025 |
put_packet(s, buf); |
2026 |
break;
|
2027 |
} |
2028 |
return RS_IDLE;
|
2029 |
} |
2030 |
|
2031 |
void gdb_set_stop_cpu(CPUState *env)
|
2032 |
{ |
2033 |
gdbserver_state->c_cpu = env; |
2034 |
gdbserver_state->g_cpu = env; |
2035 |
} |
2036 |
|
2037 |
#ifndef CONFIG_USER_ONLY
|
2038 |
static void gdb_vm_state_change(void *opaque, int running, int reason) |
2039 |
{ |
2040 |
GDBState *s = gdbserver_state; |
2041 |
CPUState *env = s->c_cpu; |
2042 |
char buf[256]; |
2043 |
const char *type; |
2044 |
int ret;
|
2045 |
|
2046 |
if (running || (reason != EXCP_DEBUG && reason != EXCP_INTERRUPT) ||
|
2047 |
s->state == RS_INACTIVE || s->state == RS_SYSCALL) |
2048 |
return;
|
2049 |
|
2050 |
/* disable single step if it was enable */
|
2051 |
cpu_single_step(env, 0);
|
2052 |
|
2053 |
if (reason == EXCP_DEBUG) {
|
2054 |
if (env->watchpoint_hit) {
|
2055 |
switch (env->watchpoint_hit->flags & BP_MEM_ACCESS) {
|
2056 |
case BP_MEM_READ:
|
2057 |
type = "r";
|
2058 |
break;
|
2059 |
case BP_MEM_ACCESS:
|
2060 |
type = "a";
|
2061 |
break;
|
2062 |
default:
|
2063 |
type = "";
|
2064 |
break;
|
2065 |
} |
2066 |
snprintf(buf, sizeof(buf),
|
2067 |
"T%02xthread:%02x;%swatch:" TARGET_FMT_lx ";", |
2068 |
GDB_SIGNAL_TRAP, gdb_id(env), type, |
2069 |
env->watchpoint_hit->vaddr); |
2070 |
put_packet(s, buf); |
2071 |
env->watchpoint_hit = NULL;
|
2072 |
return;
|
2073 |
} |
2074 |
tb_flush(env); |
2075 |
ret = GDB_SIGNAL_TRAP; |
2076 |
} else {
|
2077 |
ret = GDB_SIGNAL_INT; |
2078 |
} |
2079 |
snprintf(buf, sizeof(buf), "T%02xthread:%02x;", ret, gdb_id(env)); |
2080 |
put_packet(s, buf); |
2081 |
} |
2082 |
#endif
|
2083 |
|
2084 |
/* Send a gdb syscall request.
|
2085 |
This accepts limited printf-style format specifiers, specifically:
|
2086 |
%x - target_ulong argument printed in hex.
|
2087 |
%lx - 64-bit argument printed in hex.
|
2088 |
%s - string pointer (target_ulong) and length (int) pair. */
|
2089 |
void gdb_do_syscall(gdb_syscall_complete_cb cb, const char *fmt, ...) |
2090 |
{ |
2091 |
va_list va; |
2092 |
char buf[256]; |
2093 |
char *p;
|
2094 |
target_ulong addr; |
2095 |
uint64_t i64; |
2096 |
GDBState *s; |
2097 |
|
2098 |
s = gdbserver_state; |
2099 |
if (!s)
|
2100 |
return;
|
2101 |
gdb_current_syscall_cb = cb; |
2102 |
s->state = RS_SYSCALL; |
2103 |
#ifndef CONFIG_USER_ONLY
|
2104 |
vm_stop(EXCP_DEBUG); |
2105 |
#endif
|
2106 |
s->state = RS_IDLE; |
2107 |
va_start(va, fmt); |
2108 |
p = buf; |
2109 |
*(p++) = 'F';
|
2110 |
while (*fmt) {
|
2111 |
if (*fmt == '%') { |
2112 |
fmt++; |
2113 |
switch (*fmt++) {
|
2114 |
case 'x': |
2115 |
addr = va_arg(va, target_ulong); |
2116 |
p += snprintf(p, &buf[sizeof(buf)] - p, TARGET_FMT_lx, addr);
|
2117 |
break;
|
2118 |
case 'l': |
2119 |
if (*(fmt++) != 'x') |
2120 |
goto bad_format;
|
2121 |
i64 = va_arg(va, uint64_t); |
2122 |
p += snprintf(p, &buf[sizeof(buf)] - p, "%" PRIx64, i64); |
2123 |
break;
|
2124 |
case 's': |
2125 |
addr = va_arg(va, target_ulong); |
2126 |
p += snprintf(p, &buf[sizeof(buf)] - p, TARGET_FMT_lx "/%x", |
2127 |
addr, va_arg(va, int));
|
2128 |
break;
|
2129 |
default:
|
2130 |
bad_format:
|
2131 |
fprintf(stderr, "gdbstub: Bad syscall format string '%s'\n",
|
2132 |
fmt - 1);
|
2133 |
break;
|
2134 |
} |
2135 |
} else {
|
2136 |
*(p++) = *(fmt++); |
2137 |
} |
2138 |
} |
2139 |
*p = 0;
|
2140 |
va_end(va); |
2141 |
put_packet(s, buf); |
2142 |
#ifdef CONFIG_USER_ONLY
|
2143 |
gdb_handlesig(s->c_cpu, 0);
|
2144 |
#else
|
2145 |
cpu_exit(s->c_cpu); |
2146 |
#endif
|
2147 |
} |
2148 |
|
2149 |
static void gdb_read_byte(GDBState *s, int ch) |
2150 |
{ |
2151 |
int i, csum;
|
2152 |
uint8_t reply; |
2153 |
|
2154 |
#ifndef CONFIG_USER_ONLY
|
2155 |
if (s->last_packet_len) {
|
2156 |
/* Waiting for a response to the last packet. If we see the start
|
2157 |
of a new command then abandon the previous response. */
|
2158 |
if (ch == '-') { |
2159 |
#ifdef DEBUG_GDB
|
2160 |
printf("Got NACK, retransmitting\n");
|
2161 |
#endif
|
2162 |
put_buffer(s, (uint8_t *)s->last_packet, s->last_packet_len); |
2163 |
} |
2164 |
#ifdef DEBUG_GDB
|
2165 |
else if (ch == '+') |
2166 |
printf("Got ACK\n");
|
2167 |
else
|
2168 |
printf("Got '%c' when expecting ACK/NACK\n", ch);
|
2169 |
#endif
|
2170 |
if (ch == '+' || ch == '$') |
2171 |
s->last_packet_len = 0;
|
2172 |
if (ch != '$') |
2173 |
return;
|
2174 |
} |
2175 |
if (vm_running) {
|
2176 |
/* when the CPU is running, we cannot do anything except stop
|
2177 |
it when receiving a char */
|
2178 |
vm_stop(EXCP_INTERRUPT); |
2179 |
} else
|
2180 |
#endif
|
2181 |
{ |
2182 |
switch(s->state) {
|
2183 |
case RS_IDLE:
|
2184 |
if (ch == '$') { |
2185 |
s->line_buf_index = 0;
|
2186 |
s->state = RS_GETLINE; |
2187 |
} |
2188 |
break;
|
2189 |
case RS_GETLINE:
|
2190 |
if (ch == '#') { |
2191 |
s->state = RS_CHKSUM1; |
2192 |
} else if (s->line_buf_index >= sizeof(s->line_buf) - 1) { |
2193 |
s->state = RS_IDLE; |
2194 |
} else {
|
2195 |
s->line_buf[s->line_buf_index++] = ch; |
2196 |
} |
2197 |
break;
|
2198 |
case RS_CHKSUM1:
|
2199 |
s->line_buf[s->line_buf_index] = '\0';
|
2200 |
s->line_csum = fromhex(ch) << 4;
|
2201 |
s->state = RS_CHKSUM2; |
2202 |
break;
|
2203 |
case RS_CHKSUM2:
|
2204 |
s->line_csum |= fromhex(ch); |
2205 |
csum = 0;
|
2206 |
for(i = 0; i < s->line_buf_index; i++) { |
2207 |
csum += s->line_buf[i]; |
2208 |
} |
2209 |
if (s->line_csum != (csum & 0xff)) { |
2210 |
reply = '-';
|
2211 |
put_buffer(s, &reply, 1);
|
2212 |
s->state = RS_IDLE; |
2213 |
} else {
|
2214 |
reply = '+';
|
2215 |
put_buffer(s, &reply, 1);
|
2216 |
s->state = gdb_handle_packet(s, s->line_buf); |
2217 |
} |
2218 |
break;
|
2219 |
default:
|
2220 |
abort(); |
2221 |
} |
2222 |
} |
2223 |
} |
2224 |
|
2225 |
#ifdef CONFIG_USER_ONLY
|
2226 |
int
|
2227 |
gdb_queuesig (void)
|
2228 |
{ |
2229 |
GDBState *s; |
2230 |
|
2231 |
s = gdbserver_state; |
2232 |
|
2233 |
if (gdbserver_fd < 0 || s->fd < 0) |
2234 |
return 0; |
2235 |
else
|
2236 |
return 1; |
2237 |
} |
2238 |
|
2239 |
int
|
2240 |
gdb_handlesig (CPUState *env, int sig)
|
2241 |
{ |
2242 |
GDBState *s; |
2243 |
char buf[256]; |
2244 |
int n;
|
2245 |
|
2246 |
s = gdbserver_state; |
2247 |
if (gdbserver_fd < 0 || s->fd < 0) |
2248 |
return sig;
|
2249 |
|
2250 |
/* disable single step if it was enabled */
|
2251 |
cpu_single_step(env, 0);
|
2252 |
tb_flush(env); |
2253 |
|
2254 |
if (sig != 0) |
2255 |
{ |
2256 |
snprintf(buf, sizeof(buf), "S%02x", target_signal_to_gdb (sig)); |
2257 |
put_packet(s, buf); |
2258 |
} |
2259 |
/* put_packet() might have detected that the peer terminated the
|
2260 |
connection. */
|
2261 |
if (s->fd < 0) |
2262 |
return sig;
|
2263 |
|
2264 |
sig = 0;
|
2265 |
s->state = RS_IDLE; |
2266 |
s->running_state = 0;
|
2267 |
while (s->running_state == 0) { |
2268 |
n = read (s->fd, buf, 256);
|
2269 |
if (n > 0) |
2270 |
{ |
2271 |
int i;
|
2272 |
|
2273 |
for (i = 0; i < n; i++) |
2274 |
gdb_read_byte (s, buf[i]); |
2275 |
} |
2276 |
else if (n == 0 || errno != EAGAIN) |
2277 |
{ |
2278 |
/* XXX: Connection closed. Should probably wait for annother
|
2279 |
connection before continuing. */
|
2280 |
return sig;
|
2281 |
} |
2282 |
} |
2283 |
sig = s->signal; |
2284 |
s->signal = 0;
|
2285 |
return sig;
|
2286 |
} |
2287 |
|
2288 |
/* Tell the remote gdb that the process has exited. */
|
2289 |
void gdb_exit(CPUState *env, int code) |
2290 |
{ |
2291 |
GDBState *s; |
2292 |
char buf[4]; |
2293 |
|
2294 |
s = gdbserver_state; |
2295 |
if (gdbserver_fd < 0 || s->fd < 0) |
2296 |
return;
|
2297 |
|
2298 |
snprintf(buf, sizeof(buf), "W%02x", code); |
2299 |
put_packet(s, buf); |
2300 |
} |
2301 |
|
2302 |
/* Tell the remote gdb that the process has exited due to SIG. */
|
2303 |
void gdb_signalled(CPUState *env, int sig) |
2304 |
{ |
2305 |
GDBState *s; |
2306 |
char buf[4]; |
2307 |
|
2308 |
s = gdbserver_state; |
2309 |
if (gdbserver_fd < 0 || s->fd < 0) |
2310 |
return;
|
2311 |
|
2312 |
snprintf(buf, sizeof(buf), "X%02x", target_signal_to_gdb (sig)); |
2313 |
put_packet(s, buf); |
2314 |
} |
2315 |
|
2316 |
static void gdb_accept(void) |
2317 |
{ |
2318 |
GDBState *s; |
2319 |
struct sockaddr_in sockaddr;
|
2320 |
socklen_t len; |
2321 |
int val, fd;
|
2322 |
|
2323 |
for(;;) {
|
2324 |
len = sizeof(sockaddr);
|
2325 |
fd = accept(gdbserver_fd, (struct sockaddr *)&sockaddr, &len);
|
2326 |
if (fd < 0 && errno != EINTR) { |
2327 |
perror("accept");
|
2328 |
return;
|
2329 |
} else if (fd >= 0) { |
2330 |
break;
|
2331 |
} |
2332 |
} |
2333 |
|
2334 |
/* set short latency */
|
2335 |
val = 1;
|
2336 |
setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val)); |
2337 |
|
2338 |
s = qemu_mallocz(sizeof(GDBState));
|
2339 |
s->c_cpu = first_cpu; |
2340 |
s->g_cpu = first_cpu; |
2341 |
s->fd = fd; |
2342 |
gdb_has_xml = 0;
|
2343 |
|
2344 |
gdbserver_state = s; |
2345 |
|
2346 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
2347 |
} |
2348 |
|
2349 |
static int gdbserver_open(int port) |
2350 |
{ |
2351 |
struct sockaddr_in sockaddr;
|
2352 |
int fd, val, ret;
|
2353 |
|
2354 |
fd = socket(PF_INET, SOCK_STREAM, 0);
|
2355 |
if (fd < 0) { |
2356 |
perror("socket");
|
2357 |
return -1; |
2358 |
} |
2359 |
|
2360 |
/* allow fast reuse */
|
2361 |
val = 1;
|
2362 |
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val)); |
2363 |
|
2364 |
sockaddr.sin_family = AF_INET; |
2365 |
sockaddr.sin_port = htons(port); |
2366 |
sockaddr.sin_addr.s_addr = 0;
|
2367 |
ret = bind(fd, (struct sockaddr *)&sockaddr, sizeof(sockaddr)); |
2368 |
if (ret < 0) { |
2369 |
perror("bind");
|
2370 |
return -1; |
2371 |
} |
2372 |
ret = listen(fd, 0);
|
2373 |
if (ret < 0) { |
2374 |
perror("listen");
|
2375 |
return -1; |
2376 |
} |
2377 |
return fd;
|
2378 |
} |
2379 |
|
2380 |
int gdbserver_start(int port) |
2381 |
{ |
2382 |
gdbserver_fd = gdbserver_open(port); |
2383 |
if (gdbserver_fd < 0) |
2384 |
return -1; |
2385 |
/* accept connections */
|
2386 |
gdb_accept(); |
2387 |
return 0; |
2388 |
} |
2389 |
|
2390 |
/* Disable gdb stub for child processes. */
|
2391 |
void gdbserver_fork(CPUState *env)
|
2392 |
{ |
2393 |
GDBState *s = gdbserver_state; |
2394 |
if (gdbserver_fd < 0 || s->fd < 0) |
2395 |
return;
|
2396 |
close(s->fd); |
2397 |
s->fd = -1;
|
2398 |
cpu_breakpoint_remove_all(env, BP_GDB); |
2399 |
cpu_watchpoint_remove_all(env, BP_GDB); |
2400 |
} |
2401 |
#else
|
2402 |
static int gdb_chr_can_receive(void *opaque) |
2403 |
{ |
2404 |
/* We can handle an arbitrarily large amount of data.
|
2405 |
Pick the maximum packet size, which is as good as anything. */
|
2406 |
return MAX_PACKET_LENGTH;
|
2407 |
} |
2408 |
|
2409 |
static void gdb_chr_receive(void *opaque, const uint8_t *buf, int size) |
2410 |
{ |
2411 |
int i;
|
2412 |
|
2413 |
for (i = 0; i < size; i++) { |
2414 |
gdb_read_byte(gdbserver_state, buf[i]); |
2415 |
} |
2416 |
} |
2417 |
|
2418 |
static void gdb_chr_event(void *opaque, int event) |
2419 |
{ |
2420 |
switch (event) {
|
2421 |
case CHR_EVENT_RESET:
|
2422 |
vm_stop(EXCP_INTERRUPT); |
2423 |
gdb_has_xml = 0;
|
2424 |
break;
|
2425 |
default:
|
2426 |
break;
|
2427 |
} |
2428 |
} |
2429 |
|
2430 |
static void gdb_monitor_output(GDBState *s, const char *msg, int len) |
2431 |
{ |
2432 |
char buf[MAX_PACKET_LENGTH];
|
2433 |
|
2434 |
buf[0] = 'O'; |
2435 |
if (len > (MAX_PACKET_LENGTH/2) - 1) |
2436 |
len = (MAX_PACKET_LENGTH/2) - 1; |
2437 |
memtohex(buf + 1, (uint8_t *)msg, len);
|
2438 |
put_packet(s, buf); |
2439 |
} |
2440 |
|
2441 |
static int gdb_monitor_write(CharDriverState *chr, const uint8_t *buf, int len) |
2442 |
{ |
2443 |
const char *p = (const char *)buf; |
2444 |
int max_sz;
|
2445 |
|
2446 |
max_sz = (sizeof(gdbserver_state->last_packet) - 2) / 2; |
2447 |
for (;;) {
|
2448 |
if (len <= max_sz) {
|
2449 |
gdb_monitor_output(gdbserver_state, p, len); |
2450 |
break;
|
2451 |
} |
2452 |
gdb_monitor_output(gdbserver_state, p, max_sz); |
2453 |
p += max_sz; |
2454 |
len -= max_sz; |
2455 |
} |
2456 |
return len;
|
2457 |
} |
2458 |
|
2459 |
#ifndef _WIN32
|
2460 |
static void gdb_sigterm_handler(int signal) |
2461 |
{ |
2462 |
if (vm_running)
|
2463 |
vm_stop(EXCP_INTERRUPT); |
2464 |
} |
2465 |
#endif
|
2466 |
|
2467 |
int gdbserver_start(const char *device) |
2468 |
{ |
2469 |
GDBState *s; |
2470 |
char gdbstub_device_name[128]; |
2471 |
CharDriverState *chr = NULL;
|
2472 |
CharDriverState *mon_chr; |
2473 |
|
2474 |
if (!device)
|
2475 |
return -1; |
2476 |
if (strcmp(device, "none") != 0) { |
2477 |
if (strstart(device, "tcp:", NULL)) { |
2478 |
/* enforce required TCP attributes */
|
2479 |
snprintf(gdbstub_device_name, sizeof(gdbstub_device_name),
|
2480 |
"%s,nowait,nodelay,server", device);
|
2481 |
device = gdbstub_device_name; |
2482 |
} |
2483 |
#ifndef _WIN32
|
2484 |
else if (strcmp(device, "stdio") == 0) { |
2485 |
struct sigaction act;
|
2486 |
|
2487 |
memset(&act, 0, sizeof(act)); |
2488 |
act.sa_handler = gdb_sigterm_handler; |
2489 |
sigaction(SIGINT, &act, NULL);
|
2490 |
} |
2491 |
#endif
|
2492 |
chr = qemu_chr_open("gdb", device, NULL); |
2493 |
if (!chr)
|
2494 |
return -1; |
2495 |
|
2496 |
qemu_chr_add_handlers(chr, gdb_chr_can_receive, gdb_chr_receive, |
2497 |
gdb_chr_event, NULL);
|
2498 |
} |
2499 |
|
2500 |
s = gdbserver_state; |
2501 |
if (!s) {
|
2502 |
s = qemu_mallocz(sizeof(GDBState));
|
2503 |
gdbserver_state = s; |
2504 |
|
2505 |
qemu_add_vm_change_state_handler(gdb_vm_state_change, NULL);
|
2506 |
|
2507 |
/* Initialize a monitor terminal for gdb */
|
2508 |
mon_chr = qemu_mallocz(sizeof(*mon_chr));
|
2509 |
mon_chr->chr_write = gdb_monitor_write; |
2510 |
monitor_init(mon_chr, 0);
|
2511 |
} else {
|
2512 |
if (s->chr)
|
2513 |
qemu_chr_close(s->chr); |
2514 |
mon_chr = s->mon_chr; |
2515 |
memset(s, 0, sizeof(GDBState)); |
2516 |
} |
2517 |
s->c_cpu = first_cpu; |
2518 |
s->g_cpu = first_cpu; |
2519 |
s->chr = chr; |
2520 |
s->state = chr ? RS_IDLE : RS_INACTIVE; |
2521 |
s->mon_chr = mon_chr; |
2522 |
|
2523 |
return 0; |
2524 |
} |
2525 |
#endif
|