1969 lines
66 KiB
C
1969 lines
66 KiB
C
/*
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* A Win32 based proxy implementing the GBD remote protocol
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* This allows to debug Wine (and any "emulated" program) under
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* Linux using GDB
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*
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* Copyright (c) Eric Pouech 2002-2004
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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 2.1 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* Protocol specification can be found here:
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* http://sources.redhat.com/gdb/onlinedocs/gdb_32.html
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <assert.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/poll.h>
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#include <sys/wait.h>
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#ifdef HAVE_SYS_SOCKET_H
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# include <sys/socket.h>
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#endif
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include "windef.h"
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#include "winbase.h"
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#include "tlhelp32.h"
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/* those two are needed only for the SHOWNORMAL flag */
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#include "wingdi.h"
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#include "winuser.h"
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#include "debugger.h"
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#define GDBPXY_TRC_LOWLEVEL 0x01
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#define GDBPXY_TRC_PACKET 0x02
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#define GDBPXY_TRC_COMMAND 0x04
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#define GDBPXY_TRC_COMMAND_ERROR 0x08
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#define GDBPXY_TRC_WIN32_EVENT 0x10
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#define GDBPXY_TRC_WIN32_ERROR 0x20
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#define GDBPXY_TRC_COMMAND_FIXME 0x80
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struct gdb_ctx_Xpoint
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{
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enum be_xpoint_type type; /* -1 means free */
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void* addr;
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unsigned long val;
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};
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struct gdb_context
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{
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/* gdb information */
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int sock;
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/* incoming buffer */
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char* in_buf;
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int in_buf_alloc;
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int in_len;
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/* split into individual packet */
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char* in_packet;
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int in_packet_len;
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/* outgoing buffer */
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char* out_buf;
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int out_buf_alloc;
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int out_len;
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int out_curr_packet;
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/* generic GDB thread information */
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struct dbg_thread* exec_thread; /* thread used in step & continue */
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struct dbg_thread* other_thread; /* thread to be used in any other operation */
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unsigned trace;
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/* current Win32 trap env */
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unsigned last_sig;
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BOOL in_trap;
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CONTEXT context;
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/* Win32 information */
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struct dbg_process* process;
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#define NUM_XPOINT 32
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struct gdb_ctx_Xpoint Xpoints[NUM_XPOINT];
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/* Unix environment */
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unsigned long wine_segs[3]; /* load addresses of the ELF wine exec segments (text, bss and data) */
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};
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/* =============================================== *
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* B A S I C M A N I P U L A T I O N S *
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* =============================================== *
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*/
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static inline int hex_from0(char ch)
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{
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if (ch >= '0' && ch <= '9') return ch - '0';
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if (ch >= 'A' && ch <= 'F') return ch - 'A' + 10;
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if (ch >= 'a' && ch <= 'f') return ch - 'a' + 10;
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assert(0);
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return 0;
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}
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static inline unsigned char hex_to0(int x)
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{
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assert(x >= 0 && x < 16);
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return "0123456789abcdef"[x];
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}
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static void hex_from(void* dst, const char* src, size_t len)
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{
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unsigned char *p = dst;
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while (len--)
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{
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*p++ = (hex_from0(src[0]) << 4) | hex_from0(src[1]);
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src += 2;
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}
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}
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static void hex_to(char* dst, const void* src, size_t len)
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{
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const unsigned char *p = src;
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while (len--)
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{
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*dst++ = hex_to0(*p >> 4);
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*dst++ = hex_to0(*p & 0x0F);
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p++;
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}
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}
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static unsigned char checksum(const char* ptr, int len)
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{
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unsigned cksum = 0;
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while (len-- > 0)
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cksum += (unsigned char)*ptr++;
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return cksum;
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}
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/* =============================================== *
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* C P U H A N D L E R S *
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* =============================================== *
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*/
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#ifdef __i386__
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static size_t cpu_register_map[] = {
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FIELD_OFFSET(CONTEXT, Eax),
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FIELD_OFFSET(CONTEXT, Ecx),
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FIELD_OFFSET(CONTEXT, Edx),
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FIELD_OFFSET(CONTEXT, Ebx),
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FIELD_OFFSET(CONTEXT, Esp),
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FIELD_OFFSET(CONTEXT, Ebp),
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FIELD_OFFSET(CONTEXT, Esi),
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FIELD_OFFSET(CONTEXT, Edi),
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FIELD_OFFSET(CONTEXT, Eip),
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FIELD_OFFSET(CONTEXT, EFlags),
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FIELD_OFFSET(CONTEXT, SegCs),
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FIELD_OFFSET(CONTEXT, SegSs),
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FIELD_OFFSET(CONTEXT, SegDs),
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FIELD_OFFSET(CONTEXT, SegEs),
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FIELD_OFFSET(CONTEXT, SegFs),
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FIELD_OFFSET(CONTEXT, SegGs),
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};
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#elif defined(__powerpc__)
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static size_t cpu_register_map[] = {
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FIELD_OFFSET(CONTEXT, Gpr0),
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FIELD_OFFSET(CONTEXT, Gpr1),
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FIELD_OFFSET(CONTEXT, Gpr2),
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FIELD_OFFSET(CONTEXT, Gpr3),
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FIELD_OFFSET(CONTEXT, Gpr4),
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FIELD_OFFSET(CONTEXT, Gpr5),
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FIELD_OFFSET(CONTEXT, Gpr6),
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FIELD_OFFSET(CONTEXT, Gpr7),
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FIELD_OFFSET(CONTEXT, Gpr8),
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FIELD_OFFSET(CONTEXT, Gpr9),
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FIELD_OFFSET(CONTEXT, Gpr10),
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FIELD_OFFSET(CONTEXT, Gpr11),
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FIELD_OFFSET(CONTEXT, Gpr12),
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FIELD_OFFSET(CONTEXT, Gpr13),
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FIELD_OFFSET(CONTEXT, Gpr14),
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FIELD_OFFSET(CONTEXT, Gpr15),
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FIELD_OFFSET(CONTEXT, Gpr16),
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FIELD_OFFSET(CONTEXT, Gpr17),
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FIELD_OFFSET(CONTEXT, Gpr18),
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FIELD_OFFSET(CONTEXT, Gpr19),
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FIELD_OFFSET(CONTEXT, Gpr20),
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FIELD_OFFSET(CONTEXT, Gpr21),
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FIELD_OFFSET(CONTEXT, Gpr22),
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FIELD_OFFSET(CONTEXT, Gpr23),
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FIELD_OFFSET(CONTEXT, Gpr24),
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FIELD_OFFSET(CONTEXT, Gpr25),
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FIELD_OFFSET(CONTEXT, Gpr26),
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FIELD_OFFSET(CONTEXT, Gpr27),
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FIELD_OFFSET(CONTEXT, Gpr28),
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FIELD_OFFSET(CONTEXT, Gpr29),
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FIELD_OFFSET(CONTEXT, Gpr30),
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FIELD_OFFSET(CONTEXT, Gpr31),
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FIELD_OFFSET(CONTEXT, Fpr0),
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FIELD_OFFSET(CONTEXT, Fpr1),
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FIELD_OFFSET(CONTEXT, Fpr2),
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FIELD_OFFSET(CONTEXT, Fpr3),
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FIELD_OFFSET(CONTEXT, Fpr4),
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FIELD_OFFSET(CONTEXT, Fpr5),
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FIELD_OFFSET(CONTEXT, Fpr6),
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FIELD_OFFSET(CONTEXT, Fpr7),
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FIELD_OFFSET(CONTEXT, Fpr8),
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FIELD_OFFSET(CONTEXT, Fpr9),
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FIELD_OFFSET(CONTEXT, Fpr10),
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FIELD_OFFSET(CONTEXT, Fpr11),
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FIELD_OFFSET(CONTEXT, Fpr12),
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FIELD_OFFSET(CONTEXT, Fpr13),
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FIELD_OFFSET(CONTEXT, Fpr14),
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FIELD_OFFSET(CONTEXT, Fpr15),
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FIELD_OFFSET(CONTEXT, Fpr16),
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FIELD_OFFSET(CONTEXT, Fpr17),
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FIELD_OFFSET(CONTEXT, Fpr18),
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FIELD_OFFSET(CONTEXT, Fpr19),
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FIELD_OFFSET(CONTEXT, Fpr20),
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FIELD_OFFSET(CONTEXT, Fpr21),
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FIELD_OFFSET(CONTEXT, Fpr22),
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FIELD_OFFSET(CONTEXT, Fpr23),
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FIELD_OFFSET(CONTEXT, Fpr24),
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FIELD_OFFSET(CONTEXT, Fpr25),
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FIELD_OFFSET(CONTEXT, Fpr26),
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FIELD_OFFSET(CONTEXT, Fpr27),
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FIELD_OFFSET(CONTEXT, Fpr28),
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FIELD_OFFSET(CONTEXT, Fpr29),
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FIELD_OFFSET(CONTEXT, Fpr30),
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FIELD_OFFSET(CONTEXT, Fpr31),
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FIELD_OFFSET(CONTEXT, Iar),
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FIELD_OFFSET(CONTEXT, Msr),
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FIELD_OFFSET(CONTEXT, Cr),
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FIELD_OFFSET(CONTEXT, Lr),
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FIELD_OFFSET(CONTEXT, Ctr),
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FIELD_OFFSET(CONTEXT, Xer),
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/* FIXME: MQ is missing? FIELD_OFFSET(CONTEXT, Mq), */
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/* see gdb/nlm/ppc.c */
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};
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#elif defined(__ALPHA__)
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static size_t cpu_register_map[] = {
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FIELD_OFFSET(CONTEXT, IntV0),
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FIELD_OFFSET(CONTEXT, IntT0),
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FIELD_OFFSET(CONTEXT, IntT1),
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FIELD_OFFSET(CONTEXT, IntT2),
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FIELD_OFFSET(CONTEXT, IntT3),
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FIELD_OFFSET(CONTEXT, IntT4),
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FIELD_OFFSET(CONTEXT, IntT5),
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FIELD_OFFSET(CONTEXT, IntT6),
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FIELD_OFFSET(CONTEXT, IntT7),
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FIELD_OFFSET(CONTEXT, IntS0),
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FIELD_OFFSET(CONTEXT, IntS1),
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FIELD_OFFSET(CONTEXT, IntS2),
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FIELD_OFFSET(CONTEXT, IntS3),
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FIELD_OFFSET(CONTEXT, IntS4),
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FIELD_OFFSET(CONTEXT, IntS5),
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FIELD_OFFSET(CONTEXT, IntFp),
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FIELD_OFFSET(CONTEXT, IntA0),
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FIELD_OFFSET(CONTEXT, IntA1),
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FIELD_OFFSET(CONTEXT, IntA2),
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FIELD_OFFSET(CONTEXT, IntA3),
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FIELD_OFFSET(CONTEXT, IntA4),
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FIELD_OFFSET(CONTEXT, IntA5),
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FIELD_OFFSET(CONTEXT, IntT8),
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FIELD_OFFSET(CONTEXT, IntT9),
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FIELD_OFFSET(CONTEXT, IntT10),
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FIELD_OFFSET(CONTEXT, IntT11),
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FIELD_OFFSET(CONTEXT, IntRa),
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FIELD_OFFSET(CONTEXT, IntT12),
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FIELD_OFFSET(CONTEXT, IntAt),
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FIELD_OFFSET(CONTEXT, IntGp),
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FIELD_OFFSET(CONTEXT, IntSp),
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FIELD_OFFSET(CONTEXT, IntZero),
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FIELD_OFFSET(CONTEXT, FltF0),
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FIELD_OFFSET(CONTEXT, FltF1),
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FIELD_OFFSET(CONTEXT, FltF2),
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FIELD_OFFSET(CONTEXT, FltF3),
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FIELD_OFFSET(CONTEXT, FltF4),
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FIELD_OFFSET(CONTEXT, FltF5),
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FIELD_OFFSET(CONTEXT, FltF6),
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FIELD_OFFSET(CONTEXT, FltF7),
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FIELD_OFFSET(CONTEXT, FltF8),
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FIELD_OFFSET(CONTEXT, FltF9),
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FIELD_OFFSET(CONTEXT, FltF10),
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FIELD_OFFSET(CONTEXT, FltF11),
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FIELD_OFFSET(CONTEXT, FltF12),
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FIELD_OFFSET(CONTEXT, FltF13),
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FIELD_OFFSET(CONTEXT, FltF14),
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FIELD_OFFSET(CONTEXT, FltF15),
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FIELD_OFFSET(CONTEXT, FltF16),
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FIELD_OFFSET(CONTEXT, FltF17),
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FIELD_OFFSET(CONTEXT, FltF18),
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FIELD_OFFSET(CONTEXT, FltF19),
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FIELD_OFFSET(CONTEXT, FltF20),
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FIELD_OFFSET(CONTEXT, FltF21),
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FIELD_OFFSET(CONTEXT, FltF22),
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FIELD_OFFSET(CONTEXT, FltF23),
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FIELD_OFFSET(CONTEXT, FltF24),
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FIELD_OFFSET(CONTEXT, FltF25),
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FIELD_OFFSET(CONTEXT, FltF26),
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FIELD_OFFSET(CONTEXT, FltF27),
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FIELD_OFFSET(CONTEXT, FltF28),
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FIELD_OFFSET(CONTEXT, FltF29),
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FIELD_OFFSET(CONTEXT, FltF30),
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FIELD_OFFSET(CONTEXT, FltF31),
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/* FIXME: Didn't look for the right order yet */
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FIELD_OFFSET(CONTEXT, Fir),
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FIELD_OFFSET(CONTEXT, Fpcr),
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FIELD_OFFSET(CONTEXT, SoftFpcr),
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};
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#else
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# error Define the registers map for your CPU
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#endif
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static const size_t cpu_num_regs = (sizeof(cpu_register_map) / sizeof(cpu_register_map[0]));
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static inline unsigned long* cpu_register(CONTEXT* ctx, unsigned idx)
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{
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assert(idx < cpu_num_regs);
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return (unsigned long*)((char*)ctx + cpu_register_map[idx]);
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}
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/* =============================================== *
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* W I N 3 2 D E B U G I N T E R F A C E *
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* =============================================== *
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*/
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static BOOL fetch_context(struct gdb_context* gdbctx, HANDLE h, CONTEXT* ctx)
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{
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ctx->ContextFlags = CONTEXT_CONTROL
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| CONTEXT_INTEGER
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#ifdef CONTEXT_SEGMENTS
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| CONTEXT_SEGMENTS
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#endif
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#ifdef CONTEXT_DEBUG_REGISTERS
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| CONTEXT_DEBUG_REGISTERS
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#endif
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;
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if (!GetThreadContext(h, ctx))
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{
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if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
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fprintf(stderr, "Can't get thread's context\n");
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return FALSE;
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}
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return TRUE;
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}
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static BOOL handle_exception(struct gdb_context* gdbctx, EXCEPTION_DEBUG_INFO* exc)
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{
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EXCEPTION_RECORD* rec = &exc->ExceptionRecord;
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BOOL ret = FALSE;
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switch (rec->ExceptionCode)
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{
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case EXCEPTION_ACCESS_VIOLATION:
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case EXCEPTION_PRIV_INSTRUCTION:
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case EXCEPTION_STACK_OVERFLOW:
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case EXCEPTION_GUARD_PAGE:
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gdbctx->last_sig = SIGSEGV;
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ret = TRUE;
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break;
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case EXCEPTION_DATATYPE_MISALIGNMENT:
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gdbctx->last_sig = SIGBUS;
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ret = TRUE;
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break;
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case EXCEPTION_SINGLE_STEP:
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/* fall thru */
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case EXCEPTION_BREAKPOINT:
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gdbctx->last_sig = SIGTRAP;
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ret = TRUE;
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break;
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case EXCEPTION_FLT_DENORMAL_OPERAND:
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case EXCEPTION_FLT_DIVIDE_BY_ZERO:
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case EXCEPTION_FLT_INEXACT_RESULT:
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case EXCEPTION_FLT_INVALID_OPERATION:
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case EXCEPTION_FLT_OVERFLOW:
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case EXCEPTION_FLT_STACK_CHECK:
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case EXCEPTION_FLT_UNDERFLOW:
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gdbctx->last_sig = SIGFPE;
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ret = TRUE;
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break;
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case EXCEPTION_INT_DIVIDE_BY_ZERO:
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case EXCEPTION_INT_OVERFLOW:
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gdbctx->last_sig = SIGFPE;
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ret = TRUE;
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break;
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case EXCEPTION_ILLEGAL_INSTRUCTION:
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gdbctx->last_sig = SIGILL;
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ret = TRUE;
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break;
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case CONTROL_C_EXIT:
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gdbctx->last_sig = SIGINT;
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ret = TRUE;
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break;
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case STATUS_POSSIBLE_DEADLOCK:
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gdbctx->last_sig = SIGALRM;
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ret = TRUE;
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/* FIXME: we could also add here a O packet with additional information */
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break;
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default:
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if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
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fprintf(stderr, "Unhandled exception code 0x%08lx\n", rec->ExceptionCode);
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gdbctx->last_sig = SIGABRT;
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ret = TRUE;
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break;
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}
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return ret;
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}
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static void handle_debug_event(struct gdb_context* gdbctx, DEBUG_EVENT* de)
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{
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char buffer[256];
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dbg_curr_thread = dbg_get_thread(gdbctx->process, de->dwThreadId);
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switch (de->dwDebugEventCode)
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{
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case CREATE_PROCESS_DEBUG_EVENT:
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memory_get_string_indirect(de->u.CreateProcessInfo.hProcess,
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de->u.CreateProcessInfo.lpImageName,
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de->u.CreateProcessInfo.fUnicode,
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buffer, sizeof(buffer));
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if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
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fprintf(stderr, "%08lx:%08lx: create process '%s'/%p @%08lx (%ld<%ld>)\n",
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de->dwProcessId, de->dwThreadId,
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buffer, de->u.CreateProcessInfo.lpImageName,
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(unsigned long)(void*)de->u.CreateProcessInfo.lpStartAddress,
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de->u.CreateProcessInfo.dwDebugInfoFileOffset,
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de->u.CreateProcessInfo.nDebugInfoSize);
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gdbctx->process = dbg_add_process(de->dwProcessId,
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de->u.CreateProcessInfo.hProcess,
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buffer);
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/* de->u.CreateProcessInfo.lpStartAddress; */
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if (!SymInitialize(gdbctx->process->handle, NULL, TRUE))
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fprintf(stderr, "Couldn't initiate DbgHelp\n");
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if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
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fprintf(stderr, "%08lx:%08lx: create thread I @%08lx\n",
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de->dwProcessId, de->dwThreadId,
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(unsigned long)(void*)de->u.CreateProcessInfo.lpStartAddress);
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assert(dbg_curr_thread == NULL); /* shouldn't be there */
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dbg_add_thread(gdbctx->process, de->dwThreadId,
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de->u.CreateProcessInfo.hThread,
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de->u.CreateProcessInfo.lpThreadLocalBase);
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break;
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case LOAD_DLL_DEBUG_EVENT:
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assert(dbg_curr_thread);
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memory_get_string_indirect(gdbctx->process->handle,
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de->u.LoadDll.lpImageName,
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de->u.LoadDll.fUnicode,
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buffer, sizeof(buffer));
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if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
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fprintf(stderr, "%08lx:%08lx: loads DLL %s @%08lx (%ld<%ld>)\n",
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de->dwProcessId, de->dwThreadId,
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buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll,
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de->u.LoadDll.dwDebugInfoFileOffset,
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de->u.LoadDll.nDebugInfoSize);
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SymLoadModule(gdbctx->process->handle, de->u.LoadDll.hFile, buffer, NULL,
|
|
(unsigned long)de->u.LoadDll.lpBaseOfDll, 0);
|
|
break;
|
|
|
|
case UNLOAD_DLL_DEBUG_EVENT:
|
|
if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
|
|
fprintf(stderr, "%08lx:%08lx: unload DLL @%08lx\n",
|
|
de->dwProcessId, de->dwThreadId, (unsigned long)de->u.UnloadDll.lpBaseOfDll);
|
|
SymUnloadModule(gdbctx->process->handle,
|
|
(unsigned long)de->u.UnloadDll.lpBaseOfDll);
|
|
break;
|
|
|
|
case EXCEPTION_DEBUG_EVENT:
|
|
assert(dbg_curr_thread);
|
|
if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
|
|
fprintf(stderr, "%08lx:%08lx: exception code=0x%08lx\n",
|
|
de->dwProcessId, de->dwThreadId,
|
|
de->u.Exception.ExceptionRecord.ExceptionCode);
|
|
|
|
if (fetch_context(gdbctx, dbg_curr_thread->handle, &gdbctx->context))
|
|
{
|
|
gdbctx->in_trap = handle_exception(gdbctx, &de->u.Exception);
|
|
}
|
|
break;
|
|
|
|
case CREATE_THREAD_DEBUG_EVENT:
|
|
if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
|
|
fprintf(stderr, "%08lx:%08lx: create thread D @%08lx\n",
|
|
de->dwProcessId, de->dwThreadId, (unsigned long)(void*)de->u.CreateThread.lpStartAddress);
|
|
|
|
dbg_add_thread(gdbctx->process,
|
|
de->dwThreadId,
|
|
de->u.CreateThread.hThread,
|
|
de->u.CreateThread.lpThreadLocalBase);
|
|
break;
|
|
|
|
case EXIT_THREAD_DEBUG_EVENT:
|
|
if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
|
|
fprintf(stderr, "%08lx:%08lx: exit thread (%ld)\n",
|
|
de->dwProcessId, de->dwThreadId, de->u.ExitThread.dwExitCode);
|
|
|
|
assert(dbg_curr_thread);
|
|
if (dbg_curr_thread == gdbctx->exec_thread) gdbctx->exec_thread = NULL;
|
|
if (dbg_curr_thread == gdbctx->other_thread) gdbctx->other_thread = NULL;
|
|
dbg_del_thread(dbg_curr_thread);
|
|
break;
|
|
|
|
case EXIT_PROCESS_DEBUG_EVENT:
|
|
if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
|
|
fprintf(stderr, "%08lx:%08lx: exit process (%ld)\n",
|
|
de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode);
|
|
|
|
dbg_del_process(gdbctx->process);
|
|
gdbctx->process = NULL;
|
|
/* now signal gdb that we're done */
|
|
gdbctx->last_sig = SIGTERM;
|
|
gdbctx->in_trap = TRUE;
|
|
break;
|
|
|
|
case OUTPUT_DEBUG_STRING_EVENT:
|
|
assert(dbg_curr_thread);
|
|
memory_get_string(gdbctx->process->handle,
|
|
de->u.DebugString.lpDebugStringData, TRUE,
|
|
de->u.DebugString.fUnicode, buffer, sizeof(buffer));
|
|
if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
|
|
fprintf(stderr, "%08lx:%08lx: output debug string (%s)\n",
|
|
de->dwProcessId, de->dwThreadId, buffer);
|
|
break;
|
|
|
|
case RIP_EVENT:
|
|
if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
|
|
fprintf(stderr, "%08lx:%08lx: rip error=%ld type=%ld\n",
|
|
de->dwProcessId, de->dwThreadId, de->u.RipInfo.dwError,
|
|
de->u.RipInfo.dwType);
|
|
break;
|
|
|
|
default:
|
|
if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
|
|
fprintf(stderr, "%08lx:%08lx: unknown event (%ld)\n",
|
|
de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
|
|
}
|
|
}
|
|
|
|
static void resume_debuggee(struct gdb_context* gdbctx, unsigned long cont)
|
|
{
|
|
if (dbg_curr_thread)
|
|
{
|
|
if (!SetThreadContext(dbg_curr_thread->handle, &gdbctx->context))
|
|
if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
|
|
fprintf(stderr, "Cannot set context on thread %lu\n", dbg_curr_thread->tid);
|
|
if (!ContinueDebugEvent(gdbctx->process->pid, dbg_curr_thread->tid, cont))
|
|
if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
|
|
fprintf(stderr, "Cannot continue on %lu (%lu)\n",
|
|
dbg_curr_thread->tid, cont);
|
|
}
|
|
else if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
|
|
fprintf(stderr, "Cannot find last thread (%lu)\n", dbg_curr_thread->tid);
|
|
}
|
|
|
|
static void wait_for_debuggee(struct gdb_context* gdbctx)
|
|
{
|
|
DEBUG_EVENT de;
|
|
|
|
gdbctx->in_trap = FALSE;
|
|
while (WaitForDebugEvent(&de, INFINITE))
|
|
{
|
|
handle_debug_event(gdbctx, &de);
|
|
assert(!gdbctx->process ||
|
|
gdbctx->process->pid == 0 ||
|
|
de.dwProcessId == gdbctx->process->pid);
|
|
assert(!dbg_curr_thread || de.dwThreadId == dbg_curr_thread->tid);
|
|
if (gdbctx->in_trap) break;
|
|
ContinueDebugEvent(de.dwProcessId, de.dwThreadId, DBG_CONTINUE);
|
|
}
|
|
}
|
|
|
|
static void detach_debuggee(struct gdb_context* gdbctx, BOOL kill)
|
|
{
|
|
be_cpu->single_step(&gdbctx->context, FALSE);
|
|
resume_debuggee(gdbctx, DBG_CONTINUE);
|
|
if (!kill)
|
|
DebugActiveProcessStop(gdbctx->process->pid);
|
|
dbg_del_process(gdbctx->process);
|
|
gdbctx->process = NULL;
|
|
}
|
|
|
|
static void get_process_info(struct gdb_context* gdbctx, char* buffer, size_t len)
|
|
{
|
|
unsigned long status;
|
|
|
|
if (!GetExitCodeProcess(gdbctx->process->handle, &status))
|
|
{
|
|
strcpy(buffer, "Unknown process");
|
|
return;
|
|
}
|
|
if (status == STILL_ACTIVE)
|
|
{
|
|
strcpy(buffer, "Running");
|
|
}
|
|
else
|
|
snprintf(buffer, len, "Terminated (%lu)", status);
|
|
|
|
switch (GetPriorityClass(gdbctx->process->handle))
|
|
{
|
|
case 0: break;
|
|
#ifdef ABOVE_NORMAL_PRIORITY_CLASS
|
|
case ABOVE_NORMAL_PRIORITY_CLASS: strcat(buffer, ", above normal priority"); break;
|
|
#endif
|
|
#ifdef BELOW_NORMAL_PRIORITY_CLASS
|
|
case BELOW_NORMAL_PRIORITY_CLASS: strcat(buffer, ", below normal priotity"); break;
|
|
#endif
|
|
case HIGH_PRIORITY_CLASS: strcat(buffer, ", high priority"); break;
|
|
case IDLE_PRIORITY_CLASS: strcat(buffer, ", idle priority"); break;
|
|
case NORMAL_PRIORITY_CLASS: strcat(buffer, ", normal priority"); break;
|
|
case REALTIME_PRIORITY_CLASS: strcat(buffer, ", realtime priority"); break;
|
|
}
|
|
strcat(buffer, "\n");
|
|
}
|
|
|
|
static void get_thread_info(struct gdb_context* gdbctx, unsigned tid,
|
|
char* buffer, size_t len)
|
|
{
|
|
struct dbg_thread* thd;
|
|
unsigned long status;
|
|
int prio;
|
|
|
|
/* FIXME: use the size of buffer */
|
|
thd = dbg_get_thread(gdbctx->process, tid);
|
|
if (thd == NULL)
|
|
{
|
|
strcpy(buffer, "No information");
|
|
return;
|
|
}
|
|
if (GetExitCodeThread(thd->handle, &status))
|
|
{
|
|
if (status == STILL_ACTIVE)
|
|
{
|
|
/* FIXME: this is a bit brutal... some nicer way shall be found */
|
|
switch (status = SuspendThread(thd->handle))
|
|
{
|
|
case -1: break;
|
|
case 0: strcpy(buffer, "Running"); break;
|
|
default: snprintf(buffer, len, "Suspended (%lu)", status - 1);
|
|
}
|
|
ResumeThread(thd->handle);
|
|
}
|
|
else
|
|
snprintf(buffer, len, "Terminated (exit code = %lu)", status);
|
|
}
|
|
else
|
|
{
|
|
strcpy(buffer, "Unknown threadID");
|
|
}
|
|
switch (prio = GetThreadPriority(thd->handle))
|
|
{
|
|
case THREAD_PRIORITY_ERROR_RETURN: break;
|
|
case THREAD_PRIORITY_ABOVE_NORMAL: strcat(buffer, ", priority +1 above normal"); break;
|
|
case THREAD_PRIORITY_BELOW_NORMAL: strcat(buffer, ", priority -1 below normal"); break;
|
|
case THREAD_PRIORITY_HIGHEST: strcat(buffer, ", priority +2 above normal"); break;
|
|
case THREAD_PRIORITY_LOWEST: strcat(buffer, ", priority -2 below normal"); break;
|
|
case THREAD_PRIORITY_IDLE: strcat(buffer, ", priority idle"); break;
|
|
case THREAD_PRIORITY_NORMAL: strcat(buffer, ", priority normal"); break;
|
|
case THREAD_PRIORITY_TIME_CRITICAL: strcat(buffer, ", priority time-critical"); break;
|
|
default: snprintf(buffer + strlen(buffer), len - strlen(buffer), ", priority = %d", prio);
|
|
}
|
|
assert(strlen(buffer) < len);
|
|
}
|
|
|
|
/* =============================================== *
|
|
* P A C K E T U T I L S *
|
|
* =============================================== *
|
|
*/
|
|
|
|
enum packet_return {packet_error = 0x00, packet_ok = 0x01, packet_done = 0x02,
|
|
packet_last_f = 0x80};
|
|
|
|
static void packet_reply_grow(struct gdb_context* gdbctx, size_t size)
|
|
{
|
|
if (gdbctx->out_buf_alloc < gdbctx->out_len + size)
|
|
{
|
|
gdbctx->out_buf_alloc = ((gdbctx->out_len + size) / 32 + 1) * 32;
|
|
gdbctx->out_buf = realloc(gdbctx->out_buf, gdbctx->out_buf_alloc);
|
|
}
|
|
}
|
|
|
|
static void packet_reply_hex_to(struct gdb_context* gdbctx, const void* src, int len)
|
|
{
|
|
packet_reply_grow(gdbctx, len * 2);
|
|
hex_to(&gdbctx->out_buf[gdbctx->out_len], src, len);
|
|
gdbctx->out_len += len * 2;
|
|
}
|
|
|
|
static inline void packet_reply_hex_to_str(struct gdb_context* gdbctx, const char* src)
|
|
{
|
|
packet_reply_hex_to(gdbctx, src, strlen(src));
|
|
}
|
|
|
|
static void packet_reply_val(struct gdb_context* gdbctx, unsigned long val, int len)
|
|
{
|
|
int i, shift;
|
|
|
|
shift = (len - 1) * 8;
|
|
packet_reply_grow(gdbctx, len * 2);
|
|
for (i = 0; i < len; i++, shift -= 8)
|
|
{
|
|
gdbctx->out_buf[gdbctx->out_len++] = hex_to0((val >> (shift + 4)) & 0x0F);
|
|
gdbctx->out_buf[gdbctx->out_len++] = hex_to0((val >> shift ) & 0x0F);
|
|
}
|
|
}
|
|
|
|
static inline void packet_reply_add(struct gdb_context* gdbctx, const char* str, int len)
|
|
{
|
|
packet_reply_grow(gdbctx, len);
|
|
memcpy(&gdbctx->out_buf[gdbctx->out_len], str, len);
|
|
gdbctx->out_len += len;
|
|
}
|
|
|
|
static inline void packet_reply_cat(struct gdb_context* gdbctx, const char* str)
|
|
{
|
|
packet_reply_add(gdbctx, str, strlen(str));
|
|
}
|
|
|
|
static inline void packet_reply_catc(struct gdb_context* gdbctx, char ch)
|
|
{
|
|
packet_reply_add(gdbctx, &ch, 1);
|
|
}
|
|
|
|
static void packet_reply_open(struct gdb_context* gdbctx)
|
|
{
|
|
assert(gdbctx->out_curr_packet == -1);
|
|
packet_reply_catc(gdbctx, '$');
|
|
gdbctx->out_curr_packet = gdbctx->out_len;
|
|
}
|
|
|
|
static void packet_reply_close(struct gdb_context* gdbctx)
|
|
{
|
|
unsigned char cksum;
|
|
int plen;
|
|
|
|
plen = gdbctx->out_len - gdbctx->out_curr_packet;
|
|
packet_reply_catc(gdbctx, '#');
|
|
cksum = checksum(&gdbctx->out_buf[gdbctx->out_curr_packet], plen);
|
|
packet_reply_hex_to(gdbctx, &cksum, 1);
|
|
if (gdbctx->trace & GDBPXY_TRC_PACKET)
|
|
fprintf(stderr, "Reply : %*.*s\n",
|
|
plen, plen, &gdbctx->out_buf[gdbctx->out_curr_packet]);
|
|
gdbctx->out_curr_packet = -1;
|
|
}
|
|
|
|
static enum packet_return packet_reply(struct gdb_context* gdbctx, const char* packet, int len)
|
|
{
|
|
packet_reply_open(gdbctx);
|
|
|
|
if (len == -1) len = strlen(packet);
|
|
assert(memchr(packet, '$', len) == NULL && memchr(packet, '#', len) == NULL);
|
|
|
|
packet_reply_add(gdbctx, packet, len);
|
|
|
|
packet_reply_close(gdbctx);
|
|
|
|
return packet_done;
|
|
}
|
|
|
|
static enum packet_return packet_reply_error(struct gdb_context* gdbctx, int error)
|
|
{
|
|
packet_reply_open(gdbctx);
|
|
|
|
packet_reply_add(gdbctx, "E", 1);
|
|
packet_reply_val(gdbctx, error, 1);
|
|
|
|
packet_reply_close(gdbctx);
|
|
|
|
return packet_done;
|
|
}
|
|
|
|
/* =============================================== *
|
|
* P A C K E T H A N D L E R S *
|
|
* =============================================== *
|
|
*/
|
|
|
|
static enum packet_return packet_reply_status(struct gdb_context* gdbctx)
|
|
{
|
|
enum packet_return ret = packet_done;
|
|
|
|
packet_reply_open(gdbctx);
|
|
|
|
if (gdbctx->process != NULL)
|
|
{
|
|
unsigned char sig;
|
|
unsigned i;
|
|
|
|
packet_reply_catc(gdbctx, 'T');
|
|
sig = gdbctx->last_sig;
|
|
packet_reply_val(gdbctx, sig, 1);
|
|
packet_reply_add(gdbctx, "thread:", 7);
|
|
packet_reply_val(gdbctx, dbg_curr_thread->tid, 4);
|
|
packet_reply_catc(gdbctx, ';');
|
|
|
|
for (i = 0; i < cpu_num_regs; i++)
|
|
{
|
|
/* FIXME: this call will also grow the buffer...
|
|
* unneeded, but not harmful
|
|
*/
|
|
packet_reply_val(gdbctx, i, 1);
|
|
packet_reply_catc(gdbctx, ':');
|
|
packet_reply_hex_to(gdbctx, cpu_register(&gdbctx->context, i), 4);
|
|
packet_reply_catc(gdbctx, ';');
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Try to put an exit code
|
|
* Cannot use GetExitCodeProcess, wouldn't fit in a 8 bit value, so
|
|
* just indicate the end of process and exit */
|
|
packet_reply_add(gdbctx, "W00", 3);
|
|
/*if (!gdbctx->extended)*/ ret |= packet_last_f;
|
|
}
|
|
|
|
packet_reply_close(gdbctx);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#if 0
|
|
static enum packet_return packet_extended(struct gdb_context* gdbctx)
|
|
{
|
|
gdbctx->extended = 1;
|
|
return packet_ok;
|
|
}
|
|
#endif
|
|
|
|
static enum packet_return packet_last_signal(struct gdb_context* gdbctx)
|
|
{
|
|
assert(gdbctx->in_packet_len == 0);
|
|
return packet_reply_status(gdbctx);
|
|
}
|
|
|
|
static enum packet_return packet_continue(struct gdb_context* gdbctx)
|
|
{
|
|
/* FIXME: add support for address in packet */
|
|
assert(gdbctx->in_packet_len == 0);
|
|
if (dbg_curr_thread != gdbctx->exec_thread && gdbctx->exec_thread)
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND_FIXME)
|
|
fprintf(stderr, "NIY: cont on %lu, while last thread is %lu\n",
|
|
gdbctx->exec_thread->tid, dbg_curr_thread->tid);
|
|
resume_debuggee(gdbctx, DBG_CONTINUE);
|
|
wait_for_debuggee(gdbctx);
|
|
return packet_reply_status(gdbctx);
|
|
}
|
|
|
|
static enum packet_return packet_continue_signal(struct gdb_context* gdbctx)
|
|
{
|
|
unsigned char sig;
|
|
|
|
/* FIXME: add support for address in packet */
|
|
assert(gdbctx->in_packet_len == 2);
|
|
if (dbg_curr_thread != gdbctx->exec_thread && gdbctx->exec_thread)
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND_FIXME)
|
|
fprintf(stderr, "NIY: cont/sig on %lu, while last thread is %lu\n",
|
|
gdbctx->exec_thread->tid, dbg_curr_thread->tid);
|
|
hex_from(&sig, gdbctx->in_packet, 1);
|
|
/* cannot change signals on the fly */
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND)
|
|
fprintf(stderr, "sigs: %u %u\n", sig, gdbctx->last_sig);
|
|
if (sig != gdbctx->last_sig)
|
|
return packet_error;
|
|
resume_debuggee(gdbctx, DBG_EXCEPTION_NOT_HANDLED);
|
|
wait_for_debuggee(gdbctx);
|
|
return packet_reply_status(gdbctx);
|
|
}
|
|
|
|
static enum packet_return packet_detach(struct gdb_context* gdbctx)
|
|
{
|
|
detach_debuggee(gdbctx, FALSE);
|
|
return packet_ok | packet_last_f;
|
|
}
|
|
|
|
static enum packet_return packet_read_registers(struct gdb_context* gdbctx)
|
|
{
|
|
int i;
|
|
CONTEXT ctx;
|
|
CONTEXT* pctx = &gdbctx->context;
|
|
|
|
assert(gdbctx->in_trap);
|
|
|
|
if (dbg_curr_thread != gdbctx->other_thread && gdbctx->other_thread)
|
|
{
|
|
if (!fetch_context(gdbctx, gdbctx->other_thread->handle, pctx = &ctx))
|
|
return packet_error;
|
|
}
|
|
|
|
packet_reply_open(gdbctx);
|
|
for (i = 0; i < cpu_num_regs; i++)
|
|
{
|
|
packet_reply_hex_to(gdbctx, cpu_register(pctx, i), 4);
|
|
}
|
|
packet_reply_close(gdbctx);
|
|
return packet_done;
|
|
}
|
|
|
|
static enum packet_return packet_write_registers(struct gdb_context* gdbctx)
|
|
{
|
|
unsigned i;
|
|
CONTEXT ctx;
|
|
CONTEXT* pctx = &gdbctx->context;
|
|
|
|
assert(gdbctx->in_trap);
|
|
if (dbg_curr_thread != gdbctx->other_thread && gdbctx->other_thread)
|
|
{
|
|
if (!fetch_context(gdbctx, gdbctx->other_thread->handle, pctx = &ctx))
|
|
return packet_error;
|
|
}
|
|
if (gdbctx->in_packet_len < cpu_num_regs * 2) return packet_error;
|
|
|
|
for (i = 0; i < cpu_num_regs; i++)
|
|
hex_from(cpu_register(pctx, i), &gdbctx->in_packet[8 * i], 4);
|
|
if (pctx != &gdbctx->context && !SetThreadContext(gdbctx->other_thread->handle, pctx))
|
|
{
|
|
if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
|
|
fprintf(stderr, "Cannot set context on thread %lu\n", gdbctx->other_thread->tid);
|
|
return packet_error;
|
|
}
|
|
return packet_ok;
|
|
}
|
|
|
|
static enum packet_return packet_kill(struct gdb_context* gdbctx)
|
|
{
|
|
detach_debuggee(gdbctx, TRUE);
|
|
#if 0
|
|
if (!gdbctx->extended)
|
|
/* dunno whether GDB cares or not */
|
|
#endif
|
|
wait(NULL);
|
|
exit(0);
|
|
/* assume we can't really answer something here */
|
|
/* return packet_done; */
|
|
}
|
|
|
|
static enum packet_return packet_thread(struct gdb_context* gdbctx)
|
|
{
|
|
char* end;
|
|
unsigned thread;
|
|
|
|
switch (gdbctx->in_packet[0])
|
|
{
|
|
case 'c':
|
|
case 'g':
|
|
if (gdbctx->in_packet[1] == '-')
|
|
thread = -strtol(gdbctx->in_packet + 2, &end, 16);
|
|
else
|
|
thread = strtol(gdbctx->in_packet + 1, &end, 16);
|
|
if (end == NULL || end > gdbctx->in_packet + gdbctx->in_packet_len)
|
|
{
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
|
|
fprintf(stderr, "Cannot get threadid %*.*s\n",
|
|
gdbctx->in_packet_len - 1, gdbctx->in_packet_len - 1,
|
|
gdbctx->in_packet + 1);
|
|
return packet_error;
|
|
}
|
|
if (gdbctx->in_packet[0] == 'c')
|
|
gdbctx->exec_thread = dbg_get_thread(gdbctx->process, thread);
|
|
else
|
|
gdbctx->other_thread = dbg_get_thread(gdbctx->process, thread);
|
|
return packet_ok;
|
|
default:
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
|
|
fprintf(stderr, "Unknown thread sub-command %c\n", gdbctx->in_packet[0]);
|
|
return packet_error;
|
|
}
|
|
}
|
|
|
|
static enum packet_return packet_read_memory(struct gdb_context* gdbctx)
|
|
{
|
|
char *addr;
|
|
size_t len, blk_len, nread;
|
|
char buffer[32];
|
|
unsigned long r = 0;
|
|
|
|
assert(gdbctx->in_trap);
|
|
/* FIXME:check in_packet_len for reading %p,%x */
|
|
if (sscanf(gdbctx->in_packet, "%p,%x", &addr, &len) != 2) return packet_error;
|
|
if (len <= 0) return packet_error;
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND)
|
|
fprintf(stderr, "Read mem at %p for %u bytes\n", addr, len);
|
|
for (nread = 0; nread < len; nread += r, addr += r)
|
|
{
|
|
blk_len = min(sizeof(buffer), len - nread);
|
|
if (!ReadProcessMemory(gdbctx->process->handle, addr, buffer, blk_len, &r) ||
|
|
r == 0)
|
|
{
|
|
/* fail at first address, return error */
|
|
if (nread == 0) return packet_reply_error(gdbctx, EFAULT);
|
|
/* something has already been read, return partial information */
|
|
break;
|
|
}
|
|
if (nread == 0) packet_reply_open(gdbctx);
|
|
packet_reply_hex_to(gdbctx, buffer, r);
|
|
}
|
|
packet_reply_close(gdbctx);
|
|
return packet_done;
|
|
}
|
|
|
|
static enum packet_return packet_write_memory(struct gdb_context* gdbctx)
|
|
{
|
|
char* addr;
|
|
size_t len, blk_len;
|
|
char* ptr;
|
|
char buffer[32];
|
|
unsigned long w;
|
|
|
|
assert(gdbctx->in_trap);
|
|
ptr = memchr(gdbctx->in_packet, ':', gdbctx->in_packet_len);
|
|
if (ptr == NULL)
|
|
{
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
|
|
fprintf(stderr, "Cannot find ':' in %*.*s\n",
|
|
gdbctx->in_packet_len, gdbctx->in_packet_len, gdbctx->in_packet);
|
|
return packet_error;
|
|
}
|
|
*ptr++ = '\0';
|
|
|
|
if (sscanf(gdbctx->in_packet, "%p,%x", &addr, &len) != 2)
|
|
{
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
|
|
fprintf(stderr, "Cannot scan addr,len in %s\n", gdbctx->in_packet);
|
|
return packet_error;
|
|
}
|
|
if (ptr - gdbctx->in_packet + len * 2 != gdbctx->in_packet_len)
|
|
{
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
|
|
fprintf(stderr, "Wrong sizes %u <> %u\n",
|
|
ptr - gdbctx->in_packet + len * 2, gdbctx->in_packet_len);
|
|
return packet_error;
|
|
}
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND)
|
|
fprintf(stderr, "Write %u bytes at %p\n", len, addr);
|
|
while (len > 0)
|
|
{
|
|
blk_len = min(sizeof(buffer), len);
|
|
hex_from(buffer, ptr, blk_len);
|
|
{
|
|
BOOL ret;
|
|
|
|
ret = WriteProcessMemory(gdbctx->process->handle, addr, buffer, blk_len, &w);
|
|
if (!ret || w != blk_len)
|
|
break;
|
|
}
|
|
addr += w;
|
|
len -= w;
|
|
ptr += w;
|
|
}
|
|
return packet_ok; /* FIXME: error while writing ? */
|
|
}
|
|
|
|
static enum packet_return packet_write_register(struct gdb_context* gdbctx)
|
|
{
|
|
unsigned reg;
|
|
char* ptr;
|
|
char* end;
|
|
CONTEXT ctx;
|
|
CONTEXT* pctx = &gdbctx->context;
|
|
|
|
assert(gdbctx->in_trap);
|
|
|
|
ptr = memchr(gdbctx->in_packet, '=', gdbctx->in_packet_len);
|
|
*ptr++ = '\0';
|
|
reg = strtoul(gdbctx->in_packet, &end, 16);
|
|
if (end == NULL || reg > cpu_num_regs)
|
|
{
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
|
|
fprintf(stderr, "Invalid register index %s\n", gdbctx->in_packet);
|
|
/* FIXME: if just the reg is above cpu_num_regs, don't tell gdb
|
|
* it wouldn't matter too much, and it fakes our support for all regs
|
|
*/
|
|
return (end == NULL) ? packet_error : packet_ok;
|
|
}
|
|
if (ptr + 8 - gdbctx->in_packet != gdbctx->in_packet_len)
|
|
{
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
|
|
fprintf(stderr, "Wrong sizes %u <> %u\n",
|
|
ptr + 8 - gdbctx->in_packet, gdbctx->in_packet_len);
|
|
return packet_error;
|
|
}
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND)
|
|
fprintf(stderr, "Writing reg %u <= %*.*s\n",
|
|
reg, gdbctx->in_packet_len - (ptr - gdbctx->in_packet),
|
|
gdbctx->in_packet_len - (ptr - gdbctx->in_packet), ptr);
|
|
|
|
if (dbg_curr_thread != gdbctx->other_thread && gdbctx->other_thread)
|
|
{
|
|
if (!fetch_context(gdbctx, gdbctx->other_thread->handle, pctx = &ctx))
|
|
return packet_error;
|
|
}
|
|
|
|
hex_from(cpu_register(pctx, reg), ptr, 4);
|
|
if (pctx != &gdbctx->context && !SetThreadContext(gdbctx->other_thread->handle, pctx))
|
|
{
|
|
if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
|
|
fprintf(stderr, "Cannot set context for thread %lu\n", gdbctx->other_thread->tid);
|
|
return packet_error;
|
|
}
|
|
|
|
return packet_ok;
|
|
}
|
|
|
|
static void packet_query_monitor_wnd_helper(struct gdb_context* gdbctx, HWND hWnd, int indent)
|
|
{
|
|
char buffer[128];
|
|
char clsName[128];
|
|
char wndName[128];
|
|
HWND child;
|
|
|
|
do {
|
|
if (!GetClassName(hWnd, clsName, sizeof(clsName)))
|
|
strcpy(clsName, "-- Unknown --");
|
|
if (!GetWindowText(hWnd, wndName, sizeof(wndName)))
|
|
strcpy(wndName, "-- Empty --");
|
|
|
|
packet_reply_open(gdbctx);
|
|
packet_reply_catc(gdbctx, 'O');
|
|
snprintf(buffer, sizeof(buffer),
|
|
"%*s%04x%*s%-17.17s %08lx %08lx %.14s\n",
|
|
indent, "", (UINT)hWnd, 13 - indent, "",
|
|
clsName, GetWindowLong(hWnd, GWL_STYLE),
|
|
GetWindowLong(hWnd, GWL_WNDPROC), wndName);
|
|
packet_reply_hex_to_str(gdbctx, buffer);
|
|
packet_reply_close(gdbctx);
|
|
|
|
if ((child = GetWindow(hWnd, GW_CHILD)) != 0)
|
|
packet_query_monitor_wnd_helper(gdbctx, child, indent + 1);
|
|
} while ((hWnd = GetWindow(hWnd, GW_HWNDNEXT)) != 0);
|
|
}
|
|
|
|
static void packet_query_monitor_wnd(struct gdb_context* gdbctx, int len, const char* str)
|
|
{
|
|
char buffer[128];
|
|
|
|
/* we do the output in several 'O' packets, with the last one being just OK for
|
|
* marking the end of the output */
|
|
packet_reply_open(gdbctx);
|
|
packet_reply_catc(gdbctx, 'O');
|
|
snprintf(buffer, sizeof(buffer),
|
|
"%-16.16s %-17.17s %-8.8s %s\n",
|
|
"hwnd", "Class Name", " Style", " WndProc Text");
|
|
packet_reply_hex_to_str(gdbctx, buffer);
|
|
packet_reply_close(gdbctx);
|
|
|
|
/* FIXME: could also add a pmt to this command in str... */
|
|
packet_query_monitor_wnd_helper(gdbctx, GetDesktopWindow(), 0);
|
|
packet_reply(gdbctx, "OK", 2);
|
|
}
|
|
|
|
static void packet_query_monitor_process(struct gdb_context* gdbctx, int len, const char* str)
|
|
{
|
|
HANDLE snap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
|
|
char buffer[128];
|
|
char deco;
|
|
PROCESSENTRY32 entry;
|
|
BOOL ok;
|
|
|
|
if (snap == INVALID_HANDLE_VALUE)
|
|
return;
|
|
|
|
entry.dwSize = sizeof(entry);
|
|
ok = Process32First(snap, &entry);
|
|
|
|
/* we do the output in several 'O' packets, with the last one being just OK for
|
|
* marking the end of the output */
|
|
|
|
packet_reply_open(gdbctx);
|
|
packet_reply_catc(gdbctx, 'O');
|
|
snprintf(buffer, sizeof(buffer),
|
|
" %-8.8s %-8.8s %-8.8s %s\n",
|
|
"pid", "threads", "parent", "executable");
|
|
packet_reply_hex_to_str(gdbctx, buffer);
|
|
packet_reply_close(gdbctx);
|
|
|
|
while (ok)
|
|
{
|
|
deco = ' ';
|
|
if (entry.th32ProcessID == gdbctx->process->pid) deco = '>';
|
|
packet_reply_open(gdbctx);
|
|
packet_reply_catc(gdbctx, 'O');
|
|
snprintf(buffer, sizeof(buffer),
|
|
"%c%08lx %-8ld %08lx '%s'\n",
|
|
deco, entry.th32ProcessID, entry.cntThreads,
|
|
entry.th32ParentProcessID, entry.szExeFile);
|
|
packet_reply_hex_to_str(gdbctx, buffer);
|
|
packet_reply_close(gdbctx);
|
|
ok = Process32Next(snap, &entry);
|
|
}
|
|
CloseHandle(snap);
|
|
packet_reply(gdbctx, "OK", 2);
|
|
}
|
|
|
|
static void packet_query_monitor_mem(struct gdb_context* gdbctx, int len, const char* str)
|
|
{
|
|
MEMORY_BASIC_INFORMATION mbi;
|
|
char* addr = 0;
|
|
const char* state;
|
|
const char* type;
|
|
char prot[3+1];
|
|
char buffer[128];
|
|
|
|
/* we do the output in several 'O' packets, with the last one being just OK for
|
|
* marking the end of the output */
|
|
packet_reply_open(gdbctx);
|
|
packet_reply_catc(gdbctx, 'O');
|
|
packet_reply_hex_to_str(gdbctx, "Address Size State Type RWX\n");
|
|
packet_reply_close(gdbctx);
|
|
|
|
while (VirtualQueryEx(gdbctx->process->handle, addr, &mbi, sizeof(mbi)) >= sizeof(mbi))
|
|
{
|
|
switch (mbi.State)
|
|
{
|
|
case MEM_COMMIT: state = "commit "; break;
|
|
case MEM_FREE: state = "free "; break;
|
|
case MEM_RESERVE: state = "reserve"; break;
|
|
default: state = "??? "; break;
|
|
}
|
|
if (mbi.State != MEM_FREE)
|
|
{
|
|
switch (mbi.Type)
|
|
{
|
|
case MEM_IMAGE: type = "image "; break;
|
|
case MEM_MAPPED: type = "mapped "; break;
|
|
case MEM_PRIVATE: type = "private"; break;
|
|
case 0: type = " "; break;
|
|
default: type = "??? "; break;
|
|
}
|
|
memset(prot, ' ' , sizeof(prot)-1);
|
|
prot[sizeof(prot)-1] = '\0';
|
|
if (mbi.AllocationProtect & (PAGE_READONLY|PAGE_READWRITE|PAGE_EXECUTE_READ|PAGE_EXECUTE_READWRITE))
|
|
prot[0] = 'R';
|
|
if (mbi.AllocationProtect & (PAGE_READWRITE|PAGE_EXECUTE_READWRITE))
|
|
prot[1] = 'W';
|
|
if (mbi.AllocationProtect & (PAGE_WRITECOPY|PAGE_EXECUTE_WRITECOPY))
|
|
prot[1] = 'C';
|
|
if (mbi.AllocationProtect & (PAGE_EXECUTE|PAGE_EXECUTE_READ|PAGE_EXECUTE_READWRITE))
|
|
prot[2] = 'X';
|
|
}
|
|
else
|
|
{
|
|
type = "";
|
|
prot[0] = '\0';
|
|
}
|
|
packet_reply_open(gdbctx);
|
|
snprintf(buffer, sizeof(buffer),
|
|
"%08lx %08lx %s %s %s\n",
|
|
(DWORD)addr, mbi.RegionSize, state, type, prot);
|
|
packet_reply_catc(gdbctx, 'O');
|
|
packet_reply_hex_to_str(gdbctx, buffer);
|
|
packet_reply_close(gdbctx);
|
|
|
|
if (addr + mbi.RegionSize < addr) /* wrap around ? */
|
|
break;
|
|
addr += mbi.RegionSize;
|
|
}
|
|
packet_reply(gdbctx, "OK", 2);
|
|
}
|
|
|
|
static void packet_query_monitor_trace(struct gdb_context* gdbctx,
|
|
int len, const char* str)
|
|
{
|
|
char buffer[128];
|
|
|
|
if (len == 0)
|
|
{
|
|
snprintf(buffer, sizeof(buffer), "trace=%x\n", gdbctx->trace);
|
|
}
|
|
else if (len >= 2 && str[0] == '=')
|
|
{
|
|
unsigned val = atoi(&str[1]);
|
|
snprintf(buffer, sizeof(buffer), "trace: %x => %x\n", gdbctx->trace, val);
|
|
gdbctx->trace = val;
|
|
}
|
|
else
|
|
{
|
|
/* FIXME: ugly but can use error packet here */
|
|
packet_reply_cat(gdbctx, "E00");
|
|
return;
|
|
}
|
|
packet_reply_open(gdbctx);
|
|
packet_reply_hex_to_str(gdbctx, buffer);
|
|
packet_reply_close(gdbctx);
|
|
}
|
|
|
|
struct query_detail
|
|
{
|
|
int with_arg;
|
|
const char* name;
|
|
size_t len;
|
|
void (*handler)(struct gdb_context*, int, const char*);
|
|
} query_details[] =
|
|
{
|
|
{0, "wnd", 3, packet_query_monitor_wnd},
|
|
{0, "window", 6, packet_query_monitor_wnd},
|
|
{0, "proc", 4, packet_query_monitor_process},
|
|
{0, "process", 7, packet_query_monitor_process},
|
|
{0, "mem", 3, packet_query_monitor_mem},
|
|
{1, "trace", 5, packet_query_monitor_trace},
|
|
{0, NULL, 0, NULL},
|
|
};
|
|
|
|
static enum packet_return packet_query_remote_command(struct gdb_context* gdbctx,
|
|
const char* hxcmd, size_t len)
|
|
{
|
|
char buffer[128];
|
|
struct query_detail* qd;
|
|
|
|
assert((len & 1) == 0 && len < 2 * sizeof(buffer));
|
|
len /= 2;
|
|
hex_from(buffer, hxcmd, len);
|
|
|
|
for (qd = &query_details[0]; qd->name != NULL; qd++)
|
|
{
|
|
if (len < qd->len || strncmp(buffer, qd->name, qd->len) != 0) continue;
|
|
if (!qd->with_arg && len != qd->len) continue;
|
|
|
|
(qd->handler)(gdbctx, len - qd->len, buffer + qd->len);
|
|
return packet_done;
|
|
}
|
|
return packet_reply_error(gdbctx, EINVAL);
|
|
}
|
|
|
|
static enum packet_return packet_query(struct gdb_context* gdbctx)
|
|
{
|
|
switch (gdbctx->in_packet[0])
|
|
{
|
|
case 'f':
|
|
if (strncmp(gdbctx->in_packet + 1, "ThreadInfo", gdbctx->in_packet_len - 1) == 0)
|
|
{
|
|
struct dbg_thread* thd;
|
|
|
|
packet_reply_open(gdbctx);
|
|
packet_reply_add(gdbctx, "m", 1);
|
|
for (thd = gdbctx->process->threads; thd; thd = thd->next)
|
|
{
|
|
packet_reply_val(gdbctx, thd->tid, 4);
|
|
if (thd->next != NULL)
|
|
packet_reply_add(gdbctx, ",", 1);
|
|
}
|
|
packet_reply_close(gdbctx);
|
|
return packet_done;
|
|
}
|
|
else if (strncmp(gdbctx->in_packet + 1, "ProcessInfo", gdbctx->in_packet_len - 1) == 0)
|
|
{
|
|
char result[128];
|
|
|
|
packet_reply_open(gdbctx);
|
|
packet_reply_catc(gdbctx, 'O');
|
|
get_process_info(gdbctx, result, sizeof(result));
|
|
packet_reply_hex_to_str(gdbctx, result);
|
|
packet_reply_close(gdbctx);
|
|
return packet_done;
|
|
}
|
|
break;
|
|
case 's':
|
|
if (strncmp(gdbctx->in_packet + 1, "ThreadInfo", gdbctx->in_packet_len - 1) == 0)
|
|
{
|
|
packet_reply(gdbctx, "l", 1);
|
|
return packet_done;
|
|
}
|
|
else if (strncmp(gdbctx->in_packet + 1, "ProcessInfo", gdbctx->in_packet_len - 1) == 0)
|
|
{
|
|
packet_reply(gdbctx, "l", 1);
|
|
return packet_done;
|
|
}
|
|
break;
|
|
case 'C':
|
|
if (gdbctx->in_packet_len == 1)
|
|
{
|
|
struct dbg_thread* thd;
|
|
/* FIXME: doc says 16 bit val ??? */
|
|
/* grab first created thread, aka last in list */
|
|
assert(gdbctx->process && gdbctx->process->threads);
|
|
for (thd = gdbctx->process->threads; thd->next; thd = thd->next);
|
|
packet_reply_open(gdbctx);
|
|
packet_reply_add(gdbctx, "QC", 2);
|
|
packet_reply_val(gdbctx, thd->tid, 4);
|
|
packet_reply_close(gdbctx);
|
|
return packet_done;
|
|
}
|
|
break;
|
|
case 'O':
|
|
if (strncmp(gdbctx->in_packet, "Offsets", gdbctx->in_packet_len) == 0)
|
|
{
|
|
char buf[64];
|
|
|
|
if (gdbctx->wine_segs[0] == 0 && gdbctx->wine_segs[1] == 0 &&
|
|
gdbctx->wine_segs[2] == 0)
|
|
return packet_error;
|
|
snprintf(buf, sizeof(buf),
|
|
"Text=%08lx;Data=%08lx;Bss=%08lx",
|
|
gdbctx->wine_segs[0], gdbctx->wine_segs[1],
|
|
gdbctx->wine_segs[2]);
|
|
return packet_reply(gdbctx, buf, -1);
|
|
}
|
|
break;
|
|
case 'R':
|
|
if (gdbctx->in_packet_len > 5 && strncmp(gdbctx->in_packet, "Rcmd,", 5) == 0)
|
|
{
|
|
return packet_query_remote_command(gdbctx, gdbctx->in_packet + 5,
|
|
gdbctx->in_packet_len - 5);
|
|
}
|
|
break;
|
|
case 'S':
|
|
if (strncmp(gdbctx->in_packet, "Symbol::", gdbctx->in_packet_len) == 0)
|
|
return packet_ok;
|
|
break;
|
|
case 'T':
|
|
if (gdbctx->in_packet_len > 15 &&
|
|
strncmp(gdbctx->in_packet, "ThreadExtraInfo", 15) == 0 &&
|
|
gdbctx->in_packet[15] == ',')
|
|
{
|
|
unsigned tid;
|
|
char* end;
|
|
char result[128];
|
|
|
|
tid = strtol(gdbctx->in_packet + 16, &end, 16);
|
|
if (end == NULL) break;
|
|
get_thread_info(gdbctx, tid, result, sizeof(result));
|
|
packet_reply_open(gdbctx);
|
|
packet_reply_hex_to_str(gdbctx, result);
|
|
packet_reply_close(gdbctx);
|
|
return packet_done;
|
|
}
|
|
break;
|
|
}
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
|
|
fprintf(stderr, "Unknown or malformed query %*.*s\n",
|
|
gdbctx->in_packet_len, gdbctx->in_packet_len, gdbctx->in_packet);
|
|
return packet_error;
|
|
}
|
|
|
|
static enum packet_return packet_step(struct gdb_context* gdbctx)
|
|
{
|
|
/* FIXME: add support for address in packet */
|
|
assert(gdbctx->in_packet_len == 0);
|
|
if (dbg_curr_thread != gdbctx->exec_thread && gdbctx->exec_thread)
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND_FIXME)
|
|
fprintf(stderr, "NIY: step on %lu, while last thread is %lu\n",
|
|
gdbctx->exec_thread->tid, dbg_curr_thread->tid);
|
|
be_cpu->single_step(&gdbctx->context, TRUE);
|
|
resume_debuggee(gdbctx, DBG_CONTINUE);
|
|
wait_for_debuggee(gdbctx);
|
|
be_cpu->single_step(&gdbctx->context, FALSE);
|
|
return packet_reply_status(gdbctx);
|
|
}
|
|
|
|
#if 0
|
|
static enum packet_return packet_step_signal(struct gdb_context* gdbctx)
|
|
{
|
|
unsigned char sig;
|
|
|
|
/* FIXME: add support for address in packet */
|
|
assert(gdbctx->in_packet_len == 2);
|
|
if (dbg_curr_thread->tid != gdbctx->exec_thread && gdbctx->exec_thread)
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
|
|
fprintf(stderr, "NIY: step/sig on %u, while last thread is %u\n",
|
|
gdbctx->exec_thread, DEBUG_CurrThread->tid);
|
|
hex_from(&sig, gdbctx->in_packet, 1);
|
|
/* cannot change signals on the fly */
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND)
|
|
fprintf(stderr, "sigs: %u %u\n", sig, gdbctx->last_sig);
|
|
if (sig != gdbctx->last_sig)
|
|
return packet_error;
|
|
resume_debuggee(gdbctx, DBG_EXCEPTION_NOT_HANDLED);
|
|
wait_for_debuggee(gdbctx);
|
|
return packet_reply_status(gdbctx);
|
|
}
|
|
#endif
|
|
|
|
static enum packet_return packet_thread_alive(struct gdb_context* gdbctx)
|
|
{
|
|
char* end;
|
|
unsigned tid;
|
|
|
|
tid = strtol(gdbctx->in_packet, &end, 16);
|
|
if (tid == -1 || tid == 0)
|
|
return packet_reply_error(gdbctx, EINVAL);
|
|
if (dbg_get_thread(gdbctx->process, tid) != NULL)
|
|
return packet_ok;
|
|
return packet_reply_error(gdbctx, ESRCH);
|
|
}
|
|
|
|
static enum packet_return packet_remove_breakpoint(struct gdb_context* gdbctx)
|
|
{
|
|
void* addr;
|
|
unsigned len;
|
|
struct gdb_ctx_Xpoint* xpt;
|
|
enum be_xpoint_type t;
|
|
|
|
/* FIXME: check packet_len */
|
|
if (gdbctx->in_packet[0] < '0' || gdbctx->in_packet[0] > '4' ||
|
|
gdbctx->in_packet[1] != ',' ||
|
|
sscanf(gdbctx->in_packet + 2, "%p,%x", &addr, &len) != 2)
|
|
return packet_error;
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND)
|
|
fprintf(stderr, "Remove bp %p[%u] typ=%c\n",
|
|
addr, len, gdbctx->in_packet[0]);
|
|
switch (gdbctx->in_packet[0])
|
|
{
|
|
case '0': t = be_xpoint_break; len = 0; break;
|
|
case '1': t = be_xpoint_watch_exec; break;
|
|
case '2': t = be_xpoint_watch_read; break;
|
|
case '3': t = be_xpoint_watch_write; break;
|
|
default: return packet_error;
|
|
}
|
|
for (xpt = &gdbctx->Xpoints[NUM_XPOINT - 1]; xpt >= gdbctx->Xpoints; xpt--)
|
|
{
|
|
if (xpt->addr == addr && xpt->type == t)
|
|
{
|
|
if (be_cpu->remove_Xpoint(gdbctx->process->handle, &gdbctx->context,
|
|
t, xpt->addr, xpt->val, len))
|
|
{
|
|
xpt->type = -1;
|
|
return packet_ok;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
return packet_error;
|
|
}
|
|
|
|
static enum packet_return packet_set_breakpoint(struct gdb_context* gdbctx)
|
|
{
|
|
void* addr;
|
|
unsigned len;
|
|
struct gdb_ctx_Xpoint* xpt;
|
|
enum be_xpoint_type t;
|
|
|
|
/* FIXME: check packet_len */
|
|
if (gdbctx->in_packet[0] < '0' || gdbctx->in_packet[0] > '4' ||
|
|
gdbctx->in_packet[1] != ',' ||
|
|
sscanf(gdbctx->in_packet + 2, "%p,%x", &addr, &len) != 2)
|
|
return packet_error;
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND)
|
|
fprintf(stderr, "Set bp %p[%u] typ=%c\n",
|
|
addr, len, gdbctx->in_packet[0]);
|
|
switch (gdbctx->in_packet[0])
|
|
{
|
|
case '0': t = be_xpoint_break; len = 0; break;
|
|
case '1': t = be_xpoint_watch_exec; break;
|
|
case '2': t = be_xpoint_watch_read; break;
|
|
case '3': t = be_xpoint_watch_write; break;
|
|
default: return packet_error;
|
|
}
|
|
/* because of packet command handling, this should be made idempotent */
|
|
for (xpt = &gdbctx->Xpoints[NUM_XPOINT - 1]; xpt >= gdbctx->Xpoints; xpt--)
|
|
{
|
|
if (xpt->addr == addr && xpt->type == t)
|
|
return packet_ok; /* nothing to do */
|
|
}
|
|
/* really set the Xpoint */
|
|
for (xpt = &gdbctx->Xpoints[NUM_XPOINT - 1]; xpt >= gdbctx->Xpoints; xpt--)
|
|
{
|
|
if (xpt->type == -1)
|
|
{
|
|
if (be_cpu->insert_Xpoint(gdbctx->process->handle, &gdbctx->context,
|
|
t, addr, &xpt->val, len))
|
|
{
|
|
xpt->addr = addr;
|
|
xpt->type = t;
|
|
return packet_ok;
|
|
}
|
|
fprintf(stderr, "cannot set xpoint\n");
|
|
break;
|
|
}
|
|
}
|
|
/* no more entries... eech */
|
|
fprintf(stderr, "Running out of spots for {break|watch}points\n");
|
|
return packet_error;
|
|
}
|
|
|
|
/* =============================================== *
|
|
* P A C K E T I N F R A S T R U C T U R E *
|
|
* =============================================== *
|
|
*/
|
|
|
|
struct packet_entry
|
|
{
|
|
char key;
|
|
enum packet_return (*handler)(struct gdb_context* gdbctx);
|
|
};
|
|
|
|
static struct packet_entry packet_entries[] =
|
|
{
|
|
/* {'!', packet_extended}, */
|
|
{'?', packet_last_signal},
|
|
{'c', packet_continue},
|
|
{'C', packet_continue_signal},
|
|
{'D', packet_detach},
|
|
{'g', packet_read_registers},
|
|
{'G', packet_write_registers},
|
|
{'k', packet_kill},
|
|
{'H', packet_thread},
|
|
{'m', packet_read_memory},
|
|
{'M', packet_write_memory},
|
|
/* {'p', packet_read_register}, doesn't seem needed */
|
|
{'P', packet_write_register},
|
|
{'q', packet_query},
|
|
{'s', packet_step},
|
|
/*{'S', packet_step_signal}, hard(er) to implement */
|
|
{'T', packet_thread_alive},
|
|
{'z', packet_remove_breakpoint},
|
|
{'Z', packet_set_breakpoint},
|
|
};
|
|
|
|
static BOOL extract_packets(struct gdb_context* gdbctx)
|
|
{
|
|
char* end;
|
|
int plen;
|
|
unsigned char in_cksum, loc_cksum;
|
|
char* ptr;
|
|
enum packet_return ret = packet_error;
|
|
int num_packet = 0;
|
|
|
|
while ((ret & packet_last_f) == 0)
|
|
{
|
|
if (gdbctx->in_len && (gdbctx->trace & GDBPXY_TRC_LOWLEVEL))
|
|
fprintf(stderr, "In-buf: %*.*s\n",
|
|
gdbctx->in_len, gdbctx->in_len, gdbctx->in_buf);
|
|
ptr = memchr(gdbctx->in_buf, '$', gdbctx->in_len);
|
|
if (ptr == NULL) return FALSE;
|
|
if (ptr != gdbctx->in_buf)
|
|
{
|
|
int glen = ptr - gdbctx->in_buf; /* garbage len */
|
|
if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
|
|
fprintf(stderr, "Removing garbage: %*.*s\n",
|
|
glen, glen, gdbctx->in_buf);
|
|
gdbctx->in_len -= glen;
|
|
memmove(gdbctx->in_buf, ptr, gdbctx->in_len);
|
|
}
|
|
end = memchr(gdbctx->in_buf + 1, '#', gdbctx->in_len);
|
|
if (end == NULL) return FALSE;
|
|
/* no checksum yet */
|
|
if (end + 3 > gdbctx->in_buf + gdbctx->in_len) return FALSE;
|
|
plen = end - gdbctx->in_buf - 1;
|
|
hex_from(&in_cksum, end + 1, 1);
|
|
loc_cksum = checksum(gdbctx->in_buf + 1, plen);
|
|
if (loc_cksum == in_cksum)
|
|
{
|
|
if (num_packet == 0) {
|
|
int i;
|
|
|
|
ret = packet_error;
|
|
|
|
write(gdbctx->sock, "+", 1);
|
|
assert(plen);
|
|
|
|
/* FIXME: should use bsearch if packet_entries was sorted */
|
|
for (i = 0; i < sizeof(packet_entries)/sizeof(packet_entries[0]); i++)
|
|
{
|
|
if (packet_entries[i].key == gdbctx->in_buf[1]) break;
|
|
}
|
|
if (i == sizeof(packet_entries)/sizeof(packet_entries[0]))
|
|
{
|
|
if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
|
|
fprintf(stderr, "Unknown packet request %*.*s\n",
|
|
plen, plen, &gdbctx->in_buf[1]);
|
|
}
|
|
else
|
|
{
|
|
gdbctx->in_packet = gdbctx->in_buf + 2;
|
|
gdbctx->in_packet_len = plen - 1;
|
|
if (gdbctx->trace & GDBPXY_TRC_PACKET)
|
|
fprintf(stderr, "Packet: %c%*.*s\n",
|
|
gdbctx->in_buf[1],
|
|
gdbctx->in_packet_len, gdbctx->in_packet_len,
|
|
gdbctx->in_packet);
|
|
ret = (packet_entries[i].handler)(gdbctx);
|
|
}
|
|
switch (ret & ~packet_last_f)
|
|
{
|
|
case packet_error: packet_reply(gdbctx, "", 0); break;
|
|
case packet_ok: packet_reply(gdbctx, "OK", 2); break;
|
|
case packet_done: break;
|
|
}
|
|
if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
|
|
fprintf(stderr, "Reply-full: %*.*s\n",
|
|
gdbctx->out_len, gdbctx->out_len, gdbctx->out_buf);
|
|
i = write(gdbctx->sock, gdbctx->out_buf, gdbctx->out_len);
|
|
assert(i == gdbctx->out_len);
|
|
/* if this fails, we'll have to use POLLOUT...
|
|
*/
|
|
gdbctx->out_len = 0;
|
|
num_packet++;
|
|
}
|
|
else
|
|
{
|
|
/* FIXME: if we have in our input buffer more than one packet,
|
|
* it's very likely that we took too long to answer to a given packet
|
|
* and gdb is sending us again the same packet
|
|
* We simply drop the second packet. This will lower the risk of error,
|
|
* but there's still some race conditions here
|
|
* A better fix (yet not perfect) would be to have two threads:
|
|
* - one managing the packets for gdb
|
|
* - the second one managing the commands...
|
|
* This would allow us also the reply with the '+' character (Ack of
|
|
* the command) way sooner than what we do now
|
|
*/
|
|
if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
|
|
fprintf(stderr, "Dropping packet, I was too slow to respond\n");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
write(gdbctx->sock, "+", 1);
|
|
if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
|
|
fprintf(stderr, "Dropping packet, invalid checksum %d <> %d\n", in_cksum, loc_cksum);
|
|
}
|
|
gdbctx->in_len -= plen + 4;
|
|
memmove(gdbctx->in_buf, end + 3, gdbctx->in_len);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static int fetch_data(struct gdb_context* gdbctx)
|
|
{
|
|
int len, in_len = gdbctx->in_len;
|
|
|
|
assert(gdbctx->in_len <= gdbctx->in_buf_alloc);
|
|
for (;;)
|
|
{
|
|
#define STEP 128
|
|
if (gdbctx->in_len + STEP > gdbctx->in_buf_alloc)
|
|
gdbctx->in_buf = realloc(gdbctx->in_buf, gdbctx->in_buf_alloc += STEP);
|
|
#undef STEP
|
|
if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
|
|
fprintf(stderr, "%d %d %*.*s\n",
|
|
gdbctx->in_len, gdbctx->in_buf_alloc,
|
|
gdbctx->in_len, gdbctx->in_len, gdbctx->in_buf);
|
|
len = read(gdbctx->sock, gdbctx->in_buf + gdbctx->in_len, gdbctx->in_buf_alloc - gdbctx->in_len);
|
|
if (len <= 0) break;
|
|
gdbctx->in_len += len;
|
|
assert(gdbctx->in_len <= gdbctx->in_buf_alloc);
|
|
if (len < gdbctx->in_buf_alloc - gdbctx->in_len) break;
|
|
}
|
|
if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
|
|
fprintf(stderr, "=> %d\n", gdbctx->in_len - in_len);
|
|
return gdbctx->in_len - in_len;
|
|
}
|
|
|
|
static BOOL gdb_exec(const char* wine_path, unsigned port, unsigned flags)
|
|
{
|
|
char buf[MAX_PATH];
|
|
int fd;
|
|
const char* gdb_path;
|
|
FILE* f;
|
|
|
|
if (!(gdb_path = getenv("WINE_GDB"))) gdb_path = "gdb";
|
|
strcpy(buf,"/tmp/winegdb.XXXXXX");
|
|
fd = mkstemps(buf, 0);
|
|
if (fd == -1) return FALSE;
|
|
if ((f = fdopen(fd, "w+")) == NULL) return FALSE;
|
|
fprintf(f, "file %s\n", wine_path);
|
|
fprintf(f, "target remote localhost:%d\n", ntohs(port));
|
|
fprintf(f, "monitor trace=%d\n", GDBPXY_TRC_COMMAND_FIXME);
|
|
fprintf(f, "set prompt Wine-gdb>\\ \n");
|
|
/* gdb 5.1 seems to require it, won't hurt anyway */
|
|
fprintf(f, "sharedlibrary\n");
|
|
/* This is needed (but not a decent & final fix)
|
|
* Without this, gdb would skip our inter-DLL relay code (because
|
|
* we don't have any line number information for the relay code)
|
|
* With this, we will stop on first instruction of the stub, and
|
|
* reusing step, will get us through the relay stub at the actual
|
|
* function we're looking at.
|
|
*/
|
|
fprintf(f, "set step-mode on\n");
|
|
/* tell gdb to delete this file when done handling it... */
|
|
fprintf(f, "shell rm -f \"%s\"\n", buf);
|
|
fclose(f);
|
|
if (flags & 2)
|
|
execlp("xterm", "xterm", "-e", gdb_path, "-x", buf, NULL);
|
|
else
|
|
execlp(gdb_path, gdb_path, "-x", buf, NULL);
|
|
assert(0); /* never reached */
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL gdb_startup(struct gdb_context* gdbctx, DEBUG_EVENT* de, unsigned flags)
|
|
{
|
|
int sock;
|
|
struct sockaddr_in s_addrs;
|
|
int s_len = sizeof(s_addrs);
|
|
struct pollfd pollfd;
|
|
IMAGEHLP_MODULE imh_mod;
|
|
|
|
/* step 1: create socket for gdb connection request */
|
|
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
|
|
{
|
|
if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
|
|
fprintf(stderr, "Can't create socket");
|
|
return FALSE;
|
|
}
|
|
|
|
if (listen(sock, 1) == -1 ||
|
|
getsockname(sock, (struct sockaddr*)&s_addrs, &s_len) == -1)
|
|
return FALSE;
|
|
|
|
/* step 2: do the process internal creation */
|
|
handle_debug_event(gdbctx, de);
|
|
|
|
/* step3: get the wine loader name */
|
|
if (!dbg_get_debuggee_info(gdbctx->process->handle, &imh_mod)) return FALSE;
|
|
|
|
/* step 4: fire up gdb (if requested) */
|
|
if (flags & 1)
|
|
fprintf(stderr, "target remote localhost:%d\n", ntohs(s_addrs.sin_port));
|
|
else
|
|
switch (fork())
|
|
{
|
|
case -1: /* error in parent... */
|
|
fprintf(stderr, "Cannot create gdb\n");
|
|
return FALSE;
|
|
break;
|
|
default: /* in parent... success */
|
|
break;
|
|
case 0: /* in child... and alive */
|
|
gdb_exec(imh_mod.LoadedImageName, s_addrs.sin_port, flags);
|
|
/* if we're here, exec failed, so report failure */
|
|
return FALSE;
|
|
}
|
|
|
|
/* step 5: wait for gdb to connect actually */
|
|
pollfd.fd = sock;
|
|
pollfd.events = POLLIN;
|
|
pollfd.revents = 0;
|
|
|
|
switch (poll(&pollfd, 1, -1))
|
|
{
|
|
case 1:
|
|
if (pollfd.revents & POLLIN)
|
|
{
|
|
int dummy = 1;
|
|
gdbctx->sock = accept(sock, (struct sockaddr*)&s_addrs, &s_len);
|
|
if (gdbctx->sock == -1)
|
|
break;
|
|
if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
|
|
fprintf(stderr, "Connected on %d\n", gdbctx->sock);
|
|
/* don't keep our small packets too long: send them ASAP back to GDB
|
|
* without this, GDB really crawls
|
|
*/
|
|
setsockopt(gdbctx->sock, IPPROTO_TCP, TCP_NODELAY, (char*)&dummy, sizeof(dummy));
|
|
}
|
|
break;
|
|
case 0:
|
|
if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
|
|
fprintf(stderr, "Poll for cnx failed (timeout)\n");
|
|
return FALSE;
|
|
case -1:
|
|
if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
|
|
fprintf(stderr, "Poll for cnx failed (error)\n");
|
|
return FALSE;
|
|
default:
|
|
assert(0);
|
|
}
|
|
|
|
close(sock);
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL gdb_init_context(struct gdb_context* gdbctx, unsigned flags)
|
|
{
|
|
DEBUG_EVENT de;
|
|
int i;
|
|
|
|
gdbctx->sock = -1;
|
|
gdbctx->in_buf = NULL;
|
|
gdbctx->in_buf_alloc = 0;
|
|
gdbctx->in_len = 0;
|
|
gdbctx->out_buf = NULL;
|
|
gdbctx->out_buf_alloc = 0;
|
|
gdbctx->out_len = 0;
|
|
gdbctx->out_curr_packet = -1;
|
|
|
|
gdbctx->exec_thread = gdbctx->other_thread = NULL;
|
|
gdbctx->last_sig = 0;
|
|
gdbctx->in_trap = FALSE;
|
|
gdbctx->trace = /*GDBPXY_TRC_PACKET | GDBPXY_TRC_COMMAND |*/ GDBPXY_TRC_COMMAND_ERROR | GDBPXY_TRC_COMMAND_FIXME | GDBPXY_TRC_WIN32_EVENT;
|
|
gdbctx->process = NULL;
|
|
for (i = 0; i < NUM_XPOINT; i++)
|
|
gdbctx->Xpoints[i].type = -1;
|
|
|
|
/* wait for first trap */
|
|
while (WaitForDebugEvent(&de, INFINITE))
|
|
{
|
|
if (de.dwDebugEventCode == CREATE_PROCESS_DEBUG_EVENT)
|
|
{
|
|
/* this should be the first event we get,
|
|
* and the only one of this type */
|
|
assert(gdbctx->process == NULL && de.dwProcessId == dbg_curr_pid);
|
|
/* gdbctx->dwProcessId = pid; */
|
|
if (!gdb_startup(gdbctx, &de, flags)) return FALSE;
|
|
assert(!gdbctx->in_trap);
|
|
}
|
|
else
|
|
{
|
|
handle_debug_event(gdbctx, &de);
|
|
if (gdbctx->in_trap) break;
|
|
}
|
|
ContinueDebugEvent(de.dwProcessId, de.dwThreadId, DBG_CONTINUE);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
BOOL gdb_remote(unsigned flags)
|
|
{
|
|
struct pollfd pollfd;
|
|
struct gdb_context gdbctx;
|
|
BOOL doLoop;
|
|
|
|
for (doLoop = gdb_init_context(&gdbctx, flags); doLoop;)
|
|
{
|
|
pollfd.fd = gdbctx.sock;
|
|
pollfd.events = POLLIN;
|
|
pollfd.revents = 0;
|
|
|
|
switch (poll(&pollfd, 1, -1))
|
|
{
|
|
case 1:
|
|
/* got something */
|
|
if (pollfd.revents & (POLLHUP | POLLERR))
|
|
{
|
|
if (gdbctx.trace & GDBPXY_TRC_LOWLEVEL)
|
|
fprintf(stderr, "Gdb hung up\n");
|
|
/* kill also debuggee process - questionnable - */
|
|
detach_debuggee(&gdbctx, TRUE);
|
|
doLoop = FALSE;
|
|
break;
|
|
}
|
|
if ((pollfd.revents & POLLIN) && fetch_data(&gdbctx) > 0)
|
|
{
|
|
if (extract_packets(&gdbctx)) doLoop = FALSE;
|
|
}
|
|
break;
|
|
case 0:
|
|
/* timeout, should never happen (infinite timeout) */
|
|
break;
|
|
case -1:
|
|
if (gdbctx.trace & GDBPXY_TRC_LOWLEVEL)
|
|
fprintf(stderr, "Poll failed\n");
|
|
doLoop = FALSE;
|
|
break;
|
|
}
|
|
}
|
|
wait(NULL);
|
|
return 0;
|
|
}
|