riscv-gnu-toolchain/gdb.git - Unnamed repository; edit this file 'description' to name the repository.

Age	Commit message (Expand)	Author	Files	Lines
2008-12-04	opcodes/	Ben Elliston	1	-2/+2
2008-08-02	gas/	Peter Bergner	1	-1/+15
2008-07-30	include/opcode/	Alan Modra	1	-2/+8
2008-06-25	gas/	Peter Bergner	1	-1/+3
2008-06-13	include/opcode/	Peter Bergner	1	-15/+29
2008-04-14	ppc e500mc support	Alan Modra	1	-1/+8
2007-08-24	binutils/	Ben Elliston	1	-0/+4
2007-07-05	Change source files over to GPLv3.	Nick Clifton	1	-15/+16
2007-05-18	* ppc-dis.c (print_insn_powerpc): Don't skip all operands	Alan Modra	1	-6/+8
2007-05-17	* ppc-dis.c (operand_value_powerpc, skip_optional_operands): New.	Peter Bergner	1	-23/+60
2007-04-20	include/opcode/	Alan Modra	1	-5/+13
2007-02-02	* ppc-dis.c (powerpc_dialect): Handle ppc440.	Nick Clifton	1	-1/+6
2006-10-24	Add powerpc cell support.	Alan Modra	1	-0/+4
2006-06-07	include/opcode/	Alan Modra	1	-1/+6
2005-10-06	bfd/	Daniel Jacobowitz	1	-8/+3
2005-08-15	gas/	Daniel Jacobowitz	1	-0/+4
2005-07-07	Kaveh Ghazi's printf format attribute checking patch.	Jim Wilson	1	-1/+1
2005-05-19	* ppc-dis.c (powerpc_dialect): Handle "-Mpower5".	Alan Modra	1	-0/+5
2005-05-07	Update the address and phone number of the FSF	Nick Clifton	1	-1/+1
2005-03-16	* ppc-dis.c (powerpc_dialect): Don't set PPC_OPCODE_ALTIVEC when	Alan Modra	1	-17/+9
2004-03-16	opcodes/	Alan Modra	1	-4/+6
2003-09-04	* ppc-dis.c (struct dis_private): New.	Alan Modra	1	-32/+46
2003-09-02	* ppc-opc.c (powerpc_opcodes): Combine identical PPC403/BOOKE entries.	Alan Modra	1	-21/+10
2003-07-07	* ppc-opc.c: Remove NULL pointer checks. Formatting. Remove	Alan Modra	1	-2/+3
2002-11-12	* ppc-dis.c (print_insn_powerpc): Correct condition register display.	Alan Modra	1	-13/+8
2002-09-12	* ppc-dis.c (powerpc_dialect): Add missing PPC_OPCODE_CLASSIC.	Alan Modra	1	-1/+2
2002-09-04	Have objdump's --help switch document PPC -M options.	Nick Clifton	1	-0/+15
2002-08-19	2002-08-19 Elena Zannoni <ezannoni@redhat.com>	Elena Zannoni	1	-1/+26
2002-02-25	* ppc-dis.c (powerpc_dialect): Handle power4 option.	Alan Modra	1	-1/+5
2002-02-19	* ppc-opc.c (powerpc_dialect): Fix comment; BookE is not Motorola	Matthew Green	1	-2/+2
2001-11-15	binutils/ChangeLog	Alan Modra	1	-6/+18
2001-10-13	[gas/ChangeLog]	Matthew Green	1	-12/+26
2001-03-13	Fix typos in ChangeLogs; fix dates in copyright notices	Nick Clifton	1	-1/+1
2000-05-03	* ppc-opc.c (VA, VB, VC, VD, VS, SIMM, UIMM, SHB): New macros, for	J.T. Conklin	1	-4/+10
2000-04-14	More portability patches. Include sysdep.h everywhere.	Alan Modra	1	-1/+0
1999-05-03	19990502 sourceware importbinu_ss_19990502	Richard Henderson	1	-0/+238

/* Remote utility routines for the remote server for GDB. Copyright (C) 1986, 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "server.h" #include "terminal.h" #include <stdio.h> #include <string.h> #if HAVE_SYS_IOCTL_H #include <sys/ioctl.h> #endif #if HAVE_SYS_FILE_H #include <sys/file.h> #endif #if HAVE_NETINET_IN_H #include <netinet/in.h> #endif #if HAVE_SYS_SOCKET_H #include <sys/socket.h> #endif #if HAVE_NETDB_H #include <netdb.h> #endif #if HAVE_NETINET_TCP_H #include <netinet/tcp.h> #endif #if HAVE_SYS_IOCTL_H #include <sys/ioctl.h> #endif #if HAVE_SIGNAL_H #include <signal.h> #endif #if HAVE_FCNTL_H #include <fcntl.h> #endif #include <sys/time.h> #if HAVE_UNISTD_H #include <unistd.h> #endif #if HAVE_ARPA_INET_H #include <arpa/inet.h> #endif #include <sys/stat.h> #if HAVE_ERRNO_H #include <errno.h> #endif #if USE_WIN32API #include <winsock.h> #endif #ifndef HAVE_SOCKLEN_T typedef int socklen_t; #endif #if USE_WIN32API # define INVALID_DESCRIPTOR INVALID_SOCKET #else # define INVALID_DESCRIPTOR -1 #endif /* A cache entry for a successfully looked-up symbol. */ struct sym_cache { const char *name; CORE_ADDR addr; struct sym_cache *next; }; /* The symbol cache. */ static struct sym_cache *symbol_cache; /* If this flag has been set, assume cache misses are failures. */ int all_symbols_looked_up; int remote_debug = 0; struct ui_file *gdb_stdlog; static int remote_desc = INVALID_DESCRIPTOR; /* FIXME headerize? */ extern int using_threads; extern int debug_threads; #ifdef USE_WIN32API # define read(fd, buf, len) recv (fd, (char *) buf, len, 0) # define write(fd, buf, len) send (fd, (char *) buf, len, 0) #endif /* Open a connection to a remote debugger. NAME is the filename used for communication. */ void remote_open (char *name) { #if defined(F_SETFL) && defined (FASYNC) int save_fcntl_flags; #endif char *port_str; port_str = strchr (name, ':'); if (port_str == NULL) { #ifdef USE_WIN32API error ("Only <host>:<port> is supported on this platform."); #else struct stat statbuf; if (stat (name, &statbuf) == 0 && (S_ISCHR (statbuf.st_mode) || S_ISFIFO (statbuf.st_mode))) remote_desc = open (name, O_RDWR); else { errno = EINVAL; remote_desc = -1; } if (remote_desc < 0) perror_with_name ("Could not open remote device"); #ifdef HAVE_TERMIOS { struct termios termios; tcgetattr (remote_desc, &termios); termios.c_iflag = 0; termios.c_oflag = 0; termios.c_lflag = 0; termios.c_cflag &= ~(CSIZE | PARENB); termios.c_cflag |= CLOCAL | CS8; termios.c_cc[VMIN] = 1; termios.c_cc[VTIME] = 0; tcsetattr (remote_desc, TCSANOW, &termios); } #endif #ifdef HAVE_TERMIO { struct termio termio; ioctl (remote_desc, TCGETA, &termio); termio.c_iflag = 0; termio.c_oflag = 0; termio.c_lflag = 0; termio.c_cflag &= ~(CSIZE | PARENB); termio.c_cflag |= CLOCAL | CS8; termio.c_cc[VMIN] = 1; termio.c_cc[VTIME] = 0; ioctl (remote_desc, TCSETA, &termio); } #endif #ifdef HAVE_SGTTY { struct sgttyb sg; ioctl (remote_desc, TIOCGETP, &sg); sg.sg_flags = RAW; ioctl (remote_desc, TIOCSETP, &sg); } #endif fprintf (stderr, "Remote debugging using %s\n", name); #endif /* USE_WIN32API */ } else { #ifdef USE_WIN32API static int winsock_initialized; #endif int port; struct sockaddr_in sockaddr; socklen_t tmp; int tmp_desc; char *port_end; port = strtoul (port_str + 1, &port_end, 10); if (port_str[1] == '\0' || *port_end != '\0') fatal ("Bad port argument: %s", name); #ifdef USE_WIN32API if (!winsock_initialized) { WSADATA wsad; WSAStartup (MAKEWORD (1, 0), &wsad); winsock_initialized = 1; } #endif tmp_desc = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP); if (tmp_desc < 0) perror_with_name ("Can't open socket"); /* Allow rapid reuse of this port. */ tmp = 1; setsockopt (tmp_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, sizeof (tmp)); sockaddr.sin_family = PF_INET; sockaddr.sin_port = htons (port); sockaddr.sin_addr.s_addr = INADDR_ANY; if (bind (tmp_desc, (struct sockaddr *) &sockaddr, sizeof (sockaddr)) || listen (tmp_desc, 1)) perror_with_name ("Can't bind address"); /* If port is zero, a random port will be selected, and the fprintf below needs to know what port was selected. */ if (port == 0) { socklen_t len = sizeof (sockaddr); if (getsockname (tmp_desc, (struct sockaddr *) &sockaddr, &len) < 0 || len < sizeof (sockaddr)) perror_with_name ("Can't determine port"); port = ntohs (sockaddr.sin_port); } fprintf (stderr, "Listening on port %d\n", port); fflush (stderr); tmp = sizeof (sockaddr); remote_desc = accept (tmp_desc, (struct sockaddr *) &sockaddr, &tmp); if (remote_desc == -1) perror_with_name ("Accept failed"); /* Enable TCP keep alive process. */ tmp = 1; setsockopt (remote_desc, SOL_SOCKET, SO_KEEPALIVE, (char *) &tmp, sizeof (tmp)); /* Tell TCP not to delay small packets. This greatly speeds up interactive response. */ tmp = 1; setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY, (char *) &tmp, sizeof (tmp)); #ifndef USE_WIN32API close (tmp_desc); /* No longer need this */ signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply exits when the remote side dies. */ #else closesocket (tmp_desc); /* No longer need this */ #endif /* Convert IP address to string. */ fprintf (stderr, "Remote debugging from host %s\n", inet_ntoa (sockaddr.sin_addr)); } #if defined(F_SETFL) && defined (FASYNC) save_fcntl_flags = fcntl (remote_desc, F_GETFL, 0); fcntl (remote_desc, F_SETFL, save_fcntl_flags | FASYNC); #if defined (F_SETOWN) fcntl (remote_desc, F_SETOWN, getpid ()); #endif #endif } void remote_close (void) { #ifdef USE_WIN32API closesocket (remote_desc); #else close (remote_desc); #endif } /* Convert hex digit A to a number. */ static int fromhex (int a) { if (a >= '0' && a <= '9') return a - '0'; else if (a >= 'a' && a <= 'f') return a - 'a' + 10; else error ("Reply contains invalid hex digit"); return 0; } int unhexify (char *bin, const char *hex, int count) { int i; for (i = 0; i < count; i++) { if (hex[0] == 0 || hex[1] == 0) { /* Hex string is short, or of uneven length. Return the count that has been converted so far. */ return i; } *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); hex += 2; } return i; } void decode_address (CORE_ADDR *addrp, const char *start, int len) { CORE_ADDR addr; char ch; int i; addr = 0; for (i = 0; i < len; i++) { ch = start[i]; addr = addr << 4; addr = addr | (fromhex (ch) & 0x0f); } *addrp = addr; } const char * decode_address_to_semicolon (CORE_ADDR *addrp, const char *start) { const char *end; end = start; while (*end != '\0' && *end != ';') end++; decode_address (addrp, start, end - start); if (*end == ';') end++; return end; } /* Convert number NIB to a hex digit. */ static int tohex (int nib) { if (nib < 10) return '0' + nib; else return 'a' + nib - 10; } int hexify (char *hex, const char *bin, int count) { int i; /* May use a length, or a nul-terminated string as input. */ if (count == 0) count = strlen (bin); for (i = 0; i < count; i++) { *hex++ = tohex ((*bin >> 4) & 0xf); *hex++ = tohex (*bin++ & 0xf); } *hex = 0; return i; } /* Convert BUFFER, binary data at least LEN bytes long, into escaped binary data in OUT_BUF. Set *OUT_LEN to the length of the data encoded in OUT_BUF, and return the number of bytes in OUT_BUF (which may be more than *OUT_LEN due to escape characters). The total number of bytes in the output buffer will be at most OUT_MAXLEN. */ int remote_escape_output (const gdb_byte *buffer, int len, gdb_byte *out_buf, int *out_len, int out_maxlen) { int input_index, output_index; output_index = 0; for (input_index = 0; input_index < len; input_index++) { gdb_byte b = buffer[input_index]; if (b == '$' || b == '#' || b == '}' || b == '*') { /* These must be escaped. */ if (output_index + 2 > out_maxlen) break; out_buf[output_index++] = '}'; out_buf[output_index++] = b ^ 0x20; } else { if (output_index + 1 > out_maxlen) break; out_buf[output_index++] = b; } } *out_len = input_index; return output_index; } /* Convert BUFFER, escaped data LEN bytes long, into binary data in OUT_BUF. Return the number of bytes written to OUT_BUF. Raise an error if the total number of bytes exceeds OUT_MAXLEN. This function reverses remote_escape_output. It allows more escaped characters than that function does, in particular because '*' must be escaped to avoid the run-length encoding processing in reading packets. */ static int remote_unescape_input (const gdb_byte *buffer, int len, gdb_byte *out_buf, int out_maxlen) { int input_index, output_index; int escaped; output_index = 0; escaped = 0; for (input_index = 0; input_index < len; input_index++) { gdb_byte b = buffer[input_index]; if (output_index + 1 > out_maxlen) error ("Received too much data from the target."); if (escaped) { out_buf[output_index++] = b ^ 0x20; escaped = 0; } else if (b == '}') escaped = 1; else out_buf[output_index++] = b; } if (escaped) error ("Unmatched escape character in target response."); return output_index; } /* Look for a sequence of characters which can be run-length encoded. If there are any, update *CSUM and *P. Otherwise, output the single character. Return the number of characters consumed. */ static int try_rle (char *buf, int remaining, unsigned char *csum, char **p) { int n; /* Always output the character. */ *csum += buf[0]; *(*p)++ = buf[0]; /* Don't go past '~'. */ if (remaining > 97) remaining = 97; for (n = 1; n < remaining; n++) if (buf[n] != buf[0]) break; /* N is the index of the first character not the same as buf[0]. buf[0] is counted twice, so by decrementing N, we get the number of characters the RLE sequence will replace. */ n--; if (n < 3) return 1; /* Skip the frame characters. The manual says to skip '+' and '-' also, but there's no reason to. Unfortunately these two unusable characters double the encoded length of a four byte zero value. */ while (n + 29 == '$' || n + 29 == '#') n--; *csum += '*'; *(*p)++ = '*'; *csum += n + 29; *(*p)++ = n + 29; return n + 1; } /* Send a packet to the remote machine, with error checking. The data of the packet is in BUF, and the length of the packet is in CNT. Returns >= 0 on success, -1 otherwise. */ int putpkt_binary (char *buf, int cnt) { int i; unsigned char csum = 0; char *buf2; char buf3[1]; char *p; buf2 = malloc (PBUFSIZ); /* Copy the packet into buffer BUF2, encapsulating it and giving it a checksum. */ p = buf2; *p++ = '$'; for (i = 0; i < cnt;) i += try_rle (buf + i, cnt - i, &csum, &p); *p++ = '#'; *p++ = tohex ((csum >> 4) & 0xf); *p++ = tohex (csum & 0xf); *p = '\0'; /* Send it over and over until we get a positive ack. */ do { int cc; if (write (remote_desc, buf2, p - buf2) != p - buf2) { perror ("putpkt(write)"); free (buf2); return -1; } if (remote_debug) { fprintf (stderr, "putpkt (\"%s\"); [looking for ack]\n", buf2); fflush (stderr); } cc = read (remote_desc, buf3, 1); if (remote_debug) { fprintf (stderr, "[received '%c' (0x%x)]\n", buf3[0], buf3[0]); fflush (stderr); } if (cc <= 0) { if (cc == 0) fprintf (stderr, "putpkt(read): Got EOF\n"); else perror ("putpkt(read)"); free (buf2); return -1; } /* Check for an input interrupt while we're here. */ if (buf3[0] == '\003' && current_inferior != NULL) (*the_target->request_interrupt) (); } while (buf3[0] != '+'); free (buf2); return 1; /* Success! */ } /* Send a packet to the remote machine, with error checking. The data of the packet is in BUF, and the packet should be a NUL-terminated string. Returns >= 0 on success, -1 otherwise. */ int putpkt (char *buf) { return putpkt_binary (buf, strlen (buf)); } /* Come here when we get an input interrupt from the remote side. This interrupt should only be active while we are waiting for the child to do something. About the only thing that should come through is a ^C, which will cause us to request child interruption. */ static void input_interrupt (int unused) { fd_set readset; struct timeval immediate = { 0, 0 }; /* Protect against spurious interrupts. This has been observed to be a problem under NetBSD 1.4 and 1.5. */ FD_ZERO (&readset); FD_SET (remote_desc, &readset); if (select (remote_desc + 1, &readset, 0, 0, &immediate) > 0) { int cc; char c = 0; cc = read (remote_desc, &c, 1); if (cc != 1 || c != '\003' || current_inferior == NULL) { fprintf (stderr, "input_interrupt, count = %d c = %d ('%c')\n", cc, c, c); return; } (*the_target->request_interrupt) (); } } /* Check if the remote side sent us an interrupt request (^C). */ void check_remote_input_interrupt_request (void) { /* This function may be called before establishing communications, therefore we need to validate the remote descriptor. */ if (remote_desc == INVALID_DESCRIPTOR) return; input_interrupt (0); } /* Asynchronous I/O support. SIGIO must be enabled when waiting, in order to accept Control-C from the client, and must be disabled when talking to the client. */ static void unblock_async_io (void) { #ifndef USE_WIN32API sigset_t sigio_set; sigemptyset (&sigio_set); sigaddset (&sigio_set, SIGIO); sigprocmask (SIG_UNBLOCK, &sigio_set, NULL); #endif } /* Current state of asynchronous I/O. */ static int async_io_enabled; /* Enable asynchronous I/O. */ void enable_async_io (void) { if (async_io_enabled) return; #ifndef USE_WIN32API signal (SIGIO, input_interrupt); #endif async_io_enabled = 1; } /* Disable asynchronous I/O. */ void disable_async_io (void) { if (!async_io_enabled) return; #ifndef USE_WIN32API signal (SIGIO, SIG_IGN); #endif async_io_enabled = 0; } void initialize_async_io (void) { /* Make sure that async I/O starts disabled. */ async_io_enabled = 1; disable_async_io (); /* Make sure the signal is unblocked. */ unblock_async_io (); } /* Returns next char from remote GDB. -1 if error. */ static int readchar (void) { static unsigned char buf[BUFSIZ]; static int bufcnt = 0; static unsigned char *bufp; if (bufcnt-- > 0) return *bufp++; bufcnt = read (remote_desc, buf, sizeof (buf)); if (bufcnt <= 0) { if (bufcnt == 0) fprintf (stderr, "readchar: Got EOF\n"); else perror ("readchar"); return -1; } bufp = buf; bufcnt--; return *bufp++; } /* Read a packet from the remote machine, with error checking, and store it in BUF. Returns length of packet, or negative if error. */ int getpkt (char *buf) { char *bp; unsigned char csum, c1, c2; int c; while (1) { csum = 0; while (1) { c = readchar (); if (c == '$') break; if (remote_debug) { fprintf (stderr, "[getpkt: discarding char '%c']\n", c); fflush (stderr); } if (c < 0) return -1; } bp = buf; while (1) { c = readchar (); if (c < 0) return -1; if (c == '#') break; *bp++ = c; csum += c; } *bp = 0; c1 = fromhex (readchar ()); c2 = fromhex (readchar ()); if (csum == (c1 << 4) + c2) break; fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n", (c1 << 4) + c2, csum, buf); write (remote_desc, "-", 1); } if (remote_debug) { fprintf (stderr, "getpkt (\"%s\"); [sending ack] \n", buf); fflush (stderr); } write (remote_desc, "+", 1); if (remote_debug) { fprintf (stderr, "[sent ack]\n"); fflush (stderr); } return bp - buf; } void write_ok (char *buf) { buf[0] = 'O'; buf[1] = 'K'; buf[2] = '\0'; } void write_enn (char *buf) { /* Some day, we should define the meanings of the error codes... */ buf[0] = 'E'; buf[1] = '0'; buf[2] = '1'; buf[3] = '\0'; } void convert_int_to_ascii (unsigned char *from, char *to, int n) { int nib; int ch; while (n--) { ch = *from++; nib = ((ch & 0xf0) >> 4) & 0x0f; *to++ = tohex (nib); nib = ch & 0x0f; *to++ = tohex (nib); } *to++ = 0; } void convert_ascii_to_int (char *from, unsigned char *to, int n) { int nib1, nib2; while (n--) { nib1 = fromhex (*from++); nib2 = fromhex (*from++); *to++ = (((nib1 & 0x0f) << 4) & 0xf0) | (nib2 & 0x0f); } } static char * outreg (int regno, char *buf) { if ((regno >> 12) != 0) *buf++ = tohex ((regno >> 12) & 0xf); if ((regno >> 8) != 0) *buf++ = tohex ((regno >> 8) & 0xf); *buf++ = tohex ((regno >> 4) & 0xf); *buf++ = tohex (regno & 0xf); *buf++ = ':'; collect_register_as_string (regno, buf); buf += 2 * register_size (regno); *buf++ = ';'; return buf; } void new_thread_notify (int id) { char own_buf[256]; /* The `n' response is not yet part of the remote protocol. Do nothing. */ if (1) return; if (server_waiting == 0) return; sprintf (own_buf, "n%x", id); disable_async_io (); putpkt (own_buf); enable_async_io (); } void dead_thread_notify (int id) { char own_buf[256]; /* The `x' response is not yet part of the remote protocol. Do nothing. */ if (1) return; sprintf (own_buf, "x%x", id); disable_async_io (); putpkt (own_buf); enable_async_io (); } void prepare_resume_reply (char *buf, char status, unsigned char sig) { int nib; *buf++ = status; nib = ((sig & 0xf0) >> 4); *buf++ = tohex (nib); nib = sig & 0x0f; *buf++ = tohex (nib); if (status == 'T') { const char **regp = gdbserver_expedite_regs; if (the_target->stopped_by_watchpoint != NULL && (*the_target->stopped_by_watchpoint) ()) { CORE_ADDR addr; int i; strncpy (buf, "watch:", 6); buf += 6; addr = (*the_target->stopped_data_address) (); /* Convert each byte of the address into two hexadecimal chars. Note that we take sizeof (void *) instead of sizeof (addr); this is to avoid sending a 64-bit address to a 32-bit GDB. */ for (i = sizeof (void *) * 2; i > 0; i--) { *buf++ = tohex ((addr >> (i - 1) * 4) & 0xf); } *buf++ = ';'; } while (*regp) { buf = outreg (find_regno (*regp), buf); regp ++; } /* Formerly, if the debugger had not used any thread features we would not burden it with a thread status response. This was for the benefit of GDB 4.13 and older. However, in recent GDB versions the check (``if (cont_thread != 0)'') does not have the desired effect because of sillyness in the way that the remote protocol handles specifying a thread. Since thread support relies on qSymbol support anyway, assume GDB can handle threads. */ if (using_threads) { unsigned int gdb_id_from_wait; /* FIXME right place to set this? */ thread_from_wait = ((struct inferior_list_entry *)current_inferior)->id; gdb_id_from_wait = thread_to_gdb_id (current_inferior); if (debug_threads) fprintf (stderr, "Writing resume reply for %ld\n\n", thread_from_wait); /* This if (1) ought to be unnecessary. But remote_wait in GDB will claim this event belongs to inferior_ptid if we do not specify a thread, and there's no way for gdbserver to know what inferior_ptid is. */ if (1 || old_thread_from_wait != thread_from_wait) { general_thread = thread_from_wait; sprintf (buf, "thread:%x;", gdb_id_from_wait); buf += strlen (buf); old_thread_from_wait = thread_from_wait; } } if (dlls_changed) { strcpy (buf, "library:;"); buf += strlen (buf); dlls_changed = 0; } } /* For W and X, we're done. */ *buf++ = 0; } void decode_m_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr) { int i = 0, j = 0; char ch; *mem_addr_ptr = *len_ptr = 0; while ((ch = from[i++]) != ',') { *mem_addr_ptr = *mem_addr_ptr << 4; *mem_addr_ptr |= fromhex (ch) & 0x0f; } for (j = 0; j < 4; j++) { if ((ch = from[i++]) == 0) break; *len_ptr = *len_ptr << 4; *len_ptr |= fromhex (ch) & 0x0f; } } void decode_M_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr, unsigned char *to) { int i = 0; char ch; *mem_addr_ptr = *len_ptr = 0; while ((ch = from[i++]) != ',') { *mem_addr_ptr = *mem_addr_ptr << 4; *mem_addr_ptr |= fromhex (ch) & 0x0f; } while ((ch = from[i++]) != ':') { *len_ptr = *len_ptr << 4; *len_ptr |= fromhex (ch) & 0x0f; } convert_ascii_to_int (&from[i++], to, *len_ptr); } int decode_X_packet (char *from, int packet_len, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr, unsigned char *to) { int i = 0; char ch; *mem_addr_ptr = *len_ptr = 0; while ((ch = from[i++]) != ',') { *mem_addr_ptr = *mem_addr_ptr << 4; *mem_addr_ptr |= fromhex (ch) & 0x0f; } while ((ch = from[i++]) != ':') { *len_ptr = *len_ptr << 4; *len_ptr |= fromhex (ch) & 0x0f; } if (remote_unescape_input ((const gdb_byte *) &from[i], packet_len - i, to, *len_ptr) != *len_ptr) return -1; return 0; } /* Decode a qXfer write request. */ int decode_xfer_write (char *buf, int packet_len, char **annex, CORE_ADDR *offset, unsigned int *len, unsigned char *data) { char ch; /* Extract and NUL-terminate the annex. */ *annex = buf; while (*buf && *buf != ':') buf++; if (*buf == '\0') return -1; *buf++ = 0; /* Extract the offset. */ *offset = 0; while ((ch = *buf++) != ':') { *offset = *offset << 4; *offset |= fromhex (ch) & 0x0f; } /* Get encoded data. */ packet_len -= buf - *annex; *len = remote_unescape_input ((const gdb_byte *) buf, packet_len, data, packet_len); return 0; } /* Ask GDB for the address of NAME, and return it in ADDRP if found. Returns 1 if the symbol is found, 0 if it is not, -1 on error. */ int look_up_one_symbol (const char *name, CORE_ADDR *addrp) { char own_buf[266], *p, *q; int len; struct sym_cache *sym; /* Check the cache first. */ for (sym = symbol_cache; sym; sym = sym->next) if (strcmp (name, sym->name) == 0) { *addrp = sym->addr; return 1; } /* If we've passed the call to thread_db_look_up_symbols, then anything not in the cache must not exist; we're not interested in any libraries loaded after that point, only in symbols in libpthread.so. It might not be an appropriate time to look up a symbol, e.g. while we're trying to fetch registers. */ if (all_symbols_looked_up) return 0; /* Send the request. */ strcpy (own_buf, "qSymbol:"); hexify (own_buf + strlen ("qSymbol:"), name, strlen (name)); if (putpkt (own_buf) < 0) return -1; /* FIXME: Eventually add buffer overflow checking (to getpkt?) */ len = getpkt (own_buf); if (len < 0) return -1; /* We ought to handle pretty much any packet at this point while we wait for the qSymbol "response". That requires re-entering the main loop. For now, this is an adequate approximation; allow GDB to read from memory while it figures out the address of the symbol. */ while (own_buf[0] == 'm') { CORE_ADDR mem_addr; unsigned char *mem_buf; unsigned int mem_len; decode_m_packet (&own_buf[1], &mem_addr, &mem_len); mem_buf = malloc (mem_len); if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0) convert_int_to_ascii (mem_buf, own_buf, mem_len); else write_enn (own_buf); free (mem_buf); if (putpkt (own_buf) < 0) return -1; len = getpkt (own_buf); if (len < 0) return -1; } if (strncmp (own_buf, "qSymbol:", strlen ("qSymbol:")) != 0) { warning ("Malformed response to qSymbol, ignoring: %s\n", own_buf); return -1; } p = own_buf + strlen ("qSymbol:"); q = p; while (*q && *q != ':') q++; /* Make sure we found a value for the symbol. */ if (p == q || *q == '\0') return 0; decode_address (addrp, p, q - p); /* Save the symbol in our cache. */ sym = malloc (sizeof (*sym)); sym->name = strdup (name); sym->addr = *addrp; sym->next = symbol_cache; symbol_cache = sym; return 1; } void monitor_output (const char *msg) { char *buf = malloc (strlen (msg) * 2 + 2); buf[0] = 'O'; hexify (buf + 1, msg, 0); putpkt (buf); free (buf); } /* Return a malloc allocated string with special characters from TEXT replaced by entity references. */ char * xml_escape_text (const char *text) { char *result; int i, special; /* Compute the length of the result. */ for (i = 0, special = 0; text[i] != '\0'; i++) switch (text[i]) { case '\'': case '\"': special += 5; break; case '&': special += 4; break; case '<': case '>': special += 3; break; default: break; } /* Expand the result. */ result = malloc (i + special + 1); for (i = 0, special = 0; text[i] != '\0'; i++) switch (text[i]) { case '\'': strcpy (result + i + special, "'"); special += 5; break; case '\"': strcpy (result + i + special, """); special += 5; break; case '&': strcpy (result + i + special, "&"); special += 4; break; case '<': strcpy (result + i + special, "<"); special += 3; break; case '>': strcpy (result + i + special, ">"); special += 3; break; default: result[i + special] = text[i]; break; } result[i + special] = '\0'; return result; }