From b96ec7ac6d8385eee134828a87da0eaadfd69fbd Mon Sep 17 00:00:00 2001 From: Andrew Cagney Date: Fri, 24 Sep 2004 19:51:18 +0000 Subject: [PATCH] 2004-09-24 Robert Picco Committed by Andrew Cagney. * remote.c (set_remote_protocol_p_packet_cmd, remote_protocol_p) (show_remote_protocol_p_packet_cmd): New. Implement 'p' packet. configuration. (fetch_register_using_p): Implement 'p' packet. Based on code by Fernando Nasser. (remote_fetch_registers): Call fetch_register_using_p. (init_all_packet_configs, show_remote_cmd) (_initialize_remote): Add p-packet. --- gdb/ChangeLog | 12 ++++++++ gdb/remote.c | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 93 insertions(+) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 74a0283f1b4..d27a0cd2f0f 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,15 @@ +2004-09-24 Robert Picco + + Committed by Andrew Cagney. + * remote.c (set_remote_protocol_p_packet_cmd, remote_protocol_p) + (show_remote_protocol_p_packet_cmd): New. Implement 'p' packet. + configuration. + (fetch_register_using_p): Implement 'p' packet. Based on code by + Fernando Nasser. + (remote_fetch_registers): Call fetch_register_using_p. + (init_all_packet_configs, show_remote_cmd) + (_initialize_remote): Add p-packet. + 2004-09-24 Mark Kettenis * inf-ptrace.c (inf_ptrace_kill_inferior): Call ptrace directly diff --git a/gdb/remote.c b/gdb/remote.c index 497f97242cc..5ea5d12d943 100644 --- a/gdb/remote.c +++ b/gdb/remote.c @@ -961,6 +961,23 @@ show_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, show_packet_config_cmd (&remote_protocol_qPart_auxv); } +static struct packet_config remote_protocol_p; + +static void +set_remote_protocol_p_packet_cmd (char *args, int from_tty, + struct cmd_list_element *c) +{ + update_packet_config (&remote_protocol_p); +} + +static void +show_remote_protocol_p_packet_cmd (char *args, int from_tty, + struct cmd_list_element *c) +{ + show_packet_config_cmd (&remote_protocol_p); +} + + /* Tokens for use by the asynchronous signal handlers for SIGINT */ static void *sigint_remote_twice_token; @@ -2041,6 +2058,7 @@ init_all_packet_configs (void) { int i; update_packet_config (&remote_protocol_P); + update_packet_config (&remote_protocol_p); update_packet_config (&remote_protocol_qSymbol); update_packet_config (&remote_protocol_vcont); for (i = 0; i < NR_Z_PACKET_TYPES; i++) @@ -3150,6 +3168,36 @@ static int register_bytes_found; /* Read the remote registers into the block REGS. */ /* Currently we just read all the registers, so we don't use regnum. */ +static int +fetch_register_using_p (int regnum) +{ + struct remote_state *rs = get_remote_state (); + char *buf = alloca (rs->remote_packet_size), *p; + char regp[MAX_REGISTER_SIZE]; + int i; + + buf[0] = 'p'; + bin2hex((char *) ®num, &buf[1], sizeof(regnum)); + buf[9] = 0; + remote_send (buf, rs->remote_packet_size); + if (buf[0] != 0 && buf[0] != 'E') { + p = buf; + i = 0; + while (p[0] != 0) { + if (p[1] == 0) { + error("fetch_register_using_p: early buf termination"); + return 0; + } + regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); + p += 2; + } + regcache_raw_supply (current_regcache, regnum, regp); + return 1; + } + + return 0; +} + static void remote_fetch_registers (int regnum) { @@ -3170,6 +3218,31 @@ remote_fetch_registers (int regnum) "Attempt to fetch a non G-packet register when this " "remote.c does not support the p-packet."); } + switch (remote_protocol_p.support) + { + case PACKET_DISABLE: + break; + case PACKET_ENABLE: + if (fetch_register_using_p (regnum)) + return; + else + error ("Protocol error: p packet not recognized by stub"); + case PACKET_SUPPORT_UNKNOWN: + if (fetch_register_using_p (regnum)) + { + /* The stub recognized the 'p' packet. Remember this. */ + remote_protocol_p.support = PACKET_ENABLE; + return; + } + else + { + /* The stub does not support the 'P' packet. Use 'G' + instead, and don't try using 'P' in the future (it + will just waste our time). */ + remote_protocol_p.support = PACKET_DISABLE; + break; + } + } sprintf (buf, "g"); remote_send (buf, (rs->remote_packet_size)); @@ -5332,6 +5405,7 @@ show_remote_cmd (char *args, int from_tty) remote_show_cmdlist for a list of sub commands to show. */ show_remote_protocol_Z_packet_cmd (args, from_tty, NULL); show_remote_protocol_P_packet_cmd (args, from_tty, NULL); + show_remote_protocol_p_packet_cmd (args, from_tty, NULL); show_remote_protocol_qSymbol_packet_cmd (args, from_tty, NULL); show_remote_protocol_vcont_packet_cmd (args, from_tty, NULL); show_remote_protocol_binary_download_cmd (args, from_tty, NULL); @@ -5528,6 +5602,13 @@ in a memory packet.\n", &remote_set_cmdlist, &remote_show_cmdlist, 1); + add_packet_config_cmd (&remote_protocol_p, + "p", "fetch-register", + set_remote_protocol_p_packet_cmd, + show_remote_protocol_p_packet_cmd, + &remote_set_cmdlist, &remote_show_cmdlist, + 1); + add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], "Z0", "software-breakpoint", set_remote_protocol_Z_software_bp_packet_cmd, -- 2.30.2