[v2,27/38] gdbserver: implement get_thread / set_thread commands

Message ID	20220329154931.493851-28-npiggin@gmail.com
State	New
Headers	show Return-Path: <pdbg-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> From: Nicholas Piggin <npiggin@gmail.com> To: pdbg@lists.ozlabs.org Date: Wed, 30 Mar 2022 01:49:20 +1000 Message-Id: <20220329154931.493851-28-npiggin@gmail.com> In-Reply-To: <20220329154931.493851-1-npiggin@gmail.com> References: <20220329154931.493851-1-npiggin@gmail.com> MIME-Version: 1.0 Subject: [Pdbg] [PATCH v2 27/38] gdbserver: implement get_thread / set_thread commands Precedence: list Cc: Nicholas Piggin <npiggin@gmail.com> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: pdbg-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Pdbg" <pdbg-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org>
Series	gdbserver multi-threaded debugging and POWER9/10 support \| expand [v2,00/38] gdbserver multi-threaded debugging and POWER9/10 support [v2,01/38] gdbserver: fix put_mem command parsing [v2,02/38] libpdbg: fix p9chip and p10chip thread_stop [v2,03/38] gdbserver: update gdb_parser_precompile.c, rename detach command [v2,04/38] gdbserver: include <port> argument in command line help text [v2,05/38] gdbserver: Document problem and workaround for client remote timeouts [v2,06/38] gdbserver: print some client/server info [v2,07/38] gdbserver: Make command static [v2,08/38] gdbserver: use standard compatibility test calls [v2,09/38] gdbserver: fix read buffer overflow [v2,10/38] gdbserver: reduce PR_INFO noise [v2,11/38] gdbserver: fix interrupt double stop reason response [v2,12/38] libpdbg: thread_regs don't print regs [v2,13/38] gdbserver: lexer fixes [v2,14/38] gdbserver: put_mem handle arbitrary lengths [v2,15/38] gdbserver: implement NoAckMode [v2,16/38] libpdbg: Remove enable_attn target command [v2,17/38] gdbserver: disable attn after breaking [v2,18/38] gdbserver: use read-modify-write for put_mem that is not 8-byte aligned [v2,19/38] gdbserver: enable POWER9 support [v2,20/38] gdbserver: Add POWER10 support [v2,21/38] gdbserver: check for attn using the SPATTN register [v2,22/38] gdbserver: test endian when it is required [v2,23/38] gdbserver: catch ctrl-C [v2,24/38] gdbserver: return more registers [v2,25/38] gdbserver: initial thread support [v2,26/38] gdbserver: track attn enablement by breakpoints [v2,27/38] gdbserver: implement get_thread / set_thread commands [v2,28/38] gdbserver: add multi-threaded start/stop helper functions [v2,29/38] gdbserver: tidy poll() [v2,30/38] gdbserver: multi-thread polling and stop-reason [v2,31/38] gdbserver: track stop reason per thread [v2,32/38] gdbserver: multithread debugging support [v2,33/38] gdbserver: allow gdbserver to start with targets running [v2,34/38] gdbserver: better deal with threads initially stopped [v2,35/38] gdbserver: send regs with stop reason [v2,36/38] gdbserver: use thread_stop_all() / thread_start_all() [v2,37/38] gdbserver: handle gdb breakpoint commands [v2,38/38] gdbserver: remove fallback breakpoint support in put_mem

diff --git a/src/gdb_parser.rl b/src/gdb_parser.rl index e49d56d..dc1275c 100644 --- a/src/gdb_parser.rl +++ b/src/gdb_parser.rl @@ -106,8 +106,6 @@ stop_reason = ('?' @{cmd = STOP_REASON;}); - set_thread = ('H' any* @{cmd = SET_THREAD;}); - detach = ('D' @{cmd = DETACH;} xdigit+ $hex_digit %push); @@ -118,6 +116,10 @@ qf_threadinfo = ('qfThreadInfo' @{rsp = "m1l";}); q_start_noack = ('QStartNoAckMode' @{rsp = "OK"; send_ack(priv); ack_mode = false;}); + # thread info + get_thread = ('qC' @{cmd = GET_THREAD;}); + set_thread = ('Hg' ('p' xdigit+ '.')+ xdigit+ $hex_digit %push @{cmd = SET_THREAD;}); + # vCont packet parsing v_contq = ('vCont?' @{rsp = "vCont;c;C;s;S";}); v_contc = ('vCont;c' any* @{cmd = V_CONTC;}); @@ -126,7 +128,7 @@ interrupt = (3 @{ if (command_callbacks) command_callbacks[INTERRUPT](stack, priv); PR_INFO("RAGEL:interrupt\n");}); - commands = (get_mem | get_gprs | get_spr | stop_reason | set_thread | + commands = (get_mem | get_gprs | get_spr | stop_reason | get_thread | set_thread | q_attached | q_C | q_supported | qf_threadinfo | q_C | q_start_noack | v_contq | v_contc | v_conts | put_mem | detach | unknown ); diff --git a/src/gdb_parser_precompile.c b/src/gdb_parser_precompile.c index ba63fac..f09c0f9 100644 --- a/src/gdb_parser_precompile.c +++ b/src/gdb_parser_precompile.c @@ -11,7 +11,7 @@ #include "debug.h" -#line 143 "src/gdb_parser.rl" +#line 145 "src/gdb_parser.rl" static enum gdb_command cmd = NONE; @@ -31,29 +31,30 @@ static bool ack_mode = true; #line 32 "src/gdb_parser.c" static const char _gdb_actions[] = { 0, 1, 0, 1, 1, 1, 2, 1, - 3, 1, 16, 1, 22, 1, 23, 1, - 24, 1, 25, 2, 0, 1, 2, 2, + 3, 1, 15, 1, 23, 1, 24, 1, + 25, 1, 26, 2, 0, 1, 2, 2, 1, 2, 3, 1, 2, 3, 5, 2, - 4, 1, 2, 12, 1, 2, 14, 1, - 2, 15, 1, 2, 16, 1, 2, 17, - 1, 2, 18, 1, 2, 19, 1, 2, - 20, 1, 2, 21, 1, 3, 0, 6, - 1, 3, 0, 7, 1, 3, 0, 9, - 1, 3, 0, 10, 1, 3, 0, 11, - 1, 3, 0, 13, 1, 3, 2, 8, - 1 + 4, 1, 2, 13, 1, 2, 15, 1, + 2, 16, 1, 2, 17, 1, 2, 20, + 1, 2, 21, 1, 2, 22, 1, 3, + 0, 6, 1, 3, 0, 7, 1, 3, + 0, 9, 1, 3, 0, 10, 1, 3, + 0, 11, 1, 3, 0, 12, 1, 3, + 2, 8, 1, 3, 3, 19, 1, 3, + 18, 14, 1 }; static const unsigned char _gdb_key_offsets[] = { 0, 0, 11, 12, 18, 24, 31, 38, - 39, 46, 54, 61, 69, 76, 78, 80, - 82, 84, 86, 88, 90, 92, 94, 96, - 98, 100, 102, 104, 111, 119, 124, 126, - 128, 130, 132, 134, 136, 138, 140, 147, - 149, 151, 153, 155, 157, 159, 161, 163, - 165, 166, 168, 170, 172, 174, 176, 178, - 180, 182, 184, 186, 188, 190, 192, 194, - 197, 200, 201, 202 + 40, 42, 49, 57, 65, 72, 79, 87, + 94, 102, 109, 111, 113, 115, 117, 119, + 121, 123, 125, 127, 129, 131, 133, 135, + 137, 144, 152, 157, 159, 161, 163, 165, + 167, 169, 171, 173, 180, 182, 184, 186, + 188, 190, 192, 194, 196, 198, 199, 201, + 203, 205, 207, 209, 211, 213, 215, 217, + 219, 221, 223, 225, 227, 230, 233, 234, + 235 }; static const char _gdb_trans_keys[] = { @@ -61,64 +62,71 @@ static const char _gdb_trans_keys[] = { 112, 113, 118, 35, 48, 57, 65, 70, 97, 102, 48, 57, 65, 70, 97, 102, 35, 48, 57, 65, 70, 97, 102, 35, - 48, 57, 65, 70, 97, 102, 35, 35, - 48, 57, 65, 70, 97, 102, 35, 44, - 48, 57, 65, 70, 97, 102, 35, 48, - 57, 65, 70, 97, 102, 35, 58, 48, - 57, 65, 70, 97, 102, 35, 48, 57, - 65, 70, 97, 102, 35, 83, 35, 116, - 35, 97, 35, 114, 35, 116, 35, 78, - 35, 111, 35, 65, 35, 99, 35, 107, - 35, 77, 35, 111, 35, 100, 35, 101, + 48, 57, 65, 70, 97, 102, 35, 103, + 35, 112, 35, 48, 57, 65, 70, 97, + 102, 35, 46, 48, 57, 65, 70, 97, + 102, 35, 112, 48, 57, 65, 70, 97, + 102, 35, 48, 57, 65, 70, 97, 102, 35, 48, 57, 65, 70, 97, 102, 35, 44, 48, 57, 65, 70, 97, 102, 35, - 65, 67, 83, 102, 35, 116, 35, 116, - 35, 97, 35, 99, 35, 104, 35, 101, - 35, 100, 35, 58, 35, 48, 57, 65, - 70, 97, 102, 35, 117, 35, 112, 35, - 112, 35, 111, 35, 114, 35, 116, 35, - 101, 35, 100, 35, 58, 35, 35, 84, - 35, 104, 35, 114, 35, 101, 35, 97, - 35, 100, 35, 73, 35, 110, 35, 102, - 35, 111, 35, 67, 35, 111, 35, 110, - 35, 116, 35, 59, 63, 35, 99, 115, - 35, 35, 3, 36, 43, 45, 0 + 48, 57, 65, 70, 97, 102, 35, 58, + 48, 57, 65, 70, 97, 102, 35, 48, + 57, 65, 70, 97, 102, 35, 83, 35, + 116, 35, 97, 35, 114, 35, 116, 35, + 78, 35, 111, 35, 65, 35, 99, 35, + 107, 35, 77, 35, 111, 35, 100, 35, + 101, 35, 48, 57, 65, 70, 97, 102, + 35, 44, 48, 57, 65, 70, 97, 102, + 35, 65, 67, 83, 102, 35, 116, 35, + 116, 35, 97, 35, 99, 35, 104, 35, + 101, 35, 100, 35, 58, 35, 48, 57, + 65, 70, 97, 102, 35, 117, 35, 112, + 35, 112, 35, 111, 35, 114, 35, 116, + 35, 101, 35, 100, 35, 58, 35, 35, + 84, 35, 104, 35, 114, 35, 101, 35, + 97, 35, 100, 35, 73, 35, 110, 35, + 102, 35, 111, 35, 67, 35, 111, 35, + 110, 35, 116, 35, 59, 63, 35, 99, + 115, 35, 35, 3, 36, 43, 45, 0 }; static const char _gdb_single_lengths[] = { - 0, 11, 1, 0, 0, 1, 1, 1, - 1, 2, 1, 2, 1, 2, 2, 2, + 0, 11, 1, 0, 0, 1, 1, 2, + 2, 1, 2, 2, 1, 1, 2, 1, + 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 1, 2, 5, 2, 2, - 2, 2, 2, 2, 2, 2, 1, 2, + 1, 2, 5, 2, 2, 2, 2, 2, + 2, 2, 2, 1, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 1, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 3, - 3, 1, 1, 4 + 2, 2, 2, 2, 3, 3, 1, 1, + 4 }; static const char _gdb_range_lengths[] = { 0, 0, 0, 3, 3, 3, 3, 0, - 3, 3, 3, 3, 3, 0, 0, 0, + 0, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 3, 3, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 3, 0, + 3, 3, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0 + 0 }; static const short _gdb_index_offsets[] = { 0, 0, 12, 14, 18, 22, 27, 32, - 34, 39, 45, 50, 56, 61, 64, 67, - 70, 73, 76, 79, 82, 85, 88, 91, - 94, 97, 100, 103, 108, 114, 120, 123, - 126, 129, 132, 135, 138, 141, 144, 149, - 152, 155, 158, 161, 164, 167, 170, 173, - 176, 178, 181, 184, 187, 190, 193, 196, - 199, 202, 205, 208, 211, 214, 217, 220, - 224, 228, 230, 232 + 35, 38, 43, 49, 55, 60, 65, 71, + 76, 82, 87, 90, 93, 96, 99, 102, + 105, 108, 111, 114, 117, 120, 123, 126, + 129, 134, 140, 146, 149, 152, 155, 158, + 161, 164, 167, 170, 175, 178, 181, 184, + 187, 190, 193, 196, 199, 202, 204, 207, + 210, 213, 216, 219, 222, 225, 228, 231, + 234, 237, 240, 243, 246, 250, 254, 256, + 258 }; static const char _gdb_indicies[] = { @@ -126,82 +134,85 @@ static const char _gdb_indicies[] = { 9, 10, 11, 0, 13, 12, 14, 14, 14, 15, 16, 16, 16, 15, 13, 17, 17, 17, 12, 18, 17, 17, 17, 12, - 13, 19, 13, 20, 20, 20, 12, 13, - 21, 20, 20, 20, 12, 13, 22, 22, - 22, 12, 13, 23, 22, 22, 22, 12, - 13, 24, 24, 24, 12, 13, 25, 12, - 13, 26, 12, 13, 27, 12, 13, 28, - 12, 13, 29, 12, 13, 30, 12, 13, - 31, 12, 13, 32, 12, 13, 33, 12, - 13, 34, 12, 13, 35, 12, 13, 36, - 12, 13, 37, 12, 13, 38, 12, 13, - 39, 39, 39, 12, 13, 40, 39, 39, - 39, 12, 13, 41, 42, 43, 44, 12, - 13, 45, 12, 13, 46, 12, 13, 47, - 12, 13, 48, 12, 13, 49, 12, 13, - 50, 12, 13, 51, 12, 13, 52, 12, - 13, 53, 53, 53, 12, 13, 54, 12, - 13, 55, 12, 13, 56, 12, 13, 57, - 12, 13, 58, 12, 13, 59, 12, 13, - 60, 12, 13, 61, 12, 13, 62, 12, - 64, 63, 13, 65, 12, 13, 66, 12, - 13, 67, 12, 13, 68, 12, 13, 69, - 12, 13, 70, 12, 13, 71, 12, 13, - 72, 12, 13, 73, 12, 13, 74, 12, - 13, 75, 12, 13, 76, 12, 13, 77, - 12, 13, 78, 12, 13, 79, 80, 12, - 13, 81, 82, 12, 13, 83, 13, 84, - 85, 86, 87, 88, 15, 0 + 13, 19, 12, 13, 20, 12, 13, 21, + 21, 21, 12, 13, 22, 21, 21, 21, + 12, 13, 20, 23, 23, 23, 12, 18, + 23, 23, 23, 12, 13, 24, 24, 24, + 12, 13, 25, 24, 24, 24, 12, 13, + 26, 26, 26, 12, 13, 27, 26, 26, + 26, 12, 13, 28, 28, 28, 12, 13, + 29, 12, 13, 30, 12, 13, 31, 12, + 13, 32, 12, 13, 33, 12, 13, 34, + 12, 13, 35, 12, 13, 36, 12, 13, + 37, 12, 13, 38, 12, 13, 39, 12, + 13, 40, 12, 13, 41, 12, 13, 42, + 12, 13, 43, 43, 43, 12, 13, 44, + 43, 43, 43, 12, 13, 45, 46, 47, + 48, 12, 13, 49, 12, 13, 50, 12, + 13, 51, 12, 13, 52, 12, 13, 53, + 12, 13, 54, 12, 13, 55, 12, 13, + 56, 12, 13, 57, 57, 57, 12, 13, + 58, 12, 13, 59, 12, 13, 60, 12, + 13, 61, 12, 13, 62, 12, 13, 63, + 12, 13, 64, 12, 13, 65, 12, 13, + 66, 12, 68, 67, 13, 69, 12, 13, + 70, 12, 13, 71, 12, 13, 72, 12, + 13, 73, 12, 13, 74, 12, 13, 75, + 12, 13, 76, 12, 13, 77, 12, 13, + 78, 12, 13, 79, 12, 13, 80, 12, + 13, 81, 12, 13, 82, 12, 13, 83, + 84, 12, 13, 85, 86, 12, 13, 87, + 13, 88, 89, 90, 91, 92, 15, 0 }; static const char _gdb_trans_targs[] = { - 2, 3, 2, 5, 7, 8, 13, 2, - 27, 5, 29, 59, 2, 3, 4, 0, - 67, 6, 3, 7, 9, 10, 11, 12, - 12, 14, 15, 16, 17, 18, 19, 20, - 21, 22, 23, 24, 25, 26, 2, 28, - 5, 30, 2, 39, 49, 31, 32, 33, - 34, 35, 36, 37, 38, 38, 40, 41, - 42, 43, 44, 45, 46, 47, 48, 2, - 3, 50, 51, 52, 53, 54, 55, 56, - 57, 58, 2, 60, 61, 62, 63, 64, - 2, 65, 66, 65, 66, 67, 1, 67, - 67 + 2, 3, 2, 5, 7, 13, 18, 2, + 32, 5, 34, 64, 2, 3, 4, 0, + 72, 6, 3, 8, 9, 10, 11, 12, + 14, 15, 16, 17, 17, 19, 20, 21, + 22, 23, 24, 25, 26, 27, 28, 29, + 30, 31, 2, 33, 5, 35, 2, 44, + 54, 36, 37, 38, 39, 40, 41, 42, + 43, 43, 45, 46, 47, 48, 49, 50, + 51, 52, 53, 2, 3, 55, 56, 57, + 58, 59, 60, 61, 62, 63, 2, 65, + 66, 67, 68, 69, 2, 70, 71, 70, + 71, 72, 1, 72, 72 }; static const char _gdb_trans_actions[] = { - 19, 1, 77, 81, 19, 65, 19, 69, - 61, 73, 19, 19, 3, 0, 7, 0, - 28, 25, 5, 34, 25, 22, 25, 85, - 31, 3, 3, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 3, 49, 25, - 22, 3, 40, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 37, 3, 3, - 3, 3, 3, 3, 3, 3, 3, 43, - 9, 3, 3, 3, 3, 3, 3, 3, - 3, 3, 46, 3, 3, 3, 3, 3, - 52, 3, 3, 55, 58, 11, 13, 15, - 17 + 19, 1, 71, 75, 19, 59, 19, 63, + 55, 67, 19, 19, 3, 0, 7, 0, + 28, 25, 5, 3, 3, 3, 3, 83, + 25, 22, 25, 79, 31, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 43, 25, 22, 3, 87, 3, + 3, 3, 3, 3, 3, 3, 3, 3, + 3, 34, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 37, 9, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 40, 3, + 3, 3, 3, 3, 46, 3, 3, 49, + 52, 11, 13, 15, 17 }; -static const int gdb_start = 67; -static const int gdb_first_final = 67; +static const int gdb_start = 72; +static const int gdb_first_final = 72; static const int gdb_error = 0; -static const int gdb_en_main = 67; +static const int gdb_en_main = 72; -#line 159 "src/gdb_parser.rl" +#line 161 "src/gdb_parser.rl" void parser_init(command_cb *callbacks) { -#line 200 "src/gdb_parser.c" +#line 211 "src/gdb_parser.c" { cs = gdb_start; } -#line 163 "src/gdb_parser.rl" +#line 165 "src/gdb_parser.rl" command_callbacks = callbacks; } @@ -212,7 +223,7 @@ int parse_buffer(char *buf, size_t len, void *priv) char *pe = p + len; -#line 216 "src/gdb_parser.c" +#line 227 "src/gdb_parser.c" { int _klen; unsigned int _trans; @@ -399,61 +410,65 @@ _match: break; case 12: #line 109 "src/gdb_parser.rl" - {cmd = SET_THREAD;} + {cmd = DETACH;} break; case 13: -#line 111 "src/gdb_parser.rl" - {cmd = DETACH;} +#line 113 "src/gdb_parser.rl" + {rsp = "1";} break; case 14: -#line 115 "src/gdb_parser.rl" - {rsp = "1";} +#line 114 "src/gdb_parser.rl" + {rsp = "QC1";} break; case 15: -#line 116 "src/gdb_parser.rl" - {rsp = "QC1";} +#line 115 "src/gdb_parser.rl" + {rsp = "multiprocess+;vContSupported+;QStartNoAckMode+"; ack_mode = true;} break; case 16: -#line 117 "src/gdb_parser.rl" - {rsp = "multiprocess+;vContSupported+;QStartNoAckMode+"; ack_mode = true;} +#line 116 "src/gdb_parser.rl" + {rsp = "m1l";} break; case 17: -#line 118 "src/gdb_parser.rl" - {rsp = "m1l";} +#line 117 "src/gdb_parser.rl" + {rsp = "OK"; send_ack(priv); ack_mode = false;} break; case 18: -#line 119 "src/gdb_parser.rl" - {rsp = "OK"; send_ack(priv); ack_mode = false;} +#line 120 "src/gdb_parser.rl" + {cmd = GET_THREAD;} break; case 19: -#line 122 "src/gdb_parser.rl" - {rsp = "vCont;c;C;s;S";} +#line 121 "src/gdb_parser.rl" + {cmd = SET_THREAD;} break; case 20: -#line 123 "src/gdb_parser.rl" - {cmd = V_CONTC;} +#line 124 "src/gdb_parser.rl" + {rsp = "vCont;c;C;s;S";} break; case 21: -#line 124 "src/gdb_parser.rl" - {cmd = V_CONTS;} +#line 125 "src/gdb_parser.rl" + {cmd = V_CONTC;} break; case 22: -#line 127 "src/gdb_parser.rl" - { if (command_callbacks) command_callbacks[INTERRUPT](stack, priv); PR_INFO("RAGEL:interrupt\n");} +#line 126 "src/gdb_parser.rl" + {cmd = V_CONTS;} break; case 23: -#line 135 "src/gdb_parser.rl" - {PR_INFO("RAGEL:cmd\n");} +#line 129 "src/gdb_parser.rl" + { if (command_callbacks) command_callbacks[INTERRUPT](stack, priv); PR_INFO("RAGEL:interrupt\n");} break; case 24: -#line 138 "src/gdb_parser.rl" - {PR_INFO("RAGEL:ack\n");} +#line 137 "src/gdb_parser.rl" + {PR_INFO("RAGEL:cmd\n");} break; case 25: -#line 139 "src/gdb_parser.rl" +#line 140 "src/gdb_parser.rl" + {PR_INFO("RAGEL:ack\n");} + break; + case 26: +#line 141 "src/gdb_parser.rl" {PR_INFO("RAGEL:nack\n");} break; -#line 457 "src/gdb_parser.c" +#line 472 "src/gdb_parser.c" } } @@ -466,7 +481,7 @@ _again: _out: {} } -#line 173 "src/gdb_parser.rl" +#line 175 "src/gdb_parser.rl" if (cs == gdb_error) { printf("parse error\n"); diff --git a/src/pdbgproxy.c b/src/pdbgproxy.c index 756feb5..1d33352 100644 --- a/src/pdbgproxy.c +++ b/src/pdbgproxy.c @@ -93,9 +93,42 @@ void send_ack(void *priv) send(fd, ACK, 1, 0); } +static void get_thread(uint64_t *stack, void *priv) +{ + struct thread *thread = target_to_thread(thread_target); + struct gdb_thread *gdb_thread = thread->gdbserver_priv; + char data[3+4+2+1]; /* 'QCp' + 4 hex digits + '.0' + NUL */ + + snprintf(data, sizeof(data), "QC%04" PRIx64, gdb_thread->pir); + + PR_INFO("get_thread pir=%llx\n", gdb_thread->pir); + + send_response(fd, data); +} + static void set_thread(uint64_t *stack, void *priv) { - send_response(fd, OK); + struct pdbg_target *target; + uint64_t pir = stack[0]; + + PR_INFO("set_thread pir=%llx\n", pir); + + for_each_path_target_class("thread", target) { + struct thread *thread = target_to_thread(target); + struct gdb_thread *gdb_thread; + + if (pdbg_target_status(target) != PDBG_TARGET_ENABLED) + continue; + + gdb_thread = thread->gdbserver_priv; + + if (gdb_thread->pir == pir) { + thread_target = target; + send_response(fd, OK); + return; + } + } + send_response(fd, ERROR(EEXIST)); } static void stop_reason(uint64_t *stack, void *priv) @@ -684,6 +717,7 @@ static command_cb callbacks[LAST_CMD + 1] = { get_spr, get_mem, stop_reason, + get_thread, set_thread, v_contc, v_conts, diff --git a/src/pdbgproxy.h b/src/pdbgproxy.h index 1910fdb..2005083 100644 --- a/src/pdbgproxy.h +++ b/src/pdbgproxy.h @@ -2,7 +2,7 @@ #define __PDBGPROXY_H enum gdb_command {NONE, GET_GPRS, GET_SPR, GET_MEM, - STOP_REASON, SET_THREAD, V_CONTC, V_CONTS, + STOP_REASON, GET_THREAD, SET_THREAD, V_CONTC, V_CONTS, PUT_MEM, INTERRUPT, DETACH, LAST_CMD}; typedef void (*command_cb)(uint64_t *stack, void *priv);

[v2,27/38] gdbserver: implement get_thread / set_thread commands

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Patch