[Pdbg] [PATCH v2 14/39] gdbserver: lexer fixes
Joel Stanley
joel at jms.id.au
Tue May 3 17:03:18 AEST 2022
On Wed, 20 Apr 2022 at 06:51, Nicholas Piggin <npiggin at gmail.com> wrote:
>
> The lexer is coded in a funny way that ignores all packets that don't
> match a command or interrupt to start with, and then expects a command
> or ack/nack following an interrupt. This results in leading ack/nack not
> being matched as such which is fine because they're ignored but makes
> things confusing. But it also results in command errors for the command
> following an interrupt.
>
> All this complexity and problems seems to have arisen because the
> trailing NUL termination is passed in to the buffer which has made
> everything more complicated.
>
> Fix this by not passing in the trailing NUL, and rewriting the lexer
> so it always matches one of a command, interrupt, ack, or nack at
> the high level. Command / crc reset is done at entry to the command
> state.
>
> Some additional checks and debugging messages are added.
>
> Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
Reviewed-by: Joel Stanley <joel at jms.id.au>
> ---
> src/gdb_parser.rl | 56 +++++--
> src/gdb_parser_precompile.c | 314 +++++++++++++++++++-----------------
> 2 files changed, 209 insertions(+), 161 deletions(-)
>
> diff --git a/src/gdb_parser.rl b/src/gdb_parser.rl
> index 629a091c..72a907cf 100644
> --- a/src/gdb_parser.rl
> +++ b/src/gdb_parser.rl
> @@ -1,9 +1,11 @@
> -#include <stdio.h>
> +#include <stdbool.h>
> #include <stdint.h>
> +#include <stdio.h>
> #include <string.h>
> #include <assert.h>
>
> #include "src/pdbgproxy.h"
> +#include "debug.h"
>
> %%{
> machine gdb;
> @@ -14,6 +16,7 @@
> data = stack;
> memset(stack, 0, sizeof(stack));
> crc = 0;
> + PR_INFO("RAGEL: CRC reset\n");
> }
>
> action crc {
> @@ -39,10 +42,10 @@
> action end {
> /* *data should point to the CRC */
> if (crc != *data) {
> - printf("CRC error\n");
> + printf("CRC error cmd %d\n", cmd);
> send_nack(priv);
> } else {
> - printf("Cmd %d\n", cmd);
> + PR_INFO("Cmd %d\n", cmd);
> send_ack(priv);
>
> /* Push the response onto the stack */
> @@ -51,7 +54,8 @@
> else
> *data = 0;
>
> - command_callbacks[cmd](stack, priv);
> + if (command_callbacks)
> + command_callbacks[cmd](stack, priv);
> }
> }
>
> @@ -82,28 +86,29 @@
> # TODO: We don't actually listen to what's supported
> q_attached = ('qAttached:' xdigit* @{rsp = "1";});
> q_C = ('qC' @{rsp = "QC1";});
> - q_supported = ('qSupported:' any* @{rsp = "multiprocess+;vContSupported+";});
> + q_supported = ('qSupported:' any* >{rsp = "multiprocess+;vContSupported+";});
> qf_threadinfo = ('qfThreadInfo' @{rsp = "m1l";});
>
> # vCont packet parsing
> v_contq = ('vCont?' @{rsp = "vCont;c;C;s;S";});
> v_contc = ('vCont;c' any* @{cmd = V_CONTC;});
> v_conts = ('vCont;s' any* @{cmd = V_CONTS;});
> + unknown = (any*);
>
> - interrupt = (3 @{command_callbacks[INTERRUPT](stack, priv);});
> + 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 |
> q_attached | q_C | q_supported | qf_threadinfo | q_C |
> - v_contq | v_contc | v_conts | put_mem | detach );
> + v_contq | v_contc | v_conts | put_mem | detach | unknown );
>
> - cmd = ((commands & ^'#'*) | ^'#'*) $crc
> - ('#' xdigit{2} $hex_digit @end);
> + cmd = (('$' ((commands & ^'#'*) >reset $crc)
> + ('#' xdigit{2} $hex_digit @end)) >{PR_INFO("RAGEL:cmd\n");});
>
> # We ignore ACK/NACK for the moment
> - ack = ('+');
> - nack = ('-');
> + ack = ('+' >{PR_INFO("RAGEL:ack\n");});
> + nack = ('-' >{PR_INFO("RAGEL:nack\n");});
>
> - main := (( ^('$' | interrupt)*('$' | interrupt) @reset) (cmd | ack | nack))*;
> + main := (cmd | interrupt | ack | nack)*;
>
> }%%
>
> @@ -113,7 +118,7 @@ static char *rsp;
> static uint8_t crc;
> static int cs;
>
> -command_cb *command_callbacks;
> +static command_cb *command_callbacks;
>
> %%write data;
>
> @@ -127,20 +132,39 @@ void parser_init(command_cb *callbacks)
> int parse_buffer(char *buf, size_t len, void *priv)
> {
> char *p = buf;
> - char *pe = p + len + 1;
> + char *pe = p + len;
>
> %%write exec;
>
> + if (cs == gdb_error) {
> + printf("parse error\n");
> + return -1;
> + }
> +
> return 0;
> }
>
> #if 0
> +void send_nack(void *priv)
> +{
> + printf("Send: -\n");
> +}
> +
> +void send_ack(void *priv)
> +{
> + printf("Send: +\n");
> +}
> +
> int main(int argc, char **argv)
> {
> parser_init(NULL);
>
> - if (argc > 1)
> - parse_buffer(argv[1], strlen(argv[1]), NULL);
> + if (argc > 1) {
> + int i;
> + for (i = 1; i < argc; i++)
> + parse_buffer(argv[i], strlen(argv[i]), NULL);
> + }
> +
> return 0;
> }
> #endif
> diff --git a/src/gdb_parser_precompile.c b/src/gdb_parser_precompile.c
> index 734b0f8b..d5372913 100644
> --- a/src/gdb_parser_precompile.c
> +++ b/src/gdb_parser_precompile.c
> @@ -1,14 +1,16 @@
>
> #line 1 "src/gdb_parser.rl"
> -#include <stdio.h>
> +#include <stdbool.h>
> #include <stdint.h>
> +#include <stdio.h>
> #include <string.h>
> #include <assert.h>
>
> #include "src/pdbgproxy.h"
> +#include "debug.h"
>
>
> -#line 108 "src/gdb_parser.rl"
> +#line 113 "src/gdb_parser.rl"
>
>
> static enum gdb_command cmd = NONE;
> @@ -17,168 +19,157 @@ static char *rsp;
> static uint8_t crc;
> static int cs;
>
> -command_cb *command_callbacks;
> +static command_cb *command_callbacks;
>
>
> -#line 24 "src/gdb_parser_precompile.c"
> +#line 26 "src/gdb_parser_precompile.c"
> static const char _gdb_actions[] = {
> 0, 1, 0, 1, 1, 1, 2, 1,
> - 3, 2, 1, 0, 2, 2, 1, 2,
> - 3, 1, 2, 3, 4, 2, 5, 1,
> - 2, 6, 1, 2, 7, 1, 2, 8,
> - 1, 2, 9, 1, 2, 10, 1, 2,
> - 11, 1, 2, 12, 1, 2, 13, 1,
> + 3, 1, 14, 1, 19, 1, 20, 1,
> + 21, 1, 22, 2, 0, 1, 2, 2,
> + 1, 2, 3, 1, 2, 3, 4, 2,
> + 10, 1, 2, 12, 1, 2, 13, 1,
> 2, 14, 1, 2, 15, 1, 2, 16,
> - 1, 2, 17, 1, 2, 18, 1, 2,
> - 19, 0, 3, 1, 19, 0
> + 1, 2, 17, 1, 2, 18, 1, 3,
> + 0, 5, 1, 3, 0, 6, 1, 3,
> + 0, 7, 1, 3, 0, 8, 1, 3,
> + 0, 9, 1, 3, 0, 11, 1
> };
>
> static const unsigned char _gdb_key_offsets[] = {
> - 0, 0, 2, 14, 15, 21, 27, 30,
> - 38, 46, 53, 60, 61, 68, 76, 83,
> - 91, 98, 106, 111, 113, 115, 117, 119,
> - 121, 123, 125, 127, 134, 136, 138, 140,
> - 142, 144, 146, 148, 150, 152, 153, 155,
> - 157, 159, 161, 163, 165, 167, 169, 171,
> - 173, 175, 177, 179, 181, 184, 187, 188,
> - 189, 191
> + 0, 0, 10, 11, 17, 23, 30, 37,
> + 38, 45, 53, 60, 68, 75, 83, 88,
> + 90, 92, 94, 96, 98, 100, 102, 104,
> + 111, 113, 115, 117, 119, 121, 123, 125,
> + 127, 129, 130, 132, 134, 136, 138, 140,
> + 142, 144, 146, 148, 150, 152, 154, 156,
> + 158, 161, 164, 165, 166
> };
>
> static const char _gdb_trans_keys[] = {
> - 3, 36, 35, 43, 45, 63, 68, 72,
> - 77, 103, 109, 112, 113, 118, 35, 48,
> - 57, 65, 70, 97, 102, 48, 57, 65,
> - 70, 97, 102, 3, 35, 36, 3, 36,
> - 48, 57, 65, 70, 97, 102, 3, 36,
> + 35, 63, 68, 72, 77, 103, 109, 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, 35, 48, 57,
> - 65, 70, 97, 102, 35, 44, 48, 57,
> + 65, 70, 97, 102, 35, 58, 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, 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, 3,
> - 35, 36, 0
> + 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, 2, 12, 1, 0, 0, 3, 2,
> - 2, 1, 1, 1, 1, 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,
> + 0, 10, 1, 0, 0, 1, 1, 1,
> + 1, 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, 2, 2, 2, 2,
> - 2, 2, 2, 2, 3, 3, 1, 1,
> - 2, 3
> + 3, 3, 1, 1, 4
> };
>
> static const char _gdb_range_lengths[] = {
> - 0, 0, 0, 0, 3, 3, 0, 3,
> - 3, 3, 3, 0, 3, 3, 3, 3,
> - 3, 3, 0, 0, 0, 0, 0, 0,
> - 0, 0, 0, 3, 0, 0, 0, 0,
> + 0, 0, 0, 3, 3, 3, 3, 0,
> + 3, 3, 3, 3, 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
> };
>
> -static const short _gdb_index_offsets[] = {
> - 0, 0, 3, 16, 18, 22, 26, 30,
> - 36, 42, 47, 52, 54, 59, 65, 70,
> - 76, 81, 87, 93, 96, 99, 102, 105,
> - 108, 111, 114, 117, 122, 125, 128, 131,
> - 134, 137, 140, 143, 146, 149, 151, 154,
> - 157, 160, 163, 166, 169, 172, 175, 178,
> - 181, 184, 187, 190, 193, 197, 201, 203,
> - 205, 208
> +static const unsigned char _gdb_index_offsets[] = {
> + 0, 0, 11, 13, 17, 21, 26, 31,
> + 33, 38, 44, 49, 55, 60, 66, 72,
> + 75, 78, 81, 84, 87, 90, 93, 96,
> + 101, 104, 107, 110, 113, 116, 119, 122,
> + 125, 128, 130, 133, 136, 139, 142, 145,
> + 148, 151, 154, 157, 160, 163, 166, 169,
> + 172, 176, 180, 182, 184
> };
>
> static const char _gdb_indicies[] = {
> - 1, 2, 0, 4, 5, 5, 6, 7,
> - 8, 9, 10, 11, 12, 13, 14, 3,
> - 4, 3, 15, 15, 15, 16, 17, 17,
> - 17, 16, 19, 20, 21, 18, 1, 2,
> - 22, 22, 22, 0, 1, 2, 17, 17,
> - 17, 0, 4, 23, 23, 23, 3, 24,
> - 23, 23, 23, 3, 4, 25, 4, 26,
> - 26, 26, 3, 4, 27, 26, 26, 26,
> - 3, 4, 28, 28, 28, 3, 4, 29,
> - 28, 28, 28, 3, 4, 30, 30, 30,
> - 3, 4, 29, 30, 30, 30, 3, 4,
> - 31, 32, 33, 34, 3, 4, 35, 3,
> - 4, 36, 3, 4, 37, 3, 4, 38,
> - 3, 4, 39, 3, 4, 40, 3, 4,
> - 41, 3, 4, 42, 3, 4, 43, 43,
> - 43, 3, 4, 44, 3, 4, 45, 3,
> - 4, 46, 3, 4, 47, 3, 4, 48,
> - 3, 4, 49, 3, 4, 50, 3, 4,
> - 51, 3, 4, 52, 3, 4, 53, 4,
> - 54, 3, 4, 55, 3, 4, 56, 3,
> - 4, 57, 3, 4, 58, 3, 4, 59,
> - 3, 4, 60, 3, 4, 61, 3, 4,
> - 62, 3, 4, 63, 3, 4, 64, 3,
> - 4, 65, 3, 4, 66, 3, 4, 67,
> - 3, 4, 68, 69, 3, 4, 70, 71,
> - 3, 4, 72, 4, 73, 1, 2, 0,
> - 19, 20, 21, 18, 0
> + 1, 2, 3, 4, 5, 6, 7, 8,
> + 9, 10, 0, 12, 11, 13, 13, 13,
> + 14, 15, 15, 15, 14, 12, 16, 16,
> + 16, 11, 17, 16, 16, 16, 11, 12,
> + 18, 12, 19, 19, 19, 11, 12, 20,
> + 19, 19, 19, 11, 12, 21, 21, 21,
> + 11, 12, 22, 21, 21, 21, 11, 12,
> + 23, 23, 23, 11, 12, 22, 23, 23,
> + 23, 11, 12, 24, 25, 26, 27, 11,
> + 12, 28, 11, 12, 29, 11, 12, 30,
> + 11, 12, 31, 11, 12, 32, 11, 12,
> + 33, 11, 12, 34, 11, 12, 35, 11,
> + 12, 36, 36, 36, 11, 12, 37, 11,
> + 12, 38, 11, 12, 39, 11, 12, 40,
> + 11, 12, 41, 11, 12, 42, 11, 12,
> + 43, 11, 12, 44, 11, 12, 45, 11,
> + 47, 46, 12, 48, 11, 12, 49, 11,
> + 12, 50, 11, 12, 51, 11, 12, 52,
> + 11, 12, 53, 11, 12, 54, 11, 12,
> + 55, 11, 12, 56, 11, 12, 57, 11,
> + 12, 58, 11, 12, 59, 11, 12, 60,
> + 11, 12, 61, 11, 12, 62, 63, 11,
> + 12, 64, 65, 11, 12, 66, 12, 67,
> + 68, 69, 70, 71, 14, 0
> };
>
> static const char _gdb_trans_targs[] = {
> - 1, 2, 2, 3, 4, 57, 3, 9,
> - 11, 12, 3, 16, 9, 18, 48, 5,
> - 0, 56, 6, 2, 7, 2, 8, 10,
> - 4, 11, 13, 14, 15, 9, 17, 19,
> - 3, 28, 38, 20, 21, 22, 23, 24,
> - 25, 26, 27, 27, 29, 30, 31, 32,
> - 33, 34, 35, 36, 37, 37, 39, 40,
> - 41, 42, 43, 44, 45, 46, 47, 3,
> - 49, 50, 51, 52, 53, 3, 54, 55,
> - 54, 55
> + 2, 3, 2, 5, 7, 8, 2, 12,
> + 5, 14, 44, 2, 3, 4, 0, 52,
> + 6, 3, 7, 9, 10, 11, 5, 13,
> + 15, 2, 24, 34, 16, 17, 18, 19,
> + 20, 21, 22, 23, 23, 25, 26, 27,
> + 28, 29, 30, 31, 32, 33, 2, 3,
> + 35, 36, 37, 38, 39, 40, 41, 42,
> + 43, 2, 45, 46, 47, 48, 49, 2,
> + 50, 51, 50, 51, 52, 1, 52, 52
> };
>
> static const char _gdb_trans_actions[] = {
> - 0, 63, 1, 3, 0, 3, 33, 39,
> - 3, 24, 27, 21, 30, 3, 3, 7,
> - 0, 18, 3, 66, 0, 9, 7, 15,
> - 5, 36, 15, 12, 15, 12, 15, 3,
> - 45, 3, 3, 3, 3, 3, 3, 3,
> - 3, 3, 3, 42, 3, 3, 3, 3,
> - 3, 3, 3, 3, 3, 48, 3, 3,
> - 3, 3, 3, 3, 3, 3, 3, 51,
> - 3, 3, 3, 3, 3, 54, 3, 3,
> - 57, 60
> + 19, 1, 71, 75, 19, 59, 63, 55,
> + 67, 19, 19, 3, 0, 7, 0, 28,
> + 25, 5, 31, 25, 22, 25, 22, 25,
> + 3, 37, 3, 3, 3, 3, 3, 3,
> + 3, 3, 3, 3, 34, 3, 3, 3,
> + 3, 3, 3, 3, 3, 3, 40, 9,
> + 3, 3, 3, 3, 3, 3, 3, 3,
> + 3, 43, 3, 3, 3, 3, 3, 46,
> + 3, 3, 49, 52, 11, 13, 15, 17
> };
>
> -static const int gdb_start = 56;
> -static const int gdb_first_final = 56;
> +static const int gdb_start = 52;
> +static const int gdb_first_final = 52;
> static const int gdb_error = 0;
>
> -static const int gdb_en_main = 56;
> +static const int gdb_en_main = 52;
>
>
> -#line 119 "src/gdb_parser.rl"
> +#line 124 "src/gdb_parser.rl"
>
> void parser_init(command_cb *callbacks)
> {
>
> -#line 177 "src/gdb_parser_precompile.c"
> +#line 168 "src/gdb_parser_precompile.c"
> {
> cs = gdb_start;
> }
>
> -#line 123 "src/gdb_parser.rl"
> +#line 128 "src/gdb_parser.rl"
>
> command_callbacks = callbacks;
> }
> @@ -186,10 +177,10 @@ void parser_init(command_cb *callbacks)
> int parse_buffer(char *buf, size_t len, void *priv)
> {
> char *p = buf;
> - char *pe = p + len + 1;
> + char *pe = p + len;
>
>
> -#line 193 "src/gdb_parser_precompile.c"
> +#line 184 "src/gdb_parser_precompile.c"
> {
> int _klen;
> unsigned int _trans;
> @@ -264,30 +255,31 @@ _match:
> switch ( *_acts++ )
> {
> case 0:
> -#line 11 "src/gdb_parser.rl"
> +#line 13 "src/gdb_parser.rl"
> {
> cmd = 0;
> rsp = NULL;
> data = stack;
> memset(stack, 0, sizeof(stack));
> crc = 0;
> + PR_INFO("RAGEL: CRC reset\n");
> }
> break;
> case 1:
> -#line 19 "src/gdb_parser.rl"
> +#line 22 "src/gdb_parser.rl"
> {
> crc += *p;
> }
> break;
> case 2:
> -#line 23 "src/gdb_parser.rl"
> +#line 26 "src/gdb_parser.rl"
> {
> data++;
> assert(data < &stack[10]);
> }
> break;
> case 3:
> -#line 28 "src/gdb_parser.rl"
> +#line 31 "src/gdb_parser.rl"
> {
> *data *= 16;
>
> @@ -300,14 +292,14 @@ _match:
> }
> break;
> case 4:
> -#line 39 "src/gdb_parser.rl"
> +#line 42 "src/gdb_parser.rl"
> {
> /* *data should point to the CRC */
> if (crc != *data) {
> - printf("CRC error\n");
> + printf("CRC error cmd %d\n", cmd);
> send_nack(priv);
> } else {
> - printf("Cmd %d\n", cmd);
> + PR_INFO("Cmd %d\n", cmd);
> send_ack(priv);
>
> /* Push the response onto the stack */
> @@ -316,71 +308,84 @@ _match:
> else
> *data = 0;
>
> - command_callbacks[cmd](stack, priv);
> + if (command_callbacks)
> + command_callbacks[cmd](stack, priv);
> }
> }
> break;
> case 5:
> -#line 58 "src/gdb_parser.rl"
> +#line 62 "src/gdb_parser.rl"
> {cmd = GET_MEM;}
> break;
> case 6:
> -#line 63 "src/gdb_parser.rl"
> +#line 67 "src/gdb_parser.rl"
> {cmd = PUT_MEM;}
> break;
> case 7:
> -#line 70 "src/gdb_parser.rl"
> +#line 74 "src/gdb_parser.rl"
> {cmd = GET_GPRS;}
> break;
> case 8:
> -#line 72 "src/gdb_parser.rl"
> +#line 76 "src/gdb_parser.rl"
> {cmd = GET_SPR;}
> break;
> case 9:
> -#line 75 "src/gdb_parser.rl"
> +#line 79 "src/gdb_parser.rl"
> {cmd = STOP_REASON;}
> break;
> case 10:
> -#line 77 "src/gdb_parser.rl"
> +#line 81 "src/gdb_parser.rl"
> {cmd = SET_THREAD;}
> break;
> case 11:
> -#line 79 "src/gdb_parser.rl"
> +#line 83 "src/gdb_parser.rl"
> {cmd = DETACH;}
> break;
> case 12:
> -#line 83 "src/gdb_parser.rl"
> +#line 87 "src/gdb_parser.rl"
> {rsp = "1";}
> break;
> case 13:
> -#line 84 "src/gdb_parser.rl"
> +#line 88 "src/gdb_parser.rl"
> {rsp = "QC1";}
> break;
> case 14:
> -#line 85 "src/gdb_parser.rl"
> +#line 89 "src/gdb_parser.rl"
> {rsp = "multiprocess+;vContSupported+";}
> break;
> case 15:
> -#line 86 "src/gdb_parser.rl"
> +#line 90 "src/gdb_parser.rl"
> {rsp = "m1l";}
> break;
> case 16:
> -#line 89 "src/gdb_parser.rl"
> +#line 93 "src/gdb_parser.rl"
> {rsp = "vCont;c;C;s;S";}
> break;
> case 17:
> -#line 90 "src/gdb_parser.rl"
> +#line 94 "src/gdb_parser.rl"
> {cmd = V_CONTC;}
> break;
> case 18:
> -#line 91 "src/gdb_parser.rl"
> +#line 95 "src/gdb_parser.rl"
> {cmd = V_CONTS;}
> break;
> case 19:
> -#line 93 "src/gdb_parser.rl"
> - {command_callbacks[INTERRUPT](stack, priv);}
> +#line 98 "src/gdb_parser.rl"
> + { if (command_callbacks) command_callbacks[INTERRUPT](stack, priv); PR_INFO("RAGEL:interrupt\n");}
> break;
> -#line 384 "src/gdb_parser_precompile.c"
> + case 20:
> +#line 105 "src/gdb_parser.rl"
> + {PR_INFO("RAGEL:cmd\n");}
> + break;
> + case 21:
> +#line 108 "src/gdb_parser.rl"
> + {PR_INFO("RAGEL:ack\n");}
> + break;
> + case 22:
> +#line 109 "src/gdb_parser.rl"
> + {PR_INFO("RAGEL:nack\n");}
> + break;
> +#line 389 "src/gdb_parser_precompile.c"
> }
> }
>
> @@ -393,18 +398,37 @@ _again:
> _out: {}
> }
>
> -#line 133 "src/gdb_parser.rl"
> +#line 138 "src/gdb_parser.rl"
> +
> + if (cs == gdb_error) {
> + printf("parse error\n");
> + return -1;
> + }
>
> return 0;
> }
>
> #if 0
> +void send_nack(void *priv)
> +{
> + printf("Send: -\n");
> +}
> +
> +void send_ack(void *priv)
> +{
> + printf("Send: +\n");
> +}
> +
> int main(int argc, char **argv)
> {
> parser_init(NULL);
>
> - if (argc > 1)
> - parse_buffer(argv[1], strlen(argv[1]), NULL);
> + if (argc > 1) {
> + int i;
> + for (i = 1; i < argc; i++)
> + parse_buffer(argv[i], strlen(argv[i]), NULL);
> + }
> +
> return 0;
> }
> #endif
> --
> 2.35.1
>
> --
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