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gdbstub: Pass CPU context to command handler

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Allow passing the current CPU context to command handlers via user_ctx
when the handler requires it.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Message-Id: <20240628050850.536447-9-gustavo.romero@linaro.org>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240705084047.857176-38-alex.bennee@linaro.org>
This commit is contained in:
Gustavo Romero 2024-07-05 09:40:44 +01:00 • committed by Alex Bennée
parent 3ce0fc57a0
commit 2be4d5db1e
2 changed files with 9 additions and 1 deletions
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7
gdbstub/gdbstub.c
View file

@ -938,6 +938,7 @@ static bool process_string_cmd(const char *data,
for (i = 0; i < num_cmds; i++) { for (i = 0; i < num_cmds; i++) {
const GdbCmdParseEntry *cmd = &cmds[i]; const GdbCmdParseEntry *cmd = &cmds[i];
void *user_ctx = NULL;
g_assert(cmd->handler && cmd->cmd); g_assert(cmd->handler && cmd->cmd);
if ((cmd->cmd_startswith && !startswith(data, cmd->cmd)) || if ((cmd->cmd_startswith && !startswith(data, cmd->cmd)) ||
@ -952,8 +953,12 @@ static bool process_string_cmd(const char *data,
} }
} }
if (cmd->need_cpu_context) {
user_ctx = (void *)gdbserver_state.g_cpu;
}
gdbserver_state.allow_stop_reply = cmd->allow_stop_reply; gdbserver_state.allow_stop_reply = cmd->allow_stop_reply;
cmd->handler(params, NULL); cmd->handler(params, user_ctx);
return true; return true;
} }

3
include/gdbstub/commands.h
View file

@ -54,6 +54,8 @@ typedef union GdbCmdVariant {
* "stop reply" packet. The list of commands that accept such response is * "stop reply" packet. The list of commands that accept such response is
* defined at the GDB Remote Serial Protocol documentation. See: * defined at the GDB Remote Serial Protocol documentation. See:
* https://sourceware.org/gdb/onlinedocs/gdb/Stop-Reply-Packets.html#Stop-Reply-Packets. * https://sourceware.org/gdb/onlinedocs/gdb/Stop-Reply-Packets.html#Stop-Reply-Packets.
*
* @need_cpu_context: Pass current CPU context to command handler via user_ctx.
*/ */
typedef struct GdbCmdParseEntry { typedef struct GdbCmdParseEntry {
GdbCmdHandler handler; GdbCmdHandler handler;
@ -61,6 +63,7 @@ typedef struct GdbCmdParseEntry {
bool cmd_startswith; bool cmd_startswith;
const char *schema; const char *schema;
bool allow_stop_reply; bool allow_stop_reply;
bool need_cpu_context;
} GdbCmdParseEntry; } GdbCmdParseEntry;
/** /**