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base: cmdIsThreadAlive implementation

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Some GDB implementations, specifically ARM's, needed this to be able to
switch between thread.

Change-Id: I0d4db0c008c336eac51008bcfefd04c375c333f7
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/63527
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
This commit is contained in:
Quentin Forcioli
2022-08-12 15:44:54 +02:00
parent e6287f7b19
commit cee2aa39b6
2 changed files with 18 additions and 1 deletions
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18
src/base/remote_gdb.cc
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@@ -971,7 +971,7 @@ std::map<char, BaseRemoteGDB::GdbCommand> BaseRemoteGDB::commandMap = {
// signal and step
{ 'S', { "KGDB_ASYNC_STEP", &BaseRemoteGDB::cmdAsyncStep } },
// find out if the thread is alive
{ 'T', { "KGDB_THREAD_ALIVE", &BaseRemoteGDB::cmdUnsupported } },
{ 'T', { "KGDB_THREAD_ALIVE", &BaseRemoteGDB::cmdIsThreadAlive } },
//multi letter command
{ 'v', { "KGDB_MULTI_LETTER", &BaseRemoteGDB::cmdMultiLetter } },
// target exited
@@ -1105,6 +1105,22 @@ BaseRemoteGDB::cmdSetThread(GdbCommand::Context &ctx)
return true;
}
bool
BaseRemoteGDB::cmdIsThreadAlive(GdbCommand::Context &ctx)
{
const char *p = ctx.data;
int tid = 0;
bool all, any;
if (!parseThreadId(&p, all, any, tid))
throw CmdError("E01");
if (all)
throw CmdError("E03");
if (threads.find(tid) == threads.end())
throw CmdError("E04");
send("OK");
return true;
}
bool
BaseRemoteGDB::cmdMemR(GdbCommand::Context &ctx)
{

1
src/base/remote_gdb.hh
View File

@@ -378,6 +378,7 @@ class BaseRemoteGDB
bool cmdRegR(GdbCommand::Context &ctx);
bool cmdRegW(GdbCommand::Context &ctx);
bool cmdSetThread(GdbCommand::Context &ctx);
bool cmdIsThreadAlive(GdbCommand::Context &ctx);
bool cmdMemR(GdbCommand::Context &ctx);
bool cmdMemW(GdbCommand::Context &ctx);
bool cmdQueryVar(GdbCommand::Context &ctx);