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gdbstub: move sstep flags probing into AccelClass

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The support of single-stepping is very much dependent on support from
the accelerator we are using. To avoid special casing in gdbstub move
the probing out to an AccelClass function so future accelerators can
put their code there.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Mads Ynddal <mads@ynddal.dk>
Message-Id: <20220929114231.583801-44-alex.bennee@linaro.org>
This commit is contained in:
Alex Bennée 2022-09-29 12:42:23 +01:00
parent 842b42df2b
commit 3b7a93880a
6 changed files with 56 additions and 27 deletions
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22
gdbstub/gdbstub.c
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@ -383,27 +383,13 @@ static void init_gdbserver_state(void)
gdbserver_state.last_packet = g_byte_array_sized_new(MAX_PACKET_LENGTH + 4);
/*
* In replay mode all events will come from the log and can't be
* suppressed otherwise we would break determinism. However as those
* events are tied to the number of executed instructions we won't see
* them occurring every time we single step.
*/
if (replay_mode != REPLAY_MODE_NONE) {
gdbserver_state.supported_sstep_flags = SSTEP_ENABLE;
} else if (kvm_enabled()) {
gdbserver_state.supported_sstep_flags = kvm_get_supported_sstep_flags();
} else {
gdbserver_state.supported_sstep_flags =
SSTEP_ENABLE | SSTEP_NOIRQ | SSTEP_NOTIMER;
}
/*
* By default use no IRQs and no timers while single stepping so as to
* make single stepping like an ICE HW step.
* What single-step modes are supported is accelerator dependent.
* By default try to use no IRQs and no timers while single
* stepping so as to make single stepping like a typical ICE HW step.
*/
gdbserver_state.supported_sstep_flags = accel_supported_gdbstub_sstep_flags();
gdbserver_state.sstep_flags = SSTEP_ENABLE | SSTEP_NOIRQ | SSTEP_NOTIMER;
gdbserver_state.sstep_flags &= gdbserver_state.supported_sstep_flags;
}
#ifndef CONFIG_USER_ONLY