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accel/tcg: Handle gdb singlestep in cpu_tb_exec

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Currently the change in cpu_tb_exec is masked by the debug exception
being raised by the translators.  But this allows us to remove that code.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-07-18 15:12:12 -10:00
parent 6587b0c133
commit c9460d75c5
1 changed files with 11 additions and 0 deletions
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11
accel/tcg/cpu-exec.c
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@ -383,6 +383,17 @@ cpu_tb_exec(CPUState *cpu, TranslationBlock *itb, int *tb_exit)
cc->set_pc(cpu, last_tb->pc); cc->set_pc(cpu, last_tb->pc);
} }
} }
/*
* If gdb single-step, and we haven't raised another exception,
* raise a debug exception. Single-step with another exception
* is handled in cpu_handle_exception.
*/
if (unlikely(cpu->singlestep_enabled) && cpu->exception_index == -1) {
cpu->exception_index = EXCP_DEBUG;
cpu_loop_exit(cpu);
}
return last_tb; return last_tb;
} }