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accel/tcg: Add CF_NO_GOTO_TB and CF_NO_GOTO_PTR

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Move the -d nochain check to bits on tb->cflags.
These will be used for more than -d nochain shortly.

Set bits during curr_cflags, test them in translator_use_goto_tb,
assert we're not doing anything odd in tcg_gen_goto_tb.  The test
in tcg_gen_exit_tb is redundant with the assert for goto_tb_issue_mask.

Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210717221851.2124573-4-richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-07-17 15:18:41 -07:00
parent 288a5fe980
commit 84f1561629
4 changed files with 33 additions and 24 deletions
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8
accel/tcg/cpu-exec.c
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@ -147,7 +147,13 @@ static void init_delay_params(SyncClocks *sc, const CPUState *cpu)
uint32_t curr_cflags(CPUState *cpu)
{
return cpu->tcg_cflags;
uint32_t cflags = cpu->tcg_cflags;
if (qemu_loglevel_mask(CPU_LOG_TB_NOCHAIN)) {
cflags |= CF_NO_GOTO_TB | CF_NO_GOTO_PTR;
}
return cflags;
}
/* Might cause an exception, so have a longjmp destination ready */