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Re: [PATCH] target/xtensa: don't generate extra EXCP_DEBUG on exception

From: Richard Henderson
Subject: Re: [PATCH] target/xtensa: don't generate extra EXCP_DEBUG on exception
Date: Thu, 15 Apr 2021 15:29:53 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1

On 4/15/21 1:55 PM, Max Filippov wrote:
target/xtensa used to generate an extra EXCP_DEBUG exception before the
first instruction executed after an interrupt or an exception is taken
to allow single-stepping that instruction in the debugger.
This is no longer needed after the following commits:
a7ba744f4082 ("tcg/cpu-exec: precise single-stepping after an exception")
ba3c35d9c402 ("tcg/cpu-exec: precise single-stepping after an interrupt")
Drop exception state tracking/extra EXCP_DEBUG generation code.

Signed-off-by: Max Filippov<jcmvbkbc@gmail.com>
This patch depends on the "target/xtensa: Make sure that tb->size != 0"

  target/xtensa/cpu.c        | 1 -
  target/xtensa/cpu.h        | 7 -------
  target/xtensa/exc_helper.c | 5 -----
  target/xtensa/translate.c  | 6 ------
  4 files changed, 19 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


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