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target/loongarch: Fix GDB get the wrong pc

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GDB LoongArch add a register orig_a0, see the base64.xml [1].
We should add the orig_a0 to match the upstream GDB.

[1]: https://github.com/bminor/binutils-gdb/blob/master/gdb/features/loongarch/base64.xml

Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220805033523.1416837-2-gaosong@loongson.cn>
This commit is contained in:
Song Gao 2022-08-05 11:35:19 +08:00 • committed by Richard Henderson
parent 4cbadc40b9
commit 1fe8ac3511
3 changed files with 7 additions and 3 deletions
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1
gdb-xml/loongarch-base64.xml
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@ -39,6 +39,7 @@
<reg name="r29" bitsize="64" type="uint64" group="general"/>
<reg name="r30" bitsize="64" type="uint64" group="general"/>
<reg name="r31" bitsize="64" type="uint64" group="general"/>
<reg name="orig_a0" bitsize="64" type="uint64" group="general"/>
<reg name="pc" bitsize="64" type="code_ptr" group="general"/>
<reg name="badvaddr" bitsize="64" type="code_ptr" group="general"/>
</feature>