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gdb: use two displaced step buffers on amd64-linux
author
Simon Marchi
<simon.marchi@efficios.com>
Mon, 16 Mar 2020 21:36:09 +0000
(17:36 -0400)
committer
Simon Marchi
<simon.marchi@efficios.com>
Wed, 8 Jul 2020 18:19:09 +0000
(14:19 -0400)
At least as observed with gcc 9, there is enough space at _start to have
two displaced stepping buffers of 16 bytes.
An alternative way is to call mmap in the inferior to allocate one or
more executable pages. However, this is more intrusive.
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