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WANG Xuerui 71f82df19a cmd/link/internal/loong64: use BREAK 0 as the code pad sequence
As the comment on CodePad goes, we "might want to pad with a trap
instruction to catch wayward programs". The current behavior of
zero-padding is equivalent to padding with an instruction of 0x00000000,
which is invalid according to the LoongArch manuals nevertheless, but
rumor has it that some early and/or engineering samples of Loongson
3A5000 recognized it (maybe behaving like NOP). It is better to avoid
undocumented behavior and ensure execution flow would not overflow the
pads.

Change-Id: I531b1eabeb355e9ad4a2d5340e61f2fe71349297
Reviewed-on: https://go-review.googlesource.com/c/go/+/475616
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2023-03-15 07:19:39 +00:00
.github .github: suggest using private browsing in pkgsite template 2023-01-03 18:52:47 +00:00
api testing: add Testing function 2023-03-13 21:58:46 +00:00
doc doc: start draft Go 1.21 release notes 2023-02-22 18:53:00 +00:00
lib/time time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
misc runtime/cgo: add tsan sync for traceback function 2023-03-08 20:11:59 +00:00
src cmd/link/internal/loong64: use BREAK 0 as the code pad sequence 2023-03-15 07:19:39 +00:00
test cmd/compile: instrinsify TrailingZeros{8,32,64} for 386 2023-03-14 08:10:32 +00:00
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.gitignore time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
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go.env cmd/go: introduce GOROOT/go.env and move proxy/sumdb config there 2023-01-17 23:10:39 +00:00
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The Go Programming Language

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