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Date: Thu, 25 Jan 2024 12:43:54 -0500
From: Rich Felker <dalias@...c.org>
To: musl@...ts.openwall.com
Subject: loongarch64 merge
I'm going through where everything was left on this topic and
preparing a patch for merge. This message/thread is to document what
I'm actually doing vs the various submitted versions of the patch
since v5/v6 where the major review took place.
Subsequent changes I'm reverting:
- De-optimization of __get_tp. No motivation for removing the
potentially in-place $tp was provided, and we generally use the
arch's tp in-place unless there's a compiler bug to be worked
around. See powerpc{,64} for an example where it's used, or1k where
we have a probably-obsolete workaround for ancient clang being
broken.
- unsigned -> unsigned int, etc.
- Gratuitous whitespace changes in headers that obscure the fact that
a header is a complete duplicate that could eventually be shared
between archs (e.g. bits/float.h, bits/posix.h) or just obscure
what differs from other archs when running diff.
Fixes from previous review that were overlooked:
- Removing SA_RESTORER -- its presence defined as 0 produces wrong
sigaction ABI.
Additions:
- Adding the reloc.h/configure case for single-only float.
- The new member names for mcontext_t are all in reserved namespace,
so there's no reason to have a separate namespace-clean version of
mcontext_t, and I'm removing the latter.
- Public member uc_flags with no __, macro for compat with any
existing software using the __-prefixed name.
Still TODO:
I don't think I ever reviewed the apparent rewrite of sigsetjmp and
possibly some other asm that changed between v5 and v8. I'm about to
start looking at that and will follow up.
Attached are a "differences vs v8" patch and what my cumulative patch
looks like right now.
Rich
View attachment "proposed_vs_v8.diff" of type "text/plain" (8206 bytes)
View attachment "proposed_cumulative.diff" of type "text/plain" (41274 bytes)
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