[PATCH] cmd/go, cmd/cgo: pass -mfp32 and -mhard/soft-float to MIPS GCC
For mips32 currently, we are using FP32, while the gcc may be FPXX,
which may generate .MIPS.abiflags and .gnu.attributes section with
value as FPXX. So the kernel will treat the exe as FPXX, and may
choose to use FR=1 FPU mode for it.
Currently, in Go, we use 2 lwc1 to load both half of a double value
to a pair of even-odd FPR. This behavior can only work with FR=0 mode.
In FR=1 mode, all of 32 FPR are 64bit. If we lwc1 the high-half of a double
value to an odd FPR, and try to use the previous even FPR to compute, the
real high-half of even FPR will be unpredicatable.
We set -mfp32 to force the gcc generate FP32 code and section value.
More details about FP32/FPXX/FP64 are explained in:
https://web.archive.org/web/
20180828210612/https://dmz-portal.mips.com/wiki/MIPS_O32_ABI_-_FR0_and_FR1_Interlinking
When GOMIPS/GOMIPS64 is set as softfloat, we should also pass
-msoft-float to gcc.
Here we also add -mno-odd-spreg option, since Loongson's CPU cannot use
odd-number FR in FR=0 mode.
Fixes #39435
Change-Id: I54026ad416a815fe43a9261ebf6d02e5519c3930
Gbp-Pq: Name 0004-Mips32-cgo-use-mfp32-option.patch
Fix FTBFS on $HOME managed with git.
This is a cherry-pick of
https://github.com/golang/go/commit/
e2a9ea035d73df84c813132417366e8e01777c8d
cmd/go/internal/modload: suppress the 'go mod init' hint for GOROOT more aggressively
Previously, we suppressed a `to create a module there, run: … go mod
init' warning only if the config file itself (such as .git/config) was
found in GOROOT. However, our release tarballs don't include the
.git/config, so that case was not encountered, and the warning could
occur based on a config file found in some parent directory (outside
of GOROOT entirely).
Instead, skip the directory walk completely if the working directory
is anywhere in GOROOT.
Fixes #34191
Change-Id: I9f774901bfbb53b700407c4882f37d6339d023fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/223340
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Gbp-Pq: Name 0003-Fix-FTBFS-on-HOME-managed-with-git.patch
Disable test for UserHomeDir.
On Debian buildds, the user home dir does not exist, so this test fails.
Gbp-Pq: Name 0001-Disable-test-for-UserHomeDir.patch
projects / golang-1.14.git / log