FreeBSD/arm64 MACHINE/MACHINE_ARCH identification
Ed Maste
emaste at freebsd.org
Wed Feb 11 17:41:50 UTC 2015
The FreeBSD/arm64 work in progress currently reports "arm64" for the
machine and processor type - i.e., uname -m and uname -p.
It seems that the official, awkward name aarch64 is broadly used
elsewhere - for example, in toolchain triples and autoconf tests. To
save us grief in the future I think it is worth following suit:
diff --git a/sys/arm64/include/param.h b/sys/arm64/include/param.h
index 5cd0445..525a0e7 100644
--- a/sys/arm64/include/param.h
+++ b/sys/arm64/include/param.h
@@ -43,10 +43,10 @@
#define STACKALIGN(p) ((uint64_t)(p) & ~STACKALIGNBYTES)
#ifndef MACHINE
-#define MACHINE "arm64"
+#define MACHINE "aarch64"
#endif
#ifndef MACHINE_ARCH
-#define MACHINE_ARCH "arm64"
+#define MACHINE_ARCH "aarch64"
#endif
I'm not proposing that we rename any of the source files. I believe
this approach is consistent with the Debian project - they call it the
"arm64" port, but report aarch64 from uname.
I believe it will be much easier for us to carry around any
special-case s/aarch64/arm64/ in the base system (if necessary) than
trying to teach third-party software that the FreeBSD 64-bit ARM
architecture is called arm64 instead of aarch64.
Any objections or concerns?
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