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| author | Paul Barker <pbarker@toganlabs.com> | 2017-10-13 19:25:28 +0000 |
|---|---|---|
| committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2017-10-16 23:52:04 +0100 |
| commit | 7e96cf3c9850dc34d53af73a9ac22b1624994484 (patch) | |
| tree | ba298f764f7ee91dcdf801a587ba4b1cbaf97fa2 | |
| parent | 8cf2e5b1d9c0b5d3133dc9e341051c40d695f2a9 (diff) | |
| download | openembedded-core-7e96cf3c9850dc34d53af73a9ac22b1624994484.tar.gz openembedded-core-7e96cf3c9850dc34d53af73a9ac22b1624994484.tar.bz2 openembedded-core-7e96cf3c9850dc34d53af73a9ac22b1624994484.zip | |
goarch.bbclass: Define HOST_GO386 and TARGET_GO386
These variables are used to control the floating-point instructions emitted by
the go compiler for x86 architectures.
The default is '387' which disables the use of sse/sse2 instructions and is safe
to use on all x86 processors from the i486 onwards.
If TUNE_FEATURES contains a feature set which is known to support sse/sse2
instructions then they are set to 'sse2' to enable the use of these
instructions. This is suitable for most processors from Pentium 4 onwards.
Only the 'core2' and 'corei7' TUNE_FEATURES are defined in the oe-core layer and
are known to support ss2 instructions. Other layers may introduce additional
tunings which support sse2 instructions and for these layers, TARGET_GO386
or go_map_386 should be overridden as needed.
Signed-off-by: Paul Barker <pbarker@toganlabs.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
| -rw-r--r-- | meta/classes/goarch.bbclass | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/meta/classes/goarch.bbclass b/meta/classes/goarch.bbclass index 659b26a09e..653f035739 100644 --- a/meta/classes/goarch.bbclass +++ b/meta/classes/goarch.bbclass @@ -4,10 +4,12 @@ BUILD_GOTUPLE = "${BUILD_GOOS}_${BUILD_GOARCH}" HOST_GOOS = "${@go_map_os(d.getVar('HOST_OS'), d)}" HOST_GOARCH = "${@go_map_arch(d.getVar('HOST_ARCH'), d)}" HOST_GOARM = "${@go_map_arm(d.getVar('HOST_ARCH'), d.getVar('TUNE_FEATURES'), d)}" +HOST_GO386 = "${@go_map_386(d.getVar('HOST_ARCH'), d.getVar('TUNE_FEATURES'), d)}" HOST_GOTUPLE = "${HOST_GOOS}_${HOST_GOARCH}" TARGET_GOOS = "${@go_map_os(d.getVar('TARGET_OS'), d)}" TARGET_GOARCH = "${@go_map_arch(d.getVar('TARGET_ARCH'), d)}" TARGET_GOARM = "${@go_map_arm(d.getVar('TARGET_ARCH'), d.getVar('TUNE_FEATURES'), d)}" +TARGET_GO386 = "${@go_map_386(d.getVar('TARGET_ARCH'), d.getVar('TUNE_FEATURES'), d)}" TARGET_GOTUPLE = "${TARGET_GOOS}_${TARGET_GOARCH}" GO_BUILD_BINDIR = "${@['bin/${HOST_GOTUPLE}','bin'][d.getVar('BUILD_GOTUPLE') == d.getVar('HOST_GOTUPLE')]}" @@ -66,6 +68,15 @@ def go_map_arm(a, f, d): return '5' return '' +def go_map_386(a, f, d): + import re + if re.match('i.86', a): + if ('core2' in f) or ('corei7' in f): + return 'sse2' + else: + return '387' + return '' + def go_map_os(o, d): if o.startswith('linux'): return 'linux' |