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guix: cpu: Add support for reading armhf/aarch64 CPUs.

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* guix/cpu.scm (current-cpu): Set flags at the beginning of the loop.
Read from '/proc/cpuinfo' until the end of the file. Add match options
for discovering armhf/aarch64 cpu configurations.
This commit is contained in:
Efraim Flashner 2022-05-17 15:10:36 +03:00
parent edf86bacf2
commit 41ed6db81e
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GPG key ID: 41AAE7DCCA3D8351
1 changed files with 29 additions and 9 deletions
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38
guix/cpu.scm
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@ -62,31 +62,51 @@ (define (prefix? prefix)
(lambda (port)
(let loop ((vendor #f)
(family #f)
(model #f))
(model #f)
(flags (set)))
(match (read-line port)
((? eof-object?)
#f)
(cpu (utsname:machine (uname))
vendor family model flags))
;; vendor for x86_64 and i686
((? (prefix? "vendor_id") str)
(match (string-tokenize str)
(("vendor_id" ":" vendor)
(loop vendor family model))))
(loop vendor family model flags))))
;; vendor for aarch64 and armhf
((? (prefix? "CPU implementer") str)
(match (string-tokenize str)
(("CPU" "implementer" ":" vendor)
(loop vendor family model flags))))
;; family for x86_64 and i686
((? (prefix? "cpu family") str)
(match (string-tokenize str)
(("cpu" "family" ":" family)
(loop vendor (string->number family) model))))
(loop vendor (string->number family) model flags))))
;; model for x86_64 and i686
((? (prefix? "model") str)
(match (string-tokenize str)
(("model" ":" model)
(loop vendor family (string->number model)))
(loop vendor family (string->number model) flags))
(_
(loop vendor family model))))
(loop vendor family model flags))))
;; model for aarch64 and armhf
((? (prefix? "CPU part") str)
(match (string-tokenize str)
(("CPU" "part" ":" model)
(loop vendor family (string->number (string-drop model 2) 16) flags))))
;; flags for x86_64 and i686
((? (prefix? "flags") str)
(match (string-tokenize str)
(("flags" ":" flags ...)
(cpu (utsname:machine (uname))
vendor family model (list->set flags)))))
(loop vendor family model (list->set flags)))))
;; flags for aarch64 and armhf
((? (prefix? "Features") str)
(match (string-tokenize str)
(("Features" ":" flags ...)
(loop vendor family model (list->set flags)))))
(_
(loop vendor family model))))))))
(loop vendor family model flags))))))))
(define (cpu->gcc-architecture cpu)
"Return the architecture name, suitable for GCC's '-march' flag, that