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Implement zephyr urandom and monotime (#19142)

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* implement urandom for Zephyr

* add monotime on zephyr

Co-authored-by: Jaremy Creechley <jaremy.creechley@panthalassa.com>
This commit is contained in:
Jaremy Creechley 2021-11-14 03:49:30 -08:00 • committed by GitHub
commit 6976d18519
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2 changed files with 18 additions and 1 deletions
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7
lib/std/monotimes.nim
View file

@ -76,6 +76,10 @@ when defined(js):
elif defined(posix) and not defined(osx): elif defined(posix) and not defined(osx):
import posix import posix
when defined(zephyr):
proc k_uptime_ticks(): int64 {.importc: "k_uptime_ticks", header: "<kernel.h>".}
proc k_ticks_to_ns_floor64(ticks: int64): int64 {.importc: "k_ticks_to_ns_floor64", header: "<kernel.h>".}
elif defined(windows): elif defined(windows):
proc QueryPerformanceCounter(res: var uint64) {. proc QueryPerformanceCounter(res: var uint64) {.
importc: "QueryPerformanceCounter", stdcall, dynlib: "kernel32".} importc: "QueryPerformanceCounter", stdcall, dynlib: "kernel32".}
@ -98,6 +102,9 @@ proc getMonoTime*(): MonoTime {.tags: [TimeEffect].} =
mach_timebase_info(machAbsoluteTimeFreq) mach_timebase_info(machAbsoluteTimeFreq)
result = MonoTime(ticks: ticks * machAbsoluteTimeFreq.numer div result = MonoTime(ticks: ticks * machAbsoluteTimeFreq.numer div
machAbsoluteTimeFreq.denom) machAbsoluteTimeFreq.denom)
elif defined(zephyr):
let ticks = k_ticks_to_ns_floor64(k_uptime_ticks())
result = MonoTime(ticks: ticks)
elif defined(posix): elif defined(posix):
var ts: Timespec var ts: Timespec
discard clock_gettime(CLOCK_MONOTONIC, ts) discard clock_gettime(CLOCK_MONOTONIC, ts)

12
lib/std/sysrand.nim
View file

@ -63,7 +63,7 @@ when defined(posix):
import posix import posix
const const
batchImplOS = defined(freebsd) or defined(openbsd) or (defined(macosx) and not defined(ios)) batchImplOS = defined(freebsd) or defined(openbsd) or defined(zephyr) or (defined(macosx) and not defined(ios))
batchSize {.used.} = 256 batchSize {.used.} = 256
when batchImplOS: when batchImplOS:
@ -207,6 +207,16 @@ elif defined(openbsd):
proc getRandomImpl(p: pointer, size: int): int {.inline.} = proc getRandomImpl(p: pointer, size: int): int {.inline.} =
result = getentropy(p, cint(size)).int result = getentropy(p, cint(size)).int
elif defined(zephyr):
proc sys_csrand_get(dst: pointer, length: csize_t): cint {.importc: "sys_csrand_get", header: "<random/rand32.h>".}
# Fill the destination buffer with cryptographically secure
# random data values
#
proc getRandomImpl(p: pointer, size: int): int {.inline.} =
# 0 if success, -EIO if entropy reseed error
result = sys_csrand_get(p, csize_t(size)).int
elif defined(freebsd): elif defined(freebsd):
type cssize_t {.importc: "ssize_t", header: "<sys/types.h>".} = int type cssize_t {.importc: "ssize_t", header: "<sys/types.h>".} = int