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Implement zephyr urandom and monotime #19142

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merged 2 commits into from
Nov 14, 2021
Merged

Implement zephyr urandom and monotime #19142

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57b5ebb
implement urandom for Zephyr
Nov 13, 2021
88817d1
add monotime on zephyr
Nov 13, 2021
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7 changes: 7 additions & 0 deletions lib/std/monotimes.nim
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Original file line number Diff line number Diff line change
Expand Up @@ -76,6 +76,10 @@ when defined(js):
elif defined(posix) and not defined(osx):
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):
proc QueryPerformanceCounter(res: var uint64) {.
importc: "QueryPerformanceCounter", stdcall, dynlib: "kernel32".}
Expand All @@ -98,6 +102,9 @@ proc getMonoTime*(): MonoTime {.tags: [TimeEffect].} =
mach_timebase_info(machAbsoluteTimeFreq)
result = MonoTime(ticks: ticks * machAbsoluteTimeFreq.numer div
machAbsoluteTimeFreq.denom)
elif defined(zephyr):
let ticks = k_ticks_to_ns_floor64(k_uptime_ticks())
result = MonoTime(ticks: ticks)
elif defined(posix):
var ts: Timespec
discard clock_gettime(CLOCK_MONOTONIC, ts)
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12 changes: 11 additions & 1 deletion lib/std/sysrand.nim
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Expand Up @@ -63,7 +63,7 @@ when defined(posix):
import posix

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

when batchImplOS:
Expand Down Expand Up @@ -207,6 +207,16 @@ elif defined(openbsd):
proc getRandomImpl(p: pointer, size: int): int {.inline.} =
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):
type cssize_t {.importc: "ssize_t", header: "<sys/types.h>".} = int

Expand Down