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#
#
# Nim's Runtime Library
# (c) Copyright 2017 Jeff Ciesielski
#
# See the file "copying.txt", included in this
# distribution, for details about the copyright.
#
## This module contains code for generating volatile loads and stores,
## which are useful in embedded and systems programming.
proc volatileLoad*[T](src: ptr T): T {.inline, noinit.} =
## Generates a volatile load of the value stored in the container `src`.
## Note that this only effects code generation on `C` like backends.
when nimvm:
result = src[]
else:
when defined(js):
result = src[]
else:
{.emit: [result, " = (*(", typeof(src[]), " volatile*)", src, ");"].}
proc volatileStore*[T](dest: ptr T, val: T) {.inline.} =
## Generates a volatile store into the container `dest` of the value
## `val`. Note that this only effects code generation on `C` like
## backends.
when nimvm:
dest[] = val
else:
when defined(js):
dest[] = val
else:
{.emit: ["*((", typeof(dest[]), " volatile*)(", dest, ")) = ", val, ";"].}
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