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Added 'ansic' os support for minimal (embedded) targets (#13088)

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* os:any implementation
* os:asny: omit flock/funlock calls in echoBinSafe
* Disabled default "unhandled expection" reporting for `--os:any` to reduce
code size. Added unhandledExceptionHook instead which can be used to get
a notification from Nim and handle it from the application.
This commit is contained in:
Ico Doornekamp 2020-01-15 11:06:41 +01:00 • committed by Andreas Rumpf
commit 79a326759a
6 changed files with 87 additions and 73 deletions
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19
lib/system/mmdisp.nim
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@ -354,11 +354,11 @@ elif defined(gogc):
proc deallocOsPages(r: var MemRegion) {.inline.} = discard
proc deallocOsPages() {.inline.} = discard
elif defined(nogc) and defined(useMalloc):
elif (defined(nogc) or defined(gcDestructors)) and defined(useMalloc):
when not defined(useNimRtl):
proc alloc(size: Natural): pointer =
var x = c_malloc(size + sizeof(size))
var x = c_malloc (size + sizeof(size)).csize_t
if x == nil: raiseOutOfMem()
cast[ptr int](x)[] = size
@ -371,7 +371,7 @@ elif defined(nogc) and defined(useMalloc):
var x = cast[pointer](cast[int](p) - sizeof(newsize))
let oldsize = cast[ptr int](x)[]
x = c_realloc(x, newsize + sizeof(newsize))
x = c_realloc(x, (newsize + sizeof(newsize)).csize_t)
if x == nil: raiseOutOfMem()
@ -384,13 +384,13 @@ elif defined(nogc) and defined(useMalloc):
proc dealloc(p: pointer) = c_free(cast[pointer](cast[int](p) - sizeof(int)))
proc allocShared(size: Natural): pointer =
result = c_malloc(size)
result = c_malloc(size.csize_t)
if result == nil: raiseOutOfMem()
proc allocShared0(size: Natural): pointer =
result = alloc(size)
zeroMem(result, size)
proc reallocShared(p: pointer, newsize: Natural): pointer =
result = c_realloc(p, newsize)
result = c_realloc(p, newsize.csize_t)
if result == nil: raiseOutOfMem()
proc deallocShared(p: pointer) = c_free(p)
@ -400,7 +400,7 @@ elif defined(nogc) and defined(useMalloc):
proc GC_setStrategy(strategy: GC_Strategy) = discard
proc GC_enableMarkAndSweep() = discard
proc GC_disableMarkAndSweep() = discard
proc GC_getStatistics(): string = return ""
#proc GC_getStatistics(): string = return ""
proc getOccupiedMem(): int = discard
proc getFreeMem(): int = discard
@ -410,13 +410,6 @@ elif defined(nogc) and defined(useMalloc):
proc initGC() = discard
proc newObj(typ: PNimType, size: int): pointer {.compilerproc.} =
result = alloc0(size)
proc newSeq(typ: PNimType, len: int): pointer {.compilerproc.} =
result = newObj(typ, addInt(mulInt(len, typ.base.size), GenericSeqSize))
cast[PGenericSeq](result).len = len
cast[PGenericSeq](result).reserved = len
proc newObjNoInit(typ: PNimType, size: int): pointer =
result = alloc(size)