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system.nim: memory must be part of system so that its compilerprocs c… (#25365)

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…an work for IC
This commit is contained in:
Andreas Rumpf
2025-12-18 04:53:09 +01:00
committed by GitHub
parent 8747160a9a
commit 80cf9a8ce8
4 changed files with 59 additions and 8 deletions
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2
compiler/semfold.nim
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@@ -16,7 +16,7 @@ import
commands, magicsys, modulegraphs, lineinfos, wordrecg
import std/[strutils, math, strtabs]
from system/memory import nimCStrLen
#from system/memory import nimCStrLen
when defined(nimPreviewSlimSystem):
import std/[assertions, formatfloat]

2
lib/system.nim
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@@ -1618,7 +1618,7 @@ proc instantiationInfo*(index = -1, fullPaths = false): tuple[
when notJSnotNims:
import system/ansi_c
import system/memory
include system/sysmem
when notJSnotNims and defined(nimSeqsV2):
const nimStrVersion {.core.} = 2

11
lib/system/memory.nim
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@@ -2,10 +2,9 @@
const useLibC = not defined(nimNoLibc)
when useLibC:
import ansi_c
import ansi_c
proc nimCopyMem*(dest, source: pointer, size: Natural) {.nonReloadable, compilerproc, inline, enforceNoRaises.} =
proc nimCopyMem*(dest, source: pointer, size: Natural) {.nonReloadable, inline, enforceNoRaises.} =
when useLibC:
c_memcpy(dest, source, cast[csize_t](size))
else:
@@ -27,10 +26,10 @@ proc nimSetMem*(a: pointer, v: cint, size: Natural) {.nonReloadable, inline, enf
a[i] = v
inc i
proc nimZeroMem*(p: pointer, size: Natural) {.compilerproc, nonReloadable, inline, enforceNoRaises.} =
proc nimZeroMem*(p: pointer, size: Natural) {.nonReloadable, inline, enforceNoRaises.} =
nimSetMem(p, 0, size)
proc nimCmpMem*(a, b: pointer, size: Natural): cint {.compilerproc, nonReloadable, inline, enforceNoRaises.} =
proc nimCmpMem*(a, b: pointer, size: Natural): cint {.nonReloadable, inline, enforceNoRaises.} =
when useLibC:
c_memcmp(a, b, cast[csize_t](size))
else:
@@ -42,7 +41,7 @@ proc nimCmpMem*(a, b: pointer, size: Natural): cint {.compilerproc, nonReloadabl
if d != 0: return d
inc i
proc nimCStrLen*(a: cstring): int {.compilerproc, nonReloadable, inline, enforceNoRaises.} =
proc nimCStrLen*(a: cstring): int {.nonReloadable, inline, enforceNoRaises.} =
if a.isNil: return 0
when useLibC:
cast[int](c_strlen(a))

52
lib/system/sysmem.nim Normal file
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@@ -0,0 +1,52 @@
{.push stack_trace: off.}
const useLibC = not defined(nimNoLibc)
proc nimCopyMem(dest, source: pointer, size: Natural) {.nonReloadable, compilerproc, inline, enforceNoRaises.} =
when useLibC:
c_memcpy(dest, source, cast[csize_t](size))
else:
let d = cast[ptr UncheckedArray[byte]](dest)
let s = cast[ptr UncheckedArray[byte]](source)
var i = 0
while i < size:
d[i] = s[i]
inc i
proc nimSetMem(a: pointer, v: cint, size: Natural) {.nonReloadable, inline, enforceNoRaises.} =
when useLibC:
c_memset(a, v, cast[csize_t](size))
else:
let a = cast[ptr UncheckedArray[byte]](a)
var i = 0
let v = cast[byte](v)
while i < size:
a[i] = v
inc i
proc nimZeroMem(p: pointer, size: Natural) {.compilerproc, nonReloadable, inline, enforceNoRaises.} =
nimSetMem(p, 0, size)
proc nimCmpMem(a, b: pointer, size: Natural): cint {.compilerproc, nonReloadable, inline, enforceNoRaises.} =
when useLibC:
c_memcmp(a, b, cast[csize_t](size))
else:
let a = cast[ptr UncheckedArray[byte]](a)
let b = cast[ptr UncheckedArray[byte]](b)
var i = 0
while i < size:
let d = a[i].cint - b[i].cint
if d != 0: return d
inc i
proc nimCStrLen*(a: cstring): int {.compilerproc, nonReloadable, inline, enforceNoRaises.} =
if a.isNil: return 0
when useLibC:
cast[int](c_strlen(a))
else:
var a = cast[ptr byte](a)
while a[] != 0:
a = cast[ptr byte](cast[uint](a) + 1)
inc result
{.pop.}