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runtime: complete windows SysReserve 

Should fix windows/386 build.

R=brainman
CC=golang-dev
https://golang.org/cl/4170041
This commit is contained in:
Russ Cox 2011-02-10 15:39:08 -05:00
parent 4774a19530
commit 12bdb29bdf
1 changed files with 8 additions and 1 deletions
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9
src/pkg/runtime/windows/mem.c
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@ -48,7 +48,14 @@ runtime·SysFree(void *v, uintptr n)
void*
runtime·SysReserve(void *v, uintptr n)
{
return runtime·stdcall(runtime·VirtualAlloc, 4, v, n, MEM_RESERVE, PAGE_EXECUTE_READWRITE);
// v is just a hint.
// First try at v.
v = runtime·stdcall(runtime·VirtualAlloc, 4, v, n, MEM_RESERVE, PAGE_EXECUTE_READWRITE);
if(v != nil)
return v;
// Next let the kernel choose the address.
return runtime·stdcall(runtime·VirtualAlloc, 4, nil, n, MEM_RESERVE, PAGE_EXECUTE_READWRITE);
}
void