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runtime: revert 3c2cddfbdaec

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It appears, syscall.NewCallback still
uses heap to store executable code.

R=golang-dev, khr
CC=golang-dev
https://golang.org/cl/9060046
This commit is contained in:
Alex Brainman 2013-05-17 14:23:29 +10:00
parent 28f74608b5
commit c15ca825ad
1 changed files with 4 additions and 5 deletions
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9
src/pkg/runtime/mem_windows.c
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@ -13,7 +13,6 @@ enum {
MEM_RESERVE = 0x2000,
MEM_RELEASE = 0x8000,
PAGE_READWRITE = 0x0004,
PAGE_EXECUTE_READWRITE = 0x40,
};
@ -26,7 +25,7 @@ void*
runtime·SysAlloc(uintptr n)
{
mstats.sys += n;
return runtime·stdcall(runtime·VirtualAlloc, 4, nil, n, (uintptr)(MEM_COMMIT|MEM_RESERVE), (uintptr)PAGE_READWRITE);
return runtime·stdcall(runtime·VirtualAlloc, 4, nil, n, (uintptr)(MEM_COMMIT|MEM_RESERVE), (uintptr)PAGE_EXECUTE_READWRITE);
}
void
@ -52,12 +51,12 @@ runtime·SysReserve(void *v, uintptr n)
{
// v is just a hint.
// First try at v.
v = runtime·stdcall(runtime·VirtualAlloc, 4, v, n, (uintptr)MEM_RESERVE, (uintptr)PAGE_READWRITE);
v = runtime·stdcall(runtime·VirtualAlloc, 4, v, n, (uintptr)MEM_RESERVE, (uintptr)PAGE_EXECUTE_READWRITE);
if(v != nil)
return v;
// Next let the kernel choose the address.
return runtime·stdcall(runtime·VirtualAlloc, 4, nil, n, (uintptr)MEM_RESERVE, (uintptr)PAGE_READWRITE);
return runtime·stdcall(runtime·VirtualAlloc, 4, nil, n, (uintptr)MEM_RESERVE, (uintptr)PAGE_EXECUTE_READWRITE);
}
void
@ -66,7 +65,7 @@ runtime·SysMap(void *v, uintptr n)
void *p;
mstats.sys += n;
p = runtime·stdcall(runtime·VirtualAlloc, 4, v, n, (uintptr)MEM_COMMIT, (uintptr)PAGE_READWRITE);
p = runtime·stdcall(runtime·VirtualAlloc, 4, v, n, (uintptr)MEM_COMMIT, (uintptr)PAGE_EXECUTE_READWRITE);
if(p != v)
runtime·throw("runtime: cannot map pages in arena address space");
}