mirror of
https://github.com/golang/go
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851f30136d
Collapse the arch,os-specific directories into the main directory by renaming xxx/foo.c to foo_xxx.c, and so on. There are no substantial edits here, except to the Makefile. The assumption is that the Go tool will #define GOOS_darwin and GOARCH_amd64 and will make any file named something like signals_darwin.h available as signals_GOOS.h during the build. This replaces what used to be done with -I$(GOOS). There is still work to be done to make runtime build with standard tools, but this is a big step. After this we will have to write a script to generate all the generated files so they can be checked in (instead of generated during the build). R=r, iant, r, lucio.dere CC=golang-dev https://golang.org/cl/5490053
72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "runtime.h"
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#include "arch_GOARCH.h"
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#include "os_GOOS.h"
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#include "defs_GOOS_GOARCH.h"
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#include "malloc.h"
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enum {
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MEM_COMMIT = 0x1000,
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MEM_RESERVE = 0x2000,
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MEM_RELEASE = 0x8000,
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PAGE_EXECUTE_READWRITE = 0x40,
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};
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#pragma dynimport runtime·VirtualAlloc VirtualAlloc "kernel32.dll"
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#pragma dynimport runtime·VirtualFree VirtualFree "kernel32.dll"
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extern void *runtime·VirtualAlloc;
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extern void *runtime·VirtualFree;
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void*
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runtime·SysAlloc(uintptr n)
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{
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mstats.sys += n;
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return runtime·stdcall(runtime·VirtualAlloc, 4, nil, n, (uintptr)(MEM_COMMIT|MEM_RESERVE), (uintptr)PAGE_EXECUTE_READWRITE);
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}
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void
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runtime·SysUnused(void *v, uintptr n)
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{
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USED(v);
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USED(n);
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}
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void
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runtime·SysFree(void *v, uintptr n)
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{
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uintptr r;
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mstats.sys -= n;
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r = (uintptr)runtime·stdcall(runtime·VirtualFree, 3, v, (uintptr)0, (uintptr)MEM_RELEASE);
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if(r == 0)
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runtime·throw("runtime: failed to release pages");
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}
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void*
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runtime·SysReserve(void *v, uintptr n)
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{
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// v is just a hint.
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// First try at v.
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v = runtime·stdcall(runtime·VirtualAlloc, 4, v, n, (uintptr)MEM_RESERVE, (uintptr)PAGE_EXECUTE_READWRITE);
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if(v != nil)
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return v;
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// Next let the kernel choose the address.
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return runtime·stdcall(runtime·VirtualAlloc, 4, nil, n, (uintptr)MEM_RESERVE, (uintptr)PAGE_EXECUTE_READWRITE);
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}
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void
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runtime·SysMap(void *v, uintptr n)
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{
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void *p;
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mstats.sys += n;
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p = runtime·stdcall(runtime·VirtualAlloc, 4, v, n, (uintptr)MEM_COMMIT, (uintptr)PAGE_EXECUTE_READWRITE);
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if(p != v)
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runtime·throw("runtime: cannot map pages in arena address space");
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}
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