2010-10-18 10:32:55 -06:00
|
|
|
// Copyright 2010 The Go Authors. All rights reserved.
|
|
|
|
// Use of this source code is governed by a BSD-style
|
|
|
|
// license that can be found in the LICENSE file.
|
|
|
|
|
|
|
|
#include "runtime.h"
|
|
|
|
#include "malloc.h"
|
|
|
|
|
|
|
|
extern byte end[];
|
|
|
|
static byte *bloc = { end };
|
|
|
|
|
|
|
|
enum
|
|
|
|
{
|
|
|
|
Round = 7
|
|
|
|
};
|
|
|
|
|
|
|
|
void*
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·SysAlloc(uintptr ask)
|
2010-10-18 10:32:55 -06:00
|
|
|
{
|
|
|
|
uintptr bl;
|
|
|
|
|
|
|
|
// Plan 9 sbrk from /sys/src/libc/9sys/sbrk.c
|
|
|
|
bl = ((uintptr)bloc + Round) & ~Round;
|
2010-12-06 14:38:28 -07:00
|
|
|
if(runtime·brk_((void*)(bl + ask)) < 0)
|
2010-10-18 10:32:55 -06:00
|
|
|
return (void*)-1;
|
|
|
|
bloc = (byte*)bl + ask;
|
|
|
|
return (void*)bl;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·SysFree(void *v, uintptr n)
|
2010-10-18 10:32:55 -06:00
|
|
|
{
|
|
|
|
// from tiny/mem.c
|
|
|
|
// Push pointer back if this is a free
|
|
|
|
// of the most recent SysAlloc.
|
|
|
|
n += (n + Round) & ~Round;
|
|
|
|
if(bloc == (byte*)v+n)
|
|
|
|
bloc -= n;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·SysUnused(void *v, uintptr n)
|
2010-10-18 10:32:55 -06:00
|
|
|
{
|
|
|
|
USED(v, n);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·SysMemInit(void)
|
2010-10-18 10:32:55 -06:00
|
|
|
{
|
|
|
|
}
|