runtime: move osinit to Go

    
    This is a step toward updating libgo to 1.13.  This adds the 1.13
    version of the osinit function to Go code, and removes the
    corresponding code from the C runtime.  This should simplify future updates.
    Some additional 1.13 code was brought in to simplify this change.
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/191717

From-SVN: r275010

10 files changed, 4 insertions, 145 deletions

diff --git a/libgo/runtime/getncpu-aix.c b/libgo/runtime/getncpu-aix.c
deleted file mode 100644
index 064eed8570c..00000000000
--- a/libgo/runtime/getncpu-aix.c
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright 2012 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 <sys/types.h>
-#include <sys/systemcfg.h>
-
-#include "runtime.h"
-#include "defs.h"
-
-int32_t
-getproccount(void)
-{
-	return _system_configuration.ncpus;
-}
diff --git a/libgo/runtime/getncpu-bsd.c b/libgo/runtime/getncpu-bsd.c
deleted file mode 100644
index 00a81d1ddae..00000000000
--- a/libgo/runtime/getncpu-bsd.c
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright 2012 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 <sys/types.h>
-#include <sys/sysctl.h>
-
-#include "runtime.h"
-#include "defs.h"
-
-int32
-getproccount(void)
-{
-	int mib[2], out;
-	size_t len;
-
-	mib[0] = CTL_HW;
-	mib[1] = HW_NCPU;
-	len = sizeof(out);
-	if(sysctl(mib, 2, &out, &len, NULL, 0) >= 0)
-		return (int32)out;
-	else
-		return 0;
-}
diff --git a/libgo/runtime/getncpu-hurd.c b/libgo/runtime/getncpu-hurd.c
deleted file mode 100644
index 5d5d7025dfe..00000000000
--- a/libgo/runtime/getncpu-hurd.c
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2012 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 <unistd.h>
-
-#include "runtime.h"
-#include "defs.h"
-
-int32
-getproccount(void)
-{
-	int32 n;
-	n = (int32)sysconf(_SC_NPROCESSORS_ONLN);
-	return n > 1 ? n : 1;
-}
diff --git a/libgo/runtime/getncpu-irix.c b/libgo/runtime/getncpu-irix.c
deleted file mode 100644
index a65ca63d2ae..00000000000
--- a/libgo/runtime/getncpu-irix.c
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2012 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 <unistd.h>
-
-#include "runtime.h"
-#include "defs.h"
-
-int32
-getproccount(void)
-{
-	int32 n;
-	n = (int32)sysconf(_SC_NPROC_ONLN);
-	return n > 1 ? n : 1;
-}
diff --git a/libgo/runtime/getncpu-linux.c b/libgo/runtime/getncpu-linux.c
deleted file mode 100644
index de6606ff47c..00000000000
--- a/libgo/runtime/getncpu-linux.c
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2012 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 <features.h>
-#include <sched.h>
-
-// CPU_COUNT is only provided by glibc 2.6 or higher
-#ifndef CPU_COUNT
-#define CPU_COUNT(set) _CPU_COUNT((unsigned int *)(set), sizeof(*(set))/sizeof(unsigned int))
-static int _CPU_COUNT(unsigned int *set, size_t len) {
-	int cnt;
-
-	cnt = 0;
-	while (len--)
-		cnt += __builtin_popcount(*set++);
-	return cnt;
-}
-#endif
-
-#include "runtime.h"
-#include "defs.h"
-
-int32
-getproccount(void)
-{
-	cpu_set_t set;
-	int32 r, cnt;
-
-	cnt = 0;
-	r = sched_getaffinity(0, sizeof(set), &set);
-	if(r == 0)
-		cnt += CPU_COUNT(&set);
-
-	return cnt ? cnt : 1;
-}
diff --git a/libgo/runtime/getncpu-none.c b/libgo/runtime/getncpu-none.c
deleted file mode 100644
index ba6fd4e689d..00000000000
--- a/libgo/runtime/getncpu-none.c
+++ /dev/null
@@ -1,12 +0,0 @@
-// Copyright 2012 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 "defs.h"
-
-int32
-getproccount(void)
-{
-	return 0;
-}
diff --git a/libgo/runtime/getncpu-solaris.c b/libgo/runtime/getncpu-solaris.c
deleted file mode 100644
index 5d5d7025dfe..00000000000
--- a/libgo/runtime/getncpu-solaris.c
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2012 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 <unistd.h>
-
-#include "runtime.h"
-#include "defs.h"
-
-int32
-getproccount(void)
-{
-	int32 n;
-	n = (int32)sysconf(_SC_NPROCESSORS_ONLN);
-	return n > 1 ? n : 1;
-}
diff --git a/libgo/runtime/go-libmain.c b/libgo/runtime/go-libmain.c
index f3795690e04..10b202bf8f8 100644
--- a/libgo/runtime/go-libmain.c
+++ b/libgo/runtime/go-libmain.c
@@ -228,8 +228,7 @@ gostart (void *arg)
   runtime_ginit ();
   runtime_check ();
   runtime_args (a->argc, (byte **) a->argv);
-  setncpu (getproccount ());
-  setpagesize (getpagesize ());
+  runtime_osinit ();
   runtime_schedinit ();
   __go_go ((uintptr)(runtime_main), NULL);
   runtime_mstart (runtime_m ());
diff --git a/libgo/runtime/go-main.c b/libgo/runtime/go-main.c
index 51ce15fdbc1..dcf763af8c8 100644
--- a/libgo/runtime/go-main.c
+++ b/libgo/runtime/go-main.c
@@ -52,8 +52,7 @@ main (int argc, char **argv)
   runtime_cpuinit ();
   runtime_check ();
   runtime_args (argc, (byte **) argv);
-  setncpu (getproccount ());
-  setpagesize (getpagesize ());
+  runtime_osinit ();
   runtime_schedinit ();
   __go_go ((uintptr)(runtime_main), NULL);
   runtime_mstart (runtime_m ());
diff --git a/libgo/runtime/runtime.h b/libgo/runtime/runtime.h
index 6da7bdf497f..4102f5da0a0 100644
--- a/libgo/runtime/runtime.h
+++ b/libgo/runtime/runtime.h
@@ -211,6 +211,8 @@ void	runtime_gogo(G*)
 struct __go_func_type;
 void	runtime_args(int32, byte**)
   __asm__ (GOSYM_PREFIX "runtime.args");
+void	runtime_osinit(void)
+  __asm__ (GOSYM_PREFIX "runtime.osinit");
 void	runtime_alginit(void)
   __asm__ (GOSYM_PREFIX "runtime.alginit");
 void	runtime_goargs(void)
@@ -429,8 +431,6 @@ extern void __go_syminfo_fnname_callback(void*, uintptr_t, const char*,
 extern void runtime_main(void*)
   __asm__(GOSYM_PREFIX "runtime.main");
 
-int32 getproccount(void);
-
 #define PREFETCH(p) __builtin_prefetch(p)
 
 void	runtime_badsignal(int);
@@ -456,12 +456,8 @@ extern void setSupportAES(bool)
   __asm__ (GOSYM_PREFIX "runtime.setSupportAES");
 extern void typedmemmove(const Type *, void *, const void *)
   __asm__ (GOSYM_PREFIX "runtime.typedmemmove");
-extern void setncpu(int32)
-  __asm__(GOSYM_PREFIX "runtime.setncpu");
 extern Sched* runtime_getsched(void)
   __asm__ (GOSYM_PREFIX "runtime.getsched");
-extern void setpagesize(uintptr_t)
-  __asm__(GOSYM_PREFIX "runtime.setpagesize");
 
 struct funcfileline_return
 {