Brought the userland time initialization into more or less final shape:

- renamed setup_rtc_boottime() to __init_time()
- __init_time() is now initialized at libroot.so startup
- introduced new __arch_init_time() that does the arch dependent stuff,
  for now it just sets the system_time() conversion factor (that's the
  part that will change later on)
- os/time.c now keeps a pointer to the real_time_data around, not only
  to the boot time - maybe we'll it for other stuff as well later.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9995 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kernel/libroot/libroot_init.c

@@ -1,7 +1,7 @@
-/* 
-** Copyright 2003-2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
-** Distributed under the terms of the Haiku License.
-*/
+/*
+ * Copyright 2003-2004, Axel Dörfler, axeld@pinc-software.de.
+ * Distributed under the terms of the MIT License.
+ */
 
 
 #include <libroot_private.h>
@@ -37,6 +37,7 @@ initialize_before(image_id imageID, struct uspace_program_args const *args)
 			__progname++;
 	}
 
+	__init_time();
 	__init_image(args);
 	__init_dlfcn(args);
 	__init_fork();

src/kernel/libroot/os/arch/x86/Jamfile

@@ -1,15 +1,15 @@
 SubDir OBOS_TOP src kernel libroot os arch x86 ;
 
 KernelMergeObject os_arch_$(OBOS_ARCH).o :
-	<$(SOURCE_GRIST)>atomic.S
-	<$(SOURCE_GRIST)>byteorder.S
-	<$(SOURCE_GRIST)>cpuid.S
-	<$(SOURCE_GRIST)>systeminfo.c
-	<$(SOURCE_GRIST)>system_time.S
-	<$(SOURCE_GRIST)>thread.c
-	<$(SOURCE_GRIST)>tls.c
-	:
-	-fPIC -DPIC
+	atomic.S
+	byteorder.S
+	cpuid.S
+	systeminfo.c
+	system_time.S
+	thread.c
+	time.c
+	tls.c
+	: -fPIC -DPIC
 	;
 
 MergeObjectFromObjects kernel_os_arch_$(OBOS_ARCH).o :

src/kernel/libroot/os/arch/x86/time.c

@@ -0,0 +1,19 @@
+/* 
+ * Copyright 2004, Axel Dörfler, axeld@pinc-software.de.
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include <libroot_private.h>
+#include <real_time_data.h>
+#include <arch_cpu.h>
+
+
+void
+__arch_init_time(struct real_time_data *data)
+{
+	// ToDo: this should only store a pointer to that value
+	// ToDo: this function should not clobber the global name space
+	setup_system_time(data->system_time_conversion_factor);
+}
+

src/kernel/libroot/os/time.c

@@ -1,48 +1,54 @@
 /* 
-** Copyright 2002-2003, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
-** Distributed under the terms of the OpenBeOS License.
-*/
+ * Copyright 2002-2004, Axel Dörfler, axeld@pinc-software.de.
+ * Distributed under the terms of the MIT License.
+ */
 
 
 #include <OS.h>
+
 #include <string.h>
-#include "syscalls.h"
-#include "real_time_data.h"
+#include <syslog.h>
 
-static volatile bigtime_t *sBootTime = NULL;
+#include <libroot_private.h>
+#include <real_time_data.h>
+#include <syscalls.h>
 
-static status_t
-setup_rtc_boottime()
+
+static struct real_time_data sRealTimeDefaults = {
+	0,
+	100000
+};
+static struct real_time_data *sRealTimeData;
+
+
+void
+__init_time(void)
 {
 	area_id dataArea; 
 	area_info info;
-	status_t err;
 
 	dataArea = find_area("real time data userland");
-	
-	if (dataArea < 0) {
-		printf("setup_rtc_boottime: error finding real time data area %s\n",
-			strerror(dataArea));
-		return dataArea;
-	}
+	if (dataArea < 0 || get_area_info(dataArea, &info) < B_OK) {
+		syslog(LOG_ERR, "error finding real time data area: %s\n", strerror(dataArea));
+		sRealTimeData = &sRealTimeDefaults;
+	} else
+		sRealTimeData = (struct real_time_data *)info.address;
 
-	err = get_area_info(dataArea, &info);
-	if (err < B_OK) {
-		printf("setup_rtc_boottime: error getting real time data info\n");
-		return err;
-	}
-	
-	sBootTime = &(((struct real_time_data *)info.address)->boot_time);
-	return B_OK;
+	__arch_init_time(sRealTimeData);
 }
 
 
 uint32
 real_time_clock(void)
 {
-	if (!sBootTime && (setup_rtc_boottime()!=B_OK))
-		return 0;
-	return (*sBootTime + system_time()) / 1000000;
+	return (sRealTimeData->boot_time + system_time()) / 1000000;
+}
+
+
+bigtime_t
+real_time_clock_usecs(void)
+{
+	return sRealTimeData->boot_time + system_time();
 }
 
 
@@ -53,15 +59,6 @@ set_real_time_clock(uint32 secs)
 }
 
 
-bigtime_t
-real_time_clock_usecs(void)
-{
-	if (!sBootTime && (setup_rtc_boottime() != B_OK))
-		return 0;
-	return *sBootTime + system_time();
-}
-
-
 status_t
 set_timezone(char *timezone)
 {
@@ -70,17 +67,6 @@ set_timezone(char *timezone)
 }
 
 
-/*
-// ToDo: currently defined in atomic.S - but should be in its own file time.S
-bigtime_t
-system_time(void)
-{
-	// time since booting in microseconds
-	return sys_system_time();
-}
-*/
-
-
 bigtime_t
 set_alarm(bigtime_t when, uint32 flags)
 {