From f1f452b3cf30baba2dfb14fa6fb2f270e2cab5b9 Mon Sep 17 00:00:00 2001
From: Alexander von Gluck IV <kallisti5@unixzen.com>
Date: Mon, 1 Jul 2019 14:10:32 -0500
Subject: [PATCH] libroot/os: Fix missing time funcs on riscv64

Change-Id: I291ebc949d63860e20eb609e4d3d2f600309d4e9
Reviewed-on: https://review.haiku-os.org/c/1553
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
---
 src/system/libroot/os/arch/riscv64/Jamfile    |  4 +++
 .../libroot/os/arch/riscv64/stack_frame.c     | 25 ++++++++++++++
 .../libroot/os/arch/riscv64/system_time.c     | 33 +++++++++++++++++++
 src/system/libroot/os/arch/riscv64/time.c     | 32 ++++++++++++++++++
 4 files changed, 94 insertions(+)
 create mode 100644 src/system/libroot/os/arch/riscv64/stack_frame.c
 create mode 100644 src/system/libroot/os/arch/riscv64/system_time.c
 create mode 100644 src/system/libroot/os/arch/riscv64/time.c

diff --git a/src/system/libroot/os/arch/riscv64/Jamfile b/src/system/libroot/os/arch/riscv64/Jamfile
index 330af393f7..64aa1a8422 100644
--- a/src/system/libroot/os/arch/riscv64/Jamfile
+++ b/src/system/libroot/os/arch/riscv64/Jamfile
@@ -13,7 +13,11 @@ for architectureObject in [ MultiArchSubDirSetup riscv64 ] {
 		SEARCH_SOURCE += [ FDirName $(SUBDIR) $(DOTDOT) generic ] ;
 
 		MergeObject <$(architecture)>os_arch_$(TARGET_ARCH).o :
+			stack_frame.c
+			system_time.c
+
 			tls.c
+			time.c
 			thread.c
 
 			generic_atomic.cpp
diff --git a/src/system/libroot/os/arch/riscv64/stack_frame.c b/src/system/libroot/os/arch/riscv64/stack_frame.c
new file mode 100644
index 0000000000..d5db3c3f4d
--- /dev/null
+++ b/src/system/libroot/os/arch/riscv64/stack_frame.c
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2008, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Distributed under the terms of the MIT License.
+*/
+
+#include <SupportDefs.h>
+
+#include <libroot_private.h>
+
+
+void*
+get_stack_frame(void)
+{
+	// TODO: Implement!
+	return NULL;
+}
+
+
+void*
+__arch_get_caller(void)
+{
+	// TODO: Implement!
+	return NULL;
+}
+
diff --git a/src/system/libroot/os/arch/riscv64/system_time.c b/src/system/libroot/os/arch/riscv64/system_time.c
new file mode 100644
index 0000000000..fda8bd75e8
--- /dev/null
+++ b/src/system/libroot/os/arch/riscv64/system_time.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2012, Haiku, Inc.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		François Revol <revol@free.fr>
+ */
+
+#include <OS.h>
+
+#include <arch_cpu.h>
+#include <libroot_private.h>
+#include <real_time_data.h>
+
+static vint32 *sConversionFactor;
+
+//XXX: this is a hack
+// remove me when platform code works
+static int64
+__riscv64_get_time_base(void)
+{
+	static uint64 time_dilation_field = 0;
+	return time_dilation_field++;
+}
+
+bigtime_t
+system_time(void)
+{
+	uint64 timeBase = __riscv64_get_time_base();
+
+	uint32 cv = sConversionFactor ? *sConversionFactor : 0;
+	return (timeBase >> 32) * cv + (((timeBase & 0xffffffff) * cv) >> 32);
+}
diff --git a/src/system/libroot/os/arch/riscv64/time.c b/src/system/libroot/os/arch/riscv64/time.c
new file mode 100644
index 0000000000..f365904c03
--- /dev/null
+++ b/src/system/libroot/os/arch/riscv64/time.c
@@ -0,0 +1,32 @@
+/* 
+ * Copyright 2006, Ingo Weinhold <bonefish@cs.tu-berlin.de>.
+ * Distributed under the terms of the MIT License.
+ */
+
+#include <OS.h>
+
+#include <arch_cpu.h>
+#include <libroot_private.h>
+#include <real_time_data.h>
+
+
+static struct arch_real_time_data *sRealTimeData;
+
+void
+__arch_init_time(struct real_time_data *data, bool setDefaults)
+{
+	sRealTimeData = &data->arch_data;
+
+	if (setDefaults) {
+		sRealTimeData->system_time_conversion_factor = 1000000000LL;
+	}
+
+	// __riscv64_setup_system_time(&sRealTimeData->system_time_conversion_factor);
+}
+
+
+bigtime_t
+__arch_get_system_time_offset(struct real_time_data *data)
+{
+	return 0;
+}