Merge pull request #4302 from janvrany/pr/riscv-initial-port-code

RISC-V: add initial port code

port/CMakeLists.txt

@@ -322,6 +322,16 @@ if(OMR_HOST_OS STREQUAL "linux")
 		target_include_directories(omrport_obj PRIVATE linuxs390)
 	endif()
 
+	if(OMR_ARCH_RISCV)
+		if(OMR_ENV_DATA64)
+			list(APPEND VPATH linuxriscv64)
+			target_include_directories(omrport_obj PRIVATE linuxriscv64)
+		else()
+			list(APPEND VPATH linuxriscv32)
+			target_include_directories(omrport_obj PRIVATE linuxriscv32)
+		endif()
+	endif()
+
 	list(APPEND VPATH linux)
 	target_include_directories(omrport_obj PRIVATE linux)
 endif()

port/linuxriscv64/omrsignal_context.c

@@ -0,0 +1,163 @@
+/*******************************************************************************
+ * Copyright (c) 2019, 2019 IBM Corp. and others
+ *
+ * This program and the accompanying materials are made available under
+ * the terms of the Eclipse Public License 2.0 which accompanies this
+ * distribution and is available at https://www.eclipse.org/legal/epl-2.0/
+ * or the Apache License, Version 2.0 which accompanies this distribution and
+ * is available at https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * This Source Code may also be made available under the following
+ * Secondary Licenses when the conditions for such availability set
+ * forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
+ * General Public License, version 2 with the GNU Classpath
+ * Exception [1] and GNU General Public License, version 2 with the
+ * OpenJDK Assembly Exception [2].
+ *
+ * [1] https://www.gnu.org/software/classpath/license.html
+ * [2] http://openjdk.java.net/legal/assembly-exception.html
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
+ *******************************************************************************/
+
+#define _GNU_SOURCE
+
+#include <sys/ucontext.h>
+#include <unistd.h>
+
+#include "omrport.h"
+#include "omrportasserts.h"
+#include "omrsignal_context.h"
+
+#define NGPRS 32
+#define NFPRS 32
+
+/* AArch64 Signal Context Reserved Space Size */
+#define RESERVED_SPACE_SZ 4096
+
+void
+fillInUnixSignalInfo(struct OMRPortLibrary *portLibrary, void *contextInfo, struct OMRUnixSignalInfo *signalInfo)
+{
+	signalInfo->platformSignalInfo.context = (ucontext_t *)contextInfo;
+	/* module info is filled on demand */
+}
+
+uint32_t
+infoForSignal(struct OMRPortLibrary *portLibrary, struct OMRUnixSignalInfo *info, int32_t index, const char **name, void **value)
+{
+	*name = "";
+
+	switch (index) {
+
+	case OMRPORT_SIG_SIGNAL_TYPE:
+	case 0:
+		*name = "J9Generic_Signal_Number";
+		*value = &info->portLibrarySignalType;
+		return OMRPORT_SIG_VALUE_32;
+
+	case OMRPORT_SIG_SIGNAL_PLATFORM_SIGNAL_TYPE:
+	case 1:
+		*name = "Signal_Number";
+		if( NULL != info->sigInfo) {
+			*value = &info->sigInfo->si_signo;
+			return OMRPORT_SIG_VALUE_32;
+		}
+		break;
+
+	case OMRPORT_SIG_SIGNAL_ERROR_VALUE:
+	case 2:
+		*name = "Error_Value";
+		*value = &info->sigInfo->si_errno;
+		return OMRPORT_SIG_VALUE_32;
+
+	case OMRPORT_SIG_SIGNAL_CODE:
+	case 3:
+		*name = "Signal_Code";
+		if( NULL != info->sigInfo) {
+			*value = &info->sigInfo->si_code;
+			return OMRPORT_SIG_VALUE_32;
+		}
+		break;
+
+	case OMRPORT_SIG_SIGNAL_HANDLER:
+	case 4:
+		*name = "Handler1";
+		*value = &info->handlerAddress;
+		return OMRPORT_SIG_VALUE_ADDRESS;
+
+	case 5:
+		*name = "Handler2";
+		*value = &info->handlerAddress2;
+		return OMRPORT_SIG_VALUE_ADDRESS;
+
+	case OMRPORT_SIG_SIGNAL_INACCESSIBLE_ADDRESS:
+	case 6:
+		/* si_code > 0 indicates that the signal was generated by the kernel */
+		if ( NULL != info->sigInfo && 0 < info->sigInfo->si_code ) {
+			if ((info->sigInfo->si_signo == SIGBUS) || (info->sigInfo->si_signo == SIGSEGV)) {
+				*name = "InaccessibleAddress";
+				*value = &info->sigInfo->si_addr;
+				return OMRPORT_SIG_VALUE_ADDRESS;
+			}
+		}
+		break;
+
+	// case OMRPORT_SIG_SIGNAL_ADDRESS:
+	// case 7:
+	// 	*name = "fault_address";
+	// 	*value = &((struct sigcontext *)&info->platformSignalInfo.context->uc_mcontext)->fault_address;
+	// 	return OMRPORT_SIG_VALUE_ADDRESS;
+
+
+	default:
+		break;
+	}
+
+	return OMRPORT_SIG_VALUE_UNDEFINED;
+}
+
+
+/**
+ * Walk the 4k reserve space to get the floating point registers since the layout differ 
+ * per-chip
+ * @param	magic_to_find	input	magic number #define in the linux kernel (sigcontext.h)\
+ * that defines which struct the reserved area is at a given space
+ * @param	reserved_space	input	array of bytes that holds all the struct
+ * @see linux/arch/riscv/include/uapi/asm/sigcontext.h for the defines and information to why we need
+ * to walk the space
+
+ */
+void*
+walkReserveSpace(uint32_t magic_to_find, uint8_t *reserved_space)
+{
+	Assert_PRT_true(0 && "Not yet implemented");
+	return NULL;
+}
+
+uint32_t
+infoForFPR(struct OMRPortLibrary *portLibrary, struct OMRUnixSignalInfo *info, int32_t index, const char **name, void **value)
+{
+	Assert_PRT_true(0 && "Not yet implemented");
+	return 0;
+}
+
+uint32_t
+infoForGPR(struct OMRPortLibrary *portLibrary, struct OMRUnixSignalInfo *info, int32_t index, const char **name, void **value)
+{
+	Assert_PRT_true(0 && "Not yet implemented");
+	return 0;
+}
+
+uint32_t
+infoForControl(struct OMRPortLibrary *portLibrary, struct OMRUnixSignalInfo *info, int32_t index, const char **name, void **value)
+{
+	Assert_PRT_true(0 && "Not yet implemented");
+	return 0;
+}
+
+uint32_t
+infoForModule(struct OMRPortLibrary *portLibrary, struct OMRUnixSignalInfo *info, int32_t index, const char **name, void **value)
+{
+	Assert_PRT_true(0 && "Not yet implemented");
+	return 0;
+}

port/linuxriscv64/omrsignal_context.h

@@ -0,0 +1,52 @@
+/*******************************************************************************
+ * Copyright (c) 2019, 2019 IBM Corp. and others
+ *
+ * This program and the accompanying materials are made available under
+ * the terms of the Eclipse Public License 2.0 which accompanies this
+ * distribution and is available at https://www.eclipse.org/legal/epl-2.0/
+ * or the Apache License, Version 2.0 which accompanies this distribution and
+ * is available at https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * This Source Code may also be made available under the following
+ * Secondary Licenses when the conditions for such availability set
+ * forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
+ * General Public License, version 2 with the GNU Classpath
+ * Exception [1] and GNU General Public License, version 2 with the
+ * OpenJDK Assembly Exception [2].
+ *
+ * [1] https://www.gnu.org/software/classpath/license.html
+ * [2] http://openjdk.java.net/legal/assembly-exception.html
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
+ *******************************************************************************/
+
+#include "omrport.h"
+
+
+#define MAX_UNIX_SIGNAL_TYPES  _NSIG
+
+#define __USE_GNU 1
+#include <dlfcn.h>
+#undef __USE_GNU
+
+typedef struct OMRPlatformSignalInfo {
+	ucontext_t *context;
+	Dl_info dl_info;
+} OMRPlatformSignalInfo;
+
+typedef struct OMRUnixSignalInfo {
+	struct OMRPlatformSignalInfo platformSignalInfo;
+	uint32_t portLibrarySignalType;
+	void *handlerAddress;
+	void *handlerAddress2;
+	siginfo_t *sigInfo;
+} OMRUnixSignalInfo;
+
+uint32_t infoForFPR(struct OMRPortLibrary *portLibrary, struct OMRUnixSignalInfo *info, int32_t index, const char **name, void **value);
+uint32_t infoForGPR(struct OMRPortLibrary *portLibrary, struct OMRUnixSignalInfo *info, int32_t index, const char **name, void **value);
+uint32_t infoForModule(struct OMRPortLibrary *portLibrary, struct OMRUnixSignalInfo *info, int32_t index, const char **name, void **value);
+uint32_t infoForControl(struct OMRPortLibrary *portLibrary, struct OMRUnixSignalInfo *info, int32_t index, const char **name, void **value);
+uint32_t infoForSignal(struct OMRPortLibrary *portLibrary, struct OMRUnixSignalInfo *info, int32_t index, const char **name, void **value);
+void fillInUnixSignalInfo(struct OMRPortLibrary *portLibrary, void *contextInfo, struct OMRUnixSignalInfo *signalInfo);
+
+

util/omrutil/gettimebase.c

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2014, 2018 IBM Corp. and others
+ * Copyright (c) 2014, 2019 IBM Corp. and others
  *
  * This program and the accompanying materials are made available under
  * the terms of the Eclipse Public License 2.0 which accompanies this
@@ -26,7 +26,7 @@
 #include "omrcomp.h"
 #include "omrutilbase.h"
 
-#if defined(LINUX) && defined(OMR_ARCH_ARM)
+#if defined(LINUX) && (defined(OMR_ARCH_ARM) || defined(OMR_ARCH_RISCV))
 #include <time.h>
 #endif
 
@@ -81,7 +81,7 @@ getTimebase(void)
 	asm("stck %0" : "=m" (tsc));
 #elif defined(J9ZOS390)
 	__stck(&tsc);
-#elif defined(LINUX) && defined(OMR_ARCH_ARM)
+#elif defined(LINUX) && (defined(OMR_ARCH_ARM) || defined(OMR_ARCH_RISCV))
 	/* For now, use the system nano clock */
 #define J9TIME_NANOSECONDS_PER_SECOND	J9CONST_U64(1000000000)
 	struct timespec ts;