forked from beehive-lab/Maxine-VM
/
platform.c
142 lines (131 loc) · 3.68 KB
/
platform.c
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/*
* Copyright (c) 2017, APT Group, School of Computer Science,
* The University of Manchester. All rights reserved.
* Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <unistd.h>
#include "word.h"
#include "isa.h"
#include "jni.h"
#include <string.h>
#include <stdlib.h>
JNIEXPORT void JNICALL
JVM_OnLoad(JavaVM *vm, char *options, void *arg)
{
c_initialize();
}
/*
* ATTENTION: return value must correspond to an OS enum value.
*/
JNIEXPORT jobject JNICALL
Java_com_sun_max_platform_Platform_nativeGetOS(JNIEnv *env, jclass c)
{
#if os_DARWIN
return (*env)->NewStringUTF(env, "DARWIN");
#elif os_LINUX
return (*env)->NewStringUTF(env, "LINUX");
#elif os_SOLARIS
return (*env)->NewStringUTF(env, "SOLARIS");
#elif os_WINDOWS
return (*env)->NewStringUTF(env, "WINDOWS");
#elif os_MAXVE
return (*env)->NewStringUTF(env, "MAXVE");
#else
# error
#endif
}
JNIEXPORT jint JNICALL
Java_com_sun_max_platform_Platform_nativeGetPageSize(JNIEnv *env, jclass c) {
return (jint) sysconf(_SC_PAGESIZE);
}
JNIEXPORT jint JNICALL
Java_com_sun_max_platform_Platform_nativeHasIDiv(JNIEnv *env, jclass c) {
#ifdef arm
FILE *cpuinfo = fopen("/proc/cpuinfo", "rb");
char *arg = 0;
size_t size = 0;
while(getdelim(&arg, &size, 0, cpuinfo) != -1) {
if (strstr(arg, "idiva") != 0) {
return (jint) 1;
}
}
free(arg);
fclose(cpuinfo);
#else
return (jint) 1;
#endif
return (jint) 0;
}
/*
* ATTENTION: return value must correspond to an ISA enum value.
*/
JNIEXPORT jobject JNICALL
Java_com_sun_max_platform_Platform_nativeGetISA(JNIEnv *env, jclass c)
{
#if isa_AMD64
return (*env)->NewStringUTF(env, "AMD64");
#elif isa_IA32
return (*env)->NewStringUTF(env, "IA32");
#elif isa_POWER
return (*env)->NewStringUTF(env, "PPC");
#elif isa_SPARC
return (*env)->NewStringUTF(env, "SPARC");
#elif isa_ARM
return (*env)->NewStringUTF(env, "ARM");
#elif isa_AARCH64
return (*env)->NewStringUTF(env, "Aarch64");
#elif isa_RISCV64
return (*env)->NewStringUTF(env, "Riscv64");
#else
# error
#endif
}
JNIEXPORT jboolean JNICALL
Java_com_sun_max_platform_Platform_nativeIsBigEndian(JNIEnv *env, jclass c)
{
return word_BIG_ENDIAN;
}
JNIEXPORT jint JNICALL
Java_com_sun_max_platform_Platform_nativeGetWordWidth(JNIEnv *env, jclass c)
{
return word_64_BITS ? 64 : 32;
}
#if os_DARWIN || os_LINUX || os_WINDOWS
#include <signal.h>
#endif
JNIEXPORT jint JNICALL
Java_com_sun_max_platform_Platform_nativeNumberOfSignals(JNIEnv *env, jclass c)
{
#if os_DARWIN || os_LINUX || os_WINDOWS
return NSIG;
#elif os_SOLARIS
return SIGRTMAX;
#elif os_MAXVE
return 0;
#else
# error
#endif
}
JNIEXPORT jstring JNICALL
Java_com_sun_max_platform_Platform_nativeJniHeaderFilePath(JNIEnv *env, jclass c)
{
#ifndef JNI_H_PATH
#error JNI_H_PATH should be defined
#endif
return (*env)->NewStringUTF(env, JNI_H_PATH);
}