diff options
Diffstat (limited to 'libjava/gnu/classpath/jdwp/natVMMethod.cc')
| -rw-r--r-- | libjava/gnu/classpath/jdwp/natVMMethod.cc | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/libjava/gnu/classpath/jdwp/natVMMethod.cc b/libjava/gnu/classpath/jdwp/natVMMethod.cc new file mode 100644 index 000000000..1cea54dae --- /dev/null +++ b/libjava/gnu/classpath/jdwp/natVMMethod.cc @@ -0,0 +1,191 @@ +// natVMMethod.cc -- native support for VMMethod + +/* Copyright (C) 2006, 2007 Free Software Foundation + + This file is part of libgcj. + +This software is copyrighted work licensed under the terms of the +Libgcj License. Please consult the file "LIBGCJ_LICENSE" for +details. */ + +#include <config.h> +#include <gcj/cni.h> +#include <java-interp.h> +#include <jvmti.h> +#include "jvmti-int.h" + +#include <java/lang/reflect/Modifier.h> +#include <gnu/classpath/jdwp/VMMethod.h> +#include <gnu/classpath/jdwp/exception/AbsentInformationException.h> +#include <gnu/classpath/jdwp/exception/InvalidMethodException.h> +#include <gnu/classpath/jdwp/exception/JdwpInternalErrorException.h> +#include <gnu/classpath/jdwp/util/LineTable.h> +#include <gnu/classpath/jdwp/util/VariableTable.h> + +using namespace java::lang; + +#define CHECK_INTERP_CLASS() \ +do \ + { \ + if (!_Jv_IsInterpretedClass (getDeclaringClass ())) \ + { \ + ::java::lang::String *msg = JvNewStringLatin1 ("native class"); \ + throw new exception::JdwpInternalErrorException (msg); \ + } \ + } \ +while (0) + +jstring +gnu::classpath::jdwp::VMMethod::getName () +{ + jvmtiEnv *env = _Jv_GetJDWP_JVMTIEnv (); + jmethodID method = reinterpret_cast<jmethodID> (_methodId); + char *name; + env->GetMethodName (method, &name, NULL, NULL); + jstring string = JvNewStringUTF (name); + env->Deallocate (reinterpret_cast<unsigned char *> (name)); + return string; +} + +jstring +gnu::classpath::jdwp::VMMethod::getSignature () +{ + jvmtiEnv *env = _Jv_GetJDWP_JVMTIEnv (); + jmethodID method = reinterpret_cast<jmethodID> (_methodId); + char *signature; + env->GetMethodName (method, NULL, &signature, NULL); + jstring string = JvNewStringUTF (signature); + env->Deallocate (reinterpret_cast<unsigned char *> (signature)); + return string; +} + +jint +gnu::classpath::jdwp::VMMethod::getModifiers () +{ + jvmtiEnv *env = _Jv_GetJDWP_JVMTIEnv (); + jmethodID method = reinterpret_cast<jmethodID> (_methodId); + jint flags; + env->GetMethodModifiers (method, &flags); + + // If this class is compiled, as far as JDWP is concerned, its methods are + // native. This will set the native flag for these methods. + if (!_Jv_IsInterpretedClass (getDeclaringClass ())) + flags |= ::java::lang::reflect::Modifier::NATIVE; + + return flags; +} + +gnu::classpath::jdwp::util::LineTable * +gnu::classpath::jdwp::VMMethod::getLineTable () +{ + CHECK_INTERP_CLASS (); + + jmethodID desired_method = reinterpret_cast<jmethodID> (_methodId); + + _Jv_MethodBase *theMethod + = _Jv_FindInterpreterMethod (getDeclaringClass (), desired_method); + + if (theMethod == NULL) + { + // this should not happen + ::java::lang::String *msg + = JvNewStringLatin1 ("could not find method in class"); + throw new exception::JdwpInternalErrorException (msg); + } + + if (::java::lang::reflect::Modifier::isNative (desired_method->accflags)) + { + jintArray lines = JvNewIntArray (0); + jlongArray indices = JvNewLongArray (0); + return new util::LineTable (-1, -1, lines, indices); + } + + // get the linetable + _Jv_InterpMethod *imeth = reinterpret_cast<_Jv_InterpMethod *> (theMethod); + jlong start; + jlong end; + jintArray lines; + jlongArray indices; + imeth->get_line_table (start, end, lines, indices); + return new util::LineTable (start, end, lines, indices); +} + + +gnu::classpath::jdwp::util::VariableTable* +gnu::classpath::jdwp::VMMethod::getVariableTable () +{ + using namespace gnu::classpath::jdwp::util; + + jvmtiEnv *env = _Jv_GetJDWP_JVMTIEnv (); + + CHECK_INTERP_CLASS (); + + jmethodID meth = reinterpret_cast<jmethodID> (_methodId); + jvmtiLocalVariableEntry *var_table; + jint num_slots, args_len; + + jvmtiError jerr = env->GetLocalVariableTable (meth, &num_slots, &var_table); + + if (jerr != JVMTI_ERROR_NONE) + goto error; + + jerr = env->GetArgumentsSize (meth, &args_len); + + if (jerr != JVMTI_ERROR_NONE) + { + error: + using namespace gnu::classpath::jdwp::exception; + char *error; + env->GetErrorName (jerr, &error); + String *msg = JvNewStringUTF (error); + env->Deallocate (reinterpret_cast<unsigned char *> (error)); + + if (jerr == JVMTI_ERROR_NATIVE_METHOD) + throw new AbsentInformationException (msg); + else if (jerr == JVMTI_ERROR_INVALID_METHODID) + throw new InvalidMethodException (_methodId); + else + throw new JdwpInternalErrorException (msg); + } + + jlongArray start_pcs = JvNewLongArray (num_slots); + jlong *start_pcs_ptr = elements (start_pcs); + jintArray lengths = JvNewIntArray (num_slots); + jint *lengths_ptr = elements (lengths); + jintArray slots = JvNewIntArray (num_slots); + jint *slots_ptr = elements (slots); + JArray<String *> *names = reinterpret_cast<JArray<String *> *> + (JvNewObjectArray (num_slots, + &String::class$, NULL)); + jstring *names_ptr = elements (names); + JArray<String *> *signatures = reinterpret_cast<JArray<String *> *> + (JvNewObjectArray (num_slots, + &String::class$, NULL)); + jstring *signatures_ptr = elements (signatures); + + // Get the information out of the JVMTI strucutre and Deallocate the strings. + for (int i = 0; i < num_slots; i++) + { + start_pcs_ptr[i] = var_table[i].start_location; + lengths_ptr[i] = var_table[i].length; + slots_ptr[i] = var_table[i].slot; + names_ptr[i] = JvNewStringUTF (var_table[i].name); + env->Deallocate (reinterpret_cast<unsigned char *> + (var_table[i].name)); + signatures_ptr[i] = JvNewStringUTF (var_table[i].signature); + env->Deallocate (reinterpret_cast<unsigned char *> + (var_table[i].signature)); + env->Deallocate (reinterpret_cast<unsigned char *> + (var_table[i].generic_signature)); + } + + // Now Deallocate the table since it's strings have already been freed. + env->Deallocate (reinterpret_cast<unsigned char *> (var_table)); + + // Create the new JDWP VariableTable to return with the now filled arrays. + VariableTable* jdwp_vtable = new VariableTable (args_len, num_slots, + start_pcs, names, signatures, + lengths, slots); + + return jdwp_vtable; +} |