// interpret.cc - Code for the interpreter
-/* Copyright (C) 1999, 2000, 2001 , 2002 Free Software Foundation
+/* Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation
This file is part of libgcj.
/* Author: Kresten Krab Thorup <krab@gnu.org> */
#include <config.h>
+#include <platform.h>
#pragma implementation "java-interp.h"
#include <jvm.h>
#include <java-cpool.h>
#include <java-interp.h>
-// #include <java/lang/fdlibm.h>
#include <java/lang/System.h>
#include <java/lang/String.h>
#include <java/lang/Integer.h>
#include <java/lang/StringBuffer.h>
#include <java/lang/Class.h>
#include <java/lang/reflect/Modifier.h>
-#include <java/lang/ClassCastException.h>
-#include <java/lang/VirtualMachineError.h>
#include <java/lang/InternalError.h>
#include <java/lang/NullPointerException.h>
#include <java/lang/ArithmeticException.h>
#include <java/lang/IncompatibleClassChangeError.h>
+#include <java/lang/InstantiationException.h>
+#include <java/lang/Thread.h>
#include <java-insns.h>
#include <java-signal.h>
+#include <java/lang/ClassFormatError.h>
+#include <execution.h>
+#include <java/lang/reflect/Modifier.h>
#ifdef INTERPRETER
+// Execution engine for interpreted code.
+_Jv_InterpreterEngine _Jv_soleInterpreterEngine;
+
#include <stdlib.h>
using namespace gcj;
-static void throw_internal_error (char *msg)
+static void throw_internal_error (const char *msg)
__attribute__ ((__noreturn__));
static void throw_incompatible_class_change_error (jstring msg)
__attribute__ ((__noreturn__));
-#ifndef HANDLE_SEGV
static void throw_null_pointer_exception ()
__attribute__ ((__noreturn__));
+
+static void throw_class_format_error (jstring msg)
+ __attribute__ ((__noreturn__));
+static void throw_class_format_error (const char *msg)
+ __attribute__ ((__noreturn__));
+
+#ifdef DIRECT_THREADED
+// Lock to ensure that methods are not compiled concurrently.
+// We could use a finer-grained lock here, however it is not safe to use
+// the Class monitor as user code in another thread could hold it.
+static _Jv_Mutex_t compile_mutex;
+
+void
+_Jv_InitInterpreter()
+{
+ _Jv_MutexInit (&compile_mutex);
+}
+#else
+void _Jv_InitInterpreter() {}
#endif
extern "C" double __ieee754_fmod (double,double);
{
sp[top-(n+x)-i] = sp[top-i];
}
-
-};
+}
// Used to convert from floating types to integral types.
template<typename TO, typename FROM>
| (((jint)(loc[3])) << 0);
}
+#define SAVE_PC() frame_desc.pc = pc
+
+// We used to define this conditionally, depending on HANDLE_SEGV.
+// However, that runs into a problem if a chunk in low memory is
+// mapped and we try to look at a field near the end of a large
+// object. See PR 26858 for details. It is, most likely, relatively
+// inexpensive to simply do this check always.
+#define NULLCHECK(X) \
+ do { SAVE_PC(); if ((X)==NULL) throw_null_pointer_exception (); } while (0)
+// Note that we can still conditionally define NULLARRAYCHECK, since
+// we know that all uses of an array will first reference the length
+// field, which is first -- and thus will trigger a SEGV.
#ifdef HANDLE_SEGV
-#define NULLCHECK(X)
-#define NULLARRAYCHECK(X) do { SAVE_PC; } while (0)
+#define NULLARRAYCHECK(X) SAVE_PC()
#else
-#define NULLCHECK(X) \
- do { if ((X)==NULL) throw_null_pointer_exception (); } while (0)
#define NULLARRAYCHECK(X) \
- do { if ((X)==NULL) { SAVE_PC; throw_null_pointer_exception (); } } while (0)
+ do { SAVE_PC(); if ((X)==NULL) { throw_null_pointer_exception (); } } while (0)
#endif
#define ARRAYBOUNDSCHECK(array, index) \
} \
while (0)
-// this method starts the actual running of the method. It is inlined
-// in three different variants in the static methods run_normal,
-// run_sync_object and run_sync_class (see below). Those static methods
-// are installed directly in the stub for this method (by
-// _Jv_InterpMethod::ncode, in resolve.cc).
-
-inline jobject
-_Jv_InterpMethod::run (ffi_cif* cif,
- void *retp,
- ffi_raw *args,
- _Jv_InterpMethodInvocation *inv)
+void
+_Jv_InterpMethod::run_normal (ffi_cif *,
+ void* ret,
+ ffi_raw * args,
+ void* __this)
{
- inv->running = this;
- inv->pc = bytecode ();
- inv->sp = inv->stack_base ();
- _Jv_word *locals = inv->local_base ();
-
- /* Go straight at it! the ffi raw format matches the internal
- stack representation exactly. At least, that's the idea.
- */
- memcpy ((void*) locals, (void*) args, args_raw_size);
-
- next_segment:
-
- jobject ex = NULL;
-
- try
- {
- continue1 (inv);
- }
- catch (java::lang::Throwable *ex2)
- {
- ex = ex2;
- }
-
- if (ex == 0) // no exception...
- {
- /* define sp locally, so the POP? macros will pick it up */
- _Jv_word *sp = inv->sp;
- int rtype = cif->rtype->type;
-
- if (rtype == FFI_TYPE_POINTER)
- {
- jobject r = POPA();
- *(jobject*) retp = r;
- return 0;
- }
- else if (rtype == FFI_TYPE_SINT32)
- {
- jint r = POPI();
- *(jint*)retp = r;
- return 0;
- }
- else if (rtype == FFI_TYPE_VOID)
- {
- return 0;
- }
- else switch (rtype)
- {
- case FFI_TYPE_FLOAT:
- {
- jfloat r = POPF();
- *(jfloat*)retp = r;
- return 0;
- }
-
- case FFI_TYPE_DOUBLE:
- {
- jdouble r = POPD();
- *(jdouble*)retp = r;
- return 0;
- }
+ _Jv_InterpMethod *_this = (_Jv_InterpMethod *) __this;
+ run (ret, args, _this);
+}
- case FFI_TYPE_UINT8:
- case FFI_TYPE_UINT16:
- case FFI_TYPE_UINT32:
- case FFI_TYPE_SINT8:
- case FFI_TYPE_SINT16:
- {
- jint r = POPI();
- *(jint*)retp = r;
- return 0;
- }
-
- case FFI_TYPE_SINT64:
- {
- jlong r = POPL();
- *(jlong*)retp = r;
- return 0;
- }
-
- default:
- throw_internal_error ("unknown return type");
- }
- }
+void
+_Jv_InterpMethod::run_synch_object (ffi_cif *,
+ void* ret,
+ ffi_raw * args,
+ void* __this)
+{
+ _Jv_InterpMethod *_this = (_Jv_InterpMethod *) __this;
- /** handle an exception */
- if ( find_exception (ex, inv) )
- goto next_segment;
+ jobject rcv = (jobject) args[0].ptr;
+ JvSynchronize mutex (rcv);
- return ex;
+ run (ret, args, _this);
}
-#define SAVE_PC inv->pc = pc
-
-bool _Jv_InterpMethod::find_exception (jobject ex,
- _Jv_InterpMethodInvocation *inv)
+void
+_Jv_InterpMethod::run_class (ffi_cif *,
+ void* ret,
+ ffi_raw * args,
+ void* __this)
{
- // We subtract one because the PC was incremented before it was
- // saved.
- int logical_pc = inv->pc - 1 - bytecode ();
- _Jv_InterpException *exc = exceptions ();
- jclass exc_class = ex->getClass ();
-
- for (int i = 0; i < exc_count; i++)
- {
- if (exc[i].start_pc <= logical_pc && logical_pc < exc[i].end_pc)
- {
- jclass handler;
-
- if (exc[i].handler_type != 0)
- handler = (_Jv_ResolvePoolEntry (defining_class,
- exc[i].handler_type)).clazz;
- else
- handler = NULL;
-
- if (handler==NULL || handler->isAssignableFrom (exc_class))
- {
- inv->pc = bytecode () + exc[i].handler_pc;
- inv->sp = inv->stack_base (); // reset stack
- (inv->sp++)->o = ex; // push exception
- return true;
- }
- }
- }
- return false;
+ _Jv_InterpMethod *_this = (_Jv_InterpMethod *) __this;
+ _Jv_InitClass (_this->defining_class);
+ run (ret, args, _this);
}
-void _Jv_InterpMethod::run_normal (ffi_cif* cif,
+void
+_Jv_InterpMethod::run_synch_class (ffi_cif *,
void* ret,
ffi_raw * args,
void* __this)
{
- _Jv_InterpMethod* _this = (_Jv_InterpMethod*)__this;
+ _Jv_InterpMethod *_this = (_Jv_InterpMethod *) __this;
- // we do the alloca of the method invocation here, to allow the method
- // "run" ro be inlined. Otherwise gcc will ignore the inline directive.
- int storage_size = _this->max_stack+_this->max_locals;
- _Jv_InterpMethodInvocation* inv = (_Jv_InterpMethodInvocation*)
- __builtin_alloca (sizeof (_Jv_InterpMethodInvocation)
- + storage_size * sizeof (_Jv_word));
+ jclass sync = _this->defining_class;
+ _Jv_InitClass (sync);
+ JvSynchronize mutex (sync);
- jobject ex = _this->run (cif, ret, args, inv);
- if (ex != 0) throw static_cast<jthrowable>(ex);
+ run (ret, args, _this);
}
-void _Jv_InterpMethod::run_synch_object (ffi_cif* cif,
- void* ret,
- ffi_raw * args,
- void* __this)
+#ifdef DIRECT_THREADED
+// "Compile" a method by turning it from bytecode to direct-threaded
+// code.
+void
+_Jv_InterpMethod::compile (const void * const *insn_targets)
{
- _Jv_InterpMethod* _this = (_Jv_InterpMethod*)__this;
- jobject rcv = (jobject)args[0].ptr;
+ insn_slot *insns = NULL;
+ int next = 0;
+ unsigned char *codestart = bytecode ();
+ unsigned char *end = codestart + code_length;
+ _Jv_word *pool_data = defining_class->constants.data;
- int storage_size = _this->max_stack+_this->max_locals;
- _Jv_InterpMethodInvocation* inv = (_Jv_InterpMethodInvocation*)
- __builtin_alloca (sizeof (_Jv_InterpMethodInvocation)
- + storage_size * sizeof (_Jv_word));
+#define SET_ONE(Field, Value) \
+ do \
+ { \
+ if (first_pass) \
+ ++next; \
+ else \
+ insns[next++].Field = Value; \
+ } \
+ while (0)
- _Jv_MonitorEnter (rcv);
- jobject ex = _this->run (cif, ret, args, inv);
- _Jv_MonitorExit (rcv);
+#define SET_INSN(Value) SET_ONE (insn, (void *) Value)
+#define SET_INT(Value) SET_ONE (int_val, Value)
+#define SET_DATUM(Value) SET_ONE (datum, Value)
- if (ex != 0) throw static_cast<jthrowable>(ex);
-}
+ // Map from bytecode PC to slot in INSNS.
+ int *pc_mapping = (int *) __builtin_alloca (sizeof (int) * code_length);
+ for (int i = 0; i < code_length; ++i)
+ pc_mapping[i] = -1;
-void _Jv_InterpMethod::run_synch_class (ffi_cif* cif,
- void* ret,
- ffi_raw * args,
- void* __this)
-{
- _Jv_InterpMethod* _this = (_Jv_InterpMethod*)__this;
- jclass sync = _this->defining_class;
+ for (int i = 0; i < 2; ++i)
+ {
+ jboolean first_pass = i == 0;
+
+ if (! first_pass)
+ {
+ insns = (insn_slot *) _Jv_AllocBytes (sizeof (insn_slot) * next);
+ number_insn_slots = next;
+ next = 0;
+ }
- int storage_size = _this->max_stack+_this->max_locals;
- _Jv_InterpMethodInvocation* inv = (_Jv_InterpMethodInvocation*)
- __builtin_alloca (sizeof (_Jv_InterpMethodInvocation)
- + storage_size * sizeof (_Jv_word));
+ unsigned char *pc = codestart;
+ while (pc < end)
+ {
+ int base_pc_val = pc - codestart;
+ if (first_pass)
+ pc_mapping[base_pc_val] = next;
- _Jv_MonitorEnter (sync);
- jobject ex = _this->run (cif, ret, args, inv);
- _Jv_MonitorExit (sync);
+ java_opcode opcode = (java_opcode) *pc++;
+ // Just elide NOPs.
+ if (opcode == op_nop)
+ continue;
+ SET_INSN (insn_targets[opcode]);
- if (ex != 0) throw static_cast<jthrowable>(ex);
-}
+ switch (opcode)
+ {
+ case op_nop:
+ case op_aconst_null:
+ case op_iconst_m1:
+ case op_iconst_0:
+ case op_iconst_1:
+ case op_iconst_2:
+ case op_iconst_3:
+ case op_iconst_4:
+ case op_iconst_5:
+ case op_lconst_0:
+ case op_lconst_1:
+ case op_fconst_0:
+ case op_fconst_1:
+ case op_fconst_2:
+ case op_dconst_0:
+ case op_dconst_1:
+ case op_iload_0:
+ case op_iload_1:
+ case op_iload_2:
+ case op_iload_3:
+ case op_lload_0:
+ case op_lload_1:
+ case op_lload_2:
+ case op_lload_3:
+ case op_fload_0:
+ case op_fload_1:
+ case op_fload_2:
+ case op_fload_3:
+ case op_dload_0:
+ case op_dload_1:
+ case op_dload_2:
+ case op_dload_3:
+ case op_aload_0:
+ case op_aload_1:
+ case op_aload_2:
+ case op_aload_3:
+ case op_iaload:
+ case op_laload:
+ case op_faload:
+ case op_daload:
+ case op_aaload:
+ case op_baload:
+ case op_caload:
+ case op_saload:
+ case op_istore_0:
+ case op_istore_1:
+ case op_istore_2:
+ case op_istore_3:
+ case op_lstore_0:
+ case op_lstore_1:
+ case op_lstore_2:
+ case op_lstore_3:
+ case op_fstore_0:
+ case op_fstore_1:
+ case op_fstore_2:
+ case op_fstore_3:
+ case op_dstore_0:
+ case op_dstore_1:
+ case op_dstore_2:
+ case op_dstore_3:
+ case op_astore_0:
+ case op_astore_1:
+ case op_astore_2:
+ case op_astore_3:
+ case op_iastore:
+ case op_lastore:
+ case op_fastore:
+ case op_dastore:
+ case op_aastore:
+ case op_bastore:
+ case op_castore:
+ case op_sastore:
+ case op_pop:
+ case op_pop2:
+ case op_dup:
+ case op_dup_x1:
+ case op_dup_x2:
+ case op_dup2:
+ case op_dup2_x1:
+ case op_dup2_x2:
+ case op_swap:
+ case op_iadd:
+ case op_isub:
+ case op_imul:
+ case op_idiv:
+ case op_irem:
+ case op_ishl:
+ case op_ishr:
+ case op_iushr:
+ case op_iand:
+ case op_ior:
+ case op_ixor:
+ case op_ladd:
+ case op_lsub:
+ case op_lmul:
+ case op_ldiv:
+ case op_lrem:
+ case op_lshl:
+ case op_lshr:
+ case op_lushr:
+ case op_land:
+ case op_lor:
+ case op_lxor:
+ case op_fadd:
+ case op_fsub:
+ case op_fmul:
+ case op_fdiv:
+ case op_frem:
+ case op_dadd:
+ case op_dsub:
+ case op_dmul:
+ case op_ddiv:
+ case op_drem:
+ case op_ineg:
+ case op_i2b:
+ case op_i2c:
+ case op_i2s:
+ case op_lneg:
+ case op_fneg:
+ case op_dneg:
+ case op_i2l:
+ case op_i2f:
+ case op_i2d:
+ case op_l2i:
+ case op_l2f:
+ case op_l2d:
+ case op_f2i:
+ case op_f2l:
+ case op_f2d:
+ case op_d2i:
+ case op_d2l:
+ case op_d2f:
+ case op_lcmp:
+ case op_fcmpl:
+ case op_fcmpg:
+ case op_dcmpl:
+ case op_dcmpg:
+ case op_monitorenter:
+ case op_monitorexit:
+ case op_ireturn:
+ case op_lreturn:
+ case op_freturn:
+ case op_dreturn:
+ case op_areturn:
+ case op_return:
+ case op_athrow:
+ case op_arraylength:
+ // No argument, nothing else to do.
+ break;
+
+ case op_bipush:
+ SET_INT (get1s (pc));
+ ++pc;
+ break;
+
+ case op_ldc:
+ {
+ int index = get1u (pc);
+ ++pc;
+ // For an unresolved class we want to delay resolution
+ // until execution.
+ if (defining_class->constants.tags[index] == JV_CONSTANT_Class)
+ {
+ --next;
+ SET_INSN (insn_targets[int (op_jsr_w) + 1]);
+ SET_INT (index);
+ }
+ else
+ SET_DATUM (pool_data[index].o);
+ }
+ break;
+
+ case op_ret:
+ case op_iload:
+ case op_lload:
+ case op_fload:
+ case op_dload:
+ case op_aload:
+ case op_istore:
+ case op_lstore:
+ case op_fstore:
+ case op_dstore:
+ case op_astore:
+ case op_newarray:
+ SET_INT (get1u (pc));
+ ++pc;
+ break;
+
+ case op_iinc:
+ SET_INT (get1u (pc));
+ SET_INT (get1s (pc + 1));
+ pc += 2;
+ break;
+
+ case op_ldc_w:
+ {
+ int index = get2u (pc);
+ pc += 2;
+ // For an unresolved class we want to delay resolution
+ // until execution.
+ if (defining_class->constants.tags[index] == JV_CONSTANT_Class)
+ {
+ --next;
+ SET_INSN (insn_targets[int (op_jsr_w) + 1]);
+ SET_INT (index);
+ }
+ else
+ SET_DATUM (pool_data[index].o);
+ }
+ break;
+
+ case op_ldc2_w:
+ {
+ int index = get2u (pc);
+ pc += 2;
+ SET_DATUM (&pool_data[index]);
+ }
+ break;
+
+ case op_sipush:
+ SET_INT (get2s (pc));
+ pc += 2;
+ break;
+
+ case op_new:
+ case op_getstatic:
+ case op_getfield:
+ case op_putfield:
+ case op_putstatic:
+ case op_anewarray:
+ case op_instanceof:
+ case op_checkcast:
+ case op_invokespecial:
+ case op_invokestatic:
+ case op_invokevirtual:
+ SET_INT (get2u (pc));
+ pc += 2;
+ break;
+
+ case op_multianewarray:
+ SET_INT (get2u (pc));
+ SET_INT (get1u (pc + 2));
+ pc += 3;
+ break;
+
+ case op_jsr:
+ case op_ifeq:
+ case op_ifne:
+ case op_iflt:
+ case op_ifge:
+ case op_ifgt:
+ case op_ifle:
+ case op_if_icmpeq:
+ case op_if_icmpne:
+ case op_if_icmplt:
+ case op_if_icmpge:
+ case op_if_icmpgt:
+ case op_if_icmple:
+ case op_if_acmpeq:
+ case op_if_acmpne:
+ case op_ifnull:
+ case op_ifnonnull:
+ case op_goto:
+ {
+ int offset = get2s (pc);
+ pc += 2;
+
+ int new_pc = base_pc_val + offset;
+
+ bool orig_was_goto = opcode == op_goto;
+
+ // Thread jumps. We limit the loop count; this lets
+ // us avoid infinite loops if the bytecode contains
+ // such. `10' is arbitrary.
+ int count = 10;
+ while (codestart[new_pc] == op_goto && count-- > 0)
+ new_pc += get2s (&codestart[new_pc + 1]);
+
+ // If the jump takes us to a `return' instruction and
+ // the original branch was an unconditional goto, then
+ // we hoist the return.
+ opcode = (java_opcode) codestart[new_pc];
+ if (orig_was_goto
+ && (opcode == op_ireturn || opcode == op_lreturn
+ || opcode == op_freturn || opcode == op_dreturn
+ || opcode == op_areturn || opcode == op_return))
+ {
+ --next;
+ SET_INSN (insn_targets[opcode]);
+ }
+ else
+ SET_DATUM (&insns[pc_mapping[new_pc]]);
+ }
+ break;
+
+ case op_tableswitch:
+ {
+ while ((pc - codestart) % 4 != 0)
+ ++pc;
+
+ jint def = get4 (pc);
+ SET_DATUM (&insns[pc_mapping[base_pc_val + def]]);
+ pc += 4;
+
+ int low = get4 (pc);
+ SET_INT (low);
+ pc += 4;
+ int high = get4 (pc);
+ SET_INT (high);
+ pc += 4;
+
+ for (int i = low; i <= high; ++i)
+ {
+ SET_DATUM (&insns[pc_mapping[base_pc_val + get4 (pc)]]);
+ pc += 4;
+ }
+ }
+ break;
+
+ case op_lookupswitch:
+ {
+ while ((pc - codestart) % 4 != 0)
+ ++pc;
+
+ jint def = get4 (pc);
+ SET_DATUM (&insns[pc_mapping[base_pc_val + def]]);
+ pc += 4;
+
+ jint npairs = get4 (pc);
+ pc += 4;
+ SET_INT (npairs);
+
+ while (npairs-- > 0)
+ {
+ jint match = get4 (pc);
+ jint offset = get4 (pc + 4);
+ SET_INT (match);
+ SET_DATUM (&insns[pc_mapping[base_pc_val + offset]]);
+ pc += 8;
+ }
+ }
+ break;
+
+ case op_invokeinterface:
+ {
+ jint index = get2u (pc);
+ pc += 2;
+ // We ignore the next two bytes.
+ pc += 2;
+ SET_INT (index);
+ }
+ break;
+
+ case op_wide:
+ {
+ opcode = (java_opcode) get1u (pc);
+ pc += 1;
+ jint val = get2u (pc);
+ pc += 2;
+
+ // We implement narrow and wide instructions using the
+ // same code in the interpreter. So we rewrite the
+ // instruction slot here.
+ if (! first_pass)
+ insns[next - 1].insn = (void *) insn_targets[opcode];
+ SET_INT (val);
+
+ if (opcode == op_iinc)
+ {
+ SET_INT (get2s (pc));
+ pc += 2;
+ }
+ }
+ break;
-/*
- This proceeds execution, as designated in "inv". If an exception
- happens, then it is simply thrown, and handled in Java. Thus, the pc
- needs to be stored in the inv->pc at all times, so we can figure
- out which handler (if any) to invoke.
+ case op_jsr_w:
+ case op_goto_w:
+ {
+ jint offset = get4 (pc);
+ pc += 4;
+ SET_DATUM (&insns[pc_mapping[base_pc_val + offset]]);
+ }
+ break;
+
+ // Some "can't happen" cases that we include for
+ // error-checking purposes.
+ case op_putfield_1:
+ case op_putfield_2:
+ case op_putfield_4:
+ case op_putfield_8:
+ case op_putfield_a:
+ case op_putstatic_1:
+ case op_putstatic_2:
+ case op_putstatic_4:
+ case op_putstatic_8:
+ case op_putstatic_a:
+ case op_getfield_1:
+ case op_getfield_2s:
+ case op_getfield_2u:
+ case op_getfield_4:
+ case op_getfield_8:
+ case op_getfield_a:
+ case op_getstatic_1:
+ case op_getstatic_2s:
+ case op_getstatic_2u:
+ case op_getstatic_4:
+ case op_getstatic_8:
+ case op_getstatic_a:
+ default:
+ // Fail somehow.
+ break;
+ }
+ }
+ }
- One design issue, which I have not completely considered, is if it
- should be possible to have interpreted classes linked in! Seldom used
- (or non-critical) classes could reasonably be interpreted.
-*/
+ // Now update exceptions.
+ _Jv_InterpException *exc = exceptions ();
+ for (int i = 0; i < exc_count; ++i)
+ {
+ exc[i].start_pc.p = &insns[pc_mapping[exc[i].start_pc.i]];
+ exc[i].end_pc.p = &insns[pc_mapping[exc[i].end_pc.i]];
+ exc[i].handler_pc.p = &insns[pc_mapping[exc[i].handler_pc.i]];
+ // FIXME: resolve_pool_entry can throw - we shouldn't be doing this
+ // during compilation.
+ jclass handler
+ = (_Jv_Linker::resolve_pool_entry (defining_class,
+ exc[i].handler_type.i)).clazz;
+ exc[i].handler_type.p = handler;
+ }
+ // Translate entries in the LineNumberTable from bytecode PC's to direct
+ // threaded interpreter instruction values.
+ for (int i = 0; i < line_table_len; i++)
+ {
+ int byte_pc = line_table[i].bytecode_pc;
+ // It isn't worth throwing an exception if this table is
+ // corrupted, but at the same time we don't want a crash.
+ if (byte_pc < 0 || byte_pc >= code_length)
+ byte_pc = 0;
+ line_table[i].pc = &insns[pc_mapping[byte_pc]];
+ }
+
+ prepared = insns;
+}
+#endif /* DIRECT_THREADED */
-void _Jv_InterpMethod::continue1 (_Jv_InterpMethodInvocation *inv)
+/* Run the given method.
+ When args is NULL, don't run anything -- just compile it. */
+void
+_Jv_InterpMethod::run (void *retp, ffi_raw *args, _Jv_InterpMethod *meth)
{
using namespace java::lang::reflect;
- _Jv_word *sp = inv->sp;
- unsigned char *pc = inv->pc;
- _Jv_word *locals = inv->local_base ();
+ // FRAME_DESC registers this particular invocation as the top-most
+ // interpreter frame. This lets the stack tracing code (for
+ // Throwable) print information about the method being interpreted
+ // rather than about the interpreter itself. FRAME_DESC has a
+ // destructor so it cleans up automatically when the interpreter
+ // returns.
+ java::lang::Thread *thread = java::lang::Thread::currentThread();
+ _Jv_InterpFrame frame_desc (meth, thread);
- _Jv_word *pool_data = defining_class->constants.data;
-
- /* these two are used in the invokeXXX instructions */
- void (*fun)();
- _Jv_ResolvedMethod* rmeth;
+ _Jv_word stack[meth->max_stack];
+ _Jv_word *sp = stack;
+
+ _Jv_word locals[meth->max_locals];
#define INSN_LABEL(op) &&insn_##op
-#define GOTO_INSN(op) goto *(insn_target[op])
static const void *const insn_target[] =
{
INSN_LABEL(instanceof),
INSN_LABEL(monitorenter),
INSN_LABEL(monitorexit),
+#ifdef DIRECT_THREADED
+ 0, // wide
+#else
INSN_LABEL(wide),
+#endif
INSN_LABEL(multianewarray),
INSN_LABEL(ifnull),
INSN_LABEL(ifnonnull),
INSN_LABEL(goto_w),
INSN_LABEL(jsr_w),
+#ifdef DIRECT_THREADED
+ INSN_LABEL (ldc_class)
+#else
+ 0
+#endif
};
- /* If the macro INLINE_SWITCH is not defined, then the main loop
- operates as one big (normal) switch statement. If it is defined,
- then the case selection is performed `inline' in the end of the
- code for each case. The latter saves a native branch instruction
- for each java-instruction, but expands the code size somewhat.
+ pc_t pc;
- NOTE: On i386 defining INLINE_SWITCH improves over all
- performance approximately seven percent, but it may be different
- for other machines. At some point, this may be made into a proper
- configuration parameter. */
+#ifdef DIRECT_THREADED
-#define INLINE_SWITCH
+#define NEXT_INSN goto *((pc++)->insn)
+#define INTVAL() ((pc++)->int_val)
+#define AVAL() ((pc++)->datum)
-#ifdef INLINE_SWITCH
+#define GET1S() INTVAL ()
+#define GET2S() INTVAL ()
+#define GET1U() INTVAL ()
+#define GET2U() INTVAL ()
+#define AVAL1U() AVAL ()
+#define AVAL2U() AVAL ()
+#define AVAL2UP() AVAL ()
+#define SKIP_GOTO ++pc
+#define GOTO_VAL() (insn_slot *) pc->datum
+#define PCVAL(unionval) unionval.p
+#define AMPAMP(label) &&label
+
+ // Compile if we must. NOTE: Double-check locking.
+ if (meth->prepared == NULL)
+ {
+ _Jv_MutexLock (&compile_mutex);
+ if (meth->prepared == NULL)
+ meth->compile (insn_target);
+ _Jv_MutexUnlock (&compile_mutex);
+ }
-#define NEXT_INSN do { GOTO_INSN(*pc++); } while (0)
+ // If we're only compiling, stop here
+ if (args == NULL)
+ return;
+ pc = (insn_slot *) meth->prepared;
- NEXT_INSN;
#else
-#define NEXT_INSN goto next_insn
+#define NEXT_INSN goto *(insn_target[*pc++])
+
+#define GET1S() get1s (pc++)
+#define GET2S() (pc += 2, get2s (pc- 2))
+#define GET1U() get1u (pc++)
+#define GET2U() (pc += 2, get2u (pc - 2))
+ // Note that these could be more efficient when not handling 'ldc
+ // class'.
+#define AVAL1U() \
+ ({ int index = get1u (pc++); \
+ resolve_pool_entry (meth->defining_class, index).o; })
+#define AVAL2U() \
+ ({ int index = get2u (pc); pc += 2; \
+ resolve_pool_entry (meth->defining_class, index).o; })
+ // Note that we don't need to resolve the pool entry here as class
+ // constants are never wide.
+#define AVAL2UP() ({ int index = get2u (pc); pc += 2; &pool_data[index]; })
+#define SKIP_GOTO pc += 2
+#define GOTO_VAL() pc - 1 + get2s (pc)
+#define PCVAL(unionval) unionval.i
+#define AMPAMP(label) NULL
+
+ pc = bytecode ();
+
+#endif /* DIRECT_THREADED */
+
+#define TAKE_GOTO pc = GOTO_VAL ()
+
+ /* Go straight at it! the ffi raw format matches the internal
+ stack representation exactly. At least, that's the idea.
+ */
+ memcpy ((void*) locals, (void*) args, meth->args_raw_size);
+
+ _Jv_word *pool_data = meth->defining_class->constants.data;
- next_insn:
- GOTO_INSN (*pc++);
+ /* These three are temporaries for common code used by several
+ instructions. */
+ void (*fun)();
+ _Jv_ResolvedMethod* rmeth;
+ int tmpval;
-#endif
+ try
+ {
+ // We keep nop around. It is used if we're interpreting the
+ // bytecodes and not doing direct threading.
+ insn_nop:
+ NEXT_INSN;
- /* The first few instructions here are ordered according to their
- frequency, in the hope that this will improve code locality a
- little. */
+ /* The first few instructions here are ordered according to their
+ frequency, in the hope that this will improve code locality a
+ little. */
- insn_aload_0: // 0x2a
- LOADA(0);
+ insn_aload_0: // 0x2a
+ LOADA (0);
NEXT_INSN;
- insn_iload: // 0x15
- LOADI (get1u (pc++));
+ insn_iload: // 0x15
+ LOADI (GET1U ());
NEXT_INSN;
- insn_iload_1: // 0x1b
+ insn_iload_1: // 0x1b
LOADI (1);
NEXT_INSN;
- insn_invokevirtual: // 0xb6
- SAVE_PC;
+ insn_invokevirtual: // 0xb6
{
- int index = get2u (pc); pc += 2;
+ SAVE_PC();
+ int index = GET2U ();
- /* _Jv_ResolvePoolEntry returns immediately if the value already
- * is resolved. If we want to clutter up the code here to gain
- * a little performance, then we can check the corresponding bit
- * JV_CONSTANT_ResolvedFlag in the tag directly. For now, I
- * don't think it is worth it. */
+ /* _Jv_Linker::resolve_pool_entry returns immediately if the
+ * value already is resolved. If we want to clutter up the
+ * code here to gain a little performance, then we can check
+ * the corresponding bit JV_CONSTANT_ResolvedFlag in the tag
+ * directly. For now, I don't think it is worth it. */
- rmeth = (_Jv_ResolvePoolEntry (defining_class, index)).rmethod;
+ rmeth = (_Jv_Linker::resolve_pool_entry (meth->defining_class,
+ index)).rmethod;
sp -= rmeth->stack_item_count;
- // We don't use NULLCHECK here because we can't rely on that
- // working if the method is final. So instead we do an
- // explicit test.
- if (! sp[0].o)
- throw new java::lang::NullPointerException;
- if (rmeth->vtable_index == -1)
+ if (rmeth->method->accflags & Modifier::FINAL)
+ {
+ // We can't rely on NULLCHECK working if the method is final.
+ if (! sp[0].o)
+ throw_null_pointer_exception ();
+
+ // Final methods might not appear in the vtable.
+ fun = (void (*)()) rmeth->method->ncode;
+ }
+ else
+ {
+ NULLCHECK (sp[0].o);
+ jobject rcv = sp[0].o;
+ _Jv_VTable *table = *(_Jv_VTable**) rcv;
+ fun = (void (*)()) table->get_method (rmeth->method->index);
+ }
+
+#ifdef DIRECT_THREADED
+ // Rewrite instruction so that we use a faster pre-resolved
+ // method.
+ pc[-2].insn = &&invokevirtual_resolved;
+ pc[-1].datum = rmeth;
+#endif /* DIRECT_THREADED */
+ }
+ goto perform_invoke;
+
+#ifdef DIRECT_THREADED
+ invokevirtual_resolved:
+ {
+ SAVE_PC();
+ rmeth = (_Jv_ResolvedMethod *) AVAL ();
+ sp -= rmeth->stack_item_count;
+
+ if (rmeth->method->accflags & Modifier::FINAL)
{
- // final methods do not appear in the vtable,
- // if it does not appear in the superclass.
+ // We can't rely on NULLCHECK working if the method is final.
+ if (! sp[0].o)
+ throw_null_pointer_exception ();
+
+ // Final methods might not appear in the vtable.
fun = (void (*)()) rmeth->method->ncode;
}
else
{
jobject rcv = sp[0].o;
- _Jv_VTable *table = *(_Jv_VTable**)rcv;
- fun = (void (*)()) table->get_method(rmeth->vtable_index);
+ _Jv_VTable *table = *(_Jv_VTable**) rcv;
+ fun = (void (*)()) table->get_method (rmeth->method->index);
}
}
goto perform_invoke;
+#endif /* DIRECT_THREADED */
- perform_invoke:
+ perform_invoke:
{
/* here goes the magic again... */
ffi_cif *cif = &rmeth->cif;
ffi_raw *raw = (ffi_raw*) sp;
- jdouble rvalue;
+ _Jv_value rvalue;
#if FFI_NATIVE_RAW_API
/* We assume that this is only implemented if it's correct */
* so those are checked before the switch */
if (rtype == FFI_TYPE_POINTER)
{
- PUSHA (*(jobject*)&rvalue);
+ PUSHA (rvalue.object_value);
}
else if (rtype == FFI_TYPE_SINT32)
{
- PUSHI (*(jint*)&rvalue);
+ PUSHI (rvalue.int_value);
}
else if (rtype == FFI_TYPE_VOID)
{
/* skip */
}
- else switch (rtype)
+ else
{
- case FFI_TYPE_SINT8:
- {
- jbyte value = (*(jint*)&rvalue) & 0xff;
- PUSHI (value);
- }
- break;
+ switch (rtype)
+ {
+ case FFI_TYPE_SINT8:
+ PUSHI ((jbyte)(rvalue.int_value & 0xff));
+ break;
- case FFI_TYPE_SINT16:
- {
- jshort value = (*(jint*)&rvalue) & 0xffff;
- PUSHI (value);
- }
- break;
+ case FFI_TYPE_SINT16:
+ PUSHI ((jshort)(rvalue.int_value & 0xffff));
+ break;
- case FFI_TYPE_UINT16:
- {
- jint value = (*(jint*)&rvalue) & 0xffff;
- PUSHI (value);
- }
- break;
+ case FFI_TYPE_UINT16:
+ PUSHI (rvalue.int_value & 0xffff);
+ break;
- case FFI_TYPE_FLOAT:
- PUSHF (*(jfloat*)&rvalue);
- break;
+ case FFI_TYPE_FLOAT:
+ PUSHF (rvalue.float_value);
+ break;
- case FFI_TYPE_DOUBLE:
- PUSHD (rvalue);
- break;
+ case FFI_TYPE_DOUBLE:
+ PUSHD (rvalue.double_value);
+ break;
- case FFI_TYPE_SINT64:
- PUSHL (*(jlong*)&rvalue);
- break;
+ case FFI_TYPE_SINT64:
+ PUSHL (rvalue.long_value);
+ break;
- default:
- throw_internal_error ("unknown return type in invokeXXX");
+ default:
+ throw_internal_error ("unknown return type in invokeXXX");
+ }
}
-
}
NEXT_INSN;
-
- insn_nop:
- NEXT_INSN;
-
- insn_aconst_null:
+ insn_aconst_null:
PUSHA (NULL);
NEXT_INSN;
- insn_iconst_m1:
+ insn_iconst_m1:
PUSHI (-1);
NEXT_INSN;
- insn_iconst_0:
+ insn_iconst_0:
PUSHI (0);
NEXT_INSN;
- insn_iconst_1:
+ insn_iconst_1:
PUSHI (1);
NEXT_INSN;
- insn_iconst_2:
+ insn_iconst_2:
PUSHI (2);
NEXT_INSN;
- insn_iconst_3:
+ insn_iconst_3:
PUSHI (3);
NEXT_INSN;
- insn_iconst_4:
+ insn_iconst_4:
PUSHI (4);
NEXT_INSN;
- insn_iconst_5:
+ insn_iconst_5:
PUSHI (5);
NEXT_INSN;
- insn_lconst_0:
+ insn_lconst_0:
PUSHL (0);
NEXT_INSN;
- insn_lconst_1:
+ insn_lconst_1:
PUSHL (1);
NEXT_INSN;
- insn_fconst_0:
+ insn_fconst_0:
PUSHF (0);
NEXT_INSN;
- insn_fconst_1:
+ insn_fconst_1:
PUSHF (1);
NEXT_INSN;
- insn_fconst_2:
+ insn_fconst_2:
PUSHF (2);
NEXT_INSN;
- insn_dconst_0:
+ insn_dconst_0:
PUSHD (0);
NEXT_INSN;
- insn_dconst_1:
+ insn_dconst_1:
PUSHD (1);
NEXT_INSN;
- insn_bipush:
- PUSHI (get1s(pc++));
+ insn_bipush:
+ // For direct threaded, bipush and sipush are the same.
+#ifndef DIRECT_THREADED
+ PUSHI (GET1S ());
NEXT_INSN;
-
- insn_sipush:
- PUSHI (get2s(pc)); pc += 2;
+#endif /* DIRECT_THREADED */
+ insn_sipush:
+ PUSHI (GET2S ());
NEXT_INSN;
- insn_ldc:
- {
- int index = get1u (pc++);
- PUSHA(pool_data[index].o);
- }
+ insn_ldc:
+ // For direct threaded, ldc and ldc_w are the same.
+#ifndef DIRECT_THREADED
+ PUSHA ((jobject) AVAL1U ());
+ NEXT_INSN;
+#endif /* DIRECT_THREADED */
+ insn_ldc_w:
+ PUSHA ((jobject) AVAL2U ());
NEXT_INSN;
- insn_ldc_w:
+#ifdef DIRECT_THREADED
+ // For direct threaded we have a separate 'ldc class' operation.
+ insn_ldc_class:
{
- int index = get2u (pc); pc += 2;
- PUSHA(pool_data[index].o);
+ SAVE_PC();
+ // We could rewrite the instruction at this point.
+ int index = INTVAL ();
+ jobject k = (_Jv_Linker::resolve_pool_entry (meth->defining_class,
+ index)).o;
+ PUSHA (k);
}
NEXT_INSN;
+#endif /* DIRECT_THREADED */
- insn_ldc2_w:
+ insn_ldc2_w:
{
- int index = get2u (pc); pc += 2;
- memcpy (sp, &pool_data[index], 2*sizeof (_Jv_word));
+ void *where = AVAL2UP ();
+ memcpy (sp, where, 2*sizeof (_Jv_word));
sp += 2;
}
NEXT_INSN;
- insn_lload:
- LOADL (get1u (pc++));
+ insn_lload:
+ LOADL (GET1U ());
NEXT_INSN;
- insn_fload:
- LOADF (get1u (pc++));
+ insn_fload:
+ LOADF (GET1U ());
NEXT_INSN;
- insn_dload:
- LOADD (get1u (pc++));
+ insn_dload:
+ LOADD (GET1U ());
NEXT_INSN;
- insn_aload:
- LOADA (get1u (pc++));
+ insn_aload:
+ LOADA (GET1U ());
NEXT_INSN;
- insn_iload_0:
+ insn_iload_0:
LOADI (0);
NEXT_INSN;
- insn_iload_2:
+ insn_iload_2:
LOADI (2);
NEXT_INSN;
- insn_iload_3:
+ insn_iload_3:
LOADI (3);
NEXT_INSN;
- insn_lload_0:
+ insn_lload_0:
LOADL (0);
NEXT_INSN;
- insn_lload_1:
+ insn_lload_1:
LOADL (1);
NEXT_INSN;
- insn_lload_2:
+ insn_lload_2:
LOADL (2);
NEXT_INSN;
- insn_lload_3:
+ insn_lload_3:
LOADL (3);
NEXT_INSN;
- insn_fload_0:
+ insn_fload_0:
LOADF (0);
NEXT_INSN;
- insn_fload_1:
+ insn_fload_1:
LOADF (1);
NEXT_INSN;
- insn_fload_2:
+ insn_fload_2:
LOADF (2);
NEXT_INSN;
- insn_fload_3:
+ insn_fload_3:
LOADF (3);
NEXT_INSN;
- insn_dload_0:
+ insn_dload_0:
LOADD (0);
NEXT_INSN;
- insn_dload_1:
+ insn_dload_1:
LOADD (1);
NEXT_INSN;
- insn_dload_2:
+ insn_dload_2:
LOADD (2);
NEXT_INSN;
- insn_dload_3:
+ insn_dload_3:
LOADD (3);
NEXT_INSN;
- insn_aload_1:
+ insn_aload_1:
LOADA(1);
NEXT_INSN;
- insn_aload_2:
+ insn_aload_2:
LOADA(2);
NEXT_INSN;
- insn_aload_3:
+ insn_aload_3:
LOADA(3);
NEXT_INSN;
- insn_iaload:
+ insn_iaload:
{
jint index = POPI();
jintArray arr = (jintArray) POPA();
}
NEXT_INSN;
- insn_laload:
+ insn_laload:
{
jint index = POPI();
jlongArray arr = (jlongArray) POPA();
}
NEXT_INSN;
- insn_faload:
+ insn_faload:
{
jint index = POPI();
jfloatArray arr = (jfloatArray) POPA();
}
NEXT_INSN;
- insn_daload:
+ insn_daload:
{
jint index = POPI();
jdoubleArray arr = (jdoubleArray) POPA();
}
NEXT_INSN;
- insn_aaload:
+ insn_aaload:
{
jint index = POPI();
jobjectArray arr = (jobjectArray) POPA();
}
NEXT_INSN;
- insn_baload:
+ insn_baload:
{
jint index = POPI();
jbyteArray arr = (jbyteArray) POPA();
}
NEXT_INSN;
- insn_caload:
+ insn_caload:
{
jint index = POPI();
jcharArray arr = (jcharArray) POPA();
}
NEXT_INSN;
- insn_saload:
+ insn_saload:
{
jint index = POPI();
jshortArray arr = (jshortArray) POPA();
}
NEXT_INSN;
- insn_istore:
- STOREI (get1u (pc++));
+ insn_istore:
+ STOREI (GET1U ());
NEXT_INSN;
- insn_lstore:
- STOREL (get1u (pc++));
+ insn_lstore:
+ STOREL (GET1U ());
NEXT_INSN;
- insn_fstore:
- STOREF (get1u (pc++));
+ insn_fstore:
+ STOREF (GET1U ());
NEXT_INSN;
- insn_dstore:
- STORED (get1u (pc++));
+ insn_dstore:
+ STORED (GET1U ());
NEXT_INSN;
- insn_astore:
- STOREA (get1u (pc++));
+ insn_astore:
+ STOREA (GET1U ());
NEXT_INSN;
- insn_istore_0:
+ insn_istore_0:
STOREI (0);
NEXT_INSN;
- insn_istore_1:
+ insn_istore_1:
STOREI (1);
NEXT_INSN;
- insn_istore_2:
+ insn_istore_2:
STOREI (2);
NEXT_INSN;
- insn_istore_3:
+ insn_istore_3:
STOREI (3);
NEXT_INSN;
- insn_lstore_0:
+ insn_lstore_0:
STOREL (0);
NEXT_INSN;
- insn_lstore_1:
+ insn_lstore_1:
STOREL (1);
NEXT_INSN;
- insn_lstore_2:
+ insn_lstore_2:
STOREL (2);
NEXT_INSN;
- insn_lstore_3:
+ insn_lstore_3:
STOREL (3);
NEXT_INSN;
- insn_fstore_0:
+ insn_fstore_0:
STOREF (0);
NEXT_INSN;
- insn_fstore_1:
+ insn_fstore_1:
STOREF (1);
NEXT_INSN;
- insn_fstore_2:
+ insn_fstore_2:
STOREF (2);
NEXT_INSN;
- insn_fstore_3:
+ insn_fstore_3:
STOREF (3);
NEXT_INSN;
- insn_dstore_0:
+ insn_dstore_0:
STORED (0);
NEXT_INSN;
- insn_dstore_1:
+ insn_dstore_1:
STORED (1);
NEXT_INSN;
- insn_dstore_2:
+ insn_dstore_2:
STORED (2);
NEXT_INSN;
- insn_dstore_3:
+ insn_dstore_3:
STORED (3);
NEXT_INSN;
- insn_astore_0:
+ insn_astore_0:
STOREA(0);
NEXT_INSN;
- insn_astore_1:
+ insn_astore_1:
STOREA(1);
NEXT_INSN;
- insn_astore_2:
+ insn_astore_2:
STOREA(2);
NEXT_INSN;
- insn_astore_3:
+ insn_astore_3:
STOREA(3);
NEXT_INSN;
- insn_iastore:
+ insn_iastore:
{
jint value = POPI();
jint index = POPI();
}
NEXT_INSN;
- insn_lastore:
+ insn_lastore:
{
jlong value = POPL();
jint index = POPI();
}
NEXT_INSN;
- insn_fastore:
+ insn_fastore:
{
jfloat value = POPF();
jint index = POPI();
}
NEXT_INSN;
- insn_dastore:
+ insn_dastore:
{
jdouble value = POPD();
jint index = POPI();
}
NEXT_INSN;
- insn_aastore:
+ insn_aastore:
{
jobject value = POPA();
jint index = POPI();
}
NEXT_INSN;
- insn_bastore:
+ insn_bastore:
{
jbyte value = (jbyte) POPI();
jint index = POPI();
}
NEXT_INSN;
- insn_castore:
+ insn_castore:
{
jchar value = (jchar) POPI();
jint index = POPI();
}
NEXT_INSN;
- insn_sastore:
+ insn_sastore:
{
jshort value = (jshort) POPI();
jint index = POPI();
}
NEXT_INSN;
- insn_pop:
+ insn_pop:
sp -= 1;
NEXT_INSN;
- insn_pop2:
+ insn_pop2:
sp -= 2;
NEXT_INSN;
- insn_dup:
+ insn_dup:
sp[0] = sp[-1];
sp += 1;
NEXT_INSN;
- insn_dup_x1:
+ insn_dup_x1:
dupx (sp, 1, 1); sp+=1;
NEXT_INSN;
- insn_dup_x2:
+ insn_dup_x2:
dupx (sp, 1, 2); sp+=1;
NEXT_INSN;
- insn_dup2:
+ insn_dup2:
sp[0] = sp[-2];
sp[1] = sp[-1];
sp += 2;
NEXT_INSN;
- insn_dup2_x1:
+ insn_dup2_x1:
dupx (sp, 2, 1); sp+=2;
NEXT_INSN;
- insn_dup2_x2:
+ insn_dup2_x2:
dupx (sp, 2, 2); sp+=2;
NEXT_INSN;
- insn_swap:
+ insn_swap:
{
jobject tmp1 = POPA();
jobject tmp2 = POPA();
}
NEXT_INSN;
- insn_iadd:
+ insn_iadd:
BINOPI(+);
NEXT_INSN;
- insn_ladd:
+ insn_ladd:
BINOPL(+);
NEXT_INSN;
- insn_fadd:
+ insn_fadd:
BINOPF(+);
NEXT_INSN;
- insn_dadd:
+ insn_dadd:
BINOPD(+);
NEXT_INSN;
- insn_isub:
+ insn_isub:
BINOPI(-);
NEXT_INSN;
- insn_lsub:
+ insn_lsub:
BINOPL(-);
NEXT_INSN;
- insn_fsub:
+ insn_fsub:
BINOPF(-);
NEXT_INSN;
- insn_dsub:
+ insn_dsub:
BINOPD(-);
NEXT_INSN;
- insn_imul:
+ insn_imul:
BINOPI(*);
NEXT_INSN;
- insn_lmul:
+ insn_lmul:
BINOPL(*);
NEXT_INSN;
- insn_fmul:
+ insn_fmul:
BINOPF(*);
NEXT_INSN;
- insn_dmul:
+ insn_dmul:
BINOPD(*);
NEXT_INSN;
- insn_idiv:
- SAVE_PC;
+ insn_idiv:
{
+ SAVE_PC();
jint value2 = POPI();
jint value1 = POPI();
jint res = _Jv_divI (value1, value2);
}
NEXT_INSN;
- insn_ldiv:
- SAVE_PC;
+ insn_ldiv:
{
+ SAVE_PC();
jlong value2 = POPL();
jlong value1 = POPL();
jlong res = _Jv_divJ (value1, value2);
}
NEXT_INSN;
- insn_fdiv:
+ insn_fdiv:
{
+ SAVE_PC();
jfloat value2 = POPF();
jfloat value1 = POPF();
jfloat res = value1 / value2;
}
NEXT_INSN;
- insn_ddiv:
+ insn_ddiv:
{
jdouble value2 = POPD();
jdouble value1 = POPD();
}
NEXT_INSN;
- insn_irem:
- SAVE_PC;
+ insn_irem:
{
+ SAVE_PC();
jint value2 = POPI();
jint value1 = POPI();
jint res = _Jv_remI (value1, value2);
}
NEXT_INSN;
- insn_lrem:
- SAVE_PC;
+ insn_lrem:
{
+ SAVE_PC();
jlong value2 = POPL();
jlong value1 = POPL();
jlong res = _Jv_remJ (value1, value2);
}
NEXT_INSN;
- insn_frem:
+ insn_frem:
{
jfloat value2 = POPF();
jfloat value1 = POPF();
}
NEXT_INSN;
- insn_drem:
+ insn_drem:
{
jdouble value2 = POPD();
jdouble value1 = POPD();
}
NEXT_INSN;
- insn_ineg:
+ insn_ineg:
{
jint value = POPI();
PUSHI (value * -1);
}
NEXT_INSN;
- insn_lneg:
+ insn_lneg:
{
jlong value = POPL();
PUSHL (value * -1);
}
NEXT_INSN;
- insn_fneg:
+ insn_fneg:
{
jfloat value = POPF();
PUSHF (value * -1);
}
NEXT_INSN;
- insn_dneg:
+ insn_dneg:
{
jdouble value = POPD();
PUSHD (value * -1);
}
NEXT_INSN;
- insn_ishl:
+ insn_ishl:
{
jint shift = (POPI() & 0x1f);
jint value = POPI();
}
NEXT_INSN;
- insn_lshl:
+ insn_lshl:
{
jint shift = (POPI() & 0x3f);
jlong value = POPL();
}
NEXT_INSN;
- insn_ishr:
+ insn_ishr:
{
jint shift = (POPI() & 0x1f);
jint value = POPI();
}
NEXT_INSN;
- insn_lshr:
+ insn_lshr:
{
jint shift = (POPI() & 0x3f);
jlong value = POPL();
}
NEXT_INSN;
- insn_iushr:
+ insn_iushr:
{
jint shift = (POPI() & 0x1f);
- unsigned long value = POPI();
+ _Jv_uint value = (_Jv_uint) POPI();
PUSHI ((jint) (value >> shift));
}
NEXT_INSN;
- insn_lushr:
+ insn_lushr:
{
jint shift = (POPI() & 0x3f);
- UINT64 value = (UINT64) POPL();
- PUSHL ((value >> shift));
+ _Jv_ulong value = (_Jv_ulong) POPL();
+ PUSHL ((jlong) (value >> shift));
}
NEXT_INSN;
- insn_iand:
+ insn_iand:
BINOPI (&);
NEXT_INSN;
- insn_land:
+ insn_land:
BINOPL (&);
NEXT_INSN;
- insn_ior:
+ insn_ior:
BINOPI (|);
NEXT_INSN;
- insn_lor:
+ insn_lor:
BINOPL (|);
NEXT_INSN;
- insn_ixor:
+ insn_ixor:
BINOPI (^);
NEXT_INSN;
- insn_lxor:
+ insn_lxor:
BINOPL (^);
NEXT_INSN;
- insn_iinc:
+ insn_iinc:
{
- jint index = get1u (pc++);
- jint amount = get1s (pc++);
+ jint index = GET1U ();
+ jint amount = GET1S ();
locals[index].i += amount;
}
NEXT_INSN;
- insn_i2l:
+ insn_i2l:
{jlong value = POPI(); PUSHL (value);}
NEXT_INSN;
- insn_i2f:
+ insn_i2f:
{jfloat value = POPI(); PUSHF (value);}
NEXT_INSN;
- insn_i2d:
+ insn_i2d:
{jdouble value = POPI(); PUSHD (value);}
NEXT_INSN;
- insn_l2i:
+ insn_l2i:
{jint value = POPL(); PUSHI (value);}
NEXT_INSN;
- insn_l2f:
+ insn_l2f:
{jfloat value = POPL(); PUSHF (value);}
NEXT_INSN;
- insn_l2d:
+ insn_l2d:
{jdouble value = POPL(); PUSHD (value);}
NEXT_INSN;
- insn_f2i:
+ insn_f2i:
{
using namespace java::lang;
jint value = convert (POPF (), Integer::MIN_VALUE, Integer::MAX_VALUE);
}
NEXT_INSN;
- insn_f2l:
+ insn_f2l:
{
using namespace java::lang;
jlong value = convert (POPF (), Long::MIN_VALUE, Long::MAX_VALUE);
}
NEXT_INSN;
- insn_f2d:
+ insn_f2d:
{ jdouble value = POPF (); PUSHD(value); }
NEXT_INSN;
- insn_d2i:
+ insn_d2i:
{
using namespace java::lang;
jint value = convert (POPD (), Integer::MIN_VALUE, Integer::MAX_VALUE);
}
NEXT_INSN;
- insn_d2l:
+ insn_d2l:
{
using namespace java::lang;
jlong value = convert (POPD (), Long::MIN_VALUE, Long::MAX_VALUE);
}
NEXT_INSN;
- insn_d2f:
+ insn_d2f:
{ jfloat value = POPD (); PUSHF(value); }
NEXT_INSN;
- insn_i2b:
+ insn_i2b:
{ jbyte value = POPI (); PUSHI(value); }
NEXT_INSN;
- insn_i2c:
+ insn_i2c:
{ jchar value = POPI (); PUSHI(value); }
NEXT_INSN;
- insn_i2s:
+ insn_i2s:
{ jshort value = POPI (); PUSHI(value); }
NEXT_INSN;
- insn_lcmp:
+ insn_lcmp:
{
jlong value2 = POPL ();
jlong value1 = POPL ();
}
NEXT_INSN;
- insn_fcmpl:
- insn_fcmpg:
+ insn_fcmpl:
+ tmpval = -1;
+ goto fcmp;
+
+ insn_fcmpg:
+ tmpval = 1;
+
+ fcmp:
{
jfloat value2 = POPF ();
jfloat value1 = POPF ();
PUSHI (0);
else if (value1 < value2)
PUSHI (-1);
- else if ((*(pc-1)) == op_fcmpg)
- PUSHI (1);
else
- PUSHI (-1);
+ PUSHI (tmpval);
}
NEXT_INSN;
- insn_dcmpl:
- insn_dcmpg:
+ insn_dcmpl:
+ tmpval = -1;
+ goto dcmp;
+
+ insn_dcmpg:
+ tmpval = 1;
+
+ dcmp:
{
jdouble value2 = POPD ();
jdouble value1 = POPD ();
PUSHI (0);
else if (value1 < value2)
PUSHI (-1);
- else if ((*(pc-1)) == op_dcmpg)
- PUSHI (1);
else
- PUSHI (-1);
+ PUSHI (tmpval);
}
NEXT_INSN;
- insn_ifeq:
+ insn_ifeq:
{
- jint offset = get2s (pc);
if (POPI() == 0)
- pc = pc-1+offset;
+ TAKE_GOTO;
else
- pc = pc+2;
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_ifne:
+ insn_ifne:
{
- jint offset = get2s (pc);
if (POPI() != 0)
- pc = pc-1+offset;
+ TAKE_GOTO;
else
- pc = pc+2;
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_iflt:
+ insn_iflt:
{
- jint offset = get2s (pc);
if (POPI() < 0)
- pc = pc-1+offset;
+ TAKE_GOTO;
else
- pc = pc+2;
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_ifge:
+ insn_ifge:
{
- jint offset = get2s (pc);
if (POPI() >= 0)
- pc = pc-1+offset;
+ TAKE_GOTO;
else
- pc = pc+2;
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_ifgt:
+ insn_ifgt:
{
- jint offset = get2s (pc);
if (POPI() > 0)
- pc = pc-1+offset;
+ TAKE_GOTO;
else
- pc = pc+2;
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_ifle:
+ insn_ifle:
{
- jint offset = get2s (pc);
if (POPI() <= 0)
- pc = pc-1+offset;
+ TAKE_GOTO;
else
- pc = pc+2;
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_if_icmpeq:
+ insn_if_icmpeq:
{
- jint offset = get2s (pc);
jint value2 = POPI();
jint value1 = POPI();
if (value1 == value2)
- pc = pc-1+offset;
+ TAKE_GOTO;
else
- pc = pc+2;
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_if_icmpne:
+ insn_if_icmpne:
{
- jint offset = get2s (pc);
jint value2 = POPI();
jint value1 = POPI();
if (value1 != value2)
- pc = pc-1+offset;
+ TAKE_GOTO;
else
- pc = pc+2;
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_if_icmplt:
+ insn_if_icmplt:
{
- jint offset = get2s (pc);
jint value2 = POPI();
jint value1 = POPI();
if (value1 < value2)
- pc = pc-1+offset;
+ TAKE_GOTO;
else
- pc = pc+2;
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_if_icmpge:
+ insn_if_icmpge:
{
- jint offset = get2s (pc);
jint value2 = POPI();
jint value1 = POPI();
if (value1 >= value2)
- pc = pc-1+offset;
+ TAKE_GOTO;
else
- pc = pc+2;
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_if_icmpgt:
+ insn_if_icmpgt:
{
- jint offset = get2s (pc);
jint value2 = POPI();
jint value1 = POPI();
if (value1 > value2)
- pc = pc-1+offset;
+ TAKE_GOTO;
else
- pc = pc+2;
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_if_icmple:
+ insn_if_icmple:
{
- jint offset = get2s (pc);
jint value2 = POPI();
jint value1 = POPI();
if (value1 <= value2)
- pc = pc-1+offset;
+ TAKE_GOTO;
else
- pc = pc+2;
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_if_acmpeq:
+ insn_if_acmpeq:
{
- jint offset = get2s (pc);
jobject value2 = POPA();
jobject value1 = POPA();
if (value1 == value2)
- pc = pc-1+offset;
+ TAKE_GOTO;
else
- pc = pc+2;
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_if_acmpne:
+ insn_if_acmpne:
{
- jint offset = get2s (pc);
jobject value2 = POPA();
jobject value1 = POPA();
if (value1 != value2)
- pc = pc-1+offset;
+ TAKE_GOTO;
else
- pc = pc+2;
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_goto:
+ insn_goto_w:
+#ifndef DIRECT_THREADED
+ // For direct threaded, goto and goto_w are the same.
+ pc = pc - 1 + get4 (pc);
+ NEXT_INSN;
+#endif /* DIRECT_THREADED */
+ insn_goto:
+ TAKE_GOTO;
+ NEXT_INSN;
+
+ insn_jsr_w:
+#ifndef DIRECT_THREADED
+ // For direct threaded, jsr and jsr_w are the same.
{
- jint offset = get2s (pc);
- pc = pc-1+offset;
+ pc_t next = pc - 1 + get4 (pc);
+ pc += 4;
+ PUSHA ((jobject) pc);
+ pc = next;
}
NEXT_INSN;
-
- insn_jsr:
+#endif /* DIRECT_THREADED */
+ insn_jsr:
{
- unsigned char *base_pc = pc-1;
- jint offset = get2s (pc); pc += 2;
- PUSHA ((jobject)pc);
- pc = base_pc+offset;
+ pc_t next = GOTO_VAL();
+ SKIP_GOTO;
+ PUSHA ((jobject) pc);
+ pc = next;
}
NEXT_INSN;
- insn_ret:
+ insn_ret:
{
- jint index = get1u (pc);
- pc = (unsigned char*) PEEKA (index);
+ jint index = GET1U ();
+ pc = (pc_t) PEEKA (index);
}
NEXT_INSN;
- insn_tableswitch:
+ insn_tableswitch:
{
- unsigned char *base_pc = pc-1;
+#ifdef DIRECT_THREADED
+ void *def = (pc++)->datum;
+
int index = POPI();
- unsigned char* base = bytecode ();
- while ((pc-base) % 4 != 0)
- pc++;
+ jint low = INTVAL ();
+ jint high = INTVAL ();
- jint def = get4 (pc);
- jint low = get4 (pc+4);
- jint high = get4 (pc+8);
+ if (index < low || index > high)
+ pc = (insn_slot *) def;
+ else
+ pc = (insn_slot *) ((pc + index - low)->datum);
+#else
+ pc_t base_pc = pc - 1;
+ int index = POPI ();
+
+ pc_t base = (pc_t) bytecode ();
+ while ((pc - base) % 4 != 0)
+ ++pc;
+ jint def = get4 (pc);
+ jint low = get4 (pc + 4);
+ jint high = get4 (pc + 8);
if (index < low || index > high)
- pc = base_pc + def;
+ pc = base_pc + def;
else
- pc = base_pc + get4 (pc+4*(index-low+3));
+ pc = base_pc + get4 (pc + 4 * (index - low + 3));
+#endif /* DIRECT_THREADED */
}
NEXT_INSN;
- insn_lookupswitch:
+ insn_lookupswitch:
{
+#ifdef DIRECT_THREADED
+ void *def = (pc++)->insn;
+
+ int index = POPI();
+
+ jint npairs = INTVAL ();
+
+ int max = npairs - 1;
+ int min = 0;
+
+ // Simple binary search...
+ while (min < max)
+ {
+ int half = (min + max) / 2;
+ int match = pc[2 * half].int_val;
+
+ if (index == match)
+ {
+ // Found it.
+ pc = (insn_slot *) pc[2 * half + 1].datum;
+ NEXT_INSN;
+ }
+ else if (index < match)
+ // We can use HALF - 1 here because we check again on
+ // loop exit.
+ max = half - 1;
+ else
+ // We can use HALF + 1 here because we check again on
+ // loop exit.
+ min = half + 1;
+ }
+ if (index == pc[2 * min].int_val)
+ pc = (insn_slot *) pc[2 * min + 1].datum;
+ else
+ pc = (insn_slot *) def;
+#else
unsigned char *base_pc = pc-1;
int index = POPI();
unsigned char* base = bytecode ();
while ((pc-base) % 4 != 0)
- pc++;
+ ++pc;
jint def = get4 (pc);
jint npairs = get4 (pc+4);
int max = npairs-1;
int min = 0;
- // simple binary search...
+ // Simple binary search...
while (min < max)
{
int half = (min+max)/2;
if (index == match)
min = max = half;
-
else if (index < match)
- max = half-1;
-
+ // We can use HALF - 1 here because we check again on
+ // loop exit.
+ max = half - 1;
else
- min = half+1;
+ // We can use HALF + 1 here because we check again on
+ // loop exit.
+ min = half + 1;
}
if (index == get4 (pc+ 4*(2 + 2*min)))
pc = base_pc + get4 (pc+ 4*(2 + 2*min + 1));
else
pc = base_pc + def;
+#endif /* DIRECT_THREADED */
}
NEXT_INSN;
- /* on return, just save the sp and return to caller */
- insn_ireturn:
- insn_lreturn:
- insn_freturn:
- insn_dreturn:
- insn_areturn:
- insn_return:
- inv->sp = sp;
+ insn_areturn:
+ *(jobject *) retp = POPA ();
+ return;
+
+ insn_lreturn:
+ *(jlong *) retp = POPL ();
+ return;
+
+ insn_freturn:
+ *(jfloat *) retp = POPF ();
return;
- insn_getstatic:
- SAVE_PC;
+ insn_dreturn:
+ *(jdouble *) retp = POPD ();
+ return;
+
+ insn_ireturn:
+ *(jint *) retp = POPI ();
+ return;
+
+ insn_return:
+ return;
+
+ insn_getstatic:
{
- jint fieldref_index = get2u (pc); pc += 2;
- _Jv_ResolvePoolEntry (defining_class, fieldref_index);
+ jint fieldref_index = GET2U ();
+ SAVE_PC(); // Constant pool resolution could throw.
+ _Jv_Linker::resolve_pool_entry (meth->defining_class, fieldref_index);
_Jv_Field *field = pool_data[fieldref_index].field;
if ((field->flags & Modifier::STATIC) == 0)
jclass type = field->type;
+ // We rewrite the instruction once we discover what it refers
+ // to.
+ void *newinsn = NULL;
if (type->isPrimitive ())
{
switch (type->size_in_bytes)
{
case 1:
- PUSHI (*(jbyte*) (field->u.addr));
+ PUSHI (*field->u.byte_addr);
+ newinsn = AMPAMP (getstatic_resolved_1);
break;
case 2:
if (type == JvPrimClass (char))
- PUSHI(*(jchar*) (field->u.addr));
+ {
+ PUSHI (*field->u.char_addr);
+ newinsn = AMPAMP (getstatic_resolved_char);
+ }
else
- PUSHI(*(jshort*) (field->u.addr));
+ {
+ PUSHI (*field->u.short_addr);
+ newinsn = AMPAMP (getstatic_resolved_short);
+ }
break;
case 4:
- PUSHI(*(jint*) (field->u.addr));
+ PUSHI(*field->u.int_addr);
+ newinsn = AMPAMP (getstatic_resolved_4);
break;
case 8:
- PUSHL(*(jlong*) (field->u.addr));
+ PUSHL(*field->u.long_addr);
+ newinsn = AMPAMP (getstatic_resolved_8);
break;
}
}
else
{
- PUSHA(*(jobject*) (field->u.addr));
+ PUSHA(*field->u.object_addr);
+ newinsn = AMPAMP (getstatic_resolved_obj);
}
+
+#ifdef DIRECT_THREADED
+ pc[-2].insn = newinsn;
+ pc[-1].datum = field->u.addr;
+#endif /* DIRECT_THREADED */
}
NEXT_INSN;
- insn_getfield:
- SAVE_PC;
+#ifdef DIRECT_THREADED
+ getstatic_resolved_1:
+ PUSHI (*(jbyte *) AVAL ());
+ NEXT_INSN;
+
+ getstatic_resolved_char:
+ PUSHI (*(jchar *) AVAL ());
+ NEXT_INSN;
+
+ getstatic_resolved_short:
+ PUSHI (*(jshort *) AVAL ());
+ NEXT_INSN;
+
+ getstatic_resolved_4:
+ PUSHI (*(jint *) AVAL ());
+ NEXT_INSN;
+
+ getstatic_resolved_8:
+ PUSHL (*(jlong *) AVAL ());
+ NEXT_INSN;
+
+ getstatic_resolved_obj:
+ PUSHA (*(jobject *) AVAL ());
+ NEXT_INSN;
+#endif /* DIRECT_THREADED */
+
+ insn_getfield:
{
- jint fieldref_index = get2u (pc); pc += 2;
- _Jv_ResolvePoolEntry (defining_class, fieldref_index);
+ SAVE_PC();
+ jint fieldref_index = GET2U ();
+ _Jv_Linker::resolve_pool_entry (meth->defining_class, fieldref_index);
_Jv_Field *field = pool_data[fieldref_index].field;
if ((field->flags & Modifier::STATIC) != 0)
jclass type = field->type;
jint field_offset = field->u.boffset;
- if (field_offset > 0xffff)
- throw new java::lang::VirtualMachineError;
jobject obj = POPA();
NULLCHECK(obj);
+ void *newinsn = NULL;
+ _Jv_value *val = (_Jv_value *) ((char *)obj + field_offset);
if (type->isPrimitive ())
{
switch (type->size_in_bytes)
{
case 1:
- PUSHI (*(jbyte*) ((char*)obj + field_offset));
+ PUSHI (val->byte_value);
+ newinsn = AMPAMP (getfield_resolved_1);
break;
case 2:
if (type == JvPrimClass (char))
- PUSHI (*(jchar*) ((char*)obj + field_offset));
+ {
+ PUSHI (val->char_value);
+ newinsn = AMPAMP (getfield_resolved_char);
+ }
else
- PUSHI (*(jshort*) ((char*)obj + field_offset));
+ {
+ PUSHI (val->short_value);
+ newinsn = AMPAMP (getfield_resolved_short);
+ }
break;
case 4:
- PUSHI (*(jint*) ((char*)obj + field_offset));
+ PUSHI (val->int_value);
+ newinsn = AMPAMP (getfield_resolved_4);
break;
case 8:
- PUSHL(*(jlong*) ((char*)obj + field_offset));
+ PUSHL (val->long_value);
+ newinsn = AMPAMP (getfield_resolved_8);
break;
}
}
else
{
- PUSHA(*(jobject*) ((char*)obj + field_offset));
+ PUSHA (val->object_value);
+ newinsn = AMPAMP (getfield_resolved_obj);
}
+
+#ifdef DIRECT_THREADED
+ pc[-2].insn = newinsn;
+ pc[-1].int_val = field_offset;
+#endif /* DIRECT_THREADED */
}
NEXT_INSN;
- insn_putstatic:
- SAVE_PC;
+#ifdef DIRECT_THREADED
+ getfield_resolved_1:
{
- jint fieldref_index = get2u (pc); pc += 2;
- _Jv_ResolvePoolEntry (defining_class, fieldref_index);
- _Jv_Field *field = pool_data[fieldref_index].field;
+ char *obj = (char *) POPA ();
+ NULLCHECK (obj);
+ PUSHI (*(jbyte *) (obj + INTVAL ()));
+ }
+ NEXT_INSN;
- jclass type = field->type;
+ getfield_resolved_char:
+ {
+ char *obj = (char *) POPA ();
+ NULLCHECK (obj);
+ PUSHI (*(jchar *) (obj + INTVAL ()));
+ }
+ NEXT_INSN;
- // ResolvePoolEntry cannot check this
- if ((field->flags & Modifier::STATIC) == 0)
- throw_incompatible_class_change_error
- (JvNewStringLatin1 ("field no longer static"));
+ getfield_resolved_short:
+ {
+ char *obj = (char *) POPA ();
+ NULLCHECK (obj);
+ PUSHI (*(jshort *) (obj + INTVAL ()));
+ }
+ NEXT_INSN;
- if (type->isPrimitive ())
- {
- switch (type->size_in_bytes)
- {
- case 1:
- {
+ getfield_resolved_4:
+ {
+ char *obj = (char *) POPA ();
+ NULLCHECK (obj);
+ PUSHI (*(jint *) (obj + INTVAL ()));
+ }
+ NEXT_INSN;
+
+ getfield_resolved_8:
+ {
+ char *obj = (char *) POPA ();
+ NULLCHECK (obj);
+ PUSHL (*(jlong *) (obj + INTVAL ()));
+ }
+ NEXT_INSN;
+
+ getfield_resolved_obj:
+ {
+ char *obj = (char *) POPA ();
+ NULLCHECK (obj);
+ PUSHA (*(jobject *) (obj + INTVAL ()));
+ }
+ NEXT_INSN;
+#endif /* DIRECT_THREADED */
+
+ insn_putstatic:
+ {
+ SAVE_PC();
+ jint fieldref_index = GET2U ();
+ _Jv_Linker::resolve_pool_entry (meth->defining_class, fieldref_index);
+ _Jv_Field *field = pool_data[fieldref_index].field;
+
+ jclass type = field->type;
+
+ // ResolvePoolEntry cannot check this
+ if ((field->flags & Modifier::STATIC) == 0)
+ throw_incompatible_class_change_error
+ (JvNewStringLatin1 ("field no longer static"));
+
+ void *newinsn = NULL;
+ if (type->isPrimitive ())
+ {
+ switch (type->size_in_bytes)
+ {
+ case 1:
+ {
jint value = POPI();
- *(jbyte*) (field->u.addr) = value;
+ *field->u.byte_addr = value;
+ newinsn = AMPAMP (putstatic_resolved_1);
break;
}
case 2:
{
jint value = POPI();
- *(jchar*) (field->u.addr) = value;
+ *field->u.char_addr = value;
+ newinsn = AMPAMP (putstatic_resolved_2);
break;
}
case 4:
{
jint value = POPI();
- *(jint*) (field->u.addr) = value;
+ *field->u.int_addr = value;
+ newinsn = AMPAMP (putstatic_resolved_4);
break;
}
case 8:
{
jlong value = POPL();
- *(jlong*) (field->u.addr) = value;
+ *field->u.long_addr = value;
+ newinsn = AMPAMP (putstatic_resolved_8);
break;
}
}
else
{
jobject value = POPA();
- *(jobject*) (field->u.addr) = value;
+ *field->u.object_addr = value;
+ newinsn = AMPAMP (putstatic_resolved_obj);
}
+
+#ifdef DIRECT_THREADED
+ pc[-2].insn = newinsn;
+ pc[-1].datum = field->u.addr;
+#endif /* DIRECT_THREADED */
}
NEXT_INSN;
+#ifdef DIRECT_THREADED
+ putstatic_resolved_1:
+ *(jbyte *) AVAL () = POPI ();
+ NEXT_INSN;
+
+ putstatic_resolved_2:
+ *(jchar *) AVAL () = POPI ();
+ NEXT_INSN;
- insn_putfield:
- SAVE_PC;
+ putstatic_resolved_4:
+ *(jint *) AVAL () = POPI ();
+ NEXT_INSN;
+
+ putstatic_resolved_8:
+ *(jlong *) AVAL () = POPL ();
+ NEXT_INSN;
+
+ putstatic_resolved_obj:
+ *(jobject *) AVAL () = POPA ();
+ NEXT_INSN;
+#endif /* DIRECT_THREADED */
+
+ insn_putfield:
{
- jint fieldref_index = get2u (pc); pc += 2;
- _Jv_ResolvePoolEntry (defining_class, fieldref_index);
+ SAVE_PC();
+ jint fieldref_index = GET2U ();
+ _Jv_Linker::resolve_pool_entry (meth->defining_class, fieldref_index);
_Jv_Field *field = pool_data[fieldref_index].field;
jclass type = field->type;
(JvNewStringLatin1 ("field is static"));
jint field_offset = field->u.boffset;
- if (field_offset > 0xffff)
- throw new java::lang::VirtualMachineError;
+ void *newinsn = NULL;
if (type->isPrimitive ())
{
switch (type->size_in_bytes)
jobject obj = POPA();
NULLCHECK(obj);
*(jbyte*) ((char*)obj + field_offset) = value;
+ newinsn = AMPAMP (putfield_resolved_1);
break;
}
jobject obj = POPA();
NULLCHECK(obj);
*(jchar*) ((char*)obj + field_offset) = value;
+ newinsn = AMPAMP (putfield_resolved_2);
break;
}
jobject obj = POPA();
NULLCHECK(obj);
*(jint*) ((char*)obj + field_offset) = value;
+ newinsn = AMPAMP (putfield_resolved_4);
break;
}
jobject obj = POPA();
NULLCHECK(obj);
*(jlong*) ((char*)obj + field_offset) = value;
+ newinsn = AMPAMP (putfield_resolved_8);
break;
}
}
jobject obj = POPA();
NULLCHECK(obj);
*(jobject*) ((char*)obj + field_offset) = value;
+ newinsn = AMPAMP (putfield_resolved_obj);
}
+
+#ifdef DIRECT_THREADED
+ pc[-2].insn = newinsn;
+ pc[-1].int_val = field_offset;
+#endif /* DIRECT_THREADED */
+ }
+ NEXT_INSN;
+
+#ifdef DIRECT_THREADED
+ putfield_resolved_1:
+ {
+ jint val = POPI ();
+ char *obj = (char *) POPA ();
+ NULLCHECK (obj);
+ *(jbyte *) (obj + INTVAL ()) = val;
+ }
+ NEXT_INSN;
+
+ putfield_resolved_2:
+ {
+ jint val = POPI ();
+ char *obj = (char *) POPA ();
+ NULLCHECK (obj);
+ *(jchar *) (obj + INTVAL ()) = val;
+ }
+ NEXT_INSN;
+
+ putfield_resolved_4:
+ {
+ jint val = POPI ();
+ char *obj = (char *) POPA ();
+ NULLCHECK (obj);
+ *(jint *) (obj + INTVAL ()) = val;
+ }
+ NEXT_INSN;
+
+ putfield_resolved_8:
+ {
+ jlong val = POPL ();
+ char *obj = (char *) POPA ();
+ NULLCHECK (obj);
+ *(jlong *) (obj + INTVAL ()) = val;
}
NEXT_INSN;
- insn_invokespecial:
- SAVE_PC;
+ putfield_resolved_obj:
{
- int index = get2u (pc); pc += 2;
+ jobject val = POPA ();
+ char *obj = (char *) POPA ();
+ NULLCHECK (obj);
+ *(jobject *) (obj + INTVAL ()) = val;
+ }
+ NEXT_INSN;
+#endif /* DIRECT_THREADED */
- rmeth = (_Jv_ResolvePoolEntry (defining_class, index)).rmethod;
+ insn_invokespecial:
+ {
+ SAVE_PC();
+ int index = GET2U ();
+
+ rmeth = (_Jv_Linker::resolve_pool_entry (meth->defining_class,
+ index)).rmethod;
sp -= rmeth->stack_item_count;
- NULLCHECK (sp[0].o);
+ // We don't use NULLCHECK here because we can't rely on that
+ // working for <init>. So instead we do an explicit test.
+ if (! sp[0].o)
+ {
+ SAVE_PC();
+ throw_null_pointer_exception ();
+ }
fun = (void (*)()) rmeth->method->ncode;
+
+#ifdef DIRECT_THREADED
+ // Rewrite instruction so that we use a faster pre-resolved
+ // method.
+ pc[-2].insn = &&invokespecial_resolved;
+ pc[-1].datum = rmeth;
+#endif /* DIRECT_THREADED */
+ }
+ goto perform_invoke;
+
+#ifdef DIRECT_THREADED
+ invokespecial_resolved:
+ {
+ SAVE_PC();
+ rmeth = (_Jv_ResolvedMethod *) AVAL ();
+ sp -= rmeth->stack_item_count;
+ // We don't use NULLCHECK here because we can't rely on that
+ // working for <init>. So instead we do an explicit test.
+ if (! sp[0].o)
+ {
+ throw_null_pointer_exception ();
+ }
+ fun = (void (*)()) rmeth->method->ncode;
}
goto perform_invoke;
+#endif /* DIRECT_THREADED */
- insn_invokestatic:
- SAVE_PC;
+ insn_invokestatic:
{
- int index = get2u (pc); pc += 2;
+ SAVE_PC();
+ int index = GET2U ();
- rmeth = (_Jv_ResolvePoolEntry (defining_class, index)).rmethod;
+ rmeth = (_Jv_Linker::resolve_pool_entry (meth->defining_class,
+ index)).rmethod;
sp -= rmeth->stack_item_count;
- _Jv_InitClass (rmeth->klass);
fun = (void (*)()) rmeth->method->ncode;
+
+#ifdef DIRECT_THREADED
+ // Rewrite instruction so that we use a faster pre-resolved
+ // method.
+ pc[-2].insn = &&invokestatic_resolved;
+ pc[-1].datum = rmeth;
+#endif /* DIRECT_THREADED */
}
goto perform_invoke;
- insn_invokeinterface:
- SAVE_PC;
+#ifdef DIRECT_THREADED
+ invokestatic_resolved:
{
- int index = get2u (pc); pc += 2;
+ SAVE_PC();
+ rmeth = (_Jv_ResolvedMethod *) AVAL ();
+ sp -= rmeth->stack_item_count;
+ fun = (void (*)()) rmeth->method->ncode;
+ }
+ goto perform_invoke;
+#endif /* DIRECT_THREADED */
- // invokeinterface has two unused bytes...
- pc += 2;
+ insn_invokeinterface:
+ {
+ SAVE_PC();
+ int index = GET2U ();
- rmeth = (_Jv_ResolvePoolEntry (defining_class, index)).rmethod;
+ rmeth = (_Jv_Linker::resolve_pool_entry (meth->defining_class,
+ index)).rmethod;
sp -= rmeth->stack_item_count;
_Jv_LookupInterfaceMethod (rcv->getClass (),
rmeth->method->name,
rmeth->method->signature);
+
+#ifdef DIRECT_THREADED
+ // Rewrite instruction so that we use a faster pre-resolved
+ // method.
+ pc[-2].insn = &&invokeinterface_resolved;
+ pc[-1].datum = rmeth;
+#else
+ // Skip dummy bytes.
+ pc += 2;
+#endif /* DIRECT_THREADED */
}
goto perform_invoke;
+#ifdef DIRECT_THREADED
+ invokeinterface_resolved:
+ {
+ SAVE_PC();
+ rmeth = (_Jv_ResolvedMethod *) AVAL ();
+ sp -= rmeth->stack_item_count;
+ jobject rcv = sp[0].o;
+ NULLCHECK (rcv);
+ fun = (void (*)())
+ _Jv_LookupInterfaceMethod (rcv->getClass (),
+ rmeth->method->name,
+ rmeth->method->signature);
+ }
+ goto perform_invoke;
+#endif /* DIRECT_THREADED */
+
+ insn_new:
+ {
+ SAVE_PC();
+ int index = GET2U ();
+ jclass klass = (_Jv_Linker::resolve_pool_entry (meth->defining_class,
+ index)).clazz;
+ /* VM spec, section 3.11.5 */
+ if ((klass->getModifiers() & Modifier::ABSTRACT)
+ || klass->isInterface())
+ throw new java::lang::InstantiationException;
+ jobject res = _Jv_AllocObject (klass);
+ PUSHA (res);
+
+#ifdef DIRECT_THREADED
+ pc[-2].insn = &&new_resolved;
+ pc[-1].datum = klass;
+#endif /* DIRECT_THREADED */
+ }
+ NEXT_INSN;
- insn_new:
- SAVE_PC;
+#ifdef DIRECT_THREADED
+ new_resolved:
{
- int index = get2u (pc); pc += 2;
- jclass klass = (_Jv_ResolvePoolEntry (defining_class, index)).clazz;
- _Jv_InitClass (klass);
- jobject res = _Jv_AllocObject (klass, klass->size_in_bytes);
+ jclass klass = (jclass) AVAL ();
+ jobject res = _Jv_AllocObject (klass);
PUSHA (res);
}
NEXT_INSN;
+#endif /* DIRECT_THREADED */
- insn_newarray:
- SAVE_PC;
+ insn_newarray:
{
- int atype = get1u (pc++);
+ int atype = GET1U ();
int size = POPI();
jobject result = _Jv_NewArray (atype, size);
PUSHA (result);
}
NEXT_INSN;
- insn_anewarray:
- SAVE_PC;
+ insn_anewarray:
{
- int index = get2u (pc); pc += 2;
- jclass klass = (_Jv_ResolvePoolEntry (defining_class, index)).clazz;
+ SAVE_PC();
+ int index = GET2U ();
+ jclass klass = (_Jv_Linker::resolve_pool_entry (meth->defining_class,
+ index)).clazz;
int size = POPI();
- _Jv_InitClass (klass);
jobject result = _Jv_NewObjectArray (size, klass, 0);
PUSHA (result);
+
+#ifdef DIRECT_THREADED
+ pc[-2].insn = &&anewarray_resolved;
+ pc[-1].datum = klass;
+#endif /* DIRECT_THREADED */
}
NEXT_INSN;
- insn_arraylength:
+#ifdef DIRECT_THREADED
+ anewarray_resolved:
+ {
+ jclass klass = (jclass) AVAL ();
+ int size = POPI ();
+ jobject result = _Jv_NewObjectArray (size, klass, 0);
+ PUSHA (result);
+ }
+ NEXT_INSN;
+#endif /* DIRECT_THREADED */
+
+ insn_arraylength:
{
__JArray *arr = (__JArray*)POPA();
NULLARRAYCHECK (arr);
}
NEXT_INSN;
- insn_athrow:
- SAVE_PC;
+ insn_athrow:
{
jobject value = POPA();
throw static_cast<jthrowable>(value);
}
NEXT_INSN;
- insn_checkcast:
- SAVE_PC;
+ insn_checkcast:
{
+ SAVE_PC();
jobject value = POPA();
- jint index = get2u (pc); pc += 2;
- jclass to = (_Jv_ResolvePoolEntry (defining_class, index)).clazz;
+ jint index = GET2U ();
+ jclass to = (_Jv_Linker::resolve_pool_entry (meth->defining_class,
+ index)).clazz;
- if (value != NULL && ! to->isInstance (value))
- {
- throw new java::lang::ClassCastException (to->getName());
- }
+ value = (jobject) _Jv_CheckCast (to, value);
PUSHA (value);
+
+#ifdef DIRECT_THREADED
+ pc[-2].insn = &&checkcast_resolved;
+ pc[-1].datum = to;
+#endif /* DIRECT_THREADED */
}
NEXT_INSN;
- insn_instanceof:
- SAVE_PC;
+#ifdef DIRECT_THREADED
+ checkcast_resolved:
{
+ SAVE_PC();
+ jobject value = POPA ();
+ jclass to = (jclass) AVAL ();
+ value = (jobject) _Jv_CheckCast (to, value);
+ PUSHA (value);
+ }
+ NEXT_INSN;
+#endif /* DIRECT_THREADED */
+
+ insn_instanceof:
+ {
+ SAVE_PC();
jobject value = POPA();
- jint index = get2u (pc); pc += 2;
- jclass to = (_Jv_ResolvePoolEntry (defining_class, index)).clazz;
+ jint index = GET2U ();
+ jclass to = (_Jv_Linker::resolve_pool_entry (meth->defining_class,
+ index)).clazz;
+ PUSHI (to->isInstance (value));
+
+#ifdef DIRECT_THREADED
+ pc[-2].insn = &&instanceof_resolved;
+ pc[-1].datum = to;
+#endif /* DIRECT_THREADED */
+ }
+ NEXT_INSN;
+
+#ifdef DIRECT_THREADED
+ instanceof_resolved:
+ {
+ jobject value = POPA ();
+ jclass to = (jclass) AVAL ();
PUSHI (to->isInstance (value));
}
NEXT_INSN;
+#endif /* DIRECT_THREADED */
- insn_monitorenter:
- SAVE_PC;
+ insn_monitorenter:
{
jobject value = POPA();
NULLCHECK(value);
}
NEXT_INSN;
- insn_monitorexit:
- SAVE_PC;
+ insn_monitorexit:
{
jobject value = POPA();
NULLCHECK(value);
}
NEXT_INSN;
- insn_ifnull:
+ insn_ifnull:
{
- unsigned char* base_pc = pc-1;
- jint offset = get2s (pc); pc += 2;
jobject val = POPA();
if (val == NULL)
- pc = base_pc+offset;
+ TAKE_GOTO;
+ else
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_ifnonnull:
+ insn_ifnonnull:
{
- unsigned char* base_pc = pc-1;
- jint offset = get2s (pc); pc += 2;
jobject val = POPA();
if (val != NULL)
- pc = base_pc+offset;
+ TAKE_GOTO;
+ else
+ SKIP_GOTO;
}
NEXT_INSN;
- insn_wide:
- SAVE_PC;
+ insn_multianewarray:
+ {
+ SAVE_PC();
+ int kind_index = GET2U ();
+ int dim = GET1U ();
+
+ jclass type
+ = (_Jv_Linker::resolve_pool_entry (meth->defining_class,
+ kind_index)).clazz;
+ jint *sizes = (jint*) __builtin_alloca (sizeof (jint)*dim);
+
+ for (int i = dim - 1; i >= 0; i--)
+ {
+ sizes[i] = POPI ();
+ }
+
+ jobject res = _Jv_NewMultiArray (type,dim, sizes);
+
+ PUSHA (res);
+ }
+ NEXT_INSN;
+
+#ifndef DIRECT_THREADED
+ insn_wide:
{
jint the_mod_op = get1u (pc++);
jint wide = get2u (pc); pc += 2;
LOADI (wide);
NEXT_INSN;
+ case op_fload:
+ LOADF (wide);
+ NEXT_INSN;
+
case op_aload:
LOADA (wide);
NEXT_INSN;
}
}
+#endif /* DIRECT_THREADED */
+ }
+ catch (java::lang::Throwable *ex)
+ {
+#ifdef DIRECT_THREADED
+ void *logical_pc = (void *) ((insn_slot *) pc - 1);
+#else
+ int logical_pc = pc - 1 - bytecode ();
+#endif
+ _Jv_InterpException *exc = meth->exceptions ();
+ jclass exc_class = ex->getClass ();
- insn_multianewarray:
- SAVE_PC;
- {
- int kind_index = get2u (pc); pc += 2;
- int dim = get1u (pc); pc += 1;
+ for (int i = 0; i < meth->exc_count; i++)
+ {
+ if (PCVAL (exc[i].start_pc) <= logical_pc
+ && logical_pc < PCVAL (exc[i].end_pc))
+ {
+#ifdef DIRECT_THREADED
+ jclass handler = (jclass) exc[i].handler_type.p;
+#else
+ jclass handler = NULL;
+ if (exc[i].handler_type.i != 0)
+ handler = (_Jv_Linker::resolve_pool_entry (defining_class,
+ exc[i].handler_type.i)).clazz;
+#endif /* DIRECT_THREADED */
- jclass type
- = (_Jv_ResolvePoolEntry (defining_class, kind_index)).clazz;
- _Jv_InitClass (type);
- jint *sizes = (jint*) __builtin_alloca (sizeof (jint)*dim);
+ if (handler == NULL || handler->isAssignableFrom (exc_class))
+ {
+#ifdef DIRECT_THREADED
+ pc = (insn_slot *) exc[i].handler_pc.p;
+#else
+ pc = bytecode () + exc[i].handler_pc.i;
+#endif /* DIRECT_THREADED */
+ sp = stack;
+ sp++->o = ex; // Push exception.
+ NEXT_INSN;
+ }
+ }
+ }
- for (int i = dim - 1; i >= 0; i--)
- {
- sizes[i] = POPI ();
- }
+ // No handler, so re-throw.
+ throw ex;
+ }
+}
- jobject res = _Jv_NewMultiArray (type,dim, sizes);
+static void
+throw_internal_error (const char *msg)
+{
+ throw new java::lang::InternalError (JvNewStringLatin1 (msg));
+}
- PUSHA (res);
- }
- NEXT_INSN;
+static void
+throw_incompatible_class_change_error (jstring msg)
+{
+ throw new java::lang::IncompatibleClassChangeError (msg);
+}
+
+static void
+throw_null_pointer_exception ()
+{
+ throw new java::lang::NullPointerException;
+}
- insn_goto_w:
+/* Look up source code line number for given bytecode (or direct threaded
+ interpreter) PC. */
+int
+_Jv_InterpMethod::get_source_line(pc_t mpc)
+{
+ int line = line_table_len > 0 ? line_table[0].line : -1;
+ for (int i = 1; i < line_table_len; i++)
+ if (line_table[i].pc > mpc)
+ break;
+ else
+ line = line_table[i].line;
+
+ return line;
+}
+
+/** Do static initialization for fields with a constant initializer */
+void
+_Jv_InitField (jobject obj, jclass klass, int index)
+{
+ using namespace java::lang::reflect;
+
+ if (obj != 0 && klass == 0)
+ klass = obj->getClass ();
+
+ if (!_Jv_IsInterpretedClass (klass))
+ return;
+
+ _Jv_InterpClass *iclass = (_Jv_InterpClass*)klass->aux_info;
+
+ _Jv_Field * field = (&klass->fields[0]) + index;
+
+ if (index > klass->field_count)
+ throw_internal_error ("field out of range");
+
+ int init = iclass->field_initializers[index];
+ if (init == 0)
+ return;
+
+ _Jv_Constants *pool = &klass->constants;
+ int tag = pool->tags[init];
+
+ if (! field->isResolved ())
+ throw_internal_error ("initializing unresolved field");
+
+ if (obj==0 && ((field->flags & Modifier::STATIC) == 0))
+ throw_internal_error ("initializing non-static field with no object");
+
+ void *addr = 0;
+
+ if ((field->flags & Modifier::STATIC) != 0)
+ addr = (void*) field->u.addr;
+ else
+ addr = (void*) (((char*)obj) + field->u.boffset);
+
+ switch (tag)
+ {
+ case JV_CONSTANT_String:
{
- unsigned char* base_pc = pc-1;
- int offset = get4 (pc); pc += 4;
- pc = base_pc+offset;
+ jstring str;
+ str = _Jv_NewStringUtf8Const (pool->data[init].utf8);
+ pool->data[init].string = str;
+ pool->tags[init] = JV_CONSTANT_ResolvedString;
}
- NEXT_INSN;
+ /* fall through */
- insn_jsr_w:
+ case JV_CONSTANT_ResolvedString:
+ if (! (field->type == &java::lang::String::class$
+ || field->type == &java::lang::Class::class$))
+ throw_class_format_error ("string initialiser to non-string field");
+
+ *(jstring*)addr = pool->data[init].string;
+ break;
+
+ case JV_CONSTANT_Integer:
{
- unsigned char* base_pc = pc-1;
- int offset = get4 (pc); pc += 4;
- PUSHA((jobject)pc);
- pc = base_pc+offset;
- }
- NEXT_INSN;
+ int value = pool->data[init].i;
+
+ if (field->type == JvPrimClass (boolean))
+ *(jboolean*)addr = (jboolean)value;
+
+ else if (field->type == JvPrimClass (byte))
+ *(jbyte*)addr = (jbyte)value;
+
+ else if (field->type == JvPrimClass (char))
+ *(jchar*)addr = (jchar)value;
+
+ else if (field->type == JvPrimClass (short))
+ *(jshort*)addr = (jshort)value;
+
+ else if (field->type == JvPrimClass (int))
+ *(jint*)addr = (jint)value;
+
+ else
+ throw_class_format_error ("erroneous field initializer");
+ }
+ break;
+
+ case JV_CONSTANT_Long:
+ if (field->type != JvPrimClass (long))
+ throw_class_format_error ("erroneous field initializer");
+
+ *(jlong*)addr = _Jv_loadLong (&pool->data[init]);
+ break;
+
+ case JV_CONSTANT_Float:
+ if (field->type != JvPrimClass (float))
+ throw_class_format_error ("erroneous field initializer");
+
+ *(jfloat*)addr = pool->data[init].f;
+ break;
+
+ case JV_CONSTANT_Double:
+ if (field->type != JvPrimClass (double))
+ throw_class_format_error ("erroneous field initializer");
+
+ *(jdouble*)addr = _Jv_loadDouble (&pool->data[init]);
+ break;
+
+ default:
+ throw_class_format_error ("erroneous field initializer");
+ }
}
+inline static unsigned char*
+skip_one_type (unsigned char* ptr)
+{
+ int ch = *ptr++;
-static void
-throw_internal_error (char *msg)
+ while (ch == '[')
+ {
+ ch = *ptr++;
+ }
+
+ if (ch == 'L')
+ {
+ do { ch = *ptr++; } while (ch != ';');
+ }
+
+ return ptr;
+}
+
+static ffi_type*
+get_ffi_type_from_signature (unsigned char* ptr)
{
- throw new java::lang::InternalError (JvNewStringLatin1 (msg));
+ switch (*ptr)
+ {
+ case 'L':
+ case '[':
+ return &ffi_type_pointer;
+ break;
+
+ case 'Z':
+ // On some platforms a bool is a byte, on others an int.
+ if (sizeof (jboolean) == sizeof (jbyte))
+ return &ffi_type_sint8;
+ else
+ {
+ JvAssert (sizeof (jbyte) == sizeof (jint));
+ return &ffi_type_sint32;
+ }
+ break;
+
+ case 'B':
+ return &ffi_type_sint8;
+ break;
+
+ case 'C':
+ return &ffi_type_uint16;
+ break;
+
+ case 'S':
+ return &ffi_type_sint16;
+ break;
+
+ case 'I':
+ return &ffi_type_sint32;
+ break;
+
+ case 'J':
+ return &ffi_type_sint64;
+ break;
+
+ case 'F':
+ return &ffi_type_float;
+ break;
+
+ case 'D':
+ return &ffi_type_double;
+ break;
+
+ case 'V':
+ return &ffi_type_void;
+ break;
+ }
+
+ throw_internal_error ("unknown type in signature");
}
-static void
-throw_incompatible_class_change_error (jstring msg)
+/* this function yields the number of actual arguments, that is, if the
+ * function is non-static, then one is added to the number of elements
+ * found in the signature */
+
+int
+_Jv_count_arguments (_Jv_Utf8Const *signature,
+ jboolean staticp)
{
- throw new java::lang::IncompatibleClassChangeError (msg);
+ unsigned char *ptr = (unsigned char*) signature->chars();
+ int arg_count = staticp ? 0 : 1;
+
+ /* first, count number of arguments */
+
+ // skip '('
+ ptr++;
+
+ // count args
+ while (*ptr != ')')
+ {
+ ptr = skip_one_type (ptr);
+ arg_count += 1;
+ }
+
+ return arg_count;
}
-#ifndef HANDLE_SEGV
-static java::lang::NullPointerException *null_pointer_exc;
-static void
-throw_null_pointer_exception ()
+/* This beast will build a cif, given the signature. Memory for
+ * the cif itself and for the argument types must be allocated by the
+ * caller.
+ */
+
+static int
+init_cif (_Jv_Utf8Const* signature,
+ int arg_count,
+ jboolean staticp,
+ ffi_cif *cif,
+ ffi_type **arg_types,
+ ffi_type **rtype_p)
{
- if (null_pointer_exc == NULL)
- null_pointer_exc = new java::lang::NullPointerException;
+ unsigned char *ptr = (unsigned char*) signature->chars();
- throw null_pointer_exc;
+ int arg_index = 0; // arg number
+ int item_count = 0; // stack-item count
+
+ // setup receiver
+ if (!staticp)
+ {
+ arg_types[arg_index++] = &ffi_type_pointer;
+ item_count += 1;
+ }
+
+ // skip '('
+ ptr++;
+
+ // assign arg types
+ while (*ptr != ')')
+ {
+ arg_types[arg_index++] = get_ffi_type_from_signature (ptr);
+
+ if (*ptr == 'J' || *ptr == 'D')
+ item_count += 2;
+ else
+ item_count += 1;
+
+ ptr = skip_one_type (ptr);
+ }
+
+ // skip ')'
+ ptr++;
+ ffi_type *rtype = get_ffi_type_from_signature (ptr);
+
+ ptr = skip_one_type (ptr);
+ if (ptr != (unsigned char*)signature->chars() + signature->len())
+ throw_internal_error ("did not find end of signature");
+
+ if (ffi_prep_cif (cif, FFI_DEFAULT_ABI,
+ arg_count, rtype, arg_types) != FFI_OK)
+ throw_internal_error ("ffi_prep_cif failed");
+
+ if (rtype_p != NULL)
+ *rtype_p = rtype;
+
+ return item_count;
}
+
+#if FFI_NATIVE_RAW_API
+# define FFI_PREP_RAW_CLOSURE ffi_prep_raw_closure
+# define FFI_RAW_SIZE ffi_raw_size
+#else
+# define FFI_PREP_RAW_CLOSURE ffi_prep_java_raw_closure
+# define FFI_RAW_SIZE ffi_java_raw_size
#endif
+/* we put this one here, and not in interpret.cc because it
+ * calls the utility routines _Jv_count_arguments
+ * which are static to this module. The following struct defines the
+ * layout we use for the stubs, it's only used in the ncode method. */
+
+typedef struct {
+ ffi_raw_closure closure;
+ ffi_cif cif;
+ ffi_type *arg_types[0];
+} ncode_closure;
+
+typedef void (*ffi_closure_fun) (ffi_cif*,void*,ffi_raw*,void*);
+
+void *
+_Jv_InterpMethod::ncode ()
+{
+ using namespace java::lang::reflect;
+
+ if (self->ncode != 0)
+ return self->ncode;
+
+ jboolean staticp = (self->accflags & Modifier::STATIC) != 0;
+ int arg_count = _Jv_count_arguments (self->signature, staticp);
+
+ ncode_closure *closure =
+ (ncode_closure*)_Jv_AllocBytes (sizeof (ncode_closure)
+ + arg_count * sizeof (ffi_type*));
+
+ init_cif (self->signature,
+ arg_count,
+ staticp,
+ &closure->cif,
+ &closure->arg_types[0],
+ NULL);
+
+ ffi_closure_fun fun;
+
+ args_raw_size = FFI_RAW_SIZE (&closure->cif);
+
+ JvAssert ((self->accflags & Modifier::NATIVE) == 0);
+
+ if ((self->accflags & Modifier::SYNCHRONIZED) != 0)
+ {
+ if (staticp)
+ fun = (ffi_closure_fun)&_Jv_InterpMethod::run_synch_class;
+ else
+ fun = (ffi_closure_fun)&_Jv_InterpMethod::run_synch_object;
+ }
+ else
+ {
+ if (staticp)
+ fun = (ffi_closure_fun)&_Jv_InterpMethod::run_class;
+ else
+ fun = (ffi_closure_fun)&_Jv_InterpMethod::run_normal;
+ }
+
+ FFI_PREP_RAW_CLOSURE (&closure->closure,
+ &closure->cif,
+ fun,
+ (void*)this);
+
+ self->ncode = (void*)closure;
+ return self->ncode;
+}
+
+#ifdef DIRECT_THREADED
+/* Find the index of the given insn in the array of insn slots
+ for this method. Returns -1 if not found. */
+jlong
+_Jv_InterpMethod::insn_index (pc_t pc)
+{
+ jlong left = 0;
+ jlong right = number_insn_slots;
+ insn_slot* slots = reinterpret_cast<insn_slot*> (prepared);
+
+ while (right >= 0)
+ {
+ jlong mid = (left + right) / 2;
+ if (&slots[mid] == pc)
+ return mid;
+
+ if (pc < &slots[mid])
+ right = mid - 1;
+ else
+ left = mid + 1;
+ }
+
+ return -1;
+}
+#endif // DIRECT_THREADED
+
+void
+_Jv_InterpMethod::get_line_table (jlong& start, jlong& end,
+ jintArray& line_numbers,
+ jlongArray& code_indices)
+{
+#ifdef DIRECT_THREADED
+ /* For the DIRECT_THREADED case, if the method has not yet been
+ * compiled, the linetable will change to insn slots instead of
+ * bytecode PCs. It is probably easiest, in this case, to simply
+ * compile the method and guarantee that we are using insn
+ * slots.
+ */
+ _Jv_CompileMethod (this);
+
+ if (line_table_len > 0)
+ {
+ start = 0;
+ end = number_insn_slots;
+ line_numbers = JvNewIntArray (line_table_len);
+ code_indices = JvNewLongArray (line_table_len);
+
+ jint* lines = elements (line_numbers);
+ jlong* indices = elements (code_indices);
+ for (int i = 0; i < line_table_len; ++i)
+ {
+ lines[i] = line_table[i].line;
+ indices[i] = insn_index (line_table[i].pc);
+ }
+ }
+#else // !DIRECT_THREADED
+ if (line_table_len > 0)
+ {
+ start = 0;
+ end = code_length;
+ line_numbers = JvNewIntArray (line_table_len);
+ code_indices = JvNewLongArray (line_table_len);
+
+ jint* lines = elements (line_numbers);
+ jlong* indices = elements (code_indices);
+ for (int i = 0; i < line_table_len; ++i)
+ {
+ lines[i] = line_table[i].line;
+ indices[i] = (jlong) line_table[i].bytecode_pc;
+ }
+ }
+#endif // !DIRECT_THREADED
+}
+
+void *
+_Jv_JNIMethod::ncode ()
+{
+ using namespace java::lang::reflect;
+
+ if (self->ncode != 0)
+ return self->ncode;
+
+ jboolean staticp = (self->accflags & Modifier::STATIC) != 0;
+ int arg_count = _Jv_count_arguments (self->signature, staticp);
+
+ ncode_closure *closure =
+ (ncode_closure*)_Jv_AllocBytes (sizeof (ncode_closure)
+ + arg_count * sizeof (ffi_type*));
+
+ ffi_type *rtype;
+ init_cif (self->signature,
+ arg_count,
+ staticp,
+ &closure->cif,
+ &closure->arg_types[0],
+ &rtype);
+
+ ffi_closure_fun fun;
+
+ args_raw_size = FFI_RAW_SIZE (&closure->cif);
+
+ // Initialize the argument types and CIF that represent the actual
+ // underlying JNI function.
+ int extra_args = 1;
+ if ((self->accflags & Modifier::STATIC))
+ ++extra_args;
+ jni_arg_types = (ffi_type **) _Jv_AllocBytes ((extra_args + arg_count)
+ * sizeof (ffi_type *));
+ int offset = 0;
+ jni_arg_types[offset++] = &ffi_type_pointer;
+ if ((self->accflags & Modifier::STATIC))
+ jni_arg_types[offset++] = &ffi_type_pointer;
+ memcpy (&jni_arg_types[offset], &closure->arg_types[0],
+ arg_count * sizeof (ffi_type *));
+
+ if (ffi_prep_cif (&jni_cif, _Jv_platform_ffi_abi,
+ extra_args + arg_count, rtype,
+ jni_arg_types) != FFI_OK)
+ throw_internal_error ("ffi_prep_cif failed for JNI function");
+
+ JvAssert ((self->accflags & Modifier::NATIVE) != 0);
+
+ // FIXME: for now we assume that all native methods for
+ // interpreted code use JNI.
+ fun = (ffi_closure_fun) &_Jv_JNIMethod::call;
+
+ FFI_PREP_RAW_CLOSURE (&closure->closure,
+ &closure->cif,
+ fun,
+ (void*) this);
+
+ self->ncode = (void *) closure;
+ return self->ncode;
+}
+
+static void
+throw_class_format_error (jstring msg)
+{
+ throw (msg
+ ? new java::lang::ClassFormatError (msg)
+ : new java::lang::ClassFormatError);
+}
+
+static void
+throw_class_format_error (const char *msg)
+{
+ throw_class_format_error (JvNewStringLatin1 (msg));
+}
+
+\f
+
+void
+_Jv_InterpreterEngine::do_verify (jclass klass)
+{
+ _Jv_InterpClass *iclass = (_Jv_InterpClass *) klass->aux_info;
+ for (int i = 0; i < klass->method_count; i++)
+ {
+ using namespace java::lang::reflect;
+ _Jv_MethodBase *imeth = iclass->interpreted_methods[i];
+ _Jv_ushort accflags = klass->methods[i].accflags;
+ if ((accflags & (Modifier::NATIVE | Modifier::ABSTRACT)) == 0)
+ {
+ _Jv_InterpMethod *im = reinterpret_cast<_Jv_InterpMethod *> (imeth);
+ _Jv_VerifyMethod (im);
+ }
+ }
+}
+
+void
+_Jv_InterpreterEngine::do_create_ncode (jclass klass)
+{
+ _Jv_InterpClass *iclass = (_Jv_InterpClass *) klass->aux_info;
+ for (int i = 0; i < klass->method_count; i++)
+ {
+ // Just skip abstract methods. This is particularly important
+ // because we don't resize the interpreted_methods array when
+ // miranda methods are added to it.
+ if ((klass->methods[i].accflags
+ & java::lang::reflect::Modifier::ABSTRACT)
+ != 0)
+ continue;
+
+ _Jv_MethodBase *imeth = iclass->interpreted_methods[i];
+
+ if ((klass->methods[i].accflags & java::lang::reflect::Modifier::NATIVE)
+ != 0)
+ {
+ // You might think we could use a virtual `ncode' method in
+ // the _Jv_MethodBase and unify the native and non-native
+ // cases. Well, we can't, because we don't allocate these
+ // objects using `new', and thus they don't get a vtable.
+ _Jv_JNIMethod *jnim = reinterpret_cast<_Jv_JNIMethod *> (imeth);
+ klass->methods[i].ncode = jnim->ncode ();
+ }
+ else if (imeth != 0) // it could be abstract
+ {
+ _Jv_InterpMethod *im = reinterpret_cast<_Jv_InterpMethod *> (imeth);
+ klass->methods[i].ncode = im->ncode ();
+ }
+ }
+}
+
+void
+_Jv_InterpreterEngine::do_allocate_static_fields (jclass klass,
+ int pointer_size,
+ int other_size)
+{
+ _Jv_InterpClass *iclass = (_Jv_InterpClass *) klass->aux_info;
+
+ // Splitting the allocations here lets us scan reference fields and
+ // avoid scanning non-reference fields. How reference fields are
+ // scanned is a bit tricky: we allocate using _Jv_AllocRawObj, which
+ // means that this memory will be scanned conservatively (same
+ // difference, since we know all the contents here are pointers).
+ // Then we put pointers into this memory into the 'fields'
+ // structure. Most of these are interior pointers, which is ok (but
+ // even so the pointer to the first reference field will be used and
+ // that is not an interior pointer). The 'fields' array is also
+ // allocated with _Jv_AllocRawObj (see defineclass.cc), so it will
+ // be scanned. A pointer to this array is held by Class and thus
+ // seen by the collector.
+ char *reference_fields = (char *) _Jv_AllocRawObj (pointer_size);
+ char *non_reference_fields = (char *) _Jv_AllocBytes (other_size);
+
+ for (int i = 0; i < klass->field_count; i++)
+ {
+ _Jv_Field *field = &klass->fields[i];
+
+ if ((field->flags & java::lang::reflect::Modifier::STATIC) == 0)
+ continue;
+
+ char *base = field->isRef() ? reference_fields : non_reference_fields;
+ field->u.addr = base + field->u.boffset;
+
+ if (iclass->field_initializers[i] != 0)
+ {
+ _Jv_Linker::resolve_field (field, klass->loader);
+ _Jv_InitField (0, klass, i);
+ }
+ }
+
+ // Now we don't need the field_initializers anymore, so let the
+ // collector get rid of it.
+ iclass->field_initializers = 0;
+}
+
+_Jv_ResolvedMethod *
+_Jv_InterpreterEngine::do_resolve_method (_Jv_Method *method, jclass klass,
+ jboolean staticp)
+{
+ int arg_count = _Jv_count_arguments (method->signature, staticp);
+
+ _Jv_ResolvedMethod* result = (_Jv_ResolvedMethod*)
+ _Jv_AllocBytes (sizeof (_Jv_ResolvedMethod)
+ + arg_count*sizeof (ffi_type*));
+
+ result->stack_item_count
+ = init_cif (method->signature,
+ arg_count,
+ staticp,
+ &result->cif,
+ &result->arg_types[0],
+ NULL);
+
+ result->method = method;
+ result->klass = klass;
+
+ return result;
+}
+
+void
+_Jv_InterpreterEngine::do_post_miranda_hook (jclass klass)
+{
+ _Jv_InterpClass *iclass = (_Jv_InterpClass *) klass->aux_info;
+ for (int i = 0; i < klass->method_count; i++)
+ {
+ // Just skip abstract methods. This is particularly important
+ // because we don't resize the interpreted_methods array when
+ // miranda methods are added to it.
+ if ((klass->methods[i].accflags
+ & java::lang::reflect::Modifier::ABSTRACT)
+ != 0)
+ continue;
+ // Miranda method additions mean that the `methods' array moves.
+ // We cache a pointer into this array, so we have to update.
+ iclass->interpreted_methods[i]->self = &klass->methods[i];
+ }
+}
+
+#ifdef DIRECT_THREADED
+void
+_Jv_CompileMethod (_Jv_InterpMethod* method)
+{
+ if (method->prepared == NULL)
+ _Jv_InterpMethod::run (NULL, NULL, method);
+}
+#endif // DIRECT_THREADED
+
#endif // INTERPRETER
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