| 1 | // interpret.cc - Code for the interpreter
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| 2 |
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| 3 | /* Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation
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| 4 |
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| 5 | This file is part of libgcj.
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| 6 |
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| 7 | This software is copyrighted work licensed under the terms of the
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| 8 | Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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| 9 | details. */
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| 10 |
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| 11 | /* Author: Kresten Krab Thorup <[email protected]> */
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| 12 |
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| 13 | #include <config.h>
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| 14 |
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| 15 | // Define this to get the direct-threaded interpreter. If undefined,
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| 16 | // we revert to a basic bytecode interpreter. The former is faster
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| 17 | // but uses more memory.
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| 18 | #define DIRECT_THREADED
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| 19 |
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| 20 | #pragma implementation "java-interp.h"
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| 21 |
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| 22 | #include <jvm.h>
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| 23 | #include <java-cpool.h>
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| 24 | #include <java-interp.h>
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| 25 | #include <java/lang/System.h>
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| 26 | #include <java/lang/String.h>
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| 27 | #include <java/lang/Integer.h>
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| 28 | #include <java/lang/Long.h>
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| 29 | #include <java/lang/StringBuffer.h>
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| 30 | #include <java/lang/Class.h>
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| 31 | #include <java/lang/reflect/Modifier.h>
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| 32 | #include <java/lang/ClassCastException.h>
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| 33 | #include <java/lang/VirtualMachineError.h>
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| 34 | #include <java/lang/InternalError.h>
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| 35 | #include <java/lang/NullPointerException.h>
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| 36 | #include <java/lang/ArithmeticException.h>
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| 37 | #include <java/lang/IncompatibleClassChangeError.h>
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| 38 | #include <java/lang/Thread.h>
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| 39 | #include <java-insns.h>
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| 40 | #include <java-signal.h>
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| 41 |
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| 42 | #ifdef INTERPRETER
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| 43 |
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| 44 | #include <stdlib.h>
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| 45 |
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| 46 | using namespace gcj;
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| 47 |
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| 48 | static void throw_internal_error (char *msg)
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| 49 | __attribute__ ((__noreturn__));
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| 50 | static void throw_incompatible_class_change_error (jstring msg)
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| 51 | __attribute__ ((__noreturn__));
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| 52 | #ifndef HANDLE_SEGV
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| 53 | static void throw_null_pointer_exception ()
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| 54 | __attribute__ ((__noreturn__));
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| 55 | #endif
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| 56 |
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| 57 | extern "C" double __ieee754_fmod (double,double);
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| 58 |
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| 59 | // This represents a single slot in the "compiled" form of the
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| 60 | // bytecode.
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| 61 | union insn_slot
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| 62 | {
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| 63 | // Address of code.
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| 64 | void *insn;
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| 65 | // An integer value used by an instruction.
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| 66 | jint int_val;
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| 67 | // A pointer value used by an instruction.
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| 68 | void *datum;
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| 69 | };
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| 70 |
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| 71 | // The type of the PC depends on whether we're doing direct threading
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| 72 | // or a more ordinary bytecode interpreter.
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| 73 | #ifdef DIRECT_THREADED
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| 74 | typedef insn_slot *pc_t;
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| 75 | #else
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| 76 | typedef unsigned char *pc_t;
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| 77 | #endif
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| 78 |
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| 79 | static inline void dupx (_Jv_word *sp, int n, int x)
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| 80 | {
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| 81 | // first "slide" n+x elements n to the right
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| 82 | int top = n-1;
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| 83 | for (int i = 0; i < n+x; i++)
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| 84 | {
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| 85 | sp[(top-i)] = sp[(top-i)-n];
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| 86 | }
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| 87 |
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| 88 | // next, copy the n top elements, n+x down
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| 89 | for (int i = 0; i < n; i++)
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| 90 | {
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| 91 | sp[top-(n+x)-i] = sp[top-i];
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| 92 | }
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| 93 |
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| 94 | };
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| 95 |
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| 96 | // Used to convert from floating types to integral types.
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| 97 | template<typename TO, typename FROM>
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| 98 | static inline TO
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| 99 | convert (FROM val, TO min, TO max)
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| 100 | {
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| 101 | TO ret;
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| 102 | if (val >= (FROM) max)
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| 103 | ret = max;
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| 104 | else if (val <= (FROM) min)
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| 105 | ret = min;
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| 106 | else if (val != val)
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| 107 | ret = 0;
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| 108 | else
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| 109 | ret = (TO) val;
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| 110 | return ret;
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| 111 | }
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| 112 |
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| 113 | #define PUSHA(V) (sp++)->o = (V)
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| 114 | #define PUSHI(V) (sp++)->i = (V)
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| 115 | #define PUSHF(V) (sp++)->f = (V)
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| 116 | #if SIZEOF_VOID_P == 8
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| 117 | # define PUSHL(V) (sp->l = (V), sp += 2)
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| 118 | # define PUSHD(V) (sp->d = (V), sp += 2)
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| 119 | #else
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| 120 | # define PUSHL(V) do { _Jv_word2 w2; w2.l=(V); \
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| 121 | (sp++)->ia[0] = w2.ia[0]; \
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| 122 | (sp++)->ia[0] = w2.ia[1]; } while (0)
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| 123 | # define PUSHD(V) do { _Jv_word2 w2; w2.d=(V); \
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| 124 | (sp++)->ia[0] = w2.ia[0]; \
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| 125 | (sp++)->ia[0] = w2.ia[1]; } while (0)
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| 126 | #endif
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| 127 |
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| 128 | #define POPA() ((--sp)->o)
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| 129 | #define POPI() ((jint) (--sp)->i) // cast since it may be promoted
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| 130 | #define POPF() ((jfloat) (--sp)->f)
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| 131 | #if SIZEOF_VOID_P == 8
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| 132 | # define POPL() (sp -= 2, (jlong) sp->l)
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| 133 | # define POPD() (sp -= 2, (jdouble) sp->d)
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| 134 | #else
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| 135 | # define POPL() ({ _Jv_word2 w2; \
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| 136 | w2.ia[1] = (--sp)->ia[0]; \
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| 137 | w2.ia[0] = (--sp)->ia[0]; w2.l; })
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| 138 | # define POPD() ({ _Jv_word2 w2; \
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| 139 | w2.ia[1] = (--sp)->ia[0]; \
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| 140 | w2.ia[0] = (--sp)->ia[0]; w2.d; })
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| 141 | #endif
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| 142 |
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| 143 | #define LOADA(I) (sp++)->o = locals[I].o
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| 144 | #define LOADI(I) (sp++)->i = locals[I].i
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| 145 | #define LOADF(I) (sp++)->f = locals[I].f
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| 146 | #if SIZEOF_VOID_P == 8
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| 147 | # define LOADL(I) (sp->l = locals[I].l, sp += 2)
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| 148 | # define LOADD(I) (sp->d = locals[I].d, sp += 2)
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| 149 | #else
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| 150 | # define LOADL(I) do { jint __idx = (I); \
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| 151 | (sp++)->ia[0] = locals[__idx].ia[0]; \
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| 152 | (sp++)->ia[0] = locals[__idx+1].ia[0]; \
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| 153 | } while (0)
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| 154 | # define LOADD(I) LOADL(I)
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| 155 | #endif
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| 156 |
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| 157 | #define STOREA(I) locals[I].o = (--sp)->o
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| 158 | #define STOREI(I) locals[I].i = (--sp)->i
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| 159 | #define STOREF(I) locals[I].f = (--sp)->f
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| 160 | #if SIZEOF_VOID_P == 8
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| 161 | # define STOREL(I) (sp -= 2, locals[I].l = sp->l)
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| 162 | # define STORED(I) (sp -= 2, locals[I].d = sp->d)
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| 163 | #else
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| 164 | # define STOREL(I) do { jint __idx = (I); \
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| 165 | locals[__idx+1].ia[0] = (--sp)->ia[0]; \
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| 166 | locals[__idx].ia[0] = (--sp)->ia[0]; \
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| 167 | } while (0)
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| 168 | # define STORED(I) STOREL(I)
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| 169 | #endif
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| 170 |
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| 171 | #define PEEKI(I) (locals+(I))->i
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| 172 | #define PEEKA(I) (locals+(I))->o
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| 173 |
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| 174 | #define POKEI(I,V) ((locals+(I))->i = (V))
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| 175 |
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| 176 |
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| 177 | #define BINOPI(OP) { \
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| 178 | jint value2 = POPI(); \
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| 179 | jint value1 = POPI(); \
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| 180 | PUSHI(value1 OP value2); \
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| 181 | }
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| 182 |
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| 183 | #define BINOPF(OP) { \
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| 184 | jfloat value2 = POPF(); \
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| 185 | jfloat value1 = POPF(); \
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| 186 | PUSHF(value1 OP value2); \
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| 187 | }
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| 188 |
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| 189 | #define BINOPL(OP) { \
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| 190 | jlong value2 = POPL(); \
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| 191 | jlong value1 = POPL(); \
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| 192 | PUSHL(value1 OP value2); \
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| 193 | }
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| 194 |
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| 195 | #define BINOPD(OP) { \
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| 196 | jdouble value2 = POPD(); \
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| 197 | jdouble value1 = POPD(); \
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| 198 | PUSHD(value1 OP value2); \
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| 199 | }
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| 200 |
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| 201 | static inline jint get1s(unsigned char* loc) {
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| 202 | return *(signed char*)loc;
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| 203 | }
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| 204 |
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| 205 | static inline jint get1u(unsigned char* loc) {
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| 206 | return *loc;
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| 207 | }
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| 208 |
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| 209 | static inline jint get2s(unsigned char* loc) {
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| 210 | return (((jint)*(signed char*)loc) << 8) | ((jint)*(loc+1));
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| 211 | }
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| 212 |
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| 213 | static inline jint get2u(unsigned char* loc) {
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| 214 | return (((jint)(*loc)) << 8) | ((jint)*(loc+1));
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| 215 | }
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| 216 |
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| 217 | static jint get4(unsigned char* loc) {
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| 218 | return (((jint)(loc[0])) << 24)
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| 219 | | (((jint)(loc[1])) << 16)
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| 220 | | (((jint)(loc[2])) << 8)
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| 221 | | (((jint)(loc[3])) << 0);
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| 222 | }
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| 223 |
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| 224 |
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| 225 | #ifdef HANDLE_SEGV
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| 226 | #define NULLCHECK(X)
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| 227 | #define NULLARRAYCHECK(X)
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| 228 | #else
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| 229 | #define NULLCHECK(X) \
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| 230 | do { if ((X)==NULL) throw_null_pointer_exception (); } while (0)
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| 231 | #define NULLARRAYCHECK(X) \
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| 232 | do { if ((X)==NULL) { throw_null_pointer_exception (); } } while (0)
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| 233 | #endif
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| 234 |
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| 235 | #define ARRAYBOUNDSCHECK(array, index) \
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| 236 | do \
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| 237 | { \
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| 238 | if (((unsigned) index) >= (unsigned) (array->length)) \
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| 239 | _Jv_ThrowBadArrayIndex (index); \
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| 240 | } \
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| 241 | while (0)
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| 242 |
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| 243 | void _Jv_InterpMethod::run_normal (ffi_cif *,
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| 244 | void* ret,
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| 245 | ffi_raw * args,
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| 246 | void* __this)
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| 247 | {
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| 248 | _Jv_InterpMethod *_this = (_Jv_InterpMethod *) __this;
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| 249 | _this->run (ret, args);
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| 250 | }
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| 251 |
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| 252 | void _Jv_InterpMethod::run_synch_object (ffi_cif *,
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| 253 | void* ret,
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| 254 | ffi_raw * args,
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| 255 | void* __this)
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| 256 | {
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| 257 | _Jv_InterpMethod *_this = (_Jv_InterpMethod *) __this;
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| 258 |
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| 259 | jobject rcv = (jobject) args[0].ptr;
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| 260 | JvSynchronize mutex (rcv);
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| 261 |
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| 262 | _this->run (ret, args);
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| 263 | }
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| 264 |
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| 265 | void _Jv_InterpMethod::run_synch_class (ffi_cif *,
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| 266 | void* ret,
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| 267 | ffi_raw * args,
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| 268 | void* __this)
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| 269 | {
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| 270 | _Jv_InterpMethod *_this = (_Jv_InterpMethod *) __this;
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| 271 |
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| 272 | jclass sync = _this->defining_class;
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| 273 | JvSynchronize mutex (sync);
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| 274 |
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| 275 | _this->run (ret, args);
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| 276 | }
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| 277 |
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| 278 | #ifdef DIRECT_THREADED
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| 279 | // "Compile" a method by turning it from bytecode to direct-threaded
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| 280 | // code.
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| 281 | void
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| 282 | _Jv_InterpMethod::compile (const void * const *insn_targets)
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| 283 | {
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| 284 | insn_slot *insns = NULL;
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| 285 | int next = 0;
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| 286 | unsigned char *codestart = bytecode ();
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| 287 | unsigned char *end = codestart + code_length;
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| 288 | _Jv_word *pool_data = defining_class->constants.data;
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| 289 |
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| 290 | #define SET_ONE(Field, Value) \
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| 291 | do \
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| 292 | { \
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| 293 | if (first_pass) \
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| 294 | ++next; \
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| 295 | else \
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| 296 | insns[next++].Field = Value; \
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| 297 | } \
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| 298 | while (0)
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| 299 |
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| 300 | #define SET_INSN(Value) SET_ONE (insn, (void *) Value)
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| 301 | #define SET_INT(Value) SET_ONE (int_val, Value)
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| 302 | #define SET_DATUM(Value) SET_ONE (datum, Value)
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| 303 |
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| 304 | // Map from bytecode PC to slot in INSNS.
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| 305 | int *pc_mapping = (int *) __builtin_alloca (sizeof (int) * code_length);
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| 306 | for (int i = 0; i < code_length; ++i)
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| 307 | pc_mapping[i] = -1;
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| 308 |
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| 309 | for (int i = 0; i < 2; ++i)
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| 310 | {
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| 311 | jboolean first_pass = i == 0;
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| 312 |
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| 313 | if (! first_pass)
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| 314 | {
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| 315 | insns = (insn_slot *) _Jv_AllocBytes (sizeof (insn_slot) * next);
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| 316 | next = 0;
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| 317 | }
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| 318 |
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| 319 | unsigned char *pc = codestart;
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| 320 | while (pc < end)
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| 321 | {
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| 322 | int base_pc_val = pc - codestart;
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| 323 | if (first_pass)
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| 324 | pc_mapping[base_pc_val] = next;
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| 325 |
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| 326 | java_opcode opcode = (java_opcode) *pc++;
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| 327 | // Just elide NOPs.
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| 328 | if (opcode == op_nop)
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| 329 | continue;
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| 330 | SET_INSN (insn_targets[opcode]);
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| 331 |
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| 332 | switch (opcode)
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| 333 | {
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| 334 | case op_nop:
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| 335 | case op_aconst_null:
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| 336 | case op_iconst_m1:
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| 337 | case op_iconst_0:
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| 338 | case op_iconst_1:
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| 339 | case op_iconst_2:
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| 340 | case op_iconst_3:
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| 341 | case op_iconst_4:
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| 342 | case op_iconst_5:
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| 343 | case op_lconst_0:
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| 344 | case op_lconst_1:
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| 345 | case op_fconst_0:
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| 346 | case op_fconst_1:
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| 347 | case op_fconst_2:
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| 348 | case op_dconst_0:
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| 349 | case op_dconst_1:
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| 350 | case op_iload_0:
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| 351 | case op_iload_1:
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| 352 | case op_iload_2:
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| 353 | case op_iload_3:
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| 354 | case op_lload_0:
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| 355 | case op_lload_1:
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| 356 | case op_lload_2:
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| 357 | case op_lload_3:
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| 358 | case op_fload_0:
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| 359 | case op_fload_1:
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| 360 | case op_fload_2:
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| 361 | case op_fload_3:
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| 362 | case op_dload_0:
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| 363 | case op_dload_1:
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| 364 | case op_dload_2:
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| 365 | case op_dload_3:
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| 366 | case op_aload_0:
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| 367 | case op_aload_1:
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| 368 | case op_aload_2:
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| 369 | case op_aload_3:
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| 370 | case op_iaload:
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| 371 | case op_laload:
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| 372 | case op_faload:
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| 373 | case op_daload:
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| 374 | case op_aaload:
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| 375 | case op_baload:
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| 376 | case op_caload:
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| 377 | case op_saload:
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| 378 | case op_istore_0:
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| 379 | case op_istore_1:
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| 380 | case op_istore_2:
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| 381 | case op_istore_3:
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| 382 | case op_lstore_0:
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| 383 | case op_lstore_1:
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| 384 | case op_lstore_2:
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| 385 | case op_lstore_3:
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| 386 | case op_fstore_0:
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| 387 | case op_fstore_1:
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| 388 | case op_fstore_2:
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| 389 | case op_fstore_3:
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| 390 | case op_dstore_0:
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| 391 | case op_dstore_1:
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| 392 | case op_dstore_2:
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| 393 | case op_dstore_3:
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| 394 | case op_astore_0:
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| 395 | case op_astore_1:
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| 396 | case op_astore_2:
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| 397 | case op_astore_3:
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| 398 | case op_iastore:
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| 399 | case op_lastore:
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| 400 | case op_fastore:
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| 401 | case op_dastore:
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| 402 | case op_aastore:
|
|---|
| 403 | case op_bastore:
|
|---|
| 404 | case op_castore:
|
|---|
| 405 | case op_sastore:
|
|---|
| 406 | case op_pop:
|
|---|
| 407 | case op_pop2:
|
|---|
| 408 | case op_dup:
|
|---|
| 409 | case op_dup_x1:
|
|---|
| 410 | case op_dup_x2:
|
|---|
| 411 | case op_dup2:
|
|---|
| 412 | case op_dup2_x1:
|
|---|
| 413 | case op_dup2_x2:
|
|---|
| 414 | case op_swap:
|
|---|
| 415 | case op_iadd:
|
|---|
| 416 | case op_isub:
|
|---|
| 417 | case op_imul:
|
|---|
| 418 | case op_idiv:
|
|---|
| 419 | case op_irem:
|
|---|
| 420 | case op_ishl:
|
|---|
| 421 | case op_ishr:
|
|---|
| 422 | case op_iushr:
|
|---|
| 423 | case op_iand:
|
|---|
| 424 | case op_ior:
|
|---|
| 425 | case op_ixor:
|
|---|
| 426 | case op_ladd:
|
|---|
| 427 | case op_lsub:
|
|---|
| 428 | case op_lmul:
|
|---|
| 429 | case op_ldiv:
|
|---|
| 430 | case op_lrem:
|
|---|
| 431 | case op_lshl:
|
|---|
| 432 | case op_lshr:
|
|---|
| 433 | case op_lushr:
|
|---|
| 434 | case op_land:
|
|---|
| 435 | case op_lor:
|
|---|
| 436 | case op_lxor:
|
|---|
| 437 | case op_fadd:
|
|---|
| 438 | case op_fsub:
|
|---|
| 439 | case op_fmul:
|
|---|
| 440 | case op_fdiv:
|
|---|
| 441 | case op_frem:
|
|---|
| 442 | case op_dadd:
|
|---|
| 443 | case op_dsub:
|
|---|
| 444 | case op_dmul:
|
|---|
| 445 | case op_ddiv:
|
|---|
| 446 | case op_drem:
|
|---|
| 447 | case op_ineg:
|
|---|
| 448 | case op_i2b:
|
|---|
| 449 | case op_i2c:
|
|---|
| 450 | case op_i2s:
|
|---|
| 451 | case op_lneg:
|
|---|
| 452 | case op_fneg:
|
|---|
| 453 | case op_dneg:
|
|---|
| 454 | case op_i2l:
|
|---|
| 455 | case op_i2f:
|
|---|
| 456 | case op_i2d:
|
|---|
| 457 | case op_l2i:
|
|---|
| 458 | case op_l2f:
|
|---|
| 459 | case op_l2d:
|
|---|
| 460 | case op_f2i:
|
|---|
| 461 | case op_f2l:
|
|---|
| 462 | case op_f2d:
|
|---|
| 463 | case op_d2i:
|
|---|
| 464 | case op_d2l:
|
|---|
| 465 | case op_d2f:
|
|---|
| 466 | case op_lcmp:
|
|---|
| 467 | case op_fcmpl:
|
|---|
| 468 | case op_fcmpg:
|
|---|
| 469 | case op_dcmpl:
|
|---|
| 470 | case op_dcmpg:
|
|---|
| 471 | case op_monitorenter:
|
|---|
| 472 | case op_monitorexit:
|
|---|
| 473 | case op_ireturn:
|
|---|
| 474 | case op_lreturn:
|
|---|
| 475 | case op_freturn:
|
|---|
| 476 | case op_dreturn:
|
|---|
| 477 | case op_areturn:
|
|---|
| 478 | case op_return:
|
|---|
| 479 | case op_athrow:
|
|---|
| 480 | case op_arraylength:
|
|---|
| 481 | // No argument, nothing else to do.
|
|---|
| 482 | break;
|
|---|
| 483 |
|
|---|
| 484 | case op_bipush:
|
|---|
| 485 | SET_INT (get1s (pc));
|
|---|
| 486 | ++pc;
|
|---|
| 487 | break;
|
|---|
| 488 |
|
|---|
| 489 | case op_ldc:
|
|---|
| 490 | {
|
|---|
| 491 | int index = get1u (pc);
|
|---|
| 492 | ++pc;
|
|---|
| 493 | SET_DATUM (pool_data[index].o);
|
|---|
| 494 | }
|
|---|
| 495 | break;
|
|---|
| 496 |
|
|---|
| 497 | case op_ret:
|
|---|
| 498 | case op_iload:
|
|---|
| 499 | case op_lload:
|
|---|
| 500 | case op_fload:
|
|---|
| 501 | case op_dload:
|
|---|
| 502 | case op_aload:
|
|---|
| 503 | case op_istore:
|
|---|
| 504 | case op_lstore:
|
|---|
| 505 | case op_fstore:
|
|---|
| 506 | case op_dstore:
|
|---|
| 507 | case op_astore:
|
|---|
| 508 | case op_newarray:
|
|---|
| 509 | SET_INT (get1u (pc));
|
|---|
| 510 | ++pc;
|
|---|
| 511 | break;
|
|---|
| 512 |
|
|---|
| 513 | case op_iinc:
|
|---|
| 514 | SET_INT (get1u (pc));
|
|---|
| 515 | SET_INT (get1s (pc + 1));
|
|---|
| 516 | pc += 2;
|
|---|
| 517 | break;
|
|---|
| 518 |
|
|---|
| 519 | case op_ldc_w:
|
|---|
| 520 | {
|
|---|
| 521 | int index = get2u (pc);
|
|---|
| 522 | pc += 2;
|
|---|
| 523 | SET_DATUM (pool_data[index].o);
|
|---|
| 524 | }
|
|---|
| 525 | break;
|
|---|
| 526 |
|
|---|
| 527 | case op_ldc2_w:
|
|---|
| 528 | {
|
|---|
| 529 | int index = get2u (pc);
|
|---|
| 530 | pc += 2;
|
|---|
| 531 | SET_DATUM (&pool_data[index]);
|
|---|
| 532 | }
|
|---|
| 533 | break;
|
|---|
| 534 |
|
|---|
| 535 | case op_sipush:
|
|---|
| 536 | SET_INT (get2s (pc));
|
|---|
| 537 | pc += 2;
|
|---|
| 538 | break;
|
|---|
| 539 |
|
|---|
| 540 | case op_new:
|
|---|
| 541 | case op_getstatic:
|
|---|
| 542 | case op_getfield:
|
|---|
| 543 | case op_putfield:
|
|---|
| 544 | case op_putstatic:
|
|---|
| 545 | case op_anewarray:
|
|---|
| 546 | case op_instanceof:
|
|---|
| 547 | case op_checkcast:
|
|---|
| 548 | case op_invokespecial:
|
|---|
| 549 | case op_invokestatic:
|
|---|
| 550 | case op_invokevirtual:
|
|---|
| 551 | SET_INT (get2u (pc));
|
|---|
| 552 | pc += 2;
|
|---|
| 553 | break;
|
|---|
| 554 |
|
|---|
| 555 | case op_multianewarray:
|
|---|
| 556 | SET_INT (get2u (pc));
|
|---|
| 557 | SET_INT (get1u (pc + 2));
|
|---|
| 558 | pc += 3;
|
|---|
| 559 | break;
|
|---|
| 560 |
|
|---|
| 561 | case op_jsr:
|
|---|
| 562 | case op_ifeq:
|
|---|
| 563 | case op_ifne:
|
|---|
| 564 | case op_iflt:
|
|---|
| 565 | case op_ifge:
|
|---|
| 566 | case op_ifgt:
|
|---|
| 567 | case op_ifle:
|
|---|
| 568 | case op_if_icmpeq:
|
|---|
| 569 | case op_if_icmpne:
|
|---|
| 570 | case op_if_icmplt:
|
|---|
| 571 | case op_if_icmpge:
|
|---|
| 572 | case op_if_icmpgt:
|
|---|
| 573 | case op_if_icmple:
|
|---|
| 574 | case op_if_acmpeq:
|
|---|
| 575 | case op_if_acmpne:
|
|---|
| 576 | case op_ifnull:
|
|---|
| 577 | case op_ifnonnull:
|
|---|
| 578 | case op_goto:
|
|---|
| 579 | {
|
|---|
| 580 | int offset = get2s (pc);
|
|---|
| 581 | pc += 2;
|
|---|
| 582 |
|
|---|
| 583 | int new_pc = base_pc_val + offset;
|
|---|
| 584 |
|
|---|
| 585 | bool orig_was_goto = opcode == op_goto;
|
|---|
| 586 |
|
|---|
| 587 | // Thread jumps. We limit the loop count; this lets
|
|---|
| 588 | // us avoid infinite loops if the bytecode contains
|
|---|
| 589 | // such. `10' is arbitrary.
|
|---|
| 590 | int count = 10;
|
|---|
| 591 | while (codestart[new_pc] == op_goto && count-- > 0)
|
|---|
| 592 | new_pc += get2s (&codestart[new_pc + 1]);
|
|---|
| 593 |
|
|---|
| 594 | // If the jump takes us to a `return' instruction and
|
|---|
| 595 | // the original branch was an unconditional goto, then
|
|---|
| 596 | // we hoist the return.
|
|---|
| 597 | opcode = (java_opcode) codestart[new_pc];
|
|---|
| 598 | if (orig_was_goto
|
|---|
| 599 | && (opcode == op_ireturn || opcode == op_lreturn
|
|---|
| 600 | || opcode == op_freturn || opcode == op_dreturn
|
|---|
| 601 | || opcode == op_areturn || opcode == op_return))
|
|---|
| 602 | {
|
|---|
| 603 | --next;
|
|---|
| 604 | SET_INSN (insn_targets[opcode]);
|
|---|
| 605 | }
|
|---|
| 606 | else
|
|---|
| 607 | SET_DATUM (&insns[pc_mapping[new_pc]]);
|
|---|
| 608 | }
|
|---|
| 609 | break;
|
|---|
| 610 |
|
|---|
| 611 | case op_tableswitch:
|
|---|
| 612 | {
|
|---|
| 613 | while ((pc - codestart) % 4 != 0)
|
|---|
| 614 | ++pc;
|
|---|
| 615 |
|
|---|
| 616 | jint def = get4 (pc);
|
|---|
| 617 | SET_DATUM (&insns[pc_mapping[base_pc_val + def]]);
|
|---|
| 618 | pc += 4;
|
|---|
| 619 |
|
|---|
| 620 | int low = get4 (pc);
|
|---|
| 621 | SET_INT (low);
|
|---|
| 622 | pc += 4;
|
|---|
| 623 | int high = get4 (pc);
|
|---|
| 624 | SET_INT (high);
|
|---|
| 625 | pc += 4;
|
|---|
| 626 |
|
|---|
| 627 | for (int i = low; i <= high; ++i)
|
|---|
| 628 | {
|
|---|
| 629 | SET_DATUM (&insns[pc_mapping[base_pc_val + get4 (pc)]]);
|
|---|
| 630 | pc += 4;
|
|---|
| 631 | }
|
|---|
| 632 | }
|
|---|
| 633 | break;
|
|---|
| 634 |
|
|---|
| 635 | case op_lookupswitch:
|
|---|
| 636 | {
|
|---|
| 637 | while ((pc - codestart) % 4 != 0)
|
|---|
| 638 | ++pc;
|
|---|
| 639 |
|
|---|
| 640 | jint def = get4 (pc);
|
|---|
| 641 | SET_DATUM (&insns[pc_mapping[base_pc_val + def]]);
|
|---|
| 642 | pc += 4;
|
|---|
| 643 |
|
|---|
| 644 | jint npairs = get4 (pc);
|
|---|
| 645 | pc += 4;
|
|---|
| 646 | SET_INT (npairs);
|
|---|
| 647 |
|
|---|
| 648 | while (npairs-- > 0)
|
|---|
| 649 | {
|
|---|
| 650 | jint match = get4 (pc);
|
|---|
| 651 | jint offset = get4 (pc + 4);
|
|---|
| 652 | SET_INT (match);
|
|---|
| 653 | SET_DATUM (&insns[pc_mapping[base_pc_val + offset]]);
|
|---|
| 654 | pc += 8;
|
|---|
| 655 | }
|
|---|
| 656 | }
|
|---|
| 657 | break;
|
|---|
| 658 |
|
|---|
| 659 | case op_invokeinterface:
|
|---|
| 660 | {
|
|---|
| 661 | jint index = get2u (pc);
|
|---|
| 662 | pc += 2;
|
|---|
| 663 | // We ignore the next two bytes.
|
|---|
| 664 | pc += 2;
|
|---|
| 665 | SET_INT (index);
|
|---|
| 666 | }
|
|---|
| 667 | break;
|
|---|
| 668 |
|
|---|
| 669 | case op_wide:
|
|---|
| 670 | {
|
|---|
| 671 | opcode = (java_opcode) get1u (pc);
|
|---|
| 672 | pc += 1;
|
|---|
| 673 | jint val = get2u (pc);
|
|---|
| 674 | pc += 2;
|
|---|
| 675 |
|
|---|
| 676 | // We implement narrow and wide instructions using the
|
|---|
| 677 | // same code in the interpreter. So we rewrite the
|
|---|
| 678 | // instruction slot here.
|
|---|
| 679 | if (! first_pass)
|
|---|
| 680 | insns[next - 1].insn = (void *) insn_targets[opcode];
|
|---|
| 681 | SET_INT (val);
|
|---|
| 682 |
|
|---|
| 683 | if (opcode == op_iinc)
|
|---|
| 684 | {
|
|---|
| 685 | SET_INT (get2s (pc));
|
|---|
| 686 | pc += 2;
|
|---|
| 687 | }
|
|---|
| 688 | }
|
|---|
| 689 | break;
|
|---|
| 690 |
|
|---|
| 691 | case op_jsr_w:
|
|---|
| 692 | case op_goto_w:
|
|---|
| 693 | {
|
|---|
| 694 | jint offset = get4 (pc);
|
|---|
| 695 | pc += 4;
|
|---|
| 696 | SET_DATUM (&insns[pc_mapping[base_pc_val + offset]]);
|
|---|
| 697 | }
|
|---|
| 698 | break;
|
|---|
| 699 |
|
|---|
| 700 | // Some "can't happen" cases that we include for
|
|---|
| 701 | // error-checking purposes.
|
|---|
| 702 | case op_putfield_1:
|
|---|
| 703 | case op_putfield_2:
|
|---|
| 704 | case op_putfield_4:
|
|---|
| 705 | case op_putfield_8:
|
|---|
| 706 | case op_putfield_a:
|
|---|
| 707 | case op_putstatic_1:
|
|---|
| 708 | case op_putstatic_2:
|
|---|
| 709 | case op_putstatic_4:
|
|---|
| 710 | case op_putstatic_8:
|
|---|
| 711 | case op_putstatic_a:
|
|---|
| 712 | case op_getfield_1:
|
|---|
| 713 | case op_getfield_2s:
|
|---|
| 714 | case op_getfield_2u:
|
|---|
| 715 | case op_getfield_4:
|
|---|
| 716 | case op_getfield_8:
|
|---|
| 717 | case op_getfield_a:
|
|---|
| 718 | case op_getstatic_1:
|
|---|
| 719 | case op_getstatic_2s:
|
|---|
| 720 | case op_getstatic_2u:
|
|---|
| 721 | case op_getstatic_4:
|
|---|
| 722 | case op_getstatic_8:
|
|---|
| 723 | case op_getstatic_a:
|
|---|
| 724 | default:
|
|---|
| 725 | // Fail somehow.
|
|---|
| 726 | break;
|
|---|
| 727 | }
|
|---|
| 728 | }
|
|---|
| 729 | }
|
|---|
| 730 |
|
|---|
| 731 | // Now update exceptions.
|
|---|
| 732 | _Jv_InterpException *exc = exceptions ();
|
|---|
| 733 | for (int i = 0; i < exc_count; ++i)
|
|---|
| 734 | {
|
|---|
| 735 | exc[i].start_pc.p = &insns[pc_mapping[exc[i].start_pc.i]];
|
|---|
| 736 | exc[i].end_pc.p = &insns[pc_mapping[exc[i].end_pc.i]];
|
|---|
| 737 | exc[i].handler_pc.p = &insns[pc_mapping[exc[i].handler_pc.i]];
|
|---|
| 738 | jclass handler = (_Jv_ResolvePoolEntry (defining_class,
|
|---|
| 739 | exc[i].handler_type.i)).clazz;
|
|---|
| 740 | exc[i].handler_type.p = handler;
|
|---|
| 741 | }
|
|---|
| 742 |
|
|---|
| 743 | prepared = insns;
|
|---|
| 744 | }
|
|---|
| 745 | #endif /* DIRECT_THREADED */
|
|---|
| 746 |
|
|---|
| 747 | // This function exists so that the stack-tracing code can find the
|
|---|
| 748 | // boundaries of the interpreter.
|
|---|
| 749 | void
|
|---|
| 750 | _Jv_StartOfInterpreter (void)
|
|---|
| 751 | {
|
|---|
| 752 | }
|
|---|
| 753 |
|
|---|
| 754 | void
|
|---|
| 755 | _Jv_InterpMethod::run (void *retp, ffi_raw *args)
|
|---|
| 756 | {
|
|---|
| 757 | using namespace java::lang::reflect;
|
|---|
| 758 |
|
|---|
| 759 | // FRAME_DESC registers this particular invocation as the top-most
|
|---|
| 760 | // interpreter frame. This lets the stack tracing code (for
|
|---|
| 761 | // Throwable) print information about the method being interpreted
|
|---|
| 762 | // rather than about the interpreter itself. FRAME_DESC has a
|
|---|
| 763 | // destructor so it cleans up automatically when the interpreter
|
|---|
| 764 | // returns.
|
|---|
| 765 | java::lang::Thread *thread = java::lang::Thread::currentThread();
|
|---|
| 766 | _Jv_MethodChain frame_desc (this,
|
|---|
| 767 | (_Jv_MethodChain **) &thread->interp_frame);
|
|---|
| 768 |
|
|---|
| 769 | _Jv_word stack[max_stack];
|
|---|
| 770 | _Jv_word *sp = stack;
|
|---|
| 771 |
|
|---|
| 772 | _Jv_word locals[max_locals];
|
|---|
| 773 |
|
|---|
| 774 | /* Go straight at it! the ffi raw format matches the internal
|
|---|
| 775 | stack representation exactly. At least, that's the idea.
|
|---|
| 776 | */
|
|---|
| 777 | memcpy ((void*) locals, (void*) args, args_raw_size);
|
|---|
| 778 |
|
|---|
| 779 | _Jv_word *pool_data = defining_class->constants.data;
|
|---|
| 780 |
|
|---|
| 781 | /* These three are temporaries for common code used by several
|
|---|
| 782 | instructions. */
|
|---|
| 783 | void (*fun)();
|
|---|
| 784 | _Jv_ResolvedMethod* rmeth;
|
|---|
| 785 | int tmpval;
|
|---|
| 786 |
|
|---|
| 787 | #define INSN_LABEL(op) &&insn_##op
|
|---|
| 788 |
|
|---|
| 789 | static const void *const insn_target[] =
|
|---|
| 790 | {
|
|---|
| 791 | INSN_LABEL(nop),
|
|---|
| 792 | INSN_LABEL(aconst_null),
|
|---|
| 793 | INSN_LABEL(iconst_m1),
|
|---|
| 794 | INSN_LABEL(iconst_0),
|
|---|
| 795 | INSN_LABEL(iconst_1),
|
|---|
| 796 | INSN_LABEL(iconst_2),
|
|---|
| 797 | INSN_LABEL(iconst_3),
|
|---|
| 798 | INSN_LABEL(iconst_4),
|
|---|
| 799 | INSN_LABEL(iconst_5),
|
|---|
| 800 | INSN_LABEL(lconst_0),
|
|---|
| 801 | INSN_LABEL(lconst_1),
|
|---|
| 802 | INSN_LABEL(fconst_0),
|
|---|
| 803 | INSN_LABEL(fconst_1),
|
|---|
| 804 | INSN_LABEL(fconst_2),
|
|---|
| 805 | INSN_LABEL(dconst_0),
|
|---|
| 806 | INSN_LABEL(dconst_1),
|
|---|
| 807 | INSN_LABEL(bipush),
|
|---|
| 808 | INSN_LABEL(sipush),
|
|---|
| 809 | INSN_LABEL(ldc),
|
|---|
| 810 | INSN_LABEL(ldc_w),
|
|---|
| 811 | INSN_LABEL(ldc2_w),
|
|---|
| 812 | INSN_LABEL(iload),
|
|---|
| 813 | INSN_LABEL(lload),
|
|---|
| 814 | INSN_LABEL(fload),
|
|---|
| 815 | INSN_LABEL(dload),
|
|---|
| 816 | INSN_LABEL(aload),
|
|---|
| 817 | INSN_LABEL(iload_0),
|
|---|
| 818 | INSN_LABEL(iload_1),
|
|---|
| 819 | INSN_LABEL(iload_2),
|
|---|
| 820 | INSN_LABEL(iload_3),
|
|---|
| 821 | INSN_LABEL(lload_0),
|
|---|
| 822 | INSN_LABEL(lload_1),
|
|---|
| 823 | INSN_LABEL(lload_2),
|
|---|
| 824 | INSN_LABEL(lload_3),
|
|---|
| 825 | INSN_LABEL(fload_0),
|
|---|
| 826 | INSN_LABEL(fload_1),
|
|---|
| 827 | INSN_LABEL(fload_2),
|
|---|
| 828 | INSN_LABEL(fload_3),
|
|---|
| 829 | INSN_LABEL(dload_0),
|
|---|
| 830 | INSN_LABEL(dload_1),
|
|---|
| 831 | INSN_LABEL(dload_2),
|
|---|
| 832 | INSN_LABEL(dload_3),
|
|---|
| 833 | INSN_LABEL(aload_0),
|
|---|
| 834 | INSN_LABEL(aload_1),
|
|---|
| 835 | INSN_LABEL(aload_2),
|
|---|
| 836 | INSN_LABEL(aload_3),
|
|---|
| 837 | INSN_LABEL(iaload),
|
|---|
| 838 | INSN_LABEL(laload),
|
|---|
| 839 | INSN_LABEL(faload),
|
|---|
| 840 | INSN_LABEL(daload),
|
|---|
| 841 | INSN_LABEL(aaload),
|
|---|
| 842 | INSN_LABEL(baload),
|
|---|
| 843 | INSN_LABEL(caload),
|
|---|
| 844 | INSN_LABEL(saload),
|
|---|
| 845 | INSN_LABEL(istore),
|
|---|
| 846 | INSN_LABEL(lstore),
|
|---|
| 847 | INSN_LABEL(fstore),
|
|---|
| 848 | INSN_LABEL(dstore),
|
|---|
| 849 | INSN_LABEL(astore),
|
|---|
| 850 | INSN_LABEL(istore_0),
|
|---|
| 851 | INSN_LABEL(istore_1),
|
|---|
| 852 | INSN_LABEL(istore_2),
|
|---|
| 853 | INSN_LABEL(istore_3),
|
|---|
| 854 | INSN_LABEL(lstore_0),
|
|---|
| 855 | INSN_LABEL(lstore_1),
|
|---|
| 856 | INSN_LABEL(lstore_2),
|
|---|
| 857 | INSN_LABEL(lstore_3),
|
|---|
| 858 | INSN_LABEL(fstore_0),
|
|---|
| 859 | INSN_LABEL(fstore_1),
|
|---|
| 860 | INSN_LABEL(fstore_2),
|
|---|
| 861 | INSN_LABEL(fstore_3),
|
|---|
| 862 | INSN_LABEL(dstore_0),
|
|---|
| 863 | INSN_LABEL(dstore_1),
|
|---|
| 864 | INSN_LABEL(dstore_2),
|
|---|
| 865 | INSN_LABEL(dstore_3),
|
|---|
| 866 | INSN_LABEL(astore_0),
|
|---|
| 867 | INSN_LABEL(astore_1),
|
|---|
| 868 | INSN_LABEL(astore_2),
|
|---|
| 869 | INSN_LABEL(astore_3),
|
|---|
| 870 | INSN_LABEL(iastore),
|
|---|
| 871 | INSN_LABEL(lastore),
|
|---|
| 872 | INSN_LABEL(fastore),
|
|---|
| 873 | INSN_LABEL(dastore),
|
|---|
| 874 | INSN_LABEL(aastore),
|
|---|
| 875 | INSN_LABEL(bastore),
|
|---|
| 876 | INSN_LABEL(castore),
|
|---|
| 877 | INSN_LABEL(sastore),
|
|---|
| 878 | INSN_LABEL(pop),
|
|---|
| 879 | INSN_LABEL(pop2),
|
|---|
| 880 | INSN_LABEL(dup),
|
|---|
| 881 | INSN_LABEL(dup_x1),
|
|---|
| 882 | INSN_LABEL(dup_x2),
|
|---|
| 883 | INSN_LABEL(dup2),
|
|---|
| 884 | INSN_LABEL(dup2_x1),
|
|---|
| 885 | INSN_LABEL(dup2_x2),
|
|---|
| 886 | INSN_LABEL(swap),
|
|---|
| 887 | INSN_LABEL(iadd),
|
|---|
| 888 | INSN_LABEL(ladd),
|
|---|
| 889 | INSN_LABEL(fadd),
|
|---|
| 890 | INSN_LABEL(dadd),
|
|---|
| 891 | INSN_LABEL(isub),
|
|---|
| 892 | INSN_LABEL(lsub),
|
|---|
| 893 | INSN_LABEL(fsub),
|
|---|
| 894 | INSN_LABEL(dsub),
|
|---|
| 895 | INSN_LABEL(imul),
|
|---|
| 896 | INSN_LABEL(lmul),
|
|---|
| 897 | INSN_LABEL(fmul),
|
|---|
| 898 | INSN_LABEL(dmul),
|
|---|
| 899 | INSN_LABEL(idiv),
|
|---|
| 900 | INSN_LABEL(ldiv),
|
|---|
| 901 | INSN_LABEL(fdiv),
|
|---|
| 902 | INSN_LABEL(ddiv),
|
|---|
| 903 | INSN_LABEL(irem),
|
|---|
| 904 | INSN_LABEL(lrem),
|
|---|
| 905 | INSN_LABEL(frem),
|
|---|
| 906 | INSN_LABEL(drem),
|
|---|
| 907 | INSN_LABEL(ineg),
|
|---|
| 908 | INSN_LABEL(lneg),
|
|---|
| 909 | INSN_LABEL(fneg),
|
|---|
| 910 | INSN_LABEL(dneg),
|
|---|
| 911 | INSN_LABEL(ishl),
|
|---|
| 912 | INSN_LABEL(lshl),
|
|---|
| 913 | INSN_LABEL(ishr),
|
|---|
| 914 | INSN_LABEL(lshr),
|
|---|
| 915 | INSN_LABEL(iushr),
|
|---|
| 916 | INSN_LABEL(lushr),
|
|---|
| 917 | INSN_LABEL(iand),
|
|---|
| 918 | INSN_LABEL(land),
|
|---|
| 919 | INSN_LABEL(ior),
|
|---|
| 920 | INSN_LABEL(lor),
|
|---|
| 921 | INSN_LABEL(ixor),
|
|---|
| 922 | INSN_LABEL(lxor),
|
|---|
| 923 | INSN_LABEL(iinc),
|
|---|
| 924 | INSN_LABEL(i2l),
|
|---|
| 925 | INSN_LABEL(i2f),
|
|---|
| 926 | INSN_LABEL(i2d),
|
|---|
| 927 | INSN_LABEL(l2i),
|
|---|
| 928 | INSN_LABEL(l2f),
|
|---|
| 929 | INSN_LABEL(l2d),
|
|---|
| 930 | INSN_LABEL(f2i),
|
|---|
| 931 | INSN_LABEL(f2l),
|
|---|
| 932 | INSN_LABEL(f2d),
|
|---|
| 933 | INSN_LABEL(d2i),
|
|---|
| 934 | INSN_LABEL(d2l),
|
|---|
| 935 | INSN_LABEL(d2f),
|
|---|
| 936 | INSN_LABEL(i2b),
|
|---|
| 937 | INSN_LABEL(i2c),
|
|---|
| 938 | INSN_LABEL(i2s),
|
|---|
| 939 | INSN_LABEL(lcmp),
|
|---|
| 940 | INSN_LABEL(fcmpl),
|
|---|
| 941 | INSN_LABEL(fcmpg),
|
|---|
| 942 | INSN_LABEL(dcmpl),
|
|---|
| 943 | INSN_LABEL(dcmpg),
|
|---|
| 944 | INSN_LABEL(ifeq),
|
|---|
| 945 | INSN_LABEL(ifne),
|
|---|
| 946 | INSN_LABEL(iflt),
|
|---|
| 947 | INSN_LABEL(ifge),
|
|---|
| 948 | INSN_LABEL(ifgt),
|
|---|
| 949 | INSN_LABEL(ifle),
|
|---|
| 950 | INSN_LABEL(if_icmpeq),
|
|---|
| 951 | INSN_LABEL(if_icmpne),
|
|---|
| 952 | INSN_LABEL(if_icmplt),
|
|---|
| 953 | INSN_LABEL(if_icmpge),
|
|---|
| 954 | INSN_LABEL(if_icmpgt),
|
|---|
| 955 | INSN_LABEL(if_icmple),
|
|---|
| 956 | INSN_LABEL(if_acmpeq),
|
|---|
| 957 | INSN_LABEL(if_acmpne),
|
|---|
| 958 | INSN_LABEL(goto),
|
|---|
| 959 | INSN_LABEL(jsr),
|
|---|
| 960 | INSN_LABEL(ret),
|
|---|
| 961 | INSN_LABEL(tableswitch),
|
|---|
| 962 | INSN_LABEL(lookupswitch),
|
|---|
| 963 | INSN_LABEL(ireturn),
|
|---|
| 964 | INSN_LABEL(lreturn),
|
|---|
| 965 | INSN_LABEL(freturn),
|
|---|
| 966 | INSN_LABEL(dreturn),
|
|---|
| 967 | INSN_LABEL(areturn),
|
|---|
| 968 | INSN_LABEL(return),
|
|---|
| 969 | INSN_LABEL(getstatic),
|
|---|
| 970 | INSN_LABEL(putstatic),
|
|---|
| 971 | INSN_LABEL(getfield),
|
|---|
| 972 | INSN_LABEL(putfield),
|
|---|
| 973 | INSN_LABEL(invokevirtual),
|
|---|
| 974 | INSN_LABEL(invokespecial),
|
|---|
| 975 | INSN_LABEL(invokestatic),
|
|---|
| 976 | INSN_LABEL(invokeinterface),
|
|---|
| 977 | 0, /* Unused. */
|
|---|
| 978 | INSN_LABEL(new),
|
|---|
| 979 | INSN_LABEL(newarray),
|
|---|
| 980 | INSN_LABEL(anewarray),
|
|---|
| 981 | INSN_LABEL(arraylength),
|
|---|
| 982 | INSN_LABEL(athrow),
|
|---|
| 983 | INSN_LABEL(checkcast),
|
|---|
| 984 | INSN_LABEL(instanceof),
|
|---|
| 985 | INSN_LABEL(monitorenter),
|
|---|
| 986 | INSN_LABEL(monitorexit),
|
|---|
| 987 | #ifdef DIRECT_THREADED
|
|---|
| 988 | 0, // wide
|
|---|
| 989 | #else
|
|---|
| 990 | INSN_LABEL(wide),
|
|---|
| 991 | #endif
|
|---|
| 992 | INSN_LABEL(multianewarray),
|
|---|
| 993 | INSN_LABEL(ifnull),
|
|---|
| 994 | INSN_LABEL(ifnonnull),
|
|---|
| 995 | INSN_LABEL(goto_w),
|
|---|
| 996 | INSN_LABEL(jsr_w),
|
|---|
| 997 | 0
|
|---|
| 998 | };
|
|---|
| 999 |
|
|---|
| 1000 | pc_t pc;
|
|---|
| 1001 |
|
|---|
| 1002 | #ifdef DIRECT_THREADED
|
|---|
| 1003 |
|
|---|
| 1004 | #define NEXT_INSN goto *((pc++)->insn)
|
|---|
| 1005 | #define INTVAL() ((pc++)->int_val)
|
|---|
| 1006 | #define AVAL() ((pc++)->datum)
|
|---|
| 1007 |
|
|---|
| 1008 | #define GET1S() INTVAL ()
|
|---|
| 1009 | #define GET2S() INTVAL ()
|
|---|
| 1010 | #define GET1U() INTVAL ()
|
|---|
| 1011 | #define GET2U() INTVAL ()
|
|---|
| 1012 | #define AVAL1U() AVAL ()
|
|---|
| 1013 | #define AVAL2U() AVAL ()
|
|---|
| 1014 | #define AVAL2UP() AVAL ()
|
|---|
| 1015 | #define SKIP_GOTO ++pc
|
|---|
| 1016 | #define GOTO_VAL() (insn_slot *) pc->datum
|
|---|
| 1017 | #define PCVAL(unionval) unionval.p
|
|---|
| 1018 | #define AMPAMP(label) &&label
|
|---|
| 1019 |
|
|---|
| 1020 | // Compile if we must.
|
|---|
| 1021 | if (prepared == NULL)
|
|---|
| 1022 | compile (insn_target);
|
|---|
| 1023 | pc = (insn_slot *) prepared;
|
|---|
| 1024 |
|
|---|
| 1025 | #else
|
|---|
| 1026 |
|
|---|
| 1027 | #define NEXT_INSN goto *(insn_target[*pc++])
|
|---|
| 1028 |
|
|---|
| 1029 | #define GET1S() get1s (pc++)
|
|---|
| 1030 | #define GET2S() (pc += 2, get2s (pc- 2))
|
|---|
| 1031 | #define GET1U() get1u (pc++)
|
|---|
| 1032 | #define GET2U() (pc += 2, get2u (pc - 2))
|
|---|
| 1033 | #define AVAL1U() ({ int index = get1u (pc++); pool_data[index].o; })
|
|---|
| 1034 | #define AVAL2U() ({ int index = get2u (pc); pc += 2; pool_data[index].o; })
|
|---|
| 1035 | #define AVAL2UP() ({ int index = get2u (pc); pc += 2; &pool_data[index]; })
|
|---|
| 1036 | #define SKIP_GOTO pc += 2
|
|---|
| 1037 | #define GOTO_VAL() pc - 1 + get2s (pc)
|
|---|
| 1038 | #define PCVAL(unionval) unionval.i
|
|---|
| 1039 | #define AMPAMP(label) NULL
|
|---|
| 1040 |
|
|---|
| 1041 | pc = bytecode ();
|
|---|
| 1042 |
|
|---|
| 1043 | #endif /* DIRECT_THREADED */
|
|---|
| 1044 |
|
|---|
| 1045 | #define TAKE_GOTO pc = GOTO_VAL ()
|
|---|
| 1046 |
|
|---|
| 1047 | try
|
|---|
| 1048 | {
|
|---|
| 1049 | // We keep nop around. It is used if we're interpreting the
|
|---|
| 1050 | // bytecodes and not doing direct threading.
|
|---|
| 1051 | insn_nop:
|
|---|
| 1052 | NEXT_INSN;
|
|---|
| 1053 |
|
|---|
| 1054 | /* The first few instructions here are ordered according to their
|
|---|
| 1055 | frequency, in the hope that this will improve code locality a
|
|---|
| 1056 | little. */
|
|---|
| 1057 |
|
|---|
| 1058 | insn_aload_0: // 0x2a
|
|---|
| 1059 | LOADA (0);
|
|---|
| 1060 | NEXT_INSN;
|
|---|
| 1061 |
|
|---|
| 1062 | insn_iload: // 0x15
|
|---|
| 1063 | LOADI (GET1U ());
|
|---|
| 1064 | NEXT_INSN;
|
|---|
| 1065 |
|
|---|
| 1066 | insn_iload_1: // 0x1b
|
|---|
| 1067 | LOADI (1);
|
|---|
| 1068 | NEXT_INSN;
|
|---|
| 1069 |
|
|---|
| 1070 | insn_invokevirtual: // 0xb6
|
|---|
| 1071 | {
|
|---|
| 1072 | int index = GET2U ();
|
|---|
| 1073 |
|
|---|
| 1074 | /* _Jv_ResolvePoolEntry returns immediately if the value already
|
|---|
| 1075 | * is resolved. If we want to clutter up the code here to gain
|
|---|
| 1076 | * a little performance, then we can check the corresponding bit
|
|---|
| 1077 | * JV_CONSTANT_ResolvedFlag in the tag directly. For now, I
|
|---|
| 1078 | * don't think it is worth it. */
|
|---|
| 1079 |
|
|---|
| 1080 | rmeth = (_Jv_ResolvePoolEntry (defining_class, index)).rmethod;
|
|---|
| 1081 |
|
|---|
| 1082 | sp -= rmeth->stack_item_count;
|
|---|
| 1083 | // We don't use NULLCHECK here because we can't rely on that
|
|---|
| 1084 | // working if the method is final. So instead we do an
|
|---|
| 1085 | // explicit test.
|
|---|
| 1086 | if (! sp[0].o)
|
|---|
| 1087 | throw new java::lang::NullPointerException;
|
|---|
| 1088 |
|
|---|
| 1089 | if (rmeth->vtable_index == -1)
|
|---|
| 1090 | {
|
|---|
| 1091 | // final methods do not appear in the vtable,
|
|---|
| 1092 | // if it does not appear in the superclass.
|
|---|
| 1093 | fun = (void (*)()) rmeth->method->ncode;
|
|---|
| 1094 | }
|
|---|
| 1095 | else
|
|---|
| 1096 | {
|
|---|
| 1097 | jobject rcv = sp[0].o;
|
|---|
| 1098 | _Jv_VTable *table = *(_Jv_VTable**) rcv;
|
|---|
| 1099 | fun = (void (*)()) table->get_method (rmeth->vtable_index);
|
|---|
| 1100 | }
|
|---|
| 1101 |
|
|---|
| 1102 | #ifdef DIRECT_THREADED
|
|---|
| 1103 | // Rewrite instruction so that we use a faster pre-resolved
|
|---|
| 1104 | // method.
|
|---|
| 1105 | pc[-2].insn = &&invokevirtual_resolved;
|
|---|
| 1106 | pc[-1].datum = rmeth;
|
|---|
| 1107 | #endif /* DIRECT_THREADED */
|
|---|
| 1108 | }
|
|---|
| 1109 | goto perform_invoke;
|
|---|
| 1110 |
|
|---|
| 1111 | #ifdef DIRECT_THREADED
|
|---|
| 1112 | invokevirtual_resolved:
|
|---|
| 1113 | {
|
|---|
| 1114 | rmeth = (_Jv_ResolvedMethod *) AVAL ();
|
|---|
| 1115 | sp -= rmeth->stack_item_count;
|
|---|
| 1116 | // We don't use NULLCHECK here because we can't rely on that
|
|---|
| 1117 | // working if the method is final. So instead we do an
|
|---|
| 1118 | // explicit test.
|
|---|
| 1119 | if (! sp[0].o)
|
|---|
| 1120 | throw new java::lang::NullPointerException;
|
|---|
| 1121 |
|
|---|
| 1122 | if (rmeth->vtable_index == -1)
|
|---|
| 1123 | {
|
|---|
| 1124 | // final methods do not appear in the vtable,
|
|---|
| 1125 | // if it does not appear in the superclass.
|
|---|
| 1126 | fun = (void (*)()) rmeth->method->ncode;
|
|---|
| 1127 | }
|
|---|
| 1128 | else
|
|---|
| 1129 | {
|
|---|
| 1130 | jobject rcv = sp[0].o;
|
|---|
| 1131 | _Jv_VTable *table = *(_Jv_VTable**) rcv;
|
|---|
| 1132 | fun = (void (*)()) table->get_method (rmeth->vtable_index);
|
|---|
| 1133 | }
|
|---|
| 1134 | }
|
|---|
| 1135 | goto perform_invoke;
|
|---|
| 1136 | #endif /* DIRECT_THREADED */
|
|---|
| 1137 |
|
|---|
| 1138 | perform_invoke:
|
|---|
| 1139 | {
|
|---|
| 1140 | /* here goes the magic again... */
|
|---|
| 1141 | ffi_cif *cif = &rmeth->cif;
|
|---|
| 1142 | ffi_raw *raw = (ffi_raw*) sp;
|
|---|
| 1143 |
|
|---|
| 1144 | jdouble rvalue;
|
|---|
| 1145 |
|
|---|
| 1146 | #if FFI_NATIVE_RAW_API
|
|---|
| 1147 | /* We assume that this is only implemented if it's correct */
|
|---|
| 1148 | /* to use it here. On a 64 bit machine, it never is. */
|
|---|
| 1149 | ffi_raw_call (cif, fun, (void*)&rvalue, raw);
|
|---|
| 1150 | #else
|
|---|
| 1151 | ffi_java_raw_call (cif, fun, (void*)&rvalue, raw);
|
|---|
| 1152 | #endif
|
|---|
| 1153 |
|
|---|
| 1154 | int rtype = cif->rtype->type;
|
|---|
| 1155 |
|
|---|
| 1156 | /* the likelyhood of object, int, or void return is very high,
|
|---|
| 1157 | * so those are checked before the switch */
|
|---|
| 1158 | if (rtype == FFI_TYPE_POINTER)
|
|---|
| 1159 | {
|
|---|
| 1160 | PUSHA (*(jobject*)&rvalue);
|
|---|
| 1161 | }
|
|---|
| 1162 | else if (rtype == FFI_TYPE_SINT32)
|
|---|
| 1163 | {
|
|---|
| 1164 | PUSHI (*(jint*)&rvalue);
|
|---|
| 1165 | }
|
|---|
| 1166 | else if (rtype == FFI_TYPE_VOID)
|
|---|
| 1167 | {
|
|---|
| 1168 | /* skip */
|
|---|
| 1169 | }
|
|---|
| 1170 | else
|
|---|
| 1171 | {
|
|---|
| 1172 | switch (rtype)
|
|---|
| 1173 | {
|
|---|
| 1174 | case FFI_TYPE_SINT8:
|
|---|
| 1175 | {
|
|---|
| 1176 | jbyte value = (*(jint*)&rvalue) & 0xff;
|
|---|
| 1177 | PUSHI (value);
|
|---|
| 1178 | }
|
|---|
| 1179 | break;
|
|---|
| 1180 |
|
|---|
| 1181 | case FFI_TYPE_SINT16:
|
|---|
| 1182 | {
|
|---|
| 1183 | jshort value = (*(jint*)&rvalue) & 0xffff;
|
|---|
| 1184 | PUSHI (value);
|
|---|
| 1185 | }
|
|---|
| 1186 | break;
|
|---|
| 1187 |
|
|---|
| 1188 | case FFI_TYPE_UINT16:
|
|---|
| 1189 | {
|
|---|
| 1190 | jint value = (*(jint*)&rvalue) & 0xffff;
|
|---|
| 1191 | PUSHI (value);
|
|---|
| 1192 | }
|
|---|
| 1193 | break;
|
|---|
| 1194 |
|
|---|
| 1195 | case FFI_TYPE_FLOAT:
|
|---|
| 1196 | PUSHF (*(jfloat*)&rvalue);
|
|---|
| 1197 | break;
|
|---|
| 1198 |
|
|---|
| 1199 | case FFI_TYPE_DOUBLE:
|
|---|
| 1200 | PUSHD (rvalue);
|
|---|
| 1201 | break;
|
|---|
| 1202 |
|
|---|
| 1203 | case FFI_TYPE_SINT64:
|
|---|
| 1204 | PUSHL (*(jlong*)&rvalue);
|
|---|
| 1205 | break;
|
|---|
| 1206 |
|
|---|
| 1207 | default:
|
|---|
| 1208 | throw_internal_error ("unknown return type in invokeXXX");
|
|---|
| 1209 | }
|
|---|
| 1210 | }
|
|---|
| 1211 | }
|
|---|
| 1212 | NEXT_INSN;
|
|---|
| 1213 |
|
|---|
| 1214 | insn_aconst_null:
|
|---|
| 1215 | PUSHA (NULL);
|
|---|
| 1216 | NEXT_INSN;
|
|---|
| 1217 |
|
|---|
| 1218 | insn_iconst_m1:
|
|---|
| 1219 | PUSHI (-1);
|
|---|
| 1220 | NEXT_INSN;
|
|---|
| 1221 |
|
|---|
| 1222 | insn_iconst_0:
|
|---|
| 1223 | PUSHI (0);
|
|---|
| 1224 | NEXT_INSN;
|
|---|
| 1225 |
|
|---|
| 1226 | insn_iconst_1:
|
|---|
| 1227 | PUSHI (1);
|
|---|
| 1228 | NEXT_INSN;
|
|---|
| 1229 |
|
|---|
| 1230 | insn_iconst_2:
|
|---|
| 1231 | PUSHI (2);
|
|---|
| 1232 | NEXT_INSN;
|
|---|
| 1233 |
|
|---|
| 1234 | insn_iconst_3:
|
|---|
| 1235 | PUSHI (3);
|
|---|
| 1236 | NEXT_INSN;
|
|---|
| 1237 |
|
|---|
| 1238 | insn_iconst_4:
|
|---|
| 1239 | PUSHI (4);
|
|---|
| 1240 | NEXT_INSN;
|
|---|
| 1241 |
|
|---|
| 1242 | insn_iconst_5:
|
|---|
| 1243 | PUSHI (5);
|
|---|
| 1244 | NEXT_INSN;
|
|---|
| 1245 |
|
|---|
| 1246 | insn_lconst_0:
|
|---|
| 1247 | PUSHL (0);
|
|---|
| 1248 | NEXT_INSN;
|
|---|
| 1249 |
|
|---|
| 1250 | insn_lconst_1:
|
|---|
| 1251 | PUSHL (1);
|
|---|
| 1252 | NEXT_INSN;
|
|---|
| 1253 |
|
|---|
| 1254 | insn_fconst_0:
|
|---|
| 1255 | PUSHF (0);
|
|---|
| 1256 | NEXT_INSN;
|
|---|
| 1257 |
|
|---|
| 1258 | insn_fconst_1:
|
|---|
| 1259 | PUSHF (1);
|
|---|
| 1260 | NEXT_INSN;
|
|---|
| 1261 |
|
|---|
| 1262 | insn_fconst_2:
|
|---|
| 1263 | PUSHF (2);
|
|---|
| 1264 | NEXT_INSN;
|
|---|
| 1265 |
|
|---|
| 1266 | insn_dconst_0:
|
|---|
| 1267 | PUSHD (0);
|
|---|
| 1268 | NEXT_INSN;
|
|---|
| 1269 |
|
|---|
| 1270 | insn_dconst_1:
|
|---|
| 1271 | PUSHD (1);
|
|---|
| 1272 | NEXT_INSN;
|
|---|
| 1273 |
|
|---|
| 1274 | insn_bipush:
|
|---|
| 1275 | // For direct threaded, bipush and sipush are the same.
|
|---|
| 1276 | #ifndef DIRECT_THREADED
|
|---|
| 1277 | PUSHI (GET1S ());
|
|---|
| 1278 | NEXT_INSN;
|
|---|
| 1279 | #endif /* DIRECT_THREADED */
|
|---|
| 1280 | insn_sipush:
|
|---|
| 1281 | PUSHI (GET2S ());
|
|---|
| 1282 | NEXT_INSN;
|
|---|
| 1283 |
|
|---|
| 1284 | insn_ldc:
|
|---|
| 1285 | // For direct threaded, ldc and ldc_w are the same.
|
|---|
| 1286 | #ifndef DIRECT_THREADED
|
|---|
| 1287 | PUSHA ((jobject) AVAL1U ());
|
|---|
| 1288 | NEXT_INSN;
|
|---|
| 1289 | #endif /* DIRECT_THREADED */
|
|---|
| 1290 | insn_ldc_w:
|
|---|
| 1291 | PUSHA ((jobject) AVAL2U ());
|
|---|
| 1292 | NEXT_INSN;
|
|---|
| 1293 |
|
|---|
| 1294 | insn_ldc2_w:
|
|---|
| 1295 | {
|
|---|
| 1296 | void *where = AVAL2UP ();
|
|---|
| 1297 | memcpy (sp, where, 2*sizeof (_Jv_word));
|
|---|
| 1298 | sp += 2;
|
|---|
| 1299 | }
|
|---|
| 1300 | NEXT_INSN;
|
|---|
| 1301 |
|
|---|
| 1302 | insn_lload:
|
|---|
| 1303 | LOADL (GET1U ());
|
|---|
| 1304 | NEXT_INSN;
|
|---|
| 1305 |
|
|---|
| 1306 | insn_fload:
|
|---|
| 1307 | LOADF (GET1U ());
|
|---|
| 1308 | NEXT_INSN;
|
|---|
| 1309 |
|
|---|
| 1310 | insn_dload:
|
|---|
| 1311 | LOADD (GET1U ());
|
|---|
| 1312 | NEXT_INSN;
|
|---|
| 1313 |
|
|---|
| 1314 | insn_aload:
|
|---|
| 1315 | LOADA (GET1U ());
|
|---|
| 1316 | NEXT_INSN;
|
|---|
| 1317 |
|
|---|
| 1318 | insn_iload_0:
|
|---|
| 1319 | LOADI (0);
|
|---|
| 1320 | NEXT_INSN;
|
|---|
| 1321 |
|
|---|
| 1322 | insn_iload_2:
|
|---|
| 1323 | LOADI (2);
|
|---|
| 1324 | NEXT_INSN;
|
|---|
| 1325 |
|
|---|
| 1326 | insn_iload_3:
|
|---|
| 1327 | LOADI (3);
|
|---|
| 1328 | NEXT_INSN;
|
|---|
| 1329 |
|
|---|
| 1330 | insn_lload_0:
|
|---|
| 1331 | LOADL (0);
|
|---|
| 1332 | NEXT_INSN;
|
|---|
| 1333 |
|
|---|
| 1334 | insn_lload_1:
|
|---|
| 1335 | LOADL (1);
|
|---|
| 1336 | NEXT_INSN;
|
|---|
| 1337 |
|
|---|
| 1338 | insn_lload_2:
|
|---|
| 1339 | LOADL (2);
|
|---|
| 1340 | NEXT_INSN;
|
|---|
| 1341 |
|
|---|
| 1342 | insn_lload_3:
|
|---|
| 1343 | LOADL (3);
|
|---|
| 1344 | NEXT_INSN;
|
|---|
| 1345 |
|
|---|
| 1346 | insn_fload_0:
|
|---|
| 1347 | LOADF (0);
|
|---|
| 1348 | NEXT_INSN;
|
|---|
| 1349 |
|
|---|
| 1350 | insn_fload_1:
|
|---|
| 1351 | LOADF (1);
|
|---|
| 1352 | NEXT_INSN;
|
|---|
| 1353 |
|
|---|
| 1354 | insn_fload_2:
|
|---|
| 1355 | LOADF (2);
|
|---|
| 1356 | NEXT_INSN;
|
|---|
| 1357 |
|
|---|
| 1358 | insn_fload_3:
|
|---|
| 1359 | LOADF (3);
|
|---|
| 1360 | NEXT_INSN;
|
|---|
| 1361 |
|
|---|
| 1362 | insn_dload_0:
|
|---|
| 1363 | LOADD (0);
|
|---|
| 1364 | NEXT_INSN;
|
|---|
| 1365 |
|
|---|
| 1366 | insn_dload_1:
|
|---|
| 1367 | LOADD (1);
|
|---|
| 1368 | NEXT_INSN;
|
|---|
| 1369 |
|
|---|
| 1370 | insn_dload_2:
|
|---|
| 1371 | LOADD (2);
|
|---|
| 1372 | NEXT_INSN;
|
|---|
| 1373 |
|
|---|
| 1374 | insn_dload_3:
|
|---|
| 1375 | LOADD (3);
|
|---|
| 1376 | NEXT_INSN;
|
|---|
| 1377 |
|
|---|
| 1378 | insn_aload_1:
|
|---|
| 1379 | LOADA(1);
|
|---|
| 1380 | NEXT_INSN;
|
|---|
| 1381 |
|
|---|
| 1382 | insn_aload_2:
|
|---|
| 1383 | LOADA(2);
|
|---|
| 1384 | NEXT_INSN;
|
|---|
| 1385 |
|
|---|
| 1386 | insn_aload_3:
|
|---|
| 1387 | LOADA(3);
|
|---|
| 1388 | NEXT_INSN;
|
|---|
| 1389 |
|
|---|
| 1390 | insn_iaload:
|
|---|
| 1391 | {
|
|---|
| 1392 | jint index = POPI();
|
|---|
| 1393 | jintArray arr = (jintArray) POPA();
|
|---|
| 1394 | NULLARRAYCHECK (arr);
|
|---|
| 1395 | ARRAYBOUNDSCHECK (arr, index);
|
|---|
| 1396 | PUSHI( elements(arr)[index] );
|
|---|
| 1397 | }
|
|---|
| 1398 | NEXT_INSN;
|
|---|
| 1399 |
|
|---|
| 1400 | insn_laload:
|
|---|
| 1401 | {
|
|---|
| 1402 | jint index = POPI();
|
|---|
| 1403 | jlongArray arr = (jlongArray) POPA();
|
|---|
| 1404 | NULLARRAYCHECK (arr);
|
|---|
| 1405 | ARRAYBOUNDSCHECK (arr, index);
|
|---|
| 1406 | PUSHL( elements(arr)[index] );
|
|---|
| 1407 | }
|
|---|
| 1408 | NEXT_INSN;
|
|---|
| 1409 |
|
|---|
| 1410 | insn_faload:
|
|---|
| 1411 | {
|
|---|
| 1412 | jint index = POPI();
|
|---|
| 1413 | jfloatArray arr = (jfloatArray) POPA();
|
|---|
| 1414 | NULLARRAYCHECK (arr);
|
|---|
| 1415 | ARRAYBOUNDSCHECK (arr, index);
|
|---|
| 1416 | PUSHF( elements(arr)[index] );
|
|---|
| 1417 | }
|
|---|
| 1418 | NEXT_INSN;
|
|---|
| 1419 |
|
|---|
| 1420 | insn_daload:
|
|---|
| 1421 | {
|
|---|
| 1422 | jint index = POPI();
|
|---|
| 1423 | jdoubleArray arr = (jdoubleArray) POPA();
|
|---|
| 1424 | NULLARRAYCHECK (arr);
|
|---|
| 1425 | ARRAYBOUNDSCHECK (arr, index);
|
|---|
| 1426 | PUSHD( elements(arr)[index] );
|
|---|
| 1427 | }
|
|---|
| 1428 | NEXT_INSN;
|
|---|
| 1429 |
|
|---|
| 1430 | insn_aaload:
|
|---|
| 1431 | {
|
|---|
| 1432 | jint index = POPI();
|
|---|
| 1433 | jobjectArray arr = (jobjectArray) POPA();
|
|---|
| 1434 | NULLARRAYCHECK (arr);
|
|---|
| 1435 | ARRAYBOUNDSCHECK (arr, index);
|
|---|
| 1436 | PUSHA( elements(arr)[index] );
|
|---|
| 1437 | }
|
|---|
| 1438 | NEXT_INSN;
|
|---|
| 1439 |
|
|---|
| 1440 | insn_baload:
|
|---|
| 1441 | {
|
|---|
| 1442 | jint index = POPI();
|
|---|
| 1443 | jbyteArray arr = (jbyteArray) POPA();
|
|---|
| 1444 | NULLARRAYCHECK (arr);
|
|---|
| 1445 | ARRAYBOUNDSCHECK (arr, index);
|
|---|
| 1446 | PUSHI( elements(arr)[index] );
|
|---|
| 1447 | }
|
|---|
| 1448 | NEXT_INSN;
|
|---|
| 1449 |
|
|---|
| 1450 | insn_caload:
|
|---|
| 1451 | {
|
|---|
| 1452 | jint index = POPI();
|
|---|
| 1453 | jcharArray arr = (jcharArray) POPA();
|
|---|
| 1454 | NULLARRAYCHECK (arr);
|
|---|
| 1455 | ARRAYBOUNDSCHECK (arr, index);
|
|---|
| 1456 | PUSHI( elements(arr)[index] );
|
|---|
| 1457 | }
|
|---|
| 1458 | NEXT_INSN;
|
|---|
| 1459 |
|
|---|
| 1460 | insn_saload:
|
|---|
| 1461 | {
|
|---|
| 1462 | jint index = POPI();
|
|---|
| 1463 | jshortArray arr = (jshortArray) POPA();
|
|---|
| 1464 | NULLARRAYCHECK (arr);
|
|---|
| 1465 | ARRAYBOUNDSCHECK (arr, index);
|
|---|
| 1466 | PUSHI( elements(arr)[index] );
|
|---|
| 1467 | }
|
|---|
| 1468 | NEXT_INSN;
|
|---|
| 1469 |
|
|---|
| 1470 | insn_istore:
|
|---|
| 1471 | STOREI (GET1U ());
|
|---|
| 1472 | NEXT_INSN;
|
|---|
| 1473 |
|
|---|
| 1474 | insn_lstore:
|
|---|
| 1475 | STOREL (GET1U ());
|
|---|
| 1476 | NEXT_INSN;
|
|---|
| 1477 |
|
|---|
| 1478 | insn_fstore:
|
|---|
| 1479 | STOREF (GET1U ());
|
|---|
| 1480 | NEXT_INSN;
|
|---|
| 1481 |
|
|---|
| 1482 | insn_dstore:
|
|---|
| 1483 | STORED (GET1U ());
|
|---|
| 1484 | NEXT_INSN;
|
|---|
| 1485 |
|
|---|
|
|---|
