1 /* src/vm/jit/intrp/engine.c - #included by engine1.c and engine2.c
3 Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
4 C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
5 E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
6 J. Wenninger, Institut f. Computersprachen - TU Wien
8 This file is part of CACAO.
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License as
12 published by the Free Software Foundation; either version 2, or (at
13 your option) any later version.
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
25 $Id: engine.c 7366 2007-02-15 19:48:11Z twisti $
29 /* #define VM_DEBUG */
39 #include "vm/jit/intrp/intrp.h"
41 #include "md-abi.h" /* required for TRACE_ARGS_NUM */
43 #include "mm/memory.h"
45 #if defined(ENABLE_THREADS)
46 # include "threads/native/threads.h"
48 # include "threads/none/threads.h"
51 #include "vm/builtin.h"
52 #include "vm/exceptions.h"
54 #include "vm/jit/methodheader.h"
55 #include "vm/jit/patcher.h"
56 #include "vm/jit/stacktrace.h"
58 #include "vmcore/loader.h"
59 #include "vmcore/options.h"
62 #if defined(ENABLE_THREADS)
63 # ifndef USE_FAKE_ATOMIC_INSTRUCTIONS
64 # include "machine-instr.h"
66 # include "threads/native/generic-primitives.h"
70 #if !defined(STORE_ORDER_BARRIER) && !defined(ENABLE_THREADS)
71 #define STORE_ORDER_BARRIER() /* nothing */
75 /* threading macros */
76 #define GCC_PR15242_WORKAROUND
77 #ifdef GCC_PR15242_WORKAROUND
79 # define DO_GOTO goto before_goto
82 # define DO_GOTO goto *ip[-1]
87 # define SET_IP(p) do {ip=(p); NEXT_P0;} while (0)
88 # define NEXT_INST (*IP)
89 # define INC_IP(const_inc) do { ip+=(const_inc);} while (0)
91 # define NEXT_P1 (ip++)
92 # define NEXT_P2 do {NEXT_P1_5; DO_GOTO;} while(0)
94 #define NEXT ({DEF_CA NEXT_P1; NEXT_P2;})
95 #define IPTOS NEXT_INST
97 #if defined(__POWERPC__) || defined(__POWERPC64__) || defined(__SPARC__)
101 #if defined(USE_spTOS)
102 #define IF_spTOS(x) x
105 #define spTOS (sp[0])
108 #if defined(__I386__)
109 /* works with gcc-2.95.4 20011002 (Debian prerelease) without static supers */
110 #define SPREG /* __asm__("%esi") */
111 #define TOSREG /* __asm__("%ecx") */
112 #elif defined(__X86_64__)
113 /* works with gcc-4.0.2 (Debian 4.0.2-2) */
114 #define SPREG /* __asm__("%r15") */
122 /* conversion on fetch */
125 #define SUPER_END vm_count_block(IP)
128 #define vm_uncount_block(_ip) /* nothing */
132 #define THROW0 goto throw
134 #define THROW(_ball) do { \
135 __asm__(""); /* work around gcc PR 25285 */ \
136 goto *throw_##_ball; \
139 #define THROW(_ball) do { \
140 goto throw_##_ball##1; \
144 #define THROWCODE(_ball) \
147 *exceptionptr = (stacktrace_inline_##_ball(NULL, (u1 *) fp, (u1 *) IP, (u1 *) IP)); \
151 #define CHECK_NULL_PTR(ptr) \
153 if ((ptr) == NULL) { \
154 THROW(nullpointerexception); \
158 #define THROW_CLASSCASTEXCEPTION(o) \
160 classcastexception_object = o; \
161 THROW(classcastexception); \
164 #define CHECK_OUT_OF_BOUNDS(_array, _idx) \
166 if (length_array(_array) <= (u4) (_idx)) { \
167 arrayindexoutofbounds_index = (_idx); \
168 THROW(arrayindexoutofboundsexception); \
172 #define CHECK_ZERO_DIVISOR(_divisor) \
173 { if (_divisor == 0) \
174 THROW(arithmeticexception); \
178 /* !! alignment bug */
179 #define access_local_long(_offset) \
180 ( *(s8 *)(((u1 *)fp) + (_offset)) )
183 #define length_array(array) \
184 ( ((java_arrayheader*)(array))->size )
186 #define access_array_int(array, index) \
187 ((((java_intarray*)(array))->data)[index])
189 #define access_array_long(array, index) \
190 ((((java_longarray*)(array))->data)[index])
192 #define access_array_char(array, index) \
193 ((((java_chararray*)(array))->data)[index])
195 #define access_array_short(array, index) \
196 ((((java_shortarray*)(array))->data)[index])
198 #define access_array_byte(array, index) \
199 ((((java_bytearray*)(array))->data)[index])
201 #define access_array_addr(array, index) \
202 ((((java_objectarray*)(array))->data)[index])
204 #define access_array_float(array, index) \
205 ((((java_floatarray*)(array))->data)[index])
207 /* (see createcompilerstub in codegen.c) */
208 #define FRAMESIZE(stub) (((Cell *)stub)[1])
211 #define CLEARSTACK(_start, _end) \
212 do {Cell *__start=(_start); MSET(__start,0,u1,(_end)-__start); } while (0)
214 #define CLEARSTACK(_start, _end)
219 #define NAME(_x) if (vm_debug) {fprintf(vm_out, "%lx: %-20s, ", (long)(ip-1), _x); fprintf(vm_out,"fp=%p, sp=%p", fp, sp);}
224 #define LABEL2(name) J_##name: __asm__("");
225 #define LABEL3(name) K_##name: __asm__("");
229 engine(Inst *ip0, Cell * sp0, Cell * fp)
232 register Cell *sp SPREG = sp0;
233 /* Inst ca1; XXX unused? */ /* code address; this is the next dispatched instruction */
234 IF_spTOS(register Cell spTOS TOSREG;)
235 static Inst labels[] = {
236 #define INST_ADDR(_inst) (&&I_##_inst)
237 #include <java-labels.i>
240 #define INST_ADDR(_inst) (&&J_##_inst)
241 #include <java-labels.i>
243 #define INST_ADDR(_inst) (&&K_##_inst)
244 #include <java-labels.i>
247 (Label)&&before_goto,
249 #define INST_ADDR(_inst) (&&H_##_inst)
250 #include <java-labels.i>
253 /* local variables for the various throw codes; this helps make
254 potentially throwing instructions relocatable (instead of a
255 non-relocatable direct jump, they perform an indirect jump) */
256 Label throw_arithmeticexception = &&throw_arithmeticexception1;
257 Label throw_arrayindexoutofboundsexception = &&throw_arrayindexoutofboundsexception1;
258 Label throw_classcastexception = &&throw_classcastexception1;
259 Label throw_nullpointerexception = &&throw_nullpointerexception1;
260 Label throw_arraystoreexception = &&throw_arraystoreexception1;
261 java_objectheader *classcastexception_object = NULL;
262 s4 arrayindexoutofbounds_index = 0; /* pass the index to the throw code */
265 fprintf(vm_out,"entering engine(%p,%p,%p)\n",ip0,sp,fp);
267 return (java_objectheader *)labels;
274 /* ensure that gcc does not constant-propagate the contents of
275 these variables and thus undo our relocatability work */
276 throw_arithmeticexception = 0;
277 throw_arrayindexoutofboundsexception = 0;
278 throw_classcastexception = 0;
279 throw_nullpointerexception = 0;
280 throw_arraystoreexception = 0;
282 /* the actual codes jumped to through the ...exception variables */
283 THROWCODE(arithmeticexception);
284 THROWCODE(nullpointerexception);
285 THROWCODE(arraystoreexception);
287 throw_classcastexception1:
289 *exceptionptr = stacktrace_inline_classcastexception(NULL, (u1 *) fp, (u1 *) IP, (u1 *) IP, classcastexception_object);
293 throw_arrayindexoutofboundsexception1:
295 *exceptionptr = stacktrace_inline_arrayindexoutofboundsexception(NULL, (u1 *) fp, (u1 *) IP, (u1 *) IP, arrayindexoutofbounds_index);
300 /* I don't have a clue where these things come from,
301 but I've put them in macros.h for the moment */
302 IF_spTOS(spTOS = sp[0]);
307 #define INST_ADDR(_inst) (&&I_##_inst)
310 after_last: return NULL;
315 * These are local overrides for various environment variables in Emacs.
316 * Please do not remove this and leave it at the end of the file, where
317 * Emacs will automagically detect them.
318 * ---------------------------------------------------------------------
321 * indent-tabs-mode: t
325 * vim:noexpandtab:sw=4:ts=4: