1 /* src/vm/jit/code.h - codeinfo struct for representing compiled code
3 Copyright (C) 1996-2005, 2006, 2007, 2008
4 CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
6 This file is part of CACAO.
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License as
10 published by the Free Software Foundation; either version 2, or (at
11 your option) any later version.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
36 #include "toolbox/list.h"
38 #include "vm/global.h"
39 #include "vm/method.h"
41 #include "vm/jit/exceptiontable.h"
42 #include "vm/jit/linenumbertable.h"
43 #include "vm/jit/methodheader.h"
44 #include "vm/jit/replace.hpp"
47 /* constants ******************************************************************/
49 #define CODE_FLAG_INVALID 0x0001
50 #define CODE_FLAG_LEAFMETHOD 0x0002
51 #define CODE_FLAG_SYNCHRONIZED 0x0004
52 #define CODE_FLAG_TLH 0x0008
55 /* codeinfo *******************************************************************
57 A codeinfo represents a particular realization of a method in
60 ATTENTION: The methodinfo entry in the code-structure MUST have the
61 offset 0, otherwise we have a problem in our compiler stub. This is
62 checked with an assert in code_init().
64 *******************************************************************************/
67 methodinfo *m; /* method this is a realization of */
68 codeinfo *prev; /* previous codeinfo of this method */
70 uint32_t flags; /* OR of CODE_FLAG_ constants */
72 u1 optlevel; /* optimization level of this code */
73 s4 basicblockcount; /* number of basic blocks */
75 int32_t synchronizedoffset; /* stack offset of synchronized obj. */
78 u1 *mcode; /* pointer to machine code */
79 u1 *entrypoint; /* machine code entry point */
80 s4 mcodelength; /* length of generated machine code */
82 exceptiontable_t *exceptiontable;
83 linenumbertable_t *linenumbertable;
89 s4 stackframesize; /* size of the stackframe in slots */
91 #if defined(ENABLE_REPLACEMENT)
92 rplpoint *rplpoints; /* replacement points */
93 rplalloc *regalloc; /* register allocation info */
94 s4 rplpointcount; /* number of replacement points */
95 s4 globalcount; /* number of global allocations */
96 s4 regalloccount; /* number of total allocations */
97 s4 memuse; /* number of arg + local slots */
98 u1 savedintcount; /* number of callee saved int regs */
99 u1 savedfltcount; /* number of callee saved flt regs */
100 # if defined(HAS_ADDRESS_REGISTER_FILE)
101 u1 savedadrcount; /* number of callee saved adr regs */
103 u1 *savedmcode; /* saved code under patches */
106 #if defined(ENABLE_PROFILING)
107 u4 frequency; /* number of method invocations */
109 s8 cycles; /* number of cpu cycles */
118 /* inline functions ***********************************************************/
120 /* code_xxx_invalid ************************************************************
122 Functions for CODE_FLAG_INVALID.
124 *******************************************************************************/
126 inline static int code_is_invalid(codeinfo *code)
128 return (code->flags & CODE_FLAG_INVALID);
131 inline static void code_flag_invalid(codeinfo *code)
133 code->flags |= CODE_FLAG_INVALID;
136 inline static void code_unflag_invalid(codeinfo *code)
138 code->flags &= ~CODE_FLAG_INVALID;
142 /* code_xxx_leafmethod *********************************************************
144 Functions for CODE_FLAG_LEAFMETHOD.
146 *******************************************************************************/
148 inline static int code_is_leafmethod(codeinfo *code)
150 return (code->flags & CODE_FLAG_LEAFMETHOD);
153 inline static void code_flag_leafmethod(codeinfo *code)
155 code->flags |= CODE_FLAG_LEAFMETHOD;
158 inline static void code_unflag_leafmethod(codeinfo *code)
160 code->flags &= ~CODE_FLAG_LEAFMETHOD;
164 /* code_xxx_synchronized *******************************************************
166 Functions for CODE_FLAG_SYNCHRONIZED.
168 *******************************************************************************/
170 inline static int code_is_synchronized(codeinfo *code)
172 return (code->flags & CODE_FLAG_SYNCHRONIZED);
175 inline static void code_flag_synchronized(codeinfo *code)
177 code->flags |= CODE_FLAG_SYNCHRONIZED;
180 inline static void code_unflag_synchronized(codeinfo *code)
182 code->flags &= ~CODE_FLAG_SYNCHRONIZED;
186 /* code_get_codeinfo_for_pv ****************************************************
188 Return the codeinfo for the given PV.
196 *******************************************************************************/
198 inline static codeinfo *code_get_codeinfo_for_pv(void *pv)
204 code = *((codeinfo **) (((uintptr_t) pv) + CodeinfoPointer));
210 /* function prototypes ********************************************************/
212 void code_init(void);
214 codeinfo *code_codeinfo_new(methodinfo *m);
215 void code_codeinfo_free(codeinfo *code);
217 codeinfo *code_find_codeinfo_for_pc(void *pc);
218 codeinfo *code_find_codeinfo_for_pc_nocheck(void *pc);
220 methodinfo *code_get_methodinfo_for_pv(void *pv);
222 #if defined(ENABLE_REPLACEMENT)
223 int code_get_sync_slot_count(codeinfo *code);
224 #endif /* defined(ENABLE_REPLACEMENT) */
226 void code_free_code_of_method(methodinfo *m);
236 * These are local overrides for various environment variables in Emacs.
237 * Please do not remove this and leave it at the end of the file, where
238 * Emacs will automagically detect them.
239 * ---------------------------------------------------------------------
242 * indent-tabs-mode: t
246 * vim:noexpandtab:sw=4:ts=4: