Line data Source code
1 : /* src/vm/jit/patcher-common.hpp - architecture independent code patching stuff
2 :
3 : Copyright (C) 1996-2011
4 : CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
5 :
6 : This file is part of CACAO.
7 :
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.
12 :
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.
17 :
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
21 : 02110-1301, USA.
22 :
23 : */
24 :
25 :
26 : #ifndef _PATCHER_COMMON_HPP
27 : #define _PATCHER_COMMON_HPP
28 :
29 : /* forward typedefs ***********************************************************/
30 :
31 : typedef struct patchref_t patchref_t;
32 :
33 : #include "config.h"
34 : #include "vm/types.hpp"
35 :
36 : #include "toolbox/list.hpp"
37 :
38 : #include "vm/global.hpp"
39 :
40 : struct jitdata;
41 :
42 : /* patchref_t ******************************************************************
43 :
44 : A patcher reference contains information about a code position
45 : which needs additional code patching during runtime.
46 :
47 : *******************************************************************************/
48 :
49 0 : struct patchref_t {
50 : uintptr_t mpc; /* absolute position in code segment */
51 : uintptr_t datap; /* absolute position in data segment */
52 : int32_t disp; /* displacement of ref in the data segment */
53 : int16_t disp_mb; /* auxiliary code displacement (for membar) */
54 : int16_t patch_align; /* auxiliary displacement for alignment */
55 : functionptr patcher; /* patcher function to call */
56 : void* ref; /* reference passed */
57 : uint32_t mcode; /* machine code to be patched back in */
58 : bool done; /* XXX preliminary: patch already applied? */
59 : };
60 :
61 :
62 : /* macros *********************************************************************/
63 :
64 :
65 : /* function prototypes ********************************************************/
66 :
67 : void patcher_list_create(codeinfo *code);
68 : void patcher_list_reset(codeinfo *code);
69 : void patcher_list_free(codeinfo *code);
70 :
71 : #if !defined(NDEBUG)
72 : void patcher_list_show(codeinfo *code);
73 : #endif
74 :
75 : patchref_t *patcher_add_patch_ref(jitdata *jd, functionptr patcher, void* ref, s4 disp);
76 :
77 : void patcher_resolve(jitdata* jd);
78 :
79 : bool patcher_is_patched(patchref_t* pr);
80 : bool patcher_is_patched_at(void* pc);
81 :
82 : // MD function.
83 : bool patcher_is_valid_trap_instruction_at(void* pc);
84 :
85 : bool patcher_handler(u1 *pc);
86 :
87 :
88 : /* empty patcher (just patches back original mcode) ***************************/
89 :
90 : void patcher_patch_code(patchref_t *pr);
91 :
92 :
93 : /* patcher prototypes and macros **********************************************/
94 :
95 : /* new patcher functions */
96 :
97 : bool patcher_resolve_class(patchref_t *pr);
98 : #define PATCHER_resolve_class (functionptr) patcher_resolve_class
99 :
100 : bool patcher_initialize_class(patchref_t *pr);
101 : #define PATCHER_initialize_class (functionptr) patcher_initialize_class
102 :
103 : bool patcher_resolve_classref_to_classinfo(patchref_t *pr);
104 : #define PATCHER_resolve_classref_to_classinfo (functionptr) patcher_resolve_classref_to_classinfo
105 :
106 : bool patcher_resolve_classref_to_vftbl(patchref_t *pr);
107 : #define PATCHER_resolve_classref_to_vftbl (functionptr) patcher_resolve_classref_to_vftbl
108 :
109 : bool patcher_resolve_classref_to_index(patchref_t *pr);
110 : #define PATCHER_resolve_classref_to_index (functionptr) patcher_resolve_classref_to_index
111 :
112 : bool patcher_resolve_classref_to_flags(patchref_t *pr);
113 : #define PATCHER_resolve_classref_to_flags (functionptr) patcher_resolve_classref_to_flags
114 :
115 : bool patcher_resolve_native_function(patchref_t *pr);
116 : #define PATCHER_resolve_native_function (functionptr) patcher_resolve_native_function
117 :
118 : bool patcher_breakpoint(patchref_t *pr);
119 : #define PATCHER_breakpoint (functionptr) patcher_breakpoint
120 :
121 : /* old patcher functions */
122 :
123 : bool patcher_get_putstatic(patchref_t *pr);
124 : #define PATCHER_get_putstatic (functionptr) patcher_get_putstatic
125 :
126 : #if defined(__I386__)
127 :
128 : bool patcher_getfield(patchref_t *pr);
129 : #define PATCHER_getfield (functionptr) patcher_getfield
130 :
131 : bool patcher_putfield(patchref_t *pr);
132 : #define PATCHER_putfield (functionptr) patcher_putfield
133 :
134 : #else
135 :
136 : bool patcher_get_putfield(patchref_t *pr);
137 : #define PATCHER_get_putfield (functionptr) patcher_get_putfield
138 :
139 : #endif /* defined(__I386__) */
140 :
141 : #if defined(__I386__) || defined(__X86_64__)
142 :
143 : bool patcher_putfieldconst(patchref_t *pr);
144 : #define PATCHER_putfieldconst (functionptr) patcher_putfieldconst
145 :
146 : #endif /* defined(__I386__) || defined(__X86_64__) */
147 :
148 : bool patcher_invokestatic_special(patchref_t *pr);
149 : #define PATCHER_invokestatic_special (functionptr) patcher_invokestatic_special
150 :
151 : bool patcher_invokevirtual(patchref_t *pr);
152 : #define PATCHER_invokevirtual (functionptr) patcher_invokevirtual
153 :
154 : bool patcher_invokeinterface(patchref_t *pr);
155 : #define PATCHER_invokeinterface (functionptr) patcher_invokeinterface
156 :
157 : #if defined(__ALPHA__) || defined(__I386__) || defined(__MIPS__) || defined(__POWERPC__) || defined(__POWERPC64__) || defined(__S390__) || defined(__X86_64__)
158 :
159 : bool patcher_checkcast_interface(patchref_t *pr);
160 : #define PATCHER_checkcast_interface (functionptr) patcher_checkcast_interface
161 :
162 : bool patcher_instanceof_interface(patchref_t *pr);
163 : #define PATCHER_instanceof_interface (functionptr) patcher_instanceof_interface
164 :
165 : #endif /* defined(__ALPHA__) || defined(__I386__) || defined(__MIPS__) || defined(__POWERPC__) || defined(__POWERPC64__) || defined(__S390__) || defined(__X86_64__) */
166 :
167 : #if defined(__S390__)
168 :
169 : bool patcher_checkcast_instanceof_interface(patchref_t *pr);
170 : #define PATCHER_checkcast_instanceof_interface (functionptr) patcher_checkcast_instanceof_interface
171 :
172 : #endif /* defined(__S390__) */
173 :
174 : #if defined(__I386__)
175 :
176 : bool patcher_aconst(patchref_t *pr);
177 : #define PATCHER_aconst (functionptr) patcher_aconst
178 :
179 : bool patcher_builtin_multianewarray(patchref_t *pr);
180 : #define PATCHER_builtin_multianewarray (functionptr) patcher_builtin_multianewarray
181 :
182 : bool patcher_builtin_arraycheckcast(patchref_t *pr);
183 : #define PATCHER_builtin_arraycheckcast (functionptr) patcher_builtin_arraycheckcast
184 :
185 : bool patcher_checkcast_instanceof_flags(patchref_t *pr);
186 : #define PATCHER_checkcast_instanceof_flags (functionptr) patcher_checkcast_instanceof_flags
187 :
188 : bool patcher_checkcast_class(patchref_t *pr);
189 : #define PATCHER_checkcast_class (functionptr) patcher_checkcast_class
190 :
191 : bool patcher_instanceof_class(patchref_t *pr);
192 : #define PATCHER_instanceof_class (functionptr) patcher_instanceof_class
193 :
194 : #endif /* defined(__I386__) */
195 :
196 : #endif // _PATCHER_COMMON_HPP
197 :
198 :
199 : /*
200 : * These are local overrides for various environment variables in Emacs.
201 : * Please do not remove this and leave it at the end of the file, where
202 : * Emacs will automagically detect them.
203 : * ---------------------------------------------------------------------
204 : * Local variables:
205 : * mode: c++
206 : * indent-tabs-mode: t
207 : * c-basic-offset: 4
208 : * tab-width: 4
209 : * End:
210 : * vim:noexpandtab:sw=4:ts=4:
211 : */
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