1 /* src/vm/jit/i386/md-trap.h - i386 hardware traps
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
33 * Trap number defines.
35 * On this architecture (i386) the trap numbers are used as load
36 * displacements and thus must not be 4- or 8-byte aligned.
38 * NOTE: In trap_init() we have a check whether the offset of
39 * java_arrayheader.data[0] is greater than the largest displacement
40 * defined below. Otherwise normal array loads/stores could trigger
44 #define TRAP_INSTRUCTION_IS_LOAD 1
47 TRAP_NullPointerException = 0,
48 TRAP_ArithmeticException = 1,
49 TRAP_ArrayIndexOutOfBoundsException = 2,
50 TRAP_ArrayStoreException = 3,
52 /* Don't use 4 (could be a normal load offset). */
54 TRAP_ClassCastException = 5,
55 TRAP_CHECK_EXCEPTION = 6,
58 /* Don't use 8 (could be a normal load offset). */
67 * Macro to fixup a compiler stub.
68 * PV : The PV from the compiler stub is equal to the XPC.
69 * RA : We use a framesize of zero here because the call pushed
70 * the return addres onto the stack.
71 * SP : Skip the RA on the stack.
72 * XPC: The XPC is the RA minus 2, because the RA points to the
73 * instruction after the call.
75 #define MD_TRAP_COMPILER_FIXUP(xpc, ra, sp, pv) \
78 (ra) = md_stacktrace_get_returnaddress((sp), 0); \
79 (sp) = (void*) (((uintptr_t) (sp)) + 1 * SIZEOF_VOID_P); \
80 (xpc) = (void*) (((uintptr_t) (ra)) - 2); \
84 #endif /* _MD_TRAP_H */
88 * These are local overrides for various environment variables in Emacs.
89 * Please do not remove this and leave it at the end of the file, where
90 * Emacs will automagically detect them.
91 * ---------------------------------------------------------------------
98 * vim:noexpandtab:sw=4:ts=4: