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root/cebix/BasiliskII/src/Unix/sigsegv.h
Revision: 1.15
Committed: 2010-10-23T21:13:21Z (14 years ago) by asvitkine
Content type: text/plain
Branch: MAIN
CVS Tags: HEAD
Changes since 1.14: +4 -1 lines
Log Message:
Fix issue from my last change where it ended up not defining
SIGSEGV_FAULT_ADDRESS_FAST at all on PPC builds.

File Contents

# Content
1 /*
2 * sigsegv.h - SIGSEGV signals support
3 *
4 * Derived from Bruno Haible's work on his SIGSEGV library for clisp
5 * <http://clisp.sourceforge.net/>
6 *
7 * Basilisk II (C) 1997-2008 Christian Bauer
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24 #ifndef SIGSEGV_H
25 #define SIGSEGV_H
26
27 #define SIGSEGV_MAJOR_VERSION 1
28 #define SIGSEGV_MINOR_VERSION 0
29 #define SIGSEGV_MICRO_VERSION 0
30
31 #define SIGSEGV_CHECK_VERSION(MAJOR, MINOR, MICRO) \
32 (SIGSEGV_MAJOR_VERSION > (MAJOR) || \
33 (SIGSEGV_MAJOR_VERSION == (MAJOR) && SIGSEGV_MINOR_VERSION > (MINOR)) || \
34 (SIGSEGV_MAJOR_VERSION == (MAJOR) && SIGSEGV_MINOR_VERSION == (MINOR) && SIGSEGV_MICRO_VERSION >= (MICRO)))
35
36 // Address type
37 typedef char *sigsegv_address_t;
38
39 // SIGSEGV handler argument (forward declaration)
40
41 #if HAVE_MACH_EXCEPTIONS
42 #if defined(__APPLE__) && defined(__MACH__)
43 extern "C" {
44 #include <mach/mach.h>
45 #include <mach/mach_error.h>
46 }
47
48 #ifdef __ppc__
49 #if __DARWIN_UNIX03 && defined _STRUCT_PPC_THREAD_STATE
50 #define MACH_FIELD_NAME(X) __CONCAT(__,X)
51 #endif
52 #define SIGSEGV_EXCEPTION_STATE_TYPE ppc_exception_state_t
53 #define SIGSEGV_EXCEPTION_STATE_FLAVOR PPC_EXCEPTION_STATE
54 #define SIGSEGV_EXCEPTION_STATE_COUNT PPC_EXCEPTION_STATE_COUNT
55 #define SIGSEGV_FAULT_ADDRESS SIP->exc_state.MACH_FIELD_NAME(dar)
56 #define SIGSEGV_THREAD_STATE_TYPE ppc_thread_state_t
57 #define SIGSEGV_THREAD_STATE_FLAVOR PPC_THREAD_STATE
58 #define SIGSEGV_THREAD_STATE_COUNT PPC_THREAD_STATE_COUNT
59 #define SIGSEGV_FAULT_INSTRUCTION SIP->thr_state.MACH_FIELD_NAME(srr0)
60 #define SIGSEGV_SKIP_INSTRUCTION powerpc_skip_instruction
61 #define SIGSEGV_REGISTER_FILE (unsigned long *)&SIP->thr_state.MACH_FIELD_NAME(srr0), (unsigned long *)&SIP->thr_state.MACH_FIELD_NAME(r0)
62 #endif
63 #ifdef __ppc64__
64 #if __DARWIN_UNIX03 && defined _STRUCT_PPC_THREAD_STATE64
65 #define MACH_FIELD_NAME(X) __CONCAT(__,X)
66 #endif
67 #define SIGSEGV_EXCEPTION_STATE_TYPE ppc_exception_state64_t
68 #define SIGSEGV_EXCEPTION_STATE_FLAVOR PPC_EXCEPTION_STATE64
69 #define SIGSEGV_EXCEPTION_STATE_COUNT PPC_EXCEPTION_STATE64_COUNT
70 #define SIGSEGV_FAULT_ADDRESS SIP->exc_state.MACH_FIELD_NAME(dar)
71 #define SIGSEGV_THREAD_STATE_TYPE ppc_thread_state64_t
72 #define SIGSEGV_THREAD_STATE_FLAVOR PPC_THREAD_STATE64
73 #define SIGSEGV_THREAD_STATE_COUNT PPC_THREAD_STATE64_COUNT
74 #define SIGSEGV_FAULT_INSTRUCTION SIP->thr_state.MACH_FIELD_NAME(srr0)
75 #define SIGSEGV_SKIP_INSTRUCTION powerpc_skip_instruction
76 #define SIGSEGV_REGISTER_FILE (unsigned long *)&SIP->thr_state.MACH_FIELD_NAME(srr0), (unsigned long *)&SIP->thr_state.MACH_FIELD_NAME(r0)
77 #endif
78 #ifdef __i386__
79 #if __DARWIN_UNIX03 && defined _STRUCT_X86_THREAD_STATE32
80 #define MACH_FIELD_NAME(X) __CONCAT(__,X)
81 #endif
82 #define SIGSEGV_EXCEPTION_STATE_TYPE i386_exception_state_t
83 #define SIGSEGV_EXCEPTION_STATE_FLAVOR i386_EXCEPTION_STATE
84 #define SIGSEGV_EXCEPTION_STATE_COUNT i386_EXCEPTION_STATE_COUNT
85 #define SIGSEGV_FAULT_ADDRESS SIP->exc_state.MACH_FIELD_NAME(faultvaddr)
86 #define SIGSEGV_THREAD_STATE_TYPE i386_thread_state_t
87 #define SIGSEGV_THREAD_STATE_FLAVOR i386_THREAD_STATE
88 #define SIGSEGV_THREAD_STATE_COUNT i386_THREAD_STATE_COUNT
89 #define SIGSEGV_FAULT_INSTRUCTION SIP->thr_state.MACH_FIELD_NAME(eip)
90 #define SIGSEGV_SKIP_INSTRUCTION ix86_skip_instruction
91 #define SIGSEGV_REGISTER_FILE ((SIGSEGV_REGISTER_TYPE *)&SIP->thr_state.MACH_FIELD_NAME(eax)) /* EAX is the first GPR we consider */
92 #endif
93 #ifdef __x86_64__
94 #if __DARWIN_UNIX03 && defined _STRUCT_X86_THREAD_STATE64
95 #define MACH_FIELD_NAME(X) __CONCAT(__,X)
96 #endif
97 #define SIGSEGV_EXCEPTION_STATE_TYPE x86_exception_state64_t
98 #define SIGSEGV_EXCEPTION_STATE_FLAVOR x86_EXCEPTION_STATE64
99 #define SIGSEGV_EXCEPTION_STATE_COUNT x86_EXCEPTION_STATE64_COUNT
100 #define SIGSEGV_FAULT_ADDRESS SIP->exc_state.MACH_FIELD_NAME(faultvaddr)
101 #define SIGSEGV_THREAD_STATE_TYPE x86_thread_state64_t
102 #define SIGSEGV_THREAD_STATE_FLAVOR x86_THREAD_STATE64
103 #define SIGSEGV_THREAD_STATE_COUNT x86_THREAD_STATE64_COUNT
104 #define SIGSEGV_FAULT_INSTRUCTION SIP->thr_state.MACH_FIELD_NAME(rip)
105 #define SIGSEGV_SKIP_INSTRUCTION ix86_skip_instruction
106 #define SIGSEGV_REGISTER_FILE ((SIGSEGV_REGISTER_TYPE *)&SIP->thr_state.MACH_FIELD_NAME(rax)) /* RAX is the first GPR we consider */
107 #endif
108 #ifdef __x86_64__
109 #define SIGSEGV_FAULT_ADDRESS_FAST (((uint64_t)code[1])|0x100000000)
110 #else
111 #define SIGSEGV_FAULT_ADDRESS_FAST code[1]
112 #endif
113 #define SIGSEGV_FAULT_INSTRUCTION_FAST SIGSEGV_INVALID_ADDRESS
114 #define SIGSEGV_FAULT_HANDLER_ARGLIST mach_port_t thread, mach_exception_data_t code
115 #define SIGSEGV_FAULT_HANDLER_ARGS thread, code
116
117 #endif
118 #endif
119
120 struct sigsegv_info_t {
121 sigsegv_address_t addr;
122 sigsegv_address_t pc;
123 #ifdef HAVE_MACH_EXCEPTIONS
124 mach_port_t thread;
125 bool has_exc_state;
126 SIGSEGV_EXCEPTION_STATE_TYPE exc_state;
127 mach_msg_type_number_t exc_state_count;
128 bool has_thr_state;
129 SIGSEGV_THREAD_STATE_TYPE thr_state;
130 mach_msg_type_number_t thr_state_count;
131 #endif
132 };
133
134
135 // SIGSEGV handler return state
136 enum sigsegv_return_t {
137 SIGSEGV_RETURN_SUCCESS,
138 SIGSEGV_RETURN_FAILURE,
139 SIGSEGV_RETURN_SKIP_INSTRUCTION
140 };
141
142 // Type of a SIGSEGV handler. Returns boolean expressing successful operation
143 typedef sigsegv_return_t (*sigsegv_fault_handler_t)(sigsegv_info_t *sip);
144
145 // Type of a SIGSEGV state dump function
146 typedef void (*sigsegv_state_dumper_t)(sigsegv_info_t *sip);
147
148 // Install a SIGSEGV handler. Returns boolean expressing success
149 extern bool sigsegv_install_handler(sigsegv_fault_handler_t handler);
150
151 // Remove the user SIGSEGV handler, revert to default behavior
152 extern void sigsegv_uninstall_handler(void);
153
154 // Set callback function when we cannot handle the fault
155 extern void sigsegv_set_dump_state(sigsegv_state_dumper_t handler);
156
157 // Return the address of the invalid memory reference
158 extern sigsegv_address_t sigsegv_get_fault_address(sigsegv_info_t *sip);
159
160 // Return the address of the instruction that caused the fault, or
161 // SIGSEGV_INVALID_ADDRESS if we could not retrieve this information
162 extern sigsegv_address_t sigsegv_get_fault_instruction_address(sigsegv_info_t *sip);
163
164 // Define an address that is bound to be invalid for a program counter
165 const sigsegv_address_t SIGSEGV_INVALID_ADDRESS = (sigsegv_address_t)(-1UL);
166
167 #endif /* SIGSEGV_H */