1 /* err.c --- handle errors for RX simulator.
3 Copyright (C) 2008-2017 Free Software Foundation, Inc.
4 Contributed by Red Hat, Inc.
6 This file is part of the GNU simulators.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU 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, see <http://www.gnu.org/licenses/>. */
26 static unsigned char ee_actions
[SIM_ERR_NUM_ERRORS
];
28 static enum execution_error last_error
;
33 /* GCC may initialize a bitfield by reading the uninitialized byte,
34 masking in the bitfield, and writing the byte back out. */
35 ee_actions
[SIM_ERR_READ_UNWRITTEN_BYTES
] = SIM_ERRACTION_IGNORE
;
36 /* This breaks stack unwinding for exceptions because it leaves
37 MC_PUSHED_PC tags in the unwound stack frames. */
38 ee_actions
[SIM_ERR_CORRUPT_STACK
] = SIM_ERRACTION_IGNORE
;
42 execution_error_init_standalone (void)
46 for (i
= 0; i
< SIM_ERR_NUM_ERRORS
; i
++)
47 ee_actions
[i
] = SIM_ERRACTION_EXIT
;
53 execution_error_init_debugger (void)
57 for (i
= 0; i
< SIM_ERR_NUM_ERRORS
; i
++)
58 ee_actions
[i
] = SIM_ERRACTION_DEBUG
;
64 execution_error_exit_all (void)
68 for (i
= 0; i
< SIM_ERR_NUM_ERRORS
; i
++)
69 ee_actions
[i
] = SIM_ERRACTION_EXIT
;
73 execution_error_warn_all (void)
77 for (i
= 0; i
< SIM_ERR_NUM_ERRORS
; i
++)
78 ee_actions
[i
] = SIM_ERRACTION_WARN
;
82 execution_error_ignore_all (void)
86 for (i
= 0; i
< SIM_ERR_NUM_ERRORS
; i
++)
87 ee_actions
[i
] = SIM_ERRACTION_IGNORE
;
91 execution_error (enum execution_error num
, unsigned long address
)
93 if (ee_actions
[num
] != SIM_ERRACTION_IGNORE
)
96 if (ee_actions
[num
] == SIM_ERRACTION_EXIT
97 || ee_actions
[num
] == SIM_ERRACTION_WARN
)
101 case SIM_ERR_READ_UNWRITTEN_PAGES
:
102 case SIM_ERR_READ_UNWRITTEN_BYTES
:
103 printf("Read from unwritten memory at 0x%lx\n", address
);
106 case SIM_ERR_NULL_POINTER_DEREFERENCE
:
107 printf ("NULL pointer dereference\n");
110 case SIM_ERR_CORRUPT_STACK
:
111 printf ("Stack corruption detected at 0x%lx\n", address
);
115 printf ("Unknown execution error %d\n", num
);
120 if (ee_actions
[num
] == SIM_ERRACTION_EXIT
)
125 execution_error_get_last_error (void)
131 execution_error_clear_last_error (void)
133 last_error
= SIM_ERR_NONE
;
137 execution_error_set_action (enum execution_error num
, enum execution_error_action act
)
139 ee_actions
[num
] = act
;