Change section_offsets to a std::vector
[deliverable/binutils-gdb.git] / gdb / x86-nat.h
1 /* Native-dependent code for x86 (i386 and x86-64).
2
3 Low level functions to implement Operating System specific
4 code to manipulate x86 debug registers.
5
6 Copyright (C) 2009-2020 Free Software Foundation, Inc.
7
8 This file is part of GDB.
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22
23 #ifndef X86_NAT_H
24 #define X86_NAT_H 1
25
26 #include "breakpoint.h"
27 #include "nat/x86-dregs.h"
28 #include "target.h"
29
30 /* Hardware-assisted breakpoints and watchpoints. */
31
32 /* Use this function to set x86_dr_low debug_register_length field
33 rather than setting it directly to check that the length is only
34 set once. It also enables the 'maint set/show show-debug-regs'
35 command. */
36
37 extern void x86_set_debug_register_length (int len);
38
39 /* Use this function to reset the x86-nat.c debug register state. */
40
41 extern void x86_cleanup_dregs (void);
42
43 /* Called whenever GDB is no longer debugging process PID. It deletes
44 data structures that keep track of debug register state. */
45
46 extern void x86_forget_process (pid_t pid);
47
48 /* Helper functions used by x86_nat_target below. See their
49 definitions. */
50
51 extern int x86_can_use_hw_breakpoint (enum bptype type, int cnt, int othertype);
52 extern int x86_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len);
53 extern int x86_stopped_by_watchpoint ();
54 extern int x86_stopped_data_address (CORE_ADDR *addr_p);
55 extern int x86_insert_watchpoint (CORE_ADDR addr, int len,
56 enum target_hw_bp_type type,
57 struct expression *cond);
58 extern int x86_remove_watchpoint (CORE_ADDR addr, int len,
59 enum target_hw_bp_type type,
60 struct expression *cond);
61 extern int x86_insert_hw_breakpoint (struct gdbarch *gdbarch,
62 struct bp_target_info *bp_tgt);
63 extern int x86_remove_hw_breakpoint (struct gdbarch *gdbarch,
64 struct bp_target_info *bp_tgt);
65 extern int x86_stopped_by_hw_breakpoint ();
66
67 /* Convenience template mixin used to add x86 watchpoints support to a
68 target. */
69
70 template <typename BaseTarget>
71 struct x86_nat_target : public BaseTarget
72 {
73 /* Hook in the x86 hardware watchpoints/breakpoints support. */
74
75 int can_use_hw_breakpoint (enum bptype type, int cnt, int othertype) override
76 { return x86_can_use_hw_breakpoint (type, cnt, othertype); }
77
78 int region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) override
79 { return x86_region_ok_for_hw_watchpoint (addr, len); }
80
81 int insert_watchpoint (CORE_ADDR addr, int len,
82 enum target_hw_bp_type type,
83 struct expression *cond) override
84 { return x86_insert_watchpoint (addr, len, type, cond); }
85
86 int remove_watchpoint (CORE_ADDR addr, int len,
87 enum target_hw_bp_type type,
88 struct expression *cond) override
89 { return x86_remove_watchpoint (addr, len, type, cond); }
90
91 int insert_hw_breakpoint (struct gdbarch *gdbarch,
92 struct bp_target_info *bp_tgt) override
93 { return x86_insert_hw_breakpoint (gdbarch, bp_tgt); }
94
95 int remove_hw_breakpoint (struct gdbarch *gdbarch,
96 struct bp_target_info *bp_tgt) override
97 { return x86_remove_hw_breakpoint (gdbarch, bp_tgt); }
98
99 bool stopped_by_watchpoint () override
100 { return x86_stopped_by_watchpoint (); }
101
102 bool stopped_data_address (CORE_ADDR *addr_p) override
103 { return x86_stopped_data_address (addr_p); }
104
105 /* A target must provide an implementation of the
106 "supports_stopped_by_hw_breakpoint" target method before this
107 callback will be used. */
108 bool stopped_by_hw_breakpoint () override
109 { return x86_stopped_by_hw_breakpoint (); }
110 };
111
112 #endif /* X86_NAT_H */
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