1 /* Native support for GNU/Linux x86.
3 Copyright 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997,
4 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
6 This file is part of GDB.
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 2 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, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
26 /* GNU/Linux supports the i386 hardware debugging registers. */
27 #define I386_USE_GENERIC_WATCHPOINTS
29 #include "i386/nm-i386.h"
30 #include "config/nm-linux.h"
32 /* Support for the user area. */
34 /* Return the size of the user struct. */
35 extern int kernel_u_size (void);
36 #define KERNEL_U_SIZE kernel_u_size()
38 /* This is the amount to substract from u.u_ar0 to get the offset in
39 the core file of the register values. */
40 #define KERNEL_U_ADDR 0
42 extern CORE_ADDR
register_u_addr (CORE_ADDR blockend
, int regnum
);
43 #define REGISTER_U_ADDR(addr, blockend, regnum) \
44 (addr) = register_u_addr (blockend, regnum)
46 /* Provide access to the i386 hardware debugging registers. */
48 extern void i386_linux_dr_set_control (unsigned long control
);
49 #define I386_DR_LOW_SET_CONTROL(control) \
50 i386_linux_dr_set_control (control)
52 extern void i386_linux_dr_set_addr (int regnum
, CORE_ADDR addr
);
53 #define I386_DR_LOW_SET_ADDR(regnum, addr) \
54 i386_linux_dr_set_addr (regnum, addr)
56 extern void i386_linux_dr_reset_addr (int regnum
);
57 #define I386_DR_LOW_RESET_ADDR(regnum) \
58 i386_linux_dr_reset_addr (regnum)
60 extern unsigned long i386_linux_dr_get_status (void);
61 #define I386_DR_LOW_GET_STATUS() \
62 i386_linux_dr_get_status ()
65 /* Override copies of {fetch,store}_inferior_registers in `infptrace.c'. */
66 #define FETCH_INFERIOR_REGISTERS
68 /* Nevertheless, define CANNOT_{FETCH,STORE}_REGISTER, because we
69 might fall back on the code `infptrace.c' (well a copy of that code
70 in `i386-linux-nat.c' for now) and we can access only the
71 general-purpose registers in that way. */
72 extern int cannot_fetch_register (int regno
);
73 extern int cannot_store_register (int regno
);
74 #define CANNOT_FETCH_REGISTER(regno) cannot_fetch_register (regno)
75 #define CANNOT_STORE_REGISTER(regno) cannot_store_register (regno)
77 #ifdef HAVE_PTRACE_GETFPXREGS
78 /* Include register set support for the SSE registers. */
79 #define FILL_FPXREGSET
82 /* Override child_resume in `infptrace.c'. */
83 #define DEPRECATED_CHILD_RESUME
85 /* `linux-nat.c' and `i386-nat.c' have their own versions of
86 child_post_startup_inferior. Define this to use the copy in
87 `i386-linux-nat.c' instead, which calls both.
89 NOTE drow/2003-08-17: This is ugly beyond words, but properly
90 fixing it will require some serious surgery. Ideally the target
91 stack could be used for this. */
92 #define LINUX_CHILD_POST_STARTUP_INFERIOR
94 #endif /* nm-linux.h */
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