1 /* Native-dependent code for BSD Unix running on i386's, for GDB.
2 Copyright 1988, 1989, 1991, 1992, 1994, 1995, 1996, 1998, 1999, 2000,
3 2001 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
24 #ifdef FETCH_INFERIOR_REGISTERS
25 #include <sys/types.h>
26 #include <sys/ptrace.h>
27 #include <machine/reg.h>
28 #include <machine/frame.h>
30 #include "gdbcore.h" /* for registers_fetched() */
34 fetch_inferior_registers (int regno
)
36 struct reg inferior_registers
;
38 ptrace (PT_GETREGS
, PIDGET (inferior_ptid
),
39 (PTRACE_ARG3_TYPE
) & inferior_registers
, 0);
40 memcpy (®isters
[REGISTER_BYTE (0)], &inferior_registers
, 4 * NUM_REGS
);
45 store_inferior_registers (int regno
)
47 struct reg inferior_registers
;
49 memcpy (&inferior_registers
, ®isters
[REGISTER_BYTE (0)], 4 * NUM_REGS
);
50 ptrace (PT_SETREGS
, PIDGET (inferior_ptid
),
51 (PTRACE_ARG3_TYPE
) & inferior_registers
, 0);
61 fetch_core_registers (char *core_reg_sect
, unsigned core_reg_size
, int which
,
64 struct md_core
*core_reg
= (struct md_core
*) core_reg_sect
;
66 /* integer registers */
67 memcpy (®isters
[REGISTER_BYTE (0)], &core_reg
->intreg
,
69 /* floating point registers */
75 #include <machine/reg.h>
77 /* this table must line up with REGISTER_NAMES in tm-i386.h */
78 /* symbols like 'tEAX' come from <machine/reg.h> */
79 static int tregmap
[] =
81 tEAX
, tECX
, tEDX
, tEBX
,
82 tESP
, tEBP
, tESI
, tEDI
,
83 tEIP
, tEFLAGS
, tCS
, tSS
87 static int sregmap
[] =
89 sEAX
, sECX
, sEDX
, sEBX
,
90 sESP
, sEBP
, sESI
, sEDI
,
91 sEIP
, sEFLAGS
, sCS
, sSS
95 /* FreeBSD has decided to collapse the s* and t* symbols. So if the s*
96 ones aren't around, use the t* ones for sregmap too. */
98 static int sregmap
[] =
100 tEAX
, tECX
, tEDX
, tEBX
,
101 tESP
, tEBP
, tESI
, tEDI
,
102 tEIP
, tEFLAGS
, tCS
, tSS
106 /* blockend is the value of u.u_ar0, and points to the
107 place where ES is stored. */
110 i386_register_u_addr (int blockend
, int regnum
)
112 /* The following condition is a kludge to get at the proper register map
113 depending upon the state of pcb_flag.
114 The proper condition would be
115 if (u.u_pcb.pcb_flag & FM_TRAP)
116 but that would require a ptrace call here and wouldn't work
119 if (blockend
< 0x1fcc)
120 return (blockend
+ 4 * tregmap
[regnum
]);
122 return (blockend
+ 4 * sregmap
[regnum
]);
125 #endif /* !FETCH_INFERIOR_REGISTERS */
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