1 /* HP/UX native interface for HP 300's, for GDB when running under Unix.
2 Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1996, 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. */
27 /* Defining this means some system include files define some extra stuff. */
29 #include <sys/param.h>
34 #include <sys/ptrace.h>
40 static void fetch_inferior_register (int, unsigned int);
42 static void store_inferior_register_1 (int, unsigned int, int);
44 static void store_inferior_register (int, unsigned int);
46 /* Get kernel_u_addr using HPUX-style nlist(). */
47 CORE_ADDR kernel_u_addr
;
54 unsigned char n_length
;
58 static struct hpnlist nl
[] =
63 /* read the value of the u area from the hp-ux kernel */
65 _initialize_hp300ux_nat (void)
67 #ifndef HPUX_VERSION_5
69 kernel_u_addr
= nl
[0].n_value
;
70 #else /* HPUX version 5. */
71 kernel_u_addr
= (CORE_ADDR
) 0x0097900;
75 #define INFERIOR_AR0(u) \
77 (PT_RUAREA, inferior_pid, \
78 (PTRACE_ARG3_TYPE) ((char *) &u.u_ar0 - (char *) &u), 0, 0)) \
82 fetch_inferior_register (register int regno
, register unsigned int regaddr
)
84 #ifndef HPUX_VERSION_5
85 if (regno
== PS_REGNUM
)
95 ps_val
.i
= (ptrace (PT_RUAREA
, inferior_pid
, (PTRACE_ARG3_TYPE
) regaddr
,
98 supply_register (regno
, (char *) ®val
);
101 #endif /* not HPUX_VERSION_5 */
103 char buf
[MAX_REGISTER_RAW_SIZE
];
106 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
); i
+= sizeof (int))
108 *(int *) &buf
[i
] = ptrace (PT_RUAREA
, inferior_pid
,
109 (PTRACE_ARG3_TYPE
) regaddr
, 0, 0);
110 regaddr
+= sizeof (int);
112 supply_register (regno
, buf
);
118 store_inferior_register_1 (int regno
, unsigned int regaddr
, int val
)
121 ptrace (PT_WUAREA
, inferior_pid
, (PTRACE_ARG3_TYPE
) regaddr
, val
, 0);
123 /* HP-UX randomly sets errno to non-zero for regno == 25.
124 However, the value is correctly written, so ignore errno. */
129 sprintf (string_buf
, "writing register number %d", regno
);
130 perror_with_name (string_buf
);
137 store_inferior_register (register int regno
, register unsigned int regaddr
)
139 #ifndef HPUX_VERSION_5
140 if (regno
== PS_REGNUM
)
149 ps_val
.i
= (ptrace (PT_RUAREA
, inferior_pid
, (PTRACE_ARG3_TYPE
) regaddr
,
151 ps_val
.s
[0] = (read_register (regno
));
152 store_inferior_register_1 (regno
, regaddr
, ps_val
.i
);
155 #endif /* not HPUX_VERSION_5 */
159 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
); i
+= sizeof (int))
161 store_inferior_register_1
163 (*(int *) ®isters
[(REGISTER_BYTE (regno
)) + i
]));
164 regaddr
+= sizeof (int);
171 fetch_inferior_registers (int regno
)
174 register unsigned int ar0_offset
;
176 ar0_offset
= (INFERIOR_AR0 (u
));
179 for (regno
= 0; (regno
< FP0_REGNUM
); regno
++)
180 fetch_inferior_register (regno
, (REGISTER_ADDR (ar0_offset
, regno
)));
181 for (; (regno
< NUM_REGS
); regno
++)
182 fetch_inferior_register (regno
, (FP_REGISTER_ADDR (u
, regno
)));
185 fetch_inferior_register (regno
,
187 ? REGISTER_ADDR (ar0_offset
, regno
)
188 : FP_REGISTER_ADDR (u
, regno
)));
191 /* Store our register values back into the inferior.
192 If REGNO is -1, do this for all registers.
193 Otherwise, REGNO specifies which register (so we can save time). */
196 store_inferior_registers (register int regno
)
199 register unsigned int ar0_offset
;
201 if (regno
>= FP0_REGNUM
)
203 store_inferior_register (regno
, (FP_REGISTER_ADDR (u
, regno
)));
207 ar0_offset
= (INFERIOR_AR0 (u
));
210 store_inferior_register (regno
, (REGISTER_ADDR (ar0_offset
, regno
)));
214 for (regno
= 0; (regno
< FP0_REGNUM
); regno
++)
215 store_inferior_register (regno
, (REGISTER_ADDR (ar0_offset
, regno
)));
216 for (; (regno
< NUM_REGS
); regno
++)
217 store_inferior_register (regno
, (FP_REGISTER_ADDR (u
, regno
)));