1 /* GNU/Linux S/390 specific low level interface, for the remote server
3 Copyright (C) 2001, 2002, 2005, 2006
4 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., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
23 /* This file is used for both 31-bit and 64-bit S/390 systems. */
26 #include "linux-low.h"
28 #include <asm/ptrace.h>
30 #define s390_num_regs 51
32 static int s390_regmap
[] = {
33 PT_PSWMASK
, PT_PSWADDR
,
35 PT_GPR0
, PT_GPR1
, PT_GPR2
, PT_GPR3
,
36 PT_GPR4
, PT_GPR5
, PT_GPR6
, PT_GPR7
,
37 PT_GPR8
, PT_GPR9
, PT_GPR10
, PT_GPR11
,
38 PT_GPR12
, PT_GPR13
, PT_GPR14
, PT_GPR15
,
40 PT_ACR0
, PT_ACR1
, PT_ACR2
, PT_ACR3
,
41 PT_ACR4
, PT_ACR5
, PT_ACR6
, PT_ACR7
,
42 PT_ACR8
, PT_ACR9
, PT_ACR10
, PT_ACR11
,
43 PT_ACR12
, PT_ACR13
, PT_ACR14
, PT_ACR15
,
48 PT_FPR0_HI
, PT_FPR1_HI
, PT_FPR2_HI
, PT_FPR3_HI
,
49 PT_FPR4_HI
, PT_FPR5_HI
, PT_FPR6_HI
, PT_FPR7_HI
,
50 PT_FPR8_HI
, PT_FPR9_HI
, PT_FPR10_HI
, PT_FPR11_HI
,
51 PT_FPR12_HI
, PT_FPR13_HI
, PT_FPR14_HI
, PT_FPR15_HI
,
53 PT_FPR0
, PT_FPR1
, PT_FPR2
, PT_FPR3
,
54 PT_FPR4
, PT_FPR5
, PT_FPR6
, PT_FPR7
,
55 PT_FPR8
, PT_FPR9
, PT_FPR10
, PT_FPR11
,
56 PT_FPR12
, PT_FPR13
, PT_FPR14
, PT_FPR15
,
61 s390_cannot_fetch_register (int regno
)
63 if (s390_regmap
[regno
] == -1)
70 s390_cannot_store_register (int regno
)
72 if (s390_regmap
[regno
] == -1)
78 /* Provide only a fill function for the general register set. ps_lgetregs
79 will use this for NPTL support. */
81 static void s390_fill_gregset (void *buf
)
85 for (i
= 0; i
< 34; i
++)
86 collect_register (i
, (char *) buf
+ s390_regmap
[i
]);
89 struct regset_info target_regsets
[] = {
90 { 0, 0, 0, GENERAL_REGS
, s390_fill_gregset
, NULL
},
91 { 0, 0, -1, -1, NULL
, NULL
}
95 static const unsigned char s390_breakpoint
[] = { 0, 1 };
96 #define s390_breakpoint_len 2
102 collect_register_by_name ("pswa", &pc
);
110 s390_set_pc (CORE_ADDR newpc
)
112 unsigned long pc
= newpc
;
116 supply_register_by_name ("pswa", &pc
);
120 s390_breakpoint_at (CORE_ADDR pc
)
122 unsigned char c
[s390_breakpoint_len
];
123 read_inferior_memory (pc
, c
, s390_breakpoint_len
);
124 return memcmp (c
, s390_breakpoint
, s390_breakpoint_len
) == 0;
128 struct linux_target_ops the_low_target
= {
131 s390_cannot_fetch_register
,
132 s390_cannot_store_register
,