1 /* GNU/Linux S/390 specific low level interface, for the remote server
3 Copyright (C) 2001, 2002, 2005, 2006, 2007 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 3 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, see <http://www.gnu.org/licenses/>. */
20 /* This file is used for both 31-bit and 64-bit S/390 systems. */
23 #include "linux-low.h"
25 #include <asm/ptrace.h>
27 #define s390_num_regs 51
29 static int s390_regmap[] = {
30 PT_PSWMASK, PT_PSWADDR,
32 PT_GPR0, PT_GPR1, PT_GPR2, PT_GPR3,
33 PT_GPR4, PT_GPR5, PT_GPR6, PT_GPR7,
34 PT_GPR8, PT_GPR9, PT_GPR10, PT_GPR11,
35 PT_GPR12, PT_GPR13, PT_GPR14, PT_GPR15,
37 PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3,
38 PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7,
39 PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11,
40 PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15,
45 PT_FPR0_HI, PT_FPR1_HI, PT_FPR2_HI, PT_FPR3_HI,
46 PT_FPR4_HI, PT_FPR5_HI, PT_FPR6_HI, PT_FPR7_HI,
47 PT_FPR8_HI, PT_FPR9_HI, PT_FPR10_HI, PT_FPR11_HI,
48 PT_FPR12_HI, PT_FPR13_HI, PT_FPR14_HI, PT_FPR15_HI,
50 PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3,
51 PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7,
52 PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11,
53 PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15,
58 s390_cannot_fetch_register (int regno)
60 if (s390_regmap[regno] == -1)
67 s390_cannot_store_register (int regno)
69 if (s390_regmap[regno] == -1)
75 /* Provide only a fill function for the general register set. ps_lgetregs
76 will use this for NPTL support. */
78 static void s390_fill_gregset (void *buf)
82 for (i = 0; i < 34; i++)
83 collect_register (i, (char *) buf + s390_regmap[i]);
86 struct regset_info target_regsets[] = {
87 { 0, 0, 0, GENERAL_REGS, s390_fill_gregset, NULL },
88 { 0, 0, -1, -1, NULL, NULL }
92 static const unsigned char s390_breakpoint[] = { 0, 1 };
93 #define s390_breakpoint_len 2
99 collect_register_by_name ("pswa", &pc);
107 s390_set_pc (CORE_ADDR newpc)
109 unsigned long pc = newpc;
113 supply_register_by_name ("pswa", &pc);
117 s390_breakpoint_at (CORE_ADDR pc)
119 unsigned char c[s390_breakpoint_len];
120 read_inferior_memory (pc, c, s390_breakpoint_len);
121 return memcmp (c, s390_breakpoint, s390_breakpoint_len) == 0;
125 struct linux_target_ops the_low_target = {
128 s390_cannot_fetch_register,
129 s390_cannot_store_register,