1 /* Target-dependent code for NetBSD/hppa
3 Copyright (C) 2008-2012 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/>. */
25 #include "trad-frame.h"
26 #include "tramp-frame.h"
28 #include "gdb_assert.h"
29 #include "gdb_string.h"
31 #include "hppa-tdep.h"
32 #include "hppabsd-tdep.h"
34 /* From <machine/mcontext.h>. */
35 static int hppanbsd_mc_reg_offset[] =
38 -1, 1 * 4, 2 * 4, 3 * 4,
39 4 * 4, 5 * 4, 6 * 4, 7 * 4,
40 8 * 4, 9 * 4, 10 * 4, 11 * 4,
41 12 * 4, 13 * 4, 14 * 4, 15 * 4,
42 16 * 4, 17 * 4, 18 * 4, 19 * 4,
43 20 * 4, 21 * 4, 22 * 4, 23 * 4,
44 24 * 4, 25 * 4, 26 * 4, 27 * 4,
45 28 * 4, 29 * 4, 30 * 4, 31 * 4,
47 32 * 4, /* HPPA_SAR_REGNUM */
48 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
49 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
50 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
51 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
52 -1, /* HPPA_EIEM_REGNUM */
53 -1, /* HPPA_IIR_REGNUM */
54 -1, /* HPPA_ISR_REGNUM */
55 -1, /* HPPA_IOR_REGNUM */
56 0 * 4, /* HPPA_IPSW_REGNUM */
58 41 * 4, /* HPPA_SR4_REGNUM */
67 static void hppanbsd_sigtramp_cache_init (const struct tramp_frame *,
69 struct trad_frame_cache *,
72 static const struct tramp_frame hppanbsd_sigtramp_si4 =
77 { 0xc7d7c012, -1 }, /* bb,>=,n %arg3, 30, 1f */
78 { 0xd6e01c1e, -1 }, /* depwi 0,31,2,%arg3 */
79 { 0x0ee81093, -1 }, /* ldw 4(%arg3), %r19 */
80 { 0x0ee01097, -1 }, /* ldw 0(%arg3), %arg3 */
82 { 0xe8404000, -1 }, /* blr %r0, %rp */
83 { 0xeae0c002, -1 }, /* bv,n %r0(%arg3) */
84 { 0x08000240, -1 }, /* nop */
86 { 0x0803025a, -1 }, /* copy %r3, %arg0 */
87 { 0x20200801, -1 }, /* ldil -40000000, %r1 */
88 { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
89 { 0x34160268, -1 }, /* ldi 134, %t1 ; SYS_setcontext */
91 { 0x081c025a, -1 }, /* copy ret0, %arg0 */
92 { 0x20200801, -1 }, /* ldil -40000000, %r1 */
93 { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
94 { 0x34160002, -1 }, /* ldi 1, %t1 ; SYS_exit */
95 { TRAMP_SENTINEL_INSN, -1 }
97 hppanbsd_sigtramp_cache_init
102 hppanbsd_sigtramp_cache_init (const struct tramp_frame *self,
103 struct frame_info *this_frame,
104 struct trad_frame_cache *this_cache,
107 struct gdbarch *gdbarch = get_frame_arch (this_frame);
108 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
109 CORE_ADDR sp = get_frame_register_unsigned (this_frame, HPPA_SP_REGNUM);
115 reg_offset = hppanbsd_mc_reg_offset;
116 num_regs = ARRAY_SIZE (hppanbsd_mc_reg_offset);
120 /* offsetof(struct sigframe_siginfo, sf_uc) = 128 */
122 /* offsetof(ucontext_t, uc_mcontext) == 40 */
125 for (i = 0; i < num_regs; i++)
126 if (reg_offset[i] != -1)
127 trad_frame_set_reg_addr (this_cache, i, base + reg_offset[i]);
129 /* Construct the frame ID using the function start. */
130 trad_frame_set_id (this_cache, frame_id_build (sp, func));
133 /* Core file support. */
135 /* Sizeof `struct reg' in <machine/reg.h>. */
136 #define HPPANBSD_SIZEOF_GREGS (44 * 4)
138 static int hppanbsd_reg_offset[] =
141 -1, 1 * 4, 2 * 4, 3 * 4,
142 4 * 4, 5 * 4, 6 * 4, 7 * 4,
143 8 * 4, 9 * 4, 10 * 4, 11 * 4,
144 12 * 4, 13 * 4, 14 * 4, 15 * 4,
145 16 * 4, 17 * 4, 18 * 4, 19 * 4,
146 20 * 4, 21 * 4, 22 * 4, 23 * 4,
147 24 * 4, 25 * 4, 26 * 4, 27 * 4,
148 28 * 4, 29 * 4, 30 * 4, 31 * 4,
150 32 * 4, /* HPPA_SAR_REGNUM */
151 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
152 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
153 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
154 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
155 -1, /* HPPA_EIEM_REGNUM */
156 -1, /* HPPA_IIR_REGNUM */
157 -1, /* HPPA_ISR_REGNUM */
158 -1, /* HPPA_IOR_REGNUM */
159 0 * 4, /* HPPA_IPSW_REGNUM */
162 /* Supply register REGNUM from the buffer specified by GREGS and LEN
163 in the general-purpose register set REGSET to register cache
164 REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
167 hppanbsd_supply_gregset (const struct regset *regset,
168 struct regcache *regcache,
169 int regnum, const void *gregs, size_t len)
171 const gdb_byte *regs = gregs;
175 gdb_assert (len >= HPPANBSD_SIZEOF_GREGS);
177 for (i = 0; i < ARRAY_SIZE (hppanbsd_reg_offset); i++)
178 if (hppanbsd_reg_offset[i] != -1)
179 if (regnum == -1 || regnum == i)
180 regcache_raw_supply (regcache, i, regs + hppanbsd_reg_offset[i]);
183 /* NetBSD/hppa register set. */
185 static struct regset hppanbsd_gregset =
188 hppanbsd_supply_gregset
191 /* Return the appropriate register set for the core section identified
192 by SECT_NAME and SECT_SIZE. */
194 static const struct regset *
195 hppanbsd_regset_from_core_section (struct gdbarch *gdbarch,
196 const char *sect_name, size_t sect_size)
198 if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPANBSD_SIZEOF_GREGS)
199 return &hppanbsd_gregset;
205 hppanbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
207 /* Obviously NetBSD is BSD-based. */
208 hppabsd_init_abi (info, gdbarch);
210 /* Core file support. */
211 set_gdbarch_regset_from_core_section
212 (gdbarch, hppanbsd_regset_from_core_section);
214 tramp_frame_prepend_unwinder (gdbarch, &hppanbsd_sigtramp_si4);
218 /* Provide a prototype to silence -Wmissing-prototypes. */
219 extern initialize_file_ftype _initialize_hppanbsd_tdep;
222 _initialize_hppanbsd_tdep (void)
224 gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF,