1 /* Target-dependent code for NetBSD/hppa
3 Copyright (C) 2008-2014 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"
30 #include "hppa-tdep.h"
31 #include "hppabsd-tdep.h"
33 /* From <machine/mcontext.h>. */
34 static int hppanbsd_mc_reg_offset[] =
37 -1, 1 * 4, 2 * 4, 3 * 4,
38 4 * 4, 5 * 4, 6 * 4, 7 * 4,
39 8 * 4, 9 * 4, 10 * 4, 11 * 4,
40 12 * 4, 13 * 4, 14 * 4, 15 * 4,
41 16 * 4, 17 * 4, 18 * 4, 19 * 4,
42 20 * 4, 21 * 4, 22 * 4, 23 * 4,
43 24 * 4, 25 * 4, 26 * 4, 27 * 4,
44 28 * 4, 29 * 4, 30 * 4, 31 * 4,
46 32 * 4, /* HPPA_SAR_REGNUM */
47 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
48 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
49 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
50 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
51 -1, /* HPPA_EIEM_REGNUM */
52 -1, /* HPPA_IIR_REGNUM */
53 -1, /* HPPA_ISR_REGNUM */
54 -1, /* HPPA_IOR_REGNUM */
55 0 * 4, /* HPPA_IPSW_REGNUM */
57 41 * 4, /* HPPA_SR4_REGNUM */
66 static void hppanbsd_sigtramp_cache_init (const struct tramp_frame *,
68 struct trad_frame_cache *,
71 static const struct tramp_frame hppanbsd_sigtramp_si4 =
76 { 0xc7d7c012, -1 }, /* bb,>=,n %arg3, 30, 1f */
77 { 0xd6e01c1e, -1 }, /* depwi 0,31,2,%arg3 */
78 { 0x0ee81093, -1 }, /* ldw 4(%arg3), %r19 */
79 { 0x0ee01097, -1 }, /* ldw 0(%arg3), %arg3 */
81 { 0xe8404000, -1 }, /* blr %r0, %rp */
82 { 0xeae0c002, -1 }, /* bv,n %r0(%arg3) */
83 { 0x08000240, -1 }, /* nop */
85 { 0x0803025a, -1 }, /* copy %r3, %arg0 */
86 { 0x20200801, -1 }, /* ldil -40000000, %r1 */
87 { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
88 { 0x34160268, -1 }, /* ldi 134, %t1 ; SYS_setcontext */
90 { 0x081c025a, -1 }, /* copy ret0, %arg0 */
91 { 0x20200801, -1 }, /* ldil -40000000, %r1 */
92 { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
93 { 0x34160002, -1 }, /* ldi 1, %t1 ; SYS_exit */
94 { TRAMP_SENTINEL_INSN, -1 }
96 hppanbsd_sigtramp_cache_init
101 hppanbsd_sigtramp_cache_init (const struct tramp_frame *self,
102 struct frame_info *this_frame,
103 struct trad_frame_cache *this_cache,
106 struct gdbarch *gdbarch = get_frame_arch (this_frame);
107 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
108 CORE_ADDR sp = get_frame_register_unsigned (this_frame, HPPA_SP_REGNUM);
114 reg_offset = hppanbsd_mc_reg_offset;
115 num_regs = ARRAY_SIZE (hppanbsd_mc_reg_offset);
119 /* offsetof(struct sigframe_siginfo, sf_uc) = 128 */
121 /* offsetof(ucontext_t, uc_mcontext) == 40 */
124 for (i = 0; i < num_regs; i++)
125 if (reg_offset[i] != -1)
126 trad_frame_set_reg_addr (this_cache, i, base + reg_offset[i]);
128 /* Construct the frame ID using the function start. */
129 trad_frame_set_id (this_cache, frame_id_build (sp, func));
132 /* Core file support. */
134 /* Sizeof `struct reg' in <machine/reg.h>. */
135 #define HPPANBSD_SIZEOF_GREGS (44 * 4)
137 static int hppanbsd_reg_offset[] =
140 -1, 1 * 4, 2 * 4, 3 * 4,
141 4 * 4, 5 * 4, 6 * 4, 7 * 4,
142 8 * 4, 9 * 4, 10 * 4, 11 * 4,
143 12 * 4, 13 * 4, 14 * 4, 15 * 4,
144 16 * 4, 17 * 4, 18 * 4, 19 * 4,
145 20 * 4, 21 * 4, 22 * 4, 23 * 4,
146 24 * 4, 25 * 4, 26 * 4, 27 * 4,
147 28 * 4, 29 * 4, 30 * 4, 31 * 4,
149 32 * 4, /* HPPA_SAR_REGNUM */
150 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
151 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
152 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
153 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
154 -1, /* HPPA_EIEM_REGNUM */
155 -1, /* HPPA_IIR_REGNUM */
156 -1, /* HPPA_ISR_REGNUM */
157 -1, /* HPPA_IOR_REGNUM */
158 0 * 4, /* HPPA_IPSW_REGNUM */
161 /* Supply register REGNUM from the buffer specified by GREGS and LEN
162 in the general-purpose register set REGSET to register cache
163 REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
166 hppanbsd_supply_gregset (const struct regset *regset,
167 struct regcache *regcache,
168 int regnum, const void *gregs, size_t len)
170 const gdb_byte *regs = gregs;
173 gdb_assert (len >= HPPANBSD_SIZEOF_GREGS);
175 for (i = 0; i < ARRAY_SIZE (hppanbsd_reg_offset); i++)
176 if (hppanbsd_reg_offset[i] != -1)
177 if (regnum == -1 || regnum == i)
178 regcache_raw_supply (regcache, i, regs + hppanbsd_reg_offset[i]);
181 /* NetBSD/hppa register set. */
183 static const struct regset hppanbsd_gregset =
186 hppanbsd_supply_gregset
189 /* Return the appropriate register set for the core section identified
190 by SECT_NAME and SECT_SIZE. */
192 static const struct regset *
193 hppanbsd_regset_from_core_section (struct gdbarch *gdbarch,
194 const char *sect_name, size_t sect_size)
196 if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPANBSD_SIZEOF_GREGS)
197 return &hppanbsd_gregset;
203 hppanbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
205 /* Obviously NetBSD is BSD-based. */
206 hppabsd_init_abi (info, gdbarch);
208 /* Core file support. */
209 set_gdbarch_regset_from_core_section
210 (gdbarch, hppanbsd_regset_from_core_section);
212 tramp_frame_prepend_unwinder (gdbarch, &hppanbsd_sigtramp_si4);
216 /* Provide a prototype to silence -Wmissing-prototypes. */
217 extern initialize_file_ftype _initialize_hppanbsd_tdep;
220 _initialize_hppanbsd_tdep (void)
222 gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF,