1 /* Target-dependent code for NetBSD/hppa
3 Copyright (C) 2008-2016 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 "hppa-tdep.h"
29 #include "hppa-bsd-tdep.h"
31 /* From <machine/mcontext.h>. */
32 static int hppanbsd_mc_reg_offset[] =
35 -1, 1 * 4, 2 * 4, 3 * 4,
36 4 * 4, 5 * 4, 6 * 4, 7 * 4,
37 8 * 4, 9 * 4, 10 * 4, 11 * 4,
38 12 * 4, 13 * 4, 14 * 4, 15 * 4,
39 16 * 4, 17 * 4, 18 * 4, 19 * 4,
40 20 * 4, 21 * 4, 22 * 4, 23 * 4,
41 24 * 4, 25 * 4, 26 * 4, 27 * 4,
42 28 * 4, 29 * 4, 30 * 4, 31 * 4,
44 32 * 4, /* HPPA_SAR_REGNUM */
45 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
46 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
47 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
48 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
49 -1, /* HPPA_EIEM_REGNUM */
50 -1, /* HPPA_IIR_REGNUM */
51 -1, /* HPPA_ISR_REGNUM */
52 -1, /* HPPA_IOR_REGNUM */
53 0 * 4, /* HPPA_IPSW_REGNUM */
55 41 * 4, /* HPPA_SR4_REGNUM */
64 static void hppanbsd_sigtramp_cache_init (const struct tramp_frame *,
66 struct trad_frame_cache *,
69 static const struct tramp_frame hppanbsd_sigtramp_si4 =
74 { 0xc7d7c012, -1 }, /* bb,>=,n %arg3, 30, 1f */
75 { 0xd6e01c1e, -1 }, /* depwi 0,31,2,%arg3 */
76 { 0x0ee81093, -1 }, /* ldw 4(%arg3), %r19 */
77 { 0x0ee01097, -1 }, /* ldw 0(%arg3), %arg3 */
79 { 0xe8404000, -1 }, /* blr %r0, %rp */
80 { 0xeae0c002, -1 }, /* bv,n %r0(%arg3) */
81 { 0x08000240, -1 }, /* nop */
83 { 0x0803025a, -1 }, /* copy %r3, %arg0 */
84 { 0x20200801, -1 }, /* ldil -40000000, %r1 */
85 { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
86 { 0x34160268, -1 }, /* ldi 134, %t1 ; SYS_setcontext */
88 { 0x081c025a, -1 }, /* copy ret0, %arg0 */
89 { 0x20200801, -1 }, /* ldil -40000000, %r1 */
90 { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
91 { 0x34160002, -1 }, /* ldi 1, %t1 ; SYS_exit */
92 { TRAMP_SENTINEL_INSN, -1 }
94 hppanbsd_sigtramp_cache_init
99 hppanbsd_sigtramp_cache_init (const struct tramp_frame *self,
100 struct frame_info *this_frame,
101 struct trad_frame_cache *this_cache,
104 CORE_ADDR sp = get_frame_register_unsigned (this_frame, HPPA_SP_REGNUM);
110 reg_offset = hppanbsd_mc_reg_offset;
111 num_regs = ARRAY_SIZE (hppanbsd_mc_reg_offset);
115 /* offsetof(struct sigframe_siginfo, sf_uc) = 128 */
117 /* offsetof(ucontext_t, uc_mcontext) == 40 */
120 for (i = 0; i < num_regs; i++)
121 if (reg_offset[i] != -1)
122 trad_frame_set_reg_addr (this_cache, i, base + reg_offset[i]);
124 /* Construct the frame ID using the function start. */
125 trad_frame_set_id (this_cache, frame_id_build (sp, func));
128 /* Core file support. */
130 /* Sizeof `struct reg' in <machine/reg.h>. */
131 #define HPPANBSD_SIZEOF_GREGS (44 * 4)
133 static int hppanbsd_reg_offset[] =
136 -1, 1 * 4, 2 * 4, 3 * 4,
137 4 * 4, 5 * 4, 6 * 4, 7 * 4,
138 8 * 4, 9 * 4, 10 * 4, 11 * 4,
139 12 * 4, 13 * 4, 14 * 4, 15 * 4,
140 16 * 4, 17 * 4, 18 * 4, 19 * 4,
141 20 * 4, 21 * 4, 22 * 4, 23 * 4,
142 24 * 4, 25 * 4, 26 * 4, 27 * 4,
143 28 * 4, 29 * 4, 30 * 4, 31 * 4,
145 32 * 4, /* HPPA_SAR_REGNUM */
146 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
147 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
148 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
149 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
150 -1, /* HPPA_EIEM_REGNUM */
151 -1, /* HPPA_IIR_REGNUM */
152 -1, /* HPPA_ISR_REGNUM */
153 -1, /* HPPA_IOR_REGNUM */
154 0 * 4, /* HPPA_IPSW_REGNUM */
157 /* Supply register REGNUM from the buffer specified by GREGS and LEN
158 in the general-purpose register set REGSET to register cache
159 REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
162 hppanbsd_supply_gregset (const struct regset *regset,
163 struct regcache *regcache,
164 int regnum, const void *gregs, size_t len)
166 const gdb_byte *regs = (const gdb_byte *) gregs;
169 gdb_assert (len >= HPPANBSD_SIZEOF_GREGS);
171 for (i = 0; i < ARRAY_SIZE (hppanbsd_reg_offset); i++)
172 if (hppanbsd_reg_offset[i] != -1)
173 if (regnum == -1 || regnum == i)
174 regcache_raw_supply (regcache, i, regs + hppanbsd_reg_offset[i]);
177 /* NetBSD/hppa register set. */
179 static const struct regset hppanbsd_gregset =
182 hppanbsd_supply_gregset
185 /* Iterate over supported core file register note sections. */
188 hppanbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
189 iterate_over_regset_sections_cb *cb,
191 const struct regcache *regcache)
193 cb (".reg", HPPANBSD_SIZEOF_GREGS, &hppanbsd_gregset, NULL, cb_data);
197 hppanbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
199 /* Obviously NetBSD is BSD-based. */
200 hppabsd_init_abi (info, gdbarch);
202 /* Core file support. */
203 set_gdbarch_iterate_over_regset_sections
204 (gdbarch, hppanbsd_iterate_over_regset_sections);
206 tramp_frame_prepend_unwinder (gdbarch, &hppanbsd_sigtramp_si4);
210 /* Provide a prototype to silence -Wmissing-prototypes. */
211 extern initialize_file_ftype _initialize_hppanbsd_tdep;
214 _initialize_hppanbsd_tdep (void)
216 gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD,