1 /* Target-dependent code for NetBSD/hppa
3 Copyright (C) 2008 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 2 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, write to the Free Software
19 Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
27 #include "trad-frame.h"
28 #include "tramp-frame.h"
30 #include "gdb_assert.h"
31 #include "gdb_string.h"
33 #include "hppa-tdep.h"
35 /* From <machine/mcontext.h>. */
36 static int hppanbsd_mc_reg_offset[] =
39 -1, 1 * 4, 2 * 4, 3 * 4,
40 4 * 4, 5 * 4, 6 * 4, 7 * 4,
41 8 * 4, 9 * 4, 10 * 4, 11 * 4,
42 12 * 4, 13 * 4, 14 * 4, 15 * 4,
43 16 * 4, 17 * 4, 18 * 4, 19 * 4,
44 20 * 4, 21 * 4, 22 * 4, 23 * 4,
45 24 * 4, 25 * 4, 26 * 4, 27 * 4,
46 28 * 4, 29 * 4, 30 * 4, 31 * 4,
48 32 * 4, /* HPPA_SAR_REGNUM */
49 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
50 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
51 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
52 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
53 -1, /* HPPA_EIEM_REGNUM */
54 -1, /* HPPA_IIR_REGNUM */
55 -1, /* HPPA_ISR_REGNUM */
56 -1, /* HPPA_IOR_REGNUM */
57 0 * 4, /* HPPA_IPSW_REGNUM */
59 41 * 4, /* HPPA_SR4_REGNUM */
68 static void hppanbsd_sigtramp_cache_init (const struct tramp_frame *,
70 struct trad_frame_cache *,
73 static const struct tramp_frame hppanbsd_sigtramp_si4 =
78 { 0xc7d7c012, -1 }, /* bb,>=,n %arg3, 30, 1f */
79 { 0xd6e01c1e, -1 }, /* depwi 0,31,2,%arg3 */
80 { 0x0ee81093, -1 }, /* ldw 4(%arg3), %r19 */
81 { 0x0ee01097, -1 }, /* ldw 0(%arg3), %arg3 */
83 { 0xe8404000, -1 }, /* blr %r0, %rp */
84 { 0xeae0c002, -1 }, /* bv,n %r0(%arg3) */
85 { 0x08000240, -1 }, /* nop */
87 { 0x0803025a, -1 }, /* copy %r3, %arg0 */
88 { 0x20200801, -1 }, /* ldil -40000000, %r1 */
89 { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
90 { 0x34160268, -1 }, /* ldi 134, %t1 ; SYS_setcontext */
92 { 0x081c025a, -1 }, /* copy ret0, %arg0 */
93 { 0x20200801, -1 }, /* ldil -40000000, %r1 */
94 { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
95 { 0x34160002, -1 }, /* ldi 1, %t1 ; SYS_exit */
96 { TRAMP_SENTINEL_INSN, -1 }
98 hppanbsd_sigtramp_cache_init
103 hppanbsd_sigtramp_cache_init (const struct tramp_frame *self,
104 struct frame_info *next_frame,
105 struct trad_frame_cache *this_cache,
108 struct gdbarch *gdbarch = get_frame_arch (next_frame);
109 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
110 CORE_ADDR sp = frame_unwind_register_unsigned (next_frame, HPPA_SP_REGNUM);
116 reg_offset = hppanbsd_mc_reg_offset;
117 num_regs = ARRAY_SIZE (hppanbsd_mc_reg_offset);
121 /* offsetof(struct sigframe_siginfo, sf_uc) = 128 */
123 /* offsetof(ucontext_t, uc_mcontext) == 40 */
126 for (i = 0; i < num_regs; i++)
127 if (reg_offset[i] != -1)
128 trad_frame_set_reg_addr (this_cache, i, base + reg_offset[i]);
130 /* Construct the frame ID using the function start. */
131 trad_frame_set_id (this_cache, frame_id_build (sp, func));
134 /* Core file support. */
136 /* Sizeof `struct reg' in <machine/reg.h>. */
137 #define HPPANBSD_SIZEOF_GREGS (44 * 4)
139 static int hppanbsd_reg_offset[] =
142 -1, 1 * 4, 2 * 4, 3 * 4,
143 4 * 4, 5 * 4, 6 * 4, 7 * 4,
144 8 * 4, 9 * 4, 10 * 4, 11 * 4,
145 12 * 4, 13 * 4, 14 * 4, 15 * 4,
146 16 * 4, 17 * 4, 18 * 4, 19 * 4,
147 20 * 4, 21 * 4, 22 * 4, 23 * 4,
148 24 * 4, 25 * 4, 26 * 4, 27 * 4,
149 28 * 4, 29 * 4, 30 * 4, 31 * 4,
151 32 * 4, /* HPPA_SAR_REGNUM */
152 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
153 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
154 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
155 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
156 -1, /* HPPA_EIEM_REGNUM */
157 -1, /* HPPA_IIR_REGNUM */
158 -1, /* HPPA_ISR_REGNUM */
159 -1, /* HPPA_IOR_REGNUM */
160 0 * 4, /* HPPA_IPSW_REGNUM */
163 /* Supply register REGNUM from the buffer specified by GREGS and LEN
164 in the general-purpose register set REGSET to register cache
165 REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
168 hppanbsd_supply_gregset (const struct regset *regset, 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;
204 void hppabsd_init_abi (struct gdbarch_info, struct gdbarch *);
207 hppanbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
209 /* Obviously NetBSD is BSD-based. */
210 hppabsd_init_abi (info, gdbarch);
212 /* Core file support. */
213 set_gdbarch_regset_from_core_section
214 (gdbarch, hppanbsd_regset_from_core_section);
216 tramp_frame_prepend_unwinder (gdbarch, &hppanbsd_sigtramp_si4);
220 /* Provide a prototype to silence -Wmissing-prototypes. */
221 void _initialize_hppabsd_tdep (void);
224 _initialize_hppanbsd_tdep (void)
226 gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF,