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/tmp/gdb-7.10/gdb/hppanbsd-tdep.c
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1 /* Target-dependent code for NetBSD/hppa
2 
3  Copyright (C) 2008-2015 Free Software Foundation, Inc.
4 
5  This file is part of GDB.
6 
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.
11 
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.
16 
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/>. */
19 
20 #include "defs.h"
21 #include "osabi.h"
22 #include "regcache.h"
23 #include "regset.h"
24 
25 #include "trad-frame.h"
26 #include "tramp-frame.h"
27 
28 #include "hppa-tdep.h"
29 #include "hppabsd-tdep.h"
30 
31 /* From <machine/mcontext.h>. */
32 static int hppanbsd_mc_reg_offset[] =
33 {
34  /* r0 ... r31 */
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,
43 
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 */
54  -1, /* spare? */
55  41 * 4, /* HPPA_SR4_REGNUM */
56  37 * 4, /* sr0 */
57  38 * 4, /* sr1 */
58  39 * 4, /* sr2 */
59  40 * 4, /* sr3 */
60 
61  /* more tbd */
62 };
63 
64 static void hppanbsd_sigtramp_cache_init (const struct tramp_frame *,
65  struct frame_info *,
66  struct trad_frame_cache *,
67  CORE_ADDR);
68 
69 static const struct tramp_frame hppanbsd_sigtramp_si4 =
70 {
72  4,
73  {
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 */
78  /* 1: */
79  { 0xe8404000, -1 }, /* blr %r0, %rp */
80  { 0xeae0c002, -1 }, /* bv,n %r0(%arg3) */
81  { 0x08000240, -1 }, /* nop */
82 
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 */
87 
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 }
93  },
95 };
96 
97 
98 static void
100  struct frame_info *this_frame,
101  struct trad_frame_cache *this_cache,
102  CORE_ADDR func)
103 {
104  struct gdbarch *gdbarch = get_frame_arch (this_frame);
105  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
107  CORE_ADDR base;
108  int *reg_offset;
109  int num_regs;
110  int i;
111 
112  reg_offset = hppanbsd_mc_reg_offset;
113  num_regs = ARRAY_SIZE (hppanbsd_mc_reg_offset);
114 
115  /* frame pointer */
116  base = sp - 0x280;
117  /* offsetof(struct sigframe_siginfo, sf_uc) = 128 */
118  base += 128;
119  /* offsetof(ucontext_t, uc_mcontext) == 40 */
120  base += 40;
121 
122  for (i = 0; i < num_regs; i++)
123  if (reg_offset[i] != -1)
124  trad_frame_set_reg_addr (this_cache, i, base + reg_offset[i]);
125 
126  /* Construct the frame ID using the function start. */
127  trad_frame_set_id (this_cache, frame_id_build (sp, func));
128 }
129 
130 /* Core file support. */
131 
132 /* Sizeof `struct reg' in <machine/reg.h>. */
133 #define HPPANBSD_SIZEOF_GREGS (44 * 4)
134 
135 static int hppanbsd_reg_offset[] =
136 {
137  /* r0 ... r31 */
138  -1, 1 * 4, 2 * 4, 3 * 4,
139  4 * 4, 5 * 4, 6 * 4, 7 * 4,
140  8 * 4, 9 * 4, 10 * 4, 11 * 4,
141  12 * 4, 13 * 4, 14 * 4, 15 * 4,
142  16 * 4, 17 * 4, 18 * 4, 19 * 4,
143  20 * 4, 21 * 4, 22 * 4, 23 * 4,
144  24 * 4, 25 * 4, 26 * 4, 27 * 4,
145  28 * 4, 29 * 4, 30 * 4, 31 * 4,
146 
147  32 * 4, /* HPPA_SAR_REGNUM */
148  35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
149  33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
150  36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
151  34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
152  -1, /* HPPA_EIEM_REGNUM */
153  -1, /* HPPA_IIR_REGNUM */
154  -1, /* HPPA_ISR_REGNUM */
155  -1, /* HPPA_IOR_REGNUM */
156  0 * 4, /* HPPA_IPSW_REGNUM */
157 };
158 
159 /* Supply register REGNUM from the buffer specified by GREGS and LEN
160  in the general-purpose register set REGSET to register cache
161  REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
162 
163 static void
165  struct regcache *regcache,
166  int regnum, const void *gregs, size_t len)
167 {
168  const gdb_byte *regs = gregs;
169  int i;
170 
172 
173  for (i = 0; i < ARRAY_SIZE (hppanbsd_reg_offset); i++)
174  if (hppanbsd_reg_offset[i] != -1)
175  if (regnum == -1 || regnum == i)
176  regcache_raw_supply (regcache, i, regs + hppanbsd_reg_offset[i]);
177 }
178 
179 /* NetBSD/hppa register set. */
180 
181 static const struct regset hppanbsd_gregset =
182 {
183  NULL,
185 };
186 
187 /* Iterate over supported core file register note sections. */
188 
189 static void
192  void *cb_data,
193  const struct regcache *regcache)
194 {
195  cb (".reg", HPPANBSD_SIZEOF_GREGS, &hppanbsd_gregset, NULL, cb_data);
196 }
197 
198 static void
200 {
201  /* Obviously NetBSD is BSD-based. */
202  hppabsd_init_abi (info, gdbarch);
203 
204  /* Core file support. */
207 
208  tramp_frame_prepend_unwinder (gdbarch, &hppanbsd_sigtramp_si4);
209 }
210 
211 
212 /* Provide a prototype to silence -Wmissing-prototypes. */
214 
215 void
217 {
218  gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF,
220 }
void trad_frame_set_reg_addr(struct trad_frame_cache *this_trad_cache, int regnum, CORE_ADDR addr)
Definition: trad-frame.c:119
struct frame_id frame_id_build(CORE_ADDR stack_addr, CORE_ADDR code_addr)
Definition: frame.c:554
bfd_vma CORE_ADDR
Definition: common-types.h:41
#define TRAMP_SENTINEL_INSN
Definition: tramp-frame.h:44
void(* func)(char *)
void hppabsd_init_abi(struct gdbarch_info info, struct gdbarch *gdbarch)
Definition: hppabsd-tdep.c:120
static void hppanbsd_supply_gregset(const struct regset *regset, struct regcache *regcache, int regnum, const void *gregs, size_t len)
void trad_frame_set_id(struct trad_frame_cache *this_trad_cache, struct frame_id this_id)
Definition: trad-frame.c:164
static void hppanbsd_iterate_over_regset_sections(struct gdbarch *gdbarch, iterate_over_regset_sections_cb *cb, void *cb_data, const struct regcache *regcache)
static int reg_offset[]
Definition: i386gnu-nat.c:42
static int hppanbsd_reg_offset[]
struct gdbarch_tdep * gdbarch_tdep(struct gdbarch *gdbarch)
Definition: gdbarch.c:1402
Definition: regset.h:34
static void hppanbsd_init_abi(struct gdbarch_info info, struct gdbarch *gdbarch)
void initialize_file_ftype(void)
Definition: defs.h:281
#define gdb_assert(expr)
Definition: gdb_assert.h:33
int regnum
Definition: aarch64-tdep.c:69
void( iterate_over_regset_sections_cb)(const char *sect_name, int size, const struct regset *regset, const char *human_name, void *cb_data)
Definition: gdbarch.h:98
ULONGEST get_frame_register_unsigned(struct frame_info *frame, int regnum)
Definition: frame.c:1194
bfd_byte gdb_byte
Definition: common-types.h:38
initialize_file_ftype _initialize_hppanbsd_tdep
void tramp_frame_prepend_unwinder(struct gdbarch *gdbarch, const struct tramp_frame *tramp_frame)
Definition: tramp-frame.c:145
struct m32c_reg regs[M32C_MAX_NUM_REGS]
Definition: m32c-tdep.c:105
struct m32c_reg * sp
Definition: m32c-tdep.c:114
void regcache_raw_supply(struct regcache *regcache, int regnum, const void *buf)
Definition: regcache.c:1041
void set_gdbarch_iterate_over_regset_sections(struct gdbarch *gdbarch, gdbarch_iterate_over_regset_sections_ftype iterate_over_regset_sections)
Definition: gdbarch.c:3398
static void hppanbsd_sigtramp_cache_init(const struct tramp_frame *, struct frame_info *, struct trad_frame_cache *, CORE_ADDR)
Definition: hppanbsd-tdep.c:99
#define HPPANBSD_SIZEOF_GREGS
static int hppanbsd_mc_reg_offset[]
Definition: hppanbsd-tdep.c:32
void gdbarch_register_osabi(enum bfd_architecture arch, unsigned long machine, enum gdb_osabi osabi, void(*init_osabi)(struct gdbarch_info, struct gdbarch *))
Definition: osabi.c:148
struct gdbarch * get_frame_arch(struct frame_info *this_frame)
Definition: frame.c:2535
const ULONGEST const LONGEST len
Definition: target.h:309