1 /* Native-dependent code for PA-RISC HP-UX.
3 Copyright (C) 2004, 2005, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "gdb_assert.h"
27 #include <sys/ptrace.h>
28 #include <sys/utsname.h>
29 #include <machine/save_state.h>
32 #include <sys/ttrace.h>
35 #include "hppa-tdep.h"
36 #include "solib-som.h"
37 #include "inf-ptrace.h"
38 #include "inf-ttrace.h"
40 /* Return the offset of register REGNUM within `struct save_state'.
41 The offset returns depends on the flags in the "flags" register and
42 the register size (32-bit or 64-bit). These are taken from
46 hppa_hpux_save_state_offset (struct regcache *regcache, int regnum)
50 if (regnum == HPPA_FLAGS_REGNUM)
51 return ssoff (ss_flags);
53 if (HPPA_R0_REGNUM < regnum && regnum < HPPA_FP0_REGNUM)
55 struct gdbarch *arch = get_regcache_arch (regcache);
56 size_t size = register_size (arch, HPPA_R1_REGNUM);
59 gdb_assert (size == 4 || size == 8);
61 regcache_cooked_read_unsigned (regcache, HPPA_FLAGS_REGNUM, &flags);
62 if (flags & SS_WIDEREGS)
63 offset = ssoff (ss_wide) + (8 - size) + (regnum - HPPA_R0_REGNUM) * 8;
65 offset = ssoff (ss_narrow) + (regnum - HPPA_R1_REGNUM) * 4;
69 struct gdbarch *arch = get_regcache_arch (regcache);
70 size_t size = register_size (arch, HPPA_FP0_REGNUM);
72 gdb_assert (size == 4 || size == 8);
73 gdb_assert (regnum >= HPPA_FP0_REGNUM);
74 offset = ssoff(ss_fpblock) + (regnum - HPPA_FP0_REGNUM) * size;
77 gdb_assert (offset < sizeof (save_state_t));
81 /* Just in case a future version of PA-RISC HP-UX won't have ptrace(2)
83 #ifndef PTRACE_TYPE_RET
84 #define PTRACE_TYPE_RET void
88 hppa_hpux_fetch_register (struct regcache *regcache, int regnum)
90 struct gdbarch *gdbarch = get_regcache_arch (regcache);
91 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
98 pid = ptid_get_pid (inferior_ptid);
100 /* This isn't really an address, but ptrace thinks of it as one. */
101 addr = hppa_hpux_save_state_offset (regcache, regnum);
102 size = register_size (gdbarch, regnum);
104 gdb_assert (size == 4 || size == 8);
109 lwpid_t lwp = ptid_get_lwp (inferior_ptid);
111 if (ttrace (TT_LWP_RUREGS, pid, lwp, addr, size, (uintptr_t)buf) == -1)
112 error (_("Couldn't read register %s (#%d): %s"),
113 gdbarch_register_name (gdbarch, regnum),
114 regnum, safe_strerror (errno));
120 /* Read the register contents from the inferior a chuck at the time. */
121 for (i = 0; i < size / sizeof (PTRACE_TYPE_RET); i++)
124 buf[i] = ptrace (PT_RUREGS, pid, (PTRACE_TYPE_ARG3) addr, 0, 0);
126 error (_("Couldn't read register %s (#%d): %s"),
127 gdbarch_register_name (gdbarch, regnum),
128 regnum, safe_strerror (errno));
130 addr += sizeof (PTRACE_TYPE_RET);
135 /* Take care with the "flags" register. It's stored as an `int' in
136 `struct save_state', even for 64-bit code. */
137 if (regnum == HPPA_FLAGS_REGNUM && size == 8)
140 flags = extract_unsigned_integer ((gdb_byte *)buf, 4, byte_order);
141 store_unsigned_integer ((gdb_byte *)buf, 8, byte_order, flags);
144 regcache_raw_supply (regcache, regnum, buf);
148 hppa_hpux_fetch_inferior_registers (struct target_ops *ops,
149 struct regcache *regcache, int regnum)
153 regnum < gdbarch_num_regs (get_regcache_arch (regcache));
155 hppa_hpux_fetch_register (regcache, regnum);
157 hppa_hpux_fetch_register (regcache, regnum);
160 /* Store register REGNUM into the inferior. */
163 hppa_hpux_store_register (struct regcache *regcache, int regnum)
165 struct gdbarch *gdbarch = get_regcache_arch (regcache);
166 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
169 PTRACE_TYPE_RET *buf;
172 pid = ptid_get_pid (inferior_ptid);
174 /* This isn't really an address, but ptrace thinks of it as one. */
175 addr = hppa_hpux_save_state_offset (regcache, regnum);
176 size = register_size (gdbarch, regnum);
178 gdb_assert (size == 4 || size == 8);
181 regcache_raw_collect (regcache, regnum, buf);
183 /* Take care with the "flags" register. It's stored as an `int' in
184 `struct save_state', even for 64-bit code. */
185 if (regnum == HPPA_FLAGS_REGNUM && size == 8)
188 flags = extract_unsigned_integer ((gdb_byte *)buf, 8, byte_order);
189 store_unsigned_integer ((gdb_byte *)buf, 4, byte_order, flags);
195 lwpid_t lwp = ptid_get_lwp (inferior_ptid);
197 if (ttrace (TT_LWP_WUREGS, pid, lwp, addr, size, (uintptr_t)buf) == -1)
198 error (_("Couldn't write register %s (#%d): %s"),
199 gdbarch_register_name (gdbarch, regnum),
200 regnum, safe_strerror (errno));
206 /* Write the register contents into the inferior a chunk at the time. */
207 for (i = 0; i < size / sizeof (PTRACE_TYPE_RET); i++)
210 ptrace (PT_WUREGS, pid, (PTRACE_TYPE_ARG3) addr, buf[i], 0);
212 error (_("Couldn't write register %s (#%d): %s"),
213 gdbarch_register_name (gdbarch, regnum),
214 regnum, safe_strerror (errno));
216 addr += sizeof (PTRACE_TYPE_RET);
222 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
223 this for all registers (including the floating point registers). */
226 hppa_hpux_store_inferior_registers (struct target_ops *ops,
227 struct regcache *regcache, int regnum)
231 regnum < gdbarch_num_regs (get_regcache_arch (regcache));
233 hppa_hpux_store_register (regcache, regnum);
235 hppa_hpux_store_register (regcache, regnum);
238 /* Set hpux_major_release variable to the value retrieved from a call to
242 set_hpux_major_release (void)
248 p = strchr (x.release, '.');
250 hpux_major_release = atoi (p + 1);
255 /* Prevent warning from -Wmissing-prototypes. */
256 void _initialize_hppa_hpux_nat (void);
259 _initialize_hppa_hpux_nat (void)
261 struct target_ops *t;
263 set_hpux_major_release ();
266 t = inf_ttrace_target ();
268 t = inf_ptrace_target ();
271 t->to_fetch_registers = hppa_hpux_fetch_inferior_registers;
272 t->to_store_registers = hppa_hpux_store_inferior_registers;