1 /* Native-dependent code for BSD Unix running on ARM's, for GDB.
3 Copyright (C) 1988-2019 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 <sys/types.h>
26 #include <sys/ptrace.h>
27 #include <machine/reg.h>
28 #include <machine/frame.h>
31 #include "inf-ptrace.h"
33 class arm_netbsd_nat_target final : public inf_ptrace_target
36 /* Add our register access methods. */
37 void fetch_registers (struct regcache *, int) override;
38 void store_registers (struct regcache *, int) override;
41 static arm_netbsd_nat_target the_arm_netbsd_nat_target;
43 extern int arm_apcs_32;
46 arm_supply_gregset (struct regcache *regcache, struct reg *gregset)
51 /* Integer registers. */
52 for (regno = ARM_A1_REGNUM; regno < ARM_SP_REGNUM; regno++)
53 regcache->raw_supply (regno, (char *) &gregset->r[regno]);
55 regcache->raw_supply (ARM_SP_REGNUM, (char *) &gregset->r_sp);
56 regcache->raw_supply (ARM_LR_REGNUM, (char *) &gregset->r_lr);
57 /* This is ok: we're running native... */
58 r_pc = gdbarch_addr_bits_remove (regcache->arch (), gregset->r_pc);
59 regcache->raw_supply (ARM_PC_REGNUM, (char *) &r_pc);
62 regcache->raw_supply (ARM_PS_REGNUM, (char *) &gregset->r_cpsr);
64 regcache->raw_supply (ARM_PS_REGNUM, (char *) &gregset->r_pc);
68 arm_supply_fparegset (struct regcache *regcache, struct fpreg *fparegset)
72 for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
73 regcache->raw_supply (regno,
74 (char *) &fparegset->fpr[regno - ARM_F0_REGNUM]);
76 regcache->raw_supply (ARM_FPS_REGNUM, (char *) &fparegset->fpr_fpsr);
80 fetch_register (struct regcache *regcache, int regno)
82 struct reg inferior_registers;
85 ret = ptrace (PT_GETREGS, regcache->ptid ().pid (),
86 (PTRACE_TYPE_ARG3) &inferior_registers, 0);
90 warning (_("unable to fetch general register"));
97 regcache->raw_supply (ARM_SP_REGNUM, (char *) &inferior_registers.r_sp);
101 regcache->raw_supply (ARM_LR_REGNUM, (char *) &inferior_registers.r_lr);
105 /* This is ok: we're running native... */
106 inferior_registers.r_pc = gdbarch_addr_bits_remove
108 inferior_registers.r_pc);
109 regcache->raw_supply (ARM_PC_REGNUM, (char *) &inferior_registers.r_pc);
114 regcache->raw_supply (ARM_PS_REGNUM,
115 (char *) &inferior_registers.r_cpsr);
117 regcache->raw_supply (ARM_PS_REGNUM,
118 (char *) &inferior_registers.r_pc);
122 regcache->raw_supply (regno, (char *) &inferior_registers.r[regno]);
128 fetch_regs (struct regcache *regcache)
130 struct reg inferior_registers;
134 ret = ptrace (PT_GETREGS, regcache->ptid ().pid (),
135 (PTRACE_TYPE_ARG3) &inferior_registers, 0);
139 warning (_("unable to fetch general registers"));
143 arm_supply_gregset (regcache, &inferior_registers);
147 fetch_fp_register (struct regcache *regcache, int regno)
149 struct fpreg inferior_fp_registers;
152 ret = ptrace (PT_GETFPREGS, regcache->ptid ().pid (),
153 (PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);
157 warning (_("unable to fetch floating-point register"));
164 regcache->raw_supply (ARM_FPS_REGNUM,
165 (char *) &inferior_fp_registers.fpr_fpsr);
170 (regno, (char *) &inferior_fp_registers.fpr[regno - ARM_F0_REGNUM]);
176 fetch_fp_regs (struct regcache *regcache)
178 struct fpreg inferior_fp_registers;
182 ret = ptrace (PT_GETFPREGS, regcache->ptid ().pid (),
183 (PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);
187 warning (_("unable to fetch general registers"));
191 arm_supply_fparegset (regcache, &inferior_fp_registers);
195 arm_nbsd_nat_target::fetch_registers (struct regcache *regcache, int regno)
199 if (regno < ARM_F0_REGNUM || regno > ARM_FPS_REGNUM)
200 fetch_register (regcache, regno);
202 fetch_fp_register (regcache, regno);
206 fetch_regs (regcache);
207 fetch_fp_regs (regcache);
213 store_register (const struct regcache *regcache, int regno)
215 struct gdbarch *gdbarch = regcache->arch ();
216 struct reg inferior_registers;
219 ret = ptrace (PT_GETREGS, regcache->ptid ().pid (),
220 (PTRACE_TYPE_ARG3) &inferior_registers, 0);
224 warning (_("unable to fetch general registers"));
231 regcache->raw_collect (ARM_SP_REGNUM, (char *) &inferior_registers.r_sp);
235 regcache->raw_collect (ARM_LR_REGNUM, (char *) &inferior_registers.r_lr);
240 regcache->raw_collect (ARM_PC_REGNUM,
241 (char *) &inferior_registers.r_pc);
246 regcache->raw_collect (ARM_PC_REGNUM, (char *) &pc_val);
248 pc_val = gdbarch_addr_bits_remove (gdbarch, pc_val);
249 inferior_registers.r_pc ^= gdbarch_addr_bits_remove
250 (gdbarch, inferior_registers.r_pc);
251 inferior_registers.r_pc |= pc_val;
257 regcache->raw_collect (ARM_PS_REGNUM,
258 (char *) &inferior_registers.r_cpsr);
263 regcache->raw_collect (ARM_PS_REGNUM, (char *) &psr_val);
265 psr_val ^= gdbarch_addr_bits_remove (gdbarch, psr_val);
266 inferior_registers.r_pc = gdbarch_addr_bits_remove
267 (gdbarch, inferior_registers.r_pc);
268 inferior_registers.r_pc |= psr_val;
273 regcache->raw_collect (regno, (char *) &inferior_registers.r[regno]);
277 ret = ptrace (PT_SETREGS, regcache->ptid ().pid (),
278 (PTRACE_TYPE_ARG3) &inferior_registers, 0);
281 warning (_("unable to write register %d to inferior"), regno);
285 store_regs (const struct regcache *regcache)
287 struct gdbarch *gdbarch = regcache->arch ();
288 struct reg inferior_registers;
293 for (regno = ARM_A1_REGNUM; regno < ARM_SP_REGNUM; regno++)
294 regcache->raw_collect (regno, (char *) &inferior_registers.r[regno]);
296 regcache->raw_collect (ARM_SP_REGNUM, (char *) &inferior_registers.r_sp);
297 regcache->raw_collect (ARM_LR_REGNUM, (char *) &inferior_registers.r_lr);
301 regcache->raw_collect (ARM_PC_REGNUM, (char *) &inferior_registers.r_pc);
302 regcache->raw_collect (ARM_PS_REGNUM,
303 (char *) &inferior_registers.r_cpsr);
310 regcache->raw_collect (ARM_PC_REGNUM, (char *) &pc_val);
311 regcache->raw_collect (ARM_PS_REGNUM, (char *) &psr_val);
313 pc_val = gdbarch_addr_bits_remove (gdbarch, pc_val);
314 psr_val ^= gdbarch_addr_bits_remove (gdbarch, psr_val);
316 inferior_registers.r_pc = pc_val | psr_val;
319 ret = ptrace (PT_SETREGS, regcache->ptid ().pid (),
320 (PTRACE_TYPE_ARG3) &inferior_registers, 0);
323 warning (_("unable to store general registers"));
327 store_fp_register (const struct regcache *regcache, int regno)
329 struct fpreg inferior_fp_registers;
332 ret = ptrace (PT_GETFPREGS, regcache->ptid ().pid (),
333 (PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);
337 warning (_("unable to fetch floating-point registers"));
344 regcache->raw_collect (ARM_FPS_REGNUM,
345 (char *) &inferior_fp_registers.fpr_fpsr);
349 regcache->raw_collect
350 (regno, (char *) &inferior_fp_registers.fpr[regno - ARM_F0_REGNUM]);
354 ret = ptrace (PT_SETFPREGS, regcache->ptid ().pid (),
355 (PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);
358 warning (_("unable to write register %d to inferior"), regno);
362 store_fp_regs (const struct regcache *regcache)
364 struct fpreg inferior_fp_registers;
369 for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
370 regcache->raw_collect
371 (regno, (char *) &inferior_fp_registers.fpr[regno - ARM_F0_REGNUM]);
373 regcache->raw_collect (ARM_FPS_REGNUM,
374 (char *) &inferior_fp_registers.fpr_fpsr);
376 ret = ptrace (PT_SETFPREGS, regcache->ptid ().pid (),
377 (PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);
380 warning (_("unable to store floating-point registers"));
384 arm_nbsd_nat_target::store_registers (struct regcache *regcache, int regno)
388 if (regno < ARM_F0_REGNUM || regno > ARM_FPS_REGNUM)
389 store_register (regcache, regno);
391 store_fp_register (regcache, regno);
395 store_regs (regcache);
396 store_fp_regs (regcache);
401 fetch_elfcore_registers (struct regcache *regcache,
402 char *core_reg_sect, unsigned core_reg_size,
403 int which, CORE_ADDR ignore)
406 struct fpreg fparegset;
410 case 0: /* Integer registers. */
411 if (core_reg_size != sizeof (struct reg))
412 warning (_("wrong size of register set in core file"));
415 /* The memcpy may be unnecessary, but we can't really be sure
416 of the alignment of the data in the core file. */
417 memcpy (&gregset, core_reg_sect, sizeof (gregset));
418 arm_supply_gregset (regcache, &gregset);
423 if (core_reg_size != sizeof (struct fpreg))
424 warning (_("wrong size of FPA register set in core file"));
427 /* The memcpy may be unnecessary, but we can't really be sure
428 of the alignment of the data in the core file. */
429 memcpy (&fparegset, core_reg_sect, sizeof (fparegset));
430 arm_supply_fparegset (regcache, &fparegset);
435 /* Don't know what kind of register request this is; just ignore it. */
440 static struct core_fns arm_netbsd_elfcore_fns =
442 bfd_target_elf_flavour, /* core_flovour. */
443 default_check_format, /* check_format. */
444 default_core_sniffer, /* core_sniffer. */
445 fetch_elfcore_registers, /* core_read_registers. */
450 _initialize_arm_netbsd_nat (void)
452 add_inf_child_target (&the_arm_netbsd_nat_target);
454 deprecated_add_core_fns (&arm_netbsd_elfcore_fns);