/* Native-dependent code for FreeBSD/arm.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2022 Free Software Foundation, Inc.
This file is part of GDB.
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
+#include "inferior.h"
#include "target.h"
+#include "elf/common.h"
+
#include <sys/types.h>
#include <sys/ptrace.h>
#include <machine/reg.h>
#include "arm-fbsd-tdep.h"
#include "inf-ptrace.h"
-/* Determine if PT_GETREGS fetches REGNUM. */
-
-static bool
-getregs_supplies (struct gdbarch *gdbarch, int regnum)
+struct arm_fbsd_nat_target : public fbsd_nat_target
{
- return ((regnum >= ARM_A1_REGNUM && regnum <= ARM_PC_REGNUM)
- || regnum == ARM_PS_REGNUM);
-}
+ void fetch_registers (struct regcache *, int) override;
+ void store_registers (struct regcache *, int) override;
+ const struct target_desc *read_description () override;
+};
-#ifdef PT_GETVFPREGS
-/* Determine if PT_GETVFPREGS fetches REGNUM. */
-
-static bool
-getvfpregs_supplies (struct gdbarch *gdbarch, int regnum)
-{
- return ((regnum >= ARM_D0_REGNUM && regnum <= ARM_D31_REGNUM)
- || regnum == ARM_FPSCR_REGNUM);
-}
-#endif
+static arm_fbsd_nat_target the_arm_fbsd_nat_target;
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
for all registers. */
-static void
-arm_fbsd_fetch_inferior_registers (struct target_ops *ops,
- struct regcache *regcache, int regnum)
+void
+arm_fbsd_nat_target::fetch_registers (struct regcache *regcache, int regnum)
{
- pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
-
- struct gdbarch *gdbarch = regcache->arch ();
- if (regnum == -1 || getregs_supplies (gdbarch, regnum))
- {
- struct reg regs;
-
- if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
- perror_with_name (_("Couldn't get registers"));
-
- regcache->supply_regset (&arm_fbsd_gregset, regnum, ®s,
- sizeof (regs));
- }
-
+ fetch_register_set<struct reg> (regcache, regnum, PT_GETREGS,
+ &arm_fbsd_gregset);
#ifdef PT_GETVFPREGS
- if (regnum == -1 || getvfpregs_supplies (gdbarch, regnum))
- {
- struct vfpreg vfpregs;
-
- if (ptrace (PT_GETVFPREGS, pid, (PTRACE_TYPE_ARG3) &vfpregs, 0) == -1)
- perror_with_name (_("Couldn't get floating point status"));
+ fetch_register_set<struct vfpreg> (regcache, regnum, PT_GETVFPREGS,
+ &arm_fbsd_vfpregset);
+#endif
+#ifdef PT_GETREGSET
+ gdbarch *gdbarch = regcache->arch ();
+ arm_gdbarch_tdep *tdep = gdbarch_tdep<arm_gdbarch_tdep> (gdbarch);
- regcache->supply_regset (&arm_fbsd_vfpregset, regnum, &vfpregs,
- sizeof (vfpregs));
+ if (tdep->tls_regnum > 0)
+ {
+ const struct regcache_map_entry arm_fbsd_tlsregmap[] =
+ {
+ { 1, tdep->tls_regnum, 4 },
+ { 0 }
+ };
+
+ const struct regset arm_fbsd_tlsregset =
+ {
+ arm_fbsd_tlsregmap,
+ regcache_supply_regset, regcache_collect_regset
+ };
+
+ fetch_regset<uint32_t> (regcache, regnum, NT_ARM_TLS, &arm_fbsd_tlsregset);
}
#endif
}
/* Store register REGNUM back into the inferior. If REGNUM is -1, do
this for all registers. */
-static void
-arm_fbsd_store_inferior_registers (struct target_ops *ops,
- struct regcache *regcache, int regnum)
+void
+arm_fbsd_nat_target::store_registers (struct regcache *regcache, int regnum)
{
- pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
-
- struct gdbarch *gdbarch = regcache->arch ();
- if (regnum == -1 || getregs_supplies (gdbarch, regnum))
- {
- struct reg regs;
-
- if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
- perror_with_name (_("Couldn't get registers"));
-
- regcache->collect_regset (&arm_fbsd_gregset, regnum, ®s,
- sizeof (regs));
-
- if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
- perror_with_name (_("Couldn't write registers"));
- }
-
+ store_register_set<struct reg> (regcache, regnum, PT_GETREGS, PT_SETREGS,
+ &arm_fbsd_gregset);
#ifdef PT_GETVFPREGS
- if (regnum == -1 || getvfpregs_supplies (gdbarch, regnum))
- {
- struct vfpreg vfpregs;
-
- if (ptrace (PT_GETVFPREGS, pid, (PTRACE_TYPE_ARG3) &vfpregs, 0) == -1)
- perror_with_name (_("Couldn't get floating point status"));
-
- regcache->collect_regset (&arm_fbsd_vfpregset, regnum, &vfpregs,
- sizeof (vfpregs));
+ store_register_set<struct vfpreg> (regcache, regnum, PT_GETVFPREGS,
+ PT_SETVFPREGS, &arm_fbsd_vfpregset);
+#endif
+#ifdef PT_GETREGSET
+ gdbarch *gdbarch = regcache->arch ();
+ arm_gdbarch_tdep *tdep = gdbarch_tdep<arm_gdbarch_tdep> (gdbarch);
- if (ptrace (PT_SETVFPREGS, pid, (PTRACE_TYPE_ARG3) &vfpregs, 0) == -1)
- perror_with_name (_("Couldn't write floating point status"));
+ if (tdep->tls_regnum > 0)
+ {
+ const struct regcache_map_entry arm_fbsd_tlsregmap[] =
+ {
+ { 1, tdep->tls_regnum, 4 },
+ { 0 }
+ };
+
+ const struct regset arm_fbsd_tlsregset =
+ {
+ arm_fbsd_tlsregmap,
+ regcache_supply_regset, regcache_collect_regset
+ };
+
+ store_regset<uint32_t> (regcache, regnum, NT_ARM_TLS, &arm_fbsd_tlsregset);
}
#endif
}
/* Implement the to_read_description method. */
-static const struct target_desc *
-arm_fbsd_read_description (struct target_ops *ops)
+const struct target_desc *
+arm_fbsd_nat_target::read_description ()
{
const struct target_desc *desc;
+ bool tls = false;
- desc = arm_fbsd_read_description_auxv (ops);
+#ifdef PT_GETREGSET
+ tls = have_regset (inferior_ptid, NT_ARM_TLS) != 0;
+#endif
+ desc = arm_fbsd_read_description_auxv (this, tls);
if (desc == NULL)
- desc = ops->beneath->to_read_description (ops->beneath);
+ desc = this->beneath ()->read_description ();
return desc;
}
+void _initialize_arm_fbsd_nat ();
void
-_initialize_arm_fbsd_nat (void)
+_initialize_arm_fbsd_nat ()
{
- struct target_ops *t;
-
- t = inf_ptrace_target ();
- t->to_fetch_registers = arm_fbsd_fetch_inferior_registers;
- t->to_store_registers = arm_fbsd_store_inferior_registers;
- t->to_read_description = arm_fbsd_read_description;
- fbsd_nat_add_target (t);
+ add_inf_child_target (&the_arm_fbsd_nat_target);
}
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