gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gdb / ppc-fbsd-nat.c

diff --git a/gdb/ppc-fbsd-nat.c b/gdb/ppc-fbsd-nat.c
index 823c063643a771cd06dc93db9caf35e2c1576004..a1b268ab28922a45318ab3d9a8ebf7a317f6cb3c 100644 (file)
--- a/gdb/ppc-fbsd-nat.c
+++ b/gdb/ppc-fbsd-nat.c
@@ -1,6 +1,6 @@
 /* Native-dependent code for PowerPC's running FreeBSD, for GDB.
 
-   Copyright (C) 2013-2017 Free Software Foundation, Inc.
+   Copyright (C) 2013-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -37,6 +37,14 @@
 #include "inf-ptrace.h"
 #include "bsd-kvm.h"
 
+struct ppc_fbsd_nat_target final : public fbsd_nat_target
+{
+  void fetch_registers (struct regcache *, int) override;
+  void store_registers (struct regcache *, int) override;
+};
+
+static ppc_fbsd_nat_target the_ppc_fbsd_nat_target;
+
 /* Fill GDB's register array with the general-purpose register values
    in *GREGSETP.  */
 
@@ -115,25 +123,23 @@ getfpregs_supplies (struct gdbarch *gdbarch, int regno)
 /* Fetch register REGNO from the child process. If REGNO is -1, do it
    for all registers.  */
 
-static void
-ppcfbsd_fetch_inferior_registers (struct target_ops *ops,
-                                 struct regcache *regcache, int regno)
+void
+ppc_fbsd_nat_target::fetch_registers (struct regcache *regcache, int regno)
 {
   gdb_gregset_t regs;
+  pid_t pid = regcache->ptid ().lwp ();
 
-  if (ptrace (PT_GETREGS, ptid_get_lwp (inferior_ptid),
-             (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+  if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
     perror_with_name (_("Couldn't get registers"));
 
   supply_gregset (regcache, &regs);
 
-  if (regno == -1 || getfpregs_supplies (get_regcache_arch (regcache), regno))
+  if (regno == -1 || getfpregs_supplies (regcache->arch (), regno))
     {
       const struct regset *fpregset = ppc_fbsd_fpregset ();
       gdb_fpregset_t fpregs;
 
-      if (ptrace (PT_GETFPREGS, ptid_get_lwp (inferior_ptid),
-                 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
        perror_with_name (_("Couldn't get FP registers"));
 
       ppc_supply_fpregset (fpregset, regcache, regno, &fpregs, sizeof fpregs);
@@ -143,34 +149,30 @@ ppcfbsd_fetch_inferior_registers (struct target_ops *ops,
 /* Store register REGNO back into the child process. If REGNO is -1,
    do this for all registers.  */
 
-static void
-ppcfbsd_store_inferior_registers (struct target_ops *ops,
-                                 struct regcache *regcache, int regno)
+void
+ppc_fbsd_nat_target::store_registers (struct regcache *regcache, int regno)
 {
   gdb_gregset_t regs;
+  pid_t pid = regcache->ptid ().lwp ();
 
-  if (ptrace (PT_GETREGS, ptid_get_lwp (inferior_ptid),
-             (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+  if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
     perror_with_name (_("Couldn't get registers"));
 
   fill_gregset (regcache, &regs, regno);
 
-  if (ptrace (PT_SETREGS, ptid_get_lwp (inferior_ptid),
-             (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+  if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
     perror_with_name (_("Couldn't write registers"));
 
-  if (regno == -1 || getfpregs_supplies (get_regcache_arch (regcache), regno))
+  if (regno == -1 || getfpregs_supplies (regcache->arch (), regno))
     {
       gdb_fpregset_t fpregs;
 
-      if (ptrace (PT_GETFPREGS, ptid_get_lwp (inferior_ptid),
-                 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
        perror_with_name (_("Couldn't get FP registers"));
 
       fill_fpregset (regcache, &fpregs, regno);
 
-      if (ptrace (PT_SETFPREGS, ptid_get_lwp (inferior_ptid),
-                 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+      if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
        perror_with_name (_("Couldn't set FP registers"));
     }
 }
@@ -182,7 +184,7 @@ ppcfbsd_store_inferior_registers (struct target_ops *ops,
 static int
 ppcfbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
 {
-  struct gdbarch *gdbarch = get_regcache_arch (regcache);
+  struct gdbarch *gdbarch = regcache->arch ();
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
   int i, regnum;
 
@@ -190,29 +192,20 @@ ppcfbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
   if (pcb->pcb_sp == 0)
     return 0;
 
-  regcache_raw_supply (regcache, gdbarch_sp_regnum (gdbarch), &pcb->pcb_sp);
-  regcache_raw_supply (regcache, tdep->ppc_cr_regnum, &pcb->pcb_cr);
-  regcache_raw_supply (regcache, tdep->ppc_lr_regnum, &pcb->pcb_lr);
+  regcache->raw_supply (gdbarch_sp_regnum (gdbarch), &pcb->pcb_sp);
+  regcache->raw_supply (tdep->ppc_cr_regnum, &pcb->pcb_cr);
+  regcache->raw_supply (tdep->ppc_lr_regnum, &pcb->pcb_lr);
   for (i = 0, regnum = tdep->ppc_gp0_regnum + 14; i < 20; i++, regnum++)
-    regcache_raw_supply (regcache, regnum, &pcb->pcb_context[i]);
+    regcache->raw_supply (regnum, &pcb->pcb_context[i]);
 
   return 1;
 }
 
-/* Provide a prototype to silence -Wmissing-prototypes.  */
-
-void _initialize_ppcfbsd_nat (void);
-
+void _initialize_ppcfbsd_nat ();
 void
-_initialize_ppcfbsd_nat (void)
+_initialize_ppcfbsd_nat ()
 {
-  struct target_ops *t;
-
-  /* Add in local overrides.  */
-  t = inf_ptrace_target ();
-  t->to_fetch_registers = ppcfbsd_fetch_inferior_registers;
-  t->to_store_registers = ppcfbsd_store_inferior_registers;
-  fbsd_nat_add_target (t);
+  add_inf_child_target (&the_ppc_fbsd_nat_target);
 
   /* Support debugging kernel virtual memory images.  */
   bsd_kvm_add_target (ppcfbsd_supply_pcb);