gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gdb / hppa-linux-nat.c

diff --git a/gdb/hppa-linux-nat.c b/gdb/hppa-linux-nat.c
index 0694f6128f28aea8cbfe2e889d37742fbbe66ff2..f352c25a3e63345a5b7f9211e095f72d0b446814 100644 (file)
--- a/gdb/hppa-linux-nat.c
+++ b/gdb/hppa-linux-nat.c
@@ -1,6 +1,6 @@
 /* Functions specific to running GDB native on HPPA running GNU/Linux.
 
-   Copyright (C) 2004-2015 Free Software Foundation, Inc.
+   Copyright (C) 2004-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -23,6 +23,8 @@
 #include "inferior.h"
 #include "target.h"
 #include "linux-nat.h"
+#include "inf-ptrace.h"
+#include "gdbarch.h"
 
 #include <sys/procfs.h>
 #include "nat/gdb_ptrace.h"
@@ -33,6 +35,16 @@
 
 #include "hppa-tdep.h"
 
+class hppa_linux_nat_target final : public linux_nat_target
+{
+public:
+  /* Add our register access methods.  */
+  void fetch_registers (struct regcache *, int) override;
+  void store_registers (struct regcache *, int) override;
+};
+
+static hppa_linux_nat_target the_hppa_linux_nat_target;
+
 /* Prototypes for supply_gregset etc.  */
 #include "gregset.h"
 
@@ -212,20 +224,17 @@ static const int greg_map[] =
 static void
 fetch_register (struct regcache *regcache, int regno)
 {
-  struct gdbarch *gdbarch = get_regcache_arch (regcache);
-  int tid;
+  struct gdbarch *gdbarch = regcache->arch ();
+  pid_t tid;
   int val;
 
   if (gdbarch_cannot_fetch_register (gdbarch, regno))
     {
-      regcache_raw_supply (regcache, regno, NULL);
+      regcache->raw_supply (regno, NULL);
       return;
     }
 
-  /* GNU/Linux LWP ID's are process ID's.  */
-  tid = ptid_get_lwp (inferior_ptid);
-  if (tid == 0)
-    tid = ptid_get_pid (inferior_ptid); /* Not a threaded program.  */
+  tid = get_ptrace_pid (regcache->ptid ());
 
   errno = 0;
   val = ptrace (PTRACE_PEEKUSER, tid, hppa_linux_register_addr (regno, 0), 0);
@@ -234,7 +243,7 @@ fetch_register (struct regcache *regcache, int regno)
           gdbarch_register_name (gdbarch, regno),
           regno, safe_strerror (errno));
 
-  regcache_raw_supply (regcache, regno, &val);
+  regcache->raw_supply (regno, &val);
 }
 
 /* Store one register.  */
@@ -242,20 +251,17 @@ fetch_register (struct regcache *regcache, int regno)
 static void
 store_register (const struct regcache *regcache, int regno)
 {
-  struct gdbarch *gdbarch = get_regcache_arch (regcache);
-  int tid;
+  struct gdbarch *gdbarch = regcache->arch ();
+  pid_t tid;
   int val;
 
   if (gdbarch_cannot_store_register (gdbarch, regno))
     return;
 
-  /* GNU/Linux LWP ID's are process ID's.  */
-  tid = ptid_get_lwp (inferior_ptid);
-  if (tid == 0)
-    tid = ptid_get_pid (inferior_ptid); /* Not a threaded program.  */
+  tid = get_ptrace_pid (regcache->ptid ());
 
   errno = 0;
-  regcache_raw_collect (regcache, regno, &val);
+  regcache->raw_collect (regno, &val);
   ptrace (PTRACE_POKEUSER, tid, hppa_linux_register_addr (regno, 0), val);
   if (errno != 0)
     error (_("Couldn't write register %s (#%d): %s."),
@@ -267,14 +273,13 @@ store_register (const struct regcache *regcache, int regno)
    regno == -1, otherwise fetch all general registers or all floating
    point registers depending upon the value of regno.  */
 
-static void
-hppa_linux_fetch_inferior_registers (struct target_ops *ops,
-                                    struct regcache *regcache, int regno)
+void
+hppa_linux_nat_target::fetch_registers (struct regcache *regcache, int regno)
 {
   if (-1 == regno)
     {
       for (regno = 0;
-          regno < gdbarch_num_regs (get_regcache_arch (regcache));
+          regno < gdbarch_num_regs (regcache->arch ());
           regno++)
         fetch_register (regcache, regno);
     }
@@ -288,14 +293,13 @@ hppa_linux_fetch_inferior_registers (struct target_ops *ops,
    regno == -1, otherwise store all general registers or all floating
    point registers depending upon the value of regno.  */
 
-static void
-hppa_linux_store_inferior_registers (struct target_ops *ops,
-                                    struct regcache *regcache, int regno)
+void
+hppa_linux_nat_target::store_registers (struct regcache *regcache, int regno)
 {
   if (-1 == regno)
     {
       for (regno = 0;
-          regno < gdbarch_num_regs (get_regcache_arch (regcache));
+          regno < gdbarch_num_regs (regcache->arch ());
           regno++)
        store_register (regcache, regno);
     }
@@ -317,7 +321,7 @@ supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
   for (i = 0; i < sizeof (greg_map) / sizeof (greg_map[0]); i++, regp++)
     {
       int regno = greg_map[i];
-      regcache_raw_supply (regcache, regno, regp);
+      regcache->raw_supply (regno, regp);
     }
 }
 
@@ -336,9 +340,7 @@ fill_gregset (const struct regcache *regcache,
       int mregno = greg_map[i];
 
       if (regno == -1 || regno == mregno)
-       {
-          regcache_raw_collect(regcache, mregno, &(*gregsetp)[i]);
-       }
+       regcache->raw_collect (mregno, &(*gregsetp)[i]);
     }
 }
 
@@ -355,8 +357,8 @@ supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
   for (regi = 0; regi <= 31; regi++)
     {
       from = (const char *) &((*fpregsetp)[regi]);
-      regcache_raw_supply (regcache, 2*regi + HPPA_FP0_REGNUM, from);
-      regcache_raw_supply (regcache, 2*regi + HPPA_FP0_REGNUM + 1, from + 4);
+      regcache->raw_supply (2*regi + HPPA_FP0_REGNUM, from);
+      regcache->raw_supply (2*regi + HPPA_FP0_REGNUM + 1, from + 4);
     }
 }
 
@@ -378,24 +380,15 @@ fill_fpregset (const struct regcache *regcache,
       char *to = (char *) &((*fpregsetp)[(i - HPPA_FP0_REGNUM) / 2]);
       if ((i - HPPA_FP0_REGNUM) & 1)
        to += 4;
-      regcache_raw_collect (regcache, i, to);
+      regcache->raw_collect (i, to);
    }
 }
 
-void _initialize_hppa_linux_nat (void);
-
+void _initialize_hppa_linux_nat ();
 void
-_initialize_hppa_linux_nat (void)
+_initialize_hppa_linux_nat ()
 {
-  struct target_ops *t;
-
-  /* Fill in the generic GNU/Linux methods.  */
-  t = linux_target ();
-
-  /* Add our register access methods.  */
-  t->to_fetch_registers = hppa_linux_fetch_inferior_registers;
-  t->to_store_registers = hppa_linux_store_inferior_registers;
-
   /* Register the target.  */
-  linux_nat_add_target (t);
+  linux_target = &the_hppa_linux_nat_target;
+  add_inf_child_target (&the_hppa_linux_nat_target);
 }