gdb: add target_ops::supports_displaced_step

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

diff --git a/gdb/alpha-linux-nat.c b/gdb/alpha-linux-nat.c
index 3b020ba151f611541fa8b8fffc6dc3be4c7cb553..5fd7a932ce134d688ef8bd8b5a0aae810b839162 100644 (file)
--- a/gdb/alpha-linux-nat.c
+++ b/gdb/alpha-linux-nat.c
@@ -1,11 +1,11 @@
 /* Low level Alpha GNU/Linux interface, for GDB when running native.
-   Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2005-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -14,18 +14,17 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
 #include "target.h"
 #include "regcache.h"
-#include "linux-nat.h"
+#include "linux-nat-trad.h"
 
 #include "alpha-tdep.h"
+#include "gdbarch.h"
 
-#include <sys/ptrace.h>
+#include "nat/gdb_ptrace.h"
 #include <alpha/ptrace.h>
 
 #include <sys/procfs.h>
@@ -34,70 +33,78 @@
 /* The address of UNIQUE for ptrace.  */
 #define ALPHA_UNIQUE_PTRACE_ADDR 65
 
+class alpha_linux_nat_target final : public linux_nat_trad_target
+{
+protected:
+  /* Override linux_nat_trad_target methods.  */
+  CORE_ADDR register_u_offset (struct gdbarch *gdbarch,
+                              int regno, int store_p) override;
+};
+
+static alpha_linux_nat_target the_alpha_linux_nat_target;
 
-/*
- * See the comment in m68k-tdep.c regarding the utility of these functions.
- */
+/* See the comment in m68k-tdep.c regarding the utility of these
+   functions.  */
 
 void
-supply_gregset (gdb_gregset_t *gregsetp)
+supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
 {
-  long *regp = (long *)gregsetp;
+  const long *regp = (const long *)gregsetp;
 
   /* PC is in slot 32, UNIQUE is in slot 33.  */
-  alpha_supply_int_regs (current_regcache, -1, regp, regp + 31, regp + 32);
+  alpha_supply_int_regs (regcache, -1, regp, regp + 31, regp + 32);
 }
 
 void
-fill_gregset (gdb_gregset_t *gregsetp, int regno)
+fill_gregset (const struct regcache *regcache,
+             gdb_gregset_t *gregsetp, int regno)
 {
   long *regp = (long *)gregsetp;
 
   /* PC is in slot 32, UNIQUE is in slot 33.  */
-  alpha_fill_int_regs (current_regcache, regno, regp, regp + 31, regp + 32);
+  alpha_fill_int_regs (regcache, regno, regp, regp + 31, regp + 32);
 }
 
-/*
- * Now we do the same thing for floating-point registers.
- * Again, see the comments in m68k-tdep.c.
- */
+/* Now we do the same thing for floating-point registers.
+   Again, see the comments in m68k-tdep.c.  */
 
 void
-supply_fpregset (gdb_fpregset_t *fpregsetp)
+supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
 {
-  long *regp = (long *)fpregsetp;
+  const long *regp = (const long *)fpregsetp;
 
   /* FPCR is in slot 32.  */
-  alpha_supply_fp_regs (current_regcache, -1, regp, regp + 31);
+  alpha_supply_fp_regs (regcache, -1, regp, regp + 31);
 }
 
 void
-fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
+fill_fpregset (const struct regcache *regcache,
+              gdb_fpregset_t *fpregsetp, int regno)
 {
   long *regp = (long *)fpregsetp;
 
   /* FPCR is in slot 32.  */
-  alpha_fill_fp_regs (current_regcache, regno, regp, regp + 31);
+  alpha_fill_fp_regs (regcache, regno, regp, regp + 31);
 }
 
-
-static CORE_ADDR
-alpha_linux_register_u_offset (int regno)
+CORE_ADDR
+alpha_linux_nat_target::register_u_offset (struct gdbarch *gdbarch,
+                                          int regno, int store_p)
 {
-  if (regno == PC_REGNUM)
+  if (regno == gdbarch_pc_regnum (gdbarch))
     return PC;
   if (regno == ALPHA_UNIQUE_REGNUM)
     return ALPHA_UNIQUE_PTRACE_ADDR;
-  if (regno < FP0_REGNUM)
+  if (regno < gdbarch_fp0_regnum (gdbarch))
     return GPR_BASE + regno;
   else
-    return FPR_BASE + regno - FP0_REGNUM;
+    return FPR_BASE + regno - gdbarch_fp0_regnum (gdbarch);
 }
 
-void _initialialize_alpha_linux_nat (void);
-
+void _initialize_alpha_linux_nat ();
 void
-_initialize_alpha_linux_nat (void)
+_initialize_alpha_linux_nat ()
 {
-  linux_nat_add_target (linux_trad_target (alpha_linux_register_u_offset));
+  linux_target = &the_alpha_linux_nat_target;
+  add_inf_child_target (&the_alpha_linux_nat_target);
 }