X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Falphabsd-nat.c;h=8e6942fd9ca5355711b3cc3256ab0650391ab750;hb=1da77581c0559e62b80b27f06f81dad4c7a7a0be;hp=b26d3ea7c48323b5242ffffedf326ca67674047a;hpb=12bcb0fe6dec61c540012f469c4cb0a56d6b6ea4;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/alphabsd-nat.c b/gdb/alphabsd-nat.c
index b26d3ea7c4..8e6942fd9c 100644
--- a/gdb/alphabsd-nat.c
+++ b/gdb/alphabsd-nat.c
@@ -1,11 +1,12 @@
 /* Native-dependent code for Alpha BSD's.
-   Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
+
+   Copyright (C) 2000-2013 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,
@@ -14,9 +15,7 @@
    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., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
 #include "inferior.h"
@@ -24,6 +23,7 @@
 
 #include "alpha-tdep.h"
 #include "alphabsd-tdep.h"
+#include "inf-ptrace.h"
 
 #include <sys/types.h>
 #include <sys/ptrace.h>
@@ -47,27 +47,28 @@ typedef struct fpreg fpregset_t;
    supply/fill routines.  */
 
 void
-supply_gregset (gregset_t *gregsetp)
+supply_gregset (struct regcache *regcache, const gregset_t *gregsetp)
 {
-  alphabsd_supply_reg ((char *) gregsetp, -1);
+  alphabsd_supply_reg (regcache, (const char *) gregsetp, -1);
 }
 
 void
-fill_gregset (gregset_t *gregsetp, int regno)
+fill_gregset (const struct regcache *regcache, gregset_t *gregsetp, int regno)
 {
-  alphabsd_fill_reg ((char *) gregsetp, regno);
+  alphabsd_fill_reg (regcache, (char *) gregsetp, regno);
 }
 
 void
-supply_fpregset (fpregset_t *fpregsetp)
+supply_fpregset (struct regcache *regcache, const fpregset_t *fpregsetp)
 {
-  alphabsd_supply_fpreg ((char *) fpregsetp, -1);
+  alphabsd_supply_fpreg (regcache, (const char *) fpregsetp, -1);
 }
 
 void
-fill_fpregset (fpregset_t *fpregsetp, int regno)
+fill_fpregset (const struct regcache *regcache,
+	       fpregset_t *fpregsetp, int regno)
 {
-  alphabsd_fill_fpreg ((char *) fpregsetp, regno);
+  alphabsd_fill_fpreg (regcache, (char *) fpregsetp, regno);
 }
 
 /* Determine if PT_GETREGS fetches this register.  */
@@ -75,83 +76,131 @@ fill_fpregset (fpregset_t *fpregsetp, int regno)
 static int
 getregs_supplies (int regno)
 {
-
   return ((regno >= ALPHA_V0_REGNUM && regno <= ALPHA_ZERO_REGNUM)
-	  || regno >= PC_REGNUM);
+	  || regno >= ALPHA_PC_REGNUM);
 }
 
-
 /* Fetch register REGNO from the inferior.  If REGNO is -1, do this
    for all registers (including the floating point registers).  */
 
-void
-fetch_inferior_registers (int regno)
+static void
+alphabsd_fetch_inferior_registers (struct target_ops *ops,
+				   struct regcache *regcache, int regno)
 {
-
   if (regno == -1 || getregs_supplies (regno))
     {
       struct reg gregs;
 
-      if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
-		  (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
-	perror_with_name ("Couldn't get registers");
+      if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
+		  (PTRACE_TYPE_ARG3) &gregs, 0) == -1)
+	perror_with_name (_("Couldn't get registers"));
 
-      alphabsd_supply_reg ((char *) &gregs, regno);
+      alphabsd_supply_reg (regcache, (char *) &gregs, regno);
       if (regno != -1)
 	return;
     }
 
-  if (regno == -1 || regno >= FP0_REGNUM)
+  if (regno == -1
+      || regno >= gdbarch_fp0_regnum (get_regcache_arch (regcache)))
     {
       struct fpreg fpregs;
 
-      if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
-		  (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
-	perror_with_name ("Couldn't get floating point status");
+      if (ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
+		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+	perror_with_name (_("Couldn't get floating point status"));
 
-      alphabsd_supply_fpreg ((char *) &fpregs, regno);
+      alphabsd_supply_fpreg (regcache, (char *) &fpregs, regno);
     }
-
-  /* Reset virtual frame pointer.  */
-  supply_register (FP_REGNUM, NULL);
 }
 
 /* Store register REGNO back into the inferior.  If REGNO is -1, do
    this for all registers (including the floating point registers).  */
 
-void
-store_inferior_registers (int regno)
+static void
+alphabsd_store_inferior_registers (struct target_ops *ops,
+				   struct regcache *regcache, int regno)
 {
-
   if (regno == -1 || getregs_supplies (regno))
     {
       struct reg gregs;
-      if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
-                  (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
-        perror_with_name ("Couldn't get registers");
+      if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
+                  (PTRACE_TYPE_ARG3) &gregs, 0) == -1)
+        perror_with_name (_("Couldn't get registers"));
 
-      alphabsd_fill_reg ((char *) &gregs, regno);
+      alphabsd_fill_reg (regcache, (char *) &gregs, regno);
 
-      if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
-                  (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
-        perror_with_name ("Couldn't write registers");
+      if (ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid),
+                  (PTRACE_TYPE_ARG3) &gregs, 0) == -1)
+        perror_with_name (_("Couldn't write registers"));
 
       if (regno != -1)
 	return;
     }
 
-  if (regno == -1 || regno >= FP0_REGNUM)
+  if (regno == -1
+      || regno >= gdbarch_fp0_regnum (get_regcache_arch (regcache)))
     {
       struct fpreg fpregs;
 
-      if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
-		  (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
-	perror_with_name ("Couldn't get floating point status");
+      if (ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
+		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+	perror_with_name (_("Couldn't get floating point status"));
 
-      alphabsd_fill_fpreg ((char *) &fpregs, regno);
+      alphabsd_fill_fpreg (regcache, (char *) &fpregs, regno);
 
-      if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
-		  (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
-	perror_with_name ("Couldn't write floating point status");
+      if (ptrace (PT_SETFPREGS, ptid_get_pid (inferior_ptid),
+		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+	perror_with_name (_("Couldn't write floating point status"));
     }
 }
+
+
+/* Support for debugging kernel virtual memory images.  */
+
+#include <sys/types.h>
+#include <sys/signal.h>
+#include <machine/pcb.h>
+
+#include "bsd-kvm.h"
+
+static int
+alphabsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
+{
+  int regnum;
+
+  /* The following is true for OpenBSD 3.9:
+
+     The pcb contains the register state at the context switch inside
+     cpu_switch().  */
+
+  /* The stack pointer shouldn't be zero.  */
+  if (pcb->pcb_hw.apcb_ksp == 0)
+    return 0;
+
+  regcache_raw_supply (regcache, ALPHA_SP_REGNUM, &pcb->pcb_hw.apcb_ksp);
+
+  for (regnum = ALPHA_S0_REGNUM; regnum < ALPHA_A0_REGNUM; regnum++)
+    regcache_raw_supply (regcache, regnum,
+			 &pcb->pcb_context[regnum - ALPHA_S0_REGNUM]);
+  regcache_raw_supply (regcache, ALPHA_RA_REGNUM, &pcb->pcb_context[7]);
+
+  return 1;
+}
+
+
+/* Provide a prototype to silence -Wmissing-prototypes.  */
+void _initialize_alphabsd_nat (void);
+
+void
+_initialize_alphabsd_nat (void)
+{
+  struct target_ops *t;
+
+  t = inf_ptrace_target ();
+  t->to_fetch_registers = alphabsd_fetch_inferior_registers;
+  t->to_store_registers = alphabsd_store_inferior_registers;
+  add_target (t);
+
+  /* Support debugging kernel virtual memory images.  */
+  bsd_kvm_add_target (alphabsd_supply_pcb);
+}