* MAINTAINERS: Add Paul Brook and Mark Mitchell as ARM (Symbian)

[binutils-gdb.git] / gdb / vaxbsd-nat.c

diff --git a/gdb/vaxbsd-nat.c b/gdb/vaxbsd-nat.c
index d2757c56c8f05291221e1530d495637ccf9fb22c..bd505be766e1c18871e755f1da8191e08bce410c 100644 (file)
--- a/gdb/vaxbsd-nat.c
+++ b/gdb/vaxbsd-nat.c
@@ -1,4 +1,4 @@
-/* Native-dependent code for VAX BSD's.
+/* Native-dependent code for modern VAX BSD's.
 
    Copyright 2004 Free Software Foundation, Inc.
 
@@ -22,12 +22,14 @@
 #include "defs.h"
 #include "inferior.h"
 #include "regcache.h"
+#include "target.h"
 
 #include <sys/types.h>
 #include <sys/ptrace.h>
 #include <machine/reg.h>
 
 #include "vax-tdep.h"
+#include "inf-ptrace.h"
 
 /* Supply the general-purpose registers stored in GREGS to REGCACHE.  */
 
@@ -62,13 +64,13 @@ vaxbsd_collect_gregset (const struct regcache *regcache,
 /* Fetch register REGNUM from the inferior.  If REGNUM is -1, do this
    for all registers.  */
 
-void
-fetch_inferior_registers (int regnum)
+static void
+vaxbsd_fetch_inferior_registers (int regnum)
 {
   struct reg regs;
 
   if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
-             (PTRACE_ARG3_TYPE) &regs, 0) == -1)
+             (PTRACE_TYPE_ARG3) &regs, 0) == -1)
     perror_with_name ("Couldn't get registers");
 
   vaxbsd_supply_gregset (current_regcache, &regs);
@@ -77,18 +79,69 @@ fetch_inferior_registers (int regnum)
 /* Store register REGNUM back into the inferior.  If REGNUM is -1, do
    this for all registers.  */
 
-void
-store_inferior_registers (int regnum)
+static void
+vaxbsd_store_inferior_registers (int regnum)
 {
   struct reg regs;
 
   if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
-             (PTRACE_ARG3_TYPE) &regs, 0) == -1)
+             (PTRACE_TYPE_ARG3) &regs, 0) == -1)
     perror_with_name ("Couldn't get registers");
 
   vaxbsd_collect_gregset (current_regcache, &regs, regnum);
 
   if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
-             (PTRACE_ARG3_TYPE) &regs, 0) == -1)
+             (PTRACE_TYPE_ARG3) &regs, 0) == -1)
     perror_with_name ("Couldn't write registers");
 }
+\f
+
+/* Support for debugging kernel virtual memory images.  */
+
+#include <sys/types.h>
+#include <machine/pcb.h>
+
+#include "bsd-kvm.h"
+
+static int
+vaxbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
+{
+  int regnum;
+
+  /* The following is true for OpenBSD 3.5:
+
+     The pcb contains the register state at the context switch inside
+     cpu_switch().  */
+
+  /* The stack pointer shouldn't be zero.  */
+  if (pcb->KSP == 0)
+    return 0;
+
+  for (regnum = VAX_R0_REGNUM; regnum < VAX_AP_REGNUM; regnum++)
+    regcache_raw_supply (regcache, regnum, &pcb->R[regnum - VAX_R0_REGNUM]);
+  regcache_raw_supply (regcache, VAX_AP_REGNUM, &pcb->AP);
+  regcache_raw_supply (regcache, VAX_FP_REGNUM, &pcb->FP);
+  regcache_raw_supply (regcache, VAX_SP_REGNUM, &pcb->KSP);
+  regcache_raw_supply (regcache, VAX_PC_REGNUM, &pcb->PC);
+  regcache_raw_supply (regcache, VAX_PS_REGNUM, &pcb->PSL);
+
+  return 1;
+}
+\f
+
+/* Provide a prototype to silence -Wmissing-prototypes.  */
+void _initialize_vaxbsd_nat (void);
+
+void
+_initialize_vaxbsd_nat (void)
+{
+  struct target_ops *t;
+
+  t = inf_ptrace_target ();
+  t->to_fetch_registers = vaxbsd_fetch_inferior_registers;
+  t->to_store_registers = vaxbsd_store_inferior_registers;
+  add_target (t);
+
+  /* Support debugging kernel virtual memory images.  */
+  bsd_kvm_add_target (vaxbsd_supply_pcb);
+}