gdb/

[deliverable/binutils-gdb.git] / gdb / i386-linux-nat.c

diff --git a/gdb/i386-linux-nat.c b/gdb/i386-linux-nat.c
index 2447ecb76a2cfddc60ab1e3e1fa94c6391545aab..991b27fdd8ade3dfaab9fef61285734f01a8414e 100644 (file)
--- a/gdb/i386-linux-nat.c
+++ b/gdb/i386-linux-nat.c
@@ -1,7 +1,7 @@
 /* Native-dependent code for GNU/Linux i386.
 
-   Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
-   Free Software Foundation, Inc.
+   Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+   2009 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -19,6 +19,7 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
+#include "i386-nat.h"
 #include "inferior.h"
 #include "gdbcore.h"
 #include "regcache.h"
@@ -161,7 +162,7 @@ fetch_register (struct regcache *regcache, int regno)
   val = ptrace (PTRACE_PEEKUSER, tid, 4 * regmap[regno], 0);
   if (errno != 0)
     error (_("Couldn't read register %s (#%d): %s."), 
-          gdbarch_register_name (current_gdbarch, regno),
+          gdbarch_register_name (get_regcache_arch (regcache), regno),
           regno, safe_strerror (errno));
 
   regcache_raw_supply (regcache, regno, &val);
@@ -189,7 +190,7 @@ store_register (const struct regcache *regcache, int regno)
   ptrace (PTRACE_POKEUSER, tid, 4 * regmap[regno], val);
   if (errno != 0)
     error (_("Couldn't write register %s (#%d): %s."),
-          gdbarch_register_name (current_gdbarch, regno),
+          gdbarch_register_name (get_regcache_arch (regcache), regno),
           regno, safe_strerror (errno));
 }
 \f
@@ -209,7 +210,8 @@ supply_gregset (struct regcache *regcache, const elf_gregset_t *gregsetp)
   for (i = 0; i < I386_NUM_GREGS; i++)
     regcache_raw_supply (regcache, i, regp + regmap[i]);
 
-  if (I386_LINUX_ORIG_EAX_REGNUM < gdbarch_num_regs (current_gdbarch))
+  if (I386_LINUX_ORIG_EAX_REGNUM
+       < gdbarch_num_regs (get_regcache_arch (regcache)))
     regcache_raw_supply (regcache, I386_LINUX_ORIG_EAX_REGNUM,
                         regp + ORIG_EAX);
 }
@@ -230,7 +232,8 @@ fill_gregset (const struct regcache *regcache,
       regcache_raw_collect (regcache, i, regp + regmap[i]);
 
   if ((regno == -1 || regno == I386_LINUX_ORIG_EAX_REGNUM)
-      && I386_LINUX_ORIG_EAX_REGNUM < gdbarch_num_regs (current_gdbarch))
+      && I386_LINUX_ORIG_EAX_REGNUM
+          < gdbarch_num_regs (get_regcache_arch (regcache)))
     regcache_raw_collect (regcache, I386_LINUX_ORIG_EAX_REGNUM,
                          regp + ORIG_EAX);
 }
@@ -448,7 +451,8 @@ static int store_fpxregs (const struct regcache *regcache, int tid, int regno) {
    registers).  */
 
 static void
-i386_linux_fetch_inferior_registers (struct regcache *regcache, int regno)
+i386_linux_fetch_inferior_registers (struct target_ops *ops,
+                                    struct regcache *regcache, int regno)
 {
   int tid;
 
@@ -458,7 +462,7 @@ i386_linux_fetch_inferior_registers (struct regcache *regcache, int regno)
     {
       int i;
 
-      for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++)
+      for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
        if (regno == -1 || regno == i)
          fetch_register (regcache, i);
 
@@ -481,7 +485,7 @@ i386_linux_fetch_inferior_registers (struct regcache *regcache, int regno)
       /* The call above might reset `have_ptrace_getregs'.  */
       if (!have_ptrace_getregs)
        {
-         i386_linux_fetch_inferior_registers (regcache, regno);
+         i386_linux_fetch_inferior_registers (ops, regcache, regno);
          return;
        }
 
@@ -520,7 +524,8 @@ i386_linux_fetch_inferior_registers (struct regcache *regcache, int regno)
    do this for all registers (including the floating point and SSE
    registers).  */
 static void
-i386_linux_store_inferior_registers (struct regcache *regcache, int regno)
+i386_linux_store_inferior_registers (struct target_ops *ops,
+                                    struct regcache *regcache, int regno)
 {
   int tid;
 
@@ -530,7 +535,7 @@ i386_linux_store_inferior_registers (struct regcache *regcache, int regno)
     {
       int i;
 
-      for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++)
+      for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
        if (regno == -1 || regno == i)
          store_register (regcache, i);
 
@@ -625,7 +630,7 @@ i386_linux_dr_set (ptid_t ptid, int regnum, unsigned long value)
     perror_with_name (_("Couldn't write debug register"));
 }
 
-void
+static void
 i386_linux_dr_set_control (unsigned long control)
 {
   struct lwp_info *lp;
@@ -636,7 +641,7 @@ i386_linux_dr_set_control (unsigned long control)
     i386_linux_dr_set (ptid, DR_CONTROL, control);
 }
 
-void
+static void
 i386_linux_dr_set_addr (int regnum, CORE_ADDR addr)
 {
   struct lwp_info *lp;
@@ -649,13 +654,13 @@ i386_linux_dr_set_addr (int regnum, CORE_ADDR addr)
     i386_linux_dr_set (ptid, DR_FIRSTADDR + regnum, addr);
 }
 
-void
+static void
 i386_linux_dr_reset_addr (int regnum)
 {
   i386_linux_dr_set_addr (regnum, 0);
 }
 
-unsigned long
+static unsigned long
 i386_linux_dr_get_status (void)
 {
   return i386_linux_dr_get (inferior_ptid, DR_STATUS);
@@ -742,7 +747,8 @@ static const unsigned char linux_syscall[] = { 0xcd, 0x80 };
    If SIGNAL is nonzero, give it that signal.  */
 
 static void
-i386_linux_resume (ptid_t ptid, int step, enum target_signal signal)
+i386_linux_resume (struct target_ops *ops,
+                  ptid_t ptid, int step, enum target_signal signal)
 {
   int pid = PIDGET (ptid);
 
@@ -751,13 +757,15 @@ i386_linux_resume (ptid_t ptid, int step, enum target_signal signal)
   if (step)
     {
       struct regcache *regcache = get_thread_regcache (pid_to_ptid (pid));
+      struct gdbarch *gdbarch = get_regcache_arch (regcache);
+      enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
       ULONGEST pc;
       gdb_byte buf[LINUX_SYSCALL_LEN];
 
       request = PTRACE_SINGLESTEP;
 
       regcache_cooked_read_unsigned (regcache,
-                                    gdbarch_pc_regnum (current_gdbarch), &pc);
+                                    gdbarch_pc_regnum (gdbarch), &pc);
 
       /* Returning from a signal trampoline is done by calling a
          special system call (sigreturn or rt_sigreturn, see
@@ -768,7 +776,7 @@ i386_linux_resume (ptid_t ptid, int step, enum target_signal signal)
          that's about to be restored, and set the trace flag there.  */
 
       /* First check if PC is at a system call.  */
-      if (read_memory_nobpt (pc, buf, LINUX_SYSCALL_LEN) == 0
+      if (target_read_memory (pc, buf, LINUX_SYSCALL_LEN) == 0
          && memcmp (buf, linux_syscall, LINUX_SYSCALL_LEN) == 0)
        {
          ULONGEST syscall;
@@ -783,7 +791,7 @@ i386_linux_resume (ptid_t ptid, int step, enum target_signal signal)
 
              regcache_cooked_read_unsigned (regcache, I386_ESP_REGNUM, &sp);
              if (syscall == SYS_rt_sigreturn)
-               addr = read_memory_integer (sp + 8, 4) + 20;
+               addr = read_memory_integer (sp + 8, 4, byte_order) + 20;
              else
                addr = sp;
 
@@ -818,6 +826,14 @@ _initialize_i386_linux_nat (void)
   /* Fill in the generic GNU/Linux methods.  */
   t = linux_target ();
 
+  i386_use_watchpoints (t);
+
+  i386_dr_low.set_control = i386_linux_dr_set_control;
+  i386_dr_low.set_addr = i386_linux_dr_set_addr;
+  i386_dr_low.reset_addr = i386_linux_dr_reset_addr;
+  i386_dr_low.get_status = i386_linux_dr_get_status;
+  i386_set_debug_register_length (4);
+
   /* Override the default ptrace resume method.  */
   t->to_resume = i386_linux_resume;