windows: Use ptid from regcache in register fetch/store

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

diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c
index 389e7acb5b1fddb8aae482adedd09951d6e12af2..76313db98914973135247bddc6314ef8464202bc 100644 (file)
--- a/gdb/windows-nat.c
+++ b/gdb/windows-nat.c
@@ -460,18 +460,15 @@ windows_delete_thread (ptid_t ptid, DWORD exit_code)
 }
 
 static void
-do_windows_fetch_inferior_registers (struct regcache *regcache, int r)
+do_windows_fetch_inferior_registers (struct regcache *regcache,
+                                    windows_thread_info *th, int r)
 {
-  char *context_offset = ((char *) &current_thread->context) + mappings[r];
+  char *context_offset = ((char *) &th->context) + mappings[r];
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
   long l;
 
-  if (!current_thread)
-    return;    /* Windows sometimes uses a non-existent thread id in its
-                  events.  */
-
-  if (current_thread->reload_context)
+  if (th->reload_context)
     {
 #ifdef __CYGWIN__
       if (have_saved_context)
@@ -480,14 +477,13 @@ do_windows_fetch_inferior_registers (struct regcache *regcache, int r)
             cygwin has informed us that we should consider the signal
             to have occurred at another location which is stored in
             "saved_context.  */
-         memcpy (&current_thread->context, &saved_context,
+         memcpy (&th->context, &saved_context,
                  __COPY_CONTEXT_SIZE);
          have_saved_context = 0;
        }
       else
 #endif
        {
-         windows_thread_info *th = current_thread;
          th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
          CHECK (GetThreadContext (th->h, &th->context));
          /* Copy dr values from that thread.
@@ -503,7 +499,7 @@ do_windows_fetch_inferior_registers (struct regcache *regcache, int r)
              dr[7] = th->context.Dr7;
            }
        }
-      current_thread->reload_context = 0;
+      th->reload_context = 0;
     }
 
   if (r == I387_FISEG_REGNUM (tdep))
@@ -529,7 +525,7 @@ do_windows_fetch_inferior_registers (struct regcache *regcache, int r)
   else
     {
       for (r = 0; r < gdbarch_num_regs (gdbarch); r++)
-       do_windows_fetch_inferior_registers (regcache, r);
+       do_windows_fetch_inferior_registers (regcache, th, r);
     }
 }
 
@@ -537,38 +533,42 @@ static void
 windows_fetch_inferior_registers (struct target_ops *ops,
                                  struct regcache *regcache, int r)
 {
-  current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE);
-  /* Check if current_thread exists.  Windows sometimes uses a non-existent
+  DWORD pid = ptid_get_tid (regcache_get_ptid (regcache));
+  windows_thread_info *th = thread_rec (pid, TRUE);
+
+  /* Check if TH exists.  Windows sometimes uses a non-existent
      thread id in its events.  */
-  if (current_thread)
-    do_windows_fetch_inferior_registers (regcache, r);
+  if (th != NULL)
+    do_windows_fetch_inferior_registers (regcache, th, r);
 }
 
 static void
-do_windows_store_inferior_registers (const struct regcache *regcache, int r)
+do_windows_store_inferior_registers (const struct regcache *regcache,
+                                    windows_thread_info *th, int r)
 {
-  if (!current_thread)
-    /* Windows sometimes uses a non-existent thread id in its events.  */;
-  else if (r >= 0)
+  if (r >= 0)
     regcache_raw_collect (regcache, r,
-                         ((char *) &current_thread->context) + mappings[r]);
+                         ((char *) &th->context) + mappings[r]);
   else
     {
       for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++)
-       do_windows_store_inferior_registers (regcache, r);
+       do_windows_store_inferior_registers (regcache, th, r);
     }
 }
 
-/* Store a new register value into the current thread context.  */
+/* Store a new register value into the context of the thread tied to
+   REGCACHE.  */
 static void
 windows_store_inferior_registers (struct target_ops *ops,
                                  struct regcache *regcache, int r)
 {
-  current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE);
-  /* Check if current_thread exists.  Windows sometimes uses a non-existent
+  DWORD pid = ptid_get_tid (regcache_get_ptid (regcache));
+  windows_thread_info *th = thread_rec (pid, TRUE);
+
+  /* Check if TH exists.  Windows sometimes uses a non-existent
      thread id in its events.  */
-  if (current_thread)
-    do_windows_store_inferior_registers (regcache, r);
+  if (th != NULL)
+    do_windows_store_inferior_registers (regcache, th, r);
 }
 
 /* Encapsulate the information required in a call to
@@ -669,32 +669,27 @@ windows_make_so (const char *name, LPVOID load_addr)
   p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1);
   if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0)
     {
-      bfd *abfd;
       asection *text = NULL;
       CORE_ADDR text_vma;
 
-      abfd = gdb_bfd_open (so->so_name, "pei-i386", -1);
+      gdb_bfd_ref_ptr abfd (gdb_bfd_open (so->so_name, "pei-i386", -1));
 
-      if (!abfd)
+      if (abfd == NULL)
        return so;
 
-      if (bfd_check_format (abfd, bfd_object))
-       text = bfd_get_section_by_name (abfd, ".text");
+      if (bfd_check_format (abfd.get (), bfd_object))
+       text = bfd_get_section_by_name (abfd.get (), ".text");
 
       if (!text)
-       {
-         gdb_bfd_unref (abfd);
-         return so;
-       }
+       return so;
 
       /* The symbols in a dll are offset by 0x1000, which is the
         offset from 0 of the first byte in an image - because of the
         file header and the section alignment.  */
       cygwin_load_start = (CORE_ADDR) (uintptr_t) ((char *)
                                                   load_addr + 0x1000);
-      cygwin_load_end = cygwin_load_start + bfd_section_size (abfd, text);
-
-      gdb_bfd_unref (abfd);
+      cygwin_load_end = cygwin_load_start + bfd_section_size (abfd.get (),
+                                                             text);
     }
 #endif