bsd-uthread: Use ptid from regcache instead of inferior_ptid

[deliverable/binutils-gdb.git] / gdb / bsd-uthread.c

diff --git a/gdb/bsd-uthread.c b/gdb/bsd-uthread.c
index d10c5d4edae47067a628e47e04514a31076a79a5..08b8f36969c7c4ae66a57383135322e76078d6a4 100644 (file)
--- a/gdb/bsd-uthread.c
+++ b/gdb/bsd-uthread.c
@@ -1,6 +1,6 @@
 /* BSD user-level threads support.
 
-   Copyright (C) 2005-2014 Free Software Foundation, Inc.
+   Copyright (C) 2005-2017 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -29,7 +29,6 @@
 #include "symfile.h"
 #include "target.h"
 
-#include "gdb_assert.h"
 #include "gdb_obstack.h"
 
 #include "bsd-uthread.h"
@@ -69,7 +68,9 @@ bsd_uthread_set_supply_uthread (struct gdbarch *gdbarch,
                                void (*supply_uthread) (struct regcache *,
                                                        int, CORE_ADDR))
 {
-  struct bsd_uthread_ops *ops = gdbarch_data (gdbarch, bsd_uthread_data);
+  struct bsd_uthread_ops *ops
+    = (struct bsd_uthread_ops *) gdbarch_data (gdbarch, bsd_uthread_data);
+
   ops->supply_uthread = supply_uthread;
 }
 
@@ -81,7 +82,9 @@ bsd_uthread_set_collect_uthread (struct gdbarch *gdbarch,
                         void (*collect_uthread) (const struct regcache *,
                                                  int, CORE_ADDR))
 {
-  struct bsd_uthread_ops *ops = gdbarch_data (gdbarch, bsd_uthread_data);
+  struct bsd_uthread_ops *ops
+    = (struct bsd_uthread_ops *) gdbarch_data (gdbarch, bsd_uthread_data);
+
   ops->collect_uthread = collect_uthread;
 }
 
@@ -125,11 +128,11 @@ static int bsd_uthread_active;
 static CORE_ADDR
 bsd_uthread_lookup_address (const char *name, struct objfile *objfile)
 {
-  struct minimal_symbol *sym;
+  struct bound_minimal_symbol sym;
 
   sym = lookup_minimal_symbol (name, NULL, objfile);
-  if (sym)
-    return MSYMBOL_VALUE_ADDRESS (sym);
+  if (sym.minsym)
+    return BMSYMBOL_VALUE_ADDRESS (sym);
 
   return 0;
 }
@@ -162,7 +165,8 @@ static int
 bsd_uthread_activate (struct objfile *objfile)
 {
   struct gdbarch *gdbarch = target_gdbarch ();
-  struct bsd_uthread_ops *ops = gdbarch_data (gdbarch, bsd_uthread_data);
+  struct bsd_uthread_ops *ops
+    = (struct bsd_uthread_ops *) gdbarch_data (gdbarch, bsd_uthread_data);
 
   /* Skip if the thread stratum has already been activated.  */
   if (bsd_uthread_active)
@@ -248,7 +252,7 @@ bsd_uthread_solib_loaded (struct so_list *so)
 
   for (names = bsd_uthread_solib_names; *names; names++)
     {
-      if (strncmp (so->so_original_name, *names, strlen (*names)) == 0)
+      if (startswith (so->so_original_name, *names))
        {
          solib_read_symbols (so, 0);
 
@@ -284,10 +288,17 @@ bsd_uthread_fetch_registers (struct target_ops *ops,
                             struct regcache *regcache, int regnum)
 {
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
-  struct bsd_uthread_ops *uthread_ops = gdbarch_data (gdbarch, bsd_uthread_data);
-  CORE_ADDR addr = ptid_get_tid (inferior_ptid);
+  struct bsd_uthread_ops *uthread_ops
+    = (struct bsd_uthread_ops *) gdbarch_data (gdbarch, bsd_uthread_data);
+  ptid_t ptid = regcache_get_ptid (regcache);
+  CORE_ADDR addr = ptid_get_tid (ptid);
   struct target_ops *beneath = find_target_beneath (ops);
   CORE_ADDR active_addr;
+  struct cleanup *cleanup = save_inferior_ptid ();
+
+  /* We are doing operations (e.g. reading memory) that rely on
+     inferior_ptid.  */
+  inferior_ptid = ptid;
 
   /* Always fetch the appropriate registers from the layer beneath.  */
   beneath->to_fetch_registers (beneath, regcache, regnum);
@@ -304,6 +315,8 @@ bsd_uthread_fetch_registers (struct target_ops *ops,
       uthread_ops->supply_uthread (regcache, regnum,
                                   addr + bsd_uthread_thread_ctx_offset);
     }
+
+  do_cleanups (cleanup);
 }
 
 static void
@@ -311,10 +324,17 @@ bsd_uthread_store_registers (struct target_ops *ops,
                             struct regcache *regcache, int regnum)
 {
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
-  struct bsd_uthread_ops *uthread_ops = gdbarch_data (gdbarch, bsd_uthread_data);
+  struct bsd_uthread_ops *uthread_ops
+    = (struct bsd_uthread_ops *) gdbarch_data (gdbarch, bsd_uthread_data);
   struct target_ops *beneath = find_target_beneath (ops);
-  CORE_ADDR addr = ptid_get_tid (inferior_ptid);
+  ptid_t ptid = regcache_get_ptid (regcache);
+  CORE_ADDR addr = ptid_get_tid (ptid);
   CORE_ADDR active_addr;
+  struct cleanup *cleanup = save_inferior_ptid ();
+
+  /* We are doing operations (e.g. reading memory) that rely on
+     inferior_ptid.  */
+  inferior_ptid = ptid;
 
   active_addr = bsd_uthread_read_memory_address (bsd_uthread_thread_run_addr);
   if (addr != 0 && addr != active_addr)
@@ -329,6 +349,8 @@ bsd_uthread_store_registers (struct target_ops *ops,
          request to the layer beneath.  */
       beneath->to_store_registers (beneath, regcache, regnum);
     }
+
+  do_cleanups (cleanup);
 }
 
 static ptid_t
@@ -395,7 +417,7 @@ bsd_uthread_thread_alive (struct target_ops *ops, ptid_t ptid)
 {
   enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
   struct target_ops *beneath = find_target_beneath (ops);
-  CORE_ADDR addr = ptid_get_tid (inferior_ptid);
+  CORE_ADDR addr = ptid_get_tid (ptid);
 
   if (addr != 0)
     {
@@ -413,12 +435,14 @@ bsd_uthread_thread_alive (struct target_ops *ops, ptid_t ptid)
 }
 
 static void
-bsd_uthread_find_new_threads (struct target_ops *ops)
+bsd_uthread_update_thread_list (struct target_ops *ops)
 {
   pid_t pid = ptid_get_pid (inferior_ptid);
   int offset = bsd_uthread_thread_next_offset;
   CORE_ADDR addr;
 
+  prune_threads ();
+
   addr = bsd_uthread_read_memory_address (bsd_uthread_thread_list_addr);
   while (addr != 0)
     {
@@ -517,7 +541,7 @@ bsd_uthread_target (void)
   t->to_wait = bsd_uthread_wait;
   t->to_resume = bsd_uthread_resume;
   t->to_thread_alive = bsd_uthread_thread_alive;
-  t->to_find_new_threads = bsd_uthread_find_new_threads;
+  t->to_update_thread_list = bsd_uthread_update_thread_list;
   t->to_extra_thread_info = bsd_uthread_extra_thread_info;
   t->to_pid_to_str = bsd_uthread_pid_to_str;
   t->to_stratum = thread_stratum;