Move ARM_CPSR_GREGNUM to arch/arm-linux.h

[binutils-gdb.git] / gdb / gdbserver / remote-utils.c

diff --git a/gdb/gdbserver/remote-utils.c b/gdb/gdbserver/remote-utils.c
index ccc99f16a2f84da132e714c7bcd0b23c18cd580f..768d2e9711d87c9538d5d963b06e3d145af9e429 100644 (file)
--- a/gdb/gdbserver/remote-utils.c
+++ b/gdb/gdbserver/remote-utils.c
@@ -402,6 +402,11 @@ remote_close (void)
 {
   delete_file_handler (remote_desc);
 
+#ifndef USE_WIN32API
+  /* Remove SIGIO handler.  */
+  signal (SIGIO, SIG_IGN);
+#endif
+
 #ifdef USE_WIN32API
   closesocket (remote_desc);
 #else
@@ -775,19 +780,19 @@ check_remote_input_interrupt_request (void)
   input_interrupt (0);
 }
 
-/* Asynchronous I/O support.  SIGIO must be enabled when waiting, in order to
-   accept Control-C from the client, and must be disabled when talking to
-   the client.  */
+/* Asynchronous I/O support.  SIGIO must be unblocked when waiting,
+   in order to accept Control-C from the client, and must be blocked
+   when talking to the client.  */
 
 static void
-unblock_async_io (void)
+block_unblock_async_io (int block)
 {
 #ifndef USE_WIN32API
   sigset_t sigio_set;
 
   sigemptyset (&sigio_set);
   sigaddset (&sigio_set, SIGIO);
-  sigprocmask (SIG_UNBLOCK, &sigio_set, NULL);
+  sigprocmask (block ? SIG_BLOCK : SIG_UNBLOCK, &sigio_set, NULL);
 #endif
 }
 
@@ -823,9 +828,8 @@ enable_async_io (void)
   if (async_io_enabled)
     return;
 
-#ifndef USE_WIN32API
-  signal (SIGIO, input_interrupt);
-#endif
+  block_unblock_async_io (0);
+
   async_io_enabled = 1;
 #ifdef __QNX__
   nto_comctrl (1);
@@ -839,9 +843,8 @@ disable_async_io (void)
   if (!async_io_enabled)
     return;
 
-#ifndef USE_WIN32API
-  signal (SIGIO, SIG_IGN);
-#endif
+  block_unblock_async_io (1);
+
   async_io_enabled = 0;
 #ifdef __QNX__
   nto_comctrl (0);
@@ -852,12 +855,14 @@ disable_async_io (void)
 void
 initialize_async_io (void)
 {
-  /* Make sure that async I/O starts disabled.  */
+  /* Make sure that async I/O starts blocked.  */
   async_io_enabled = 1;
   disable_async_io ();
 
-  /* Make sure the signal is unblocked.  */
-  unblock_async_io ();
+  /* Install the signal handler.  */
+#ifndef USE_WIN32API
+  signal (SIGIO, input_interrupt);
+#endif
 }
 
 /* Internal buffer used by readchar.
@@ -1457,7 +1462,7 @@ clear_symbol_cache (struct sym_cache **symcache_p)
 int
 look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb)
 {
-  char own_buf[266], *p, *q;
+  char *p, *q;
   int len;
   struct sym_cache *sym;
   struct process_info *proc;
@@ -1492,23 +1497,37 @@ look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb)
   /* We ought to handle pretty much any packet at this point while we
      wait for the qSymbol "response".  That requires re-entering the
      main loop.  For now, this is an adequate approximation; allow
-     GDB to read from memory while it figures out the address of the
-     symbol.  */
-  while (own_buf[0] == 'm')
+     GDB to read from memory and handle 'v' packets (for vFile transfers)
+     while it figures out the address of the symbol.  */
+  while (1)
     {
-      CORE_ADDR mem_addr;
-      unsigned char *mem_buf;
-      unsigned int mem_len;
+      if (own_buf[0] == 'm')
+       {
+         CORE_ADDR mem_addr;
+         unsigned char *mem_buf;
+         unsigned int mem_len;
 
-      decode_m_packet (&own_buf[1], &mem_addr, &mem_len);
-      mem_buf = (unsigned char *) xmalloc (mem_len);
-      if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0)
-       bin2hex (mem_buf, own_buf, mem_len);
+         decode_m_packet (&own_buf[1], &mem_addr, &mem_len);
+         mem_buf = (unsigned char *) xmalloc (mem_len);
+         if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0)
+           bin2hex (mem_buf, own_buf, mem_len);
+         else
+           write_enn (own_buf);
+         free (mem_buf);
+         if (putpkt (own_buf) < 0)
+           return -1;
+       }
+      else if (own_buf[0] == 'v')
+       {
+         int new_len = -1;
+         handle_v_requests (own_buf, len, &new_len);
+         if (new_len != -1)
+           putpkt_binary (own_buf, new_len);
+         else
+           putpkt (own_buf);
+       }
       else
-       write_enn (own_buf);
-      free (mem_buf);
-      if (putpkt (own_buf) < 0)
-       return -1;
+       break;
       len = getpkt (own_buf);
       if (len < 0)
        return -1;
@@ -1556,7 +1575,6 @@ look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb)
 int
 relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc)
 {
-  char own_buf[266];
   int len;
   ULONGEST written = 0;