Protect nat/gdb_thread_db.h against multiple inclusion.

[deliverable/binutils-gdb.git] / gdb / ia64-linux-nat.c

diff --git a/gdb/ia64-linux-nat.c b/gdb/ia64-linux-nat.c
index 237f2c7525b1b4ab2fa3522ad3b68a47f158dd60..03bd14086c2ed853d3cc7948b2dcf3d13cb817f5 100644 (file)
--- a/gdb/ia64-linux-nat.c
+++ b/gdb/ia64-linux-nat.c
@@ -1,7 +1,7 @@
 /* Functions specific to running gdb native on IA-64 running
    GNU/Linux.
 
-   Copyright (C) 1999-2012 Free Software Foundation, Inc.
+   Copyright (C) 1999-2015 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -19,7 +19,6 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
-#include "gdb_string.h"
 #include "inferior.h"
 #include "target.h"
 #include "gdbcore.h"
@@ -28,7 +27,7 @@
 #include "linux-nat.h"
 
 #include <signal.h>
-#include <sys/ptrace.h>
+#include "nat/gdb_ptrace.h"
 #include "gdb_wait.h"
 #ifdef HAVE_SYS_REG_H
 #include <sys/reg.h>
@@ -511,9 +510,9 @@ store_debug_register (ptid_t ptid, int idx, long val)
 {
   int tid;
 
-  tid = TIDGET (ptid);
+  tid = ptid_get_lwp (ptid);
   if (tid == 0)
-    tid = PIDGET (ptid);
+    tid = ptid_get_pid (ptid);
 
   (void) ptrace (PT_WRITE_U, tid, (PTRACE_TYPE_ARG3) (PT_DBR + 8 * idx), val);
 }
@@ -542,7 +541,9 @@ is_power_of_2 (int val)
 }
 
 static int
-ia64_linux_insert_watchpoint (CORE_ADDR addr, int len, int rw,
+ia64_linux_insert_watchpoint (struct target_ops *self,
+                             CORE_ADDR addr, int len,
+                             enum target_hw_bp_type type,
                              struct expression *cond)
 {
   struct lwp_info *lp;
@@ -569,7 +570,7 @@ ia64_linux_insert_watchpoint (CORE_ADDR addr, int len, int rw,
   dbr_addr = (long) addr;
   dbr_mask = (~(len - 1) & 0x00ffffffffffffffL);  /* construct mask to match */
   dbr_mask |= 0x0800000000000000L;           /* Only match privilege level 3 */
-  switch (rw)
+  switch (type)
     {
     case hw_write:
       dbr_mask |= (1L << 62);                  /* Set w bit */
@@ -596,7 +597,9 @@ ia64_linux_insert_watchpoint (CORE_ADDR addr, int len, int rw,
 }
 
 static int
-ia64_linux_remove_watchpoint (CORE_ADDR addr, int len, int type,
+ia64_linux_remove_watchpoint (struct target_ops *self,
+                             CORE_ADDR addr, int len,
+                             enum target_hw_bp_type type,
                              struct expression *cond)
 {
   int idx;
@@ -649,13 +652,14 @@ static int
 ia64_linux_stopped_data_address (struct target_ops *ops, CORE_ADDR *addr_p)
 {
   CORE_ADDR psr;
-  siginfo_t *siginfo_p;
+  siginfo_t siginfo;
   struct regcache *regcache = get_current_regcache ();
 
-  siginfo_p = linux_nat_get_siginfo (inferior_ptid);
+  if (!linux_nat_get_siginfo (inferior_ptid, &siginfo))
+    return 0;
 
-  if (siginfo_p->si_signo != SIGTRAP
-      || (siginfo_p->si_code & 0xffff) != 0x0004 /* TRAP_HWBKPT */)
+  if (siginfo.si_signo != SIGTRAP
+      || (siginfo.si_code & 0xffff) != 0x0004 /* TRAP_HWBKPT */)
     return 0;
 
   regcache_cooked_read_unsigned (regcache, IA64_PSR_REGNUM, &psr);
@@ -663,19 +667,21 @@ ia64_linux_stopped_data_address (struct target_ops *ops, CORE_ADDR *addr_p)
                            for the next instruction.  */
   regcache_cooked_write_unsigned (regcache, IA64_PSR_REGNUM, psr);
 
-  *addr_p = (CORE_ADDR)siginfo_p->si_addr;
+  *addr_p = (CORE_ADDR) siginfo.si_addr;
   return 1;
 }
 
 static int
-ia64_linux_stopped_by_watchpoint (void)
+ia64_linux_stopped_by_watchpoint (struct target_ops *ops)
 {
   CORE_ADDR addr;
-  return ia64_linux_stopped_data_address (&current_target, &addr);
+  return ia64_linux_stopped_data_address (ops, &addr);
 }
 
 static int
-ia64_linux_can_use_hw_breakpoint (int type, int cnt, int othertype)
+ia64_linux_can_use_hw_breakpoint (struct target_ops *self,
+                                 enum bptype type,
+                                 int cnt, int othertype)
 {
   return 1;
 }
@@ -832,22 +838,49 @@ ia64_linux_store_registers (struct target_ops *ops,
 }
 
 
-static LONGEST (*super_xfer_partial) (struct target_ops *, enum target_object,
-                                     const char *, gdb_byte *,
-                                     const gdb_byte *, ULONGEST, LONGEST);
+static target_xfer_partial_ftype *super_xfer_partial;
+
+/* Implement the to_xfer_partial target_ops method.  */
 
-static LONGEST 
+static enum target_xfer_status
 ia64_linux_xfer_partial (struct target_ops *ops,
                         enum target_object object,
                         const char *annex,
                         gdb_byte *readbuf, const gdb_byte *writebuf,
-                        ULONGEST offset, LONGEST len)
+                        ULONGEST offset, ULONGEST len,
+                        ULONGEST *xfered_len)
 {
-  if (object == TARGET_OBJECT_UNWIND_TABLE && writebuf == NULL && offset == 0)
-    return syscall (__NR_getunwind, readbuf, len);
+  if (object == TARGET_OBJECT_UNWIND_TABLE && readbuf != NULL)
+    {
+      static long gate_table_size;
+      gdb_byte *tmp_buf;
+      long res;
+
+      /* Probe for the table size once.  */
+      if (gate_table_size == 0)
+        gate_table_size = syscall (__NR_getunwind, NULL, 0);
+      if (gate_table_size < 0)
+       return TARGET_XFER_E_IO;
+
+      if (offset >= gate_table_size)
+       return TARGET_XFER_EOF;
+
+      tmp_buf = alloca (gate_table_size);
+      res = syscall (__NR_getunwind, tmp_buf, gate_table_size);
+      if (res < 0)
+       return TARGET_XFER_E_IO;
+      gdb_assert (res == gate_table_size);
+
+      if (offset + len > gate_table_size)
+       len = gate_table_size - offset;
+
+      memcpy (readbuf, tmp_buf + offset, len);
+      *xfered_len = len;
+      return TARGET_XFER_OK;
+    }
 
   return super_xfer_partial (ops, object, annex, readbuf, writebuf,
-                            offset, len);
+                            offset, len, xfered_len);
 }
 
 /* For break.b instruction ia64 CPU forgets the immediate value and generates