Sync proc_service definition with GLIBC

GLIBC BZ#20311 [1] proc_service.h install patch also remove 'const'
attributes from ps_get_thread_area and comment #15 discuss why to remove
the const attribute (basically since it a callback with the struct
ps_prochandle owned by the client it should be able to modify it if
it the case).

On default build this is not the issue and current g++ does not trigger
any issue with this mismatch declaration.  However, on some bootstrap
build configuration where gdbserver is build with gcc instead this
triggers:

error: conflicting types for 'ps_get_thread_area'

This patch fixes it by syncing the declaration with GLIBC.

[1] https://sourceware.org/bugzilla/show_bug.cgi?id=20311

gdb/ChangeLog:

2016-08-25  Adhemerval Zanella  <adhemerval.zanella@linaro.org>

	* aarch64-linux-nat.c (ps_get_thread_area): Remove const from
	struct ps_prochandle.
	* amd64-linux-nat.c (ps_get_thread_area): Likewise.
	* arm-linux-nat.c (ps_get_thread_area): Likewise.
	* gdb_proc_service.h (ps_get_thread_area): Likewise.
	* i386-linux-nat.c (ps_get_thread_area): Likewise.
	* m68klinux-nat.c (ps_get_thread_area): Likewise.
	* mips-linux-nat.c (ps_get_thread_area): Likewise.
	* nat/aarch64-linux.c (aarch64_ps_get_thread_area): Likewise.
	* nat/aarch64-linux.h (aarch64_ps_get_thread_area): Likewise.
	* xtensa-linux-nat.c (ps_get_thread_area): Likewise.

gdb/gdbserver/ChangeLog:

2016-08-25  Adhemerval Zanella  <adhemerval.zanella@linaro.org>

	PR server/20491
	* gdb_proc_service.h (ps_get_thread_area): Remove const from struct
	ps_prochandle.
	* linux-aarch64-low.c (ps_get_thread_area): Likewise.
	* linux-arm-low.c (ps_get_thread_area): Likewise.
	* linux-crisv32-low.c (ps_get_thread_area): Likewise.
	* linux-m68k-low.c (ps_get_thread_area): Likewise.
	* linux-mips-low.c (ps_get_thread_area): Likewise.
	* linux-nios2-low.c (ps_get_thread_area): Likewise.
	* linux-tic6x-low.c (ps_get_thread_area): Likewise.
	* linux-x86-low.c (ps_get_thread_area): Likewise.
	* linux-xtensa-low.c (ps_get_thread_area): Likewise.

11 files changed, 25 insertions, 10 deletions

diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index c28c2cb..af0140f 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,18 @@
+2016-08-25  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
+
+	PR server/20491
+	* gdb_proc_service.h (ps_get_thread_area): Remove const from struct
+	ps_prochandle.
+	* linux-aarch64-low.c (ps_get_thread_area): Likewise.
+	* linux-arm-low.c (ps_get_thread_area): Likewise.
+	* linux-crisv32-low.c (ps_get_thread_area): Likewise.
+	* linux-m68k-low.c (ps_get_thread_area): Likewise.
+	* linux-mips-low.c (ps_get_thread_area): Likewise.
+	* linux-nios2-low.c (ps_get_thread_area): Likewise.
+	* linux-tic6x-low.c (ps_get_thread_area): Likewise.
+	* linux-x86-low.c (ps_get_thread_area): Likewise.
+	* linux-xtensa-low.c (ps_get_thread_area): Likewise.
+
 2016-08-19  Pedro Alves  <palves@redhat.com>
 
 	* linux-x86-low.c (amd64_emit_call): Emit missing call opcode.
diff --git a/gdb/gdbserver/gdb_proc_service.h b/gdb/gdbserver/gdb_proc_service.h
index 99bf226..cec9231 100644
--- a/gdb/gdbserver/gdb_proc_service.h
+++ b/gdb/gdbserver/gdb_proc_service.h
@@ -107,7 +107,7 @@ extern pid_t ps_getpid (struct ps_prochandle *);
 /* Fetch the special per-thread address associated with the given LWP.
    This call is only used on a few platforms (most use a normal register).
    The meaning of the `int' parameter is machine-dependent.  */
-extern ps_err_e ps_get_thread_area (const struct ps_prochandle *,
+extern ps_err_e ps_get_thread_area (struct ps_prochandle *,
 				    lwpid_t, int, psaddr_t *);
 
 
diff --git a/gdb/gdbserver/linux-aarch64-low.c b/gdb/gdbserver/linux-aarch64-low.c
index 6efa035..e54a8ba 100644
--- a/gdb/gdbserver/linux-aarch64-low.c
+++ b/gdb/gdbserver/linux-aarch64-low.c
@@ -401,7 +401,7 @@ aarch64_stopped_by_watchpoint (void)
 /* Fetch the thread-local storage pointer for libthread_db.  */
 
 ps_err_e
-ps_get_thread_area (const struct ps_prochandle *ph,
+ps_get_thread_area (struct ps_prochandle *ph,
 		    lwpid_t lwpid, int idx, void **base)
 {
   return aarch64_ps_get_thread_area (ph, lwpid, idx, base,
diff --git a/gdb/gdbserver/linux-arm-low.c b/gdb/gdbserver/linux-arm-low.c
index e1261e5..ed9b356 100644
--- a/gdb/gdbserver/linux-arm-low.c
+++ b/gdb/gdbserver/linux-arm-low.c
@@ -270,7 +270,7 @@ get_next_pcs_read_memory_unsigned_integer (CORE_ADDR memaddr,
 /* Fetch the thread-local storage pointer for libthread_db.  */
 
 ps_err_e
-ps_get_thread_area (const struct ps_prochandle *ph,
+ps_get_thread_area (struct ps_prochandle *ph,
 		    lwpid_t lwpid, int idx, void **base)
 {
   if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) != 0)
diff --git a/gdb/gdbserver/linux-crisv32-low.c b/gdb/gdbserver/linux-crisv32-low.c
index 16c1f72..fea6d5b 100644
--- a/gdb/gdbserver/linux-crisv32-low.c
+++ b/gdb/gdbserver/linux-crisv32-low.c
@@ -309,7 +309,7 @@ cris_stopped_data_address (void)
 }
 
 ps_err_e
-ps_get_thread_area (const struct ps_prochandle *ph,
+ps_get_thread_area (struct ps_prochandle *ph,
                     lwpid_t lwpid, int idx, void **base)
 {
   if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) != 0)
diff --git a/gdb/gdbserver/linux-m68k-low.c b/gdb/gdbserver/linux-m68k-low.c
index df3d7c6..78a340f 100644
--- a/gdb/gdbserver/linux-m68k-low.c
+++ b/gdb/gdbserver/linux-m68k-low.c
@@ -152,7 +152,7 @@ m68k_breakpoint_at (CORE_ADDR pc)
 /* Fetch the thread-local storage pointer for libthread_db.  */
 
 ps_err_e
-ps_get_thread_area (const struct ps_prochandle *ph,
+ps_get_thread_area (struct ps_prochandle *ph,
 		    lwpid_t lwpid, int idx, void **base)
 {
   if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) != 0)
diff --git a/gdb/gdbserver/linux-mips-low.c b/gdb/gdbserver/linux-mips-low.c
index 30a03d5..9356bb3 100644
--- a/gdb/gdbserver/linux-mips-low.c
+++ b/gdb/gdbserver/linux-mips-low.c
@@ -637,7 +637,7 @@ mips_stopped_data_address (void)
 /* Fetch the thread-local storage pointer for libthread_db.  */
 
 ps_err_e
-ps_get_thread_area (const struct ps_prochandle *ph,
+ps_get_thread_area (struct ps_prochandle *ph,
 		    lwpid_t lwpid, int idx, void **base)
 {
   if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) != 0)
diff --git a/gdb/gdbserver/linux-nios2-low.c b/gdb/gdbserver/linux-nios2-low.c
index a32bc1a..02fe198 100644
--- a/gdb/gdbserver/linux-nios2-low.c
+++ b/gdb/gdbserver/linux-nios2-low.c
@@ -145,7 +145,7 @@ nios2_breakpoint_at (CORE_ADDR where)
 /* Fetch the thread-local storage pointer for libthread_db.  */
 
 ps_err_e
-ps_get_thread_area (const struct ps_prochandle *ph,
+ps_get_thread_area (struct ps_prochandle *ph,
                     lwpid_t lwpid, int idx, void **base)
 {
   if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) != 0)
diff --git a/gdb/gdbserver/linux-tic6x-low.c b/gdb/gdbserver/linux-tic6x-low.c
index e40a3af..6b90560 100644
--- a/gdb/gdbserver/linux-tic6x-low.c
+++ b/gdb/gdbserver/linux-tic6x-low.c
@@ -274,7 +274,7 @@ tic6x_breakpoint_at (CORE_ADDR where)
 /* Fetch the thread-local storage pointer for libthread_db.  */
 
 ps_err_e
-ps_get_thread_area (const struct ps_prochandle *ph,
+ps_get_thread_area (struct ps_prochandle *ph,
 		    lwpid_t lwpid, int idx, void **base)
 {
   if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) != 0)
diff --git a/gdb/gdbserver/linux-x86-low.c b/gdb/gdbserver/linux-x86-low.c
index d847b93..acded1a 100644
--- a/gdb/gdbserver/linux-x86-low.c
+++ b/gdb/gdbserver/linux-x86-low.c
@@ -186,7 +186,7 @@ is_64bit_tdesc (void)
 /* Called by libthread_db.  */
 
 ps_err_e
-ps_get_thread_area (const struct ps_prochandle *ph,
+ps_get_thread_area (struct ps_prochandle *ph,
 		    lwpid_t lwpid, int idx, void **base)
 {
 #ifdef __x86_64__
diff --git a/gdb/gdbserver/linux-xtensa-low.c b/gdb/gdbserver/linux-xtensa-low.c
index 6e945ea..431082c 100644
--- a/gdb/gdbserver/linux-xtensa-low.c
+++ b/gdb/gdbserver/linux-xtensa-low.c
@@ -177,7 +177,7 @@ xtensa_breakpoint_at (CORE_ADDR where)
 /* Called by libthread_db.  */
 
 ps_err_e
-ps_get_thread_area (const struct ps_prochandle *ph,
+ps_get_thread_area (struct ps_prochandle *ph,
                     lwpid_t lwpid, int idx, void **base)
 {
   xtensa_elf_gregset_t regs;