Move instruction decoding into new arch/ directory

This patch moves the following functions into the arch/ common
directory, in new files arch/aarch64-insn.{h,c}.  They are prefixed with
'aarch64_':

 - aarch64_decode_adrp
 - aarch64_decode_b
 - aarch64_decode_cb
 - aarch64_decode_tb

We will need them to implement fast tracepoints in GDBserver.

For consistency, this patch also adds the 'aarch64_' prefix to static
decoding functions that do not need to be shared right now.

V2:
 make sure the formatting issues propagated
 fix `gdbserver/configure.srv'.

gdb/ChangeLog:

	* Makefile.in (ALL_64_TARGET_OBS): Add aarch64-insn.o.
	(HFILES_NO_SRCDIR): Add arch/aarch64-insn.h.
	(aarch64-insn.o): New rule.
	* configure.tgt (aarch64*-*-elf): Add aarch64-insn.o.
	(aarch64*-*-linux*): Likewise.
	* arch/aarch64-insn.c: New file.
	* arch/aarch64-insn.h: New file.
	* aarch64-tdep.c: Include arch/aarch64-insn.h.
	(aarch64_debug): Move to arch/aarch64-insn.c.  Declare in
	arch/aarch64-insn.h.
	(decode_add_sub_imm): Rename to ...
	(aarch64_decode_add_sub_imm): ... this.
	(decode_adrp): Rename to ...
	(aarch64_decode_adrp): ... this.  Move to arch/aarch64-insn.c.
	Declare in arch/aarch64-insn.h.
	(decode_b): Rename to ...
	(aarch64_decode_b): ... this.  Move to arch/aarch64-insn.c.
	Declare in arch/aarch64-insn.h.
	(decode_bcond): Rename to ...
	(aarch64_decode_bcond): ... this.  Move to arch/aarch64-insn.c.
	Declare in arch/aarch64-insn.h.
	(decode_br): Rename to ...
	(aarch64_decode_br): ... this.
	(decode_cb): Rename to ...
	(aarch64_decode_cb): ... this.  Move to arch/aarch64-insn.c.
	Declare in arch/aarch64-insn.h.
	(decode_eret): Rename to ...
	(aarch64_decode_eret): ... this.
	(decode_movz): Rename to ...
	(aarch64_decode_movz): ... this.
	(decode_orr_shifted_register_x): Rename to ...
	(aarch64_decode_orr_shifted_register_x): ... this.
	(decode_ret): Rename to ...
	(aarch64_decode_ret): ... this.
	(decode_stp_offset): Rename to ...
	(aarch64_decode_stp_offset): ... this.
	(decode_stp_offset_wb): Rename to ...
	(aarch64_decode_stp_offset_wb): ... this.
	(decode_stur): Rename to ...
	(aarch64_decode_stur): ... this.
	(decode_tb): Rename to ...
	(aarch64_decode_tb): ... this.  Move to arch/aarch64-insn.c.
	Declare in arch/aarch64-insn.h.
	(aarch64_analyze_prologue): Adjust calls to renamed functions.

gdb/gdbserver/ChangeLog:

	* Makefile.in (aarch64-insn.o): New rule.
	* configure.srv (aarch64*-*-linux*): Add aarch64-insn.o.

3 files changed, 12 insertions, 0 deletions

diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 16b02ca..83a7848 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,8 @@
+2015-09-21  Pierre Langlois  <pierre.langlois@arm.com>
+
+	* Makefile.in (aarch64-insn.o): New rule.
+	* configure.srv (aarch64*-*-linux*): Add aarch64-insn.o.
+
 2015-09-21  Yao Qi  <yao.qi@linaro.org>
 
 	* ax.c [!IN_PROCESS_AGENT] (gdb_agent_op_sizes): Define it.
diff --git a/gdb/gdbserver/Makefile.in b/gdb/gdbserver/Makefile.in
index b715a32..d096663 100644
--- a/gdb/gdbserver/Makefile.in
+++ b/gdb/gdbserver/Makefile.in
@@ -625,6 +625,12 @@ linux-namespaces.o: ../nat/linux-namespaces.c
 	$(COMPILE) $<
 	$(POSTCOMPILE)
 
+# Architecture specific object files rules from ../arch
+
+aarch64-insn.o: ../arch/aarch64-insn.c
+	$(COMPILE) $<
+	$(POSTCOMPILE)
+
 aarch64.c : $(srcdir)/../regformats/aarch64.dat $(regdat_sh)
 	$(SHELL) $(regdat_sh) $(srcdir)/../regformats/aarch64.dat aarch64.c
 reg-arm.c : $(srcdir)/../regformats/reg-arm.dat $(regdat_sh)
diff --git a/gdb/gdbserver/configure.srv b/gdb/gdbserver/configure.srv
index aa232f8..a62df83 100644
--- a/gdb/gdbserver/configure.srv
+++ b/gdb/gdbserver/configure.srv
@@ -53,6 +53,7 @@ case "${target}" in
 			srv_tgtobj="linux-aarch64-low.o aarch64-linux-hw-point.o"
 			srv_tgtobj="$srv_tgtobj linux-aarch32-low.o"
 			srv_tgtobj="$srv_tgtobj aarch64-linux.o"
+			srv_tgtobj="$srv_tgtobj aarch64-insn.o"
 			srv_tgtobj="${srv_tgtobj} $srv_linux_obj"
 			srv_xmlfiles="aarch64.xml"
 			srv_xmlfiles="${srv_xmlfiles} aarch64-core.xml"