Add support for the AVR Tiny series of microcontrollers.

        * archures.c: add avrtiny architecture for avr target.
	* bfd-in2.h: Regenerate.
	* cpu-avr.c (arch_info_struct): add avrtiny arch info.
	* elf32-avr.c (elf_avr_howto_table): new relocation R_AVR_LDS_STS_16
	added for 16 bit LDS/STS instruction of avrtiny arch.
	(avr_reloc_map): reloc R_AVR_LDS_STS_16 is mapped to
	BFD_RELOC_AVR_LDS_STS_16.
	(bfd_elf_avr_final_write_processing): select machine number avrtiny arch.
	(elf32_avr_object_p): set machine number for avrtiny arch.
	* libbfd.h: Regenerate.
	* reloc.c: Add documentation for BFD_RELOC_AVR_LDS_STS_16 reloc.

         * config/tc-avr.c (mcu_types): Add avrtiny arch.
	Add avrtiny arch devices attiny4, attiny5, attiny9, attiny10, attiny20
	and attiny40.
	(md_show_usage): Add avrtiny arch in usage message.
	(avr_operand): validate and issue error for invalid register for avrtiny.
	add new reloc exp for 16 bit lds/sts instruction.
	(md_apply_fix): check 16 bit lds/sts operand for out of range and encode.
	(md_assemble): check ISA for arch and issue diagnostic.

	* include/elf/avr.h (E_AVR_MACH_AVRTINY): define avrtiny machine number.
	(R_AVR_LDS_STS_16): define 16 bit lds/sts reloc number.
	* include/opcode/avr.h (AVR_ISA_TINY): define avrtiny specific ISA.
	(AVR_ISA_2xxxa): define ISA without LPM.
	(AVR_ISA_AVRTINY): define avrtiny arch ISA.
	Add doc for contraint used in 16 bit lds/sts.
	Adjust ISA group for icall, ijmp, pop and push.
	Add 16 bit lds/sts encoding and update 32 bit lds/sts constraints.
	* opcodes/avr-dis.c (avr_operand): Handle constraint j for 16 bit lds/sts.
	(print_insn_avr): do not select opcode if insn ISA is avrtiny and machine
	is not avrtiny.

	* Makefile.am (ALL_EMULATION_SOURCES): add avrtiny emulation source.
	(eavrtiny.c): add rules for avrtiny emulation source.
	* Makefile.in: Regenerate.
	* configure.tgt: Add avrtiny to avr target emulations.
	* scripttempl/avrtiny.sc: New file.
	linker script template for avrtiny arch.
	* emulparams/avrtiny.sh: New file.
	emulation parameters for avrtiny arch.

1 files changed, 22 insertions, 21 deletions

diff --git a/bfd/cpu-avr.c b/bfd/cpu-avr.c
index 060c9a2..d3da25a 100644
--- a/bfd/cpu-avr.c
+++ b/bfd/cpu-avr.c
@@ -67,7 +67,6 @@ compatible (const bfd_arch_info_type * a,
     return a;
   if (a->mach == bfd_mach_avr31 && b->mach == bfd_mach_avr3)
     return b;
-
   if (a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr35)
     return a;
   if (a->mach == bfd_mach_avr35 && b->mach == bfd_mach_avr3)
@@ -78,7 +77,6 @@ compatible (const bfd_arch_info_type * a,
   if (a->mach == bfd_mach_avr51 && b->mach == bfd_mach_avr5)
     return b;
 
-
   return NULL;
 }
 
@@ -135,25 +133,28 @@ static const bfd_arch_info_type arch_info_struct[] =
   /* 3-Byte PC.  */
   N (22, bfd_mach_avr6, "avr:6", FALSE, & arch_info_struct[10]),
 
-  /* Xmega 1 */
-  N (24, bfd_mach_avrxmega1, "avr:101", FALSE, & arch_info_struct[11]),
-
-  /* Xmega 2 */
-  N (24, bfd_mach_avrxmega2, "avr:102", FALSE, & arch_info_struct[12]),
-
-  /* Xmega 3 */
-  N (24, bfd_mach_avrxmega3, "avr:103", FALSE, & arch_info_struct[13]),
-
-  /* Xmega 4 */
-  N (24, bfd_mach_avrxmega4, "avr:104", FALSE, & arch_info_struct[14]),
-
-  /* Xmega 5 */
-  N (24, bfd_mach_avrxmega5, "avr:105", FALSE, & arch_info_struct[15]),
-
-  /* Xmega 6 */
-  N (24, bfd_mach_avrxmega6, "avr:106", FALSE, & arch_info_struct[16]),
-
-  /* Xmega 7 */
+  /* Tiny core (AVR Tiny).  */
+  N (16, bfd_mach_avrtiny, "avr:100", FALSE, & arch_info_struct[11]),
+
+  /* Xmega 1.  */
+  N (24, bfd_mach_avrxmega1, "avr:101", FALSE, & arch_info_struct[12]),
+
+  /* Xmega 2.  */
+  N (24, bfd_mach_avrxmega2, "avr:102", FALSE, & arch_info_struct[13]),
+  
+  /* Xmega 3.  */
+  N (24, bfd_mach_avrxmega3, "avr:103", FALSE, & arch_info_struct[14]),
+  
+  /* Xmega 4.  */
+  N (24, bfd_mach_avrxmega4, "avr:104", FALSE, & arch_info_struct[15]),
+  
+  /* Xmega 5.  */
+  N (24, bfd_mach_avrxmega5, "avr:105", FALSE, & arch_info_struct[16]),
+  
+  /* Xmega 6.  */
+  N (24, bfd_mach_avrxmega6, "avr:106", FALSE, & arch_info_struct[17]),
+  
+  /* Xmega 7.  */
   N (24, bfd_mach_avrxmega7, "avr:107", FALSE, NULL)
 
 };