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, 49 insertions, 42 deletions

diff --git a/gas/doc/c-avr.texi b/gas/doc/c-avr.texi
index 305e64c..75b5d20 100644
--- a/gas/doc/c-avr.texi
+++ b/gas/doc/c-avr.texi
@@ -58,64 +58,71 @@ instructions (MCU types: attiny167, attiny1634, at90usb82, at90usb162,
 atmega8u2, atmega16u2, atmega32u2, ata5505).
 
 Instruction set avr4 is for the enhanced AVR core with up to 8K program
-memory space (MCU types: atmega48, atmega48a, atmega48pa, atmega48p, atmega8, 
-atmega8a, atmega88, atmega88a, atmega88p, atmega88pa, atmega8515, atmega8535, 
-atmega8hva, at90pwm1, at90pwm2, at90pwm2b, at90pwm3, at90pwm3b, at90pwm81, 
+memory space (MCU types: atmega48, atmega48a, atmega48pa, atmega48p, atmega8,
+atmega8a, atmega88, atmega88a, atmega88p, atmega88pa, atmega8515, atmega8535,
+atmega8hva, at90pwm1, at90pwm2, at90pwm2b, at90pwm3, at90pwm3b, at90pwm81,
 ata6285, ata6286).
 
 Instruction set avr5 is for the enhanced AVR core with up to 128K program
 memory space (MCU types: at90pwm161, atmega16, atmega16a, atmega161, atmega162,
-atmega163, atmega164a, atmega164p, atmega164pa, atmega165, atmega165a, 
+atmega163, atmega164a, atmega164p, atmega164pa, atmega165, atmega165a,
 atmega165p, atmega165pa, atmega168, atmega168a, atmega168p, atmega168pa,
 atmega169, atmega169a, atmega169p, atmega169pa, atmega32, atmega323, atmega324a,
 atmega324p, atmega324pa, atmega325, atmega325a, atmega32, atmega32a, atmega323,
 atmega324a, atmega324p, atmega324pa, atmega325, atmega325a, atmega325p,
-atmega325p, atmega325pa, atmega3250, atmega3250a, atmega3250p, atmega3250pa, 
-atmega328, atmega328p, atmega329, atmega329a, atmega329p, atmega329pa, 
-atmega3290a, atmega3290p, atmega3290pa, atmega406, atmega64, atmega64a, 
+atmega325p, atmega325pa, atmega3250, atmega3250a, atmega3250p, atmega3250pa,
+atmega328, atmega328p, atmega329, atmega329a, atmega329p, atmega329pa,
+atmega3290a, atmega3290p, atmega3290pa, atmega406, atmega64, atmega64a,
 atmega64rfr2, atmega644rfr2, atmega640, atmega644, atmega644a, atmega644p,
 atmega644pa, atmega645, atmega645a, atmega645p, atmega6450, atmega6450a,
 atmega6450p, atmega649, atmega649a, atmega649p, atmega6490, atmega6490a,
-atmega6490p, atmega16hva, atmega16hva2, atmega16hvb, atmega16hvbrevb, 
+atmega6490p, atmega16hva, atmega16hva2, atmega16hvb, atmega16hvbrevb,
 atmega32hvb, atmega32hvbrevb, atmega64hve, at90can32, at90can64, at90pwm161,
 at90pwm216, at90pwm316, atmega32c1, atmega64c1, atmega16m1, atmega32m1,
 atmega64m1, atmega16u4, atmega32u4, atmega32u6, at90usb646, at90usb647, at94k,
 at90scr100, ata5790, ata5795).
 
-Instruction set avr51 is for the enhanced AVR core with exactly 128K program
-memory space (MCU types: atmega128, atmega128a, atmega1280, atmega1281, 
-atmega1284, atmega1284p, atmega128rfa1, atmega128rfr2, atmega1284rfr2,
-at90can128, at90usb1286, at90usb1287, m3000).
-
-Instruction set avr6 is for the enhanced AVR core with a 3-byte PC (MCU types:
-atmega2560, atmega2561, atmega256rfr2, atmega2564rfr2).
-
-Instruction set avrxmega2 is for the XMEGA AVR core with 8K to 64K program
-memory space and less than 64K data space (MCU types: atxmega16a4, atxmega16a4u,
-atxmega16c4, atxmega16d4, atxmega16x1, atxmega32a4, atxmega32a4u, atxmega32c4, 
-atxmega32d4, atxmega16e5, atxmega8e5, atxmega32e5, atxmega32x1).
-
-Instruction set avrxmega3 is for the XMEGA AVR core with 8K to 64K program
-memory space and greater than 64K data space (MCU types: none).
-
-Instruction set avrxmega4 is for the XMEGA AVR core with up to 64K program
-memory space and less than 64K data space (MCU types: atxmega64a3, atxmega64a3u, 
-atxmega64a4u, atxmega64b1, atxmega64b3, atxmega64c3, atxmega64d3, atxmega64d4).
-
-Instruction set avrxmega5 is for the XMEGA AVR core with up to 64K program
-memory space and greater than 64K data space (MCU types: atxmega64a1,
-atxmega64a1u).
-
-Instruction set avrxmega6 is for the XMEGA AVR core with larger than 64K program
-memory space and less than 64K data space (MCU types: atxmega128a3, 
-atxmega128a3u, atxmega128c3, atxmega128d3, atxmega128d4, atxmega192a3, 
-atxmega192a3u, atxmega128b1, atxmega128b3, atxmega192c3, atxmega192d3, 
-atxmega256a3, atxmega256a3u, atxmega256a3b, atxmega256a3bu, atxmega256c3, 
-atxmega256d3, atxmega384c3, atxmega256d3).
-
-Instruction set avrxmega7 is for the XMEGA AVR core with larger than 64K program
-memory space and greater than 64K data space (MCU types: atxmega128a1,
-atxmega128a1u, atxmega128a4u).
+Instruction set avr51 is for the enhanced AVR core with exactly 128K
+program memory space (MCU types: atmega128, atmega128a, atmega1280,
+atmega1281, atmega1284, atmega1284p, atmega128rfa1, atmega128rfr2,
+atmega1284rfr2, at90can128, at90usb1286, at90usb1287, m3000).
+
+Instruction set avr6 is for the enhanced AVR core with a 3-byte PC
+(MCU types: atmega2560, atmega2561, atmega256rfr2, atmega2564rfr2).
+
+Instruction set avrxmega2 is for the XMEGA AVR core with 8K to 64K
+program memory space and less than 64K data space (MCU types:
+atxmega16a4, atxmega16a4u, atxmega16c4, atxmega16d4, atxmega16x1,
+atxmega32a4, atxmega32a4u, atxmega32c4, atxmega32d4, atxmega16e5,
+atxmega8e5, atxmega32e5, atxmega32x1).
+
+Instruction set avrxmega3 is for the XMEGA AVR core with 8K to 64K
+program memory space and greater than 64K data space (MCU types:
+none).
+
+Instruction set avrxmega4 is for the XMEGA AVR core with up to 64K
+program memory space and less than 64K data space (MCU types:
+atxmega64a3, atxmega64a3u, atxmega64a4u, atxmega64b1, atxmega64b3,
+atxmega64c3, atxmega64d3, atxmega64d4).
+
+Instruction set avrxmega5 is for the XMEGA AVR core with up to 64K
+program memory space and greater than 64K data space (MCU types:
+atxmega64a1, atxmega64a1u).
+
+Instruction set avrxmega6 is for the XMEGA AVR core with larger than
+64K program memory space and less than 64K data space (MCU types:
+atxmega128a3, atxmega128a3u, atxmega128c3, atxmega128d3, atxmega128d4,
+atxmega192a3, atxmega192a3u, atxmega128b1, atxmega128b3, atxmega192c3,
+atxmega192d3, atxmega256a3, atxmega256a3u, atxmega256a3b,
+atxmega256a3bu, atxmega256c3, atxmega256d3, atxmega384c3,
+atxmega256d3).
+
+Instruction set avrxmega7 is for the XMEGA AVR core with larger than
+64K program memory space and greater than 64K data space (MCU types:
+atxmega128a1, atxmega128a1u, atxmega128a4u).
+
+Instruction set avrtiny is for the ATtiny4/5/9/10/20/40
+microcontrollers.
 
 @cindex @code{-mall-opcodes} command line option, AVR
 @item -mall-opcodes