RE: [PATCH] Add support for ATtiny4/5/9/10/20/40 microcontrollers

["S, Pitchumani" <Pitchumani dot S at atmel dot com>]

S, Pitchumani, Tuesday, June 24, 2014 1:57 PM
> To: Barney Stratford
> Cc: binutils@sourceware.org; Denis Chertykov
> Subject: RE: [PATCH] Add support for ATtiny4/5/9/10/20/40 microcontrollers
> 
> > -----Original Message-----
> > From: binutils-owner@sourceware.org [mailto:binutils-
> owner@sourceware.org]
> > On Behalf Of Barney Stratford
> > Sent: Sunday, June 15, 2014 12:35 AM
> > To: binutils@sourceware.org
> > Subject: [PATCH] Add support for ATtiny4/5/9/10/20/40 microcontrollers
> >
> > I've recently been working on getting the assembler and linker to work
> > with the ATtiny40 family of microcontrollers. I've also added some
> > functionality to the avr assembler in general. As this may be useful to
> > others, I'm attaching my patches against the current git head. Can
> someone
> > review and commit them please?
> >
> > 1_avrtiny10.patch contains the basic avrtiny10 code, including a linker
> > reloc for the 16-bit version of the lds and sts instructions.
> >
> > 2_avr_io_relocs.patch allows you to refer to the I/O registers by symbol
> > name.
> >
> > 3_avr_reg_name.patch allows you to refer to r26-r31 by name as
> > /[xyz][hl]?/. It also fixes a bug that would prevent you from using a
> > symbol whose name begins with 'r' to refer to a register.
> 
> Hi,
> 
> I looked at your patches. Atmel distributed binutils also have tiny
> architecture support. Though both are similar, there are some differences
> such as architecture name, id, LDS16 reloc size, memory access range
> (0xbf) etc.
> 
> I can check all the differences and we can sync to avoid conflicts.

Hi,

I have merged the tiny support patch of Barney Startford and Atmel.
Updated patch is attached. Please review.

If OK, could someone commit please?

Regards,
Pitchumani


bfd/ChangeLog

2014-06-30  Barney Stratford  <barney_stratford@fastmail.fm>
            Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com>
            Pitchumani Sivanupandi <pitchumani.s@atmel.com>
            Soundararajan <Sounderarajan.D@atmel.com>

    * 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.

gas/ChangeLog

2014-06-30  Barney Stratford  <barney_stratford@fastmail.fm>
            Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com>
            Pitchumani Sivanupandi <pitchumani.s@atmel.com>
            Soundararajan <Sounderarajan.D@atmel.com>

    * 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.

ChangeLog

2014-06-30  Barney Stratford  <barney_stratford@fastmail.fm>
            Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com>
            Pitchumani Sivanupandi <pitchumani.s@atmel.com>
            Soundararajan <Sounderarajan.D@atmel.com>

	* 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.

ld/ChangeLog

2014-06-30  Barney Stratford  <barney_stratford@fastmail.fm>
            Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com>
            Pitchumani Sivanupandi <pitchumani.s@atmel.com>
            Soundararajan <Sounderarajan.D@atmel.com>

	* 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.

Attachment: avrtiny-support.patch
Description: avrtiny-support.patch