Commit Graph

7 Commits

Author SHA1 Message Date
Denis Chertykov 7585b2b8b6 Prevent .noinit section from incorrect placement for AVR.
When .data and .bss sections are empty .noinit section is placed at data
region's start. This will be incorrect for devices that has different
data start address than data region start in linker script.
The patch updates .noinit section's VMA to end of .bss section. So, .noinit
section will be placed at .data section address (-Tdata=<address>) when .data
and .bss sections are empty.

ld/

	* scripttempl/avr.sc (.noinit): Force .noinit VMA to end of .bss VMA.
	* scripttempl/avrtiny.sc (.noinit): Likewise.
2016-01-25 22:33:25 +03:00
Alan Modra 6f2750feaf Copyright update for binutils 2016-01-01 23:00:01 +10:30
Senthil Kumar Selvaraj cb0728165e This patch modifies the AVR linker script templates to use __<name>_REGION_LENGTH__ symbols, if provided, for setting memory region lengths, defaulting to the current constant values otherwise.
ld	* scripttempl/avr.sc: Add new user_signatures region. Define and Use
	symbols for all region lengths.
	* scripttempl/avrtiny.sc: Define and use symbols for all region lengths.

testsuite * ld-avr/region_overflow.d: New test.
	* ld-avr/region_overflow.s: Likewise.
2015-02-24 11:26:28 +00:00
Alan Modra b90efa5b79 ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
Denis Chertykov 51b26797b4 * avrtiny.sc: Apply avr.sc fixes. 2014-11-11 20:44:03 +03:00
Nick Clifton 985743c7fb Add copyright notice to linker script files. 2014-08-20 10:34:58 +01:00
Barney Stratford f36e88862f 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.
2014-07-01 10:20:17 +01:00