Georg-Johann Lay schrieb:
> This is a port of an old patch of mine that got integrated in some
> avr-gcc distributions.
>
> Linking against __do_copy_data resp. __do_clear_bss is only needed if
> there is actually stuff in .[ro]data resp. .bss. This saves some space
> on tiny targets.
>
> Regression-tested for C
>
> Johann
>
> 2011-04-18 Georg-Johann Lay <a...@gjlay.de>
>
> PR target/18145
>
> * config/avr/avr.h (TARGET_ASM_INIT_SECTIONS): Move to
> config/avr/avr.c
> (TARGET_ASM_NAMED_SECTION): Change to avr_asm_named_section.
> (ASM_OUTPUT_COMMON): Forward to avr_asm_output_common.
> (ASM_OUTPUT_LOCAL): Forward to avr_asm_output_local.
>
> * config/avr/avr-protos.h (avr_asm_output_common,
> avr_asm_output_local): New prototypes.
>
> * config/avr/avr.c .
> (avr_asm_named_section, avr_asm_output_local,
> avr_asm_output_common, avr_output_data_section_asm_op,
> avr_output_bss_section_asm_op): New functions to update...
> (avr_need_clear_bss_p, avr_need_copy_data_p): ...thise new variables.
> (TARGET_ASM_INIT_SECTIONS): Overwrite section callbacks for
> data_section, bss_section.
> (avr_file_start): Move output of __do_copy_data, __do_clear_bss
> from here to...
> (avr_file_end): ...here.
Fixed ChangeLog
PR target/18145
* config/avr/avr.h (TARGET_ASM_INIT_SECTIONS): Delete.
(TARGET_ASM_NAMED_SECTION): Change to avr_asm_named_section.
(ASM_OUTPUT_COMMON): Forward to avr_asm_output_common.
(ASM_OUTPUT_LOCAL): Forward to avr_asm_output_local.
* config/avr/avr-protos.h (avr_asm_output_common,
avr_asm_output_local): New prototypes.
* config/avr/avr.c (avr_asm_named_section, avr_asm_output_local,
avr_asm_output_common, avr_output_data_section_asm_op,
avr_output_bss_section_asm_op): New functions to update...
(avr_need_clear_bss_p, avr_need_copy_data_p): ...thise new variables.
(TARGET_ASM_INIT_SECTIONS): Define.
(avr_asm_init_sections): Overwrite section callbacks for
data_section, bss_section.
(avr_file_start): Move output of __do_copy_data, __do_clear_bss
from here to...
(avr_file_end): ...here.
