在 2023/8/31 6:05, Chris Johns 写道:
On 31/8/2023 12:48 am, zhengxiaojun wrote:
Hi,
I use the latest rtems-tools to generate RAP file, I found the object file
become too small(elf,2184bytes==>rap,736bytes) and the file loaded failed, error
message like this "load app.out error:offset past end of file: offset=736
size=736 error."
What arch and BSP?
ARM, imx6ull
I reverted the rtl-rap.cpp commit( 0ad4aaafc20afcb5aacb7a82b0b3a8150b638975
linker/rap: Ignore relocation records with no section), the rap file can be
loaded.
I think the commit has the wrong ticket id, it should be 4069 ...
https://devel.rtems.org/ticket/4069
My guess is the length includes the relocs that have been dropped because they
do not have a symbol section. A reloc without a symbol section cannot be located
because you do not know the section to locate it against.
Are you able to review the rtems-ld code for the issue?
I am trying to find something, but I do not know elf/rap format well. I
found when ignore synsect==0, the GLOBAL symbol will be ignore too.
Should the GLOBAL symbol be dealt with?
Here is part of ELF:
Symbol table (.symtab)
[ Nr ] Value Size Type Bind Sect Name
[ 0] 00000000 00000000 NOTYPE LOCAL 0
[ 1] 00000000 00000000 NOTYPE LOCAL 4 $d
[ 2] 00000001 0000011e FUNC LOCAL 1 task_test
[ 3] 00000000 00000000 NOTYPE LOCAL 1 $t
[ 4] 00000000 00000000 NOTYPE LOCAL 3 $d
[ 5] 00000000 00000000 NOTYPE LOCAL 4 .LC0
[ 6] 00000030 00000000 NOTYPE LOCAL 4 .LC3
[ 7] 00000000 00000000 NOTYPE LOCAL 3 .LANCHOR0
[ 8] 0000000c 00000000 NOTYPE LOCAL 4 .LC1
[ 9] 00000038 00000000 NOTYPE LOCAL 4 .LC4
[ 10] 00000000 00000000 NOTYPE GLOBAL 0 putchar
[ 11] 00000000 00000000 NOTYPE GLOBAL 0 printf
[ 12] 00000000 00000000 NOTYPE GLOBAL 0 rtems_task_wake_after
[ 13] 00000000 00000000 NOTYPE GLOBAL 0 puts
[ 14] 00000000 00000000 NOTYPE GLOBAL 0 tcflush
[ 15] 00000121 00000054 FUNC GLOBAL 1 appmain
[ 16] 00000000 00000000 NOTYPE GLOBAL 0 rtems_task_start
[ 17] 00000000 00000000 NOTYPE GLOBAL 0 cfsetispeed
[ 18] 00000000 00000000 NOTYPE GLOBAL 0 write
[ 19] 00000000 00000000 NOTYPE GLOBAL 0 cfsetospeed
[ 20] 00000000 00000000 NOTYPE GLOBAL 0 read
[ 21] 00000000 00000000 NOTYPE GLOBAL 0 tcgetattr
[ 22] 00000000 00000000 NOTYPE GLOBAL 0 open
[ 23] 00000000 00000000 NOTYPE GLOBAL 0 tcsetattr
[ 24] 00000000 00000000 NOTYPE GLOBAL 0 rtems_task_create
Chris
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