armv7-a elf file load / kernel build

[xyluo555]

hello, I find that in the kernel build mode for armv7-a arch, the apps (elf file) contains R_ARM_THM_JUMP24 relocation sections, take the nsh file for example, and by default CONFIG_ARM_THUMB is false. so while loading elf file, the libs>libc>machine>arm>armv7-a>arch_elf.c>up_relocate function will report an error “ERROR: Unsupported relocation: ...”.

parts of the relocation section info of nsh are like this: Relocation section '.rel.text' at offset 0xd3a7c contains 2895 entries: Offset Info Type Sym.Value Sym. Name 00000014 0005ca1e R_ARM_THM_JUMP24 0000017d __aeabi_ldiv0 00000020 00056d0a R_ARM_THM_CALL 00000071 __udivmoddi4 000003d8 0006231e R_ARM_THM_JUMP24 0000017d __aeabi_idiv0 00000438 00001a2b R_ARM_MOVW_ABS_NC 000003f8 sig_trampoline 0000043c 00001a2c R_ARM_MOVT_ABS 000003f8 sig_trampoline

and the compiler option for nsh are like this: CC: nsh_consolemain.c arm-none-eabi-gcc -c -Wstrict-prototypes -Wno-attributes -Wno-unknown-pragmas -Wno-psabi -fno-common -pipe -fomit-frame-pointer -fno-common -Wall -Wshadow -Wundef -ffunction-sections -fdata-sections -g -mcpu=cortex-a9 -mfloat-abi=hard -mfpu=neon-vfpv3 -mlittle-endian -isystem /home/cloud/nuttx-12.4.0/apps/import/include -isystem /home/cloud/nuttx-12.4.0/apps/import/include -D__NuttX__ -DNDEBUG -I "/home/cloud/nuttx-12.4.0/apps/include" nsh_consolemain.c -o nsh_consolemain.c.home.cloud.nuttx-12.4.0.apps.nshlib.o

so the options like -mthumb -mthumb-interwork are not set.

but why there are some THUMB type relocaiton sections? who can help explan this, thanks very much. defconfig.txt