os: Fix C++ exception support for relocatable ELF binaries#7186
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os: Fix C++ exception support for relocatable ELF binaries#7186pcs1265 wants to merge 1 commit intoSamsung:masterfrom
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This commit fixes linker error while build procedure when CONFIG_ELF is enabled and add exception data section handling for ELF binary loader.
The linker error:
```
LD: tinyara
make[1]: Leaving directory '/root/tizenrt/os/arch/arm/src'
CP: tinyara.bin
Preparing final ../build/output/bin/app1 binary
Verify ../build/output/bin/common
Undefined Symbols in ../build/output/bin/common
U __exidx_end unwind-arm.c:0
U __exidx_start unwind-arm.c:0
w __gnu_Unwind_Find_exidx unwind-arm.c:0
make: *** [post] Error 1
Makefile.unix:542: recipe for target 'post' failed
```
The section required for exception data is relocated in "R_ARM_TARGET2" type, so added that type relocation support to ELF binary loader.
and `ARMV7M_TARGET2_PREL` config is not used correctly, removed it.
NOTE : As described in help message of LIBCXX_EXCEPTION can be used with docker version 2.0.0 or later.
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This commit fixes linker error while build procedure when CONFIG_ELF is enabled and add exception data section handling for ELF binary loader.
The linker error:
The section required for exception data is relocated in "R_ARM_TARGET2" type, so added that type relocation support to ELF binary loader.
and
ARMV7M_TARGET2_PRELconfig is not used correctly, removed it.NOTE : As described in help message of LIBCXX_EXCEPTION can be used with docker version 2.0.0 or later.