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from 965566d2e8 libc/stdio: add total_len back add 4b70e4ff77 arm/cortex-r: sync ARM_THUMB support from cortex-a No new revisions were added by this update. Summary of changes: arch/arm/src/armv7-r/arm_initialstate.c | 4 + arch/arm/src/armv7-r/arm_schedulesigaction.c | 6 + libs/libc/machine/arm/armv7-r/arch_elf.c | 275 ++++++++++++++++++++++++--- 3 files changed, 256 insertions(+), 29 deletions(-)