{bp-3536} testing/sig_sp_test: add test for SP context restore on signal return#3580
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Add a test that verifies modifying SP (REG_R13) in the saved register context is honored on signal return. The test pushes values onto the stack, triggers SIGALRM, and in the handler advances SP to skip a value, then verifies the correct value is popped after signal return. This exercises the SP relocation fix in arm_sigdeliver.c for ARMv7-M and ARMv8-M architectures. Signed-off-by: Andrew Au <cshung@gmail.com>
jerpelea
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acassis,
cederom,
linguini1,
lupyuen and
xiaoxiang781216
acassis
approved these changes
Jul 2, 2026
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Summary
Add a test that verifies modifying SP (REG_R13) in the saved register context is honored on signal return. The test pushes values onto the stack, triggers SIGALRM, and in the handler advances SP to skip a value, then verifies the correct value is popped after signal return.
This exercises the SP relocation fix in arm_sigdeliver.c for ARMv7-M and ARMv8-M architectures.
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