CVS commit: src

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Sun Apr 20 22:31:01 UTC 2025

Modified Files:
        src/distrib/sets/lists/debug: mi
        src/distrib/sets/lists/tests: mi
        src/tests/kernel: Makefile t_signal_and_sp.c
        src/tests/kernel/arch/aarch64: stack_pointer.h
Added Files:
        src/tests/kernel: h_execsp.c h_execsp.h
        src/tests/kernel/arch/aarch64: execsp.S signalsphandler.S
        src/tests/kernel/arch/x86_64: execsp.S signalsphandler.S
            stack_pointer.h

Log Message:
Test stack pointer alignment in various scenarios.

1. elf entry point
2. main function
3. signal handler

Extend the test to amd64 while here -- fortunately both aarch64 and
amd64 pass, but others, such as mips, will fail:

PR kern/59327: user stack pointer is not aligned properly

This extends the test that was previously written for:

PR kern/58149: aarch64: Cannot return from a signal handler if SP was
misaligned when the signal arrived

With any luck, this will help us to systematically eradicate misaligned
stack pointers as hypothesized to be the reason for:

PR port-mips/59236: Multiple segfaults in erlite3 boot


To generate a diff of this commit:
cvs rdiff -u -r1.476 -r1.477 src/distrib/sets/lists/debug/mi
cvs rdiff -u -r1.1369 -r1.1370 src/distrib/sets/lists/tests/mi
cvs rdiff -u -r1.87 -r1.88 src/tests/kernel/Makefile
cvs rdiff -u -r0 -r1.1 src/tests/kernel/h_execsp.c \
    src/tests/kernel/h_execsp.h
cvs rdiff -u -r1.1 -r1.2 src/tests/kernel/t_signal_and_sp.c
cvs rdiff -u -r0 -r1.1 src/tests/kernel/arch/aarch64/execsp.S \
    src/tests/kernel/arch/aarch64/signalsphandler.S
cvs rdiff -u -r1.1 -r1.2 src/tests/kernel/arch/aarch64/stack_pointer.h
cvs rdiff -u -r0 -r1.1 src/tests/kernel/arch/x86_64/execsp.S \
    src/tests/kernel/arch/x86_64/signalsphandler.S \
    src/tests/kernel/arch/x86_64/stack_pointer.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.