PR/59236 CVS commit: src

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

The following reply was made to PR port-evbmips/59236; it has been noted by GNATS.

From: "Taylor R Campbell" <riastradh%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/59236 CVS commit: src
Date: Sun, 20 Apr 2025 22:31:01 +0000

 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.