PR/56864 CVS commit: [netbsd-9] src/lib/libc/arch/hppa/sys

["Martin Husemann" <martin%netbsd.org@localhost>]

The following reply was made to PR port-hppa/56864; it has been noted by GNATS.

From: "Martin Husemann" <martin%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/56864 CVS commit: [netbsd-9] src/lib/libc/arch/hppa/sys
Date: Mon, 6 Jun 2022 11:31:13 +0000

 Module Name:	src
 Committed By:	martin
 Date:		Mon Jun  6 11:31:13 UTC 2022
 
 Modified Files:
 	src/lib/libc/arch/hppa/sys [netbsd-9]: ptrace.S
 
 Log Message:
 Pull up following revision(s) (requested by skrll in ticket #1464):
 
 	lib/libc/arch/hppa/sys/ptrace.S: revision 1.8
 
 Save and restore %r19 the "linkage table pointer register" across the call
 to __cerror so if the ptrace syscall fails we can call __cerror again with
 the correct %r19 value.
 
 Do this even though the call of __cerror doesn't go via the PLT because
 __cerror calls __errno which does.
 
 Analysis and fix from Tom Lane in
 PR port-hppa/56864: hppa: ptrace(2) dumps core when returning an error
 
 I changed the location of where %r19 is stored on the stack to follow the
 ABI.
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.6 -r1.6.66.1 src/lib/libc/arch/hppa/sys/ptrace.S
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.