[Bug libc/21539] New: S390: Mismatch between kernel and glibc ptrace.h with request 12: PTRACE_SINGLEBLOCK vs PTRACE_GETREGS.

["stli at linux dot vnet.ibm.com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=21539

            Bug ID: 21539
           Summary: S390: Mismatch between kernel and glibc ptrace.h with
                    request 12: PTRACE_SINGLEBLOCK vs PTRACE_GETREGS.
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: stli at linux dot vnet.ibm.com
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

On s390, there is a mismatch for request 12 between kernel and glibc ptrace.h.

<glibc>/sysdeps/unix/sysv/linux/s390/sys/ptrace.h:
  /* Get all general purpose registers used by a processes.
     This is not supported on all machines.  */
   PTRACE_GETREGS = 12,
#define PT_GETREGS PTRACE_GETREGS

<kernel>/arch/s390/include/uapi/asm/ptrace.h:
#define PTRACE_SINGLEBLOCK      12      /* resume execution until next branch
*/


>From the kernel perspective PTRACE_GETREGS/PTRACE_SETREGS has never existed on
s390/s390x. The definitions in glibc header has always been wrong and no
application could have been expected to work.
Thus the glibc definitions have to be adjusted in order to match the kernel
ones.

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