S390: Improve comments for s390-tdbregs test case
authorAndreas Arnez <arnez@linux.vnet.ibm.com>
Fri, 19 Jan 2018 13:14:07 +0000 (14:14 +0100)
committerAndreas Arnez <arnez@linux.vnet.ibm.com>
Fri, 19 Jan 2018 13:14:07 +0000 (14:14 +0100)
commitd6ad07fdef94777bb512f072361706bcc743d51c
tree2b46c42dc0f92450250d265e92fd8d2002b990a4
parentee3fbc1ebb0cdd0785f4c328c5daaa4a4cdf3f91
S390: Improve comments for s390-tdbregs test case

This adds more explanation as to why the test case must be compiled with
the -msoft-float option.  It also documents the my_tbegin and my_tend
functions.

gdb/testsuite/ChangeLog:

* gdb.arch/s390-tdbregs.c (my_tbegin): Add comment documenting the
function.
(my_tend): Likewise.
* gdb.arch/s390-tdbregs.exp: Enhance comment; explain the
rationale of avoiding FP- and vector instructions.
gdb/testsuite/ChangeLog
gdb/testsuite/gdb.arch/s390-tdbregs.c
gdb/testsuite/gdb.arch/s390-tdbregs.exp