callfuncs.exp: avoid spurious register differences in sparc64 targets.

The Linux kernel disables the FPU upon returning to userland.  This
introduces spurious failures in the register preservation tests in
callfuncs.exp, since the pstate.PEF bit gets cleared after system
calls.

This patch filters out the pstate register in sparc64-*-linux-gnu
targets, so the relevant tests are no longer fooled and pass.

gdb/testsuite/ChangeLog:

2015-11-20  Jose E. Marchesi  <jose.marchesi@oracle.com>

        * gdb.base/callfuncs.exp (fetch_all_registers): Filter out the
          pstate register when comparing registers values in
          sparc64-*-linux-gnu targets to avoid spurious differences.
This commit is contained in:
Jose E. Marchesi 2015-11-20 11:36:07 +01:00
parent 9c88ed8f11
commit bb0974456e
2 changed files with 16 additions and 0 deletions

View File

@ -1,3 +1,9 @@
2015-11-20 Jose E. Marchesi <jose.marchesi@oracle.com>
* gdb.base/callfuncs.exp (fetch_all_registers): Filter out the
pstate register when comparing registers values in
sparc64-*-linux-gnu targets to avoid spurious differences.
2015-11-20 Jose E. Marchesi <jose.marchesi@oracle.com>
* gdb.arch/sparc-sysstep.c: Include unistd.h for getpid.

View File

@ -254,6 +254,16 @@ proc fetch_all_registers {test} {
}
exp_continue
}
-re "^pstate\[ \t\]+\[^\r\n\]+\r\n" {
if [istarget "sparc64-*-linux-gnu"] {
# Filter out the pstate register, since in sparc64
# targets the Linux kernel disables pstate.PEF when
# returning from traps, giving spurious differences.
} else {
lappend all_registers_lines $expect_out(0,string)
}
exp_continue
}
-re "^last_break\[ \t\]+\[^\r\n\]+\r\n" {
if [istarget "s390*-*-*"] {
# Filter out last_break which is read-only,