--- /dev/null
+2007-06-25 Jan Kratochvil <jan.kratochvil@redhat.com>
+
+ * gdb.threads/atomic-seq-threaded.c,
+ gdb.threads/atomic-seq-threaded.exp: New files.
+
+Index: gdb-6.8.50.20081128/gdb/testsuite/gdb.threads/atomic-seq-threaded.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ gdb-6.8.50.20081128/gdb/testsuite/gdb.threads/atomic-seq-threaded.c 2008-12-08 22:27:01.000000000 +0100
+@@ -0,0 +1,171 @@
++/* This testcase is part of GDB, the GNU debugger.
++
++ Copyright 2007 Free Software Foundation, Inc.
++
++ This program is free software; you can redistribute it and/or modify
++ it under the terms of the GNU General Public License as published by
++ the Free Software Foundation; either version 2 of the License, or
++ (at your option) any later version.
++
++ This program is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ GNU General Public License for more details.
++
++ You should have received a copy of the GNU General Public License
++ along with this program; if not, write to the Free Software
++ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
++ MA 02110-1301, USA. */
++
++/* Test stepping over RISC atomic sequences.
++ This variant testcases the code for stepping another thread while skipping
++ over the atomic sequence in the former thread
++ (STEPPING_PAST_SINGLESTEP_BREAKPOINT).
++ Code comes from gcc/testsuite/gcc.dg/sync-2.c */
++
++/* { dg-options "-march=i486" { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
++/* { dg-options "-mcpu=v9" { target sparc*-*-* } } */
++
++/* Test functionality of the intrinsics for 'short' and 'char'. */
++
++#include <stdlib.h>
++#include <string.h>
++#include <pthread.h>
++#include <assert.h>
++#include <unistd.h>
++
++#define LOOPS 2
++
++static int unused;
++
++static char AI[18];
++static char init_qi[18] = { 3,5,7,9,0,0,0,0,-1,0,0,0,0,0,-1,0,0,0 };
++static char test_qi[18] = { 3,5,7,9,1,4,22,-12,7,8,9,7,1,-12,7,8,9,7 };
++
++static void
++do_qi (void)
++{
++ if (__sync_fetch_and_add(AI+4, 1) != 0)
++ abort ();
++ if (__sync_fetch_and_add(AI+5, 4) != 0)
++ abort ();
++ if (__sync_fetch_and_add(AI+6, 22) != 0)
++ abort ();
++ if (__sync_fetch_and_sub(AI+7, 12) != 0)
++ abort ();
++ if (__sync_fetch_and_and(AI+8, 7) != (char)-1)
++ abort ();
++ if (__sync_fetch_and_or(AI+9, 8) != 0)
++ abort ();
++ if (__sync_fetch_and_xor(AI+10, 9) != 0)
++ abort ();
++ if (__sync_fetch_and_nand(AI+11, 7) != 0)
++ abort ();
++
++ if (__sync_add_and_fetch(AI+12, 1) != 1)
++ abort ();
++ if (__sync_sub_and_fetch(AI+13, 12) != (char)-12)
++ abort ();
++ if (__sync_and_and_fetch(AI+14, 7) != 7)
++ abort ();
++ if (__sync_or_and_fetch(AI+15, 8) != 8)
++ abort ();
++ if (__sync_xor_and_fetch(AI+16, 9) != 9)
++ abort ();
++ if (__sync_nand_and_fetch(AI+17, 7) != 7)
++ abort ();
++}
++
++static short AL[18];
++static short init_hi[18] = { 3,5,7,9,0,0,0,0,-1,0,0,0,0,0,-1,0,0,0 };
++static short test_hi[18] = { 3,5,7,9,1,4,22,-12,7,8,9,7,1,-12,7,8,9,7 };
++
++static void
++do_hi (void)
++{
++ if (__sync_fetch_and_add(AL+4, 1) != 0)
++ abort ();
++ if (__sync_fetch_and_add(AL+5, 4) != 0)
++ abort ();
++ if (__sync_fetch_and_add(AL+6, 22) != 0)
++ abort ();
++ if (__sync_fetch_and_sub(AL+7, 12) != 0)
++ abort ();
++ if (__sync_fetch_and_and(AL+8, 7) != -1)
++ abort ();
++ if (__sync_fetch_and_or(AL+9, 8) != 0)
++ abort ();
++ if (__sync_fetch_and_xor(AL+10, 9) != 0)
++ abort ();
++ if (__sync_fetch_and_nand(AL+11, 7) != 0)
++ abort ();
++
++ if (__sync_add_and_fetch(AL+12, 1) != 1)
++ abort ();
++ if (__sync_sub_and_fetch(AL+13, 12) != -12)
++ abort ();
++ if (__sync_and_and_fetch(AL+14, 7) != 7)
++ abort ();
++ if (__sync_or_and_fetch(AL+15, 8) != 8)
++ abort ();
++ if (__sync_xor_and_fetch(AL+16, 9) != 9)
++ abort ();
++ if (__sync_nand_and_fetch(AL+17, 7) != 7)
++ abort ();
++}
++
++static void *
++start1 (void *arg)
++{
++ unsigned loop;
++ sleep(1);
++
++ for (loop = 0; loop < LOOPS; loop++)
++ {
++ memcpy(AI, init_qi, sizeof(init_qi));
++
++ do_qi ();
++
++ if (memcmp (AI, test_qi, sizeof(test_qi)))
++ abort ();
++ }
++
++ return arg; /* _delete1_ */
++}
++
++static void *
++start2 (void *arg)
++{
++ unsigned loop;
++
++ for (loop = 0; loop < LOOPS; loop++)
++ {
++ memcpy(AL, init_hi, sizeof(init_hi));
++
++ do_hi ();
++
++ if (memcmp (AL, test_hi, sizeof(test_hi)))
++ abort ();
++ }
++
++ return arg; /* _delete2_ */
++}
++
++int
++main (int argc, char **argv)
++{
++ pthread_t thread;
++ int i;
++
++ i = pthread_create (&thread, NULL, start1, NULL); /* _create_ */
++ assert (i == 0); /* _create_after_ */
++
++ sleep (1);
++
++ start2 (NULL);
++
++ i = pthread_join (thread, NULL); /* _delete_ */
++ assert (i == 0);
++
++ return 0; /* _exit_ */
++}
+Index: gdb-6.8.50.20081128/gdb/testsuite/gdb.threads/atomic-seq-threaded.exp
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ gdb-6.8.50.20081128/gdb/testsuite/gdb.threads/atomic-seq-threaded.exp 2008-12-08 22:31:01.000000000 +0100
+@@ -0,0 +1,84 @@
++# atomic-seq-threaded.exp -- Test case for stepping over RISC atomic code seqs.
++# This variant testcases the code for stepping another thread while skipping
++# over the atomic sequence in the former thread
++# (STEPPING_PAST_SINGLESTEP_BREAKPOINT).
++# Copyright (C) 2007 Free Software Foundation, Inc.
++
++# This program is free software; you can redistribute it and/or modify
++# it under the terms of the GNU General Public License as published by
++# the Free Software Foundation; either version 2 of the License, or
++# (at your option) any later version.
++#
++# This program is distributed in the hope that it will be useful,
++# but WITHOUT ANY WARRANTY; without even the implied warranty of
++# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++# GNU General Public License for more details.
++#
++# You should have received a copy of the GNU General Public License
++# along with this program; if not, write to the Free Software
++# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
++
++# Please email any bugs, comments, and/or additions to this file to:
++# bug-gdb@prep.ai.mit.edu
++
++set testfile atomic-seq-threaded
++set srcfile ${testfile}.c
++set binfile ${objdir}/${subdir}/${testfile}
++
++foreach opts {{} {compiler=gcc4} {FAIL}} {
++ if {$opts eq "FAIL"} {
++ return -1
++ }
++ if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug $opts]] eq "" } {
++ break
++ }
++}
++
++gdb_exit
++gdb_start
++gdb_reinitialize_dir $srcdir/$subdir
++
++gdb_load ${binfile}
++if ![runto_main] then {
++ fail "Can't run to main"
++ return 0
++}
++
++# pthread_create () will not pass even on x86_64 with software watchpoint.
++# Pass after pthread_create () without any watchpoint active.
++set line [gdb_get_line_number "_create_after_"]
++gdb_test "tbreak $line" \
++ "reakpoint (\[0-9\]+) at .*$srcfile, line $line\..*" \
++ "set breakpoint after pthread_create ()"
++gdb_test "c" \
++ ".*/\\* _create_after_ \\*/.*" \
++ "run till after pthread_create ()"
++
++# Without a watchpoint being software no single-stepping would be used.
++set test "Start (software) watchpoint"
++gdb_test_multiple "watch unused" $test {
++ -re "Watchpoint \[0-9\]+: unused.*$gdb_prompt $" {
++ pass $test
++ }
++ -re "Hardware watchpoint \[0-9\]+: unused.*$gdb_prompt $" {
++ # We do not test the goal but still the whole testcase should pass.
++ unsupported $test
++ }
++}
++
++# More thorough testing of the scheduling logic.
++gdb_test "set scheduler-locking step" ""
++
++# Critical code path is stepped through at this point.
++set line [gdb_get_line_number "_exit_"]
++gdb_test "tbreak $line" \
++ "reakpoint \[0-9\]+ at .*$srcfile, line $line\..*" \
++ "set breakpoint at _exit_"
++gdb_test "c" \
++ ".*/\\* _exit_ \\*/.*" \
++ "run till _exit_"
++
++# Just a nonproblematic program exit.
++gdb_test "c" \
++ ".*Program exited normally\\..*" \
++ "run till program exit"
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