Signed-off-by: Cyril Bur <cyril...@gmail.com>
---
 tools/testing/selftests/powerpc/Makefile           |   1 +
 tools/testing/selftests/powerpc/signal/Makefile    |  12 +++
 tools/testing/selftests/powerpc/signal/signal.S    |  50 ++++++++++
 tools/testing/selftests/powerpc/signal/signal.c    | 111 +++++++++++++++++++++
 tools/testing/selftests/powerpc/signal/signal_tm.c | 110 ++++++++++++++++++++
 5 files changed, 284 insertions(+)
 create mode 100644 tools/testing/selftests/powerpc/signal/Makefile
 create mode 100644 tools/testing/selftests/powerpc/signal/signal.S
 create mode 100644 tools/testing/selftests/powerpc/signal/signal.c
 create mode 100644 tools/testing/selftests/powerpc/signal/signal_tm.c

diff --git a/tools/testing/selftests/powerpc/Makefile 
b/tools/testing/selftests/powerpc/Makefile
index 1cc6d64..db54a33 100644
--- a/tools/testing/selftests/powerpc/Makefile
+++ b/tools/testing/selftests/powerpc/Makefile
@@ -19,6 +19,7 @@ SUB_DIRS = alignment          \
           dscr                 \
           mm                   \
           pmu                  \
+          signal               \
           primitives           \
           stringloops          \
           switch_endian        \
diff --git a/tools/testing/selftests/powerpc/signal/Makefile 
b/tools/testing/selftests/powerpc/signal/Makefile
new file mode 100644
index 0000000..97944cf
--- /dev/null
+++ b/tools/testing/selftests/powerpc/signal/Makefile
@@ -0,0 +1,12 @@
+TEST_PROGS := signal signal_tm
+
+all: $(TEST_PROGS)
+
+$(TEST_PROGS): ../harness.c ../utils.c signal.S
+
+signal_tm: CFLAGS += -mhtm
+
+include ../../lib.mk
+
+clean:
+       rm -f $(TEST_PROGS) *.o
diff --git a/tools/testing/selftests/powerpc/signal/signal.S 
b/tools/testing/selftests/powerpc/signal/signal.S
new file mode 100644
index 0000000..7043d52
--- /dev/null
+++ b/tools/testing/selftests/powerpc/signal/signal.S
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2015, Cyril Bur, IBM Corp.
+ *
+ * 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.
+ */
+
+#include "../basic_asm.h"
+
+/* long signal_self(pid_t pid, int sig); */
+FUNC_START(signal_self)
+       li      r0,37 /* sys_kill */
+       /* r3 already has our pid in it */
+       /* r4 already has signal type in it */
+       sc
+       bc      4,3,1f
+       subfze  r3,r3
+1:     blr
+FUNC_END(signal_self)
+
+/* long tm_signal_self(pid_t pid, int sig, int *ret); */
+FUNC_START(tm_signal_self)
+       PUSH_BASIC_STACK(8)
+       std     r5,STACK_FRAME_PARAM(0)(sp) /* ret */
+       tbegin.
+       beq     1f
+       tsuspend.
+       li      r0,37 /* sys_kill */
+       /* r3 already has our pid in it */
+       /* r4 already has signal type in it */
+       sc
+       ld      r5,STACK_FRAME_PARAM(0)(sp) /* ret */
+       bc      4,3,2f
+       subfze  r3,r3
+2:     std     r3,0(r5)
+       tabort. 0
+       tresume. /* Be nice to some cleanup, jumps back to tbegin then to 1: */
+       /*
+        * Transaction should be proper doomed and we should never get
+        * here
+        */
+       li      r3,1
+       POP_BASIC_STACK(8)
+       blr
+1:     li      r3,0
+       POP_BASIC_STACK(8)
+       blr
+FUNC_END(tm_signal_self)
diff --git a/tools/testing/selftests/powerpc/signal/signal.c 
b/tools/testing/selftests/powerpc/signal/signal.c
new file mode 100644
index 0000000..e7dedd2
--- /dev/null
+++ b/tools/testing/selftests/powerpc/signal/signal.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright 2016, Cyril Bur, IBM Corp.
+ *
+ * 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.
+ *
+ * Sending one self a signal should always get delivered.
+ */
+
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include <altivec.h>
+
+#include "utils.h"
+
+#define MAX_ATTEMPT 500000
+#define TIMEOUT 5
+
+extern long signal_self(pid_t pid, int sig);
+
+static sig_atomic_t signaled;
+static sig_atomic_t fail;
+
+static void signal_handler(int sig)
+{
+       if (sig == SIGUSR1)
+               signaled = 1;
+       else
+               fail = 1;
+}
+
+static int test_signal()
+{
+       int i;
+       struct sigaction act;
+       pid_t ppid = getpid();
+       pid_t pid;
+
+       act.sa_handler = signal_handler;
+       act.sa_flags = 0;
+       sigemptyset(&act.sa_mask);
+       if (sigaction(SIGUSR1, &act, NULL) < 0) {
+               perror("sigaction SIGUSR1");
+               exit(1);
+       }
+       if (sigaction(SIGALRM, &act, NULL) < 0) {
+               perror("sigaction SIGALRM");
+               exit(1);
+       }
+
+       /* Don't do this for MAX_ATTEMPT, its simply too long */
+       for(i  = 0; i < 1000; i++) {
+               pid = fork();
+               if (pid == -1) {
+                       perror("fork");
+                       exit(1);
+               }
+               if (pid == 0) {
+                       signal_self(ppid, SIGUSR1);
+                       exit(1);
+               } else {
+                       alarm(0); /* Disable any pending */
+                       alarm(2);
+                       while (!signaled && !fail)
+                               asm volatile("": : :"memory");
+                       if (!signaled) {
+                               fprintf(stderr, "Didn't get signal from 
child\n");
+                               FAIL_IF(1); /* For the line number */
+                       }
+                       /* Otherwise we'll loop too fast and fork() will 
eventually fail */
+                       waitpid(pid, NULL, 0);
+               }
+       }
+
+       for (i = 0; i < MAX_ATTEMPT; i++) {
+               long rc;
+
+               alarm(0); /* Disable any pending */
+               signaled = 0;
+               alarm(TIMEOUT);
+               rc = signal_self(ppid, SIGUSR1);
+               if (rc) {
+                       fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx",
+                                       i, fail, rc);
+                       FAIL_IF(1); /* For the line number */
+               }
+               while (!signaled && !fail)
+                       asm volatile("": : :"memory");
+               if (!signaled) {
+                       fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx",
+                                       i, fail, rc);
+                       FAIL_IF(1); /* For the line number */
+               }
+       }
+
+       return 0;
+}
+
+int main(void)
+{
+       test_harness_set_timeout(300);
+       return test_harness(test_signal, "signal");
+}
diff --git a/tools/testing/selftests/powerpc/signal/signal_tm.c 
b/tools/testing/selftests/powerpc/signal/signal_tm.c
new file mode 100644
index 0000000..2e7451a
--- /dev/null
+++ b/tools/testing/selftests/powerpc/signal/signal_tm.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2016, Cyril Bur, IBM Corp.
+ *
+ * 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.
+ *
+ * Sending one self a signal should always get delivered.
+ */
+
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include <altivec.h>
+
+#include "utils.h"
+#include "../tm/tm.h"
+
+#define MAX_ATTEMPT 500000
+#define TIMEOUT 10
+
+extern long tm_signal_self(pid_t pid, int sig, long *ret);
+
+static sig_atomic_t signaled;
+static sig_atomic_t fail;
+
+static void signal_handler(int sig)
+{
+       if (tcheck_active()) {
+               fail = 2;
+               return;
+       }
+
+       if (sig == SIGUSR1)
+               signaled = 1;
+       else
+               fail = 1;
+}
+
+static int test_signal_tm()
+{
+       int i;
+       struct sigaction act;
+
+       act.sa_handler = signal_handler;
+       act.sa_flags = 0;
+       sigemptyset(&act.sa_mask);
+       if (sigaction(SIGUSR1, &act, NULL) < 0) {
+               perror("sigaction SIGUSR1");
+               exit(1);
+       }
+       if (sigaction(SIGALRM, &act, NULL) < 0) {
+               perror("sigaction SIGALRM");
+               exit(1);
+       }
+
+       SKIP_IF(!have_htm());
+
+       for (i = 0; i < MAX_ATTEMPT; i++) {
+               /*
+                * If anything bad happens in ASM and we fail to set ret
+                * because *handwave* TM this will cause failure
+                */
+               long ret = 0xdead;
+               long rc = 0xbeef;
+
+               alarm(0); /* Disable any pending */
+               signaled = 0;
+               alarm(TIMEOUT);
+               FAIL_IF(tcheck_transactional());
+               rc = tm_signal_self(getpid(), SIGUSR1, &ret);
+               if (ret == 0xdead)
+                       /*
+                        * This basically means the transaction aborted before 
we
+                        * even got to the suspend... this is crazy but it
+                        * happens.
+                        * Yes this also means we might never make forward
+                        * progress... the alarm() will trip eventually...
+                        */
+                       continue;
+
+               if (rc || ret) {
+                       /* Ret is actually an errno */
+                       printf("TEXASR 0x%016lx, TFIAR 0x%016lx\n",
+                                       __builtin_get_texasr(), 
__builtin_get_tfiar());
+                       fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx 
ret=0x%lx\n",
+                                       i, fail, rc, ret);
+                       FAIL_IF(ret);
+               }
+               while(!signaled && !fail)
+                       asm volatile("": : :"memory");
+               if (!signaled) {
+                       fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx 
ret=0x%lx\n",
+                                       i, fail, rc, ret);
+                       FAIL_IF(fail); /* For the line number */
+               }
+       }
+
+       return 0;
+}
+
+int main(void)
+{
+       return test_harness(test_signal_tm, "signal_tm");
+}
-- 
2.10.0

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