From: Andreas Arnez <arnez@linux.ibm.com>
Date: Wed, 5 Jan 2022 18:49:19 +0000 (+0100)
Subject: Bug 444552 - s390x: Fix sys_ipc semtimedop syscall
X-Git-Tag: VALGRIND_3_19_0~28
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=03a8b24ae362f13c7f97746f72f40240aeb5aade;p=thirdparty%2Fvalgrind.git

Bug 444552 - s390x: Fix sys_ipc semtimedop syscall

On s390x Linux platforms the sys_ipc semtimedop call has four instead of
five parameters, where the timeout is passed in the third instead of the
fifth.

Reflect this difference in the handling of VKI_SEMTIMEDOP.
---

diff --git a/NEWS b/NEWS
index 3151e560ed..e4f2b71411 100644
--- a/NEWS
+++ b/NEWS
@@ -46,6 +46,7 @@ are not entered into bugzilla tend to get forgotten about or ignored.
         == 434283
 444481  gdb_server test failures on s390x
 444495  dhat/tests/copy fails on s390x
+444552  memcheck/tests/sem fails on s390x with glibc 2.34
 444571  PPC, fix the lxsibzx and lxsihzx so they only load their respective
         sized data.
 444836  PPC, pstq instruction for R=1 is not storing to the correct address.
diff --git a/coregrind/m_syswrap/syswrap-linux.c b/coregrind/m_syswrap/syswrap-linux.c
index 792589766b..b9d531de38 100644
--- a/coregrind/m_syswrap/syswrap-linux.c
+++ b/coregrind/m_syswrap/syswrap-linux.c
@@ -4774,10 +4774,20 @@ PRE(sys_ipc)
       break;
    }
    case VKI_SEMTIMEDOP:
+#ifdef VGP_s390x_linux
+      /* On s390x Linux platforms the sys_ipc semtimedop call has four instead
+         of five parameters, where the timeout is passed in the third instead of
+         the fifth. */
+      PRE_REG_READ5(int, "ipc",
+                    vki_uint, call, int, first, int, second, long, third,
+                    void *, ptr);
+      ML_(generic_PRE_sys_semtimedop)( tid, ARG2, ARG5, ARG3, ARG4 );
+#else
       PRE_REG_READ6(int, "ipc",
                     vki_uint, call, int, first, int, second, int, third,
                     void *, ptr, long, fifth);
       ML_(generic_PRE_sys_semtimedop)( tid, ARG2, ARG5, ARG3, ARG6 );
+#endif
       *flags |= SfMayBlock;
       break;
    case VKI_MSGSND: