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commit 7a02cfade80b2b6ed2562e74105bebfee90a87ec
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Author: Mike Frysinger <vapier@gentoo.org>
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Date: Tue Dec 24 04:31:22 2013 -0500
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s390: implement sotruss support
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See commit 41b1792698a335d3a85381921a84a16e9635f36a for testcase.
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Note: while this works on s390x, the s390 code hangs when using -e.
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But it hangs regardless of this code (the hang seems to occur before
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the exit func is even called). I didn't look too closely at it as
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it seems to be an issue external to this file, so this code shouldn't
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make the situation any worse.
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Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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diff --git a/sysdeps/s390/sotruss-lib.c b/sysdeps/s390/sotruss-lib.c
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new file mode 100644
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index 0000000000000000..ded98db08dcf525b
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--- /dev/null
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+++ b/sysdeps/s390/sotruss-lib.c
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@@ -0,0 +1,62 @@
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+/* Override generic sotruss-lib.c to define actual functions for s390.
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+ Copyright (C) 2012-2014 Free Software Foundation, Inc.
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+
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library. If not, see
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+ <http://www.gnu.org/licenses/>. */
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+
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+#define HAVE_ARCH_PLTENTER
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+#define HAVE_ARCH_PLTEXIT
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+
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+#include <elf/sotruss-lib.c>
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+
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+#if __ELF_NATIVE_CLASS == 32
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+# define la_s390_gnu_pltenter la_s390_32_gnu_pltenter
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+# define la_s390_gnu_pltexit la_s390_32_gnu_pltexit
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+# define La_s390_regs La_s390_32_regs
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+# define La_s390_retval La_s390_32_retval
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+#else
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+# define la_s390_gnu_pltenter la_s390_64_gnu_pltenter
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+# define la_s390_gnu_pltexit la_s390_64_gnu_pltexit
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+# define La_s390_regs La_s390_64_regs
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+# define La_s390_retval La_s390_64_retval
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+#endif
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+
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+ElfW(Addr)
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+la_s390_gnu_pltenter (ElfW(Sym) *sym,
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+ unsigned int ndx __attribute__ ((unused)),
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+ uintptr_t *refcook, uintptr_t *defcook,
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+ La_s390_regs *regs, unsigned int *flags,
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+ const char *symname, long int *framesizep)
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+{
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+ print_enter (refcook, defcook, symname,
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+ regs->lr_r2, regs->lr_r3, regs->lr_r4, *flags);
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+
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+ /* No need to copy anything, we will not need the parameters in any case. */
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+ *framesizep = 0;
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+
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+ return sym->st_value;
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+}
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+
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+unsigned int
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+la_s390_gnu_pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
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+ uintptr_t *defcook,
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+ const struct La_s390_regs *inregs,
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+ struct La_s390_retval *outregs, const char *symname)
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+{
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+ print_exit (refcook, defcook, symname, outregs->lrv_r2);
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+
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+ return 0;
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+}
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