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[PATCH] s390: implement sotruss support
- From: Mike Frysinger <vapier at gentoo dot org>
- To: libc-alpha at sourceware dot org
- Date: Tue, 24 Dec 2013 04:33:27 -0500
- Subject: [PATCH] s390: implement sotruss support
- Authentication-results: sourceware.org; auth=none
See commit 41b1792698a335d3a85381921a84a16e9635f36a for testcase.
Note: while this works on s390x, the s390 code hangs when using -e.
But it hangs regardless of this code (the hang seems to occur before
the exit func is even called). I didn't look too closely at it as
it seems to be an issue external to this file, so this code shouldn't
make the situation any worse.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-12-24 Mike Frysinger <vapier@gentoo.org>
* sysdeps/s390/sotruss-lib.c: New file.
---
sysdeps/s390/sotruss-lib.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 62 insertions(+)
create mode 100644 sysdeps/s390/sotruss-lib.c
diff --git a/sysdeps/s390/sotruss-lib.c b/sysdeps/s390/sotruss-lib.c
new file mode 100644
index 0000000..bd7f456
--- /dev/null
+++ b/sysdeps/s390/sotruss-lib.c
@@ -0,0 +1,62 @@
+/* Override generic sotruss-lib.c to define actual functions for s390.
+ Copyright (C) 2012-2013 Free Software Foundation, Inc.
+
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#define HAVE_ARCH_PLTENTER
+#define HAVE_ARCH_PLTEXIT
+
+#include <elf/sotruss-lib.c>
+
+#if __ELF_NATIVE_CLASS == 32
+# define la_s390_gnu_pltenter la_s390_32_gnu_pltenter
+# define la_s390_gnu_pltexit la_s390_32_gnu_pltexit
+# define La_s390_regs La_s390_32_regs
+# define La_s390_retval La_s390_32_retval
+#else
+# define la_s390_gnu_pltenter la_s390_64_gnu_pltenter
+# define la_s390_gnu_pltexit la_s390_64_gnu_pltexit
+# define La_s390_regs La_s390_64_regs
+# define La_s390_retval La_s390_64_retval
+#endif
+
+ElfW(Addr)
+la_s390_gnu_pltenter (ElfW(Sym) *sym,
+ unsigned int ndx __attribute__ ((unused)),
+ uintptr_t *refcook, uintptr_t *defcook,
+ La_s390_regs *regs, unsigned int *flags,
+ const char *symname, long int *framesizep)
+{
+ print_enter (refcook, defcook, symname,
+ regs->lr_r2, regs->lr_r3, regs->lr_r4, *flags);
+
+ /* No need to copy anything, we will not need the parameters in any case. */
+ *framesizep = 0;
+
+ return sym->st_value;
+}
+
+unsigned int
+la_s390_gnu_pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
+ uintptr_t *defcook,
+ const struct La_s390_regs *inregs,
+ struct La_s390_retval *outregs, const char *symname)
+{
+ print_exit (refcook, defcook, symname, outregs->lrv_r2);
+
+ return 0;
+}
--
1.8.4.3