Add sotruss-lib.c for MIPS

["Joseph S. Myers" <joseph at codesourcery dot com>]

I've applied this patch to add a version of sotruss-lib.c for MIPS.  This 
fixes four warnings building glibc for each MIPS ABI.

2012-11-21  Joseph Myers  <joseph@codesourcery.com>

	* sysdeps/mips/sotruss-lib.c: New file.

diff --git a/ports/sysdeps/mips/sotruss-lib.c b/ports/sysdeps/mips/sotruss-lib.c
new file mode 100644
index 0000000..6706be9
--- /dev/null
+++ b/ports/sysdeps/mips/sotruss-lib.c
@@ -0,0 +1,117 @@
+/* Override generic sotruss-lib.c to define actual functions for MIPS.
+   Copyright (C) 2012 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 _MIPS_SIM == _ABIO32
+
+ElfW(Addr)
+la_mips_o32_gnu_pltenter (ElfW(Sym) *sym __attribute__ ((unused)),
+			  unsigned int ndx __attribute__ ((unused)),
+			  uintptr_t *refcook, uintptr_t *defcook,
+			  La_mips_32_regs *regs, unsigned int *flags,
+			  const char *symname, long int *framesizep)
+{
+  print_enter (refcook, defcook, symname,
+	       regs->lr_reg[0], regs->lr_reg[1], regs->lr_reg[2],
+	       *flags);
+
+  /* No need to copy anything, we will not need the parameters in any case.  */
+  *framesizep = 0;
+
+  return sym->st_value;
+}
+
+unsigned int
+la_mips_o32_gnu_pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
+			 uintptr_t *defcook,
+			 const struct La_mips_32_regs *inregs,
+			 struct La_mips_32_retval *outregs,
+			 const char *symname)
+{
+  print_exit (refcook, defcook, symname, outregs->lrv_v0);
+
+  return 0;
+}
+
+#elif _MIPS_SIM == _ABIN32
+
+ElfW(Addr)
+la_mips_n32_gnu_pltenter (ElfW(Sym) *sym __attribute__ ((unused)),
+			  unsigned int ndx __attribute__ ((unused)),
+			  uintptr_t *refcook, uintptr_t *defcook,
+			  La_mips_64_regs *regs, unsigned int *flags,
+			  const char *symname, long int *framesizep)
+{
+  print_enter (refcook, defcook, symname,
+	       regs->lr_reg[0], regs->lr_reg[1], regs->lr_reg[2],
+	       *flags);
+
+  /* No need to copy anything, we will not need the parameters in any case.  */
+  *framesizep = 0;
+
+  return sym->st_value;
+}
+
+unsigned int
+la_mips_n32_gnu_pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
+			 uintptr_t *defcook,
+			 const struct La_mips_64_regs *inregs,
+			 struct La_mips_64_retval *outregs,
+			 const char *symname)
+{
+  print_exit (refcook, defcook, symname, outregs->lrv_v0);
+
+  return 0;
+}
+
+#else
+
+ElfW(Addr)
+la_mips_n64_gnu_pltenter (ElfW(Sym) *sym __attribute__ ((unused)),
+			  unsigned int ndx __attribute__ ((unused)),
+			  uintptr_t *refcook, uintptr_t *defcook,
+			  La_mips_64_regs *regs, unsigned int *flags,
+			  const char *symname, long int *framesizep)
+{
+  print_enter (refcook, defcook, symname,
+	       regs->lr_reg[0], regs->lr_reg[1], regs->lr_reg[2],
+	       *flags);
+
+  /* No need to copy anything, we will not need the parameters in any case.  */
+  *framesizep = 0;
+
+  return sym->st_value;
+}
+
+unsigned int
+la_mips_n64_gnu_pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
+			 uintptr_t *defcook,
+			 const struct La_mips_64_regs *inregs,
+			 struct La_mips_64_retval *outregs,
+			 const char *symname)
+{
+  print_exit (refcook, defcook, symname, outregs->lrv_v0);
+
+  return 0;
+}
+
+#endif

-- 
Joseph S. Myers
joseph@codesourcery.com