Re: Architectures status 2012-12-18

[Andreas Schwab <schwab@linux-m68k.org>]

"Joseph S. Myers" <joseph@codesourcery.com> writes:

> * PowerPC:
>
>   (a) PowerPC needs sotruss-lib.c support.

	* sysdeps/powerpc/sotruss-lib.c: New file.
---
 sysdeps/powerpc/sotruss-lib.c | 84 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 sysdeps/powerpc/sotruss-lib.c

diff --git a/sysdeps/powerpc/sotruss-lib.c b/sysdeps/powerpc/sotruss-lib.c
new file mode 100644
index 0000000..a1d738c
--- /dev/null
+++ b/sysdeps/powerpc/sotruss-lib.c
@@ -0,0 +1,84 @@
+/* Override generic sotruss-lib.c to define actual functions for powerpc.
+   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 __ELF_NATIVE_CLASS == 32
+
+ElfW(Addr)
+la_ppc32_gnu_pltenter (Elf32_Sym *sym __attribute__ ((unused)),
+		       unsigned int ndx __attribute__ ((unused)),
+		       uintptr_t *refcook, uintptr_t *defcook,
+		       La_ppc32_regs *regs, unsigned int *flags,
+		       const char *symname, long int *framesizep)
+{
+  print_enter (refcook, defcook, symname,
+	       regs->lr_reg[3], regs->lr_reg[4], regs->lr_reg[5], *flags);
+
+  /* No need to copy anything, we will not need the parameters in any case.  */
+  *framesizep = 0;
+
+  return sym->st_value;
+}
+
+unsigned int
+la_ppc32_gnu_pltexit (Elf32_Sym *sym, unsigned int ndx, uintptr_t *refcook,
+		      uintptr_t *defcook,
+		      const struct La_ppc32_regs *inregs,
+		      struct La_ppc32_retval *outregs,
+		      const char *symname)
+{
+  print_exit (refcook, defcook, symname, outregs->lrv_r3);
+
+  return 0;
+}
+
+#else
+
+ElfW(Addr)
+la_ppc64_gnu_pltenter (Elf64_Sym *sym __attribute__ ((unused)),
+		       unsigned int ndx __attribute__ ((unused)),
+		       uintptr_t *refcook, uintptr_t *defcook,
+		       La_ppc64_regs *regs, unsigned int *flags,
+		       const char *symname, long int *framesizep)
+{
+  print_enter (refcook, defcook, symname,
+	       regs->lr_reg[3], regs->lr_reg[4], regs->lr_reg[5], *flags);
+
+  /* No need to copy anything, we will not need the parameters in any case.  */
+  *framesizep = 0;
+
+  return sym->st_value;
+}
+
+unsigned int
+la_ppc64_gnu_pltexit (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
+		      uintptr_t *defcook,
+		      const struct La_ppc64_regs *inregs,
+		      struct La_ppc64_retval *outregs,
+		      const char *symname)
+{
+  print_exit (refcook, defcook, symname, outregs->lrv_r3);
+
+  return 0;
+}
+
+#endif


> * m68k:
>
>   (a) May need updates to its ccos / csin / ccosh / csinh
>   implementations along the lines of my 2012-05-19 libc changes to
>   avoid spurious overflows (bug 14123).

It also needs its pow implementation rewritten from scratch.  Patches
welcome.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."