patches/glibc/2.7/270-sh-fix-procfs.patch
author Anthony Foiani <anthony.foiani@gmail.com>
Thu May 19 23:06:16 2011 +0200 (2011-05-19)
changeset 2461 ec30b191f0e3
parent 962 2ba4393e0441
permissions -rw-r--r--
complibs/ppl: build only C and C++ interfaces for PPL

By default, PPL wants to build interfaces for any of a variety of
langauges it finds on the local host (python, java, possibly perl, also
more esoteric languages such as ocaml and prolog).

These extra interfaces can double the compile time for the library. For
single-process builds, I found a savings of more than 40%:

default / j1: 716s total, 143.2s avg, 0.52s stdev
just_c / j1: 406s total, 81.2s avg, 0.33s stdev
just_c_cpp / j1: 413s total, 82.6s avg, 0.22s stdev

And for multi-process builds, it approached 50%:

default / j4: 625s total, 125.0s avg, 0.57s stdev
just_c / j4: 338s total, 67.6s avg, 1.25s stdev
just_c_cpp / j4: 327s total, 65.4s avg, 0.36s stdev

Since the PPL we build within ct-ng is only used by GCC, we only need to
build the C and C++ interfaces.

Signed-Off-By: Anthony Foiani <anthony.foiani@gmail.com>
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diff -durN glibc-2.7.orig/sysdeps/unix/sysv/linux/sh/sys/procfs.h glibc-2.7/sysdeps/unix/sysv/linux/sh/sys/procfs.h
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--- glibc-2.7.orig/sysdeps/unix/sysv/linux/sh/sys/procfs.h	2004-11-20 18:56:16.000000000 +0100
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+++ glibc-2.7/sysdeps/unix/sysv/linux/sh/sys/procfs.h	2008-10-24 11:21:15.000000000 +0200
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@@ -29,10 +29,32 @@
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 #include <sys/types.h>
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 #include <sys/ucontext.h>
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 #include <sys/user.h>
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-#include <asm/elf.h>
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 __BEGIN_DECLS
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+/* BEGIN - UGLY HACK - YEM
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+ * These definitions are copied from the Alpha file,
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+ * and the register numbers are set accordingly to
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+ * what I could find in the Linux kernel sources
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+ * Highly dubious !!!!
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+ * BIG FAT WARNING !!!
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+ */
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+
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+/* Linux kernel says 16 (standards?) registers */
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+#define ELF_NGREG  16
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+/* Linux kernel says 16 floating point registers */
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+#define ELF_NFPREG 16
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+
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+/* Copied from Alpha as is */
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+typedef unsigned long elf_greg_t;
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+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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+
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+/* Ditto */
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+typedef double elf_fpreg_t;
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+typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
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+
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+/* END - UGLY HACK - YEM */
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+
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 struct elf_siginfo
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   {
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     int si_signo;			/* Signal number.  */