Add SPE extensions support for PowerPC (after a work by Thomas JOURDAN).

Add a PowerPC sample that supports SPE extensions.

 /trunk/arch/powerpc/functions                                    |   13    13     0     0 +
 /trunk/arch/powerpc/config.in                                    |    8     8     0     0 +
 /trunk/patches/gcc/4.3.1/340-make-mno-spe-work-as-expected.patch |   90    90     0     0 ++++
 /trunk/samples/powerpc-unknown-linux-gnuspe/crosstool.config     |  309   309     0     0 ++++++++++++++
 4 files changed, 420 insertions(+)

2 files changed, 21 insertions, 0 deletions

diff --git a/arch/powerpc/config.in b/arch/powerpc/config.in
index ad51f86..dc871a0 100644
--- a/arch/powerpc/config.in
+++ b/arch/powerpc/config.in
@@ -7,3 +7,11 @@ config ARCH_powerpc
     help
       The PowerPC architecture, as defined by:
         http://www.ibm.com/developerworks/eserver/articles/archguide.html
+
+config ARCH_POWERPC_SPE
+    bool
+    prompt "Enable SPE support (EXPERIMENTAL)"
+    depends on EXPERIMENTAL
+    default n
+    help
+      Add support for the Signal Processing Engine.
diff --git a/arch/powerpc/functions b/arch/powerpc/functions
index 9ad0304..94ad11c 100644
--- a/arch/powerpc/functions
+++ b/arch/powerpc/functions
@@ -6,4 +6,17 @@ CT_DoArchValues () {
 
     # The kernel ARCH:
     CT_KERNEL_ARCH=powerpc
+
+    # Add spe in the tuplet if needed
+    case "${CT_LIBC},${CT_ARCH_POWERPC_SPE}" in
+        glibc,|eglibc,)   CT_TARGET_SYS=gnu;;
+        glibc,y|eglibc,y) CT_TARGET_SYS=gnuspe;;
+    esac
+
+    # Add extra flags for SPE if needed
+    if [ "${CT_ARCH_POWERPC_SPE}" = "y" ]; then
+        CT_ARCH_TARGET_CFLAGS="-mabi=spe -mspe"
+        CT_ARCH_CC_CORE_EXTRA_CONFIG="--enable-e500_double"
+        CT_ARCH_CC_EXTRA_CONFIG="--enable-e500_double"
+    fi
 }