9 files changed, 43 insertions, 1 deletions
diff --git a/conf/distro/angstrom-2008.1.conf b/conf/distro/angstrom-2008.1.conf
index 7c70c84552..84e80968a8 100644
--- a/conf/distro/angstrom-2008.1.conf
+++ b/conf/distro/angstrom-2008.1.conf
@@ -136,6 +136,7 @@ PREFERRED_VERSION_binutils-cross-sdk_avr32 = "2.17"
 
 # Toolchain virtuals:
 require conf/distro/include/toolchain-${TOOLCHAIN_TYPE}.inc
+require conf/distro/include/arm-thumb.inc
 
 PREFERRED_PROVIDER_dbus-glib             = "dbus-glib"
 PREFERRED_PROVIDER_hotplug               = "udev"
diff --git a/conf/distro/gmustix.conf b/conf/distro/gmustix.conf
index 17f805617a..5dd519d90a 100644
--- a/conf/distro/gmustix.conf
+++ b/conf/distro/gmustix.conf
@@ -5,6 +5,8 @@
 INHERIT += "package_tar package_ipk"
 LIBC = "uclibc"
 require conf/distro/include/${LIBC}.inc
+require conf/distro/include/arm-thumb.inc
+
 TARGET_OS = "linux-uclibc"
 TARGET_FPU = "soft"
 IMAGE_FSTYPES = "jffs2"
diff --git a/conf/distro/include/arm-thumb.inc b/conf/distro/include/arm-thumb.inc
new file mode 100644
index 0000000000..cd88bb4786
--- /dev/null
+++ b/conf/distro/include/arm-thumb.inc
@@ -0,0 +1,32 @@
+#tune file for thumb instructions
+
+ARM_INSTRUCTION_SET ?= "arm"
+# "arm" "thumb"
+#    The instruction set the compiler should use when generating application
+#    code.  The kernel is always compiled with arm code at present.  arm code
+#    is the original 32 bit ARM instruction set, thumb code is the 16 bit
+#    encoded RISC sub-set.  Thumb code is smaller (maybe 70% of the ARM size)
+#    but requires more instructions (140% for 70% smaller code) so may be
+#    slower.
+
+THUMB_INTERWORK ?= "no"
+# "yes" "no"
+#    Whether to compile with code to allow interworking between the two
+#    instruction sets.  This allows thumb code to be executed on a primarily
+#    arm system and vice versa.  It is strongly recommended that DISTROs not
+#    turn this off - the actual cost is very small.
+
+OVERRIDE_THUMB = "${@['', ':thumb'][bb.data.getVar('ARM_INSTRUCTION_SET', d, 1) == 'thumb']}"
+OVERRIDE_INTERWORK = "${@['', ':thumb-interwork'][bb.data.getVar('THUMB_INTERWORK', d, 1) == 'yes']}"
+OVERRIDES .= "${OVERRIDE_THUMB}${OVERRIDE_INTERWORK}"
+
+#    Compiler and linker options for application code and kernel code.  These
+#    options ensure that the compiler has the correct settings for the selected
+#    instruction set and interworking.
+ARM_INTERWORK_M_OPT = "${@['-mno-thumb-interwork', '-mthumb-interwork'][bb.data.getVar('THUMB_INTERWORK', d, 1) == 'yes']}"
+ARM_THUMB_M_OPT = "${@['-mno-thumb', '-mthumb'][bb.data.getVar('ARM_INSTRUCTION_SET', d, 1) == 'thumb']}"
+
+#
+TARGET_CC_ARCH +=  "${ARM_INTERWORK_M_OPT} ${ARM_THUMB_M_OPT}"
+TARGET_CC_KERNEL_ARCH  += "-mno-thumb-interwork -mno-thumb"
+
diff --git a/conf/distro/kaeilos-2010.conf b/conf/distro/kaeilos-2010.conf
index 4bb637cfa6..ba374458f7 100644
--- a/conf/distro/kaeilos-2010.conf
+++ b/conf/distro/kaeilos-2010.conf
@@ -96,6 +96,7 @@ PREFERRED_VERSION_gcc-cross-intermediate ?= "${KAEILOS_GCC_VERSION}"
 
 PREFERRED_ARM_INSTRUCTION_SET ?= "thumb"
 require conf/distro/include/sane-toolchain.inc
+require conf/distro/include/arm-thumb.inc
 
 PREFERRED_PROVIDER_dbus-glib             = "dbus-glib"
 PREFERRED_PROVIDER_hotplug               = "udev"
diff --git a/conf/distro/kaeilos.conf b/conf/distro/kaeilos.conf
index eb12d2ed04..b1412805d1 100644
--- a/conf/distro/kaeilos.conf
+++ b/conf/distro/kaeilos.conf
@@ -124,6 +124,7 @@ PREFERRED_VERSION_binutils-cross-sdk_avr32 = "2.17"
 
 # Toolchain virtuals:
 require conf/distro/include/toolchain-${TOOLCHAIN_TYPE}.inc
+require conf/distro/include/arm-thumb.inc
 
 PREFERRED_PROVIDER_dbus-glib             = "dbus-glib"
 PREFERRED_PROVIDER_hotplug               = "udev"
diff --git a/conf/distro/micro.conf b/conf/distro/micro.conf
index 9885425979..fc50391f30 100644
--- a/conf/distro/micro.conf
+++ b/conf/distro/micro.conf
@@ -66,6 +66,7 @@ PREFERRED_VERSION_glibc             ?= "2.10.1"
 PREFERRED_VERSION_glibc-initial     ?= "2.10.1"
 PREFERRED_ARM_INSTRUCTION_SET ?= "thumb"
 require conf/distro/include/sane-toolchain.inc
+require conf/distro/include/arm-thumb.inc
 
 #############################################################################
 # OVERRIDES adjusted from bitbake.conf to feature the MACHINE_CLASS
diff --git a/conf/distro/minimal.conf b/conf/distro/minimal.conf
index e400c14d65..9a081309e1 100644
--- a/conf/distro/minimal.conf
+++ b/conf/distro/minimal.conf
@@ -16,7 +16,7 @@ DISTRO_VERSION = "dev-snapshot-${SRCDATE}"
 DISTRO_TYPE ?= "debug"
 
 # Ensure some form of release config, so error out if someone thinks he knows better
-DISTRO_CHECK := "${@bb.data.getVar('DISTRO_VERSION',d,1) or bb.fatal('Remove this line or set a dummy DISTRO_VERSION")
+DISTRO_CHECK := "${@bb.data.getVar('DISTRO_VERSION',d,1) or bb.fatal('Remove this line or set a dummy DISTRO_VERSION')}"
 
 #############################################################################
 # FEATURE SELECTION
@@ -86,6 +86,7 @@ MACHINE_KERNEL_VERSION = "2.6"
 #############################################################################
 LIBC ?= "eglibc"
 require conf/distro/include/sane-toolchain.inc
+require conf/distro/include/arm-thumb.inc
 
 #############################################################################
 # PREFERRED VERSIONS
diff --git a/conf/distro/shr.conf b/conf/distro/shr.conf
index f0167da3a8..9fd156fc1f 100644
--- a/conf/distro/shr.conf
+++ b/conf/distro/shr.conf
@@ -159,6 +159,7 @@ PREFERRED_VERSION_eglibc             ?= "2.12"
 PREFERRED_VERSION_eglibc-initial     ?= "2.12"
 PREFERRED_GCC_VERSION                ?= "4.5"
 require conf/distro/include/sane-toolchain.inc
+require conf/distro/include/arm-thumb.inc
 
 # Set some java bits
 require conf/distro/include/sane-toolchain-java.inc
diff --git a/conf/distro/slugos.conf b/conf/distro/slugos.conf
index 5a2f0dc620..5f9c06ca0b 100644
--- a/conf/distro/slugos.conf
+++ b/conf/distro/slugos.conf
@@ -22,3 +22,5 @@ require conf/distro/include/slugos.inc
 # Can be either glibc or eglibc (or perhaps even uclibc)
 LIBC ?= "eglibc"
 require conf/distro/include/${LIBC}.inc
+require conf/distro/include/arm-thumb.inc
+