[Buildroot] [PATCH v3 00/11] ARC port

[Buildroot] [PATCH v3 00/11] ARC port

[Mischa Jonker]

Hi all,

Now that 3.9 has been released, ARC doesn't depend on its own kernel anymore.
This is reflected in the patch set, furthermore, bison/flex host dependencies
have been removed (thanks to Thomas for his input).

The GCC version architecture dependency cleanup patch is not really related to
ARC, and I will come with a proposal as a separate patch.

The patch set is also published on our github site: 
https://github.com/foss-for-synopsys-dwc-arc-processors/buildroot

Changes in v3:
 * removed GCC arch-dependency cleanup patch (should be discussed separately)
 * 3.9-rc8-->3.9 kernel headers
 * Added bison/flex host dependencies

Changes in v2:
 * BR2_ARC_SITE hardcoded now, and moved to Config.in.arc
 * makeinfo dependency removed from binutils
 * Added 3.9-rc8 kernel headers
 * Patches split where suggested
 * Removed ARC-specific uClibc config
 * Moved ARC-specific binutils out of the choice menu
 * Introduced explicit BR2_arcel, BR2_arceb symbols a la microblaze
 * Added a patch that cleans up GCC architecture dependencies
 * Fixed patches for binutils, gcc

Mischa Jonker (11):
  arc: Add ARC and ARC BE architecture
  arc: Add option for ARC-specific download site
  arc: Add support for ARC-specific binutils
  arc: disable Crosstool-NG for ARC
  arc: add gcc for ARC
  arc: Add support for ARC-specific uClibc
  arc: Make sure that libgcc doesn't get included when it doesn't exist
    yet
  toolchain/gcc: Only enable --with-float when it makes sense
  toolchain/toolchain-buildroot: Disable NPTL for ARC
  arc: Add arc, arcbe to gnuconfig
  kernel-headers: Add support for ARC kernel headers

 Makefile                                           |    1 +
 arch/Config.in                                     |   18 +++++
 arch/Config.in.arc                                 |   18 +++++
 .../binutils/2.19-arc/add-empty-info-files.patch   |   72 ++++++++++++++++++++
 package/binutils/Config.in.host                    |    2 +
 package/binutils/binutils.mk                       |    7 ++
 support/gnuconfig/config.sub                       |    4 +-
 toolchain/Config.in                                |    2 +-
 .../gcc/4.4.7-arc/fix_branch_out_of_range.patch    |   30 ++++++++
 toolchain/gcc/Config.in                            |   22 ++++--
 toolchain/gcc/gcc-uclibc-4.x.mk                    |    5 ++
 toolchain/kernel-headers/Config.in                 |   14 +++--
 toolchain/toolchain-buildroot/Config.in.2          |    1 +
 toolchain/uClibc/Config.in                         |   10 ++-
 toolchain/uClibc/uClibc-snapshot.config            |    2 +
 toolchain/uClibc/uclibc.mk                         |   19 +++++-
 16 files changed, 207 insertions(+), 20 deletions(-)
 create mode 100644 arch/Config.in.arc
 create mode 100644 package/binutils/2.19-arc/add-empty-info-files.patch
 create mode 100644 toolchain/gcc/4.4.7-arc/fix_branch_out_of_range.patch

[Buildroot] [PATCH v3 01/11] arc: Add ARC and ARC BE architecture

[Mischa Jonker]

Synopsys' DesignWare ARC Processor Cores are a family of 32-bit CPUs that
can be used from deeply embedded to high performance host applications.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 arch/Config.in     |   18 ++++++++++++++++++
 arch/Config.in.arc |   14 ++++++++++++++
 2 files changed, 32 insertions(+), 0 deletions(-)
 create mode 100644 arch/Config.in.arc

diff --git a/arch/Config.in b/arch/Config.in
index 795f24f..2006f1e 100644
--- a/arch/Config.in
+++ b/arch/Config.in
@@ -7,6 +7,20 @@ choice
 	help
 	  Select the target architecture family to build for.
 
+config BR2_arcle
+	bool "ARC (little endian)"
+	help
+	  Synopsys' DesignWare ARC Processor Cores are a family of 32-bit CPUs
+	  that can be used from deeply embedded to high performance host
+	  applications. Little endian.
+
+config BR2_arceb
+	bool "ARC (big endian)"
+	help
+	  Synopsys' DesignWare ARC Processor Cores are a family of 32-bit CPUs
+	  that can be used from deeply embedded to high performance host
+	  applications. Big endian.
+
 config BR2_arm
 	bool "ARM (little endian)"
 	help
@@ -175,6 +189,10 @@ config BR2_GCC_TARGET_ABI
 config BR2_GCC_TARGET_CPU
 	string
 
+if BR2_arcle || BR2_arceb
+source "arch/Config.in.arc"
+endif
+
 if BR2_arm || BR2_armeb
 source "arch/Config.in.arm"
 endif
diff --git a/arch/Config.in.arc b/arch/Config.in.arc
new file mode 100644
index 0000000..60b59f0
--- /dev/null
+++ b/arch/Config.in.arc
@@ -0,0 +1,14 @@
+config BR2_ARCH
+	default "arc"	if BR2_arcle
+	default "arceb"	if BR2_arceb
+
+config BR2_arc
+	bool
+	default y if BR2_arcle || BR2_arceb
+
+config BR2_ENDIAN
+	default "LITTLE" if BR2_arcle
+	default "BIG"	 if BR2_arceb
+
+config BR2_GCC_TARGET_CPU
+	default "arc700"
-- 
1.7.0.4

[Buildroot] [PATCH v3 02/11] arc: Add option for ARC-specific download site

[Mischa Jonker]

As ARC support is not yet in all upstream packages, a different location is
required to download the packages from. This adds an option to specify a
site for ARC-specific versions of packages such as binutils, gcc.

When ARC support has been upstreamed for all packages, this option can be
removed again.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 arch/Config.in.arc |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/Config.in.arc b/arch/Config.in.arc
index 60b59f0..9f68b46 100644
--- a/arch/Config.in.arc
+++ b/arch/Config.in.arc
@@ -12,3 +12,7 @@ config BR2_ENDIAN
 
 config BR2_GCC_TARGET_CPU
 	default "arc700"
+
+config BR2_ARC_SITE
+	string
+	default "http://www.synopsys.com/apps/arc-developer/"
-- 
1.7.0.4

[Buildroot] [PATCH v3 03/11] arc: Add support for ARC-specific binutils

[Mischa Jonker]

ARC support is not upstream yet...

package/binutils: add host-{flex,bison} dependencies for 2.19-arc

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 .../binutils/2.19-arc/add-empty-info-files.patch   |   72 ++++++++++++++++++++
 package/binutils/Config.in.host                    |    2 +
 package/binutils/binutils.mk                       |    7 ++
 3 files changed, 81 insertions(+), 0 deletions(-)
 create mode 100644 package/binutils/2.19-arc/add-empty-info-files.patch

diff --git a/package/binutils/2.19-arc/add-empty-info-files.patch b/package/binutils/2.19-arc/add-empty-info-files.patch
new file mode 100644
index 0000000..90de429
--- /dev/null
+++ b/package/binutils/2.19-arc/add-empty-info-files.patch
@@ -0,0 +1,72 @@
+binutils: add empty info files to remove makeinfo dependency
+
+Signed-off-by: Mischa jonker <mjonker@synopsys.com>
+---
+ bfd/doc/bfd.info           |    1 +
+ binutils/doc/binutils.info |    1 +
+ etc/configure.info         |    1 +
+ etc/standards.info         |    1 +
+ gas/doc/as.info            |    1 +
+ gprof/gprof.info           |    1 +
+ ld/ld.info                 |    1 +
+ 7 files changed, 7 insertions(+), 0 deletions(-)
+ create mode 100644 bfd/doc/bfd.info
+ create mode 100644 binutils/doc/binutils.info
+ create mode 100644 etc/configure.info
+ create mode 100644 etc/standards.info
+ create mode 100644 gas/doc/as.info
+ create mode 100644 gprof/gprof.info
+ create mode 100644 ld/ld.info
+
+diff --git a/bfd/doc/bfd.info b/bfd/doc/bfd.info
+new file mode 100644
+index 0000000..8b13789
+--- /dev/null
++++ b/bfd/doc/bfd.info
+@@ -0,0 +1 @@
++
+diff --git a/binutils/doc/binutils.info b/binutils/doc/binutils.info
+new file mode 100644
+index 0000000..8b13789
+--- /dev/null
++++ b/binutils/doc/binutils.info
+@@ -0,0 +1 @@
++
+diff --git a/etc/configure.info b/etc/configure.info
+new file mode 100644
+index 0000000..8b13789
+--- /dev/null
++++ b/etc/configure.info
+@@ -0,0 +1 @@
++
+diff --git a/etc/standards.info b/etc/standards.info
+new file mode 100644
+index 0000000..8b13789
+--- /dev/null
++++ b/etc/standards.info
+@@ -0,0 +1 @@
++
+diff --git a/gas/doc/as.info b/gas/doc/as.info
+new file mode 100644
+index 0000000..8b13789
+--- /dev/null
++++ b/gas/doc/as.info
+@@ -0,0 +1 @@
++
+diff --git a/gprof/gprof.info b/gprof/gprof.info
+new file mode 100644
+index 0000000..8b13789
+--- /dev/null
++++ b/gprof/gprof.info
+@@ -0,0 +1 @@
++
+diff --git a/ld/ld.info b/ld/ld.info
+new file mode 100644
+index 0000000..8b13789
+--- /dev/null
++++ b/ld/ld.info
+@@ -0,0 +1 @@
++
+-- 
+1.7.0.4
+
diff --git a/package/binutils/Config.in.host b/package/binutils/Config.in.host
index a61a503..d9bab44 100644
--- a/package/binutils/Config.in.host
+++ b/package/binutils/Config.in.host
@@ -2,6 +2,7 @@ comment "Binutils Options"
 
 choice
 	prompt "Binutils Version"
+	depends on !BR2_arc
 	default BR2_BINUTILS_VERSION_2_21 if (BR2_mips || BR2_mipsel || BR2_sh)
 	default BR2_BINUTILS_VERSION_2_21_1 if (!BR2_UCLIBC_VERSION_0_9_31)
 	default BR2_BINUTILS_VERSION_2_21
@@ -41,6 +42,7 @@ endchoice
 config BR2_BINUTILS_VERSION
 	string
 	default "2.18-avr32-1.0.1" if BR2_BINUTILS_VERSION_2_18_AVR32_1_0_1
+	default "2.19-arc"	if BR2_arc
 	default "2.20.1"	if BR2_BINUTILS_VERSION_2_20_1
 	default "2.21"		if BR2_BINUTILS_VERSION_2_21
 	default "2.21.1"	if BR2_BINUTILS_VERSION_2_21_1
diff --git a/package/binutils/binutils.mk b/package/binutils/binutils.mk
index 92e0a74..081be6a 100644
--- a/package/binutils/binutils.mk
+++ b/package/binutils/binutils.mk
@@ -26,6 +26,9 @@ BINUTILS_SITE = $(BR2_GNU_MIRROR)/binutils
 ifeq ($(ARCH),avr32)
 BINUTILS_SITE = ftp://www.at91.com/pub/buildroot
 endif
+ifeq ($(BR2_arc),y)
+BINUTILS_SITE = $(BR2_ARC_SITE)
+endif
 BINUTILS_EXTRA_CONFIG_OPTIONS = $(call qstrip,$(BR2_BINUTILS_EXTRA_CONFIG_OPTIONS))
 BINUTILS_INSTALL_STAGING = YES
 BINUTILS_DEPENDENCIES = $(if $(BR2_NEEDS_GETTEXT_IF_LOCALE),gettext)
@@ -52,7 +55,11 @@ HOST_BINUTILS_CONF_OPT = --disable-multilib --disable-werror \
 			--with-sysroot=$(STAGING_DIR) \
 			$(BINUTILS_EXTRA_CONFIG_OPTIONS)
 
+ifeq ($(BINUTILS_VERSION),2.19-arc)
+HOST_BINUTILS_DEPENDENCIES = host-flex host-bison
+else
 HOST_BINUTILS_DEPENDENCIES =
+endif
 
 # We just want libbfd and libiberty, not the full-blown binutils in staging
 define BINUTILS_INSTALL_STAGING_CMDS
-- 
1.7.0.4

[Buildroot] [PATCH v3 04/11] arc: disable Crosstool-NG for ARC

[Mischa Jonker]

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 toolchain/Config.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/toolchain/Config.in b/toolchain/Config.in
index fa78cf4..e6a3b25 100644
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -22,7 +22,7 @@ config BR2_TOOLCHAIN_EXTERNAL
 
 config BR2_TOOLCHAIN_CTNG
 	bool "Crosstool-NG toolchain"
-	depends on !BR2_microblaze && !BR2_aarch64 && !BR2_xtensa
+	depends on !BR2_microblaze && !BR2_aarch64 && !BR2_xtensa && !BR2_arc
 	select BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS
 	help
 	  Say 'y' if you want to generate the toolchain with crosstool-NG
-- 
1.7.0.4

[Buildroot] [PATCH v3 05/11] arc: add gcc for ARC

[Mischa Jonker]

ARC needs a specific GCC for now, while we wait for ARC support to get
upstreamed.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 .../gcc/4.4.7-arc/fix_branch_out_of_range.patch    |   30 ++++++++++++++++++++
 toolchain/gcc/Config.in                            |   22 +++++++++-----
 toolchain/gcc/gcc-uclibc-4.x.mk                    |    2 +
 3 files changed, 46 insertions(+), 8 deletions(-)
 create mode 100644 toolchain/gcc/4.4.7-arc/fix_branch_out_of_range.patch

diff --git a/toolchain/gcc/4.4.7-arc/fix_branch_out_of_range.patch b/toolchain/gcc/4.4.7-arc/fix_branch_out_of_range.patch
new file mode 100644
index 0000000..e39b1cc
--- /dev/null
+++ b/toolchain/gcc/4.4.7-arc/fix_branch_out_of_range.patch
@@ -0,0 +1,30 @@
+arc: Fix operand-out-of-range errors
+
+brcc_s instructions can generate operand-out-of-range errors. While a
+better solution is being discussed by the compiler team, this workaround
+ensures that the chances of running into this issue are low.
+
+Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
+
+diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
+index ff602c0..b3ca4c4 100644
+--- a/gcc/config/arc/arc.c
++++ b/gcc/config/arc/arc.c
+@@ -6565,7 +6565,7 @@ estimate required size increase).
+ 	      rtx *ccp = &XEXP (XVECEXP (pat, 0, 1), 0);
+ 
+ 	      offset = branch_dest (insn) - INSN_ADDRESSES (INSN_UID (insn));
+-	      if ((offset >= -140 && offset < 140)
++	      if ((offset >= -120 && offset < 120)
+ 		  && rtx_equal_p (XEXP (op, 1), const0_rtx)
+  		  && compact_register_operand (XEXP (op, 0), VOIDmode)
+ 		  && equality_comparison_operator (op, VOIDmode))
+@@ -6687,7 +6687,7 @@ estimate required size increase).
+ 
+ 		  if (op0 != cmp0)
+  		    cc_clob_rtx = gen_rtx_REG (CC_ZNmode, CC_REG);
+- 		  else if ((offset >= -140 && offset < 140)
++ 		  else if ((offset >= -120 && offset < 120)
+ 			   && rtx_equal_p (op1, const0_rtx)
+ 			   && compact_register_operand (op0, VOIDmode)
+ 			   && (GET_CODE (op) == EQ
diff --git a/toolchain/gcc/Config.in b/toolchain/gcc/Config.in
index aae422c..f297e73 100644
--- a/toolchain/gcc/Config.in
+++ b/toolchain/gcc/Config.in
@@ -9,44 +9,49 @@ choice
 	prompt "GCC compiler Version"
 	default BR2_GCC_VERSION_4_4_X if BR2_sparc_sparchfleon || BR2_sparc_sparchfleonv8 || BR2_sparc_sparcsfleon || BR2_sparc_sparcsfleonv8
 	default BR2_GCC_VERSION_4_2_2_AVR32_2_1_5 if BR2_avr32
+	default BR2_GCC_VERSION_4_4_7_ARC if BR2_arc
 	default BR2_GCC_VERSION_4_7_X
 	help
 	  Select the version of gcc you wish to use.
 
+	config BR2_GCC_VERSION_4_4_7_ARC
+		depends on BR2_arc
+		bool "gcc 4.4.7-arc"
+
 	config BR2_GCC_VERSION_4_2_2_AVR32_2_1_5
 	       depends on BR2_avr32
 	       bool "gcc 4.2.2-avr32-2.1.5"
 
 	config BR2_GCC_VERSION_4_3_X
-		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_cortex_a5 && !BR2_cortex_a8 && !BR2_cortex_a9 && !BR2_cortex_a15 && !BR2_x86_atom && !BR2_powerpc_e300c2 && !BR2_powerpc_e300c3 && !BR2_powerpc_e500mc && !BR2_powerpc_464 && !BR2_powerpc_464fp && !BR2_powerpc_476 && !BR2_powerpc_476fp && !BR2_fa526 && !BR2_pj4
+		depends on !BR2_arc && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_cortex_a5 && !BR2_cortex_a8 && !BR2_cortex_a9 && !BR2_cortex_a15 && !BR2_x86_atom && !BR2_powerpc_e300c2 && !BR2_powerpc_e300c3 && !BR2_powerpc_e500mc && !BR2_powerpc_464 && !BR2_powerpc_464fp && !BR2_powerpc_476 && !BR2_powerpc_476fp && !BR2_fa526 && !BR2_pj4
 		bool "gcc 4.3.x"
 
 	config BR2_GCC_VERSION_4_4_X
-		depends on !BR2_avr32 && !BR2_cortex_a5 && !BR2_cortex_a15 && !BR2_x86_atom && !BR2_powerpc_476 && !BR2_powerpc_476fp && !BR2_fa526 && !BR2_pj4
+		depends on !BR2_arc && !BR2_avr32 && !BR2_cortex_a5 && !BR2_cortex_a15 && !BR2_x86_atom && !BR2_powerpc_476 && !BR2_powerpc_476fp && !BR2_fa526 && !BR2_pj4
 		bool "gcc 4.4.x"
 
 	config BR2_GCC_VERSION_4_5_X
-		depends on !BR2_avr32 && !BR2_cortex_a15 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_fa526 && !BR2_pj4
+		depends on !BR2_arc && !BR2_avr32 && !BR2_cortex_a15 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_fa526 && !BR2_pj4
 		select BR2_GCC_NEEDS_MPC
 		bool "gcc 4.5.x"
 
 	config BR2_GCC_VERSION_4_6_X
-		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_pj4
+		depends on !BR2_arc && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_pj4
 		select BR2_GCC_NEEDS_MPC
 		bool "gcc 4.6.x"
 
 	config BR2_GCC_VERSION_4_7_X
-		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_pj4
+		depends on !BR2_arc && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_pj4
 		select BR2_GCC_NEEDS_MPC
 		bool "gcc 4.7.x"
 
 	config BR2_GCC_VERSION_4_8_X
-		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
+		depends on !BR2_arc && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
 		select BR2_GCC_NEEDS_MPC
 		bool "gcc 4.8.x"
 
 	config BR2_GCC_VERSION_SNAP
-		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
+		depends on !BR2_arc && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
 		select BR2_GCC_NEEDS_MPC
 		bool "gcc snapshot"
 endchoice
@@ -74,6 +79,7 @@ config BR2_GCC_VERSION
 	default "4.2.2-avr32-2.1.5" if BR2_GCC_VERSION_4_2_2_AVR32_2_1_5
 	default "4.3.6"     if BR2_GCC_VERSION_4_3_X
 	default "4.4.7"     if BR2_GCC_VERSION_4_4_X
+	default "4.4.7-arc" if BR2_GCC_VERSION_4_4_7_ARC
 	default "4.5.4"     if BR2_GCC_VERSION_4_5_X
 	default "4.6.4"     if BR2_GCC_VERSION_4_6_X
 	default "4.7.3"     if BR2_GCC_VERSION_4_7_X
@@ -119,6 +125,6 @@ config BR2_GCC_ENABLE_TLS
 
 config BR2_GCC_ENABLE_OPENMP
 	bool "Enable compiler OpenMP support"
-	depends on !BR2_PTHREADS_NONE && !BR2_avr32
+	depends on !BR2_PTHREADS_NONE && !BR2_avr32 && !BR2_arc
 	help
 	  Enable OpenMP support for the compiler
diff --git a/toolchain/gcc/gcc-uclibc-4.x.mk b/toolchain/gcc/gcc-uclibc-4.x.mk
index 0a96211..2993697 100644
--- a/toolchain/gcc/gcc-uclibc-4.x.mk
+++ b/toolchain/gcc/gcc-uclibc-4.x.mk
@@ -29,6 +29,8 @@ ifneq ($(GCC_SNAP_DATE),)
  GCC_SITE:=ftp://gcc.gnu.org/pub/gcc/snapshots/$(GCC_SNAP_DATE)/
 else ifeq ($(findstring avr32,$(GCC_VERSION)),avr32)
  GCC_SITE:=ftp://www.at91.com/pub/buildroot/
+else ifeq ($(findstring arc,$(GCC_VERSION)),arc)
+ GCC_SITE:=$(BR2_ARC_SITE)
 else
  GCC_SITE:=$(BR2_GNU_MIRROR:/=)/gcc/gcc-$(GCC_VERSION)
 endif
-- 
1.7.0.4

[Buildroot] [PATCH v3 06/11] arc: Add support for ARC-specific uClibc

[Mischa Jonker]

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 toolchain/uClibc/Config.in              |   10 ++++++++--
 toolchain/uClibc/uClibc-snapshot.config |    2 ++
 toolchain/uClibc/uclibc.mk              |    4 ++++
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/toolchain/uClibc/Config.in b/toolchain/uClibc/Config.in
index b98e2e8..316d006 100644
--- a/toolchain/uClibc/Config.in
+++ b/toolchain/uClibc/Config.in
@@ -16,12 +16,16 @@ choice
 
 	config BR2_UCLIBC_VERSION_0_9_32
 		bool "uClibc 0.9.32.x"
-		depends on !(BR2_avr32 || BR2_sh || BR2_xtensa)
+		depends on !(BR2_arc || BR2_avr32 || BR2_sh || BR2_xtensa)
 
 	config BR2_UCLIBC_VERSION_0_9_33
 		bool "uClibc 0.9.33.x"
-		depends on !BR2_xtensa
+		depends on !(BR2_arc || BR2_xtensa)
 
+	config BR2_UCLIBC_VERSION_0_9_33_ARC
+		bool "uClibc 0.9.33.x-arc"
+		depends on BR2_arc
+	
 	config BR2_UCLIBC_VERSION_SNAPSHOT
 		bool "daily snapshot"
 
@@ -39,6 +43,7 @@ config BR2_UCLIBC_VERSION_STRING
 	default 0.9.31.1	if BR2_UCLIBC_VERSION_0_9_31
 	default 0.9.32.1	if BR2_UCLIBC_VERSION_0_9_32
 	default 0.9.33.2	if BR2_UCLIBC_VERSION_0_9_33
+	default 0.9.33-arc	if BR2_UCLIBC_VERSION_0_9_33_ARC
 	default $BR2_USE_UCLIBC_SNAPSHOT	if BR2_UCLIBC_VERSION_SNAPSHOT
 
 config BR2_UCLIBC_CONFIG
@@ -46,6 +51,7 @@ config BR2_UCLIBC_CONFIG
 	default "toolchain/uClibc/uClibc-0.9.31.config" if BR2_UCLIBC_VERSION_0_9_31
 	default "toolchain/uClibc/uClibc-0.9.32.config" if BR2_UCLIBC_VERSION_0_9_32
 	default "toolchain/uClibc/uClibc-0.9.33.config" if BR2_UCLIBC_VERSION_0_9_33
+	default "toolchain/uClibc/uClibc-snapshot.config" if BR2_UCLIBC_VERSION_0_9_33_ARC
 	default "toolchain/uClibc/uClibc-snapshot.config" if BR2_UCLIBC_VERSION_SNAPSHOT
 	help
 	  Some people may wish to use their own modified uClibc configuration
diff --git a/toolchain/uClibc/uClibc-snapshot.config b/toolchain/uClibc/uClibc-snapshot.config
index 71fa472..cb6258d 100644
--- a/toolchain/uClibc/uClibc-snapshot.config
+++ b/toolchain/uClibc/uClibc-snapshot.config
@@ -4,6 +4,7 @@
 # Fri Jul  9 22:31:59 2010
 #
 # TARGET_alpha is not set
+# TARGET_arc is not set
 # TARGET_arm is not set
 # TARGET_avr32 is not set
 # TARGET_bfin is not set
@@ -16,6 +17,7 @@
 # TARGET_i960 is not set
 # TARGET_ia64 is not set
 # TARGET_m68k is not set
+# TARGET_metag is not set
 # TARGET_microblaze is not set
 # TARGET_mips is not set
 # TARGET_nios is not set
diff --git a/toolchain/uClibc/uclibc.mk b/toolchain/uClibc/uclibc.mk
index 2249651..1629e76 100644
--- a/toolchain/uClibc/uclibc.mk
+++ b/toolchain/uClibc/uclibc.mk
@@ -17,6 +17,9 @@ UCLIBC_VERSION:=$(call qstrip,$(BR2_UCLIBC_VERSION_STRING))
 ifeq ($(BR2_UCLIBC_VERSION_SNAPSHOT),y)
 UCLIBC_SITE:=http://www.uclibc.org/downloads/snapshots
 UCLIBC_DIR:=$(TOOLCHAIN_DIR)/uClibc
+else ifeq ($(findstring arc,$(UCLIBC_VERSION)),arc)
+UCLIBC_SITE:=$(BR2_ARC_SITE)
+UCLIBC_DIR:=$(TOOLCHAIN_DIR)/uClibc-$(UCLIBC_VERSION)
 else
 UCLIBC_SITE:=http://www.uclibc.org/downloads
 UCLIBC_DIR:=$(TOOLCHAIN_DIR)/uClibc-$(UCLIBC_VERSION)
@@ -31,6 +34,7 @@ UCLIBC_TARGET_ARCH:=$(shell $(SHELL) -c "echo $(ARCH) | sed \
 		-e 's/-.*//' \
 		-e 's/i.86/i386/' \
 		-e 's/sparc.*/sparc/' \
+		-e 's/arc.*/arc/g' \
 		-e 's/arm.*/arm/g' \
 		-e 's/m68k.*/m68k/' \
 		-e 's/ppc/powerpc/g' \
-- 
1.7.0.4

[Buildroot] [PATCH v3 07/11] arc: Make sure that libgcc doesn't get included when it doesn't exist yet

[Mischa Jonker]

For ARC, libgcc is always included, even when -nostdlib is given. This is
related to some small pieces of code that are not always generated by the
compiler; a call to libgcc is used in those cases instead.

During the initial stages of building the toolchain, this is a problem, as
libgcc does not exist yet. The ARC compiler supports -really-nostdlib to
override the default behavior.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 toolchain/uClibc/uclibc.mk |   15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/toolchain/uClibc/uclibc.mk b/toolchain/uClibc/uclibc.mk
index 1629e76..d4f1d4c 100644
--- a/toolchain/uClibc/uclibc.mk
+++ b/toolchain/uClibc/uclibc.mk
@@ -404,6 +404,17 @@ ifeq ($(BR2_CCACHE),y)
 $(UCLIBC_DIR)/.config: | host-ccache
 endif
 
+# For ARC, libgcc is always included, even when -nostdlib is given. This
+# is related to some small pieces of code that are not always generated
+# by the compiler; a call to libgcc is used in those cases instead.
+#
+# During the initial stages of building the toolchain, this is a problem,
+# as libgcc does not exist yet. The ARC compiler supports -really-nostdlib
+# to override the default behavior.
+ifeq ($(BR2_arc),y)
+REALLY_NOSTDLIB=-really-nostdlib
+endif
+
 $(UCLIBC_DIR)/.configured: $(LINUX_HEADERS_DIR)/.configured $(UCLIBC_DIR)/.config
 	$(Q)$(call MESSAGE,"Installing uClibc headers")
 	$(MAKE1) -C $(UCLIBC_DIR) \
@@ -422,8 +433,8 @@ $(UCLIBC_DIR)/.configured: $(LINUX_HEADERS_DIR)/.configured $(UCLIBC_DIR)/.confi
 		cp -pLR $(LINUX_HEADERS_DIR)/include/* \
 			$(TOOLCHAIN_DIR)/uClibc_dev/usr/include/; \
 	fi
-	$(TARGET_CROSS)gcc -nostdlib -nostartfiles -shared -x c /dev/null -o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/libc.so
-	$(TARGET_CROSS)gcc -nostdlib -nostartfiles -shared -x c /dev/null -o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/libm.so
+	$(TARGET_CROSS)gcc -nostdlib $(REALLY_NOSTDLIB) -nostartfiles -shared -x c /dev/null -o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/libc.so
+	$(TARGET_CROSS)gcc -nostdlib $(REALLY_NOSTDLIB) -nostartfiles -shared -x c /dev/null -o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/libm.so
 	cp -pLR $(UCLIBC_DIR)/lib/crt[1in].o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/
 	touch $@
 
-- 
1.7.0.4

[Buildroot] [PATCH v3 08/11] toolchain/gcc: Only enable --with-float when it makes sense

[Mischa Jonker]

According to gcc/config.gcc, only ARM, MIPS and SPARC have the
"--with-float" option when configuring gcc.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 toolchain/gcc/gcc-uclibc-4.x.mk |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/toolchain/gcc/gcc-uclibc-4.x.mk b/toolchain/gcc/gcc-uclibc-4.x.mk
index 2993697..7b77fb0 100644
--- a/toolchain/gcc/gcc-uclibc-4.x.mk
+++ b/toolchain/gcc/gcc-uclibc-4.x.mk
@@ -65,7 +65,10 @@ endif
 
 # Determine soft-float options
 ifeq ($(BR2_SOFT_FLOAT),y)
+# only mips*-*-*, arm*-*-* and sparc*-*-* accept --with-float
+ifeq ($(BR2_arm)$(BR2_armeb)$(BR2_mips)$(BR2_mipsel)$(BR2_sparc)$(BR2_mips64)$(BR2_mips64el),y)
 SOFT_FLOAT_CONFIG_OPTION:=--with-float=soft
+endif
 ifeq ($(BR2_arm)$(BR2_armeb),y) # only set float-abi for arm
 TARGET_SOFT_FLOAT:=-mfloat-abi=soft
 else
-- 
1.7.0.4

[Buildroot] [PATCH v3 09/11] toolchain/toolchain-buildroot: Disable NPTL for ARC

[Mischa Jonker]

NPTL is not yet supported for ARC.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 toolchain/toolchain-buildroot/Config.in.2 |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/toolchain/toolchain-buildroot/Config.in.2 b/toolchain/toolchain-buildroot/Config.in.2
index 7f19b09..35d6db2 100644
--- a/toolchain/toolchain-buildroot/Config.in.2
+++ b/toolchain/toolchain-buildroot/Config.in.2
@@ -97,6 +97,7 @@ choice
 		depends on !BR2_x86_i386
 		depends on !BR2_avr32
 		depends on !BR2_xtensa
+		depends on !BR2_arc
 endchoice
 
 config BR2_PTHREAD_DEBUG
-- 
1.7.0.4

[Buildroot] [PATCH v3 10/11] arc: Add arc, arcbe to gnuconfig

[Mischa Jonker]

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 support/gnuconfig/config.sub |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/support/gnuconfig/config.sub b/support/gnuconfig/config.sub
index 8509813..b2958ad 100755
--- a/support/gnuconfig/config.sub
+++ b/support/gnuconfig/config.sub
@@ -259,7 +259,7 @@ case $basic_machine in
 	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
 	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
 	| am33_2.0 \
-	| arc \
+	| arc | arceb \
 	| arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \
 	| avr | avr32 \
 	| be32 | be64 \
@@ -372,7 +372,7 @@ case $basic_machine in
 	| aarch64-* | aarch64_be-* \
 	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
 	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
-	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
+	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* | arceb-* \
 	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
 	| avr-* | avr32-* \
 	| be32-* | be64-* \
-- 
1.7.0.4

[Buildroot] [PATCH v3 11/11] kernel-headers: Add support for ARC kernel headers

[Mischa Jonker]

Also make sure that older kernels are not selected for ARC.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 Makefile                           |    1 +
 toolchain/kernel-headers/Config.in |   14 +++++++++-----
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/Makefile b/Makefile
index 97804ff..ce7530f 100644
--- a/Makefile
+++ b/Makefile
@@ -238,6 +238,7 @@ ARCH:=$(call qstrip,$(BR2_ARCH))
 
 KERNEL_ARCH:=$(shell echo "$(ARCH)" | sed -e "s/-.*//" \
 	-e s/i.86/i386/ -e s/sun4u/sparc64/ \
+	-e s/arc.*/arc/ \
 	-e s/arm.*/arm/ -e s/sa110/arm/ \
 	-e s/aarch64/arm64/ \
 	-e s/bfin/blackfin/ \
diff --git a/toolchain/kernel-headers/Config.in b/toolchain/kernel-headers/Config.in
index 12c53d8..aff69d9 100644
--- a/toolchain/kernel-headers/Config.in
+++ b/toolchain/kernel-headers/Config.in
@@ -17,35 +17,39 @@ choice
 
 	config BR2_KERNEL_HEADERS_3_0
 		bool "Linux 3.0.x kernel headers"
+		depends on !BR2_arc
 
 	config BR2_KERNEL_HEADERS_3_1
 		bool "Linux 3.1.x kernel headers"
-		depends on BR2_DEPRECATED
+		depends on BR2_DEPRECATED && !BR2_arc
 
 	config BR2_KERNEL_HEADERS_3_2
 		bool "Linux 3.2.x kernel headers"
+		depends on !BR2_arc
 
 	config BR2_KERNEL_HEADERS_3_3
 		bool "Linux 3.3.x kernel headers"
-		depends on BR2_DEPRECATED
+		depends on BR2_DEPRECATED && !BR2_arc
 
 	config BR2_KERNEL_HEADERS_3_4
 		bool "Linux 3.4.x kernel headers"
+		depends on !BR2_arc
 
 	config BR2_KERNEL_HEADERS_3_5
 		bool "Linux 3.5.x kernel headers"
-		depends on BR2_DEPRECATED
+		depends on BR2_DEPRECATED && !BR2_arc
 
 	config BR2_KERNEL_HEADERS_3_6
 		bool "Linux 3.6.x kernel headers"
-		depends on BR2_DEPRECATED
+		depends on BR2_DEPRECATED && !BR2_arc
 
 	config BR2_KERNEL_HEADERS_3_7
 		bool "Linux 3.7.x kernel headers"
-		depends on BR2_DEPRECATED
+		depends on BR2_DEPRECATED && !BR2_arc
 
 	config BR2_KERNEL_HEADERS_3_8
 		bool "Linux 3.8.x kernel headers"
+		depends on !BR2_arc
 
 	config BR2_KERNEL_HEADERS_3_9
 		bool "Linux 3.9.x kernel headers"
-- 
1.7.0.4

[Buildroot] [PATCH v3 00/11] ARC port

[Thomas Petazzoni]

Dear Mischa Jonker,

On Thu,  2 May 2013 15:00:39 +0200, Mischa Jonker wrote:

> Changes in v3:
>  * removed GCC arch-dependency cleanup patch (should be discussed separately)
>  * 3.9-rc8-->3.9 kernel headers
>  * Added bison/flex host dependencies

Hum, what happened to the gcc changes to have the host-bison/host-flex
dependencies, and the changes to make sure that $(HOST_DIR)/usr/bin is
in the PATH when building gcc?

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] [PATCH v3 00/11] ARC port

[Mischa Jonker]

Hi Thomas,

> > Changes in v3:
> >  * removed GCC arch-dependency cleanup patch (should be discussed 
> > separately)
> >  * 3.9-rc8-->3.9 kernel headers
> >  * Added bison/flex host dependencies

> Hum, what happened to the gcc changes to have the host-bison/host-flex dependencies, 
> and the changes to make sure that $(HOST_DIR)/usr/bin is in the PATH when building gcc?

Host-flex, host-bison dependencies for binutils squashed into patch v3 03/11, as you suggested. 

I moved the host-flex, host-bison dependencies before the rest of the patches (as suggested), but 
now I notice that I forgot to include it in the series (doh!). Should I send it separately, or would
you rather like a v4?

Thanks,

Mischa

[Buildroot] [PATCH v3 00/11] ARC port

[Thomas Petazzoni]

Dear Mischa Jonker,

On Thu, 2 May 2013 15:30:18 +0000, Mischa Jonker wrote:

> > Hum, what happened to the gcc changes to have the host-bison/host-flex dependencies, 
> > and the changes to make sure that $(HOST_DIR)/usr/bin is in the PATH when building gcc?
> 
> Host-flex, host-bison dependencies for binutils squashed into patch v3 03/11, as you suggested. 

Yeah, for binutils, we're good. I was talking about the ones for gcc.

> I moved the host-flex, host-bison dependencies before the rest of the patches (as suggested), but 
> now I notice that I forgot to include it in the series (doh!). Should I send it separately, or would
> you rather like a v4?

Just send a v4, e-mails are cheap :)

Thanks!

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com