Update the architecture API: architecture help is mandatory.
Update all architectures (some with pointer to the specs, when available).

/trunk/docs/overview.txt | 8 8 0 0 ++++++++
/trunk/arch/arm/config.in | 3 3 0 0 +++
/trunk/arch/powerpc/config.in | 3 3 0 0 +++
/trunk/arch/ia64/config.in | 3 3 0 0 +++
/trunk/arch/alpha/config.in | 2 2 0 0 ++
/trunk/arch/x86/config.in | 3 3 0 0 +++
/trunk/arch/mips/config.in | 3 3 0 0 +++
/trunk/arch/sh/config.in | 3 3 0 0 +++
/trunk/arch/x86_64/config.in | 3 3 0 0 +++
9 files changed, 31 insertions(+)

# ARM specific configuration file

config ARCH_arm

    select ARCH_SUPPORTS_BOTH_ENDIAN

    select ARCH_DEFAULT_LE

    help

      The ARM architecture, as defined by:

        http://www.arm.com/

config ARCH_ARM_EABI

    bool

    prompt "Use EABI (EXPERIMENTAL)"

    depends on EXPERIMENTAL

    default n

    help

      Set up the toolchain so that it generates EABI-compliant binaries.

config ARCH_ABI

    default "aapcs" if ARCH_ARM_EABI