• Jason Wessel's avatar
    kdb: core for kgdb back end (1 of 2) · 5d5314d6
    Jason Wessel authored
    This patch contains only the kdb core.  Because the change set was
    large, it was split.  The next patch in the series includes the
    instrumentation into the core kernel which are mainly helper functions
    for kdb.
    
    This work is directly derived from kdb v4.4 found at:
    
    ftp://oss.sgi.com/projects/kdb/download/v4.4/
    
    
    
    The kdb internals have been re-organized to make them mostly platform
    independent and to connect everything to the debug core which is used by
    gdbstub (which has long been known as kgdb).
    
    The original version of kdb was 58,000 lines worth of changes to
    support x86.  From that implementation only the kdb shell, and basic
    commands for memory access, runcontrol, lsmod, and dmesg where carried
    forward.
    
    This is a generic implementation which aims to cover all the current
    architectures using the kgdb core: ppc, arm, x86, mips, sparc, sh and
    blackfin.  More archictectures can be added by implementing the
    architecture specific kgdb functions.
    
    [mort@sgi.com: Compile fix with hugepages enabled]
    [mort@sgi.com: Clean breakpoint code renaming kdba_ -> kdb_]
    [mort@sgi.com: fix new line after printing registers]
    [mort@sgi.com: Remove the concept of global vs. local breakpoints]
    [mort@sgi.com: Rework kdb_si_swapinfo to use more generic name]
    [mort@sgi.com: fix the information dump macros, remove 'arch' from the names]
    [sfr@canb.auug.org.au: include fixup to include linux/slab.h]
    
    CC: linux-arch@vger.kernel.org
    Signed-off-by: default avatarJason Wessel <jason.wessel@windriver.com>
    Signed-off-by: default avatarMartin Hicks <mort@sgi.com>
    5d5314d6