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    SubjectRe: [Kgdb-bugreport] [KGDB][RFC] Send a fuller T packet
    Tom Rini wrote:
    > On Tue, Mar 02, 2004 at 03:28:45PM -0800, George Anzinger wrote:
    >>Tom Rini wrote:
    >>>Hello. Since a 'T' packet is allowed to send back information on an
    >>>arbitrary number of registers, and on PPC32 we've always been including
    >>>information on the stack pointer and program counter, I was wondering
    >>>what people thought of the following patch:
    >>>diff -u linux-2.6.3/include/asm-x86_64/kgdb.h
    >>>--- linux-2.6.3/include/asm-x86_64/kgdb.h 2004-02-27
    >>>11:30:37.445782703 -0700
    >>>+++ linux-2.6.3/include/asm-x86_64/kgdb.h 2004-03-02
    >>>14:42:47.854532793 -0700
    >>>@@ -48,6 +48,10 @@
    >>>/* Number of bytes of registers. */
    >>>#define NUMREGBYTES (_LASTREG*8)
    >>>+#define PC_REGNUM _PC /* Program Counter */
    >>>+#define SP_REGNUM _RSP /* Stack Pointer */
    >>>+#define PTRACE_PC rip /* Program Counter, in ptrace regs. */
    >>I would really like to keep this stuff out of kgdb.h since it may be
    >>included by the user to pick up the BREAKPOINT() (which, by the way we
    >>should standardize as I note that here it has () while not on the current
    > It's BREAKPOINT() everywhere:
    Yeah, something you changed? Oh well, I will just have to learn to put the "()"
    in :)
    > $ grep BREAKPOINT include/asm-*/kgdb.h
    > include/asm-i386/kgdb.h:#define BREAKPOINT() asm(" int $3");
    > include/asm-ppc/kgdb.h:#define BREAKPOINT() asm(".long 0x7d821008") /* twge r2, r2 */
    > include/asm-x86_64/kgdb.h:#define BREAKPOINT() asm(" int $3");
    >>Isn't there a kgdb_local.h which is used only by kdgd and friends? We
    >>really do want to keep the name space as clean as possible to prevent
    >>possible conflicts.
    > The simple answer is you don't call BREAKPOINT() in your code anywhere.
    > You call breakpoint() or kgdb_schedule_breakpoint().

    Uh, why? Last I knew that was a real function. Most of the time I just want a
    simple breakpoint. I surly don't want the register dumps and such that a
    function call causes, not to mention that it may do something else that is not

    > The split here is different in that <linux/kgdb.h> should be standalone
    > (it's not, _yet_).

    Yeah, but it will most likely include asm/kgdb.h....
    > But this is all an aside to my question. :)

    Right, my answer on that is if it reduces the line traffic yes, if not, no.
    Because then it is just bloat.

    George Anzinger
    Preemption patch:

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