----- "Cliff Wickman" <[email protected]> wrote:
> This patch enables stack unwind (on ia64) when using a kerntypes
> file for a namelist.
>
> When using a kerntypes file, we have just the address of variable unw
> and the definition of an unw structure.
>
> As you can see, I didn't change the indentation of the normal code.
Nicely segregated. But instead of leaving the indentation screwed up,
I just inserted a "goto verify" at the bottom of your if statement and
put the label at the proper location.
> Simple to do, but I didn't want to clutter this patch for a first
> pass.
With that in place, should I just take the patch for the next release,
or did you have something else you want to add?
Dave
>
> ---
> unwind.c | 34 ++++++++++++++++++++++++++++++++++
> 1 file changed, 34 insertions(+)
>
> Index: crash-4.0-7.6.ia64/unwind.c
> ===================================================================
> --- crash-4.0-7.6.ia64.orig/unwind.c
> +++ crash-4.0-7.6.ia64/unwind.c
> @@ -1395,10 +1395,43 @@ unwind_init_v2(void)
> unwind_init_v3(void)
> #endif
> {
> + int len;
> struct gnu_request request, *req;
>
> req = &request;
>
> + if (LKCD_KERNTYPES()) {
> + if ((len = STRUCT_SIZE("unw")) == 0) {
> + error(WARNING,
> + "cannot determine unw.tables offset; no struct unw\n");
> + machdep->flags |= UNW_OUT_OF_SYNC;
> + return;
> + }
> + machdep->machspec->unw_tables_offset =
> + MEMBER_OFFSET("unw", "tables");
> + if (MEMBER_EXISTS("unw", "r0"))
> + machdep->flags |= UNW_R0;
> + /*
> + * no verification of save_order, sw_off, preg_index as
> + * we're purely depending on the structure definition.
> + */
> + if (MEMBER_EXISTS("unw", "pt_regs_offsets")) {
> + machdep->machspec->unw_pt_regs_offsets =
> + MEMBER_OFFSET("unw", "pt_regs_offsets") -
> + machdep->machspec->unw_tables_offset;
> + machdep->machspec->unw_kernel_table_offset =
> + MEMBER_OFFSET("unw", "kernel_table") -
> + machdep->machspec->unw_tables_offset;
> + machdep->flags |= UNW_PTREGS;
> + }
> + if (!load_unw_table(CLEAR_SCRIPT_CACHE)) {
> + error(WARNING,
> + "unwind_init: cannot read kernel unw table\n");
> + machdep->flags |= UNW_OUT_OF_SYNC;
> + }
> + machdep->machspec->unw = (void *)&unw;
> + /* fall to common structure size verifications */
> + } else {
> if (get_symbol_type("unw", "tables", req) == TYPE_CODE_UNDEF)
> {
> /*
> * KLUDGE ALERT:
> @@ -1449,6 +1482,7 @@ unwind_init_v3(void)
>
> machdep->machspec->unw = (void *)&unw;
> }
> + }
>
> verify_common_struct("unw_frame_info", sizeof(struct
> unw_frame_info));
> verify_common_struct("unw_table", sizeof(struct unw_table));
--
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