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. Simple to do, but I didn't want to clutter this patch for a first pass. I tested this against a live 2.6.16 (sles) kernel. Diffed against crash-4.0-7.6 Signed-off-by: Cliff Wickman <cpw(a)sgi.com&gt; --- 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));