From b916df9c10dddd0ae49a9029c8758759a319fb71 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Fri, 4 Apr 2008 16:52:30 -0400 Subject: 2008-04-04 Masami Hiramatsu PR 6028 * translate.cxx (c_unparser::emit_common_header): Add unwaddr for caching unwound address. * tapsets.cxx (common_probe_entryfn_prologue): Clear unwaddr. * loc2c-runtime.h (fetch_register): Call ia64_fetch_register with the address of c->unwaddr. * regs-ia64.c (ia64_fetch_register): Don't unwind stack if it has already unwound stack in same probe. --- runtime/regs-ia64.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'runtime/regs-ia64.c') diff --git a/runtime/regs-ia64.c b/runtime/regs-ia64.c index 2a5a1d17..66dc60f3 100644 --- a/runtime/regs-ia64.c +++ b/runtime/regs-ia64.c @@ -35,7 +35,7 @@ static void ia64_stap_get_arbsp(struct unw_frame_info *info, void *arg) lp->address = 0; } -static long ia64_fetch_register(int regno, struct pt_regs *pt_regs) +static long ia64_fetch_register(int regno, struct pt_regs *pt_regs, unsigned long **cache) { struct ia64_stap_get_arbsp_param pa; @@ -47,12 +47,15 @@ static long ia64_fetch_register(int regno, struct pt_regs *pt_regs) else if (regno < 32 || regno > 127) return 0; - pa.ip = pt_regs->cr_iip; - unw_init_running(ia64_stap_get_arbsp, &pa); - if (pa.address == 0) - return 0; + if (!*cache) { + pa.ip = pt_regs->cr_iip; + unw_init_running(ia64_stap_get_arbsp, &pa); + if (pa.address == 0) + return 0; + *cache = pa.address; + } - return *ia64_rse_skip_regs(pa.address, regno-32); + return *ia64_rse_skip_regs(*cache, regno-32); } static void ia64_store_register(int regno, -- cgit