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| author | Masami Hiramatsu <mhiramat@redhat.com> | 2008-04-04 16:52:30 -0400 |
|---|---|---|
| committer | Masami Hiramatsu <mhiramat@redhat.com> | 2008-04-04 16:52:30 -0400 |
| commit | b916df9c10dddd0ae49a9029c8758759a319fb71 (patch) | |
| tree | 10c84aebfd992f31d3dbffccbe4b10b81d995e6b /runtime/regs-ia64.c | |
| parent | 5eba3ad6104a45c4bc6e1b3b2283f0fb05fbef87 (diff) | |
| download | systemtap-steved-b916df9c10dddd0ae49a9029c8758759a319fb71.tar.gz systemtap-steved-b916df9c10dddd0ae49a9029c8758759a319fb71.tar.xz systemtap-steved-b916df9c10dddd0ae49a9029c8758759a319fb71.zip | |
2008-04-04 Masami Hiramatsu <mhiramat@redhat.com>
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.
Diffstat (limited to 'runtime/regs-ia64.c')
| -rw-r--r-- | runtime/regs-ia64.c | 15 |
1 files changed, 9 insertions, 6 deletions
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, |