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author | Masami Hiramatsu <mhiramat@redhat.com> | 2008-09-09 16:01:37 -0400 |
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committer | Masami Hiramatsu <mhiramat@redhat.com> | 2008-09-09 16:01:37 -0400 |
commit | 901a409a01da22778ea15f7b9f938885bdc38847 (patch) | |
tree | 1b52b24bd629b9d52a19b2ad971bf2494e4b9ebf /runtime/regs-ia64.c | |
parent | 4a0e1ceaed41df14fa3a4870c00c334a6dd8384f (diff) | |
download | systemtap-steved-901a409a01da22778ea15f7b9f938885bdc38847.tar.gz systemtap-steved-901a409a01da22778ea15f7b9f938885bdc38847.tar.xz systemtap-steved-901a409a01da22778ea15f7b9f938885bdc38847.zip |
Utrace on ia64 fast fetch-register support
Diffstat (limited to 'runtime/regs-ia64.c')
-rw-r--r-- | runtime/regs-ia64.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/runtime/regs-ia64.c b/runtime/regs-ia64.c index fd8d8ca8..8ce3e4c3 100644 --- a/runtime/regs-ia64.c +++ b/runtime/regs-ia64.c @@ -61,27 +61,36 @@ static void ia64_stap_get_arbsp(struct unw_frame_info *info, void *arg) -(__offset + (regs->cr_ifs & 127)));\ } -static long ia64_fetch_register(int regno, struct pt_regs *pt_regs, unsigned long **cache) +static long * +__ia64_fetch_register(int regno, struct pt_regs *pt_regs, unsigned long **cache) { struct ia64_stap_get_arbsp_param pa; if (regno == 12) - return pt_regs->r12; + return &pt_regs->r12; if (regno >= 8 && regno <= 11) - return *(unsigned long *)(&pt_regs->r8 + regno - 8); + return (long *)(&pt_regs->r8 + regno - 8); else if (regno < 32 || regno > 127) - return 0; + return NULL; if (!*cache) { pa.ip = pt_regs->cr_iip; unw_init_running(ia64_stap_get_arbsp, &pa); if (pa.address == 0) - return 0; + return NULL; *cache = pa.address; } - return *ia64_rse_skip_regs(*cache, regno-32); + return ia64_rse_skip_regs(*cache, regno-32); +} + +static long +ia64_fetch_register(int regno, struct pt_regs *pt_regs, unsigned long **cache) +{ + long *reg; + reg = __ia64_fetch_register(regno, pt_regs, cache); + return (reg != NULL)? *reg : 0; } static void ia64_store_register(int regno, |