the former to avoid compiler-warnings.
(run_script): Before doing the big switch, check for most common
case (IA64_INSN_MOVE_STACKED).
(Logical change 1.130)
(get_script_cache): Return NULL if caching is disabled. If
HAVE_ATOMIC_OPS_H is defined, set the busy flag and if
the script cache is busy already, return NULL.
(put_script_cache): Don't allow it to be called for UNW_CACHE_NONE case.
If HAVE_ATOMIC_OPS_H is defined, clear the "busy" flag via
AO_CLEAR.
(ia64_get_cached_proc_info): If we're unable to acquire the cache,
return -UNW_ENOINFO.
(script_init): New function.
(script_new): Replace open code with call to script_init().
(uncached_find_save_locs): New function.
(ia64_find_save_locs): Move code for uncached case to
uncached_find_save_locs(). If get_script_cache() is unable to
lock the script-cache, fall back to uncached_find_save_locs().
(ia64_script_cache_init): Delete.
(Logical change 1.124)
hash-table, collision-chains, and hash-table in addition
to clearing the script's IP value. The latter wasn't nearly
sufficient because it could cause loops on the collision
chain...
(get_script_cache): Also lock the cache if global caching is in
effect. Take additional "saved_sigmaskp" argument.
After flushing the cache, update the cache generation
here.
(put_script_cache): New function.
(ia64_get_cached_proc_info): Adjust for get_script_cache() and
put_script_cache() changes.
(ia64_find_save_locs): Ditto.
(ia64_script_cache_init): Call flush_script_cache() instead of
opening-coding the equivalent code.
(Logical change 1.96)
(emit_nat_info): For registers saved in a general-register, use IA64_INSN_SET_REG
instead of IA64_INSN_SET.
Set insn.dst to register number, instead of unw.preg_index[i].
(compile_reg): Set val directly to register number, instead of unw.preg_index[i].
Use IA64_INSN_INC_PSP instead of IA64_INSN_ADD to pop a fixed stack frame.
(build_script): Handle signal-frames by directly copying abi_marker, rather than
emitting an IA64_INSN_SET instruction.
(run_script): Copy abi_marker into cursor. Rather than updating a word, update
a save-location. Only exceptions are IA64_INSN_INC_PSP and
IA64_INSN_LOAD_PSP.
(Logical change 1.84)
(ia64_get_cached_proc_info): Rename from ia64_script_lookup() and modify it so
it directly updates the proc-info if the necessary script is in the cache.
(script_new): Remove locking comments and adjust formatting.
(ia64_find_save_locs): If global caching is enabled, mask signal delivery and
hold the cache lock while accessing the cache.
(ia64_script_cache_init): Initialize the cache lock.
(Logical change 1.59)
