mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-11-05 09:19:27 +01:00
98 lines
3.7 KiB
C
98 lines
3.7 KiB
C
/* libunwind - a platform-independent unwind library
|
|
Copyright (C) 2001-2002 Hewlett-Packard Co
|
|
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
|
|
|
|
This file is part of libunwind.
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining
|
|
a copy of this software and associated documentation files (the
|
|
"Software"), to deal in the Software without restriction, including
|
|
without limitation the rights to use, copy, modify, merge, publish,
|
|
distribute, sublicense, and/or sell copies of the Software, and to
|
|
permit persons to whom the Software is furnished to do so, subject to
|
|
the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be
|
|
included in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
|
|
#define IA64_LOG_UNW_CACHE_SIZE 7
|
|
#define IA64_UNW_CACHE_SIZE (1 << IA64_LOG_UNW_CACHE_SIZE)
|
|
|
|
#define IA64_LOG_UNW_HASH_SIZE (IA64_LOG_UNW_CACHE_SIZE + 1)
|
|
#define IA64_UNW_HASH_SIZE (1 << IA64_LOG_UNW_HASH_SIZE)
|
|
|
|
typedef unsigned char unw_hash_index_t;
|
|
|
|
enum ia64_script_insn_opcode
|
|
{
|
|
IA64_INSN_SET, /* s[dst] = val */
|
|
IA64_INSN_SET_REG, /* s[dst] = REG(val) */
|
|
IA64_INSN_ADD_PSP, /* s[dst] = (s.psp + val) */
|
|
IA64_INSN_ADD_SP, /* s[dst] = (s.sp + val) */
|
|
IA64_INSN_MOVE, /* s[dst] = s[val] */
|
|
IA64_INSN_MOVE_STACKED, /* s[dst] = ia64_rse_skip(*s.bsp_loc, val) */
|
|
IA64_INSN_MOVE_SCRATCH, /* s[dst] = scratch reg "val" */
|
|
IA64_INSN_SETNAT_MEMSTK, /* s[dst].nat.type = s.pri_unat_loc | MEMSTK */
|
|
IA64_INSN_INC_PSP, /* psp += val */
|
|
IA64_INSN_LOAD_PSP /* psp = *psp_loc */
|
|
};
|
|
|
|
struct ia64_script_insn
|
|
{
|
|
unsigned int opc;
|
|
unsigned int dst;
|
|
unw_word_t val;
|
|
};
|
|
|
|
/* Preserved general static registers (r4-r7) give rise to two script
|
|
instructions; everything else yields at most one instruction; at
|
|
the end of the script, the psp gets popped, accounting for one more
|
|
instruction. */
|
|
#define IA64_MAX_SCRIPT_LEN (IA64_NUM_PREGS + 5)
|
|
|
|
struct ia64_script
|
|
{
|
|
unw_word_t ip; /* ip this script is for */
|
|
unw_word_t pr_mask; /* mask of predicates script depends on */
|
|
unw_word_t pr_val; /* predicate values this script is for */
|
|
unw_proc_info_t pi; /* info about underlying procedure */
|
|
unsigned short lru_chain; /* used for least-recently-used chain */
|
|
unsigned short coll_chain; /* used for hash collisions */
|
|
unsigned short hint; /* hint for next script to try (or -1) */
|
|
unsigned short count; /* number of instructions in script */
|
|
unsigned short abi_marker;
|
|
struct ia64_script_insn insn[IA64_MAX_SCRIPT_LEN];
|
|
};
|
|
|
|
struct ia64_script_cache
|
|
{
|
|
#ifdef HAVE_ATOMIC_OPS_H
|
|
AO_TS_T busy; /* is the script-cache busy? */
|
|
#else
|
|
pthread_mutex_t lock;
|
|
#endif
|
|
unsigned short lru_head; /* index of lead-recently used script */
|
|
unsigned short lru_tail; /* index of most-recently used script */
|
|
|
|
/* hash table that maps instruction pointer to script index: */
|
|
unsigned short hash[IA64_UNW_HASH_SIZE];
|
|
|
|
uint32_t generation; /* generation number */
|
|
|
|
/* script cache: */
|
|
struct ia64_script buckets[IA64_UNW_CACHE_SIZE];
|
|
};
|
|
|
|
#define ia64_get_cached_proc_info UNW_OBJ(ia64_get_cached_proc_info)
|
|
|
|
struct cursor; /* forward declaration */
|
|
|
|
extern int ia64_get_cached_proc_info (struct cursor *c);
|