mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-09-11 08:42:52 +02:00
314 lines
11 KiB
C
314 lines
11 KiB
C
/* libunwind - a platform-independent unwind library
|
|
Copyright (C) 2006-2007 IBM
|
|
Contributed by
|
|
Corey Ashford <cjashfor@us.ibm.com>
|
|
Jose Flavio Aguilar Paulino <jflavio@br.ibm.com> <joseflavio@gmail.com>
|
|
|
|
Copied from libunwind-x86_64.h, modified slightly for building
|
|
frysk successfully on ppc64, by Wu Zhou <woodzltc@cn.ibm.com>
|
|
Will be replaced when libunwind is ready on ppc64 platform.
|
|
|
|
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. */
|
|
|
|
#ifndef PPC32_LIBUNWIND_I_H
|
|
#define PPC32_LIBUNWIND_I_H
|
|
|
|
/* Target-dependent definitions that are internal to libunwind but need
|
|
to be shared with target-independent code. */
|
|
|
|
#include <stdlib.h>
|
|
#include <libunwind.h>
|
|
|
|
#include "elf32.h"
|
|
#include "mempool.h"
|
|
#include "dwarf.h"
|
|
|
|
typedef struct
|
|
{
|
|
/* no ppc32-specific fast trace */
|
|
}
|
|
unw_tdep_frame_t;
|
|
|
|
struct unw_addr_space
|
|
{
|
|
struct unw_accessors acc;
|
|
unw_caching_policy_t caching_policy;
|
|
#ifdef HAVE_ATOMIC_OPS_H
|
|
AO_t cache_generation;
|
|
#else
|
|
uint32_t cache_generation;
|
|
#endif
|
|
unw_word_t dyn_generation; /* see dyn-common.h */
|
|
unw_word_t dyn_info_list_addr; /* (cached) dyn_info_list_addr */
|
|
struct dwarf_rs_cache global_cache;
|
|
struct unw_debug_frame_list *debug_frames;
|
|
int validate;
|
|
};
|
|
|
|
struct cursor
|
|
{
|
|
struct dwarf_cursor dwarf; /* must be first */
|
|
|
|
/* Format of sigcontext structure and address at which it is
|
|
stored: */
|
|
enum
|
|
{
|
|
PPC_SCF_NONE, /* no signal frame encountered */
|
|
PPC_SCF_LINUX_RT_SIGFRAME /* POSIX ucontext_t */
|
|
}
|
|
sigcontext_format;
|
|
unw_word_t sigcontext_addr;
|
|
};
|
|
|
|
#define DWARF_GET_LOC(l) ((l).val)
|
|
|
|
#ifdef UNW_LOCAL_ONLY
|
|
# define DWARF_NULL_LOC DWARF_LOC (0, 0)
|
|
# define DWARF_IS_NULL_LOC(l) (DWARF_GET_LOC (l) == 0)
|
|
# define DWARF_LOC(r, t) ((dwarf_loc_t) { .val = (r) })
|
|
# define DWARF_IS_REG_LOC(l) 0
|
|
# define DWARF_IS_FP_LOC(l) 0
|
|
# define DWARF_IS_V_LOC(l) 0
|
|
# define DWARF_MEM_LOC(c,m) DWARF_LOC ((m), 0)
|
|
# define DWARF_REG_LOC(c,r) (DWARF_LOC((unw_word_t) \
|
|
tdep_uc_addr((c)->as_arg, (r)), 0))
|
|
# define DWARF_FPREG_LOC(c,r) (DWARF_LOC((unw_word_t) \
|
|
tdep_uc_addr((c)->as_arg, (r)), 0))
|
|
# define DWARF_VREG_LOC(c,r) (DWARF_LOC((unw_word_t) \
|
|
tdep_uc_addr((c)->as_arg, (r)), 0))
|
|
#else /* !UNW_LOCAL_ONLY */
|
|
|
|
# define DWARF_LOC_TYPE_FP (1 << 0)
|
|
# define DWARF_LOC_TYPE_REG (1 << 1)
|
|
# define DWARF_LOC_TYPE_V (1 << 2)
|
|
# define DWARF_NULL_LOC DWARF_LOC (0, 0)
|
|
# define DWARF_IS_NULL_LOC(l) \
|
|
({ dwarf_loc_t _l = (l); _l.val == 0 && _l.type == 0; })
|
|
# define DWARF_LOC(r, t) ((dwarf_loc_t) { .val = (r), .type = (t) })
|
|
# define DWARF_IS_REG_LOC(l) (((l).type & DWARF_LOC_TYPE_REG) != 0)
|
|
# define DWARF_IS_FP_LOC(l) (((l).type & DWARF_LOC_TYPE_FP) != 0)
|
|
# define DWARF_IS_V_LOC(l) (((l).type & DWARF_LOC_TYPE_V) != 0)
|
|
# define DWARF_MEM_LOC(c,m) DWARF_LOC ((m), 0)
|
|
# define DWARF_REG_LOC(c,r) DWARF_LOC((r), DWARF_LOC_TYPE_REG)
|
|
# define DWARF_FPREG_LOC(c,r) DWARF_LOC((r), (DWARF_LOC_TYPE_REG \
|
|
| DWARF_LOC_TYPE_FP))
|
|
# define DWARF_VREG_LOC(c,r) DWARF_LOC((r), (DWARF_LOC_TYPE_REG \
|
|
| DWARF_LOC_TYPE_V))
|
|
|
|
#endif /* !UNW_LOCAL_ONLY */
|
|
|
|
static inline int
|
|
dwarf_getvr (struct dwarf_cursor *c, dwarf_loc_t loc, unw_fpreg_t * val)
|
|
{
|
|
unw_word_t *valp = (unw_word_t *) val;
|
|
unw_word_t addr;
|
|
int ret;
|
|
|
|
if (DWARF_IS_NULL_LOC (loc))
|
|
return -UNW_EBADREG;
|
|
|
|
assert (DWARF_IS_V_LOC (loc));
|
|
assert (!DWARF_IS_FP_LOC (loc));
|
|
|
|
if (DWARF_IS_REG_LOC (loc))
|
|
return (*c->as->acc.access_fpreg) (c->as, DWARF_GET_LOC (loc),
|
|
val, 0, c->as_arg);
|
|
|
|
addr = DWARF_GET_LOC (loc);
|
|
|
|
if ((ret = (*c->as->acc.access_mem) (c->as, addr + 0, valp,
|
|
0, c->as_arg)) < 0)
|
|
return ret;
|
|
|
|
return (*c->as->acc.access_mem) (c->as, addr + 8, valp + 1, 0, c->as_arg);
|
|
}
|
|
|
|
static inline int
|
|
dwarf_putvr (struct dwarf_cursor *c, dwarf_loc_t loc, unw_fpreg_t val)
|
|
{
|
|
unw_word_t *valp = (unw_word_t *) & val;
|
|
unw_word_t addr;
|
|
int ret;
|
|
|
|
if (DWARF_IS_NULL_LOC (loc))
|
|
return -UNW_EBADREG;
|
|
|
|
assert (DWARF_IS_V_LOC (loc));
|
|
assert (!DWARF_IS_FP_LOC (loc));
|
|
|
|
if (DWARF_IS_REG_LOC (loc))
|
|
return (*c->as->acc.access_fpreg) (c->as, DWARF_GET_LOC (loc),
|
|
&val, 1, c->as_arg);
|
|
|
|
addr = DWARF_GET_LOC (loc);
|
|
if ((ret = (*c->as->acc.access_mem) (c->as, addr + 0, valp,
|
|
1, c->as_arg)) < 0)
|
|
return ret;
|
|
|
|
return (*c->as->acc.access_mem) (c->as, addr + 8, valp + 1, 1, c->as_arg);
|
|
}
|
|
|
|
static inline int
|
|
dwarf_getfp (struct dwarf_cursor *c, dwarf_loc_t loc, unw_fpreg_t * val)
|
|
{
|
|
unw_word_t *valp = (unw_word_t *) val;
|
|
unw_word_t addr;
|
|
|
|
if (DWARF_IS_NULL_LOC (loc))
|
|
return -UNW_EBADREG;
|
|
|
|
assert (DWARF_IS_FP_LOC (loc));
|
|
assert (!DWARF_IS_V_LOC (loc));
|
|
|
|
if (DWARF_IS_REG_LOC (loc))
|
|
return (*c->as->acc.access_fpreg) (c->as, DWARF_GET_LOC (loc),
|
|
val, 0, c->as_arg);
|
|
|
|
addr = DWARF_GET_LOC (loc);
|
|
return (*c->as->acc.access_mem) (c->as, addr + 0, valp, 0, c->as_arg);
|
|
|
|
}
|
|
|
|
static inline int
|
|
dwarf_putfp (struct dwarf_cursor *c, dwarf_loc_t loc, unw_fpreg_t val)
|
|
{
|
|
unw_word_t *valp = (unw_word_t *) & val;
|
|
unw_word_t addr;
|
|
|
|
if (DWARF_IS_NULL_LOC (loc))
|
|
return -UNW_EBADREG;
|
|
|
|
assert (DWARF_IS_FP_LOC (loc));
|
|
assert (!DWARF_IS_V_LOC (loc));
|
|
|
|
if (DWARF_IS_REG_LOC (loc))
|
|
return (*c->as->acc.access_fpreg) (c->as, DWARF_GET_LOC (loc),
|
|
&val, 1, c->as_arg);
|
|
|
|
addr = DWARF_GET_LOC (loc);
|
|
|
|
return (*c->as->acc.access_mem) (c->as, addr + 0, valp, 1, c->as_arg);
|
|
}
|
|
|
|
static inline int
|
|
dwarf_get (struct dwarf_cursor *c, dwarf_loc_t loc, unw_word_t * val)
|
|
{
|
|
if (DWARF_IS_NULL_LOC (loc))
|
|
return -UNW_EBADREG;
|
|
|
|
/* If a code-generator were to save a value of type unw_word_t in a
|
|
floating-point register, we would have to support this case. I
|
|
suppose it could happen with MMX registers, but does it really
|
|
happen? */
|
|
assert (!DWARF_IS_FP_LOC (loc));
|
|
assert (!DWARF_IS_V_LOC (loc));
|
|
|
|
if (DWARF_IS_REG_LOC (loc))
|
|
return (*c->as->acc.access_reg) (c->as, DWARF_GET_LOC (loc), val,
|
|
0, c->as_arg);
|
|
else
|
|
return (*c->as->acc.access_mem) (c->as, DWARF_GET_LOC (loc), val,
|
|
0, c->as_arg);
|
|
}
|
|
|
|
static inline int
|
|
dwarf_put (struct dwarf_cursor *c, dwarf_loc_t loc, unw_word_t val)
|
|
{
|
|
if (DWARF_IS_NULL_LOC (loc))
|
|
return -UNW_EBADREG;
|
|
|
|
/* If a code-generator were to save a value of type unw_word_t in a
|
|
floating-point register, we would have to support this case. I
|
|
suppose it could happen with MMX registers, but does it really
|
|
happen? */
|
|
assert (!DWARF_IS_FP_LOC (loc));
|
|
assert (!DWARF_IS_V_LOC (loc));
|
|
|
|
if (DWARF_IS_REG_LOC (loc))
|
|
return (*c->as->acc.access_reg) (c->as, DWARF_GET_LOC (loc), &val,
|
|
1, c->as_arg);
|
|
else
|
|
return (*c->as->acc.access_mem) (c->as, DWARF_GET_LOC (loc), &val,
|
|
1, c->as_arg);
|
|
}
|
|
|
|
#define tdep_getcontext_trace unw_getcontext
|
|
#define tdep_init_done UNW_OBJ(init_done)
|
|
#define tdep_init UNW_OBJ(init)
|
|
/* Platforms that support UNW_INFO_FORMAT_TABLE need to define
|
|
tdep_search_unwind_table. */
|
|
#define tdep_search_unwind_table dwarf_search_unwind_table
|
|
#define tdep_find_unwind_table dwarf_find_unwind_table
|
|
#define tdep_uc_addr UNW_ARCH_OBJ(uc_addr)
|
|
#define tdep_get_elf_image UNW_ARCH_OBJ(get_elf_image)
|
|
#define tdep_get_exe_image_path UNW_ARCH_OBJ(get_exe_image_path)
|
|
#define tdep_access_reg UNW_OBJ(access_reg)
|
|
#define tdep_access_fpreg UNW_OBJ(access_fpreg)
|
|
#define tdep_fetch_frame(c,ip,n) do {} while(0)
|
|
#define tdep_cache_frame(c) 0
|
|
#define tdep_reuse_frame(c,frame) do {} while(0)
|
|
#define tdep_stash_frame(c,rs) do {} while(0)
|
|
#define tdep_trace(cur,addr,n) (-UNW_ENOINFO)
|
|
#define tdep_get_func_addr UNW_OBJ(get_func_addr)
|
|
|
|
#ifdef UNW_LOCAL_ONLY
|
|
# define tdep_find_proc_info(c,ip,n) \
|
|
dwarf_find_proc_info((c)->as, (ip), &(c)->pi, (n), \
|
|
(c)->as_arg)
|
|
# define tdep_put_unwind_info(as,pi,arg) \
|
|
dwarf_put_unwind_info((as), (pi), (arg))
|
|
#else
|
|
# define tdep_find_proc_info(c,ip,n) \
|
|
(*(c)->as->acc.find_proc_info)((c)->as, (ip), &(c)->pi, (n), \
|
|
(c)->as_arg)
|
|
# define tdep_put_unwind_info(as,pi,arg) \
|
|
(*(as)->acc.put_unwind_info)((as), (pi), (arg))
|
|
#endif
|
|
|
|
extern int tdep_fetch_proc_info_post (struct dwarf_cursor *c, unw_word_t ip,
|
|
int need_unwind_info);
|
|
|
|
#define tdep_get_as(c) ((c)->dwarf.as)
|
|
#define tdep_get_as_arg(c) ((c)->dwarf.as_arg)
|
|
#define tdep_get_ip(c) ((c)->dwarf.ip)
|
|
#define tdep_big_endian(as) 1
|
|
|
|
extern int tdep_init_done;
|
|
|
|
extern void tdep_init (void);
|
|
extern int tdep_search_unwind_table (unw_addr_space_t as, unw_word_t ip,
|
|
unw_dyn_info_t * di,
|
|
unw_proc_info_t * pi,
|
|
int need_unwind_info, void *arg);
|
|
extern void *tdep_uc_addr (ucontext_t * uc, int reg);
|
|
extern int tdep_get_elf_image (struct elf_image *ei, pid_t pid, unw_word_t ip,
|
|
unsigned long *segbase, unsigned long *mapoff,
|
|
char *path, size_t pathlen);
|
|
extern void tdep_get_exe_image_path (char *path);
|
|
extern int tdep_access_reg (struct cursor *c, unw_regnum_t reg,
|
|
unw_word_t * valp, int write);
|
|
extern int tdep_access_fpreg (struct cursor *c, unw_regnum_t reg,
|
|
unw_fpreg_t * valp, int write);
|
|
extern int tdep_get_func_addr (unw_addr_space_t as, unw_word_t addr,
|
|
unw_word_t *entry_point);
|
|
|
|
#endif /* PPC64_LIBUNWIND_I_H */
|