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(unw_proc_info_t): Remove proc_name member and replace it with unw_get_proc_name().

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The former didn't work because of memory management issues (there was no
	reasonable way to allocate/free the memory needed for the string).
	Shorten unwind_info_size from size_t to int.
(unw_accessors_t): Add new callbacks put_unwind_info() and get_dyn_info_list_addr().
(unw_create_addr_space): Take byte-order as second argument.
(unw_get_proc_name): New routine.
(unw_find_dynamic_proc_info): Remove (it's brother is in internal.h now).
(unw_flush_cache): Add missing declaration.
(unw_set_caching_policy): Ditto.

(Logical change 1.30)
This commit is contained in:
mostang.com!davidm 2002-12-12 09:17:41 +00:00
parent 4b3e3e5f9f
commit b6251b0f41
1 changed files with 42 additions and 15 deletions
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57
include/libunwind-common.h
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@ -126,11 +126,10 @@ typedef struct unw_proc_info
unw_word_t handler; /* optional personality routine */
unw_word_t gp; /* global-pointer value for this procedure */
unw_word_t flags; /* misc. flags */
const char *proc_name; /* optional name of procedure */
int format; /* unwind-info format (arch-specific) */
int unwind_info_size; /* size of the informat (if applicable) */
void *unwind_info; /* unwind-info (arch-specific) */
size_t unwind_info_size; /* size of the informat (if applicable) */
}
unw_proc_info_t;
@ -142,9 +141,26 @@ typedef struct unw_accessors
/* Look up the unwind info associated with instruction-pointer IP.
On success, the routine fills in the PROC_INFO structure. */
int (*find_proc_info) (unw_addr_space_t as, unw_word_t ip,
unw_proc_info_t *proc_info, void *arg);
unw_proc_info_t *proc_info,
int need_unwind_info,
void *arg);
/* Access aligned word at address ADDR. */
/* Release any resources (e.g., memory) that were allocated for
the unwind info returned in by a previous call to
find_proc_info() with NEED_UNWIND_INFO set to 1. */
void (*put_unwind_info) (unw_addr_space_t as, unw_proc_info_t *proc_info,
void *arg);
/* Return the list-head of the dynamically registered unwind
info. */
int (*get_dyn_info_list_addr) (unw_addr_space_t as,
unw_word_t *dyn_info_list_addr,
void *arg);
/* Access aligned word at address ADDR. The value is returned
according to the endianness of the host (e.g., if the host is
little-endian and the target is big-endian, access_mem() needs
to byte-swap the value before returning it). */
int (*access_mem) (unw_addr_space_t as, unw_word_t addr,
unw_word_t *val, int write, void *arg);
@ -187,7 +203,8 @@ unw_save_loc_t;
extern unw_addr_space_t UNW_OBJ(local_addr_space);
extern unw_addr_space_t UNW_OBJ(create_addr_space) (unw_accessors_t *a);
extern unw_addr_space_t UNW_OBJ(create_addr_space) (unw_accessors_t *a,
int byte_order);
extern unw_accessors_t *UNW_OBJ(get_accessors) (unw_addr_space_t as);
extern void UNW_OBJ(destroy_addr_space) (unw_addr_space_t as);
extern int UNW_OBJ(init_local) (unw_cursor_t *c, ucontext_t *u);
@ -203,16 +220,24 @@ extern int UNW_OBJ(set_fpreg) (unw_cursor_t *c, int regnum, unw_fpreg_t val);
extern int UNW_OBJ(get_save_loc) (unw_cursor_t *c, int regnum,
unw_save_loc_t *loc);
extern int UNW_OBJ(is_signal_frame) (unw_cursor_t *c);
extern int UNW_OBJ(get_proc_name) (unw_cursor_t *c, char *buf, size_t buf_len);
extern const char *UNW_ARCH_OBJ(regname) (int regnum);
extern int UNW_OBJ(find_dynamic_proc_info) (unw_addr_space_t as, unw_word_t ip,
unw_proc_info_t *pi, void *arg);
extern void UNW_OBJ(flush_cache)(unw_addr_space_t as,
unw_word_t lo, unw_word_t hi);
extern int UNW_OBJ(set_caching_policy)(unw_addr_space_t as,
unw_caching_policy_t policy);
#define unw_local_addr_space UNW_OBJ(local_addr_space)
/* Create a new address space (in addition to the default
local_addr_space).
local_addr_space). BYTE_ORDER can be 0 to select the default
byte-order or one of the byte-order values defined by <endian.h>
(e.g., __LITLE_ENDIAN or __BIG_ENDIAN). The default byte-order is
either implied by the target architecture (e.g., x86 is always
little-endian) or is select based on the byte-order of the host.
This routine is NOT signal-safe. */
#define unw_create_addr_space(a) UNW_OBJ(create_addr_space)(a)
#define unw_create_addr_space(a,b) UNW_OBJ(create_addr_space)(a,b)
/* Retrieve a pointer to the accessors structure associated with
address space AS.
@ -274,6 +299,14 @@ extern int UNW_OBJ(find_dynamic_proc_info) (unw_addr_space_t as, unw_word_t ip,
This routine is signal-safe. */
#define unw_is_signal_frame(c) UNW_OBJ(is_signal_frame)(c)
/* Return the name of the procedure that created the frame identified
by the cursor. The returned string is ASCII NUL terminated. If the
string buffer is too small to store the entire name, the first
portion of the string that can fit is stored in the buffer (along
with a terminating NUL character) and -UNW_ENOMEM is returned. If
no name can be determined, -UNW_ENOINFO is returned. */
#define unw_get_proc_name(c,s,l) UNW_OBJ(get_proc_name)(c, s, l)
/* Returns the canonical register name of register R. R must be in
the range from 0 to UNW_REG_LAST. Like all other unwind routines,
this one is re-entrant (i.e., the returned string must be a string
@ -301,9 +334,3 @@ extern int UNW_OBJ(find_dynamic_proc_info) (unw_addr_space_t as, unw_word_t ip,
to dlclose()).
This routine is signal-safe. */
#define unw_flush_cache(as,lo,hi) UNW_OBJ(flush_cache)(as, lo, hi)
/* Locate the procedure info for instruction pointer IP, assuming
the procedure was registered dynamically (at runtime).
This routine is signal-safe. */
#define unw_find_dynamic_proc_info(as,ip,pi,arg) \
UNW_OBJ(find_dynamic_proc_info)(as, ip, pi, arg)