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Bury the last_ip field until it can reappear in version 2.0.

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This commit is contained in:
Doug Moore 2017-05-12 23:45:56 -05:00
parent 1568d7afa2
commit bb61e0bc2b
4 changed files with 12 additions and 6 deletions
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6
doc/unw_get_proc_info.tex
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@ -31,12 +31,6 @@ following members:
instruction \emph{beyond} the end of the procedure. If this address
cannot be determined (e.g., due to lack of unwind information),
the \Var{end\_ip} member is cleared to 0. \\
\item[\Type{unw\_word\_t} \Var{last\_ip}] The address of the first
instruction that could begin another procedure. Addresses from
end\_ip up to last\_ip are addresses where there are no
instructions. If this address cannot be determined (e.g., due to
lack of unwind information), the \Var{end\_ip} member is cleared to
0. \\
\item[\Type{unw\_word\_t} \Var{lsda}] The address of the
language-specific data-area (LSDA). This area normally contains
language-specific information needed during exception handling. If

2
include/libunwind-common.h.in
View file

@ -126,7 +126,9 @@ typedef struct unw_proc_info
{
unw_word_t start_ip; /* first IP covered by this procedure */
unw_word_t end_ip; /* first IP NOT covered by this procedure */
#if defined(NEED_LAST_IP)
unw_word_t last_ip; /* first IP that could begin another procedure */
#endif
unw_word_t lsda; /* address of lang.-spec. data area (if any) */
unw_word_t handler; /* optional personality routine */
unw_word_t gp; /* global-pointer value for this procedure */

4
src/dwarf/Gfind_proc_info-lsb.c
View file

@ -898,7 +898,11 @@ dwarf_search_unwind_table (unw_addr_space_t as, unw_word_t ip,
pi->flags = UNW_PI_FLAG_DEBUG_FRAME;
}
#if defined(NEED_LAST_IP)
pi->last_ip = last_ip;
#else
(void)last_ip;
#endif
if (ip < pi->start_ip || ip >= pi->end_ip)
return -UNW_ENOINFO;

6
src/dwarf/Gparser.c
View file

@ -992,9 +992,15 @@ dwarf_reg_states_table_iterate(struct dwarf_cursor *c,
if (ret >= 0 && prev_ip < curr_ip)
ret = cb(token, &sr.rs_current, sizeof(sr.rs_current), prev_ip, curr_ip);
}
#if defined(NEED_LAST_IP)
if (ret >= 0 && curr_ip < c->pi.last_ip)
/* report the dead zone after the procedure ends */
ret = cb(token, &sr.rs_current, sizeof(sr.rs_current), curr_ip, c->pi.last_ip);
#else
if (ret >= 0 && curr_ip < c->pi.end_ip)
/* report for whatever is left before procedure end */
ret = cb(token, &sr.rs_current, sizeof(sr.rs_current), curr_ip, c->pi.end_ip);
#endif
return ret;
}