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Include "offsets.h" instead of <signal.h> to enable cross-compilation.

Browse source 
Use offsets defined in this file instead of calculating the offsets
from sigcontext structure.

(update_frame_state): Rename from ia64_get_frame_state() and make it
static and inlined.

(unw_step): Call update_frame_state() instead of ia64_get_frame_state().

(Logical change 1.5)
This commit is contained in:
(none)!davidm 2002-02-22 21:58:53 +00:00
parent 172cc2ba9b
commit 3790561497
1 changed files with 12 additions and 17 deletions
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29
src/ia64/unw_step.c
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@ -21,13 +21,12 @@ This exception does not however invalidate any other reasons why the
executable file might be covered by the GNU General Public
License. */
#include <signal.h>
#include "offsets.h"
#include "rse.h"
#include "unwind_i.h"
int
ia64_get_frame_state (struct ia64_cursor *c)
static inline int
update_frame_state (struct ia64_cursor *c)
{
unw_word_t prev_ip, prev_sp, prev_bsp, ip, pr, num_regs, cfm;
int ret;
@ -36,8 +35,8 @@ ia64_get_frame_state (struct ia64_cursor *c)
prev_sp = c->sp;
prev_bsp = c->bsp;
/* restore the ip */
ret = ia64_get (c, c->rp_loc, &ip);
/* update the IP cache: */
ret = ia64_get (c, c->ip_loc, &ip);
if (ret < 0)
return ret;
c->ip = ip;
@ -45,8 +44,7 @@ ia64_get_frame_state (struct ia64_cursor *c)
if ((ip & 0xf) != 0)
{
/* don't let obviously bad addresses pollute the cache */
debug (1, "%s: rejecting bad ip=0x%lx\n", __FUNCTION__, c->ip);
c->rp_loc = 0;
debug (1, "%s: rejecting bad ip=0x%lx\n", __FUNCTION__, (long) c->ip);
return -UNW_EINVALIDIP;
}
@ -64,8 +62,7 @@ ia64_get_frame_state (struct ia64_cursor *c)
if (ret < 0)
return ret;
ret = ia64_get (c, (sigcontext_addr
+ struct_offset (struct sigcontext, sc_flags)),
ret = ia64_get (c, (sigcontext_addr + SIGCONTEXT_FLAGS_OFF),
&sigcontext_flags);
if (ret < 0)
return ret;
@ -80,8 +77,7 @@ ia64_get_frame_state (struct ia64_cursor *c)
num_regs = cfm & 0x7f; /* size of frame */
}
c->pfs_loc = (c->sp + 0x10 + struct_offset (struct sigcontext,
sc_ar_pfs));
c->pfs_loc = (c->sp + 0x10 + SIGCONTEXT_AR_PFS_OFF);
}
else
{
@ -90,16 +86,15 @@ ia64_get_frame_state (struct ia64_cursor *c)
return ret;
num_regs = (cfm >> 7) & 0x7f; /* size of locals */
}
c->bsp = (unsigned long) ia64_rse_skip_regs ((unsigned long *) c->bsp,
-num_regs);
c->bsp = ia64_rse_skip_regs (c->bsp, -num_regs);
/* restore the sp: */
c->sp = c->psp;
if (c->ip == prev_ip && c->sp == prev_sp && c->bsp == prev_bsp)
{
dprintf ("%s: ip, sp, bsp remain unchanged; stopping here (ip=0x%lx)\n",
__FUNCTION__, ip);
dprintf ("%s: ip, sp, and bsp unchanged; stopping here (ip=0x%lx)\n",
__FUNCTION__, (long) ip);
STAT(unw.stat.api.unwind_time += ia64_get_itc () - start);
return -UNW_EBADFRAME;
}
@ -126,7 +121,7 @@ unw_step (unw_cursor_t *cursor)
if (ret < 0)
return ret;
ret = ia64_get_frame_state (c);
ret = update_frame_state (c);
if (ret < 0)
return ret;