int4* find_line_addr (rhdtyp *routine, mstr *label, int4 offset, mident **lent_name)
{
lab_tabent *base, *top, *ptr;
rhdtyp *real_routine;
mident_fixed target_label;
mident lname;
lnr_tabent *line_table, *first_line;
int stat, n;
error_def(ERR_LABELONLY);
if (!routine)
return NULL;
real_routine = CURRENT_RHEAD_ADR(routine);
first_line = LNRTAB_ADR(real_routine);
if (!label->len || !*label->addr)
{ /* No label specified. Return the first line */
base = LABTAB_ADR(real_routine);
assert(0 == base->lab_name.len);
if (lent_name)
*lent_name = &base->lab_name;
line_table = first_line;
}
else
{
lname.len = (label->len <= MAX_MIDENT_LEN) ? label->len : MAX_MIDENT_LEN;
if (cmd_qlf.qlf & CQ_LOWER_LABELS)
lname.addr = label->addr;
else
{
lower_to_upper((uchar_ptr_t)&target_label.c[0], (uchar_ptr_t)label->addr, lname.len);
lname.addr = &target_label.c[0];
}
ptr = base = LABTAB_ADR(real_routine);
top = base + real_routine->labtab_len;
for ( ; ; )
{
n = (int)(top - base) / 2;
ptr = base + n;
MIDENT_CMP(&lname, &ptr->lab_name, stat);
if (0 == stat)
{
if (lent_name)
*lent_name = &ptr->lab_name;
line_table = LABENT_LNR_ENTRY(real_routine, ptr);
break;
}
else if (stat > 0)
base = ptr;
else
top = ptr;
if (n < 1)
return NULL;
}
}
line_table += offset;
if (line_table < first_line || line_table >= first_line + real_routine->lnrtab_len)
return NULL;
return line_table;
}
int gtm_trigger(gv_trigger_t *trigdsc, gtm_trigger_parms *trigprm)
{
mval *lvvalue;
lnr_tabent *lbl_offset_p;
uchar_ptr_t transfer_addr;
lv_val *lvval;
mname_entry *mne_p;
uint4 *indx_p;
ht_ent_mname *tabent;
boolean_t added;
int clrlen, rc, i, unwinds;
mval **lvvalarray;
mv_stent *mv_st_ent;
symval *new_symval;
uint4 dollar_tlevel_start;
stack_frame *fp, *fpprev;
DCL_THREADGBL_ACCESS;
SETUP_THREADGBL_ACCESS;
assert(!skip_dbtriggers); /* should not come here if triggers are not supposed to be invoked */
assert(trigdsc);
assert(trigprm);
assert((NULL != trigdsc->rtn_desc.rt_adr) || ((MV_STR & trigdsc->xecute_str.mvtype)
&& (0 != trigdsc->xecute_str.str.len)
&& (NULL != trigdsc->xecute_str.str.addr)));
assert(dollar_tlevel);
/* Determine if trigger needs to be compiled */
if (NULL == trigdsc->rtn_desc.rt_adr)
{ /* No routine hdr addr exists. Need to do compile */
if (0 != gtm_trigger_complink(trigdsc, TRUE))
{
PRN_ERROR; /* Leave record of what error caused the compilation failure if any */
rts_error(VARLSTCNT(4) ERR_TRIGCOMPFAIL, 2, trigdsc->rtn_desc.rt_name.len, trigdsc->rtn_desc.rt_name.addr);
}
}
assert(trigdsc->rtn_desc.rt_adr);
assert(trigdsc->rtn_desc.rt_adr == CURRENT_RHEAD_ADR(trigdsc->rtn_desc.rt_adr));
/* Setup trigger environment stack frame(s) for execution */
if (!(frame_pointer->type & SFT_TRIGR))
{ /* Create new trigger base frame first that back-stops stack unrolling and return to us */
if (GTM_TRIGGER_DEPTH_MAX < (gtm_trigger_depth + 1)) /* Verify we won't nest too deep */
rts_error(VARLSTCNT(3) ERR_MAXTRIGNEST, 1, GTM_TRIGGER_DEPTH_MAX);
DBGTRIGR((stderr, "gtm_trigger: PUSH: frame_pointer 0x%016lx ctxt value: 0x%016lx\n", frame_pointer, ctxt));
/* Protect against interrupts while we have only a trigger base frame on the stack */
DEFER_INTERRUPTS(INTRPT_IN_TRIGGER_NOMANS_LAND);
/* The current frame invoked a trigger. We cannot return to it for a TP restart or other reason unless
* either the total operation (including trigger) succeeds and we unwind normally or unless the mpc is reset
* (like what happens in various error or restart conditions) because right now it returns to where a database
* command (KILL, SET or ZTRIGGER) was entered. Set flag in the frame to prevent MUM_TSTART unless the frame gets
* reset.
*/
frame_pointer->flags |= SFF_TRIGR_CALLD; /* Do not return to this frame via MUM_TSTART */
DBGTRIGR((stderr, "gtm_trigger: Setting SFF_TRIGR_CALLD in frame 0x"lvaddr"\n", frame_pointer));
base_frame(trigdsc->rtn_desc.rt_adr);
/* Finish base frame initialization - reset mpc/context to return to us without unwinding base frame */
frame_pointer->type |= SFT_TRIGR;
# if defined(__hpux) && defined(__hppa)
/* For HPUX-HPPA (PA-RISC), we use longjmp() to return to gtm_trigger() to avoid some some space register
* corruption issues. Use call-ins already existing mechanism for doing this. Although we no longer support
* HPUX-HPPA for triggers due to some unlocated space register error, this code (effectively always ifdef'd
* out) left in in case it gets resurrected in the future (01/2010 SE).
*/
frame_pointer->mpc = CODE_ADDRESS(ci_ret_code);
frame_pointer->ctxt = GTM_CONTEXT(ci_ret_code);
# else
frame_pointer->mpc = CODE_ADDRESS(gtm_levl_ret_code);
frame_pointer->ctxt = GTM_CONTEXT(gtm_levl_ret_code);
# endif
/* This base stack frame is also where we save environmental info for all triggers invoked at this stack level.
* Subsequent triggers fired at this level in this trigger invocation need only reinitialize a few things but
* can avoid "the big save".
*/
if (NULL == trigr_symval_list)
{ /* No available symvals for use with this trigger, create one */
symbinit(); /* Initialize a symbol table the trigger will use */
curr_symval->trigr_symval = TRUE; /* Mark as trigger symval so will be saved not decommissioned */
} else
{ /* Trigger symval is available for reuse */
new_symval = trigr_symval_list;
assert(new_symval->trigr_symval);
trigr_symval_list = new_symval->last_tab; /* dequeue new curr_symval from list */
REINIT_SYMVAL_BLK(new_symval, curr_symval);
curr_symval = new_symval;
PUSH_MV_STENT(MVST_STAB);
mv_chain->mv_st_cont.mvs_stab = new_symval; /* So unw_mv_ent() can requeue it for later use */
}
/* Push our trigger environment save mv_stent onto the chain */
PUSH_MV_STENT(MVST_TRIGR);
mv_st_ent = mv_chain;
/* Initialize the mv_stent elements processed by stp_gcol which can be called by either op_gvsavtarg() or
* by the extnam saving code below. This initialization keeps stp_gcol - should it be called - from attempting
* to process unset fields filled with garbage in them as valid mstr address/length pairs.
*/
mv_st_ent->mv_st_cont.mvs_trigr.savtarg.str.len = 0;
mv_st_ent->mv_st_cont.mvs_trigr.savextref.len = 0;
mv_st_ent->mv_st_cont.mvs_trigr.dollar_etrap_save.str.len = 0;
mv_st_ent->mv_st_cont.mvs_trigr.dollar_ztrap_save.str.len = 0;
mv_st_ent->mv_st_cont.mvs_trigr.saved_dollar_truth = dollar_truth;
op_gvsavtarg(&mv_st_ent->mv_st_cont.mvs_trigr.savtarg);
if (extnam_str.len)
{
ENSURE_STP_FREE_SPACE(extnam_str.len);
mv_st_ent->mv_st_cont.mvs_trigr.savextref.addr = (char *)stringpool.free;
memcpy(mv_st_ent->mv_st_cont.mvs_trigr.savextref.addr, extnam_str.addr, extnam_str.len);
stringpool.free += extnam_str.len;
assert(stringpool.free <= stringpool.top);
}
mv_st_ent->mv_st_cont.mvs_trigr.savextref.len = extnam_str.len;
mv_st_ent->mv_st_cont.mvs_trigr.ztname_save = dollar_ztname;
mv_st_ent->mv_st_cont.mvs_trigr.ztdata_save = dollar_ztdata;
mv_st_ent->mv_st_cont.mvs_trigr.ztoldval_save = dollar_ztoldval;
mv_st_ent->mv_st_cont.mvs_trigr.ztriggerop_save = dollar_ztriggerop;
mv_st_ent->mv_st_cont.mvs_trigr.ztupdate_save = dollar_ztupdate;
mv_st_ent->mv_st_cont.mvs_trigr.ztvalue_save = dollar_ztvalue;
mv_st_ent->mv_st_cont.mvs_trigr.ztvalue_changed_ptr = ztvalue_changed_ptr;
# ifdef DEBUG
/* In a debug process, these fields give clues of what trigger we are working on */
mv_st_ent->mv_st_cont.mvs_trigr.gtm_trigdsc_last_save = trigdsc;
mv_st_ent->mv_st_cont.mvs_trigr.gtm_trigprm_last_save = trigprm;
# endif
assert(((0 == gtm_trigger_depth) && (ch_at_trigger_init == ctxt->ch))
|| ((0 < gtm_trigger_depth) && (&mdb_condition_handler == ctxt->ch)));
mv_st_ent->mv_st_cont.mvs_trigr.ctxt_save = ctxt;
mv_st_ent->mv_st_cont.mvs_trigr.gtm_trigger_depth_save = gtm_trigger_depth;
if (0 == gtm_trigger_depth)
{ /* Only back up $*trap settings when initiating the first trigger level */
mv_st_ent->mv_st_cont.mvs_trigr.dollar_etrap_save = dollar_etrap;
mv_st_ent->mv_st_cont.mvs_trigr.dollar_ztrap_save = dollar_ztrap;
mv_st_ent->mv_st_cont.mvs_trigr.ztrap_explicit_null_save = ztrap_explicit_null;
dollar_ztrap.str.len = 0;
ztrap_explicit_null = FALSE;
if (NULL != gtm_trigger_etrap.str.addr)
/* An etrap was defined for the trigger environment - Else existing $etrap persists */
dollar_etrap = gtm_trigger_etrap;
}
mv_st_ent->mv_st_cont.mvs_trigr.mumps_status_save = mumps_status;
mv_st_ent->mv_st_cont.mvs_trigr.run_time_save = run_time;
/* See if a MERGE launched the trigger. If yes, save some state so ZWRITE, ZSHOW and/or MERGE can be
* run in the trigger we dispatch. */
if ((0 != merge_args) || TREF(in_zwrite))
PUSH_MVST_MRGZWRSV;
mumps_status = 0;
run_time = TRUE; /* Previous value saved just above restored when frame pops */
} else
{ /* Trigger base frame exists so reinitialize the symbol table for new trigger invocation */
REINIT_SYMVAL_BLK(curr_symval, curr_symval->last_tab);
/* Locate the MVST_TRIGR mv_stent containing the backed up values. Some of those values need
* to be restored so the 2nd trigger has the same environment as the previous trigger at this level
*/
for (mv_st_ent = mv_chain;
(NULL != mv_st_ent) && (MVST_TRIGR != mv_st_ent->mv_st_type);
mv_st_ent = (mv_stent *)(mv_st_ent->mv_st_next + (char *)mv_st_ent))
;
assert(NULL != mv_st_ent);
assert((char *)mv_st_ent < (char *)frame_pointer); /* Ensure mv_stent associated this trigger frame */
/* Reinit backed up values from the trigger environment backup */
dollar_truth = mv_st_ent->mv_st_cont.mvs_trigr.saved_dollar_truth;
op_gvrectarg(&mv_st_ent->mv_st_cont.mvs_trigr.savtarg);
extnam_str.len = mv_st_ent->mv_st_cont.mvs_trigr.savextref.len;
if (extnam_str.len)
memcpy(extnam_str.addr, mv_st_ent->mv_st_cont.mvs_trigr.savextref.addr, extnam_str.len);
mumps_status = 0;
assert(run_time);
/* Note we do not reset the handlers for parallel triggers - set one time only when enter first level
* trigger. After that, whatever happens in trigger world, stays in trigger world.
*/
}
assert(frame_pointer->type & SFT_TRIGR);
# ifdef DEBUG
gtm_trigdsc_last = trigdsc;
gtm_trigprm_last = trigprm;
# endif
/* Set new value of trigger ISVs. Previous values already saved in trigger base frame */
dollar_ztname = &trigdsc->rtn_desc.rt_name;
dollar_ztdata = (mval *)trigprm->ztdata_new;
dollar_ztoldval = trigprm->ztoldval_new;
dollar_ztriggerop = (mval *)trigprm->ztriggerop_new;
dollar_ztupdate = trigprm->ztupdate_new;
dollar_ztvalue = trigprm->ztvalue_new;
ztvalue_changed_ptr = &trigprm->ztvalue_changed;
/* Set values associated with trigger into symbol table */
lvvalarray = trigprm->lvvalarray;
for (i = 0, mne_p = trigdsc->lvnamearray, indx_p = trigdsc->lvindexarray;
i < trigdsc->numlvsubs; ++i, ++mne_p, ++indx_p)
{ /* Once thru for each subscript we are to set */
lvvalue = lvvalarray[*indx_p]; /* Locate mval that contains value */
assert(NULL != lvvalue);
assert(MV_DEFINED(lvvalue)); /* No sense in defining the undefined */
lvval = lv_getslot(curr_symval); /* Allocate an lvval to put into symbol table */
LVVAL_INIT(lvval, curr_symval);
lvval->v = *lvvalue; /* Copy mval into lvval */
added = add_hashtab_mname_symval(&curr_symval->h_symtab, mne_p, lvval, &tabent);
assert(added);
assert(NULL != tabent);
}
/* While the routine header is available in trigdsc, we also need the <null> label address associated with
* the first (and only) line of code.
*/
lbl_offset_p = LNRTAB_ADR(trigdsc->rtn_desc.rt_adr);
transfer_addr = (uchar_ptr_t)LINE_NUMBER_ADDR(trigdsc->rtn_desc.rt_adr, lbl_offset_p);
/* Create new stack frame for invoked trigger in same fashion as gtm_init_env() creates its 2ndary frame */
# ifdef HAS_LITERAL_SECT
new_stack_frame(trigdsc->rtn_desc.rt_adr, (unsigned char *)LINKAGE_ADR(trigdsc->rtn_desc.rt_adr), transfer_addr);
# else
/* Any platform that does not follow pv-based linkage model either
* (1) uses the following calculation to determine the context pointer value, or
* (2) doesn't need a context pointer
*/
new_stack_frame(trigdsc->rtn_desc.rt_adr, PTEXT_ADR(trigdsc->rtn_desc.rt_adr), transfer_addr);
# endif
dollar_tlevel_start = dollar_tlevel;
assert(gv_target->gd_csa == cs_addrs);
gv_target->trig_local_tn = local_tn; /* Record trigger being driven for this global */
/* Invoke trigger generated code */
rc = gtm_trigger_invoke();
if (1 == rc)
{ /* Normal return code (from dm_start). Check if TP has been unwound or not */
assert(dollar_tlevel <= dollar_tlevel_start); /* Bigger would be quite the surprise */
if (dollar_tlevel < dollar_tlevel_start)
{ /* Our TP level was unwound during the trigger so throw an error */
DBGTRIGR((stderr, "gtm_trigger: $TLEVEL less than at start - throwing TRIGTLVLCHNG\n"));
gtm_trigger_fini(TRUE, FALSE); /* dump this trigger level */
rts_error(VARLSTCNT(4) ERR_TRIGTLVLCHNG, 2, trigdsc->rtn_desc.rt_name.len,
trigdsc->rtn_desc.rt_name.addr);
}
rc = 0; /* Be polite and return 0 for the (hopefully common) success case */
} else if (ERR_TPRETRY == rc)
{ /* We are restarting the entire transaction. There are two possibilities here:
* 1) This is a nested trigger level in which case we need to unwind further or
* the outer trigger level was created by M code. If either is true, just
* rethrow the TPRETRY error.
* 2) This is the outer trigger and the call to op_tstart() was done by our caller.
* In this case, we just return to our caller with a code signifying they need
* to restart the implied transaction.
*/
assert(dollar_tlevel && (tstart_trigger_depth <= gtm_trigger_depth));
if ((tstart_trigger_depth < gtm_trigger_depth) || !tp_pointer->implicit_tstart || !tp_pointer->implicit_trigger)
{ /* Unwind a trigger level to restart level or to next trigger boundary */
gtm_trigger_fini(FALSE, FALSE); /* Get rid of this trigger level - we won't be returning */
DBGTRIGR((stderr, "gtm_trigger: dm_start returned rethrow code - rethrowing ERR_TPRETRY\n"));
INVOKE_RESTART;
} else
{ /* It is possible we are restarting a transaction that never got around to creating a base
* frame yet the implicit TStart was done. So if there is no trigger base frame, do not
* run gtm_trigger_fini() but instead do the one piece of cleanup it does that we still need.
*/
assert(donot_INVOKE_MUMTSTART);
if (SFT_TRIGR & frame_pointer->type)
{ /* Normal case when TP restart unwinding back to implicit beginning */
gtm_trigger_fini(FALSE, FALSE);
DBGTRIGR((stderr, "gtm_trigger: dm_start returned rethrow code - returning to gvcst_<caller>\n"));
} else
{ /* Unusual case of trigger that died in no-mans-land before trigger base frame established.
* Remove the "do not return to me" flag only on non-error unwinds */
assert(tp_pointer->implicit_tstart);
assert(SFF_TRIGR_CALLD & frame_pointer->flags);
frame_pointer->flags &= SFF_TRIGR_CALLD_OFF;
DBGTRIGR((stderr, "gtm_trigger: turning off SFF_TRIGR_CALLD (1) in frame 0x"lvaddr"\n",
frame_pointer));
DBGTRIGR((stderr, "gtm_trigger: unwinding no-base-frame trigger for TP restart\n"));
}
}
/* Fall out and return ERR_TPRETRY to caller */
} else if (0 == rc)
/* We should never get a return code of 0. This would be out-of-design and a signal that something
* is quite broken. We cannot "rethrow" outside the trigger because it was not initially an error so
* mdb_condition_handler would have no record of it (rethrown errors must have originally occurred in
* or to be RE-thrown) and assert fail at best.
*/
GTMASSERT;
else
{ /* We have an unexpected return code due to some error during execution of the trigger that tripped
* gtm_trigger's safety handler (i.e. an error occurred in mdb_condition_handler() established by
* dm_start(). Since we are going to unwind the trigger frame and rethrow the error, we also have
* to unwind all the stack frames on top of the trigger frame. Figure out how many frames that is,
* unwind them all plus the trigger base frame before rethrowing the error.
*/
for (unwinds = 0, fp = frame_pointer; (NULL != fp) && !(SFT_TRIGR & fp->type); fp = fp->old_frame_pointer)
unwinds++;
assert((NULL != fp) && (SFT_TRIGR & fp->type));
GOFRAMES(unwinds, TRUE, FALSE);
assert((NULL != frame_pointer) && !(SFT_TRIGR & frame_pointer->type));
DBGTRIGR((stderr, "gtm_trigger: Unsupported return code (%d) - unwound %d frames and now rethrowing error\n",
rc, unwinds));
rts_error(VARLSTCNT(1) ERR_REPEATERROR);
}
return rc;
}
/* Routine to eliminate the zlinked trigger code for a given trigger about to be deleted. Operations performed
* differ depending on platform type (shared binary or not).
*/
void gtm_trigger_cleanup(gv_trigger_t *trigdsc)
{
rtn_tabent *rbot, *mid, *rtop;
mident *rtnname;
rhdtyp *rtnhdr;
textElem *telem;
int comp, size;
stack_frame *fp, *fpprev;
mname_entry key;
ht_ent_mname *tabent;
routine_source *src_tbl;
DCL_THREADGBL_ACCESS;
SETUP_THREADGBL_ACCESS;
/* First thing to do is release trigger source field if it exists */
if (0 < trigdsc->xecute_str.str.len)
{
free(trigdsc->xecute_str.str.addr);
trigdsc->xecute_str.str.len = 0;
trigdsc->xecute_str.str.addr = NULL;
}
/* Next thing to do is find the routine header in the rtn_names list so we can remove it. */
rtnname = &trigdsc->rtn_desc.rt_name;
rtnhdr = trigdsc->rtn_desc.rt_adr;
rbot = rtn_names;
rtop = rtn_names_end;
for (;;)
{ /* See if routine exists in list via a binary search which reverts to serial
search when # of items drops below the threshold S_CUTOFF.
*/
if ((rtop - rbot) < S_CUTOFF)
{
comp = -1;
for (mid = rbot; mid <= rtop ; mid++)
{
MIDENT_CMP(&mid->rt_name, rtnname, comp);
if (0 == comp)
break;
if (0 < comp)
GTMASSERT; /* Routine should be found */
}
break;
} else
{ mid = rbot + (rtop - rbot)/2;
MIDENT_CMP(&mid->rt_name, rtnname, comp);
if (0 == comp)
break;
else if (0 > comp)
{
rbot = mid + 1;
continue;
} else
{
rtop = mid - 1;
continue;
}
}
}
# ifdef DEBUG
assert(rtnhdr == mid->rt_adr);
/* Verify trigger routine we want to remove is not currently active. If it is, we need to GTMASSERT.
* Triggers are not like regular routines since they should only ever be referenced from the stack during a
* transaction. Likewise, we should only ever load the triggers as the first action in that transaction.
*/
for (fp = frame_pointer; fp ; fp = fpprev)
{
fpprev = fp->old_frame_pointer;
# ifdef GTM_TRIGGER
if (NULL != fpprev && SFT_TRIGR & fpprev->type)
fpprev = *(stack_frame **)(fpprev + 1);
# endif
/* Only one possible version of a trigger routine */
assert(USHBIN_ONLY(NULL) NON_USHBIN_ONLY(fp->rvector) == OLD_RHEAD_ADR(CURRENT_RHEAD_ADR(fp->rvector)));
assert(fp->rvector != rtnhdr);
}
# endif
/* Remove break points in this routine before rmv from rtntbl */
zr_remove(rtnhdr, BREAKMSG);
/* Release any $TEXT() info this trigger has loaded */
if (NULL != (TREF(rt_name_tbl)).base)
{
key.var_name = mid->rt_name;
COMPUTE_HASH_MNAME(&key);
if (NULL != (tabent = lookup_hashtab_mname(TADR(rt_name_tbl), &key))) /* note assignment */
{ /* We have a hash entry. Whether it has a value or not, it has a key name (if this is
* the first time this trigger is being deleted) that may be pointing into the routine we
* are about to remove. Migrate this key name to the stringpool.
*/
s2pool(&tabent->key.var_name);
if (NULL != tabent->value)
{ /* Has value, release the source. Entries and source are malloc'd in two blocks on UNIX */
src_tbl = (routine_source *)tabent->value;
if (NULL != src_tbl->srcbuff)
free(src_tbl->srcbuff);
free(src_tbl);
tabent->value = NULL;
}
}
}
/* Remove the routine from the rtn_table */
size = INTCAST((char *)rtn_names_end - (char *)mid);
if (0 < size)
memmove((char *)mid, (char *)(mid + 1), size); /* Remove this routine name from sorted table */
rtn_names_end--;
urx_remove(rtnhdr); /* Remove any unresolved entries */
# ifdef USHBIN_SUPPORTED
stp_move((char *)rtnhdr->literal_text_adr,
(char *)(rtnhdr->literal_text_adr + rtnhdr->literal_text_len));
GTM_TEXT_FREE(rtnhdr->ptext_adr); /* R/O releasable section */
free(rtnhdr->literal_adr); /* R/W releasable section part 1 */
free(rtnhdr->linkage_adr); /* R/W releasable section part 2 */
free(rtnhdr->labtab_adr); /* Usually non-releasable but triggers don't have labels so
* this is just cleaning up a dangling null malloc
*/
free(rtnhdr);
# else
# if (!defined(__linux__) && !defined(__CYGWIN__)) || !defined(__i386) || !defined(COMP_GTA)
# error Unsupported NON-USHBIN platform
# endif
/* For a non-shared binary platform we need to get an approximate addr range for stp_move. This is not
* done when a routine is replaced on these platforms but in this case we are able to due to the isolated
* environment if we only take the precautions of migrating potential literal text which may have been
* pointed to by any set environment variables.
* In this format, the only platform we support currently is Linux-x86 (i386) which uses GTM_TEXT_ALLOC
* to allocate special storage for it to put executable code in. We can access the storage header for
* this storage and find out how big it is and use that information to give stp_move a good range since
* the literal segment occurs right at the end of allocated storage (for which there is no pointer
* in the fileheader).
*/
telem = (textElem *)((char *)rtnhdr - offsetof(textElem, userStorage));
assert(TextAllocated == telem->state);
stp_move((char *)LNRTAB_ADR(rtnhdr) + (rtnhdr->lnrtab_len * SIZEOF(lnr_tabent)),
(char *)rtnhdr + telem->realLen);
GTM_TEXT_FREE(rtnhdr);
# endif
}
rhdtyp *make_mode (int mode_index)
{
rhdtyp *base_address;
lab_tabent *lbl;
lnr_tabent *lnr;
CODEBUF_TYPE *code;
dyn_modes *dmode;
int algnd_rtnhdr_size = (int)ROUND_UP2(SIZEOF(rhdtyp), SECTION_ALIGN_BOUNDARY);
int algnd_code_size = (int)ROUND_UP2(CODE_SIZE, NATIVE_WSIZE);
int algnd_lbltab_size = (int)ROUND_UP2(SIZEOF(lab_tabent), NATIVE_WSIZE);
int algnd_lnrtab_size = (int)ROUND_UP2(CODE_LINES * SIZEOF(lnr_tabent), NATIVE_WSIZE);
assert((DM_MODE == mode_index) || (CI_MODE == mode_index));
base_address = (rhdtyp *)GTM_TEXT_ALLOC(algnd_rtnhdr_size + algnd_code_size + algnd_lbltab_size + algnd_lnrtab_size);
memset(base_address, 0, algnd_rtnhdr_size + algnd_code_size + algnd_lbltab_size + algnd_lnrtab_size);
dmode = &our_modes[mode_index];
base_address->routine_name.len = dmode->rtn_name_len;
base_address->routine_name.addr = dmode->rtn_name;
base_address->ptext_adr = (unsigned char *)base_address + algnd_rtnhdr_size;
base_address->ptext_end_adr = (unsigned char *)base_address->ptext_adr + algnd_code_size;
base_address->lnrtab_adr = (lnr_tabent *)base_address->ptext_end_adr;
base_address->labtab_adr = (lab_tabent *)((unsigned char *)base_address + algnd_rtnhdr_size +
algnd_code_size + algnd_lnrtab_size);
base_address->lnrtab_len = CODE_LINES;
base_address->labtab_len = 1;
code = (CODEBUF_TYPE *)base_address->ptext_adr; /* start of executable code */
#ifdef __ia64
if (dyn_modes_type[mode_index][0] == 'C')
{
GEN_CALL_C(CODE_ADDRESS(dmode->func_ptr1)) /* line 0,1 */
} else
{
GEN_CALL_ASM(CODE_ADDRESS(dmode->func_ptr1)) /* line 0,1 */
}
#else
GEN_CALL(dmode->func_ptr1); /* line 0,1 */
#endif /* __ia64 */
#ifdef _AIX
if (CI_MODE == mode_index)
{
/* Following 2 instructions are generated to call the routine stored in GTM_REG_ACCUM.
* ci_restart would have loaded this register with the address of op_extcall/op_extexfun.
* On other platforms, ci_start usually invokes op_ext* which will return directly
* to the generated code. Since RS6000 doesn't support call instruction without altering
* return address register (LR), the workaround is to call op_ext* not from ci_restart
* but from this dummy code
*/
*code++ = RS6000_INS_MTLR | GTM_REG_ACCUM << RS6000_SHIFT_RS;
*code++ = RS6000_INS_BRL;
}
#endif
#ifdef __ia64
if (dyn_modes_type[mode_index][1] == 'C')
{
GEN_CALL_C(CODE_ADDRESS(dmode->func_ptr2))
} else
{
GEN_CALL_ASM(CODE_ADDRESS(dmode->func_ptr2))
}
#else
GEN_CALL(dmode->func_ptr2);
#endif /* __ia64 */
#if defined (__ia64)
if (DM_MODE == mode_index)
{
GEN_UNCOD_JUMP(-(2 * 5)); /* branch to dm_setup which is at the top of the direct mode frame. */
}
#elif defined(__hpux)
if (DM_MODE == mode_index)
{
*code++ = HPPA_INS_BEQ | (MAKE_COND_BRANCH_TARGET(-8) << HPPA_SHIFT_OFFSET); /* BEQ r0,r0, -8 */
*code++ = HPPA_INS_NOP;
}
#endif /* __ia64 */
#ifdef __ia64
if (dyn_modes_type[mode_index][2] == 'C')
{
GEN_CALL_C(CODE_ADDRESS(dmode->func_ptr3)); /* line 2 */
} else
{
GEN_CALL_ASM(CODE_ADDRESS(dmode->func_ptr3)); /* line 2 */
}
#else
GEN_CALL(dmode->func_ptr3); /* line 2 */
#endif /* __ia64 */
lnr = LNRTAB_ADR(base_address);
*lnr++ = 0; /* line 0 */
*lnr++ = 0; /* line 1 */
IA64_ONLY(*lnr++ = 2 * CALL_SIZE + EXTRA_INST_SIZE;) /* line 2 */
