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#! /usr/bin/awk -f
# Contributed by Christian MICHON <christian_michon@yahoo.fr> to
# eliminate the compile time dependancy on perl introduced by
# Erik's older initfini.pl
# vim:ai:sw=2:
BEGIN \
{ alignval="";
endp=0;
end=0;
system("touch crt[in].S");
system("/bin/rm -f crt[in].S");
omitcrti=0;
omitcrtn=0;
glb_idx = 0;
while(getline < "initfini.S")
{ if(/\.endp/) {endp=1}
if(/\.end/) {end=1}
if(/\.align/) {alignval=$2}
# here comes some special stuff for the SuperH targets
# We search for all labels, which uses the _GLOBAL_OFFSET_TABLE_
# or a call_gmon_start function reference, and store
# them in the glb_label array.
if(/_init_EPILOG_BEGINS/) {glb_idx=1;glb_idx_arr[glb_idx]=0}
if(/_fini_EPILOG_BEGINS/) {glb_idx=2;glb_idx_arr[glb_idx]=0}
if(/EPILOG_ENDS/) {glb_idx=0}
if(/_GLOBAL_OFFSET_TABLE_/||/call_gmon_start/) {
glb_label[glb_idx,glb_idx_arr[glb_idx]] = last;
glb_idx_arr[glb_idx] += 1;
glb_label[glb_idx,glb_idx_arr[glb_idx]] = $0;
glb_idx_arr[glb_idx] += 1;
}
last = $1;
}
close("initfini.S");
}
# special rules for the SuperH targets (They do nothing on other targets)
/SH_GLB_BEGINS/ && glb_idx_arr[1]==0 && glb_idx_arr[2]==0 {omitcrti +=1}
/_init_SH_GLB/ {glb_idx=1}
/_fini_SH_GLB/ {glb_idx=2}
/SH_GLB_ENDS/ {omitcrti -=1}
/SH_GLB/ \
{
if (glb_idx>0)
{
for (i=0;i<glb_idx_arr[glb_idx];i+=1) {
print glb_label[glb_idx,i] >> "crti.S";
}
glb_idx = 0;
}
next;
}
# special rules for H8/300 (sorry quick hack)
/.h8300h/ {end=0}
# rules for all targets
/HEADER_ENDS/{omitcrti=1;omitcrtn=1;getline}
/PROLOG_BEGINS/{omitcrti=0;omitcrtn=0;getline}
/i_am_not_a_leaf/{getline}
/_init:/||/_fini:/{omitcrtn=1}
/PROLOG_PAUSES/{omitcrti=1;getline}
/PROLOG_UNPAUSES/{omitcrti=0;getline}
/PROLOG_ENDS/{omitcrti=1;getline}
/EPILOG_BEGINS/{omitcrtn=0;getline}
/EPILOG_ENDS/{omitcrtn=1;getline}
/TRAILER_BEGINS/{omitcrti=0;omitcrtn=0;getline}
/GMON_STUFF_BEGINS/{omitcrtn=1;getline}
/GMON_STUFF_PAUSES/{omitcrtn=0;getline}
/GMON_STUFF_UNPAUSES/{omitcrtn=1;getline}
/GMON_STUFF_ENDS/{omitcrtn=0;getline}
/_GLOBAL_OFFSET_TABLE_/||/gmon_start/ \
{
if(omitcrti==0) {print >> "crti.S";}
next; # no gmon_start or GLOBAL_OFFSET_TABLE references in crtn.S
}
/END_INIT/ \
{ if(endp)
{ gsub("END_INIT",".endp _init",$0)
}
else
{ if(end)
{ gsub("END_INIT",".end _init",$0)
}
else
{ gsub("END_INIT","",$0)
}
}
}
/END_FINI/ \
{ if(endp)
{ gsub("END_FINI",".endp _fini",$0)
}
else
{ if(end)
{ gsub("END_FINI",".end _fini",$0)
}
else
{ gsub("END_FINI","",$0)
}
}
}
/ALIGN/ \
{ if(alignval!="")
{ gsub("ALIGN",sprintf(".align %s",alignval),$0)
}
else
{ gsub("ALIGN","",$0)
}
}
omitcrti==0 {print >> "crti.S"}
omitcrtn==0 {print >> "crtn.S"}
END \
{ close("crti.S");
close("crtn.S");
}
|
