Hi all
I need something like this
__addressmod AREA_NAME;
AREA_NAME int var[10];
so I can do sdcc -b AREA_NAME=0xA000 ...
and place "var" (and possibly other variables) in special area, started at
0xA000. But its is not supported by SDCC so I made some patches to source
code and get it to work. I want some expert opinion to make sure that it is
not creating any problems in normal working of compiler and maybe add this
to the source code, it is a nice feature to have.
--- SDCCnaddr.cc 2017-11-13 15:27:56.000000000 +0330
+++ sdcc-3.9.0/src/SDCCnaddr.cc 2020-03-03 19:35:34.326969900 +0330
@@ -66,7 +66,12 @@
create_cfg_naddr(control_flow_graph, ic, ebbi);
annotate_cfg_naddr(control_flow_graph, addrspaces);
-
+ {
+ //mymod
+ auto itr = addrspaces.begin();
+ if(addrspaces.size()>0)
+ if(!itr->second->addressmod[0]) return -1;
+ }
if(options.dump_graphs)
dump_cfg_naddr(control_flow_graph);
--- SDCCopt.c 2019-03-29 09:53:07.000000000 +0430
+++ sdcc-3.9.0/src/SDCCopt.c 2020-03-03 19:16:04.378813000 +0330
@@ -1516,6 +1516,8 @@
switchAddressSpaceAt (iCode *ic, const symbol *const addrspace)
{
iCode *newic;
+ //mymod
+ if(addrspace->addressmod[0] == 0)return;
const symbol *const laddrspace = getAddrspaceiCode (ic);
wassertl(!laddrspace || laddrspace == addrspace, "Switching to invalid
address space.");
@@ -3225,6 +3227,7 @@
other support routines, since we can assume that there is no
bank switching happening in those other support routines
(but assume that it can happen in other functions) */
+//mymod
adjustIChain (ebbi->bbOrder, ebbi->count);
ic = iCodeLabelOptimize (iCodeFromeBBlock (ebbi->bbOrder, ebbi->count));
if (!currFunc || switchAddressSpacesOptimally (ic, ebbi))
--- SDCC.y 2019-01-28 13:59:40.000000000 +0330
+++ sdcc-3.9.0/src/SDCC.y 2020-03-02 23:26:50.493479000 +0330
@@ -2457,6 +2457,16 @@
SPEC_CONST(type) = 1;
sym->type = sym->etype = type;
}
+ | ADDRESSMOD identifier ';' { //mymod
+ symbol *sym;
+ if ((sym = findSymWithLevel (AddrspaceTab, $2)) && sym->level ==
$2->level)
+ werrorfl (sym->fileDef, sym->lineDef, E_PREVIOUS_DEF);
+ addSym (AddrspaceTab, $2, $2->name, $2->level, $2->block, 0);
+ sym = findSymWithLevel (AddrspaceTab, $2);
+ sym->addressmod[0] = 0;
+ sym->addressmod[1] = 0;
+ }
+
;
identifier
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