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* don't use a_call_ref because it can use a parameter register

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as temp
This commit is contained in:
peter 2003-09-14 19:17:39 +00:00
parent 5a5b42e927
commit bf0d3c730f
1 changed files with 59 additions and 91 deletions
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150
compiler/ncgcal.pas
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@ -553,6 +553,9 @@ implementation
href,helpref : treference;
para_alignment,
pop_size : longint;
{$ifndef usecallref}
pvreg,
{$endif usecallref}
vmtreg,vmtreg2 : tregister;
oldaktcallnode : tcallnode;
@ -646,47 +649,9 @@ implementation
if (procdefinition.proccalloption in [pocall_cdecl,pocall_cppdecl,pocall_stdcall]) then
para_alignment:=4
para_alignment:=4
else
para_alignment:=aktalignment.paraalign;
{ proc variables destroy all registers }
if (right=nil) and
{ virtual methods too }
not(po_virtualmethod in procdefinition.procoptions) then
begin
if (cs_check_io in aktlocalswitches) and
(po_iocheck in procdefinition.procoptions) and
not(po_iocheck in current_procinfo.procdef.procoptions) then
begin
objectlibrary.getaddrlabel(iolabel);
cg.a_label(exprasmlist,iolabel);
end
else
iolabel:=nil;
(*
regs_to_alloc:=Tprocdef(procdefinition).usedintregisters;
{$ifdef i386}
regs_to_push_other := tprocdef(procdefinition).usedotherregisters;
{$else i386}
regs_to_push_other := VOLATILE_FPUREGISTERS;
{$endif i386}
{ on the ppc, ever procedure saves the non-volatile registers it uses itself }
{ and must make sure it saves its volatile registers before doing a call }
{$ifdef i386}
{ give used registers through }
rg.used_in_proc_int:=rg.used_in_proc_int + tprocdef(procdefinition).usedintregisters;
rg.used_in_proc_other:=rg.used_in_proc_other + tprocdef(procdefinition).usedotherregisters;
{$endif i386}
*)
end
else
begin
{ no IO check for methods and procedure variables }
iolabel:=nil;
end;
para_alignment:=aktalignment.paraalign;
regs_to_alloc:=paramanager.get_volatile_registers_int(procdefinition.proccalloption);
regs_to_push_other:=paramanager.get_volatile_registers_fpu(procdefinition.proccalloption);
@ -801,14 +766,28 @@ implementation
vmtreg2:=rg.getabtregisterint(exprasmlist,OS_ADDR);
rg.ungetregisterint(exprasmlist,vmtreg2);
cg.a_load_reg_reg(exprasmlist,OS_ADDR,OS_ADDR,vmtreg,vmtreg2);
{$ifndef usecallref}
pvreg:=rg.getabtregisterint(exprasmlist,OS_ADDR);
reference_reset_base(href,vmtreg2,
tprocdef(procdefinition)._class.vmtmethodoffset(tprocdef(procdefinition).extnumber));
rg.ungetregisterint(exprasmlist,pvreg);
cg.a_load_ref_reg(exprasmlist,OS_ADDR,OS_ADDR,href,pvreg);
{$endif usecallref}
{ free the resources allocated for the parameters }
freeparas;
rg.allocexplicitregistersint(exprasmlist,regs_to_alloc);
{ call method }
{$ifdef usecallref}
reference_reset_base(href,vmtreg2,
tprocdef(procdefinition)._class.vmtmethodoffset(tprocdef(procdefinition).extnumber));
cg.a_call_ref(exprasmlist,href);
{$else usecallref}
cg.a_call_reg(exprasmlist,pvreg);
{$endif usecallref}
end
else
begin
@ -829,6 +808,8 @@ implementation
{$ifdef i386}
secondpass(right);
{$endif i386}
{$ifdef usecallref}
if right.location.loc in [LOC_REFERENCE,LOC_CREFERENCE] then
begin
helpref:=right.location.reference;
@ -850,26 +831,38 @@ implementation
end
else
rg.ungetregisterint(exprasmlist,right.location.register);
location_freetemp(exprasmlist,right.location);
{$else usecallref}
pvreg:=rg.getabtregisterint(exprasmlist,OS_ADDR);
rg.ungetregisterint(exprasmlist,pvreg);
{ Only load OS_ADDR from the reference }
if right.location.loc in [LOC_REFERENCE,LOC_CREFERENCE] then
cg.a_load_ref_reg(exprasmlist,OS_ADDR,OS_ADDR,right.location.reference,pvreg)
else
cg.a_load_loc_reg(exprasmlist,OS_ADDR,right.location,pvreg);
location_release(exprasmlist,right.location);
location_freetemp(exprasmlist,right.location);
{$endif usecallref}
{ free the resources allocated for the parameters }
freeparas;
rg.allocexplicitregistersint(exprasmlist,regs_to_alloc);
{ Calling interrupt from the same code requires some
extra code }
if (po_interrupt in procdefinition.procoptions) then
extra_interrupt_code;
rg.saveotherregvars(exprasmlist,ALL_OTHERREGISTERS);
if right.location.loc in [LOC_REFERENCE,LOC_CREFERENCE] then
cg.a_call_ref(exprasmlist,helpref)
else
cg.a_call_reg(exprasmlist,right.location.register);
{ cg.a_call_loc(exprasmlist,right.location);}
location_release(exprasmlist,right.location);
location_freetemp(exprasmlist,right.location);
rg.saveotherregvars(exprasmlist,ALL_OTHERREGISTERS);
{$ifdef usecallref}
if right.location.loc in [LOC_REFERENCE,LOC_CREFERENCE] then
cg.a_call_ref(exprasmlist,helpref)
else
cg.a_call_reg(exprasmlist,right.location.register);
{$else usecallref}
cg.a_call_reg(exprasmlist,pvreg);
{$endif usecallref}
end;
{ Need to remove the parameters from the stack? }
@ -926,11 +919,13 @@ implementation
location_reset(location,LOC_VOID,OS_NO);
{ perhaps i/o check ? }
if iolabel<>nil then
if (cs_check_io in aktlocalswitches) and
(po_iocheck in procdefinition.procoptions) and
not(po_iocheck in current_procinfo.procdef.procoptions) and
{ no IO check for methods and procedure variables }
(right=nil) and
not(po_virtualmethod in procdefinition.procoptions) then
begin
//reference_reset_symbol(href,iolabel,0);
//cg.a_paramaddr_ref(exprasmlist,href,paramanager.getintparaloc(exprasmlist,1));
//paramanager.freeintparaloc(exprasmlist,1);
rg.allocexplicitregistersint(exprasmlist,paramanager.get_volatile_registers_int(pocall_default));
cg.a_call_name(exprasmlist,'FPC_IOCHECK');
rg.deallocexplicitregistersint(exprasmlist,paramanager.get_volatile_registers_int(pocall_default));
@ -976,8 +971,6 @@ implementation
unusedstate: pointer;
pushedother : tpushedsavedother;
oldpushedparasize : longint;
{ adress returned from an I/O-error }
iolabel : tasmlabel;
oldaktcallnode : tcallnode;
oldprocdef : tprocdef;
i : longint;
@ -1103,7 +1096,6 @@ implementation
end;
{$endif GDB}
iolabel:=nil;
rg.saveunusedstate(unusedstate);
{ if we allocate the temp. location for ansi- or widestrings }
@ -1119,22 +1111,8 @@ implementation
cg.g_decrrefcount(exprasmlist,resulttype.def,refcountedtemp,false);
end;
if (cs_check_io in aktlocalswitches) and
(po_iocheck in procdefinition.procoptions) and
not(po_iocheck in current_procinfo.procdef.procoptions) then
begin
objectlibrary.getaddrlabel(iolabel);
cg.a_label(exprasmlist,iolabel);
end
else
iolabel:=nil;
{ save all used registers and possible registers
used for the return value }
(*
regs_to_push_int := tprocdef(procdefinition).usedintregisters;
regs_to_push_other := tprocdef(procdefinition).usedotherregisters;
*)
regs_to_push_int:=paramanager.get_volatile_registers_int(procdefinition.proccalloption);
regs_to_push_other:=paramanager.get_volatile_registers_fpu(procdefinition.proccalloption);
if (not is_void(resulttype.def)) then
@ -1157,14 +1135,6 @@ implementation
rg.saveusedotherregisters(exprasmlist,pushedother,regs_to_push_other);
(*
{$ifdef i386}
{ give used registers through }
rg.used_in_proc_int:=rg.used_in_proc_int + tprocdef(procdefinition).usedintregisters;
rg.used_in_proc_other:=rg.used_in_proc_other + tprocdef(procdefinition).usedotherregisters;
{$endif i386}
*)
{ Initialize for pushing the parameters }
oldpushedparasize:=pushedparasize;
pushedparasize:=0;
@ -1232,14 +1202,6 @@ implementation
tg.UnGetTemp(exprasmlist,pararef);
current_procinfo.procdef.parast.address_fixup:=old_para_fixup;
end;
{ free return reference }
if (resulttype.def.size>0) then
begin
{ from now on the result can be freed normally }
// if assigned(funcretnode) and
// paramanager.ret_in_param(resulttype.def,procdefinition.proccalloption) then
// tg.ChangeTempType(exprasmlist,funcretnode.location.reference,tt_normal);
end;
{ handle function results }
if (not is_void(resulttype.def)) then
@ -1248,11 +1210,13 @@ implementation
location_reset(location,LOC_VOID,OS_NO);
{ perhaps i/o check ? }
if iolabel<>nil then
if (cs_check_io in aktlocalswitches) and
(po_iocheck in procdefinition.procoptions) and
not(po_iocheck in current_procinfo.procdef.procoptions) and
{ no IO check for methods and procedure variables }
(right=nil) and
not(po_virtualmethod in procdefinition.procoptions) then
begin
//reference_reset_symbol(href,iolabel,0);
//cg.a_paramaddr_ref(exprasmlist,href,paramanager.getintparaloc(exprasmlist,1));
//paramanager.freeintparaloc(exprasmlist,1);
rg.allocexplicitregistersint(exprasmlist,paramanager.get_volatile_registers_int(pocall_default));
cg.a_call_name(exprasmlist,'FPC_IOCHECK');
rg.deallocexplicitregistersint(exprasmlist,paramanager.get_volatile_registers_int(pocall_default));
@ -1335,7 +1299,11 @@ begin
end.
{
$Log$
Revision 1.113 2003-09-11 11:54:59 florian
Revision 1.114 2003-09-14 19:17:39 peter
* don't use a_call_ref because it can use a parameter register
as temp
Revision 1.113 2003/09/11 11:54:59 florian
* improved arm code generation
* move some protected and private field around
* the temp. register for register parameters/arguments are now released