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|
Bug-Debian: http://bugs.debian.org/733618
Forwarded: not-needed
--- fpc-2.6.2.orig/fpcsrc/compiler/sparc/cgcpu.pas
+++ fpc-2.6.2/fpcsrc/compiler/sparc/cgcpu.pas
@@ -43,6 +43,7 @@ interface
function getfpuregister(list:TAsmList;size:Tcgsize):Tregister;override;
{ sparc special, needed by cg64 }
procedure make_simple_ref(list:TAsmList;var ref: treference);
+ procedure make_simple_ref_sparc(list:TAsmList;var ref: treference;loadaddr : boolean;addrreg : tregister);
procedure handle_load_store(list:TAsmList;isstore:boolean;op: tasmop;reg:tregister;ref: treference);
procedure handle_reg_const_reg(list:TAsmList;op:Tasmop;src:tregister;a:tcgint;dst:tregister);
{ parameter }
@@ -84,6 +85,7 @@ interface
procedure g_overflowCheck_loc(List:TAsmList;const Loc:TLocation;def:TDef;ovloc : tlocation);override;
procedure g_proc_entry(list : TAsmList;localsize : longint;nostackframe:boolean);override;
procedure g_proc_exit(list : TAsmList;parasize:longint;nostackframe:boolean);override;
+ procedure g_maybe_got_init(list: TAsmList); override;
procedure g_restore_registers(list:TAsmList);override;
procedure g_save_registers(list : TAsmList);override;
procedure g_concatcopy(list : TAsmList;const source,dest : treference;len : tcgint);override;
@@ -92,6 +94,7 @@ interface
procedure g_intf_wrapper(list: TAsmList; procdef: tprocdef; const labelname: string; ioffset: longint);override;
private
g1_used : boolean;
+ use_unlimited_pic_mode : boolean;
end;
TCg64Sparc=class(tcg64f32)
@@ -146,11 +149,22 @@ implementation
procedure tcgsparc.make_simple_ref(list:TAsmList;var ref: treference);
+ begin
+ make_simple_ref_sparc(list,ref,false,NR_NO);
+ end;
+
+ procedure tcgsparc.make_simple_ref_sparc(list:TAsmList;var ref: treference;loadaddr : boolean;addrreg : tregister);
var
- tmpreg : tregister;
+ tmpreg,tmpreg2 : tregister;
tmpref : treference;
+ need_add_got,need_got_load : boolean;
begin
- tmpreg:=NR_NO;
+ if loadaddr then
+ tmpreg:=addrreg
+ else
+ tmpreg:=NR_NO;
+ need_add_got:=false;
+ need_got_load:=false;
{ Be sure to have a base register }
if (ref.base=NR_NO) then
begin
@@ -158,14 +172,37 @@ implementation
ref.index:=NR_NO;
end;
if (cs_create_pic in current_settings.moduleswitches) and
- assigned(ref.symbol) then
+ (tf_pic_uses_got in target_info.flags) and
+ use_unlimited_pic_mode and
+ assigned(ref.symbol) then
+ begin
+ if not(pi_needs_got in current_procinfo.flags) then
+ begin
+ //internalerror(200501161);
+ include(current_procinfo.flags,pi_needs_got);
+ end;
+ if current_procinfo.got=NR_NO then
+ current_procinfo.got:=NR_L7;
+ need_got_load:=true;
+ need_add_got:=true;
+ end;
+ if (cs_create_pic in current_settings.moduleswitches) and
+ (tf_pic_uses_got in target_info.flags) and
+ not use_unlimited_pic_mode and
+ assigned(ref.symbol) then
begin
- tmpreg:=GetIntRegister(list,OS_INT);
+ if tmpreg=NR_NO then
+ tmpreg:=GetIntRegister(list,OS_INT);
reference_reset(tmpref,ref.alignment);
tmpref.symbol:=ref.symbol;
tmpref.refaddr:=addr_pic;
if not(pi_needs_got in current_procinfo.flags) then
- internalerror(200501161);
+ begin
+ //internalerror(200501161);
+ include(current_procinfo.flags,pi_needs_got);
+ end;
+ if current_procinfo.got=NR_NO then
+ current_procinfo.got:=NR_L7;
tmpref.index:=current_procinfo.got;
list.concat(taicpu.op_ref_reg(A_LD,tmpref,tmpreg));
ref.symbol:=nil;
@@ -187,14 +224,16 @@ implementation
(ref.offset<simm13lo) or
(ref.offset>simm13hi) then
begin
- tmpreg:=GetIntRegister(list,OS_INT);
+ if tmpreg=NR_NO then
+ tmpreg:=GetIntRegister(list,OS_INT);
reference_reset(tmpref,ref.alignment);
tmpref.symbol:=ref.symbol;
- tmpref.offset:=ref.offset;
+ if not need_got_load then
+ tmpref.offset:=ref.offset;
tmpref.refaddr:=addr_high;
list.concat(taicpu.op_ref_reg(A_SETHI,tmpref,tmpreg));
if (ref.offset=0) and (ref.index=NR_NO) and
- (ref.base=NR_NO) then
+ (ref.base=NR_NO) and not need_add_got then
begin
ref.refaddr:=addr_low;
end
@@ -203,10 +242,36 @@ implementation
{ Load the low part is left }
tmpref.refaddr:=addr_low;
list.concat(taicpu.op_reg_ref_reg(A_OR,tmpreg,tmpref,tmpreg));
- ref.offset:=0;
+ if not need_got_load then
+ ref.offset:=0;
{ symbol is loaded }
ref.symbol:=nil;
end;
+ if need_add_got then
+ begin
+ list.concat(taicpu.op_reg_reg_reg(A_ADD,tmpreg,current_procinfo.got,tmpreg));
+ need_add_got:=false;
+ end;
+ if need_got_load then
+ begin
+ tmpref.refaddr:=addr_no;
+ tmpref.base:=tmpreg;
+ tmpref.symbol:=nil;
+ list.concat(taicpu.op_ref_reg(A_LD,tmpref,tmpreg));
+ need_got_load:=false;
+ if (ref.offset<simm13lo) or
+ (ref.offset>simm13hi) then
+ begin
+ tmpref.symbol:=nil;
+ tmpref.offset:=ref.offset;
+ tmpref.base:=tmpreg;
+ tmpref.refaddr := addr_high;
+ tmpreg2:=GetIntRegister(list,OS_INT);
+ a_load_const_reg(list,OS_INT,ref.offset,tmpreg2);
+ list.concat(taicpu.op_reg_reg_reg(A_ADD,tmpreg,tmpreg2,tmpreg));
+ ref.offset:=0;
+ end;
+ end;
if (ref.index<>NR_NO) then
begin
list.concat(taicpu.op_reg_reg_reg(A_ADD,tmpreg,ref.index,tmpreg));
@@ -220,9 +285,34 @@ implementation
ref.base:=tmpreg;
end;
end;
- if (ref.base<>NR_NO) then
+ if need_add_got then
begin
- if (ref.index<>NR_NO) and
+ if tmpreg=NR_NO then
+ tmpreg:=GetIntRegister(list,OS_INT);
+ list.concat(taicpu.op_reg_reg_reg(A_ADD,ref.base,current_procinfo.got,tmpreg));
+ ref.base:=tmpreg;
+ ref.index:=NR_NO;
+ end;
+ if need_got_load then
+ begin
+ if tmpreg=NR_NO then
+ tmpreg:=GetIntRegister(list,OS_INT);
+ list.concat(taicpu.op_ref_reg(A_LD,ref,tmpreg));
+ ref.base:=tmpreg;
+ ref.index:=NR_NO;
+ end;
+ if (ref.base<>NR_NO) or loadaddr then
+ begin
+ if loadaddr then
+ begin
+ if ref.index<>NR_NO then
+ list.concat(taicpu.op_reg_reg_reg(A_ADD,ref.base,ref.index,tmpreg));
+ ref.base:=tmpreg;
+ ref.index:=NR_NO;
+ if ref.offset<>0 then
+ list.concat(taicpu.op_reg_const_reg(A_ADD,ref.base,ref.offset,tmpreg));
+ end
+ else if (ref.index<>NR_NO) and
((ref.offset<>0) or assigned(ref.symbol)) then
begin
if tmpreg=NR_NO then
@@ -278,7 +368,8 @@ implementation
inherited init_register_allocators;
if (cs_create_pic in current_settings.moduleswitches) and
- (pi_needs_got in current_procinfo.flags) then
+ assigned(current_procinfo) and
+ (pi_needs_got in current_procinfo.flags) then
begin
current_procinfo.got:=NR_L7;
rg[R_INTREGISTER]:=Trgcpu.create(R_INTREGISTER,R_SUBD,
@@ -637,21 +728,47 @@ implementation
procedure TCgSparc.a_loadaddr_ref_reg(list : TAsmList;const ref : TReference;r : tregister);
var
tmpref,href : treference;
- hreg,tmpreg : tregister;
+ hreg,tmpreg,hreg2 : tregister;
+ need_got,need_got_load : boolean;
begin
href:=ref;
+ (* make_simple_ref_sparc(list,href,true,r); *)
+ need_got:=false;
+ need_got_load:=false;
if (href.base=NR_NO) and (href.index<>NR_NO) then
internalerror(200306171);
+ if (cs_create_pic in current_settings.moduleswitches) and
+ (tf_pic_uses_got in target_info.flags) and
+ use_unlimited_pic_mode and
+ assigned(ref.symbol) then
+ begin
+ if not(pi_needs_got in current_procinfo.flags) then
+ begin
+ //internalerror(200501161);
+ include(current_procinfo.flags,pi_needs_got);
+ end;
+ if current_procinfo.got=NR_NO then
+ current_procinfo.got:=NR_L7;
+ need_got_load:=true;
+ need_got:=true;
+ end;
if (cs_create_pic in current_settings.moduleswitches) and
- assigned(href.symbol) then
+ (tf_pic_uses_got in target_info.flags) and
+ not use_unlimited_pic_mode and
+ assigned(href.symbol) then
begin
tmpreg:=GetIntRegister(list,OS_ADDR);
reference_reset(tmpref,href.alignment);
tmpref.symbol:=href.symbol;
tmpref.refaddr:=addr_pic;
if not(pi_needs_got in current_procinfo.flags) then
- internalerror(200501161);
+ begin
+ //internalerror(200501161);
+ include(current_procinfo.flags,pi_needs_got);
+ end;
+ if current_procinfo.got=NR_NO then
+ current_procinfo.got:=NR_L7;
tmpref.base:=current_procinfo.got;
list.concat(taicpu.op_ref_reg(A_LD,tmpref,tmpreg));
href.symbol:=nil;
@@ -677,12 +794,41 @@ implementation
hreg:=GetAddressRegister(list);
reference_reset(tmpref,href.alignment);
tmpref.symbol := href.symbol;
- tmpref.offset := href.offset;
+ if not need_got_load then
+ tmpref.offset := href.offset;
tmpref.refaddr := addr_high;
list.concat(taicpu.op_ref_reg(A_SETHI,tmpref,hreg));
{ Only the low part is left }
tmpref.refaddr:=addr_low;
list.concat(taicpu.op_reg_ref_reg(A_OR,hreg,tmpref,hreg));
+ if need_got then
+ begin
+ list.concat(taicpu.op_reg_reg_reg(A_ADD,hreg,current_procinfo.got,hreg));
+ need_got:=false;
+ end;
+ if need_got_load then
+ begin
+ tmpref.symbol:=nil;
+ tmpref.base:=hreg;
+ tmpref.refaddr:=addr_no;
+ list.concat(taicpu.op_ref_reg(A_LD,tmpref,hreg));
+ need_got_load:=false;
+ if (href.offset<simm13lo) or
+ (href.offset>simm13hi) then
+ begin
+ tmpref.symbol:=nil;
+ tmpref.offset:=href.offset;
+ tmpref.refaddr := addr_high;
+ hreg2:=GetIntRegister(list,OS_INT);
+ a_load_const_reg(list,OS_INT,href.offset,hreg2);
+ { Only the low part is left }
+ list.concat(taicpu.op_reg_reg_reg(A_ADD,hreg,hreg2,hreg));
+ end
+ else if (href.offset<>0) then
+ begin
+ list.concat(taicpu.op_reg_const_reg(A_ADD,hreg,href.offset,hreg));
+ end;
+ end;
if href.base<>NR_NO then
begin
if href.index<>NR_NO then
@@ -728,6 +874,10 @@ implementation
else
{ only offset, can be generated by absolute }
a_load_const_reg(list,OS_ADDR,href.offset,r);
+ if need_got then
+ list.concat(taicpu.op_reg_reg_reg(A_ADD,r,current_procinfo.got,r));
+ if need_got_load then
+ list.concat(taicpu.op_reg_reg(A_LD,r,r));
end;
@@ -1102,10 +1252,28 @@ implementation
end
else
list.concat(Taicpu.Op_reg_const_reg(A_SAVE,NR_STACK_POINTER_REG,-LocalSize,NR_STACK_POINTER_REG));
+ end;
+
+ procedure TCgSparc.g_maybe_got_init(list : TAsmList);
+ var
+ ref : treference;
+ begin
if (cs_create_pic in current_settings.moduleswitches) and
- (pi_needs_got in current_procinfo.flags) then
+ (pi_needs_got in current_procinfo.flags) then
begin
current_procinfo.got:=NR_L7;
+ { Set register $l7 to _GLOBAL_OFFSET_TABLE_ at function entry }
+ { The offsets -8 for %hi and -4 for %lo correspnod to the
+ code distance from the call to FPC_GETGOT inxtruction }
+ reference_reset_symbol(ref,current_asmdata.RefAsmSymbol('_GLOBAL_OFFSET_TABLE_'),-8,sizeof(pint));
+ ref.refaddr:=addr_high;
+ list.concat(taicpu.op_ref_reg(A_SETHI,ref,NR_L7));
+ ref.refaddr:=addr_low;
+ ref.offset:=-4;
+ list.concat(Taicpu.Op_reg_ref_reg(A_OR,NR_L7,ref,NR_L7));
+ list.concat(Taicpu.Op_sym(A_CALL,current_asmdata.RefAsmSymbol('FPC_GETGOT')));
+ { Delay slot }
+ list.concat(Taicpu.Op_none(A_NOP));
end;
end;
@@ -1388,6 +1556,13 @@ implementation
{ jmp *vmtoffs(%eax) ; method offs }
reference_reset_base(href,NR_G1,tobjectdef(procdef.struct).vmtmethodoffset(procdef.extnumber),sizeof(pint));
list.concat(taicpu.op_ref_reg(A_LD,href,NR_G1));
+ { FIXME: this assumes for now that %l7 already has the correct value }
+ if (cs_create_pic in current_settings.moduleswitches) then
+ begin
+ list.concat(taicpu.op_reg_reg_reg(A_ADD,NR_G1,NR_L7,NR_G1));
+ reference_reset_base(href,NR_G1,0,sizeof(pint));
+ list.concat(taicpu.op_ref_reg(A_LD,href,NR_G1));
+ end;
list.concat(taicpu.op_reg(A_JMP,NR_G1));
g1_used:=false;
end
@@ -1399,6 +1574,14 @@ implementation
g1_used:=true;
href.refaddr := addr_low;
list.concat(taicpu.op_reg_ref_reg(A_OR,NR_G1,href,NR_G1));
+ { FIXME: this assumes for now that %l7 already has the correct value }
+ if (cs_create_pic in current_settings.moduleswitches) then
+ begin
+ list.concat(taicpu.op_reg_reg_reg(A_ADD,NR_G1,NR_L7,NR_G1));
+ reference_reset_base(href,NR_G1,0,sizeof(pint));
+ list.concat(taicpu.op_ref_reg(A_LD,href,NR_G1));
+ end;
+
list.concat(taicpu.op_reg(A_JMP,NR_G1));
g1_used:=false;
end;
@@ -1579,6 +1762,10 @@ implementation
procedure create_codegen;
begin
cg:=TCgSparc.Create;
+ if target_info.system=system_sparc_linux then
+ TCgSparc(cg).use_unlimited_pic_mode:=true
+ else
+ TCgSparc(cg).use_unlimited_pic_mode:=false;
cg64:=TCg64Sparc.Create;
end;
|
