paweld/fpc
1
0
Fork 0
mirror of https://gitlab.com/freepascal.org/fpc/source.git synced 2025-04-05 05:58:02 +02:00
Code Issues Packages Projects Releases Wiki Activity

* arm thumb1: several fixes for the internal assembler writer

Browse Source 
git-svn-id: trunk@48675 -
This commit is contained in:
florian 2021-02-14 17:52:26 +00:00
parent 33ce19799b
commit 0316a7697f
6 changed files with 50 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
compiler/arm/agarmgas.pas
View File

@ -371,7 +371,7 @@ unit agarmgas;
Procedure TArmInstrWriter.WriteInstruction(hp : tai);
var op: TAsmOp;
postfix,s: string;
postfix,s,oppostfixstr: string;
i: byte;
sep: string[3];
begin
@ -382,17 +382,24 @@ unit agarmgas;
if cf_wideformat in taicpu(hp).flags then
postfix:='.w';
end;
{ GNU AS does not like an S postfix for several instructions in thumb mode though it is the only
valid encoding of mvn in thumb mode according to the arm docs }
if GenerateThumbCode and (taicpu(hp).oppostfix=PF_S) and
((op=A_MVN) or (op=A_ORR) or (op=A_AND) or (op=A_LSL) or (op=A_ADC) or (op=A_LSR) or (op=A_SBC) or (op=A_EOR) or (op=A_ROR)) then
oppostfixstr:=''
else
oppostfixstr:=oppostfix2str[taicpu(hp).oppostfix];
if unified_syntax then
begin
if taicpu(hp).ops = 0 then
s:=#9+gas_op2str[op]+cond2str[taicpu(hp).condition]+oppostfix2str[taicpu(hp).oppostfix]
s:=#9+gas_op2str[op]+cond2str[taicpu(hp).condition]+oppostfixstr
else if taicpu(hp).oppostfix in [PF_8..PF_U32F64] then
s:=#9+gas_op2str[op]+cond2str[taicpu(hp).condition]+oppostfix2str[taicpu(hp).oppostfix]
s:=#9+gas_op2str[op]+cond2str[taicpu(hp).condition]+oppostfixstr
else
s:=#9+gas_op2str[op]+oppostfix2str[taicpu(hp).oppostfix]+cond2str[taicpu(hp).condition]+postfix; // Conditional infixes are deprecated in unified syntax
s:=#9+gas_op2str[op]+oppostfixstr+cond2str[taicpu(hp).condition]+postfix; // Conditional infixes are deprecated in unified syntax
end
else
s:=#9+gas_op2str[op]+cond2str[taicpu(hp).condition]+oppostfix2str[taicpu(hp).oppostfix];
s:=#9+gas_op2str[op]+cond2str[taicpu(hp).condition]+oppostfixstr;
if taicpu(hp).ops<>0 then
begin
sep:=#9;

8
compiler/arm/armins.dat
View File

@ -215,7 +215,7 @@ reg32 \3\x01\x2F\xFF\x10 ARM32,ARMv4T
reg8,reg8 \300\1\x10\101 ARM32,ARMv4
[CMNcc]
reglo,reglo \x6B\x42\xC0 THUMB,ARMv4T
reglo,reglo \x6F\x42\xC0 THUMB,ARMv4T
reg32,immshifter \x80\xF1\x10\x0F\x00 THUMB32,ARMv6T2
reg32,reg32 \x80\xEB\x10\x0F\x00 THUMB32,WIDE,ARMv6T2
@ -226,10 +226,10 @@ reg32,reg32,shifterop \xE\x1\x60 ARM32,ARMv4
reg32,immshifter \xF\x1\x60 ARM32,ARMv4
[CMPcc]
reglo,reglo \x6B\x42\x80 THUMB,ARMv4T
reglo,reglo \x6F\x42\x80 THUMB,ARMv4T
reg32,reg32 \x61\x45\x0 THUMB,ARMv4T
reglo,immshifter \x6B\x28\x0 THUMB,ARMv4T
reglo,immshifter \x6F\x28\x0 THUMB,ARMv4T
reg32,immshifter \x80\xF1\xB0\x0F\x00 THUMB32,WIDE,ARMv6T2
reg32,reg32 \x80\xEB\xB0\x0F\x00 THUMB32,WIDE,ARMv6T2
@ -612,7 +612,7 @@ reg32,reg32,shifterop \xE\x1\x20 ARM32,ARMv4
reg32,immshifter \xF\x3\x20 ARM32,ARMv4
[TSTcc]
reglo,reglo \x6B\x42\x00 THUMB,ARMv4T
reglo,reglo \x6F\x42\x00 THUMB,ARMv4T
reg32,immshifter \x80\xF0\x10\x0F\x00 THUMB32,ARMv6T2
reg32,reg32 \x80\xEA\x10\x0F\x00 THUMB32,WIDE,ARMv6T2

8
compiler/arm/armtab.inc
View File

@ -592,7 +592,7 @@
opcode : A_CMN;
ops : 2;
optypes : (ot_reglo,ot_reglo,ot_none,ot_none,ot_none,ot_none);
code : #107#66#192;
code : #111#66#192;
flags : if_thumb or if_armv4t
),
(
@ -641,7 +641,7 @@
opcode : A_CMP;
ops : 2;
optypes : (ot_reglo,ot_reglo,ot_none,ot_none,ot_none,ot_none);
code : #107#66#128;
code : #111#66#128;
flags : if_thumb or if_armv4t
),
(
@ -655,7 +655,7 @@
opcode : A_CMP;
ops : 2;
optypes : (ot_reglo,ot_immediateshifter,ot_none,ot_none,ot_none,ot_none);
code : #107#40#0;
code : #111#40#0;
flags : if_thumb or if_armv4t
),
(
@ -2328,7 +2328,7 @@
opcode : A_TST;
ops : 2;
optypes : (ot_reglo,ot_reglo,ot_none,ot_none,ot_none,ot_none);
code : #107#66#0;
code : #111#66#0;
flags : if_thumb or if_armv4t
),
(

46
compiler/arm/cgcpu.pas
View File

@ -746,9 +746,9 @@ unit cgcpu;
(A_NONE,A_MOV,A_ADD,A_AND,A_NONE,A_NONE,A_MUL,A_MUL,A_NONE,A_NONE,A_ORR,
A_ASR,A_LSL,A_LSR,A_SUB,A_EOR,A_NONE,A_ROR);
op_reg_postfix: array[TOpCG] of TOpPostfix =
(PF_None,PF_None,PF_None,PF_None,PF_None,PF_None,PF_None,PF_None,PF_None,PF_None,PF_None,
PF_None,PF_None,PF_None,PF_None,PF_None,PF_None,PF_None);
op_reg_postfix_thumb: array[TOpCG] of TOpPostfix =
(PF_None,PF_None,PF_None,PF_S,PF_None,PF_None,PF_None,PF_None,PF_None,PF_None,PF_S,
PF_None,PF_S,PF_S,PF_None,PF_S,PF_None,PF_S);
procedure tcgarm.a_op_const_reg_reg(list: TAsmList; op: TOpCg;
size: tcgsize; a: tcgint; src, dst: tregister);
@ -3925,7 +3925,7 @@ unit cgcpu;
a_internal_load_ref_reg(list,OS_S8,OS_S8,usedtmpref,tmpreg);
list.concat(taicpu.op_reg_const(A_LSL,tmpreg,8));
list.concat(taicpu.op_reg_reg(A_ORR,reg,tmpreg));
list.concat(setoppostfix(taicpu.op_reg_reg(A_ORR,reg,tmpreg),PF_S));
end;
OS_32,OS_S32:
begin
@ -3955,7 +3955,7 @@ unit cgcpu;
inc(usedtmpref.offset,dir*2);
a_internal_load_ref_reg(list,OS_16,OS_16,usedtmpref,tmpreg);
list.concat(taicpu.op_reg_const(A_LSL,tmpreg,16));
list.concat(taicpu.op_reg_reg(A_ORR,reg,tmpreg));
list.concat(setoppostfix(taicpu.op_reg_reg(A_ORR,reg,tmpreg),PF_S));
end
else
begin
@ -3965,15 +3965,15 @@ unit cgcpu;
inc(usedtmpref.offset,dir);
a_internal_load_ref_reg(list,OS_8,OS_8,usedtmpref,tmpreg);
list.concat(taicpu.op_reg_const(A_LSL,tmpreg,8));
list.concat(taicpu.op_reg_reg(A_ORR,reg,tmpreg));
list.concat(setoppostfix(taicpu.op_reg_reg(A_ORR,reg,tmpreg),PF_S));
inc(usedtmpref.offset,dir);
a_internal_load_ref_reg(list,OS_8,OS_8,usedtmpref,tmpreg);
list.concat(taicpu.op_reg_const(A_LSL,tmpreg,16));
list.concat(taicpu.op_reg_reg(A_ORR,reg,tmpreg));
list.concat(setoppostfix(taicpu.op_reg_reg(A_ORR,reg,tmpreg),PF_S));
inc(usedtmpref.offset,dir);
a_internal_load_ref_reg(list,OS_8,OS_8,usedtmpref,tmpreg);
list.concat(taicpu.op_reg_const(A_LSL,tmpreg,24));
list.concat(taicpu.op_reg_reg(A_ORR,reg,tmpreg));
list.concat(setoppostfix(taicpu.op_reg_reg(A_ORR,reg,tmpreg),PF_S));
end;
end
else
@ -3996,7 +3996,7 @@ unit cgcpu;
if not(size in [OS_8,OS_S8,OS_16,OS_S16,OS_32,OS_S32]) then
internalerror(2002090908);
if is_thumb_imm(a) then
list.concat(taicpu.op_reg_const(A_MOV,reg,a))
list.concat(setoppostfix(taicpu.op_reg_const(A_MOV,reg,a),PF_S))
else
begin
reference_reset(hr,4,[]);
@ -4157,7 +4157,7 @@ unit cgcpu;
OP_NEG:
list.concat(taicpu.op_reg_reg(A_NEG,dst,src));
OP_NOT:
list.concat(taicpu.op_reg_reg(A_MVN,dst,src));
list.concat(setoppostfix(taicpu.op_reg_reg(A_MVN,dst,src),PF_S));
OP_DIV,OP_IDIV:
internalerror(200308284);
OP_ROL:
@ -4168,13 +4168,13 @@ unit cgcpu;
tmpreg:=getintregister(list,OS_32);
a_load_const_reg(list,OS_32,32,tmpreg);
list.concat(taicpu.op_reg_reg(A_SUB,tmpreg,src));
list.concat(taicpu.op_reg_reg(A_ROR,dst,src));
list.concat(setoppostfix(taicpu.op_reg_reg(A_ROR,dst,src),PF_S));
end;
else
begin
a_reg_alloc(list,NR_DEFAULTFLAGS);
list.concat(setoppostfix(
taicpu.op_reg_reg(op_reg_opcg2asmop[op],dst,src),op_reg_postfix[op]));
taicpu.op_reg_reg(op_reg_opcg2asmop[op],dst,src),op_reg_postfix_thumb[op]));
end;
end;
maybeadjustresult(list,op,size,dst);
@ -4210,7 +4210,7 @@ unit cgcpu;
// if cgsetflags or setflags then
a_reg_alloc(list,NR_DEFAULTFLAGS);
list.concat(setoppostfix(
taicpu.op_reg_const(op_reg_opcg2asmop[op],dst,a),op_reg_postfix[op]));
taicpu.op_reg_const(op_reg_opcg2asmop[op],dst,a),op_reg_postfix_thumb[op]));
if (cgsetflags {!!! or setflags }) and (size in [OS_8,OS_16,OS_32]) then
begin
@ -4269,7 +4269,7 @@ unit cgcpu;
{ x := y and 0; just clears a register, this sometimes gets generated on 64bit ops.
Just using mov x, #0 might allow some easier optimizations down the line. }
else if (op = OP_AND) and (dword(a)=0) then
list.concat(taicpu.op_reg_const(A_MOV,dst,0))
list.concat(setoppostfix(taicpu.op_reg_const(A_MOV,dst,0),PF_S))
{ x := y AND $FFFFFFFF just copies the register, so use mov for better optimizations }
else if (op = OP_AND) and (not(dword(a))=0) then
// do nothing
@ -4325,10 +4325,10 @@ unit cgcpu;
ai:=setcondition(taicpu.op_sym(A_B,l1),flags_to_cond(f));
ai.is_jmp:=true;
list.concat(ai);
list.concat(taicpu.op_reg_const(A_MOV,reg,0));
list.concat(setoppostfix(taicpu.op_reg_const(A_MOV,reg,0),PF_S));
list.concat(taicpu.op_sym(A_B,l2));
cg.a_label(list,l1);
list.concat(taicpu.op_reg_const(A_MOV,reg,1));
list.concat(setoppostfix(taicpu.op_reg_const(A_MOV,reg,1),PF_S));
a_reg_dealloc(list,NR_DEFAULTFLAGS);
cg.a_label(list,l2);
end;
@ -5355,11 +5355,11 @@ unit cgcpu;
case op of
OP_NEG:
begin
list.concat(taicpu.op_reg_const(A_MOV,regdst.reglo,0));
list.concat(taicpu.op_reg_const(A_MOV,regdst.reghi,0));
list.concat(setoppostfix(taicpu.op_reg_const(A_MOV,regdst.reglo,0),PF_S));
list.concat(setoppostfix(taicpu.op_reg_const(A_MOV,regdst.reghi,0),PF_S));
cg.a_reg_alloc(list,NR_DEFAULTFLAGS);
list.concat(taicpu.op_reg_reg(A_SUB,regdst.reglo,regsrc.reglo));
list.concat(taicpu.op_reg_reg(A_SBC,regdst.reghi,regsrc.reghi));
list.concat(setoppostfix(taicpu.op_reg_reg(A_SBC,regdst.reghi,regsrc.reghi),PF_S));
cg.a_reg_dealloc(list,NR_DEFAULTFLAGS);
end;
OP_NOT:
@ -5376,13 +5376,13 @@ unit cgcpu;
begin
cg.a_reg_alloc(list,NR_DEFAULTFLAGS);
list.concat(taicpu.op_reg_reg(A_ADD,regdst.reglo,regsrc.reglo));
list.concat(taicpu.op_reg_reg(A_ADC,regdst.reghi,regsrc.reghi));
list.concat(setoppostfix(taicpu.op_reg_reg(A_ADC,regdst.reghi,regsrc.reghi),PF_S));
end;
OP_SUB:
begin
cg.a_reg_alloc(list,NR_DEFAULTFLAGS);
list.concat(taicpu.op_reg_reg(A_SUB,regdst.reglo,regsrc.reglo));
list.concat(taicpu.op_reg_reg(A_SBC,regdst.reghi,regsrc.reghi));
list.concat(setoppostfix(taicpu.op_reg_reg(A_SBC,regdst.reghi,regsrc.reghi),PF_S));
end;
else
internalerror(2003083105);
@ -5417,7 +5417,7 @@ unit cgcpu;
tmpreg:=cg.getintregister(list,OS_32);
cg.a_load_const_reg(list,OS_32,aint(hi(value)),tmpreg);
list.concat(taicpu.op_reg_reg(A_ADC,reg.reghi,tmpreg));
list.concat(setoppostfix(taicpu.op_reg_reg(A_ADC,reg.reghi,tmpreg),PF_S));
end;
OP_SUB:
begin
@ -5436,7 +5436,7 @@ unit cgcpu;
tmpreg:=cg.getintregister(list,OS_32);
cg.a_load_const_reg(list,OS_32,hi(value),tmpreg);
list.concat(taicpu.op_reg_reg(A_SBC,reg.reghi,tmpreg));
list.concat(setoppostfix(taicpu.op_reg_reg(A_SBC,reg.reghi,tmpreg),PF_S));
end;
else
internalerror(2003083106);

4
compiler/arm/narmset.pas
View File

@ -112,11 +112,11 @@ implementation
right.resultdef, right.resultdef, true);
hregister:=hlcg.getintregister(current_asmdata.CurrAsmList, opdef);
current_asmdata.CurrAsmList.concat(taicpu.op_reg_const(A_MOV,hregister,1));
hlcg.a_load_const_reg(current_asmdata.CurrAsmList,opdef,1,hregister);
if GenerateThumbCode or GenerateThumb2Code then
begin
current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg(A_LSL,hregister,left.location.register));
hlcg.a_op_reg_reg(current_asmdata.CurrAsmList,OP_SHL,opdef,left.location.register,hregister);
cg.a_reg_alloc(current_asmdata.CurrAsmList,NR_DEFAULTFLAGS);
current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg(A_TST,right.location.register,hregister));
end

5
compiler/arm/raarm.pas
View File

@ -43,6 +43,8 @@ unit raarm;
implementation
uses
globals,
cpuinfo,
aasmcpu;
function TARMInstruction.ConcatInstruction(p:TAsmList) : tai;
@ -53,6 +55,9 @@ unit raarm;
include((result as taicpu).flags,cf_wideformat)
else
exclude((result as taicpu).flags,cf_wideformat);
{ GNU As assumes implicit S postfix for some instructions in thumb mode }
if (current_settings.instructionset=is_thumb) and (((result as taicpu).oppostfix=PF_None) and ((opcode=A_MOV) and ((result as taicpu).oper[1]^.typ=top_const)) or (opcode=A_MVN)) then
(result as taicpu).oppostfix:=PF_S
end;