I am using the FPC compiler to compile embedded ARM7 code (LPC21xx / LPC23xx).
For this purpose, I use the 2.05 compiler, and it is working without problems
at all.
However, because we are using the 2.62 compiler on other platforms, I have
compiled a new
system unit for the ARM7 platform with the 2.62 compiler. I then ran into this
problem.
The old compiler uses fpc_chararray_to_shortstr to comvert from an array of
char to a
shortstring. That works OK.
The 2.62 compiler wants to use fpc_chararray_to_ansistr to the same job, and
that is a
problem because my ARM7 system unit do not support ansistrings (and should not).
The {$LONGSTRINGS OFF} directive is given at the beginning of the program, and
that
eliminates any problems with long strings using the 2.05 compiler. That does
not seem to
work with the new compiler.
Is there a way around this problem?
Carsten
FPC 2.05
# [38] Val(pChar16(LineDataOfset)^,NameDataOfset,p);
sub r5,r11,#568
ldr r0,.L57
ldr r4,[r0]
mov r3,#1
mov r2,#15
mov r1,r4
sub r0,r11,#824
bl fpc_chararray_to_shortstr
sub r1,r11,#824
mov r0,#4
mov r2,r5
bl fpc_val_sint_shortstr
ldr r1,.L68
str r0,[r1]
ldr r0,.L71
sub r3,r11,#568
mov r2,#2
.L72:
ldrbr1,[r3], #1
subsr2,r2,#1
strbr1,[r0], #1
bne .L72
FPC 2.62
# [38] Val(pChar16(LineDataOfset)^,NameDataOfset,p);
sub r0,r11,#628
bl FPC_ANSISTR_DECR_REF
mov r0,#0
str r0,[r11, #-628]
ldr r0,.Lj13
ldr r1,[r0]
sub r0,r11,#628
mov r3,#1
mov r2,#15
bl fpc_chararray_to_ansistr
ldr r1,[r11, #-628]
sub r2,r11,#116
mov r0,#4
bl fpc_val_sint_ansistr
ldr r1,.Lj70
str r0,[r1]
ldrbr0,[r11, #-116]
ldr r1,.Lj73
strbr0,[r1]
ldrbr0,[r11, #-115]
strbr0,[r1, #1]
.stabn 68,0,39,_$LINEINFO$_Ll9 -
unit lineinfo;
{$LONGSTRINGS OFF}
{$Assertions off}
{$RANGECHECKS OFF}
{$OVERFLOWCHECKS OFF}
{$S- STACK CHECKING OFF}
interface
procedure GetLineInfo(addr:pointer; var
FuncStringListPointer,SrcStringListPointer:pChar;
var line:longWord);
implementation
uses
LineInfoTyp;
var
data_beg_src:byte; external name '__data_beg_src__';
data_beg:byte; external name '__data_beg__';
data_end:byte; external name '__data_end__';
LineDataOfset,EndLineDataOfset,NameDataOfset:Longint; {Skal være
longint}
p:integer;
Type
Char16=array[0..15] of char;
pChar16=^Char16;
pArm7LineInfo=^Arm7LineInfo_typ;
procedure GetLineInfo(addr:pointer; var
FuncStringListPointer,SrcStringListPointer:pChar;
var line:longWord);
Begin
LineDataOfset:=(Longint(@data_end)-Longint(@data_beg))+Longint(@data_beg_src);
if (byte(LineDataOfset) and $0F)0 then
LineDataOfset:=(LineDataOfset and $FFF0) +$10;
if pChar16(LineDataOfset)^ = cLineDataOfsetString then
begin
LineDataOfset:=LineDataOfset+16;
Val(pChar16(LineDataOfset)^,NameDataOfset,p);
if p=0 then
begin
LineDataOfset:=LineDataOfset+16;
NameDataOfset:=NameDataOfset+LineDataOfset;
EndLineDataOfset:=NameDataOfset;
if pChar16(NameDataOfset)^ = cNameDataOfsetString then
begin
NameDataOfset:=NameDataOfset+32;
while LineDataOfsetEndLineDataOfset do
begin
if pArm7LineInfo(LineDataOfset)^.addrlongword(addr) then
begin
LineDataOfset:=LineDataOfset-16;
line:=pArm7LineInfo(LineDataOfset)^.line;
longint(FuncStringListPointer):=longint(pArm7LineInfo(LineDataOfset)^.FuncStringListPointer
)+NameDataOfset;
longint(SrcStringListPointer):=longint(pArm7LineInfo(LineDataOfset)^.SrcStringListPointer)+
NameDataOfset;
exit;
end;
LineDataOfset:=LineDataOfset+16;
end;
end else runerror(48);{Error finding Str. Ofset}
end else runerror(49); {Error in val of str. Of.}
end else runerror(50);{Error finding Data Ofset}
End;
end.
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