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{ %CPU=i386 }
{$R-}
program test_register_pushing;
var
before, after : longint;
wpush,lpush : longint;
const
haserror : boolean = false;
begin
{$ifdef CPUI386}
{$asmmode att}
asm
{$ifndef FPC_PIC}
movl %esp,before
pushw %es
movl %esp,after
popw %es
{$else not FPC_PIC}
call .LPIC
.LPIC:
popl %ecx
{$ifdef darwin}
movl %esp,before-.LPIC(%ecx)
pushw %es
movl %esp,after-.LPIC(%ecx)
popw %es
{$else darwin}
addl $_GLOBAL_OFFSET_TABLE_,%ecx
movl %esp,before@GOT(%ecx)
pushw %es
movl %esp,after@GOT(%ecx)
popw %es
{$endif darwin}
{$endif not FPC_PIC}
end;
wpush:=before-after;
if wpush<>2 then
begin
Writeln('Compiler does not push "pushw %es" into 2 bytes');
haserror:=true;
end;
asm
{$ifndef FPC_PIC}
movl %esp,before
pushl %es
movl %esp,after
popl %es
{$else not FPC_PIC}
call .LPIC
.LPIC:
popl %ecx
{$ifdef darwin}
movl %esp,before-.LPIC(%ecx)
pushl %es
movl %esp,after-.LPIC(%ecx)
popl %es
{$else darwin}
addl $_GLOBAL_OFFSET_TABLE_,%ecx
movl %esp,before@GOT(%ecx)
pushl %es
movl %esp,after@GOT(%ecx)
popl %es
{$endif darwin}
{$endif not FPC_PIC}
end;
lpush:=before-after;
if lpush<>4 then
begin
Writeln('Compiler does not push "pushl %es" into 4 bytes');
haserror:=true;
end;
asm
{$ifndef FPC_PIC}
movl %esp,before
pushw %gs
movl %esp,after
popw %gs
{$else not FPC_PIC}
call .LPIC
.LPIC:
popl %ecx
{$ifdef darwin}
movl %esp,before-.LPIC(%ecx)
pushw %gs
movl %esp,after-.LPIC(%ecx)
popw %gs
{$else darwin}
addl $_GLOBAL_OFFSET_TABLE_,%ecx
movl %esp,before@GOT(%ecx)
pushw %gs
movl %esp,after@GOT(%ecx)
popw %gs
{$endif darwin}
{$endif not FPC_PIC}
end;
wpush:=before-after;
if wpush<>2 then
begin
Writeln('Compiler does not push "pushw %gs" into 2 bytes');
haserror:=true;
end;
asm
{$ifndef FPC_PIC}
movl %esp,before
pushl %gs
movl %esp,after
popl %gs
{$else not FPC_PIC}
call .LPIC
.LPIC:
popl %ecx
{$ifdef darwin}
movl %esp,before-.LPIC(%ecx)
pushl %gs
movl %esp,after-.LPIC(%ecx)
popl %gs
{$else darwin}
addl $_GLOBAL_OFFSET_TABLE_,%ecx
movl %esp,before@GOT(%ecx)
pushl %gs
movl %esp,after@GOT(%ecx)
popl %gs
{$endif darwin}
{$endif not FPC_PIC}
end;
lpush:=before-after;
if lpush<>4 then
begin
Writeln('Compiler does not push "pushl %gs" into 4 bytes');
haserror:=true;
end;
{$asmmode intel}
asm
{$ifndef FPC_PIC}
mov before,esp
push es
mov after,esp
pop es
{$else not FPC_PIC}
call @@LPIC
@@LPIC:
pop ecx
{$ifdef darwin}
mov [before-@@LPIC+ecx],esp
push es
mov [after-@@LPIC+ecx],esp
pop es
{$else darwin}
add ecx,@_GLOBAL_OFFSET_TABLE_
mov [ecx].OFFSET before,esp
push es
mov [ecx].OFFSET after,esp
pop es
{$endif darwin}
{$endif not FPC_PIC}
end;
Writeln('Intel "push es" uses ',before-after,' bytes');
{$endif CPUI386}
if haserror then
Halt(1);
end.
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