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+ stack touching for win64

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git-svn-id: trunk@3252 -
This commit is contained in:
florian 2006-04-17 19:00:53 +00:00
parent 5a888656ca
commit af4d5c898a
1 changed files with 38 additions and 2 deletions
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40
compiler/x86/cgx86.pas
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@ -1732,14 +1732,14 @@ unit cgx86;
procedure tcgx86.g_stackpointer_alloc(list : TAsmList;localsize : longint);
{$ifdef i386}
{$ifdef x86}
{$ifndef NOTARGETWIN}
var
href : treference;
i : integer;
again : tasmlabel;
{$endif NOTARGETWIN}
{$endif i386}
{$endif x86}
begin
if localsize>0 then
begin
@ -1780,6 +1780,42 @@ unit cgx86;
else
{$endif NOTARGETWIN}
{$endif i386}
{$ifdef x86_64}
{$ifndef NOTARGETWIN}
{ windows guards only a few pages for stack growing, }
{ so we have to access every page first }
if (target_info.system=system_x86_64_win64) and
(localsize>=winstackpagesize) then
begin
if localsize div winstackpagesize<=5 then
begin
list.concat(Taicpu.Op_const_reg(A_SUB,S_Q,localsize,NR_RSP));
for i:=1 to localsize div winstackpagesize do
begin
reference_reset_base(href,NR_RSP,localsize-i*winstackpagesize+4);
list.concat(Taicpu.op_reg_ref(A_MOV,S_L,NR_EAX,href));
end;
reference_reset_base(href,NR_RSP,0);
list.concat(Taicpu.op_reg_ref(A_MOV,S_L,NR_EAX,href));
end
else
begin
current_asmdata.getjumplabel(again);
getcpuregister(list,NR_R10);
list.concat(Taicpu.op_const_reg(A_MOV,S_Q,localsize div winstackpagesize,NR_R10));
a_label(list,again);
list.concat(Taicpu.op_const_reg(A_SUB,S_Q,winstackpagesize,NR_RSP));
reference_reset_base(href,NR_RSP,0);
list.concat(Taicpu.op_reg_ref(A_MOV,S_L,NR_EAX,href));
list.concat(Taicpu.op_reg(A_DEC,S_Q,NR_R10));
a_jmp_cond(list,OC_NE,again);
list.concat(Taicpu.op_const_reg(A_SUB,S_Q,localsize mod winstackpagesize-4,NR_RSP));
ungetcpuregister(list,NR_R10);
end
end
else
{$endif NOTARGETWIN}
{$endif x86_64}
list.concat(Taicpu.Op_const_reg(A_SUB,tcgsize2opsize[OS_ADDR],localsize,NR_STACK_POINTER_REG));
end;
end;