paweld/fpc
1
0
Fork 0
mirror of https://gitlab.com/freepascal.org/fpc/source.git synced 2025-08-13 10:59:18 +02:00
Code Issues Packages Projects Releases Wiki Activity

m68k/cgcpu.pas, tcg68k.g_concatcopy:

Browse Source 
* in case of copying from the parameter location to the local location we need to use the alignment size for the source as byte/word values are passed as LongInts (this is how the ABI is specified)

git-svn-id: trunk@22924 -
This commit is contained in:
svenbarth 2012-11-04 16:11:16 +00:00
parent 30f006d751
commit 22552e468b
1 changed files with 20 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
compiler/m68k/cgcpu.pas
View File

@ -1490,7 +1490,8 @@ unit cgcpu;
hl2: tasmlabel; hl2: tasmlabel;
popaddress : boolean; popaddress : boolean;
srcref,dstref : treference; srcref,dstref : treference;
alignsize : tcgsize;
orglen : tcgint;
begin begin
popaddress := false; popaddress := false;
@ -1504,6 +1505,8 @@ unit cgcpu;
// if delsource then // if delsource then
// reference_release(list,source); // reference_release(list,source);
orglen:=len;
{ from 12 bytes movs is being used } { from 12 bytes movs is being used }
if {(not loadref) and} ((len<=8) or (not(cs_opt_size in current_settings.optimizerswitches) and (len<=12))) then if {(not loadref) and} ((len<=8) or (not(cs_opt_size in current_settings.optimizerswitches) and (len<=12))) then
begin begin
@ -1522,7 +1525,14 @@ unit cgcpu;
{ move a word } { move a word }
if len>1 then if len>1 then
begin begin
a_load_ref_reg(list,OS_16,OS_16,srcref,hregister); if (orglen<source.alignment) and
(source.base=NR_FRAME_POINTER_REG) and
(source.offset>0) then
{ copy of param to local location }
alignsize:=int_cgsize(source.alignment)
else
alignsize:=OS_16;
a_load_ref_reg(list,alignsize,OS_16,srcref,hregister);
a_load_reg_ref(list,OS_16,OS_16,hregister,dstref); a_load_reg_ref(list,OS_16,OS_16,hregister,dstref);
inc(srcref.offset,2); inc(srcref.offset,2);
inc(dstref.offset,2); inc(dstref.offset,2);
@ -1531,7 +1541,14 @@ unit cgcpu;
{ move a single byte } { move a single byte }
if len>0 then if len>0 then
begin begin
a_load_ref_reg(list,OS_8,OS_8,srcref,hregister); if (orglen<source.alignment) and
(source.base=NR_FRAME_POINTER_REG) and
(source.offset>0) then
{ copy of param to local location }
alignsize:=int_cgsize(source.alignment)
else
alignsize:=OS_8;
a_load_ref_reg(list,alignsize,OS_8,srcref,hregister);
a_load_reg_ref(list,OS_8,OS_8,hregister,dstref); a_load_reg_ref(list,OS_8,OS_8,hregister,dstref);
end end
end end