devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

Coldfire targets: tiny optimisation.

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25098 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2010-03-09 23:44:25 +00:00
parent 1dfa0e92dc
commit 3710ae92cc
1 changed files with 6 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

13
apps/plugins/doom/r_draw.c
View file

@ -534,12 +534,10 @@ void R_DrawSpan (void)
"clr.l %%d4 \n" "clr.l %%d4 \n"
"spanloop: \n" "spanloop: \n"
"move.l %[xfrac], %%d1 \n" "move.l %[xfrac], %%d1 \n"
"move.l %[yfrac], %%d2 \n" "swap %%d1 \n"
"lsr.l #8,%%d1 \n"
"lsr.l #8,%%d2 \n"
"lsr.l #8,%%d1 \n"
"lsr.l #2,%%d2 \n"
"and.l #63,%%d1 \n" "and.l #63,%%d1 \n"
"move.l %[yfrac], %%d2 \n"
"lsr.l %[ten],%%d2 \n"
"and.l #4032,%%d2 \n" "and.l #4032,%%d2 \n"
"or.l %%d2, %%d1 \n" "or.l %%d2, %%d1 \n"
"move.b (%[source], %%d1), %%d4 \n" "move.b (%[source], %%d1), %%d4 \n"
@ -551,9 +549,10 @@ void R_DrawSpan (void)
"endspanloop: \n" "endspanloop: \n"
: /* outputs */ : /* outputs */
: /* inputs */ : /* inputs */
[ten] "d"(10),
[count] "d" (ds_x2-ds_x1+1), [count] "d" (ds_x2-ds_x1+1),
[xfrac] "d" (ds_xfrac), [xfrac] "a" (ds_xfrac),
[yfrac] "d" (ds_yfrac), [yfrac] "a" (ds_yfrac),
[source] "a" (ds_source), [source] "a" (ds_source),
[colormap] "a" (ds_colormap), [colormap] "a" (ds_colormap),
[dest] "a" (topleft+ds_y*SCREENWIDTH +ds_x1), [dest] "a" (topleft+ds_y*SCREENWIDTH +ds_x1),