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fix formatting

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This commit is contained in:
Markus Fröschle
2016-11-18 05:38:47 +00:00
parent 8a65fe2e89
commit 24a7fab3ee
1 changed files with 65 additions and 45 deletions
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96
video/offscreen.c
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@@ -70,7 +70,9 @@ static void xmfreblk(void *m)
static MD *ffit(long amount, MPB *mp) static MD *ffit(long amount, MPB *mp)
{ {
MD *p,*q,*p1; /* free list is composed of MD's */ MD *p;
MD *q;
MD *p1; /* free list is composed of MD's */
int maxflg; int maxflg;
long maxval; long maxval;
if(amount != -1) if(amount != -1)
@@ -84,96 +86,113 @@ static MD *ffit(long amount, MPB *mp)
amount &= 0xFFFFFFF0; amount &= 0xFFFFFFF0;
#endif #endif
} }
if((q = mp->mp_rover) == 0) /* get rotating pointer */ if ((q = mp->mp_rover) == 0) /* get rotating pointer */
return(0) ; return(0) ;
maxval = 0; maxval = 0;
maxflg = ((amount == -1) ? true : false) ; maxflg = ((amount == -1) ? true : false) ;
p = q->m_link; /* start with next MD */ p = q->m_link; /* start with next MD */
do /* search the list for an MD with enough space */ do /* search the list for an MD with enough space */
{ {
if(p == NULL) if (p == NULL)
{ {
/* at end of list, wrap back to start */ /* at end of list, wrap back to start */
q = (MD *) &mp->mp_mfl; /* q => mfl field */ q = (MD *) &mp->mp_mfl; /* q => mfl field */
p = q->m_link; /* p => 1st MD */ p = q->m_link; /* p => 1st MD */
} }
if((!maxflg) && (p->m_length >= amount)) if ((!maxflg) && (p->m_length >= amount))
{ {
/* big enough */ /* big enough */
if(p->m_length == amount) if (p->m_length == amount)
q->m_link = p->m_link; /* take the whole thing */ q->m_link = p->m_link; /* take the whole thing */
else else
{ {
/* break it up - 1st allocate a new /*
MD to describe the remainder */ * break it up - 1st allocate a new
* MD to describe the remainder
*/
p1 = xmgetblk(); p1 = xmgetblk();
if(p1 == NULL) if (p1 == NULL)
return(NULL); return NULL;
/* init new MD */
/*
* init new MD
*/
p1->m_length = p->m_length - amount; p1->m_length = p->m_length - amount;
p1->m_start = p->m_start + amount; p1->m_start = p->m_start + amount;
p1->m_link = p->m_link; p1->m_link = p->m_link;
p->m_length = amount; /* adjust allocated block */ p->m_length = amount; /* adjust allocated block */
q->m_link = p1; q->m_link = p1;
} }
/* link allocate block into allocated list,
mark owner of block, & adjust rover */ /*
* link allocated block into allocated list,
* mark owner of block, & adjust rover
*/
p->m_link = mp->mp_mal; p->m_link = mp->mp_mal;
mp->mp_mal = p; mp->mp_mal = p;
mp->mp_rover = (q == (MD *) &mp->mp_mfl ? q->m_link : q); mp->mp_rover = (q == (MD *) &mp->mp_mfl ? q->m_link : q);
return(p); /* got some */ return p; /* got some */
} }
else if(p->m_length > maxval) else if (p->m_length > maxval)
maxval = p->m_length; maxval = p->m_length;
p = ( q=p )->m_link; p = (q = p)->m_link;
} }
while(q != mp->mp_rover);
/* return either the max, or 0 (error) */ while (q != mp->mp_rover);
if(maxflg)
/*
* return either the max, or 0 (error)
*/
if (maxflg)
{ {
maxval -= 15; /* 16 bytes alignment */ maxval -= 15; /* 16 bytes alignment */
if(maxval < 0) if (maxval < 0)
maxval = 0; maxval = 0;
else else
maxval &= 0xFFFFFFF0; maxval &= 0xFFFFFFF0;
} }
return(maxflg ? (MD *) maxval : 0); return maxflg ? (MD *) maxval : 0;
} }
static void freeit(MD *m, MPB *mp) static void freeit(MD *m, MPB *mp)
{ {
MD *p, *q; MD *p;
q = NULL; MD *q = NULL;
for (p = mp->mp_mfl; p ; p = (q=p) -> m_link)
for (p = mp->mp_mfl; p; p = (q = p) -> m_link)
{ {
if(m->m_start <= p->m_start) if (m->m_start <= p->m_start)
break; break;
} }
m->m_link = p; m->m_link = p;
if(q) if (q)
q->m_link = m; q->m_link = m;
else else
mp->mp_mfl = m; mp->mp_mfl = m;
if(!mp->mp_rover) if (!mp->mp_rover)
mp->mp_rover = m; mp->mp_rover = m;
if(p) if (p)
{ {
if(m->m_start + m->m_length == p->m_start) if (m->m_start + m->m_length == p->m_start)
{ /* join to higher neighbor */ {
/*
* join to higher neighbor
*/
m->m_length += p->m_length; m->m_length += p->m_length;
m->m_link = p->m_link; m->m_link = p->m_link;
if(p == mp->mp_rover) if (p == mp->mp_rover)
mp->mp_rover = m; mp->mp_rover = m;
xmfreblk(p); xmfreblk(p);
} }
} }
if(q) if (q)
{ {
if(q->m_start + q->m_length == m->m_start) if (q->m_start + q->m_length == m->m_start)
{ /* join to lower neighbor */ {
/* join to lower neighbor */
q->m_length += m->m_length; q->m_length += m->m_length;
q->m_link = m->m_link; q->m_link = m->m_link;
if(m == mp->mp_rover) if (m == mp->mp_rover)
mp->mp_rover = q; mp->mp_rover = q;
xmfreblk(m); xmfreblk(m);
} }
@@ -182,7 +201,8 @@ static void freeit(MD *m, MPB *mp)
long offscreen_free(struct fb_info *info, long addr) long offscreen_free(struct fb_info *info, long addr)
{ {
MD *p,**q; MD *p;
MD **q;
MPB *mpb; MPB *mpb;
dbg("%p\r\n", addr); dbg("%p\r\n", addr);
@@ -202,7 +222,7 @@ long offscreen_free(struct fb_info *info, long addr)
*q = p->m_link; *q = p->m_link;
freeit(p,mpb); freeit(p,mpb);
//*vblsem = 1; //*vblsem = 1;
return(0); return 0;
} }
long offscreen_alloc(struct fb_info *info, long amount) long offscreen_alloc(struct fb_info *info, long amount)
@@ -237,7 +257,7 @@ long offscreen_alloc(struct fb_info *info, long amount)
long offscren_reserved(struct fb_info *info) long offscren_reserved(struct fb_info *info)
{ {
return((long) info->ram_base + (long) info->ram_size); return (long) info->ram_base + (long) info->ram_size;
} }
void offscreen_init(struct fb_info *info) void offscreen_init(struct fb_info *info)
@@ -264,6 +284,6 @@ void offscreen_init(struct fb_info *info)
dbg("offscreen_init start %p, length %ld, ram size %ld\r\n", dbg("offscreen_init start %p, length %ld, ram size %ld\r\n",
tab_md[0].m_start, tab_md[0].m_length, (long) info->ram_size); tab_md[0].m_start, tab_md[0].m_length, (long) info->ram_size);
pmd.mp_mal = (MD *)NULL; pmd.mp_mal = (MD *) NULL;
} }