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Fix various mistakes

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-01-11 13:43:31 +01:00
parent 796d2fa20e
commit 669a1c01fb
1 changed files with 50 additions and 34 deletions
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50
lib/relocator.c
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@ -36,6 +36,7 @@ grub_relocator_new (void)
ret->postchunks = ~(grub_addr_t) 0; ret->postchunks = ~(grub_addr_t) 0;
ret->relocators_size = grub_relocator_jumper_size; ret->relocators_size = grub_relocator_jumper_size;
grub_dprintf ("relocator", "relocators_size=%d\n", ret->relocators_size);
return ret; return ret;
} }
@ -198,14 +199,17 @@ malloc_in_range (struct grub_relocator *rel,
} }
if (!rb) if (!rb)
{
grub_dprintf ("relocator", "no suitable region found\n");
return 0; return 0;
}
grub_dprintf ("relocator", "trying region %p - %p\n", rb, rb + rb->size + 1); grub_dprintf ("relocator", "trying region %p - %p\n", rb, rb + rb->size + 1);
hb = get_best_header (rel, start, end, align, size, rb, &hbp, &best_addr, hb = get_best_header (rel, start, end, align, size, rb, &hbp, &best_addr,
from_low_priv, collisioncheck); from_low_priv, collisioncheck);
grub_dprintf ("relocator", "best header %p\n", hb); grub_dprintf ("relocator", "best header %p/%x\n", hb, best_addr);
if (!hb) if (!hb)
{ {
@ -226,13 +230,15 @@ malloc_in_range (struct grub_relocator *rel,
newreg_presize = newreg_start - newreg_raw_start; newreg_presize = newreg_start - newreg_raw_start;
newreg_size = rb->size - (newreg_start - (grub_addr_t) rb); newreg_size = rb->size - (newreg_start - (grub_addr_t) rb);
if ((hb->size << GRUB_MM_ALIGN_LOG2) >= newreg_start if ((hb->size << GRUB_MM_ALIGN_LOG2) >= newreg_start
+ (grub_addr_t) rb) - (grub_addr_t) rb)
{ {
grub_mm_header_t newhnext = hb->next; grub_mm_header_t newhnext = hb->next;
grub_size_t newhsize = ((hb->size << GRUB_MM_ALIGN_LOG2) grub_size_t newhsize = ((hb->size << GRUB_MM_ALIGN_LOG2)
- newreg_start - (newreg_start
- (grub_addr_t) rb) >> GRUB_MM_ALIGN_LOG2; - (grub_addr_t) rb)) >> GRUB_MM_ALIGN_LOG2;
new_header = (void *) (newreg_start + sizeof (*rb)); new_header = (void *) (newreg_start + sizeof (*rb));
if (newhnext == hb->next)
newhnext = newhnext;
new_header->next = newhnext; new_header->next = newhnext;
new_header->size = newhsize; new_header->size = newhsize;
new_header->magic = GRUB_MM_FREE_MAGIC; new_header->magic = GRUB_MM_FREE_MAGIC;
@ -240,15 +246,15 @@ malloc_in_range (struct grub_relocator *rel,
else else
{ {
new_header = hb->next; new_header = hb->next;
if (new_header == hb)
new_header = (void *) (newreg_start + sizeof (*rb));
} }
if (hbp || new_header)
{ {
struct grub_mm_header *newregfirst = rb->first; struct grub_mm_header *newregfirst = rb->first;
struct grub_mm_region *newregnext = rb->next; struct grub_mm_region *newregnext = rb->next;
struct grub_mm_region *newreg = (void *) newreg_start; struct grub_mm_region *newreg = (void *) newreg_start;
if (hbp)
hbp->next = new_header; hbp->next = new_header;
else if (newregfirst == hb)
newregfirst = new_header; newregfirst = new_header;
newreg->first = newregfirst; newreg->first = newregfirst;
newreg->next = newregnext; newreg->next = newregnext;
@ -259,13 +265,6 @@ malloc_in_range (struct grub_relocator *rel,
else else
grub_mm_base = newreg; grub_mm_base = newreg;
} }
else
{
if (rbp)
rbp->next = rb->next;
else
grub_mm_base = rb->next;
}
*res = best_addr; *res = best_addr;
return 1; return 1;
} }
@ -296,8 +295,12 @@ malloc_in_range (struct grub_relocator *rel,
foll->next = hb->next; foll->next = hb->next;
else else
foll = hb->next; foll = hb->next;
if (rb->first == hbp)
if (rb->first == hb)
rb->first = foll; rb->first = foll;
if (rb->first == hb)
rb->first = (void *) (rb + 1);
hbp->next = foll;
} }
*res = best_addr; *res = best_addr;
return 1; return 1;
@ -320,7 +323,7 @@ grub_relocator_alloc_chunk_addr (struct grub_relocator *rel, void **src,
if (chunk->target > target && chunk->src > max_addr) if (chunk->target > target && chunk->src > max_addr)
max_addr = chunk->src; max_addr = chunk->src;
if (chunk->target + chunk->size <= target if (chunk->target + chunk->size <= target
&& chunk->src + chunk->size < min_addr && chunk->src + chunk->size > min_addr
&& chunk->src < rel->postchunks) && chunk->src < rel->postchunks)
min_addr = chunk->src + chunk->size; min_addr = chunk->src + chunk->size;
if ((chunk->target <= target && target < chunk->target + chunk->size) if ((chunk->target <= target && target < chunk->target + chunk->size)
@ -356,6 +359,7 @@ grub_relocator_alloc_chunk_addr (struct grub_relocator *rel, void **src,
if (malloc_in_range (rel, min_addr, target, 0, size, &start, 1, 0)) if (malloc_in_range (rel, min_addr, target, 0, size, &start, 1, 0))
break; break;
grub_dprintf ("relocator", "not allocated\n");
grub_free (chunk); grub_free (chunk);
return grub_error (GRUB_ERR_OUT_OF_MEMORY, "out of memory"); return grub_error (GRUB_ERR_OUT_OF_MEMORY, "out of memory");
} }
@ -379,11 +383,15 @@ grub_relocator_alloc_chunk_addr (struct grub_relocator *rel, void **src,
rel->highestnonpostaddr = start + size; rel->highestnonpostaddr = start + size;
} }
grub_dprintf ("relocator", "relocators_size=%d\n", rel->relocators_size);
if (start < target) if (start < target)
rel->relocators_size += grub_relocator_backward_size; rel->relocators_size += grub_relocator_backward_size;
if (start > target) if (start > target)
rel->relocators_size += grub_relocator_forward_size; rel->relocators_size += grub_relocator_forward_size;
grub_dprintf ("relocator", "relocators_size=%d\n", rel->relocators_size);
chunk->src = start; chunk->src = start;
chunk->target = target; chunk->target = target;
chunk->size = size; chunk->size = size;
@ -410,6 +418,8 @@ grub_relocator_alloc_chunk_align (struct grub_relocator *rel, void **src,
if (malloc_in_range (rel, min_addr, max_addr, align, if (malloc_in_range (rel, min_addr, max_addr, align,
size, &start, 1, 1)) size, &start, 1, 1))
{ {
grub_dprintf ("relocator", "allocated 0x%llx/0x%llx\n",
(unsigned long long) start, (unsigned long long) start);
chunk->src = start; chunk->src = start;
chunk->target = start; chunk->target = start;
chunk->size = size; chunk->size = size;
@ -499,11 +509,17 @@ grub_relocator_prepare_relocs (struct grub_relocator *rel, grub_addr_t addr,
grub_addr_t rels; grub_addr_t rels;
grub_addr_t rels0; grub_addr_t rels0;
if (!malloc_in_range (rel, 0, ~(grub_addr_t)0, grub_relocator_align, grub_dprintf ("relocator", "Preparing relocs (size=%d)\n",
rel->relocators_size);
if (!malloc_in_range (rel, 0, ~(grub_addr_t)0 - rel->relocators_size + 1,
grub_relocator_align,
rel->relocators_size, &rels0, 1, 1)) rel->relocators_size, &rels0, 1, 1))
return grub_error (GRUB_ERR_OUT_OF_MEMORY, "out of memory"); return grub_error (GRUB_ERR_OUT_OF_MEMORY, "out of memory");
rels = rels0; rels = rels0;
grub_dprintf ("relocator", "Relocs allocated\n");
for (chunk = rel->chunks; chunk; chunk = chunk->next) for (chunk = rel->chunks; chunk; chunk = chunk->next)
{ {
if (chunk->src < chunk->target) if (chunk->src < chunk->target)