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lib/selfboot: don't open code linked list operations 

The list insertion operations were open coded at each location.
Add helper functions which provide the semantics needed by
the selfboot code in a single place.

Change-Id: Ic757255e01934b499def839131c257bde9d0cc93
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/15601
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This commit is contained in:
Aaron Durbin 2016-07-11 12:16:08 -05:00
parent 4934818118
commit edfcce80b2
1 changed files with 19 additions and 12 deletions
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31
src/lib/selfboot.c
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@ -42,6 +42,22 @@ struct segment {
int compression;
};
static void segment_insert_before(struct segment *seg, struct segment *new)
{
new->next = seg;
new->prev = seg->prev;
seg->prev->next = new;
seg->prev = new;
}
static void segment_insert_after(struct segment *seg, struct segment *new)
{
new->next = seg->next;
new->prev = seg;
seg->next->prev = new;
seg->next = new;
}
/* The problem:
* Static executables all want to share the same addresses
* in memory because only a few addresses are reliably present on
@ -148,10 +164,7 @@ static int relocate_segment(unsigned long buffer, struct segment *seg)
}
/* Order by stream offset */
new->next = seg;
new->prev = seg->prev;
seg->prev->next = new;
seg->prev = new;
segment_insert_before(seg, new);
/* compute the new value of start */
start = seg->s_dstaddr;
@ -183,10 +196,7 @@ static int relocate_segment(unsigned long buffer, struct segment *seg)
new->s_filesz = 0;
}
/* Order by stream offset */
new->next = seg->next;
new->prev = seg;
seg->next->prev = new;
seg->next = new;
segment_insert_after(seg, new);
printk(BIOS_SPEW, " late: [0x%016lx, 0x%016lx, 0x%016lx)\n",
new->s_dstaddr,
@ -311,10 +321,7 @@ static int build_self_segment_list(
/* We have found another CODE, DATA or BSS segment */
/* Insert new segment at the end of the list */
new->next = head;
new->prev = head->prev;
head->prev->next = new;
head->prev = new;
segment_insert_before(head, new);
}
return 1;