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* som.c (som_initialize_reloc_queue): New function.

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(som_reloc_queue_insert): Likewise.
	(som_reloc_queue_fix): Likewise.
	(som_reloc_queue_find): Likewise.
This commit is contained in:
Jeff Law 1993-11-13 00:07:20 +00:00
parent 963ee102f2
commit d125665cbb
2 changed files with 122 additions and 0 deletions
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5
bfd/ChangeLog
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@ -1,5 +1,10 @@
Fri Nov 12 15:29:36 1993 Jeffrey A. Law (law@snake.cs.utah.edu)
* som.c (som_initialize_reloc_queue): New function.
(som_reloc_queue_insert): Likewise.
(som_reloc_queue_fix): Likewise.
(som_reloc_queue_find): Likewise.
* som.c (som_hppa_howto_table): SOM howto relocation table.
(hppa_som_reloc): New function.

117
bfd/som.c
View File

@ -133,6 +133,13 @@ static int log2 PARAMS ((unsigned int));
static bfd_reloc_status_type hppa_som_reloc PARAMS ((bfd *, arelent *,
asymbol *, PTR,
asection *, bfd *));
static void som_initialize_reloc_queue PARAMS ((struct reloc_queue *));
static void som_reloc_queue_insert PARAMS ((unsigned char *, unsigned int,
struct reloc_queue *));
static void som_reloc_queue_fix PARAMS ((struct reloc_queue *, unsigned int));
static int som_reloc_queue_find PARAMS ((unsigned char *, unsigned int,
struct reloc_queue *));
static reloc_howto_type som_hppa_howto_table[] =
{
@ -395,6 +402,116 @@ static reloc_howto_type som_hppa_howto_table[] =
{R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
{R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"}};
/* Initialize the SOM relocation queue. By definition the queue holds
the last four multibyte fixups. */
static void
som_initialize_reloc_queue (queue)
struct reloc_queue *queue;
{
queue[0].reloc = NULL;
queue[0].size = 0;
queue[1].reloc = NULL;
queue[1].size = 0;
queue[2].reloc = NULL;
queue[2].size = 0;
queue[3].reloc = NULL;
queue[3].size = 0;
}
/* Insert a new relocation into the relocation queue. */
static void
som_reloc_queue_insert (p, size, queue)
unsigned char *p;
unsigned int size;
struct reloc_queue *queue;
{
queue[3].reloc = queue[2].reloc;
queue[3].size = queue[2].size;
queue[2].reloc = queue[1].reloc;
queue[2].size = queue[1].size;
queue[1].reloc = queue[0].reloc;
queue[1].size = queue[0].size;
queue[0].reloc = p;
queue[0].size = size;
}
/* When an entry in the relocation queue is reused, the entry moves
to the front of the queue. */
static void
som_reloc_queue_fix (queue, index)
struct reloc_queue *queue;
unsigned int index;
{
if (index == 0)
return;
if (index == 1)
{
unsigned char *tmp1 = queue[0].reloc;
unsigned int tmp2 = queue[0].size;
queue[0].reloc = queue[1].reloc;
queue[0].size = queue[1].size;
queue[1].reloc = tmp1;
queue[1].size = tmp2;
return;
}
if (index == 2)
{
unsigned char *tmp1 = queue[0].reloc;
unsigned int tmp2 = queue[0].size;
queue[0].reloc = queue[2].reloc;
queue[0].size = queue[2].size;
queue[2].reloc = queue[1].reloc;
queue[2].size = queue[1].size;
queue[1].reloc = tmp1;
queue[1].size = tmp2;
return;
}
if (index == 3)
{
unsigned char *tmp1 = queue[0].reloc;
unsigned int tmp2 = queue[0].size;
queue[0].reloc = queue[3].reloc;
queue[0].size = queue[3].size;
queue[3].reloc = queue[2].reloc;
queue[3].size = queue[2].size;
queue[2].reloc = queue[1].reloc;
queue[2].size = queue[1].size;
queue[1].reloc = tmp1;
queue[1].size = tmp2;
return;
}
abort();
}
/* Search for a particular relocation in the relocation queue. */
static int
som_reloc_queue_find (p, size, queue)
unsigned char *p;
unsigned int size;
struct reloc_queue *queue;
{
if (!bcmp (p, queue[0].reloc, size)
&& size == queue[0].size)
return 0;
if (!bcmp (p, queue[1].reloc, size)
&& size == queue[1].size)
return 1;
if (!bcmp (p, queue[2].reloc, size)
&& size == queue[2].size)
return 2;
if (!bcmp (p, queue[3].reloc, size)
&& size == queue[3].size)
return 3;
return -1;
}
/* Return the logarithm of X, base 2, considering X unsigned.
Abort if X is not a power of two -- this should never happen (FIXME:
It will happen on corrupt executables. GDB should give an error, not