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Alexei Babich <a.babich@rez.ru> fix problems with unecessary tailend byte accesses. Use 16 bit access on tailend of a memory read if possible. 

git-svn-id: svn://svn.berlios.de/openocd/trunk@2684 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
oharboe 2009-09-10 13:17:05 +00:00
parent b4acbee47f
commit 3bade442b1
1 changed files with 12 additions and 0 deletions
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12
src/target/target.c
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@ -1239,7 +1239,19 @@ int target_read_buffer(struct target_s *target, uint32_t address, uint32_t size,
address += aligned; address += aligned;
size -= aligned; size -= aligned;
} }
/*prevent byte access when possible (avoid AHB access limitations in some cases)*/
if(size >=2)
{
int aligned = size - (size%2);
retval = target_read_memory(target, address, 2, aligned / 2, buffer);
if (retval != ERROR_OK)
return retval;
buffer += aligned;
address += aligned;
size -= aligned;
}
/* handle tail writes of less than 4 bytes */ /* handle tail writes of less than 4 bytes */
if (size > 0) if (size > 0)
{ {