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This matters for embedded devices, but is probably not observably better for PC hosted OpenOCD.

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git-svn-id: svn://svn.berlios.de/openocd/trunk@647 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
oharboe
2008-05-07 14:25:34 +00:00
parent a197e759ff
commit ee793f0fcb
12 changed files with 142 additions and 240 deletions
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43
src/helper/binarybuffer.h
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@@ -26,8 +26,47 @@
* flip_u32 inverses the bit order inside a 32-bit word (31..0 -> 0..31)
*/
extern int buf_set_u32(u8* buffer, unsigned int first, unsigned int num, u32 value);
extern u32 buf_get_u32(u8* buffer, unsigned int first, unsigned int num);
/* inlining this will help show what fn that is taking time during profiling. */
static __inline void buf_set_u32(u8* buffer, unsigned int first, unsigned int num, u32 value)
{
if ((num==32)&&(first==0))
{
buffer[3]=(value>>24)&0xff;
buffer[2]=(value>>16)&0xff;
buffer[1]=(value>>8)&0xff;
buffer[0]=(value>>0)&0xff;
} else
{
unsigned int i;
for (i=first; i<first+num; i++)
{
if (((value >> (i-first))&1) == 1)
buffer[i/8] |= 1 << (i%8);
else
buffer[i/8] &= ~(1 << (i%8));
}
}
}
static __inline u32 buf_get_u32(u8* buffer, unsigned int first, unsigned int num)
{
if ((num==32)&&(first==0))
{
return (((u32)buffer[3])<<24)|(((u32)buffer[2])<<16)|(((u32)buffer[1])<<8)|(((u32)buffer[0])<<0);
} else
{
u32 result = 0;
unsigned int i;
for (i=first; i<first+num; i++)
{
if (((buffer[i/8]>>(i%8))&1) == 1)
result |= 1 << (i-first);
}
return result;
}
}
extern u32 flip_u32(u32 value, unsigned int num);