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Improved XScale performance for embedded hosted OpenOCD 

git-svn-id: svn://svn.berlios.de/openocd/trunk@562 b42882b7-edfa-0310-969c-e2dbd0fdcd60
__archive__
oharboe 2008-04-11 06:45:27 +00:00
parent df9adb7b23
commit a7d3a4a7f8
1 changed files with 36 additions and 35 deletions
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71
src/target/xscale.c
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@ -624,6 +624,8 @@ int xscale_send(target_t *target, u8 *buffer, int count, int size)
{
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
u32 t[3];
int bits[3];
int retval;
@ -678,47 +680,46 @@ int xscale_send(target_t *target, u8 *buffer, int count, int size)
if (size==4)
{
bits[0]=3;
t[0]=0;
bits[1]=32;
t[2]=1;
bits[2]=1;
int endianness = target->endianness;
while (done_count++ < count)
{
if (endianness == TARGET_LITTLE_ENDIAN)
{
output[0]=buffer[0];
output[1]=buffer[1];
output[2]=buffer[2];
output[3]=buffer[3];
} else
{
output[0]=buffer[3];
output[1]=buffer[2];
output[2]=buffer[1];
output[3]=buffer[0];
}
jtag_add_dr_scan(3, fields, TAP_RTI);
buffer += size;
}
} else
{
while (done_count++ < count)
{
/* extract sized element from target-endian buffer, and put it
* into little-endian output buffer
*/
switch (size)
{
case 2:
buf_set_u32(output, 0, 32, target_buffer_get_u16(target, buffer));
break;
case 1:
output[0] = *buffer;
break;
default:
LOG_ERROR("BUG: size neither 4, 2 nor 1");
exit(-1);
case 4:
if (endianness == TARGET_LITTLE_ENDIAN)
{
t[1]=le_to_h_u32(buffer);
} else
{
t[1]=be_to_h_u32(buffer);
}
break;
case 2:
if (endianness == TARGET_LITTLE_ENDIAN)
{
t[1]=le_to_h_u16(buffer);
} else
{
t[1]=be_to_h_u16(buffer);
}
break;
case 1:
t[1]=buffer[0];
break;
default:
LOG_ERROR("BUG: size neither 4, 2 nor 1");
exit(-1);
}
jtag_add_dr_scan(3, fields, TAP_RTI);
jtag_add_dr_out(xscale->jtag_info.chain_pos,
3,
bits,
t,
TAP_RTI);
buffer += size;
}