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Start clean-up of JTAG driver interface: 

- Factor jtag_add_scan_check to call new jtag_add_scan_check_alloc helper.
- Use conditional logic to define two versions of the helper.
- These helpers will be moved to other files in future patches.


git-svn-id: svn://svn.berlios.de/openocd/trunk@1989 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
zwelch 2009-06-02 03:38:50 +00:00
parent a8f3ba8f5f
commit deed7fb56c
1 changed files with 28 additions and 20 deletions
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48
src/jtag/jtag.c
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@ -740,31 +740,39 @@ static int jtag_check_value_mask_callback(u8 *in, jtag_callback_data_t data1, jt
return jtag_check_value_inner(in, (u8 *)data1, (u8 *)data2, (int)data3);
}
#ifdef HAVE_JTAG_MINIDRIVER_H
void interface_jtag_add_scan_check_alloc(scan_field_t *field)
{
/* We're executing this synchronously, so try to use local storage. */
if (field->num_bits > 32)
{
unsigned num_bytes = TAP_SCAN_BYTES(field->num_bits);
field->in_value = (u8 *)malloc(num_bytes);
field->allocated = 1;
}
else
field->in_value = field->intmp;
}
#else
void interface_jtag_add_scan_check_alloc(scan_field_t *field)
{
unsigned num_bytes = TAP_SCAN_BYTES(field->num_bits);
field->in_value = (u8 *)cmd_queue_alloc(num_bytes);
}
#endif
static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
int in_num_fields, scan_field_t *in_fields, tap_state_t state)
{
for (int i = 0; i < in_num_fields; i++)
{
in_fields[i].allocated = 0;
in_fields[i].modified = 0;
if ((in_fields[i].check_value != NULL) && (in_fields[i].in_value == NULL))
{
in_fields[i].modified = 1;
/* we need storage space... */
#ifdef HAVE_JTAG_MINIDRIVER_H
if (in_fields[i].num_bits <= 32)
{
/* This is enough space and we're executing this synchronously */
in_fields[i].in_value = in_fields[i].intmp;
} else
{
in_fields[i].in_value = (u8 *)malloc(CEIL(in_fields[i].num_bits, 8));
in_fields[i].allocated = 1;
}
#else
in_fields[i].in_value = (u8 *)cmd_queue_alloc(CEIL(in_fields[i].num_bits, 8));
#endif
}
struct scan_field_s *field = &in_fields[i];
field->allocated = 0;
field->modified = 0;
if (field->check_value || field->in_value)
continue;
interface_jtag_add_scan_check_alloc(field);
field->modified = 1;
}
jtag_add_scan(in_num_fields, in_fields, state);