KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

intel: decoder: extract field value computation 

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>
This commit is contained in:
Lionel Landwerlin 2017-09-30 13:48:36 +01:00
parent 81aee9fd4b
commit ad876f721e
1 changed files with 37 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
src/intel/common/gen_decoder.c
View File

@ -241,14 +241,6 @@ field_value(uint64_t value, int start, int end)
return (value & mask(start, end)) >> (start);
}
static inline uint64_t
field_address(uint64_t value, int start, int end)
{
/* no need to right shift for address/offset */
get_start_end_pos(&start, &end);
return (value & mask(start, end));
}
static struct gen_type
string_to_type(struct parser_context *ctx, const char *s)
{
@ -826,6 +818,32 @@ iter_advance_field(struct gen_field_iterator *iter)
return true;
}
static uint64_t
iter_decode_field_raw(struct gen_field *field,
const uint32_t *p,
const uint32_t *end)
{
uint64_t qw = 0;
if ((field->end - field->start) > 32) {
if ((p + 1) < end)
qw = ((uint64_t) p[1]) << 32;
qw |= p[0];
} else
qw = p[0];
qw = field_value(qw, field->start, field->end);
/* Address & offset types have to be aligned to dwords, their start bit is
* a reminder of the alignment requirement.
*/
if (field->type.kind == GEN_TYPE_ADDRESS ||
field->type.kind == GEN_TYPE_OFFSET)
qw <<= field->start % 32;
return qw;
}
static void
iter_decode_field(struct gen_field_iterator *iter)
{
@ -841,35 +859,28 @@ iter_decode_field(struct gen_field_iterator *iter)
memset(&v, 0, sizeof(v));
if ((iter->field->end - iter->field->start) > 32) {
if (&iter->p[iter->dword + 1] < iter->p_end)
v.qw = ((uint64_t) iter->p[iter->dword+1] << 32);
v.qw |= iter->p[iter->dword];
} else
v.qw = iter->p[iter->dword];
v.qw = iter_decode_field_raw(iter->field,
&iter->p[iter->dword], iter->p_end);
const char *enum_name = NULL;
switch (iter->field->type.kind) {
case GEN_TYPE_UNKNOWN:
case GEN_TYPE_INT: {
uint64_t value = field_value(v.qw, iter->field->start, iter->field->end);
snprintf(iter->value, sizeof(iter->value), "%"PRId64, value);
enum_name = gen_get_enum_name(&iter->field->inline_enum, value);
snprintf(iter->value, sizeof(iter->value), "%"PRId64, v.qw);
enum_name = gen_get_enum_name(&iter->field->inline_enum, v.qw);
break;
}
case GEN_TYPE_UINT: {
uint64_t value = field_value(v.qw, iter->field->start, iter->field->end);
snprintf(iter->value, sizeof(iter->value), "%"PRIu64, value);
enum_name = gen_get_enum_name(&iter->field->inline_enum, value);
snprintf(iter->value, sizeof(iter->value), "%"PRIu64, v.qw);
enum_name = gen_get_enum_name(&iter->field->inline_enum, v.qw);
break;
}
case GEN_TYPE_BOOL: {
const char *true_string =
iter->print_colors ? "\e[0;35mtrue\e[0m" : "true";
snprintf(iter->value, sizeof(iter->value), "%s",
field_value(v.qw, iter->field->start, iter->field->end) ?
true_string : "false");
v.qw ? true_string : "false");
break;
}
case GEN_TYPE_FLOAT:
@ -877,8 +888,7 @@ iter_decode_field(struct gen_field_iterator *iter)
break;
case GEN_TYPE_ADDRESS:
case GEN_TYPE_OFFSET:
snprintf(iter->value, sizeof(iter->value), "0x%08"PRIx64,
field_address(v.qw, iter->start, iter->end));
snprintf(iter->value, sizeof(iter->value), "0x%08"PRIx64, v.qw);
break;
case GEN_TYPE_STRUCT:
snprintf(iter->value, sizeof(iter->value), "<struct %s>",
@ -889,8 +899,7 @@ iter_decode_field(struct gen_field_iterator *iter)
break;
case GEN_TYPE_UFIXED:
snprintf(iter->value, sizeof(iter->value), "%f",
(float) field_value(v.qw, iter->field->start,
iter->field->end) / (1 << iter->field->type.f));
(float) v.qw / (1 << iter->field->type.f));
break;
case GEN_TYPE_SFIXED:
/* FIXME: Sign extend extracted field. */
@ -899,10 +908,8 @@ iter_decode_field(struct gen_field_iterator *iter)
case GEN_TYPE_MBO:
break;
case GEN_TYPE_ENUM: {
uint64_t value = field_value(v.qw, iter->field->start, iter->field->end);
snprintf(iter->value, sizeof(iter->value),
"%"PRId64, value);
enum_name = gen_get_enum_name(iter->field->type.gen_enum, value);
snprintf(iter->value, sizeof(iter->value), "%"PRId64, v.qw);
enum_name = gen_get_enum_name(iter->field->type.gen_enum, v.qw);
break;
}
}