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broadcom/genxml: Support unpacking fixed-point fractional values.

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This was an oversight in the original XML support, because unpacking
wasn't used much.  The new XML-based CL dumper will want it, though.
This commit is contained in:
Eric Anholt
2016-12-30 11:07:34 -08:00
parent 655a32f729
commit ee170c9d83
2 changed files with 25 additions and 4 deletions
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13
src/broadcom/cle/gen_pack_header.py
View File

@@ -326,6 +326,11 @@ class Group(object):
if field.type != "mbo":
convert = None
args = []
args.append('cl')
args.append(str(start + field.start))
args.append(str(start + field.end))
if field.type == "address":
convert = "__gen_unpack_address"
elif field.type == "uint":
@@ -339,17 +344,17 @@ class Group(object):
elif field.type == "offset":
convert = "__gen_unpack_offset"
elif field.type == 'ufixed':
args.append(str(field.fractional_size))
convert = "__gen_unpack_ufixed"
elif field.type == 'sfixed':
args.append(str(field.fractional_size))
convert = "__gen_unpack_sfixed"
else:
print("/* unhandled field %s, type %s */\n" % (name, field.type))
s = None
print(" values->%s = %s(cl, %s, %s);" % \
(field.name, convert, \
start + field.start, start + field.end))
print(" values->%s = %s(%s);" % \
(field.name, convert, ', '.join(args)))
class Value(object):
def __init__(self, attrs):

16
src/broadcom/cle/v3d_packet_helpers.h
View File

@@ -176,6 +176,22 @@ __gen_unpack_sint(const uint8_t *restrict cl, uint32_t start, uint32_t end)
return (val << (64 - size)) >> (64 - size);
}
static inline float
__gen_unpack_sfixed(const uint8_t *restrict cl, uint32_t start, uint32_t end,
uint32_t fractional_size)
{
int32_t bits = __gen_unpack_sint(cl, start, end);
return (float)bits / (1 << fractional_size);
}
static inline float
__gen_unpack_ufixed(const uint8_t *restrict cl, uint32_t start, uint32_t end,
uint32_t fractional_size)
{
int32_t bits = __gen_unpack_uint(cl, start, end);
return (float)bits / (1 << fractional_size);
}
static inline float
__gen_unpack_float(const uint8_t *restrict cl, uint32_t start, uint32_t end)
{