panfrost: gen_pack: Add an align() modifier
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6797>
diff --git a/src/panfrost/lib/gen_pack.py b/src/panfrost/lib/gen_pack.py
index fed4dc1..e2647ea 100644
--- a/src/panfrost/lib/gen_pack.py
+++ b/src/panfrost/lib/gen_pack.py
@@ -47,6 +47,7 @@
#include <assert.h>
#include <math.h>
#include <inttypes.h>
+#include "util/macros.h"
#include "util/u_math.h"
#define __gen_unpack_float(x, y, z) uif(__gen_unpack_uint(x, y, z))
@@ -213,7 +214,7 @@
assert(not num_str.startswith('0') and 'octals numbers not allowed')
return int(num_str)
-MODIFIERS = ["shr", "minus"]
+MODIFIERS = ["shr", "minus", "align"]
def parse_modifier(modifier):
if modifier is None:
@@ -221,7 +222,13 @@
for mod in MODIFIERS:
if modifier[0:len(mod)] == mod and modifier[len(mod)] == '(' and modifier[-1] == ')':
- return [mod, int(modifier[(len(mod) + 1):-1])]
+ ret = [mod, int(modifier[(len(mod) + 1):-1])]
+ if ret[0] == 'align':
+ align = ret[1]
+ # Make sure the alignment is a power of 2
+ assert(align > 0 and not(align & (align - 1)));
+
+ return ret
print("Invalid modifier")
assert(False)
@@ -444,6 +451,8 @@
value = "{} >> {}".format(value, field.modifier[1])
elif field.modifier[0] == "minus":
value = "{} - {}".format(value, field.modifier[1])
+ elif field.modifier[0] == "align":
+ value = "ALIGN_POT({}, {})".format(value, field.modifier[1])
if field.type == "uint" or field.type == "address":
s = "__gen_uint(%s, %d, %d)" % \
@@ -549,6 +558,9 @@
decoded = '{}({}){}'.format(convert, ', '.join(args), suffix)
print(' values->{} = {};'.format(field.name, decoded))
+ if field.modifier and field.modifier[0] == "align":
+ mask = hex(field.modifier[1] - 1)
+ print(' assert(!(values->{} & {}));'.format(field.name, mask))
def emit_print_function(self):
for field in self.fields: