-def gen_code(entrypoints):
- print textwrap.dedent("""\
- /*
- * Copyright © 2015 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
- /* This file generated from {}, don't edit directly. */
-
- #include "anv_private.h"
-
- struct anv_entrypoint {{
- uint32_t name;
- uint32_t hash;
- }};
-
- /* We use a big string constant to avoid lots of reloctions from the entry
- * point table to lots of little strings. The entries in the entry point table
- * store the index into this big string.
- */
-
- static const char strings[] =""".format(os.path.basename(__file__)))
-
- offsets = []
- i = 0
- for type, name, args, num, h, guard in entrypoints:
- print " \"vk%s\\0\"" % name
- offsets.append(i)
- i += 2 + len(name) + 1
- print " ;"
-
- # Now generate the table of all entry points
-
- print "\nstatic const struct anv_entrypoint entrypoints[] = {"
- for type, name, args, num, h, guard in entrypoints:
- print " { %5d, 0x%08x }," % (offsets[num], h)
- print "};\n"
-
- print textwrap.dedent("""
-
- /* Weak aliases for all potential implementations. These will resolve to
- * NULL if they're not defined, which lets the resolve_entrypoint() function
- * either pick the correct entry point.
- */
- """)
-
- for layer in ["anv", "gen7", "gen75", "gen8", "gen9"]:
- for type, name, args, num, h, guard in entrypoints:
- print_guard_start(guard)
- print "%s %s_%s(%s) __attribute__ ((weak));" % (type, layer, name, args)
- print_guard_end(guard)
- print "\nconst struct anv_dispatch_table %s_layer = {" % layer
- for type, name, args, num, h, guard in entrypoints:
- print_guard_start(guard)
- print " .%s = %s_%s," % (name, layer, name)
- print_guard_end(guard)
- print "};\n"
-
- print textwrap.dedent("""
- static void * __attribute__ ((noinline))
- anv_resolve_entrypoint(const struct gen_device_info *devinfo, uint32_t index)
- {
- if (devinfo == NULL) {
- return anv_layer.entrypoints[index];
- }
-
- switch (devinfo->gen) {
- case 9:
- if (gen9_layer.entrypoints[index])
- return gen9_layer.entrypoints[index];
- /* fall through */
- case 8:
- if (gen8_layer.entrypoints[index])
- return gen8_layer.entrypoints[index];
- /* fall through */
- case 7:
- if (devinfo->is_haswell && gen75_layer.entrypoints[index])
- return gen75_layer.entrypoints[index];
-
- if (gen7_layer.entrypoints[index])
- return gen7_layer.entrypoints[index];
- /* fall through */
- case 0:
- return anv_layer.entrypoints[index];
- default:
- unreachable("unsupported gen\\n");
- }
- }
- """)
-
- # Now generate the hash table used for entry point look up. This is a
- # uint16_t table of entry point indices. We use 0xffff to indicate an entry
- # in the hash table is empty.
-
- map = [NONE] * HASH_SIZE
- collisions = [0] * 10
- for type, name, args, num, h, guard in entrypoints:
- level = 0
- while map[h & HASH_MASK] != NONE:
- h = h + PRIME_STEP
- level = level + 1
- if level > 9:
- collisions[9] += 1
- else:
- collisions[level] += 1
- map[h & HASH_MASK] = num
-
- print "/* Hash table stats:"
- print " * size %d entries" % HASH_SIZE
- print " * collisions entries"
- for i in xrange(10):
- if i == 9:
- plus = "+"
- else:
- plus = " "
-
- print " * %2d%s %4d" % (i, plus, collisions[i])
- print " */\n"
-
- print "#define none 0x%04x\n" % NONE
-
- print "static const uint16_t map[] = {"
- for i in xrange(0, HASH_SIZE, 8):
- print " ",
- for j in xrange(i, i + 8):
- if map[j] & 0xffff == 0xffff:
- print " none,",
- else:
- print "0x%04x," % (map[j] & 0xffff),
- print
-
- print "};"
-
- # Finally we generate the hash table lookup function. The hash function and
- # linear probing algorithm matches the hash table generated above.
-
- print textwrap.dedent("""
- void *
- anv_lookup_entrypoint(const struct gen_device_info *devinfo, const char *name)
- {
- static const uint32_t prime_factor = %d;
- static const uint32_t prime_step = %d;
- const struct anv_entrypoint *e;
- uint32_t hash, h, i;
- const char *p;
-
- hash = 0;
- for (p = name; *p; p++)
- hash = hash * prime_factor + *p;
-
- h = hash;
- do {
- i = map[h & %d];
- if (i == none)
- return NULL;
- e = &entrypoints[i];
- h += prime_step;
- } while (e->hash != hash);
-
- if (strcmp(name, strings + e->name) != 0)
- return NULL;
-
- return anv_resolve_entrypoint(devinfo, i);
- }
- """) % (PRIME_FACTOR, PRIME_STEP, HASH_MASK)