radv: rebase radv_entrypoints_gen.py on anv_entrypoints_gen.py

The two generators forked from each other, and they remain basically the
same. This rebases the radv version on the anv version, but with the
radv changes ported over. The result is that we get rid of the "cat |"
madness and gain mako, correct "generated by" attributions, and write
files out directly.

The only differences between the output is whitespace and comments.

Signed-off-by: Dylan Baker <[email protected]>
Acked-by: Dave Airlie <[email protected]>

1 files changed, 282 insertions, 268 deletions

diff --git a/src/amd/vulkan/radv_entrypoints_gen.py b/src/amd/vulkan/radv_entrypoints_gen.py
index 9f5a4f3ee39..9634f76fcd6 100644
--- a/src/amd/vulkan/radv_entrypoints_gen.py
+++ b/src/amd/vulkan/radv_entrypoints_gen.py
@@ -1,6 +1,6 @@
 # coding=utf-8
 #
-# Copyright © 2015 Intel Corporation
+# Copyright © 2015, 2017 Intel Corporation
 #
 # Permission is hereby granted, free of charge, to any person obtaining a
 # copy of this software and associated documentation files (the "Software"),
@@ -22,36 +22,41 @@
 # IN THE SOFTWARE.
 #
 
-import sys
-import xml.etree.ElementTree as ET
-
-max_api_version = 1.0
-
-supported_extensions = [
-   'VK_AMD_draw_indirect_count',
-   'VK_NV_dedicated_allocation',
-   'VK_KHR_descriptor_update_template',
-   'VK_KHR_get_physical_device_properties2',
-   'VK_KHR_incremental_present',
-   'VK_KHR_maintenance1',
-   'VK_KHR_push_descriptor',
-   'VK_KHR_sampler_mirror_clamp_to_edge',
-   'VK_KHR_shader_draw_parameters',
-   'VK_KHR_surface',
-   'VK_KHR_swapchain',
-   'VK_KHR_wayland_surface',
-   'VK_KHR_xcb_surface',
-   'VK_KHR_xlib_surface',
-   'VK_KHR_get_memory_requirements2',
-   'VK_KHR_dedicated_allocation',
-   'VK_KHR_external_memory_capabilities',
-   'VK_KHR_external_memory',
-   'VK_KHR_external_memory_fd',
-   'VK_KHR_storage_buffer_storage_class',
-   'VK_KHR_variable_pointers',
-   'VK_KHR_external_semaphore_capabilities',
-   'VK_KHR_external_semaphore',
-   'VK_KHR_external_semaphore_fd'
+import argparse
+import functools
+import os
+import textwrap
+import xml.etree.cElementTree as et
+
+from mako.template import Template
+
+MAX_API_VERSION = 1.0
+
+SUPPORTED_EXTENSIONS = [
+    'VK_AMD_draw_indirect_count',
+    'VK_NV_dedicated_allocation',
+    'VK_KHR_descriptor_update_template',
+    'VK_KHR_get_physical_device_properties2',
+    'VK_KHR_incremental_present',
+    'VK_KHR_maintenance1',
+    'VK_KHR_push_descriptor',
+    'VK_KHR_sampler_mirror_clamp_to_edge',
+    'VK_KHR_shader_draw_parameters',
+    'VK_KHR_surface',
+    'VK_KHR_swapchain',
+    'VK_KHR_wayland_surface',
+    'VK_KHR_xcb_surface',
+    'VK_KHR_xlib_surface',
+    'VK_KHR_get_memory_requirements2',
+    'VK_KHR_dedicated_allocation',
+    'VK_KHR_external_memory_capabilities',
+    'VK_KHR_external_memory',
+    'VK_KHR_external_memory_fd',
+    'VK_KHR_storage_buffer_storage_class',
+    'VK_KHR_variable_pointers',
+    'VK_KHR_external_semaphore_capabilities',
+    'VK_KHR_external_semaphore',
+    'VK_KHR_external_semaphore_fd',
 ]
 
 # We generate a static hash table for entry point lookup
@@ -59,54 +64,204 @@ supported_extensions = [
 # function and a power-of-two size table. The prime numbers are determined
 # experimentally.
 
-none = 0xffff
-hash_size = 256
-u32_mask = 2**32 - 1
-hash_mask = hash_size - 1
+TEMPLATE_H = Template(textwrap.dedent("""\
+    /* This file generated from ${filename}, don't edit directly. */
+
+    struct radv_dispatch_table {
+       union {
+          void *entrypoints[${len(entrypoints)}];
+          struct {
+          % for _, name, _, _, _, guard in entrypoints:
+            % if guard is not None:
+    #ifdef ${guard}
+              PFN_vk${name} ${name};
+    #else
+              void *${name};
+    # endif
+            % else:
+              PFN_vk${name} ${name};
+            % endif
+          % endfor
+          };
+       };
+    };
+
+    % for type_, name, args, num, h, guard in entrypoints:
+      % if guard is not None:
+    #ifdef ${guard}
+      % endif
+      ${type_} radv_${name}(${args});
+      % if guard is not None:
+    #endif // ${guard}
+      % endif
+    % endfor
+    """), output_encoding='utf-8')
+
+TEMPLATE_C = Template(textwrap.dedent(u"""\
+    /*
+     * 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 ${filename}, don't edit directly. */
+
+    #include "radv_private.h"
+
+    struct radv_entrypoint {
+       uint32_t name;
+       uint32_t hash;
+    };
+
+    /* We use a big string constant to avoid lots of reloctions from the entry
+     * point table to lots of little strings. The entries in the entry point table
+     * store the index into this big string.
+     */
+
+    static const char strings[] =
+    % for _, name, _, _, _, _ in entrypoints:
+        "vk${name}\\0"
+    % endfor
+    ;
+
+    static const struct radv_entrypoint entrypoints[] = {
+    % for _, _, _, num, h, _ in entrypoints:
+        { ${offsets[num]}, ${'{:0=#8x}'.format(h)} },
+    % endfor
+    };
+
+    /* 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 ['radv']:
+      % for type_, name, args, _, _, guard in entrypoints:
+        % if guard is not None:
+    #ifdef ${guard}
+        % endif
+        ${type_} ${layer}_${name}(${args}) __attribute__ ((weak));
+        % if guard is not None:
+    #endif // ${guard}
+        % endif
+      % endfor
+
+      const struct radv_dispatch_table ${layer}_layer = {
+      % for _, name, args, _, _, guard in entrypoints:
+        % if guard is not None:
+    #ifdef ${guard}
+        % endif
+        .${name} = ${layer}_${name},
+        % if guard is not None:
+    #endif // ${guard}
+        % endif
+      % endfor
+      };
+    % endfor
+
+    static void * __attribute__ ((noinline))
+    radv_resolve_entrypoint(uint32_t index)
+    {
+       return radv_layer.entrypoints[index];
+    }
+
+    /* Hash table stats:
+     * size ${hash_size} entries
+     * collisions entries:
+    % for i in xrange(10):
+     *     ${i}${'+' if i == 9 else ''}     ${collisions[i]}
+    % endfor
+     */
+
+    #define none ${'{:#x}'.format(none)}
+    static const uint16_t map[] = {
+    % for i in xrange(0, hash_size, 8):
+      % for j in xrange(i, i + 8):
+        ## This is 6 because the 0x is counted in the length
+        % if mapping[j] & 0xffff == 0xffff:
+          none,
+        % else:
+          ${'{:0=#6x}'.format(mapping[j] & 0xffff)},
+        % endif
+      % endfor
+    % endfor
+    };
+
+    void *
+    radv_lookup_entrypoint(const char *name)
+    {
+       static const uint32_t prime_factor = ${prime_factor};
+       static const uint32_t prime_step = ${prime_step};
+       const struct radv_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 & ${hash_mask}];
+          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 radv_resolve_entrypoint(i);
+    }"""), output_encoding='utf-8')
+
+NONE = 0xffff
+HASH_SIZE = 256
+U32_MASK = 2**32 - 1
+HASH_MASK = HASH_SIZE - 1
+
+PRIME_FACTOR = 5024183
+PRIME_STEP = 19
+
+
+def cal_hash(name):
+    """Calculate the same hash value that Mesa will calculate in C."""
+    return functools.reduce(
+        lambda h, c: (h * PRIME_FACTOR + ord(c)) & U32_MASK, name, 0)
 
-prime_factor = 5024183
-prime_step = 19
 
-def hash(name):
-    h = 0;
-    for c in name:
-        h = (h * prime_factor + ord(c)) & u32_mask
-
-    return h
-
-def print_guard_start(guard):
-    if guard is not None:
-        print "#ifdef {0}".format(guard)
-
-def print_guard_end(guard):
-    if guard is not None:
-        print "#endif // {0}".format(guard)
-
-opt_header = False
-opt_code = False
-
-if (sys.argv[1] == "header"):
-    opt_header = True
-    sys.argv.pop()
-elif (sys.argv[1] == "code"):
-    opt_code = True
-    sys.argv.pop()
-
-# Extract the entry points from the registry
 def get_entrypoints(doc, entrypoints_to_defines):
+    """Extract the entry points from the registry."""
     entrypoints = []
 
     enabled_commands = set()
     for feature in doc.findall('./feature'):
         assert feature.attrib['api'] == 'vulkan'
-        if float(feature.attrib['number']) > max_api_version:
+        if float(feature.attrib['number']) > MAX_API_VERSION:
             continue
 
         for command in feature.findall('./require/command'):
             enabled_commands.add(command.attrib['name'])
 
     for extension in doc.findall('.extensions/extension'):
-        if extension.attrib['name'] not in supported_extensions:
+        if extension.attrib['name'] not in SUPPORTED_EXTENSIONS:
             continue
 
         assert extension.attrib['supported'] == 'vulkan'
@@ -122,219 +277,78 @@ def get_entrypoints(doc, entrypoints_to_defines):
             continue
 
         shortname = fullname[2:]
-        params = map(lambda p: "".join(p.itertext()), command.findall('./param'))
+        params = (''.join(p.itertext()) for p in command.findall('./param'))
         params = ', '.join(params)
-        if fullname in entrypoints_to_defines:
-            guard = entrypoints_to_defines[fullname]
-        else:
-            guard = None
-        entrypoints.append((type, shortname, params, index, hash(fullname), guard))
+        guard = entrypoints_to_defines.get(fullname)
+        entrypoints.append((type, shortname, params, index, cal_hash(fullname), guard))
         index += 1
 
     return entrypoints
 
-# Maps entry points to extension defines
+
 def get_entrypoints_defines(doc):
+    """Maps entry points to extension defines."""
     entrypoints_to_defines = {}
-    extensions = doc.findall('./extensions/extension')
-    for extension in extensions:
-        define = extension.get('protect')
-        entrypoints = extension.findall('./require/command')
-        for entrypoint in entrypoints:
-            fullname = entrypoint.get('name')
-            entrypoints_to_defines[fullname] = define
-    return entrypoints_to_defines
 
-doc = ET.parse(sys.stdin)
-entrypoints = get_entrypoints(doc, get_entrypoints_defines(doc))
+    for extension in doc.findall('./extensions/extension[@protect]'):
+        define = extension.attrib['protect']
 
-# For outputting entrypoints.h we generate a radv_EntryPoint() prototype
-# per entry point.
+        for entrypoint in extension.findall('./require/command'):
+            fullname = entrypoint.attrib['name']
+            entrypoints_to_defines[fullname] = define
 
-if opt_header:
-    print "/* This file generated from vk_gen.py, don't edit directly. */\n"
+    return entrypoints_to_defines
 
-    print "struct radv_dispatch_table {"
-    print "   union {"
-    print "      void *entrypoints[%d];" % len(entrypoints)
-    print "      struct {"
 
-    for type, name, args, num, h, guard in entrypoints:
-        if guard is not None:
-            print "#ifdef {0}".format(guard)
-            print "         PFN_vk{0} {0};".format(name)
-            print "#else"
-            print "         void *{0};".format(name)
-            print "#endif"
-        else:
-            print "         PFN_vk{0} {0};".format(name)
-    print "      };\n"
-    print "   };\n"
-    print "};\n"
-
-    for type, name, args, num, h, guard in entrypoints:
-        print_guard_start(guard)
-        print "%s radv_%s(%s);" % (type, name, args)
-        print_guard_end(guard)
-    exit()
-
-
-
-print """/*
- * 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.
- */
-
-/* DO NOT EDIT! This is a generated file. */
-
-#include "radv_private.h"
-
-struct radv_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[] ="""
-
-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 radv_entrypoint entrypoints[] = {"
-for type, name, args, num, h, guard in entrypoints:
-    print "   { %5d, 0x%08x }," % (offsets[num], h)
-print "};\n"
-
-print """
-
-/* 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 [ "radv" ]:
-    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 radv_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 """
-
-static void * __attribute__ ((noinline))
-radv_resolve_entrypoint(uint32_t index)
-{
-   return radv_layer.entrypoints[index];
-}
-"""
-
-# 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 for f in xrange(hash_size)]
-collisions = [0 for f in xrange(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,",
+def gen_code(entrypoints):
+    """Generate the C code."""
+    i = 0
+    offsets = []
+    for _, name, _, _, _, _ in entrypoints:
+        offsets.append(i)
+        i += 2 + len(name) + 1
+
+    mapping = [NONE] * HASH_SIZE
+    collisions = [0] * 10
+    for _, name, _, num, h, _ in entrypoints:
+        level = 0
+        while mapping[h & HASH_MASK] != NONE:
+            h = h + PRIME_STEP
+            level = level + 1
+        if level > 9:
+            collisions[9] += 1
         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 """
-void *
-radv_lookup_entrypoint(const char *name)
-{
-   static const uint32_t prime_factor = %d;
-   static const uint32_t prime_step = %d;
-   const struct radv_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 radv_resolve_entrypoint(i);
-}
-""" % (prime_factor, prime_step, hash_mask)
+            collisions[level] += 1
+        mapping[h & HASH_MASK] = num
+
+    return TEMPLATE_C.render(entrypoints=entrypoints,
+                             offsets=offsets,
+                             collisions=collisions,
+                             mapping=mapping,
+                             hash_mask=HASH_MASK,
+                             prime_step=PRIME_STEP,
+                             prime_factor=PRIME_FACTOR,
+                             none=NONE,
+                             hash_size=HASH_SIZE,
+                             filename=os.path.basename(__file__))
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--outdir', help='Where to write the files.',
+                        required=True)
+    parser.add_argument('--xml', help='Vulkan API XML file.', required=True)
+    args = parser.parse_args()
+
+    doc = et.parse(args.xml)
+    entrypoints = get_entrypoints(doc, get_entrypoints_defines(doc))
+
+    with open(os.path.join(args.outdir, 'radv_entrypoints.h'), 'wb') as f:
+        f.write(TEMPLATE_H.render(entrypoints=entrypoints,
+                                  filename=os.path.basename(__file__)))
+    with open(os.path.join(args.outdir, 'radv_entrypoints.c'), 'wb') as f:
+        f.write(gen_code(entrypoints))
+
+
+if __name__ == '__main__':
+    main()