agx: Generate runtime-accessible opcode table

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10582>

src/asahi/compiler/agx_opcodes.c.py

@@ -0,0 +1,56 @@
+template = """/*
+ * Copyright (C) 2021 Alyssa Rosenzweig <alyssa@rosenzweig.io>
+ *
+ * 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.
+ */
+
+#include "agx_opcodes.h"
+
+<%
+def make_encoding(encoding):
+   if encoding is None:
+      return "{ 0 }"
+
+   return "{{ {}, {}, {} }}".format(hex(encoding.exact), encoding.length_short, int(encoding.extensible))
+%>
+
+const struct agx_opcode_info agx_opcodes_info[AGX_NUM_OPCODES] = {
+% for opcode in opcodes:
+<%
+   op = opcodes[opcode]
+   imms = ["AGX_IMMEDIATE_" + imm.name.upper() for imm in op.imms]
+   if len(imms) == 0:
+      imms = ["0"]
+%>
+   [AGX_OPCODE_${opcode.upper()}] = {
+      "${opcode}", ${op.srcs}, ${op.dests}, ${" | ".join(imms)},
+      ${make_encoding(op.encoding_32)},
+      ${make_encoding(op.encoding_16)},
+      ${int(op.is_float)},
+      ${int(op.can_eliminate)},
+   },
+% endfor
+};
+"""
+
+from mako.template import Template
+from agx_opcodes import opcodes
+
+print(Template(template).render(opcodes=opcodes))

src/asahi/compiler/meson.build

@@ -37,6 +37,15 @@ idep_agx_opcodes_h = declare_dependency(
   include_directories : include_directories('.'),
 )
 
+agx_opcodes_c = custom_target(
+  'agx_opcodes.c',
+  input : ['agx_opcodes.c.py'],
+  output : 'agx_opcodes.c',
+  command : [prog_python, '@INPUT@'],
+  capture : true,
+  depend_files : files('agx_opcodes.py'),
+)
+
 libasahi_compiler = static_library(
   'asahi_compiler',
   [libasahi_agx_files],