freedreno/decode: Add a simple util to dump csv reg list

Signed-off-by: Rob Clark <rob.clark@oss.qualcomm.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35803>

src/freedreno/decode/dumpregs.c

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its susidiaries.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <stdbool.h>
+#include <stdio.h>
+
+#include "rnndec.h"
+#include "rnnutil.h"
+
+/**
+ * A simple utility to dump a list off offset,name pairs for registers of
+ * the specificied generation.
+ */
+
+int
+main(int argc, char **argv)
+{
+   struct rnn *rnn;
+
+   if (argc != 2) {
+      printf("usage: dumpregs GEN\n");
+      return -1;
+   }
+
+   rnn = rnn_new(true);
+
+   rnn_load(rnn, argv[1]);
+
+   for (unsigned i = 0; i < rnn->dom[0]->subelemsnum; i++) {
+      struct rnndelem *e = rnn->dom[0]->subelems[i];
+
+      if (!rnndec_varmatch(rnn->vc, &e->varinfo))
+         continue;
+
+      printf("0x%05X,%s\n", (uint32_t)e->offset, e->name);
+   }
+
+   return 0;
+}

src/freedreno/decode/meson.build

@@ -233,6 +233,24 @@ crashdec = executable(
   install: install_fd_decode_tools,
 )
 
+dumpregs = executable(
+  'dumpregs',
+  [ 'dumpregs.c' ],
+  include_directories: [
+    inc_freedreno,
+    inc_freedreno_rnn,
+    inc_include,
+    inc_src,
+  ],
+  gnu_symbol_visibility: 'hidden',
+  dependencies: [],
+  link_with: [
+    libfreedreno_cffdec,
+  ],
+  build_by_default: with_tools.contains('freedreno'),
+  install: false,
+)
+
 if with_tests
   crashdec_tests = [
     ['crash', ['-sf']],