From e88a1dba09be86da7f913ee468a2c2d7940ee945 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jos=C3=A9=20Fonseca?= <jfonseca@vmware.com>
Date: Wed, 24 Apr 2013 13:08:46 +0100
Subject: [PATCH] graw: Simple utilities to dump and disassemble TGSI tokens.

Useful for core dumps, where calling tgsi_dump() from gdb is not an
alternative.
---
 src/gallium/tests/graw/SConscript    |  1 +
 src/gallium/tests/graw/disasm.c      | 90 ++++++++++++++++++++++++++++++++++++
 src/gallium/tests/graw/tgsi_dump.gdb |  6 +++
 3 files changed, 97 insertions(+)
 create mode 100644 src/gallium/tests/graw/disasm.c
 create mode 100644 src/gallium/tests/graw/tgsi_dump.gdb

diff --git a/src/gallium/tests/graw/SConscript b/src/gallium/tests/graw/SConscript
index 1fd2b53..8740ff3 100644
--- a/src/gallium/tests/graw/SConscript
+++ b/src/gallium/tests/graw/SConscript
@@ -16,6 +16,7 @@ if env['platform'] == 'freebsd8':
 
 progs = [
     'clear',
+    'disasm',
     'fs-fragcoord',
     'fs-frontface',
     'fs-test',
diff --git a/src/gallium/tests/graw/disasm.c b/src/gallium/tests/graw/disasm.c
new file mode 100644
index 0000000..0eef8cf
--- /dev/null
+++ b/src/gallium/tests/graw/disasm.c
@@ -0,0 +1,90 @@
+/**************************************************************************
+ *
+ * Copyright 2013 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHOR AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+
+/*
+ * Small utility to disassemble a memory dump of TGSI tokens.
+ *
+ * Dump can be easily obtained from gdb through the tgsi_dump.gdb helper:
+ *
+ *  (gdb) source tgsi_dump.gdb
+ *  (gdb) tgsi_dump state->tokens
+ *
+ * which will generate a tgsi_dump.bin file in the current directory.
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "pipe/p_shader_tokens.h"
+#include "tgsi/tgsi_dump.h"
+
+
+static void
+usage(const char *arg0)
+{
+   fprintf(stderr, "usage: %s [ options ] <tgsi_dump.bin> ...\n", arg0);
+}
+
+
+static void
+disasm(const char *filename)
+{
+   FILE *fp;
+   const size_t max_tokens = 1024*1024;
+   struct tgsi_token *tokens;
+
+   fp = fopen(filename, "rb");
+   if (!fp) {
+      exit(1);
+   }
+   tokens = malloc(max_tokens * sizeof *tokens);
+   fread(tokens, sizeof *tokens, max_tokens, fp);
+
+   tgsi_dump(tokens, 0);
+
+   free(tokens);
+   fclose(fp);
+}
+
+
+int main( int argc, char *argv[] )
+{
+   int i;
+
+   if (argc < 2) {
+      usage(argv[0]);
+      return 0;
+   }
+
+   for (i = 1; i < argc; ++i) {
+      disasm(argv[i]);
+   }
+
+   return 0;
+}
diff --git a/src/gallium/tests/graw/tgsi_dump.gdb b/src/gallium/tests/graw/tgsi_dump.gdb
new file mode 100644
index 0000000..ab294d1
--- /dev/null
+++ b/src/gallium/tests/graw/tgsi_dump.gdb
@@ -0,0 +1,6 @@
+define tgsi_dump
+    set $tokens=(const struct tgsi_header *)$arg0
+    set $nr_tokens = $tokens->HeaderSize + $tokens->BodySize
+    set $tokens_end = &tokens[$nr_tokens]
+    dump memory tgsi_dump.bin $tokens $tokens_end
+end
-- 
2.7.4