asahi: Add hexdump utility

Used in our decoder.

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>

2 files changed, 90 insertions, 0 deletions

diff --git a/src/asahi/lib/hexdump.h b/src/asahi/lib/hexdump.h
new file mode 100644
index 00000000000..44d075358ee
--- /dev/null
+++ b/src/asahi/lib/hexdump.h
@@ -0,0 +1,70 @@
+/*
+ * 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.
+ */
+
+#ifndef __HEXDUMP_H
+#define __HEXDUMP_H
+
+static void
+hexdump(FILE *fp, const uint8_t *hex, size_t cnt, bool with_strings)
+{
+   for (unsigned i = 0; i < cnt; ++i) {
+      if ((i & 0xF) == 0)
+         fprintf(fp, "%06X  ", i);
+
+      uint8_t v = hex[i];
+
+      if (v == 0 && (i & 0xF) == 0) {
+         /* Check if we're starting an aligned run of zeroes */
+         unsigned zero_count = 0;
+
+         for (unsigned j = i; j < cnt; ++j) {
+            if (hex[j] == 0)
+               zero_count++;
+            else
+               break;
+         }
+
+         if (zero_count >= 32) {
+            fprintf(fp, "*\n");
+            i += (zero_count & ~0xF) - 1;
+            continue;
+         }
+      }
+
+      fprintf(fp, "%02X ", hex[i]);
+      if ((i & 0xF) == 0xF && with_strings) {
+         fprintf(fp, " | ");
+         for (unsigned j = i & ~0xF; j <= i; ++j) {
+            uint8_t c = hex[j];
+            fputc((c < 32 || c > 128) ? '.' : c, fp);
+         }
+      }
+
+      if ((i & 0xF) == 0xF)
+         fprintf(fp, "\n");
+   }
+
+   fprintf(fp, "\n");
+}
+
+#endif
diff --git a/src/asahi/lib/meson.build b/src/asahi/lib/meson.build
new file mode 100644
index 00000000000..a2677d70227
--- /dev/null
+++ b/src/asahi/lib/meson.build
@@ -0,0 +1,20 @@
+# Copyright © 2018 Rob Clark
+# Copyright © 2019 Collabora
+
+# 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 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.