intel-gpu-tools/debugging: shader debugger

high level summary of the files:
  * debug_rdata - get current state from debug registers. Helpful
    when developing the debugger, and could serve some purpose in the
    future.
  * eudb - the debugger itself
  * eviction_macro - generate the proper macro to flush the EU render
    cache until I get control flow working
  * pre_cpp - an evaluating c preprocesser like thing, to be used before
    cpp
  * sr - the system routine, exception handler which runs on the EU
  * test - a very basic test system routine
  * debug.h

1 files changed, 92 insertions, 0 deletions

diff --git a/lib/debug.h b/lib/debug.h
new file mode 100644
index 00000000..af9cf391
--- /dev/null
+++ b/lib/debug.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright © 2011 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.
+ *
+ * Authors:
+ *    Ben Widawsky <ben@bwidawsk.net>
+ *
+ */
+
+#ifndef _DEBUG_H_
+#define _DEBUG_H_
+
+#define DEBUG_PROTOCOL_VERSION 1
+#define COMMUNICATION_OFFSET 0xc00
+#define COMMUNICATION_QWORD 0xc0
+
+#define STATE_EU_MSG 0x47534d65 /* eMSG */
+#define STATE_CPU_ACK 0x4b434163 /* cACK */
+#define STATE_OFFSET 0xc20
+#define STATE_QWORD 0xc2
+
+#define TX_OFFSET 0xc40
+#define TX_QWORD 0xc4
+#define RX_OFFSET 0xc60
+#define RX_QWORD 0xc6
+
+#ifndef GEN_ASM
+typedef uint32_t grf[8];
+typedef uint32_t mrf[8];
+typedef uint8_t cr[12];
+typedef uint32_t sr;
+
+#define DWORD8(x) {x, x, x, x, x, x, x, x}
+
+const static grf protocol_version = DWORD8(DEBUG_PROTOCOL_VERSION);
+const static grf eu_msg = DWORD8(STATE_EU_MSG);
+const static grf cpu_ack = DWORD8(STATE_CPU_ACK);
+
+struct eu_state {
+	mrf m_regs[15];
+	grf g_regs[16];
+	grf pad;
+
+/* 0x400 */
+	cr cr0;
+	sr sr0;
+	uint32_t beef_pad[4];
+	uint8_t pad2[992 + 1024];
+
+/* 0xc00 COMMUNICATION_OFFSET */
+	grf version;
+	grf state_magic;
+	grf eu_tx;
+	grf eu_rx;
+
+	uint8_t pad3[896];
+} __attribute__((packed));
+
+static inline void
+print_reg(uint8_t reg[32]) {
+	uint32_t *dwords = (uint32_t *)reg;
+	printf("%08x %08x %08x %08x %08x %08x %08x %08x",
+		dwords[7], dwords[6], dwords[5], dwords[4],
+		dwords[3], dwords[2], dwords[1], dwords[0]);
+}
+
+static inline void
+print_creg(uint8_t reg[12]) {
+	uint32_t *dwords = (uint32_t *)reg;
+	printf("%08x %08x %08x", dwords[2], dwords[1], dwords[0]);
+}
+#endif
+
+#endif