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-rw-r--r--i915/i915_debug.c299
1 files changed, 299 insertions, 0 deletions
diff --git a/i915/i915_debug.c b/i915/i915_debug.c
new file mode 100644
index 0000000..054b561
--- /dev/null
+++ b/i915/i915_debug.c
@@ -0,0 +1,299 @@
+/**************************************************************************
+ *
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 TUNGSTEN GRAPHICS 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.
+ *
+ **************************************************************************/
+
+#include "i915_reg.h"
+#include "i915_context.h"
+#include <stdio.h>
+
+
+static const char *opcodes[0x20] = {
+ "NOP",
+ "ADD",
+ "MOV",
+ "MUL",
+ "MAD",
+ "DP2ADD",
+ "DP3",
+ "DP4",
+ "FRC",
+ "RCP",
+ "RSQ",
+ "EXP",
+ "LOG",
+ "CMP",
+ "MIN",
+ "MAX",
+ "FLR",
+ "MOD",
+ "TRC",
+ "SGE",
+ "SLT",
+ "TEXLD",
+ "TEXLDP",
+ "TEXLDB",
+ "TEXKILL",
+ "DCL",
+ "0x1a",
+ "0x1b",
+ "0x1c",
+ "0x1d",
+ "0x1e",
+ "0x1f",
+};
+
+
+static const int args[0x20] = {
+ 0, /* 0 nop */
+ 2, /* 1 add */
+ 1, /* 2 mov */
+ 2, /* 3 m ul */
+ 3, /* 4 mad */
+ 3, /* 5 dp2add */
+ 2, /* 6 dp3 */
+ 2, /* 7 dp4 */
+ 1, /* 8 frc */
+ 1, /* 9 rcp */
+ 1, /* a rsq */
+ 1, /* b exp */
+ 1, /* c log */
+ 3, /* d cmp */
+ 2, /* e min */
+ 2, /* f max */
+ 1, /* 10 flr */
+ 1, /* 11 mod */
+ 1, /* 12 trc */
+ 2, /* 13 sge */
+ 2, /* 14 slt */
+ 1,
+ 1,
+ 1,
+ 1,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+};
+
+
+static const char *regname[0x8] = {
+ "R",
+ "T",
+ "CONST",
+ "S",
+ "OC",
+ "OD",
+ "U",
+ "UNKNOWN",
+};
+
+static void print_reg_type_nr( GLuint type, GLuint nr )
+{
+ switch (type) {
+ case REG_TYPE_T:
+ switch (nr) {
+ case T_DIFFUSE: fprintf(stderr, "T_DIFFUSE"); return;
+ case T_SPECULAR: fprintf(stderr, "T_SPECULAR"); return;
+ case T_FOG_W: fprintf(stderr, "T_FOG_W"); return;
+ default: fprintf(stderr, "T_TEX%d", nr); return;
+ }
+ case REG_TYPE_OC:
+ if (nr == 0) {
+ fprintf(stderr, "oC");
+ return;
+ }
+ break;
+ case REG_TYPE_OD:
+ if (nr == 0) {
+ fprintf(stderr, "oD");
+ return;
+ }
+ break;
+ default:
+ break;
+ }
+
+ fprintf(stderr, "%s[%d]", regname[type], nr);
+}
+
+#define REG_SWIZZLE_MASK 0x7777
+#define REG_NEGATE_MASK 0x8888
+
+#define REG_SWIZZLE_XYZW ((SRC_X << A2_SRC2_CHANNEL_X_SHIFT) | \
+ (SRC_Y << A2_SRC2_CHANNEL_Y_SHIFT) | \
+ (SRC_Z << A2_SRC2_CHANNEL_Z_SHIFT) | \
+ (SRC_W << A2_SRC2_CHANNEL_W_SHIFT))
+
+
+static void print_reg_neg_swizzle( GLuint reg )
+{
+ int i;
+
+ if ((reg & REG_SWIZZLE_MASK) == REG_SWIZZLE_XYZW &&
+ (reg & REG_NEGATE_MASK) == 0)
+ return;
+
+ fprintf(stderr, ".");
+
+ for (i = 3 ; i >= 0; i--) {
+ if (reg & (1<<((i*4)+3)))
+ fprintf(stderr, "-");
+
+ switch ((reg>>(i*4)) & 0x7) {
+ case 0: fprintf(stderr, "x"); break;
+ case 1: fprintf(stderr, "y"); break;
+ case 2: fprintf(stderr, "z"); break;
+ case 3: fprintf(stderr, "w"); break;
+ case 4: fprintf(stderr, "0"); break;
+ case 5: fprintf(stderr, "1"); break;
+ default: fprintf(stderr, "?"); break;
+ }
+ }
+}
+
+
+static void print_src_reg( GLuint dword )
+{
+ GLuint nr = (dword >> A2_SRC2_NR_SHIFT) & REG_NR_MASK;
+ GLuint type = (dword >> A2_SRC2_TYPE_SHIFT) & REG_TYPE_MASK;
+ print_reg_type_nr( type, nr );
+ print_reg_neg_swizzle( dword );
+}
+
+void i915_print_ureg( const char *msg, GLuint ureg )
+{
+ fprintf(stderr, "%s: ", msg);
+ print_src_reg( ureg >> 8 );
+ fprintf(stderr, "\n");
+}
+
+static void print_dest_reg( GLuint dword )
+{
+ GLuint nr = (dword >> A0_DEST_NR_SHIFT) & REG_NR_MASK;
+ GLuint type = (dword >> A0_DEST_TYPE_SHIFT) & REG_TYPE_MASK;
+ print_reg_type_nr( type, nr );
+ if ((dword & A0_DEST_CHANNEL_ALL) == A0_DEST_CHANNEL_ALL)
+ return;
+ fprintf(stderr, ".");
+ if (dword & A0_DEST_CHANNEL_X) fprintf(stderr, "x");
+ if (dword & A0_DEST_CHANNEL_Y) fprintf(stderr, "y");
+ if (dword & A0_DEST_CHANNEL_Z) fprintf(stderr, "z");
+ if (dword & A0_DEST_CHANNEL_W) fprintf(stderr, "w");
+}
+
+
+#define GET_SRC0_REG(r0, r1) ((r0<<14)|(r1>>A1_SRC0_CHANNEL_W_SHIFT))
+#define GET_SRC1_REG(r0, r1) ((r0<<8)|(r1>>A2_SRC1_CHANNEL_W_SHIFT))
+#define GET_SRC2_REG(r) (r)
+
+
+static void print_arith_op( GLuint opcode, const GLuint *program )
+{
+ if (opcode != A0_NOP) {
+ print_dest_reg(program[0]);
+ if (program[0] & A0_DEST_SATURATE)
+ fprintf(stderr, " = SATURATE ");
+ else
+ fprintf(stderr, " = ");
+ }
+
+ fprintf(stderr, "%s ", opcodes[opcode]);
+
+ print_src_reg(GET_SRC0_REG(program[0], program[1]));
+ if (args[opcode] == 1) {
+ fprintf(stderr, "\n");
+ return;
+ }
+
+ fprintf(stderr, ", ");
+ print_src_reg(GET_SRC1_REG(program[1], program[2]));
+ if (args[opcode] == 2) {
+ fprintf(stderr, "\n");
+ return;
+ }
+
+ fprintf(stderr, ", ");
+ print_src_reg(GET_SRC2_REG(program[2]));
+ fprintf(stderr, "\n");
+ return;
+}
+
+
+static void print_tex_op( GLuint opcode, const GLuint *program )
+{
+ print_dest_reg(program[0] | A0_DEST_CHANNEL_ALL);
+ fprintf(stderr, " = ");
+
+ fprintf(stderr, "%s ", opcodes[opcode]);
+
+ fprintf(stderr, "S[%d],",
+ program[0] & T0_SAMPLER_NR_MASK);
+
+ print_reg_type_nr( (program[1]>>T1_ADDRESS_REG_TYPE_SHIFT) & REG_TYPE_MASK,
+ (program[1]>>T1_ADDRESS_REG_NR_SHIFT) & REG_NR_MASK );
+ fprintf(stderr, "\n");
+}
+
+static void print_dcl_op( GLuint opcode, const GLuint *program )
+{
+ fprintf(stderr, "%s ", opcodes[opcode]);
+ print_dest_reg(program[0] | A0_DEST_CHANNEL_ALL);
+ fprintf(stderr, "\n");
+}
+
+
+void i915_disassemble_program( const GLuint *program, GLuint sz )
+{
+ GLuint size = program[0] & 0x1ff;
+ GLint i;
+
+ fprintf(stderr, "BEGIN\n");
+
+ if (size+2 != sz) {
+ fprintf(stderr, "%s: program size mismatch %d/%d\n", __FUNCTION__,
+ size+2, sz);
+ exit(1);
+ }
+
+ program ++;
+ for (i = 1 ; i < sz ; i+=3, program+=3) {
+ GLuint opcode = program[0] & (0x1f<<24);
+
+ if ((GLint) opcode >= A0_NOP && opcode <= A0_SLT)
+ print_arith_op(opcode >> 24, program);
+ else if (opcode >= T0_TEXLD && opcode <= T0_TEXKILL)
+ print_tex_op(opcode >> 24, program);
+ else if (opcode == D0_DCL)
+ print_dcl_op(opcode >> 24, program);
+ else
+ fprintf(stderr, "Unknown opcode 0x%x\n", opcode);
+ }
+
+ fprintf(stderr, "END\n\n");
+}
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