Mesa (master): ilo: cleanup ISA DW1 decoding

[Chia-I Wu]

Module: Mesa
Branch: master
Commit: 9ed376a76c37755f4408aa5cdb754178143f804f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=9ed376a76c37755f4408aa5cdb754178143f804f

Author: Chia-I Wu <olvaffe at gmail.com>
Date:   Sat Feb 14 02:23:53 2015 +0800

ilo: cleanup ISA DW1 decoding

Decode the higher and lower 16 bits separately.

---

 .../drivers/ilo/shader/toy_compiler_disasm.c       |   89 ++++++++++++--------
 1 file changed, 55 insertions(+), 34 deletions(-)

diff --git a/src/gallium/drivers/ilo/shader/toy_compiler_disasm.c b/src/gallium/drivers/ilo/shader/toy_compiler_disasm.c
index 76b2699..4c490f1 100644
--- a/src/gallium/drivers/ilo/shader/toy_compiler_disasm.c
+++ b/src/gallium/drivers/ilo/shader/toy_compiler_disasm.c
@@ -284,35 +284,43 @@ disasm_inst_jip_in_dw1_high_gen6(const struct disasm_inst *inst)
 }
 
 static void
-disasm_inst_decode_dw1_gen6(struct disasm_inst *inst, uint32_t dw1)
+disasm_inst_decode_dw1_low_gen6(struct disasm_inst *inst, uint32_t dw1)
 {
-   ILO_DEV_ASSERT(inst->dev, 6, 8);
+   ILO_DEV_ASSERT(inst->dev, 6, 7.5);
 
-   if (ilo_dev_gen(inst->dev) >= ILO_GEN(8)) {
-      inst->flag_subreg = GEN_EXTRACT(dw1, GEN8_INST_FLAG_SUBREG);
-      inst->flag_reg = GEN_EXTRACT(dw1, GEN8_INST_FLAG_REG);
-      inst->mask_ctrl = GEN_EXTRACT(dw1, GEN8_INST_MASKCTRL);
-
-      inst->dst.base.file = GEN_EXTRACT(dw1, GEN8_INST_DST_FILE);
-      inst->dst.base.type = GEN_EXTRACT(dw1, GEN8_INST_DST_TYPE);
-      inst->src0.base.file = GEN_EXTRACT(dw1, GEN8_INST_SRC0_FILE);
-      inst->src0.base.type = GEN_EXTRACT(dw1, GEN8_INST_SRC0_TYPE);
-   } else {
-      inst->dst.base.file = GEN_EXTRACT(dw1, GEN6_INST_DST_FILE);
-      inst->dst.base.type = GEN_EXTRACT(dw1, GEN6_INST_DST_TYPE);
-      inst->src0.base.file = GEN_EXTRACT(dw1, GEN6_INST_SRC0_FILE);
-      inst->src0.base.type = GEN_EXTRACT(dw1, GEN6_INST_SRC0_TYPE);
-      inst->src1.base.file = GEN_EXTRACT(dw1, GEN6_INST_SRC1_FILE);
-      inst->src1.base.type = GEN_EXTRACT(dw1, GEN6_INST_SRC1_TYPE);
+   inst->dst.base.file = GEN_EXTRACT(dw1, GEN6_INST_DST_FILE);
+   inst->dst.base.type = GEN_EXTRACT(dw1, GEN6_INST_DST_TYPE);
+   inst->src0.base.file = GEN_EXTRACT(dw1, GEN6_INST_SRC0_FILE);
+   inst->src0.base.type = GEN_EXTRACT(dw1, GEN6_INST_SRC0_TYPE);
+   inst->src1.base.file = GEN_EXTRACT(dw1, GEN6_INST_SRC1_FILE);
+   inst->src1.base.type = GEN_EXTRACT(dw1, GEN6_INST_SRC1_TYPE);
 
-      if (ilo_dev_gen(inst->dev) >= ILO_GEN(7))
-         inst->nib_ctrl = (bool) (dw1 & GEN7_INST_NIBCTRL);
-   }
+   if (ilo_dev_gen(inst->dev) >= ILO_GEN(7))
+      inst->nib_ctrl = (bool) (dw1 & GEN7_INST_NIBCTRL);
+}
 
-   if (disasm_inst_jip_in_dw1_high_gen6(inst)) {
-      inst->u.imm32 = dw1 >> 16;
-      return;
-   }
+static void
+disasm_inst_decode_dw1_low_gen8(struct disasm_inst *inst, uint32_t dw1)
+{
+   ILO_DEV_ASSERT(inst->dev, 8, 8);
+
+   inst->flag_subreg = GEN_EXTRACT(dw1, GEN8_INST_FLAG_SUBREG);
+   inst->flag_reg = GEN_EXTRACT(dw1, GEN8_INST_FLAG_REG);
+   inst->mask_ctrl = GEN_EXTRACT(dw1, GEN8_INST_MASKCTRL);
+
+   inst->dst.base.file = GEN_EXTRACT(dw1, GEN8_INST_DST_FILE);
+   inst->dst.base.type = GEN_EXTRACT(dw1, GEN8_INST_DST_TYPE);
+   inst->src0.base.file = GEN_EXTRACT(dw1, GEN8_INST_SRC0_FILE);
+   inst->src0.base.type = GEN_EXTRACT(dw1, GEN8_INST_SRC0_TYPE);
+
+   inst->dst.base.addr_imm = GEN_EXTRACT(dw1, GEN8_INST_DST_ADDR_IMM_BIT9) <<
+      GEN8_INST_DST_ADDR_IMM_BIT9__SHR;
+}
+
+static void
+disasm_inst_decode_dw1_high_gen6(struct disasm_inst *inst, uint32_t dw1)
+{
+   ILO_DEV_ASSERT(inst->dev, 6, 8);
 
    inst->dst.base.addr_mode = GEN_EXTRACT(dw1, GEN6_INST_DST_ADDRMODE);
 
@@ -331,18 +339,15 @@ disasm_inst_decode_dw1_gen6(struct disasm_inst *inst, uint32_t dw1)
          inst->dst.base.addr_subreg =
             GEN_EXTRACT(dw1, GEN8_INST_DST_ADDR_SUBREG);
 
+         /* bit 9 is already set in disasm_inst_decode_dw1_low_gen8() */
          if (inst->access_mode == GEN6_ALIGN_1) {
-            inst->dst.base.addr_imm =
+            inst->dst.base.addr_imm |=
                GEN_EXTRACT(dw1, GEN8_INST_DST_ADDR_IMM);
          } else {
-            inst->dst.base.addr_imm = GEN_EXTRACT(dw1,
-                  GEN8_INST_DST_ADDR_IMM_ALIGN16) <<
+            inst->dst.base.addr_imm |=
+               GEN_EXTRACT(dw1, GEN8_INST_DST_ADDR_IMM_ALIGN16) <<
                GEN8_INST_DST_ADDR_IMM_ALIGN16__SHR;
          }
-
-         inst->dst.base.addr_imm |= GEN_EXTRACT(dw1,
-               GEN8_INST_DST_ADDR_IMM_BIT9) <<
-            GEN8_INST_DST_ADDR_IMM_BIT9__SHR;
       } else {
          inst->dst.base.addr_subreg =
             GEN_EXTRACT(dw1, GEN6_INST_DST_ADDR_SUBREG);
@@ -351,8 +356,8 @@ disasm_inst_decode_dw1_gen6(struct disasm_inst *inst, uint32_t dw1)
             inst->dst.base.addr_imm =
                GEN_EXTRACT(dw1, GEN6_INST_DST_ADDR_IMM);
          } else {
-            inst->dst.base.addr_imm = GEN_EXTRACT(dw1,
-                  GEN6_INST_DST_ADDR_IMM_ALIGN16) <<
+            inst->dst.base.addr_imm =
+               GEN_EXTRACT(dw1, GEN6_INST_DST_ADDR_IMM_ALIGN16) <<
                GEN6_INST_DST_ADDR_IMM_ALIGN16__SHR;
          }
       }
@@ -367,6 +372,22 @@ disasm_inst_decode_dw1_gen6(struct disasm_inst *inst, uint32_t dw1)
 }
 
 static void
+disasm_inst_decode_dw1_gen6(struct disasm_inst *inst, uint32_t dw1)
+{
+   ILO_DEV_ASSERT(inst->dev, 6, 8);
+
+   if (ilo_dev_gen(inst->dev) >= ILO_GEN(8))
+      disasm_inst_decode_dw1_low_gen8(inst, dw1);
+   else
+      disasm_inst_decode_dw1_low_gen6(inst, dw1);
+
+   if (disasm_inst_jip_in_dw1_high_gen6(inst))
+      inst->u.imm32 = dw1 >> 16;
+   else
+      disasm_inst_decode_dw1_high_gen6(inst, dw1);
+}
+
+static void
 disasm_inst_decode_dw2_dw3_gen6(struct disasm_inst *inst,
                                 uint32_t dw2, uint32_t dw3)
 {