Version abc70216

1 files changed, 125 insertions, 0 deletions

diff --git a/src/phys/place/place_base.h b/src/phys/place/place_base.h
new file mode 100644
index 00000000..c9f71e43
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+++ b/src/phys/place/place_base.h
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+/*===================================================================*/
+//  
+//     place_base.h
+//
+//        Aaron P. Hurst, 2003-2007
+//              ahurst@eecs.berkeley.edu
+//
+/*===================================================================*/
+ 
+#if !defined(PLACE_BASE_H_)
+#define PLACE_BASE_H_
+
+// --------------------------------------------------------------------
+// Data structures
+//
+// --------------------------------------------------------------------
+
+// --- a C++ bool-like type
+//typedef char bool;
+#ifndef bool
+#define bool int
+#endif
+
+#define true 1
+#define false 0
+
+
+// --- Rect - rectangle
+
+typedef struct Rect {
+  float x, y;
+  float w, h;
+} Rect;
+
+
+// --- AbstractCell - a definition of a cell type
+
+typedef struct AbstractCell {
+  char *m_label;            // string description
+  float m_width, m_height;  // dimensions
+  bool  m_pad;              // a pad (external I/O) cell?
+} AbstractCell;
+
+
+// --- ConcreteCell - a design object
+
+typedef struct ConcreteCell {
+  AbstractCell *m_parent;   // cell type
+  char         *m_label;    // string description
+  int           m_id;       // a unique ID (see below)
+  bool          m_fixed;    // position is fixed?
+  float         m_x, m_y;   // center of cell
+} ConcreteCell;
+
+
+// --- ConcreteNet - a design net
+
+typedef struct ConcreteNet {
+  int            m_id;       // a unique ID (see below)
+  int            m_numTerms; // num. of connected cells
+  ConcreteCell **m_terms;    // connected cells
+  float          m_weight;   // relative weight
+} ConcreteNet;
+
+
+// A note about IDs - the IDs are non-nonegative integers. They need not
+// be contiguous, but this is certainly a good idea, as they are stored
+// in a non-sparse array.
+// Cells and nets have separate ID spaces.
+
+// --------------------------------------------------------------------
+// Global variable prototypes
+//
+// --------------------------------------------------------------------
+
+// NOTE: None of these need to be managed externally.
+
+extern int   g_place_numCells;   // number of cells
+extern int   g_place_numNets;    // number of nets
+extern float g_place_rowHeight;  // height of placement row
+extern Rect  g_place_coreBounds; // border of placeable area
+                                 // (x,y) = corner
+extern Rect  g_place_padBounds;  // border of total die area
+                                 // (x,y) = corner
+
+extern ConcreteCell **g_place_concreteCells; // all concrete cells
+extern ConcreteNet  **g_place_concreteNets;  // all concrete nets
+
+
+// --------------------------------------------------------------------
+// Function prototypes
+//
+// --------------------------------------------------------------------
+
+void   addConcreteNet(ConcreteNet *net);
+void   addConcreteCell(ConcreteCell *cell);
+void   delConcreteNet(ConcreteNet *net);
+void   delConcreteCell(ConcreteCell *cell);
+
+void   globalPreplace(float utilization);
+void   globalPlace();
+void   globalIncremental();
+void   globalFixDensity(int numBins, float maxMovement);
+
+float  fastUnplace(ConcreteCell *cell);                    // UNIMPLEMENTED
+float  fastPlace(int numCells, ConcreteCell *cells []);    // UNIMPLEMENTED
+float  fastEstimate(int numCells, ConcreteCell *cells []); // UNIMPLEMENTED
+
+Rect   getNetBBox(const ConcreteNet *net);
+float  getNetWirelength(const ConcreteNet *net);
+float  getTotalWirelength();
+float  getCellArea(const ConcreteCell *cell);
+
+
+// comparative qsort-style functions
+int    netSortByL(const void *a, const void *b);
+int    netSortByR(const void *a, const void *b);
+int    netSortByB(const void *a, const void *b);
+int    netSortByT(const void *a, const void *b);
+int    netSortByID(const void *a, const void *b);
+int    cellSortByX(const void *a, const void *b);
+int    cellSortByY(const void *a, const void *b);
+int    cellSortByID(const void *a, const void *b);
+
+#endif