19990502 sourceware import

1 files changed, 111 insertions, 0 deletions

diff --git a/gprof/symtab.h b/gprof/symtab.h
new file mode 100644
index 0000000000..a6a450ef1e
--- /dev/null
+++ b/gprof/symtab.h
@@ -0,0 +1,111 @@
+#ifndef symtab_h
+#define symtab_h
+
+#include "bfd.h"
+#include "gprof.h"
+
+/*
+ * For a profile to be intelligible to a human user, it is necessary
+ * to map code-addresses into source-code information.  Source-code
+ * information can be any combination of: (i) function-name, (ii)
+ * source file-name, and (iii) source line number.
+ *
+ * The symbol table is used to map addresses into source-code
+ * information.
+ */
+
+#include "source.h"
+
+#define NBBS 10
+
+/*
+ * Symbol-entry.  For each external in the specified file we gather
+ * its address, the number of calls and compute its share of cpu time.
+ */
+typedef struct sym
+  {
+    /*
+     * Common information:
+     *
+     * In the symbol-table, fields ADDR and FUNC_NAME are guaranteed
+     * to contain valid information.  FILE may be 0, if unknown and
+     * LINE_NUM maybe 0 if unknown.
+     */
+    bfd_vma addr;		/* address of entry point */
+    bfd_vma end_addr;		/* end-address */
+    const char *name;		/* name of function this sym is from */
+    Source_File *file;		/* source file symbol comes from */
+    int line_num;		/* source line number */
+    unsigned int is_func:1,	/* is this a function entry point? */
+      is_static:1,		/* is this a local (static) symbol? */
+      is_bb_head:1,		/* is this the head of a basic-blk? */
+      mapped:1,			/* this symbol was mapped to another name */
+      has_been_placed:1;	/* have we placed this symbol?  */
+    unsigned long ncalls;	/* how many times executed */
+    int nuses;			/* how many times this symbol appears in
+				   a particular context */
+    bfd_vma bb_addr[NBBS];	/* address of basic-block start */
+    unsigned long bb_calls[NBBS]; /* how many times basic-block was called */
+    struct sym *next;		/* for building chains of syms */
+    struct sym *prev;		/* for building chains of syms */
+
+    /* profile-specific information: */
+
+    /* histogram specific info: */
+    struct
+      {
+	double time;		/* (weighted) ticks in this routine */
+	bfd_vma scaled_addr;	/* scaled entry point */
+      }
+    hist;
+
+    /* call-graph specific info: */
+    struct
+      {
+	unsigned long self_calls; /* how many calls to self */
+	double child_time;	/* cumulative ticks in children */
+	int index;		/* index in the graph list */
+	int top_order;		/* graph call chain top-sort order */
+	bool print_flag;	/* should this be printed? */
+	struct
+	  {
+	    double fract;	/* what % of time propagates */
+	    double self;	/* how much self time propagates */
+	    double child;	/* how much child time propagates */
+	  }
+	prop;
+	struct
+	  {
+	    int num;		/* internal number of cycle on */
+	    struct sym *head;	/* head of cycle */
+	    struct sym *next;	/* next member of cycle */
+	  }
+	cyc;
+	struct arc *parents;	/* list of caller arcs */
+	struct arc *children;	/* list of callee arcs */
+      }
+    cg;
+  }
+Sym;
+
+/*
+ * Symbol-tables are always assumed to be sorted in increasing order
+ * of addresses:
+ */
+typedef struct
+  {
+    unsigned int len;		/* # of symbols in this table */
+    Sym *base;			/* first element in symbol table */
+    Sym *limit;			/* limit = base + len */
+  }
+Sym_Table;
+
+extern Sym_Table symtab;	/* the symbol table */
+
+extern void sym_init PARAMS ((Sym * sym));
+extern void symtab_finalize PARAMS ((Sym_Table * symtab));
+extern Sym *sym_lookup PARAMS ((Sym_Table * symtab, bfd_vma address));
+
+extern void find_call PARAMS ((Sym *, bfd_vma, bfd_vma));
+
+#endif /* symtab_h */