* inftarg.c (child_thread_alive): New function to see if a

[deliverable/binutils-gdb.git] / gdb / symtab.h

diff --git a/gdb/symtab.h b/gdb/symtab.h
index d7f62a87d654c3da714649f0aa970ba8ec443aa2..cd1ad34ee2e686976fb77f4c2d644b40963f5d97 100644 (file)
--- a/gdb/symtab.h
+++ b/gdb/symtab.h
@@ -1,5 +1,5 @@
 /* Symbol table definitions for GDB.
-   Copyright (C) 1986, 1989, 1991, 1992 Free Software Foundation, Inc.
+   Copyright 1986, 1989, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
 
 This file is part of GDB.
 
@@ -26,8 +26,12 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define obstack_chunk_alloc xmalloc
 #define obstack_chunk_free free
 
-/* GNU C supports enums that are bitfields.  Some old compilers don't. */
-#if defined(__GNUC__) && !defined(BYTE_BITFIELD)
+/* Don't do this; it means that if some .o's are compiled with GNU C
+   and some are not (easy to do accidentally the way we configure
+   things; also it is a pain to have to "make clean" every time you
+   want to switch compilers), then GDB dies a horrible death.  */
+/* GNU C supports enums that are bitfields.  Some compilers don't. */
+#if 0 && defined(__GNUC__) && !defined(BYTE_BITFIELD)
 #define        BYTE_BITFIELD   :8;
 #else
 #define        BYTE_BITFIELD   /*nothing*/
@@ -57,7 +61,10 @@ struct general_symbol_info
 
   union
     {
-      long value;
+      /* The fact that this is a long not a LONGEST mainly limits the
+        range of a LOC_CONST.  Since LOC_CONST_BYTES exists, I'm not
+        sure that is a big deal.  */
+      long ivalue;
 
       struct block *block;
 
@@ -99,11 +106,11 @@ struct general_symbol_info
      expect all symbol-reading code to set it correctly (the ELF code
      also tries to set it correctly).  */
 
-  unsigned short section;
+  short section;
 };
 
 #define SYMBOL_NAME(symbol)            (symbol)->ginfo.name
-#define SYMBOL_VALUE(symbol)           (symbol)->ginfo.value.value
+#define SYMBOL_VALUE(symbol)           (symbol)->ginfo.value.ivalue
 #define SYMBOL_VALUE_ADDRESS(symbol)   (symbol)->ginfo.value.address
 #define SYMBOL_VALUE_BYTES(symbol)     (symbol)->ginfo.value.bytes
 #define SYMBOL_BLOCK_VALUE(symbol)     (symbol)->ginfo.value.block
@@ -299,6 +306,15 @@ struct minimal_symbol
       mst_data,                        /* Generally initialized data */
       mst_bss,                 /* Generally uninitialized data */
       mst_abs,                 /* Generally absolute (nonrelocatable) */
+      /* GDB uses mst_solib_trampoline for the start address of a shared
+        library trampoline entry.  Breakpoints for shared library functions
+        are put there if the shared library is not yet loaded.
+        After the shared library is loaded, lookup_minimal_symbol will
+        prefer the minimal symbol from the shared library (usually
+        a mst_text symbol) over the mst_solib_trampoline symbol, and the
+        breakpoints will be moved to their true address in the shared
+        library via breakpoint_re_set.  */
+      mst_solib_trampoline,    /* Shared library trampoline code */
       /* For the mst_file* types, the names are only guaranteed to be unique
         within a given .o file.  */
       mst_file_text,           /* Static version of mst_text */
@@ -1016,6 +1032,12 @@ lookup_minimal_symbol PARAMS ((const char *, struct objfile *));
 extern struct minimal_symbol *
 lookup_minimal_symbol_by_pc PARAMS ((CORE_ADDR));
 
+extern struct minimal_symbol *
+lookup_solib_trampoline_symbol_by_pc PARAMS ((CORE_ADDR));
+
+extern CORE_ADDR
+find_solib_trampoline_target PARAMS ((CORE_ADDR));
+
 extern void
 init_minimal_symbol_collection PARAMS ((void));
 
@@ -1050,6 +1072,13 @@ struct symtabs_and_lines
 extern struct symtab_and_line
 find_pc_line PARAMS ((CORE_ADDR, int));
 
+/* Given an address, return the nearest symbol at or below it in memory.
+   Optionally return the symtab it's from through 2nd arg, and the
+   address in inferior memory of the symbol through 3rd arg.  */
+
+extern struct symbol *
+find_addr_symbol PARAMS ((CORE_ADDR, struct symtab **, CORE_ADDR *));
+
 /* Given a symtab and line number, return the pc there.  */
 
 extern CORE_ADDR
@@ -1090,6 +1119,9 @@ maintenance_print_msymbols PARAMS ((char *, int));
 void
 maintenance_print_objfiles PARAMS ((char *, int));
 
+void
+maintenance_check_symtabs PARAMS ((char *, int));
+
 #endif
 
 extern void