Merge pull request #30 from camthesaxman/arm_support

Build ARM compiler

1 files changed, 142 insertions, 0 deletions

diff --git a/gcc_arm/eh-common.h b/gcc_arm/eh-common.h
new file mode 100755
index 0000000..c0ff7e7
--- /dev/null
+++ b/gcc_arm/eh-common.h
@@ -0,0 +1,142 @@
+/* EH stuff
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+This program is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+
+/* This file contains the structures required for the language
+   independant exception handling model. Both the static compiler and
+   the runtime library share this file. */
+
+/* The runtime flag flag_new_exceptions is used to determine whether the 
+   compiler supports the new runtime typechecking mechanism or not. Under
+   the new model, runtime info is contained in the exception table, and
+   the __throw() library routine determines which handler to call based
+   on the results of a call to a matching function provided by the expcetion
+   thrower.  Otherwise the old scheme of calling any handler which matches
+   an exception range is used, and the handler is responsible for all
+   checking of runtime conditions. If the handler wasn't suppose to
+   get the exception, it performs a re-throw. */
+
+
+/* The handler_label field MUST be the first field in this structure. The 
+   __throw()  library routine expects uses __eh_stub() from except.c, which
+   simply dereferences the context pointer to get the handler.
+   The routine get_dynamic_handler_chain() also has a dependancy on
+   the location of 'dynamic_handler_chain'. If its location is changed, 
+   that routine must be modified as well. */
+
+struct eh_context
+{
+  void *handler_label;
+  void **dynamic_handler_chain;
+  /* This is language dependent part of the eh context. */
+  void *info;
+  /* This is used to remember where we threw for re-throws */
+  void *table_index;  /* address of exception table entry to rethrow from */
+};
+
+#ifndef EH_TABLE_LOOKUP
+
+typedef struct old_exception_table 
+{
+  void *start_region;
+  void *end_region;
+  void *exception_handler;
+} old_exception_table;
+
+typedef struct exception_table 
+{
+  void *start_region;
+  void *end_region;
+  void *exception_handler;
+  void *match_info;              /* runtime type info */
+} exception_table;
+
+
+/* The language identifying portion of an exception table */
+
+typedef struct exception_lang_info 
+{
+  short language;
+  short version;  
+} exception_lang_info;
+
+/* This value in the first field of the exception descriptor 
+   identifies the descriptor as the new model format. This value would never
+   be present in this location under the old model */
+
+#define NEW_EH_RUNTIME  ((void *) -2)
+
+/* Each function has an exception_descriptor which contains the
+   language info, and a table of exception ranges and handlers */
+
+typedef struct exception_descriptor 
+{
+  void *runtime_id_field;    
+  exception_lang_info lang;
+  exception_table table[1];
+} exception_descriptor;
+
+
+/* A pointer to a matching function is initialized at runtime by the 
+   specific language if run-time exceptions are supported. 
+   The function takes 3 parameters
+    1 - runtime exception that has been thrown info. (__eh_info *)
+    2 - Match info pointer from the region being considered (void *)
+    3 - exception table region is in (exception descriptor *)
+*/
+
+typedef void * (*__eh_matcher)          PROTO ((void *, void *, void *));
+
+/* This value is to be checked as a 'match all' case in the runtime field. */
+
+#define CATCH_ALL_TYPE   ((void *) -1)
+
+/* This is the runtime exception information. This forms the minimum required
+   information for an exception info pointer in an eh_context structure. */
+
+
+typedef struct __eh_info 
+{
+  __eh_matcher match_function;
+  short language;
+  short version;
+} __eh_info;
+
+/* Convienient language codes for ID the originating language. Similar
+   to the codes in dwarf2.h. */
+
+enum exception_source_language
+  {
+    EH_LANG_C89 = 0x0001,
+    EH_LANG_C = 0x0002,
+    EH_LANG_Ada83 = 0x0003,
+    EH_LANG_C_plus_plus = 0x0004,
+    EH_LANG_Cobol74 = 0x0005,
+    EH_LANG_Cobol85 = 0x0006,
+    EH_LANG_Fortran77 = 0x0007,
+    EH_LANG_Fortran90 = 0x0008,
+    EH_LANG_Pascal83 = 0x0009,
+    EH_LANG_Modula2 = 0x000a,
+    EH_LANG_Java = 0x000b,
+    EH_LANG_Mips_Assembler = 0x8001
+  };
+
+#endif  /* EH_TABLE_LOOKUP */
+
+