midipix targets: added target-provided unwind interfaces and exception filter.

2 files changed, 114 insertions, 0 deletions

diff --git a/gcc/unwind-midipix.c b/gcc/unwind-midipix.c
new file mode 100644
index 000000000..61907e176
--- /dev/null
+++ b/gcc/unwind-midipix.c
@@ -0,0 +1,36 @@
+/*****************************************************************************/
+/*                                                                           */
+/*  midipix unwind functionality                                             */
+/*                                                                           */
+/*  Copyright (C)  2019  Z. Gilboa                                           */
+/*                                                                           */
+/*  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 3 of the License, 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, see <http://www.gnu.org/licenses/>.     */
+/*                                                                           */
+/*****************************************************************************/
+
+#define TARGET_PERSONALITY_FUNCTION
+
+#include "unwind-midipix.h"
+#include "unwind-c.c"
+
+int __gcc_personality_seh0(
+	struct _nt_exception_record * erec,
+	void * this_frame,
+	mcontext_t * tctx,
+	struct _nt_dispatcher_context * dctx)
+{
+	return __unwind_exception_filter(
+		erec,this_frame,tctx,dctx,
+		__gcc_personality_imp);
+}
diff --git a/gcc/unwind-midipix.h b/gcc/unwind-midipix.h
new file mode 100644
index 000000000..e27ab617a
--- /dev/null
+++ b/gcc/unwind-midipix.h
@@ -0,0 +1,78 @@
+#ifndef _UNWIND_H
+#define _UNWIND_H
+
+#include <stdint.h>
+#include <sys/unwind.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef long                                    _sleb128_t;
+typedef unsigned long                           _uleb128_t;
+
+typedef uintptr_t                               _Unwind_Word;
+typedef intptr_t                                _Unwind_Sword;
+
+typedef uintptr_t                               _Unwind_Ptr;
+typedef uintptr_t                               _Unwind_Internal_Ptr;
+typedef uintptr_t                               _Unwind_Exception_Class;
+
+typedef int                                     _Unwind_Action;
+typedef enum __unwind_reason_code               _Unwind_Reason_Code;
+
+typedef __unwind_personality_routine            _Unwind_Personality_Fn;
+typedef __unwind_exception_cleanup_routine      _Unwind_Exception_Cleanup_Fn;
+
+
+#define _Unwind_Exception               __unwind_exception
+#define _Unwind_Context                 __unwind_context
+
+#define _URC_NO_REASON                  __URC_NO_REASON
+#define _URC_FOREIGN_EXCEPTION_CAUGHT   __URC_FOREIGN_EXCEPTION
+#define _URC_FATAL_PHASE2_ERROR         __URC_FATAL_PHASE2
+#define _URC_FATAL_PHASE1_ERROR         __URC_FATAL_PHASE1
+#define _URC_NORMAL_STOP                __URC_NORMAL_STOP
+#define _URC_END_OF_STACK               __URC_END_OF_STACK
+#define _URC_HANDLER_FOUND              __URC_HANDLER_FOUND
+#define _URC_INSTALL_CONTEXT            __URC_INSTALL_CONTEXT
+#define _URC_CONTINUE_UNWIND            __URC_CONTINUE_UNWIND
+
+#define _UA_SEARCH_PHASE                __UA_SEARCH_PHASE
+#define _UA_CLEANUP_PHASE               __UA_CLEANUP_PHASE
+#define _UA_HANDLER_FRAME               __UA_HANDLER_FRAME
+#define _UA_FORCE_UNWIND                __UA_FORCE_UNWIND
+#define _UA_END_OF_STACK                __UA_END_OF_STACK
+
+#define _Unwind_RaiseException          __unwind_raise_exception
+#define _Unwind_DeleteException         __unwind_delete_exception
+
+#define _Unwind_Resume                  __unwind_resume
+#define _Unwind_Resume_or_Rethrow       __unwind_resume_or_rethrow
+
+#define _Unwind_ForcedUnwind            __unwind_force
+#define _Unwind_GetLanguageSpecificData __unwind_get_language_specific_data
+
+#define _Unwind_Backtrace               __unwind_backtrace
+#define _Unwind_Calltrace               __unwind_calltrace
+
+#define _Unwind_GetIP                   __unwind_get_ip
+#define _Unwind_SetIP                   __unwind_set_ip
+
+#define _Unwind_GetGR                   __unwind_get_gr
+#define _Unwind_SetGR                   __unwind_set_gr
+
+#define _Unwind_GetDataRelBase          __unwind_get_data_rel_base
+#define _Unwind_GetTextRelBase          __unwind_get_text_rel_base
+
+#define _Unwind_GetCFA                  __unwind_get_cfa
+#define _Unwind_GetIPInfo               __unwind_get_ip_info
+
+#define _Unwind_GetRegionStart          __unwind_get_region_start
+#define _Unwind_FindEnclosingFunction   __unwind_find_enclosing_function
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif