Changeset e8261bb

Timestamp:

Jun 7, 2021, 11:03:24 PM (3 years ago)

Author:

Henry Xue <y58xue@…>

Branches:

ADT, arm-eh, ast-experimental, enum, forall-pointer-decay, jacob/cs343-translation, master, new-ast-unique-expr, pthread-emulation, qualifiedEnum

Children:

53d34343

Parents:

dac16a0

Message:

Preliminary ARM exception handling support

File:

• libcfa/src/exception.c (modified) (8 diffs)

libcfa/src/exception.c

@@ -27 +27 @@
 #include "stdhdr/assert.h"
 #include "virtual.h"
-
-#if defined( __ARM_ARCH )
-#warning FIX ME: temporary hack to keep ARM build working
-#ifndef _URC_FATAL_PHASE1_ERROR
-#define _URC_FATAL_PHASE1_ERROR 3
-#endif // ! _URC_FATAL_PHASE1_ERROR
-#ifndef _URC_FATAL_PHASE2_ERROR
-#define _URC_FATAL_PHASE2_ERROR 2
-#endif // ! _URC_FATAL_PHASE2_ERROR
-#endif // __ARM_ARCH
-
 #include "lsda.h"
 
@@ -301 +290 @@
 }
 
-#if defined( __x86_64 ) || defined( __i386 )
+#if defined( __x86_64 ) || defined( __i386 ) || defined( __ARM_ARCH )
 // This is our personality routine. For every stack frame annotated with
 // ".cfi_personality 0x3,__gcfa_personality_v0" this function will be called twice when unwinding.
@@ -419 +408 @@
                                     _Unwind_GetCFA(unwind_context) + 24;
 #                               elif defined( __ARM_ARCH )
-#                                   warning FIX ME: check if anything needed for ARM
-                                    42;
+                                    _Unwind_GetCFA(unwind_context) + 40;
 #                               endif
                                 int (*matcher)(exception_t *) = *(int(**)(exception_t *))match_pos;
@@ -537 +525 @@
         // HEADER
         ".LFECFA1:\n"
+#if defined( __x86_64 ) || defined( __i386 )
         "       .globl  __gcfa_personality_v0\n"
+#else // defined( __ARM_ARCH )
+        "       .global __gcfa_personality_v0\n"
+#endif
         "       .section        .gcc_except_table,\"a\",@progbits\n"
         // TABLE HEADER (important field is the BODY length at the end)
@@ -569 +561 @@
         // No clue what this does specifically
         "       .section        .data.rel.local.CFA.ref.__gcfa_personality_v0,\"awG\",@progbits,CFA.ref.__gcfa_personality_v0,comdat\n"
+#if defined( __x86_64 ) || defined( __i386 )
         "       .align 8\n"
+#else // defined( __ARM_ARCH )
+        "       .align 3\n"
+#endif
         "       .type CFA.ref.__gcfa_personality_v0, @object\n"
         "       .size CFA.ref.__gcfa_personality_v0, 8\n"
@@ -575 +571 @@
 #if defined( __x86_64 )
         "       .quad __gcfa_personality_v0\n"
-#else // then __i386
+#elif defined( __i386 )
         "       .long __gcfa_personality_v0\n"
+#else // defined( __ARM_ARCH )
+        "       .xword __gcfa_personality_v0\n"
 #endif
 );
@@ -583 +581 @@
         // HEADER
         ".LFECFA1:\n"
+#if defined( __x86_64 ) || defined( __i386 )
         "       .globl  __gcfa_personality_v0\n"
+#else // defined( __ARM_ARCH )
+        "       .global __gcfa_personality_v0\n"
+#endif
         "       .section        .gcc_except_table,\"a\",@progbits\n"
         // TABLE HEADER (important field is the BODY length at the end)
@@ -612 +614 @@
 #pragma GCC pop_options
 
-#elif defined( __ARM_ARCH )
-_Unwind_Reason_Code __gcfa_personality_v0(
-                int version,
-                _Unwind_Action actions,
-                unsigned long long exception_class,
-                struct _Unwind_Exception * unwind_exception,
-                struct _Unwind_Context * unwind_context) {
-        return _URC_CONTINUE_UNWIND;
-}
-
-__attribute__((noinline))
-void __cfaehm_try_terminate(void (*try_block)(),
-                void (*catch_block)(int index, exception_t * except),
-                __attribute__((unused)) int (*match_block)(exception_t * except)) {
-}
 #else
         #error unsupported hardware architecture
-#endif // __x86_64 || __i386
+#endif // __x86_64 || __i386 || __ARM_ARCH