win32-os.c: Split up handle_exception

[sbcl.git] / src / runtime / breakpoint.c

diff --git a/src/runtime/breakpoint.c b/src/runtime/breakpoint.c
index 5bbc108..638b2e8 100644 (file)
--- a/src/runtime/breakpoint.c
+++ b/src/runtime/breakpoint.c
@@ -104,7 +104,7 @@ static long compute_offset(os_context_t *context, lispobj code)
     else {
         unsigned long code_start;
         struct code *codeptr = (struct code *)native_pointer(code);
-#ifdef parisc
+#ifdef LISP_FEATURE_HPPA
         unsigned long pc = *os_context_pc_addr(context) & ~3;
 #else
         unsigned long pc = *os_context_pc_addr(context);
@@ -115,8 +115,8 @@ static long compute_offset(os_context_t *context, lispobj code)
         if (pc < code_start)
             return 0;
         else {
-            long offset = pc - code_start;
-            if (offset >= codeptr->code_size)
+            unsigned long offset = pc - code_start;
+            if (offset >= (N_WORD_BYTES * fixnum_value(codeptr->code_size)))
                 return 0;
             else
                 return make_fixnum(offset);
@@ -124,12 +124,15 @@ static long compute_offset(os_context_t *context, lispobj code)
     }
 }
 
-void handle_breakpoint(int signal, siginfo_t* info, os_context_t *context)
+void handle_breakpoint(os_context_t *context)
 {
     lispobj code, context_sap;
 
     fake_foreign_function_call(context);
 
+#ifndef LISP_FEATURE_SB_SAFEPOINT
+    unblock_gc_signals(0, 0);
+#endif
     context_sap = alloc_sap(context);
     code = find_code(context);
 
@@ -139,7 +142,7 @@ void handle_breakpoint(int signal, siginfo_t* info, os_context_t *context)
     thread_sigmask(SIG_SETMASK, os_context_sigmask_addr(context), 0);
 #endif
 
-    funcall3(SymbolFunction(HANDLE_BREAKPOINT),
+    funcall3(StaticSymbolFunction(HANDLE_BREAKPOINT),
              compute_offset(context, code),
              code,
              context_sap);
@@ -147,14 +150,16 @@ void handle_breakpoint(int signal, siginfo_t* info, os_context_t *context)
     undo_fake_foreign_function_call(context);
 }
 
-void *handle_fun_end_breakpoint(int signal, siginfo_t *info,
-                                os_context_t *context)
+void *handle_fun_end_breakpoint(os_context_t *context)
 {
     lispobj code, context_sap, lra;
     struct code *codeptr;
 
     fake_foreign_function_call(context);
 
+#ifndef LISP_FEATURE_SB_SAFEPOINT
+    unblock_gc_signals(0, 0);
+#endif
     context_sap = alloc_sap(context);
     code = find_code(context);
     codeptr = (struct code *)native_pointer(code);
@@ -165,17 +170,24 @@ void *handle_fun_end_breakpoint(int signal, siginfo_t *info,
     thread_sigmask(SIG_SETMASK, os_context_sigmask_addr(context), 0);
 #endif
 
-    funcall3(SymbolFunction(HANDLE_BREAKPOINT),
+    funcall3(StaticSymbolFunction(HANDLE_BREAKPOINT),
              compute_offset(context, code),
              code,
              context_sap);
 
     lra = codeptr->constants[REAL_LRA_SLOT];
 
+#ifdef LISP_FEATURE_PPC
+    /* PPC now passes LRA objects in reg_LRA during return.  Other
+     * platforms should as well, but haven't been fixed yet. */
+    if (codeptr->constants[KNOWN_RETURN_P_SLOT] == NIL)
+        *os_context_register_addr(context, reg_LRA) = lra;
+#else
 #ifdef reg_CODE
     if (codeptr->constants[KNOWN_RETURN_P_SLOT] == NIL)
         *os_context_register_addr(context, reg_CODE) = lra;
 #endif
+#endif
 
     undo_fake_foreign_function_call(context);
 
@@ -189,20 +201,13 @@ void *handle_fun_end_breakpoint(int signal, siginfo_t *info,
 void
 handle_single_step_trap (os_context_t *context, int kind, int register_offset)
 {
-    lispobj context_sap;
-
-    /* Allocate the SAP object while the interrupts are still
-     * disabled. */
-    context_sap = alloc_sap(context);
-
     fake_foreign_function_call(context);
 
 #ifndef LISP_FEATURE_WIN32
     thread_sigmask(SIG_SETMASK, os_context_sigmask_addr(context), 0);
 #endif
 
-    funcall3(SymbolFunction(HANDLE_SINGLE_STEP_TRAP),
-             context_sap,
+    funcall2(StaticSymbolFunction(HANDLE_SINGLE_STEP_TRAP),
              make_fixnum(kind),
              make_fixnum(register_offset));