X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fbreakpoint.c;h=3c99cc4146227c0974151e5fe11830bdf648375e;hb=961c6bf2eda5d492d5dbb7e275fe4e0931f7adf8;hp=34a2bdf7a9c77110b422fbd9dbf285bc6d569dcf;hpb=be9eb6c67b5f43a095c3de17bea945c309d662e4;p=sbcl.git

diff --git a/src/runtime/breakpoint.c b/src/runtime/breakpoint.c
index 34a2bdf..3c99cc4 100644
--- a/src/runtime/breakpoint.c
+++ b/src/runtime/breakpoint.c
@@ -12,18 +12,21 @@
 #include <stdio.h>
 #include <signal.h>
 
+#include "sbcl.h"
 #include "runtime.h"
 #include "os.h"
-#include "sbcl.h"
 #include "interrupt.h"
 #include "arch.h"
 #include "lispregs.h"
 #include "globals.h"
 #include "alloc.h"
 #include "breakpoint.h"
+#include "thread.h"
+#include "genesis/code.h"
+#include "genesis/fdefn.h"
 
 #define REAL_LRA_SLOT 0
-#ifndef __i386__
+#if !(defined(LISP_FEATURE_X86) || defined(LISP_FEATURE_X86_64))
 #define KNOWN_RETURN_P_SLOT 1
 #define BOGUS_LRA_CONSTANTS 2
 #else
@@ -37,22 +40,22 @@ static void *compute_pc(lispobj code_obj, int pc_offset)
 
     code = (struct code *)native_pointer(code_obj);
     return (void *)((char *)code + HeaderValue(code->header)*sizeof(lispobj)
-		    + pc_offset);
+                    + pc_offset);
 }
 
-unsigned long breakpoint_install(lispobj code_obj, int pc_offset)
+unsigned int breakpoint_install(lispobj code_obj, int pc_offset)
 {
     return arch_install_breakpoint(compute_pc(code_obj, pc_offset));
 }
 
 void breakpoint_remove(lispobj code_obj, int pc_offset,
-		       unsigned long orig_inst)
+                       unsigned int orig_inst)
 {
     arch_remove_breakpoint(compute_pc(code_obj, pc_offset), orig_inst);
 }
 
 void breakpoint_do_displaced_inst(os_context_t* context,
-				  unsigned long orig_inst)
+                                  unsigned int orig_inst)
 {
     /* on platforms with sigreturn(), we go directly back from
      * arch_do_displaced_inst() to lisp code, so we need to clean up
@@ -62,166 +65,151 @@ void breakpoint_do_displaced_inst(os_context_t* context,
      *
      * -dan 2001.08.09 */
 
-#if !(defined(hpux) || defined(irix) || defined(__i386__) || defined(alpha))
+#if (defined(LISP_FEATURE_SPARC) && defined (solaris))
     undo_fake_foreign_function_call(context);
 #endif
     arch_do_displaced_inst(context, orig_inst);
 }
 
-#ifndef __i386__
 static lispobj find_code(os_context_t *context)
 {
 #ifdef reg_CODE
     lispobj code = *os_context_register_addr(context, reg_CODE);
     lispobj header;
 
-    if (LowtagOf(code) != type_OtherPointer)
-	return NIL;
+    if (lowtag_of(code) != OTHER_POINTER_LOWTAG)
+        return NIL;
 
-    header = *(lispobj *)(code-type_OtherPointer);
+    header = *(lispobj *)(code-OTHER_POINTER_LOWTAG);
 
-    if (TypeOf(header) == type_CodeHeader)
-	return code;
+    if (widetag_of(header) == CODE_HEADER_WIDETAG)
+        return code;
     else
-	return code - HeaderValue(header)*sizeof(lispobj);
+        return code - HeaderValue(header)*sizeof(lispobj);
 #else
-    return NIL;
-#endif
-}
-#endif
+    lispobj codeptr =
+        (lispobj)component_ptr_from_pc((lispobj *)(*os_context_pc_addr(context)));
 
-#ifdef __i386__
-static lispobj find_code(os_context_t *context)
-{
-  lispobj codeptr =
-      (lispobj)component_ptr_from_pc((lispobj *)(*os_context_pc_addr(context)));
-
-  if (codeptr == 0) {
-      return NIL;
-  } else {
-      return codeptr + type_OtherPointer;
-  }
-}
+    if (codeptr == 0)
+        return NIL;
+    else
+        return codeptr + OTHER_POINTER_LOWTAG;
 #endif
+}
 
-static int compute_offset(os_context_t *context, lispobj code)
+static long compute_offset(os_context_t *context, lispobj code)
 {
     if (code == NIL)
-	return 0;
+        return 0;
     else {
-	unsigned long code_start;
-	struct code *codeptr = (struct code *)native_pointer(code);
-#ifdef parisc
-	unsigned long pc = *os_context_pc_addr(context) & ~3;
+        uword_t code_start;
+        struct code *codeptr = (struct code *)native_pointer(code);
+#ifdef LISP_FEATURE_HPPA
+        uword_t pc = *os_context_pc_addr(context) & ~3;
 #else
-	unsigned long pc = *os_context_pc_addr(context);
+        uword_t pc = *os_context_pc_addr(context);
 #endif
 
-	code_start = (unsigned long)codeptr
-	    + HeaderValue(codeptr->header)*sizeof(lispobj);
-	if (pc < code_start)
-	    return 0;
-	else {
-	    int offset = pc - code_start;
-	    if (offset >= codeptr->code_size)
-		return 0;
-	    else
-		return make_fixnum(offset);
-	}
+        code_start = (uword_t)codeptr
+            + HeaderValue(codeptr->header)*sizeof(lispobj);
+        if (pc < code_start)
+            return 0;
+        else {
+            uword_t offset = pc - code_start;
+            if (offset >= (N_WORD_BYTES * fixnum_value(codeptr->code_size)))
+                return 0;
+            else
+                return make_fixnum(offset);
+        }
     }
 }
-/* FIXME: I can see no really good reason these couldn't be merged, but haven't
- * tried.  The sigprocmask() call would work just as well on alpha as it
- * presumably does on x86   -dan 2001.08.10
- */
-#ifndef __i386__
-void handle_breakpoint(int signal, siginfo_t *info, os_context_t *context)
-{
-    lispobj code;
 
-    fake_foreign_function_call(context);
-
-    code = find_code(context);
-
-    funcall3(SymbolFunction(HANDLE_BREAKPOINT),
-	     compute_offset(context, code),
-	     code,
-	     alloc_sap(context));
-
-    undo_fake_foreign_function_call(context);
-}
-#else
-void handle_breakpoint(int signal, siginfo_t* info, os_context_t *context)
+void handle_breakpoint(os_context_t *context)
 {
-    lispobj code, context_sap = alloc_sap(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);
 
+#ifndef LISP_FEATURE_WIN32
     /* Don't disallow recursive breakpoint traps. Otherwise, we can't
      * use debugger breakpoints anywhere in here. */
-    sigprocmask(SIG_SETMASK, os_context_sigmask_addr(context), 0);
+    thread_sigmask(SIG_SETMASK, os_context_sigmask_addr(context), 0);
+#endif
 
-    funcall3(SymbolFunction(HANDLE_BREAKPOINT),
-	     compute_offset(context, code),
-	     code,
-	     context_sap);
+    funcall3(StaticSymbolFunction(HANDLE_BREAKPOINT),
+             compute_offset(context, code),
+             code,
+             context_sap);
 
     undo_fake_foreign_function_call(context);
 }
-#endif
 
-#ifndef __i386__
-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, lra;
+    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);
 
-    funcall3(SymbolFunction(HANDLE_BREAKPOINT),
-	     compute_offset(context, code),
-	     code,
-	     alloc_sap(context));
+#ifndef LISP_FEATURE_WIN32
+    /* Don't disallow recursive breakpoint traps. Otherwise, we can't
+     * use debugger breakpoints anywhere in here. */
+    thread_sigmask(SIG_SETMASK, os_context_sigmask_addr(context), 0);
+#endif
+
+    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;
-    }
+    if (codeptr->constants[KNOWN_RETURN_P_SLOT] == NIL)
+        *os_context_register_addr(context, reg_CODE) = lra;
 #endif
+#endif
+
     undo_fake_foreign_function_call(context);
-    return (void *)(lra-type_OtherPointer+sizeof(lispobj));
-}
+
+#ifdef reg_LRA
+    return (void *)(lra-OTHER_POINTER_LOWTAG+sizeof(lispobj));
 #else
-void *handle_fun_end_breakpoint(int signal, siginfo_t *info,
-				os_context_t *context)
-{
-    lispobj code, context_sap = alloc_sap(context);
-    struct code *codeptr;
+    return compute_pc(lra, fixnum_value(codeptr->constants[REAL_LRA_SLOT+1]));
+#endif
+}
 
+void
+handle_single_step_trap (os_context_t *context, int kind, int register_offset)
+{
     fake_foreign_function_call(context);
 
-    code = find_code(context);
-    codeptr = (struct code *)native_pointer(code);
-
-    /* Don't disallow recursive breakpoint traps. Otherwise, we can't
-     * use debugger breakpoints anywhere in here. */
-    sigprocmask(SIG_SETMASK, os_context_sigmask_addr(context), 0);
-
-    funcall3(SymbolFunction(HANDLE_BREAKPOINT),
-	     compute_offset(context, code),
-	     code,
-	     context_sap);
+#ifndef LISP_FEATURE_WIN32
+    thread_sigmask(SIG_SETMASK, os_context_sigmask_addr(context), 0);
+#endif
 
-    undo_fake_foreign_function_call(context);
+    funcall2(StaticSymbolFunction(HANDLE_SINGLE_STEP_TRAP),
+             make_fixnum(kind),
+             make_fixnum(register_offset));
 
-    return compute_pc(codeptr->constants[REAL_LRA_SLOT],
-		      fixnum_value(codeptr->constants[REAL_LRA_SLOT+1]));
+    undo_fake_foreign_function_call(context); /* blocks signals again */
 }
-#endif