X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fx86-64-arch.c;h=6ee2690f6a09ec74504114a213b6f50e55ac8357;hb=6cb4f9ea3f4e35a5a8e75922833e14575ae92180;hp=40b068327dfd9bd9ed17c93825472a3a7afcef74;hpb=71c1aff9923ecec1b55fdc48a3a2f149e9e7da68;p=sbcl.git

diff --git a/src/runtime/x86-64-arch.c b/src/runtime/x86-64-arch.c
index 40b0683..6ee2690 100644
--- a/src/runtime/x86-64-arch.c
+++ b/src/runtime/x86-64-arch.c
@@ -132,6 +132,13 @@ arch_set_pseudo_atomic_interrupted(os_context_t *context)
     SetSymbolValue(PSEUDO_ATOMIC_INTERRUPTED, make_fixnum(1),
                    arch_os_get_current_thread());
 }
+
+void
+arch_clear_pseudo_atomic_interrupted(os_context_t *context)
+{
+    SetSymbolValue(PSEUDO_ATOMIC_INTERRUPTED, make_fixnum(0),
+                   arch_os_get_current_thread());
+}
 
 /*
  * This stuff seems to get called for TRACE and debug activity.
@@ -158,11 +165,6 @@ arch_remove_breakpoint(void *pc, unsigned int orig_inst)
 /* When single stepping, single_stepping holds the original instruction
  * PC location. */
 unsigned int *single_stepping = NULL;
-#ifdef CANNOT_GET_TO_SINGLE_STEP_FLAG
-unsigned long  single_step_save1;
-unsigned long  single_step_save2;
-unsigned long  single_step_save3;
-#endif
 
 void
 arch_do_displaced_inst(os_context_t *context, unsigned int orig_inst)
@@ -173,25 +175,11 @@ arch_do_displaced_inst(os_context_t *context, unsigned int orig_inst)
     *((char *)pc) = orig_inst & 0xff;
     *((char *)pc + 1) = (orig_inst & 0xff00) >> 8;
 
-#ifdef CANNOT_GET_TO_SINGLE_STEP_FLAG
-    /* Install helper instructions for the single step:
-     * pushf; or [esp],0x100; popf. */
-    single_step_save1 = *(pc-3);
-    single_step_save2 = *(pc-2);
-    single_step_save3 = *(pc-1);
-    *(pc-3) = 0x9c909090;
-    *(pc-2) = 0x00240c81;
-    *(pc-1) = 0x9d000001;
-#else
     *context_eflags_addr(context) |= 0x100;
-#endif
 
     single_stepping = pc;
-
-#ifdef CANNOT_GET_TO_SINGLE_STEP_FLAG
-    *os_context_pc_addr(context) = (char *)pc - 9;
-#endif
 }
+
 
 void
 sigtrap_handler(int signal, siginfo_t *info, void *void_context)
@@ -202,16 +190,8 @@ sigtrap_handler(int signal, siginfo_t *info, void *void_context)
 
     if (single_stepping && (signal==SIGTRAP))
     {
-        /* fprintf(stderr,"* single step trap %x\n", single_stepping); */
-
-#ifdef CANNOT_GET_TO_SINGLE_STEP_FLAG
-        /* Un-install single step helper instructions. */
-        *(single_stepping-3) = single_step_save1;
-        *(single_stepping-2) = single_step_save2;
-        *(single_stepping-1) = single_step_save3;
-#else
         *context_eflags_addr(context) ^= 0x100;
-#endif
+
         /* Re-install the breakpoint if possible. */
         if (*os_context_pc_addr(context) == (int)single_stepping + 1) {
             fprintf(stderr, "warning: couldn't reinstall breakpoint\n");
@@ -258,7 +238,7 @@ sigtrap_handler(int signal, siginfo_t *info, void *void_context)
          * seems to be no point in doing that, since we're just
          * going to lose(..) anyway. */
         fake_foreign_function_call(context);
-        lose("%%PRIMITIVE HALT called; the party is over.");
+        lose("%%PRIMITIVE HALT called; the party is over.\n");
 
     case trap_Error:
     case trap_Cerror: