0.6.8: tweaked SXHASH DEFTRANSFORMs, fixed HANDLER-BIND

[sbcl.git] / src / runtime / x86-arch.c

diff --git a/src/runtime/x86-arch.c b/src/runtime/x86-arch.c
index 406030f..aaad2a1 100644 (file)
--- a/src/runtime/x86-arch.c
+++ b/src/runtime/x86-arch.c
@@ -9,10 +9,6 @@
  * files for more information.
  */
 
-/*
- * $Header$
- */
-
 #include <stdio.h>
 
 #include "runtime.h"
@@ -148,8 +144,8 @@ arch_remove_breakpoint(void *pc, unsigned long orig_inst)
 \f
 /* When single stepping, single_stepping holds the original instruction
  * PC location. */
-unsigned int *single_stepping=NULL;
-#ifndef __linux__
+unsigned int *single_stepping = NULL;
+#ifdef CANNOT_GET_TO_SINGLE_STEP_FLAG
 unsigned int  single_step_save1;
 unsigned int  single_step_save2;
 unsigned int  single_step_save3;
@@ -164,9 +160,7 @@ arch_do_displaced_inst(os_context_t *context, unsigned long orig_inst)
     *((char *)pc) = orig_inst & 0xff;
     *((char *)pc + 1) = (orig_inst & 0xff00) >> 8;
 
-#ifdef __linux__
-    *context_eflags_addr(context) |= 0x100;
-#else
+#ifdef CANNOT_GET_TO_SINGLE_STEP_FLAG
     /* Install helper instructions for the single step:
      * pushf; or [esp],0x100; popf. */
     single_step_save1 = *(pc-3);
@@ -175,11 +169,13 @@ arch_do_displaced_inst(os_context_t *context, unsigned long orig_inst)
     *(pc-3) = 0x9c909090;
     *(pc-2) = 0x00240c81;
     *(pc-1) = 0x9d000001;
+#else
+    *context_eflags_addr(context) |= 0x100;
 #endif
 
     single_stepping = (unsigned int*)pc;
 
-#ifndef __linux__
+#ifdef CANNOT_GET_TO_SINGLE_STEP_FLAG
     *os_context_pc_addr(context) = (char *)pc - 9;
 #endif
 }
@@ -191,13 +187,11 @@ sigtrap_handler(int signal, siginfo_t *info, void *void_context)
     os_context_t *context = (os_context_t*)void_context;
     unsigned int trap;
 
-    SHOW("entering sigtrap_handler(..)"); /* REMOVEME */
-
     if (single_stepping && (signal==SIGTRAP))
     {
        /* fprintf(stderr,"* single step trap %x\n", single_stepping); */
 
-#ifndef __linux__
+#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;
@@ -221,7 +215,7 @@ sigtrap_handler(int signal, siginfo_t *info, void *void_context)
     /* This is just for info in case the monitor wants to print an
      * approximation. */
     current_control_stack_pointer =
-       (lispobj*)*os_context_sp_addr(context);
+       (lispobj *)*os_context_sp_addr(context);
 
     /* On entry %eip points just after the INT3 byte and aims at the
      * 'kind' value (eg trap_Cerror). For error-trap and Cerror-trap a
@@ -241,7 +235,6 @@ sigtrap_handler(int signal, siginfo_t *info, void *void_context)
         * here, and restore it after we do our thing, but there
         * seems to be no point in doing that, since we're just
         * going to lose(..) anyway. */
-       SHOW("in trap_Halt case of sigtrap_handler(..)"); /* REMOVEME */
        fake_foreign_function_call(context);
        lose("%%primitive halt called; the party is over.");
 
@@ -268,7 +261,6 @@ sigtrap_handler(int signal, siginfo_t *info, void *void_context)
        interrupt_handle_now(signal, info, context);
        break;
     }
-    SHOW("leaving sigtrap_handler(..)"); /* REMOVEME */
 }
 
 void