X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fx86-arch.c;h=a62d20443e19b0368d53b22d1e5b127178e8c5d3;hb=e67cc0f952040723f7d0f37ddb88fe895f4b1464;hp=e5b26a7dc5d22805b22a67d59170a25887ee6c5d;hpb=074ba0606c687dbca4afc99e8e72e6f1a4486d24;p=sbcl.git

diff --git a/src/runtime/x86-arch.c b/src/runtime/x86-arch.c
index e5b26a7..a62d204 100644
--- a/src/runtime/x86-arch.c
+++ b/src/runtime/x86-arch.c
@@ -11,11 +11,11 @@
 
 #include <stdio.h>
 
+#include "sbcl.h"
 #include "runtime.h"
 #include "globals.h"
 #include "validate.h"
 #include "os.h"
-#include "sbcl.h"
 #include "arch.h"
 #include "lispregs.h"
 #include "signal.h"
@@ -55,8 +55,10 @@ context_eflags_addr(os_context_t *context)
     return &context->uc_mcontext.gregs[16];
 #elif defined __FreeBSD__
     return &context->uc_mcontext.mc_eflags;
-#elif defined __OpenBSD__ || defined __NetBSD__
+#elif defined __OpenBSD__
     return &context->sc_eflags;
+#elif defined __NetBSD__
+    return &(context->uc_mcontext.__gregs[_REG_EFL]);
 #else
 #error unsupported OS
 #endif
@@ -83,7 +85,7 @@ void arch_skip_instruction(os_context_t *context)
 	    vlen = *(char*)(*os_context_pc_addr(context))++;
 	    /* Skip Lisp error arg data bytes. */
 	    while (vlen-- > 0) {
-		( (char*)(*os_context_pc_addr(context)) )++;
+		++*os_context_pc_addr(context);
 	    }
 	    break;
 
@@ -191,7 +193,6 @@ sigtrap_handler(int signal, siginfo_t *info, void *void_context)
     int code = info->si_code;
     os_context_t *context = (os_context_t*)void_context;
     unsigned int trap;
-    sigset_t ss;
 
     if (single_stepping && (signal==SIGTRAP))
     {
@@ -242,10 +243,7 @@ sigtrap_handler(int signal, siginfo_t *info, void *void_context)
     case trap_PendingInterrupt:
 	FSHOW((stderr, "/<trap pending interrupt>\n"));
 	arch_skip_instruction(context);
-	sigemptyset(&ss);
-	sigaddset(&ss,SIGTRAP);
-	sigprocmask(SIG_UNBLOCK,&ss,0);
-	interrupt_handle_pending(context);
+        interrupt_handle_pending(context);
 	break;
 
     case trap_Halt:
@@ -263,12 +261,12 @@ sigtrap_handler(int signal, siginfo_t *info, void *void_context)
 	break;
 
     case trap_Breakpoint:
-	(char*)(*os_context_pc_addr(context)) -= 1;
+	--*os_context_pc_addr(context);
 	handle_breakpoint(signal, info, context);
 	break;
 
     case trap_FunEndBreakpoint:
-	(char*)(*os_context_pc_addr(context)) -= 1;
+	--*os_context_pc_addr(context);
 	*os_context_pc_addr(context) =
 	    (int)handle_fun_end_breakpoint(signal, info, context);
 	break;
@@ -354,3 +352,35 @@ funcall3(lispobj function, lispobj arg0, lispobj arg1, lispobj arg2)
     args[2] = arg2;
     return call_into_lisp(function, args, 3);
 }
+
+#ifdef LISP_FEATURE_LINKAGE_TABLE
+/* FIXME: It might be cleaner to generate these from the lisp side of
+ * things.
+ */
+
+void 
+arch_write_linkage_table_jmp(char * reloc, void * fun)
+{
+    /* Make JMP to function entry. JMP offset is calculated from next
+     * instruction.
+     */
+    long offset = (char *)fun - (reloc + 5);
+    int i;
+
+    *reloc++ = 0xe9;		/* opcode for JMP rel32 */
+    for (i = 0; i < 4; i++) {
+	*reloc++ = offset & 0xff;
+	offset >>= 8;
+    }
+
+    /* write a nop for good measure. */
+    *reloc = 0x90;
+}
+
+void
+arch_write_linkage_table_ref(void * reloc, void * data)
+{
+    *(unsigned long *)reloc = (unsigned long)data;
+}
+
+#endif