0.pre8.28

[sbcl.git] / src / runtime / x86-assem.S

diff --git a/src/runtime/x86-assem.S b/src/runtime/x86-assem.S
index cd06563..a569f24 100644 (file)
--- a/src/runtime/x86-assem.S
+++ b/src/runtime/x86-assem.S
@@ -16,7 +16,12 @@
 #define LANGUAGE_ASSEMBLY
 #include "validate.h"
 #include "sbcl.h"
-
+#include "genesis/closure.h"
+#include "genesis/fdefn.h"
+#include "genesis/static-symbols.h"
+#include "genesis/symbol.h"
+#include "genesis/thread.h"
+       
 /* Minimize conditionalization for different OS naming schemes. */
 #if defined __linux__  || defined __FreeBSD__ /* (but *not* OpenBSD) */
 #define GNAME(var) var
@@ -38,6 +43,7 @@
 
        .text
        .global GNAME(foreign_function_call_active)
+       .global GNAME(all_threads)
        
 \f
 /*
@@ -122,19 +128,38 @@ Lfp_rtn_value:
 
 \f
        .text   
+       .global GNAME(call_into_lisp_first_time)
+       .type  GNAME(call_into_lisp_first_time),@function
+               
+/* The *ALIEN-STACK* pointer is set up on the first call_into_lisp when
+ * the stack changes.  We don't worry too much about saving registers 
+ * here, because we never expect to return from the initial call to lisp 
+ * anyway */
+       
+       .align  align_16byte,0x90
+GNAME(call_into_lisp_first_time):
+       pushl   %ebp            # Save old frame pointer.
+       movl    %esp,%ebp       # Establish new frame.
+       movl    %esp,ALIEN_STACK + SYMBOL_VALUE_OFFSET
+       movl    all_threads,%eax
+       movl    THREAD_CONTROL_STACK_START_OFFSET(%eax) ,%esp
+       /* don't think too hard about what happens if we get interrupted
+       * here */
+       addl    $THREAD_CONTROL_STACK_SIZE-4,%esp
+       jmp     Lstack
+\f
+       .text   
        .global GNAME(call_into_lisp)
        .type  GNAME(call_into_lisp),@function
                
 /* The C conventions require that ebx, esi, edi, and ebp be preserved
  * across function calls. */
-/* The *ALIEN-STACK* pointer is set up on the first call_into_lisp when
- * the stack changes. */
        
        .align  align_16byte,0x90
 GNAME(call_into_lisp):
        pushl   %ebp            # Save old frame pointer.
        movl    %esp,%ebp       # Establish new frame.
-
+Lstack:
 /* Save the NPX state */
        fwait                   # Catch any pending NPX exceptions.
        subl    $108,%esp       # Make room for the NPX state.
@@ -173,15 +198,6 @@ GNAME(call_into_lisp):
        movl    %eax, GNAME(foreign_function_call_active)
 
        movl    %esp,%ebx       # remember current stack
-       cmpl    $CONTROL_STACK_START,%esp
-       jbe     ChangeToLispStack
-       cmpl    $CONTROL_STACK_END,%esp
-       jbe     OnLispStack
-ChangeToLispStack:
-       /* Setup the *alien-stack* pointer */
-       movl    %esp,ALIEN_STACK + SYMBOL_VALUE_OFFSET
-       movl    $CONTROL_STACK_END,%esp         # new stack
-OnLispStack:
        pushl   %ebx            # Save entry stack on (maybe) new stack.
 
        /* Establish Lisp args. */
@@ -262,11 +278,7 @@ GNAME(undefined_tramp):
        int3
        .byte   trap_Error
         .byte   2
-#ifdef LONG_FLOAT_WIDETAG
-        .byte   24
-#else
-        .byte   23
-#endif
+        .byte   UNDEFINED_FUN_ERROR
         .byte   sc_DescriptorReg # eax in the Descriptor-reg SC
        ret
        .size   GNAME(undefined_tramp), .-GNAME(undefined_tramp)
@@ -328,11 +340,13 @@ GNAME(do_pending_interrupt):
        ret
        .size   GNAME(do_pending_interrupt),.-GNAME(do_pending_interrupt)
 \f
-#ifdef GENCGC
+#ifdef LISP_FEATURE_GENCGC
 /* This is a fast bzero using the FPU. The first argument is the start
  * address which needs to be aligned on an 8 byte boundary, the second
  * argument is the number of bytes, which must be a nonzero multiple
  * of 8 bytes. */
+/* FIXME whether this is still faster than using the OS's bzero or
+ * equivalent, we don't know */
        .text
        .globl  GNAME(i586_bzero)
        .type   GNAME(i586_bzero),@function
@@ -659,7 +673,7 @@ GNAME(alloc_16_to_edi):
                
 
 \f
-#ifdef GENCGC
+#ifdef GENCGC_INLINE_ALLOC /* LISP_FEATURE_GENCGC */
 
 /* These routines are called from Lisp when an inline allocation 
  * overflows. Every register except the result needs to be preserved.