path: root/debian/patches/m68k-support.diff

--- a/common/autoconf/generated-configure.sh
+++ b/common/autoconf/generated-configure.sh
@@ -6919,6 +6919,12 @@ test -n "$target_alias" &&
       VAR_CPU_BITS=64
       VAR_CPU_ENDIAN=big
       ;;
+    m68k)
+      VAR_CPU=m68k
+      VAR_CPU_ARCH=m68k
+      VAR_CPU_BITS=32
+      VAR_CPU_ENDIAN=big
+      ;;
     *)
       as_fn_error $? "unsupported cpu $build_cpu" "$LINENO" 5
       ;;
@@ -7062,6 +7068,12 @@ $as_echo "$OPENJDK_BUILD_OS-$OPENJDK_BUI
       VAR_CPU_BITS=64
       VAR_CPU_ENDIAN=big
       ;;
+    m68k)
+      VAR_CPU=m68k
+      VAR_CPU_ARCH=m68k
+      VAR_CPU_BITS=32
+      VAR_CPU_ENDIAN=big
+      ;;
     *)
       as_fn_error $? "unsupported cpu $host_cpu" "$LINENO" 5
       ;;
--- a/common/autoconf/platform.m4
+++ b/common/autoconf/platform.m4
@@ -156,6 +156,12 @@ AC_DEFUN([PLATFORM_EXTRACT_VARS_FROM_CPU
       VAR_CPU_BITS=64
       VAR_CPU_ENDIAN=big
       ;;
+    m68k)
+      VAR_CPU=m68k
+      VAR_CPU_ARCH=m68k
+      VAR_CPU_BITS=32
+      VAR_CPU_ENDIAN=big
+      ;;
     *)
       AC_MSG_ERROR([unsupported cpu $1])
       ;;
--- a/hotspot/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp
+++ b/hotspot/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp
@@ -38,7 +38,7 @@
  * __m68k_cmpxchg
  *
  * Atomically store newval in *ptr if *ptr is equal to oldval for user space.
- * Returns newval on success and oldval if no exchange happened.
+ * Returns oldval on success and *ptr if no exchange happened.
  * This implementation is processor specific and works on
  * 68020 68030 68040 and 68060.
  *
@@ -62,40 +62,48 @@ static inline int __m68k_cmpxchg(int old
 static inline int m68k_compare_and_swap(volatile int *ptr,
                                         int oldval,
                                         int newval) {
+  int prev = *ptr;
   for (;;) {
-      int prev = *ptr;
+      int newprev;
       if (prev != oldval)
         return prev;
 
-      if (__m68k_cmpxchg (prev, newval, ptr) == newval)
+      newprev = __m68k_cmpxchg (prev, newval, ptr);
+      if (newprev == prev)
         // Success.
         return prev;
 
       // We failed even though prev == oldval.  Try again.
+      prev = newprev;
     }
 }
 
 /* Atomically add an int to memory.  */
 static inline int m68k_add_and_fetch(volatile int *ptr, int add_value) {
+  int prev = *ptr;
   for (;;) {
       // Loop until success.
+      int newprev;
 
-      int prev = *ptr;
-
-      if (__m68k_cmpxchg (prev, prev + add_value, ptr) == prev + add_value)
+      newprev = __m68k_cmpxchg (prev, prev + add_value, ptr);
+      if (newprev == prev)
         return prev + add_value;
+      prev = newprev;
     }
 }
 
 /* Atomically write VALUE into `*PTR' and returns the previous
    contents of `*PTR'.  */
 static inline int m68k_lock_test_and_set(volatile int *ptr, int newval) {
+  int prev = *ptr;
   for (;;) {
       // Loop until success.
-      int prev = *ptr;
+      int newprev;
 
-      if (__m68k_cmpxchg (prev, newval, ptr) == prev)
+      newprev = __m68k_cmpxchg (prev, newval, ptr);
+      if (newprev == prev)
         return prev;
+      prev = newprev;
     }
 }
 #endif // M68K
--- a/hotspot/src/share/vm/memory/allocation.hpp
+++ b/hotspot/src/share/vm/memory/allocation.hpp
@@ -191,7 +191,7 @@ template <MEMFLAGS F> class CHeapObj ALL
                                throw();
   void  operator delete(void* p);
   void  operator delete [] (void* p);
-};
+} __attribute__ ((aligned (4)));
 
 // Base class for objects allocated on the stack only.
 // Calling new or delete will result in fatal error.
@@ -205,7 +205,7 @@ class StackObj ALLOCATION_SUPER_CLASS_SP
 #endif
   void  operator delete(void* p);
   void  operator delete [](void* p);
-};
+} __attribute__ ((aligned (4)));
 
 // Base class for objects used as value objects.
 // Calling new or delete will result in fatal error.
@@ -231,7 +231,7 @@ class _ValueObj {
   void  operator delete(void* p);
   void* operator new [](size_t size) throw();
   void  operator delete [](void* p);
-};
+} __attribute__ ((aligned (4)));
 
 
 // Base class for objects stored in Metaspace.
@@ -611,7 +611,7 @@ class ResourceObj ALLOCATION_SUPER_CLASS
 
   void  operator delete(void* p);
   void  operator delete [](void* p);
-};
+} __attribute__ ((aligned (4)));
 
 // One of the following macros must be used when allocating an array
 // or object to determine whether it should reside in the C heap on in
--- a/hotspot/src/share/vm/oops/oop.hpp
+++ b/hotspot/src/share/vm/oops/oop.hpp
@@ -374,6 +374,6 @@ class oopDesc {
   static int mark_offset_in_bytes()    { return offset_of(oopDesc, _mark); }
   static int klass_offset_in_bytes()   { return offset_of(oopDesc, _metadata._klass); }
   static int klass_gap_offset_in_bytes();
-};
+} __attribute__ ((aligned (4)));
 
 #endif // SHARE_VM_OOPS_OOP_HPP
--- a/jdk/make/gensrc/GensrcX11Wrappers.gmk
+++ b/jdk/make/gensrc/GensrcX11Wrappers.gmk
@@ -57,12 +57,16 @@ else
     GENSRC_X11_VERSION := 32 64
   endif
 endif
+GENSRC_X11_VERSION_VARIANT :=
+ifeq ($(OPENJDK_TARGET_OS)-$(OPENJDK_TARGET_CPU), linux-m68k)
+  GENSRC_X11_VERSION_VARIANT := -linux-m68k
+endif
 
 GENSRC_X11_SIZES_USED := $(addprefix $(GENSRC_X11WRAPPERS_TMP)/sizes., $(GENSRC_X11_VERSION))
 
 # Copy only the sizes.* files that are actually needed. WrapperGenerator picks up any it finds from the
 # file prefix it is given so those not needed need to be hidden.
-$(GENSRC_X11WRAPPERS_TMP)/sizes.%: $(GENSRC_SIZER_DIR)/sizes.%
+$(GENSRC_X11WRAPPERS_TMP)/sizes.%: $(GENSRC_SIZER_DIR)/sizes.%$(GENSRC_X11_VERSION_VARIANT)
 	$(MKDIR) -p $(@D)
 	$(RM) '$@'
 	$(SORT) $< > $@
--- a/jdk/src/solaris/bin/java_md_solinux.c
+++ b/jdk/src/solaris/bin/java_md_solinux.c
@@ -1023,12 +1023,24 @@ void SplashFreeLibrary() {
     }
 }
 
+struct call_continuation_args {
+  int (JNICALL *continuation)(void *);
+  void *args;
+};
+
+static void *call_continuation(void *_args)
+{
+  struct call_continuation_args *args = _args;
+  return (void *)args->continuation(args->args);
+}
+
 /*
  * Block current thread and continue execution in a new thread
  */
 int
 ContinueInNewThread0(int (JNICALL *continuation)(void *), jlong stack_size, void * args) {
     int rslt;
+    struct call_continuation_args ccargs = { continuation, args };
 #ifndef __solaris__
     pthread_t tid;
     pthread_attr_t attr;
@@ -1039,7 +1051,7 @@ ContinueInNewThread0(int (JNICALL *conti
       pthread_attr_setstacksize(&attr, stack_size);
     }
 
-    if (pthread_create(&tid, &attr, (void *(*)(void*))continuation, (void*)args) == 0) {
+    if (pthread_create(&tid, &attr, call_continuation, &ccargs) == 0) {
       void * tmp;
       pthread_join(tid, &tmp);
       rslt = (int)tmp;
@@ -1057,7 +1069,7 @@ ContinueInNewThread0(int (JNICALL *conti
 #else /* __solaris__ */
     thread_t tid;
     long flags = 0;
-    if (thr_create(NULL, stack_size, (void *(*)(void *))continuation, args, flags, &tid) == 0) {
+    if (thr_create(NULL, stack_size, call_continuation, &ccargs, flags, &tid) == 0) {
       void * tmp;
       thr_join(tid, NULL, &tmp);
       rslt = (int)tmp;
--- /dev/null
+++ b/jdk/src/solaris/classes/sun/awt/X11/generator/sizes.32-linux-m68k
@@ -0,0 +1,1016 @@
+long	4
+int	4
+short	2
+ptr	4
+Bool	4
+Atom	4
+Window	4
+XExtData.number	0
+XExtData.next	4
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+XIMStringConversionCallbackStruct	14
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+XkbNewKeyboardNotifyEvent.time	16
+XkbNewKeyboardNotifyEvent.xkb_type	20
+XkbNewKeyboardNotifyEvent.device	24
+XkbNewKeyboardNotifyEvent.old_device	28
+XkbNewKeyboardNotifyEvent.min_key_code	32
+XkbNewKeyboardNotifyEvent.max_key_code	36
+XkbNewKeyboardNotifyEvent.old_min_key_code	40
+XkbNewKeyboardNotifyEvent.old_max_key_code	44
+XkbNewKeyboardNotifyEvent.changed	48
+XkbNewKeyboardNotifyEvent.req_major	52
+XkbNewKeyboardNotifyEvent.req_minor	53
+XkbNewKeyboardNotifyEvent	54
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+XkbCompatMapNotifyEvent.xkb_type	20
+XkbCompatMapNotifyEvent.device	24
+XkbCompatMapNotifyEvent.changed_groups	28
+XkbCompatMapNotifyEvent.first_si	32
+XkbCompatMapNotifyEvent.num_si	36
+XkbCompatMapNotifyEvent.num_total_si	40
+XkbCompatMapNotifyEvent	44
+XIMStatusDrawCallbackStruct.type	0
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+XWindowChanges	28
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+XErrorEvent.minor_code	18
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+ScreenFormat.ext_data	0
+ScreenFormat.depth	4
+ScreenFormat.bits_per_pixel	8
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+ScreenFormat	16
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+XButtonEvent.button	52
+XButtonEvent.same_screen	56
+XButtonEvent	60
+XFontProp.name	0
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+XFontProp	8
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+XIMValuesList	6
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+XKeymapEvent	52
+XTextItem16.chars	0
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+XTextItem16	16
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+XIMPreeditDrawCallbackStruct	16
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+XkbControlsNotifyEvent.type	0
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+XkbControlsNotifyEvent.xkb_type	20
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+XkbControlsNotifyEvent.enabled_ctrls	32
+XkbControlsNotifyEvent.enabled_ctrl_changes	36
+XkbControlsNotifyEvent.num_groups	40
+XkbControlsNotifyEvent.keycode	44
+XkbControlsNotifyEvent.event_type	45
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+XkbControlsNotifyEvent.req_minor	47
+XkbControlsNotifyEvent	48
+PropMwmHints.flags	0
+PropMwmHints.functions	4
+PropMwmHints.decorations	8
+PropMwmHints.inputMode	12
+PropMwmHints.status	16
+PropMwmHints	20
+XClientMessageEvent.type	0
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+XClientMessageEvent	48
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+XAnyEvent	20
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+XkbIndicatorNotifyEvent.display	12
+XkbIndicatorNotifyEvent.time	16
+XkbIndicatorNotifyEvent.xkb_type	20
+XkbIndicatorNotifyEvent.device	24
+XkbIndicatorNotifyEvent.changed	28
+XkbIndicatorNotifyEvent.state	32
+XkbIndicatorNotifyEvent	36
+XIMPreeditStateNotifyCallbackStruct.state	0
+XIMPreeditStateNotifyCallbackStruct	4
+XkbAnyEvent.type	0
+XkbAnyEvent.serial	4
+XkbAnyEvent.send_event	8
+XkbAnyEvent.display	12
+XkbAnyEvent.time	16
+XkbAnyEvent.xkb_type	20
+XkbAnyEvent.device	24
+XkbAnyEvent	28
+XMotionEvent.type	0
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+XMotionEvent.time	28
+XMotionEvent.x	32
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+XMotionEvent.state	48
+XMotionEvent.is_hint	52
+XMotionEvent.same_screen	54
+XMotionEvent	58
+XIMHotKeyTriggers.num_hot_key	0
+XIMHotKeyTriggers.key	4
+XIMHotKeyTriggers	8
+XIMStyles.count_styles	0
+XIMStyles.supported_styles	2
+XIMStyles	6
+XkbExtensionDeviceNotifyEvent.type	0
+XkbExtensionDeviceNotifyEvent.serial	4
+XkbExtensionDeviceNotifyEvent.send_event	8
+XkbExtensionDeviceNotifyEvent.display	12
+XkbExtensionDeviceNotifyEvent.time	16
+XkbExtensionDeviceNotifyEvent.xkb_type	20
+XkbExtensionDeviceNotifyEvent.device	24
+XkbExtensionDeviceNotifyEvent.reason	28
+XkbExtensionDeviceNotifyEvent.supported	32
+XkbExtensionDeviceNotifyEvent.unsupported	36
+XkbExtensionDeviceNotifyEvent.first_btn	40
+XkbExtensionDeviceNotifyEvent.num_btns	44
+XkbExtensionDeviceNotifyEvent.leds_defined	48
+XkbExtensionDeviceNotifyEvent.led_state	52
+XkbExtensionDeviceNotifyEvent.led_class	56
+XkbExtensionDeviceNotifyEvent.led_id	60
+XkbExtensionDeviceNotifyEvent	64
+XwcTextItem.chars	0
+XwcTextItem.nchars	4
+XwcTextItem.delta	8
+XwcTextItem.font_set	12
+XwcTextItem	16
+XClassHint.res_name	0
+XClassHint.res_class	4
+XClassHint	8
+XChar2b.byte1	0
+XChar2b.byte2	1
+XChar2b	2
+XSetWindowAttributes.background_pixmap	0
+XSetWindowAttributes.background_pixel	4
+XSetWindowAttributes.border_pixmap	8
+XSetWindowAttributes.border_pixel	12
+XSetWindowAttributes.bit_gravity	16
+XSetWindowAttributes.win_gravity	20
+XSetWindowAttributes.backing_store	24
+XSetWindowAttributes.backing_planes	28
+XSetWindowAttributes.backing_pixel	32
+XSetWindowAttributes.save_under	36
+XSetWindowAttributes.event_mask	40
+XSetWindowAttributes.do_not_propagate_mask	44
+XSetWindowAttributes.override_redirect	48
+XSetWindowAttributes.colormap	52
+XSetWindowAttributes.cursor	56
+XSetWindowAttributes	60
+XRenderPictFormat.id	0
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+AwtGraphicsConfigData.monoPixmapHeight	72
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--- a/hotspot/src/share/vm/oops/constMethod.hpp
+++ b/hotspot/src/share/vm/oops/constMethod.hpp
@@ -224,6 +224,9 @@ private:
   u2                _max_locals;                 // Number of local variables used by this method
   u2                _size_of_parameters;         // size of the parameter block (receiver + arguments) in words
   u2                _orig_method_idnum;          // Original unique identification number for the method
+#ifdef __m68k__
+  u2                _padding;                    // pad the structure to a multiple of 32bit
+#endif
 
   // Constructor
   ConstMethod(int byte_code_size,