/*
* support for dynamic binding from C
+ * See the "Chapter 9: Specials" of the SBCL Internals Manual.
*/
/*
* files for more information.
*/
-/*
- * $Header$
- */
+#include <stdio.h>
+#include <stdlib.h>
-#include "runtime.h"
#include "sbcl.h"
+#include "runtime.h"
#include "globals.h"
#include "dynbind.h"
+#include "thread.h"
+#include "pseudo-atomic.h"
+#include "genesis/symbol.h"
+#include "genesis/binding.h"
+#include "genesis/static-symbols.h"
-#if defined(ibmrt) || defined(__i386__)
-#define GetBSP() ((struct binding *)SymbolValue(BINDING_STACK_POINTER))
-#define SetBSP(value) SetSymbolValue(BINDING_STACK_POINTER, (lispobj)(value))
+void bind_variable(lispobj symbol, lispobj value, void *th)
+{
+ struct binding *binding;
+ struct thread *thread=(struct thread *)th;
+ binding = (struct binding *)get_binding_stack_pointer(thread);
+ set_binding_stack_pointer(thread,binding+1);
+#ifdef LISP_FEATURE_SB_THREAD
+ {
+ struct symbol *sym=(struct symbol *)native_pointer(symbol);
+ if(!sym->tls_index) {
+ lispobj *tls_index_lock=
+ &((struct symbol *)native_pointer(TLS_INDEX_LOCK))->value;
+ FSHOW_SIGNAL((stderr, "entering dynbind tls alloc\n"));
+ set_pseudo_atomic_atomic(thread);
+ get_spinlock(tls_index_lock,(uword_t)th);
+ if(!sym->tls_index) {
+ sym->tls_index=SymbolValue(FREE_TLS_INDEX,0);
+ SetSymbolValue(FREE_TLS_INDEX, sym->tls_index+N_WORD_BYTES, 0);
+ if((sym->tls_index)>=(TLS_SIZE << WORD_SHIFT)) {
+ lose("Thread local storage exhausted.");
+ }
+ }
+ release_spinlock(tls_index_lock);
+ FSHOW_SIGNAL((stderr, "exiting dynbind tls alloc\n"));
+ clear_pseudo_atomic_atomic(thread);
+ if (get_pseudo_atomic_interrupted(thread))
+ do_pending_interrupt();
+ }
+ binding->symbol = sym->tls_index;
+ binding->value = SymbolTlValue(symbol, thread);
+ }
#else
-#define GetBSP() ((struct binding *)current_binding_stack_pointer)
-#define SetBSP(value) (current_binding_stack_pointer=(lispobj *)(value))
+ binding->symbol = symbol;
+ binding->value = SymbolTlValue(symbol, thread);
#endif
+ SetTlSymbolValue(symbol, value, thread);
+}
-void bind_variable(lispobj symbol, lispobj value)
+void
+unbind(void *th)
{
- lispobj old_value;
- struct binding *binding;
+ struct thread *thread=(struct thread *)th;
+ struct binding *binding;
+ lispobj symbol;
- old_value = SymbolValue(symbol);
- binding = GetBSP();
- SetBSP(binding+1);
+ binding = ((struct binding *)get_binding_stack_pointer(thread)) - 1;
- binding->value = old_value;
- binding->symbol = symbol;
- SetSymbolValue(symbol, value);
-}
+ /* On sb-thread, it's actually a tls-index */
+ symbol = binding->symbol;
-void unbind(void)
-{
- struct binding *binding;
- lispobj symbol;
-
- binding = GetBSP() - 1;
-
- symbol = binding->symbol;
+#ifdef LISP_FEATURE_SB_THREAD
- SetSymbolValue(symbol, binding->value);
+ ((union per_thread_data *)thread)->dynamic_values[(symbol) >> WORD_SHIFT]
+ = binding->value;
+#else
+ SetSymbolValue(symbol, binding->value, thread);
+#endif
- binding->symbol = 0;
+ binding->symbol = 0;
+ binding->value = 0;
- SetBSP(binding);
+ set_binding_stack_pointer(thread,binding);
}
-void unbind_to_here(lispobj *bsp)
+void
+unbind_to_here(lispobj *bsp,void *th)
{
+ struct thread *thread=(struct thread *)th;
struct binding *target = (struct binding *)bsp;
- struct binding *binding = GetBSP();
+ struct binding *binding = (struct binding *)get_binding_stack_pointer(thread);
lispobj symbol;
while (target < binding) {
- binding--;
-
- symbol = binding->symbol;
-
- if (symbol) {
- SetSymbolValue(symbol, binding->value);
- binding->symbol = 0;
- }
-
+ binding--;
+
+ symbol = binding->symbol;
+ if (symbol) {
+ if (symbol != UNBOUND_MARKER_WIDETAG) {
+#ifdef LISP_FEATURE_SB_THREAD
+ ((union per_thread_data *)thread)->dynamic_values[(symbol) >> WORD_SHIFT]
+ = binding->value;
+#else
+ SetSymbolValue(symbol, binding->value, thread);
+#endif
+ }
+ binding->symbol = 0;
+ binding->value = 0;
+ }
}
- SetBSP(binding);
+ set_binding_stack_pointer(thread,binding);
}