(in-package "SB!VM")
-(def!constant n-word-bits 32
- "Number of bits per word where a word holds one lisp descriptor.")
+;;; number of bits per word where a word holds one lisp descriptor
+(def!constant n-word-bits 32)
-(def!constant n-byte-bits 8
- "Number of bits per byte where a byte is the smallest addressable object.")
+;;; the natural width of a machine word (as seen in e.g. register width,
+;;; address space)
+(def!constant n-machine-word-bits 32)
-(def!constant word-shift (1- (integer-length (/ n-word-bits n-byte-bits)))
- "Number of bits to shift between word addresses and byte addresses.")
-
-(def!constant n-word-bytes (/ n-word-bits n-byte-bits)
- "Number of bytes in a word.")
+;;; number of bits per byte where a byte is the smallest addressable
+;;; object
+(def!constant n-byte-bits 8)
(def!constant float-sign-shift 31)
(def!constant read-only-space-start #x01000000)
(def!constant read-only-space-end #x05000000)
-(def!constant binding-stack-start #x05000000)
-(def!constant binding-stack-end #x05800000)
-
-(def!constant control-stack-start #x05800000)
-(def!constant control-stack-end #x06000000)
-
(def!constant static-space-start #x06000000)
(def!constant static-space-end #x08000000)
*posix-argv*
- sb!impl::maybe-gc
+ sb!impl::sub-gc
sb!kernel::internal-error
sb!kernel::control-stack-exhausted-error
+ sb!kernel::undefined-alien-variable-error
+ sb!kernel::undefined-alien-function-error
sb!di::handle-breakpoint
sb!impl::fdefinition-object
*current-catch-block*
*current-unwind-protect-block*
+ *binding-stack-start*
+ *control-stack-start*
+ *control-stack-end*
+
;; Interrupt Handling
*free-interrupt-context-index*
sb!unix::*interrupts-enabled*