X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fearly-assem.lisp;h=317b100981e94f0c40b4af4d06d886ac0d0384bc;hb=6e8fe793a4f3e8a3c8b67755101ee15df85d73c4;hp=62f3561cd90597443ee482a9dccd9b2821283913;hpb=c9c0e648c51317ff374851c4fcc740a15d37acae;p=sbcl.git diff --git a/src/compiler/early-assem.lisp b/src/compiler/early-assem.lisp index 62f3561..317b100 100644 --- a/src/compiler/early-assem.lisp +++ b/src/compiler/early-assem.lisp @@ -11,9 +11,6 @@ (in-package "SB!ASSEM") -(sb!int:file-comment - "$Header$") - ;;; FIXME: It might make sense to use SB!VM:BYTE-FOO values here ;;; instead of the various ASSEMBLY-UNIT-FOO things, and then define a ;;; BYTE type. One problem: BYTE is exported from the CL package, so @@ -29,26 +26,26 @@ ;;; sequence.) ;;; ASSEMBLY-UNIT-BITS -- the number of bits in the minimum assembly -;;; unit, (also refered to as a ``byte''). Hopefully, different +;;; unit, (also referred to as a ``byte''). Hopefully, different ;;; instruction sets won't require changing this. -(defconstant assembly-unit-bits 8) -(defconstant assembly-unit-mask (1- (ash 1 assembly-unit-bits))) +(def!constant assembly-unit-bits 8) +(def!constant assembly-unit-mask (1- (ash 1 assembly-unit-bits))) -(deftype assembly-unit () +(def!type assembly-unit () `(unsigned-byte ,assembly-unit-bits)) ;;; Some functions which accept assembly units can meaningfully accept ;;; signed values with the same number of bits and silently munge them ;;; into appropriate unsigned values. (This is handy behavior e.g. ;;; when assembling branch instructions on the X86.) -(deftype possibly-signed-assembly-unit () +(def!type possibly-signed-assembly-unit () `(or assembly-unit (signed-byte ,assembly-unit-bits))) ;;; the maximum alignment we can guarantee given the object format. If ;;; the loader only loads objects 8-byte aligned, we can't do any ;;; better then that ourselves. -(defconstant max-alignment 3) +(def!constant max-alignment sb!vm:n-lowtag-bits) -(deftype alignment () +(def!type alignment () `(integer 0 ,max-alignment))