X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fassembly%2Fsparc%2Farith.lisp;h=d3b52d24a99ca38acce43ea753c46212af806548;hb=70c40b1892a606163d0f60ac7b20093724e8e5e5;hp=3864d7b77c40315f1951777bdcf1b4f89afeea58;hpb=68fd2d2dd6f265669a8957accd8a33e62786a97e;p=sbcl.git diff --git a/src/assembly/sparc/arith.lisp b/src/assembly/sparc/arith.lisp index 3864d7b..d3b52d2 100644 --- a/src/assembly/sparc/arith.lisp +++ b/src/assembly/sparc/arith.lisp @@ -14,21 +14,21 @@ ;;;; Addition and subtraction. (define-assembly-routine (generic-+ - (:cost 10) - (:return-style :full-call) - (:translate +) - (:policy :safe) - (:save-p t)) - ((:arg x (descriptor-reg any-reg) a0-offset) - (:arg y (descriptor-reg any-reg) a1-offset) - - (:res res (descriptor-reg any-reg) a0-offset) - - (:temp temp non-descriptor-reg nl0-offset) - (:temp temp2 non-descriptor-reg nl1-offset) - (:temp lra descriptor-reg lra-offset) - (:temp nargs any-reg nargs-offset) - (:temp ocfp any-reg ocfp-offset)) + (:cost 10) + (:return-style :full-call) + (:translate +) + (:policy :safe) + (:save-p t)) + ((:arg x (descriptor-reg any-reg) a0-offset) + (:arg y (descriptor-reg any-reg) a1-offset) + + (:res res (descriptor-reg any-reg) a0-offset) + + (:temp temp non-descriptor-reg nl0-offset) + (:temp temp2 non-descriptor-reg nl1-offset) + (:temp lra descriptor-reg lra-offset) + (:temp nargs any-reg nargs-offset) + (:temp ocfp any-reg ocfp-offset)) (inst andcc zero-tn x fixnum-tag-mask) (inst b :ne DO-STATIC-FUN) (inst andcc zero-tn y fixnum-tag-mask) @@ -38,8 +38,8 @@ (inst b :vc done) (inst nop) - (inst sra temp x fixnum-tag-bits) - (inst sra temp2 y fixnum-tag-bits) + (inst sra temp x n-fixnum-tag-bits) + (inst sra temp2 y n-fixnum-tag-bits) (inst add temp2 temp) (with-fixed-allocation (res temp bignum-widetag (1+ bignum-digits-offset)) (storew temp2 res bignum-digits-offset other-pointer-lowtag)) @@ -50,7 +50,7 @@ (inst li nargs (fixnumize 2)) (inst move ocfp cfp-tn) (inst j code-tn - (- (* simple-fun-code-offset n-word-bytes) fun-pointer-lowtag)) + (- (* simple-fun-code-offset n-word-bytes) fun-pointer-lowtag)) (inst move cfp-tn csp-tn) DONE @@ -58,21 +58,21 @@ (define-assembly-routine (generic-- - (:cost 10) - (:return-style :full-call) - (:translate -) - (:policy :safe) - (:save-p t)) - ((:arg x (descriptor-reg any-reg) a0-offset) - (:arg y (descriptor-reg any-reg) a1-offset) - - (:res res (descriptor-reg any-reg) a0-offset) - - (:temp temp non-descriptor-reg nl0-offset) - (:temp temp2 non-descriptor-reg nl1-offset) - (:temp lra descriptor-reg lra-offset) - (:temp nargs any-reg nargs-offset) - (:temp ocfp any-reg ocfp-offset)) + (:cost 10) + (:return-style :full-call) + (:translate -) + (:policy :safe) + (:save-p t)) + ((:arg x (descriptor-reg any-reg) a0-offset) + (:arg y (descriptor-reg any-reg) a1-offset) + + (:res res (descriptor-reg any-reg) a0-offset) + + (:temp temp non-descriptor-reg nl0-offset) + (:temp temp2 non-descriptor-reg nl1-offset) + (:temp lra descriptor-reg lra-offset) + (:temp nargs any-reg nargs-offset) + (:temp ocfp any-reg ocfp-offset)) (inst andcc zero-tn x fixnum-tag-mask) (inst b :ne DO-STATIC-FUN) (inst andcc zero-tn y fixnum-tag-mask) @@ -82,8 +82,8 @@ (inst b :vc done) (inst nop) - (inst sra temp x fixnum-tag-bits) - (inst sra temp2 y fixnum-tag-bits) + (inst sra temp x n-fixnum-tag-bits) + (inst sra temp2 y n-fixnum-tag-bits) (inst sub temp2 temp temp2) (with-fixed-allocation (res temp bignum-widetag (1+ bignum-digits-offset)) (storew temp2 res bignum-digits-offset other-pointer-lowtag)) @@ -94,7 +94,7 @@ (inst li nargs (fixnumize 2)) (inst move ocfp cfp-tn) (inst j code-tn - (- (* simple-fun-code-offset n-word-bytes) fun-pointer-lowtag)) + (- (* simple-fun-code-offset n-word-bytes) fun-pointer-lowtag)) (inst move cfp-tn csp-tn) DONE @@ -106,22 +106,22 @@ (define-assembly-routine (generic-* - (:cost 50) - (:return-style :full-call) - (:translate *) - (:policy :safe) - (:save-p t)) - ((:arg x (descriptor-reg any-reg) a0-offset) - (:arg y (descriptor-reg any-reg) a1-offset) - - (:res res (descriptor-reg any-reg) a0-offset) - - (:temp temp non-descriptor-reg nl0-offset) - (:temp lo non-descriptor-reg nl1-offset) - (:temp hi non-descriptor-reg nl2-offset) - (:temp lra descriptor-reg lra-offset) - (:temp nargs any-reg nargs-offset) - (:temp ocfp any-reg ocfp-offset)) + (:cost 50) + (:return-style :full-call) + (:translate *) + (:policy :safe) + (:save-p t)) + ((:arg x (descriptor-reg any-reg) a0-offset) + (:arg y (descriptor-reg any-reg) a1-offset) + + (:res res (descriptor-reg any-reg) a0-offset) + + (:temp temp non-descriptor-reg nl0-offset) + (:temp lo non-descriptor-reg nl1-offset) + (:temp hi non-descriptor-reg nl2-offset) + (:temp lra descriptor-reg lra-offset) + (:temp nargs any-reg nargs-offset) + (:temp ocfp any-reg ocfp-offset)) ;; If either arg is not a fixnum, call the static function. (inst andcc zero-tn x fixnum-tag-mask) (inst b :ne DO-STATIC-FUN) @@ -131,46 +131,36 @@ ;; Remove the tag from one arg so that the result will have the correct ;; fixnum tag. - (inst sra temp x fixnum-tag-bits) + (inst sra temp x n-fixnum-tag-bits) ;; Compute the produce temp * y and return the double-word product ;; in hi:lo. - ;; - ;; FIXME: Note that the below shebang read-time conditionals aren't - ;; actually shebang. This is because the assembly files are also - ;; built in warm-init, when #! is not a defined read-macro. This - ;; problem will actually go away when we rewrite these low-level - ;; bits and pieces to use the backend-subfeatures machinery, as we - ;; will then conditionalize at code-emission time or assembly time - ;; for the VOP and the assembly routine respectively. - CSR, - ;; 2002-02-11 - #+:sparc-64 - ;; Sign extend y to a full 64-bits. temp was already - ;; sign-extended by the sra instruction above. - (progn - (inst sra y 0) - (inst mulx hi temp y) - (inst move lo hi) - (inst srax hi 32)) - #+(and (not :sparc-64) (or :sparc-v8 :sparc-v9)) - (progn - (inst smul lo temp y) - (inst rdy hi)) - #+(and (not :sparc-64) (not (or :sparc-v8 :sparc-v9))) - (let ((MULTIPLIER-POSITIVE (gen-label))) - (inst wry temp) - (inst andcc hi zero-tn) - (inst nop) - (inst nop) - (dotimes (i 32) - (inst mulscc hi y)) - (inst mulscc hi zero-tn) - (inst cmp x) - (inst b :ge MULTIPLIER-POSITIVE) - (inst nop) - (inst sub hi y) - (emit-label MULTIPLIER-POSITIVE) - (inst rdy lo)) - + (cond + ((member :sparc-64 *backend-subfeatures*) + ;; Sign extend y to a full 64-bits. temp was already + ;; sign-extended by the sra instruction above. + (inst sra y 0) + (inst mulx hi temp y) + (inst move lo hi) + (inst srax hi 32)) + ((or (member :sparc-v8 *backend-subfeatures*) + (member :sparc-v9 *backend-subfeatures*)) + (inst smul lo temp y) + (inst rdy hi)) + (t + (let ((MULTIPLIER-POSITIVE (gen-label))) + (inst wry temp) + (inst andcc hi zero-tn) + (inst nop) + (inst nop) + (dotimes (i 32) + (inst mulscc hi y)) + (inst mulscc hi zero-tn) + (inst cmp x) + (inst b :ge MULTIPLIER-POSITIVE) + (inst nop) + (inst sub hi y) + (emit-label MULTIPLIER-POSITIVE) + (inst rdy lo)))) ;; Check to see if the result will fit in a fixnum. (I.e. the high word ;; is just 32 copies of the sign bit of the low word). (inst sra temp lo 31) @@ -178,34 +168,15 @@ (inst b :eq LOW-FITS-IN-FIXNUM) ;; Shift the double word hi:lo down two bits to get rid of the fixnum tag. (inst sll temp hi 30) - (inst srl lo fixnum-tag-bits) + (inst srl lo n-fixnum-tag-bits) (inst or lo temp) - (inst sra hi fixnum-tag-bits) - ;; Allocate a BIGNUM for the result. - #+nil - (pseudo-atomic (:extra (pad-data-block (1+ bignum-digits-offset))) - (let ((one-word (gen-label))) - (inst or res alloc-tn other-pointer-lowtag) - ;; We start out assuming that we need one word. Is that correct? - (inst sra temp lo 31) - (inst xorcc temp hi) - (inst b :eq one-word) - (inst li temp (logior (ash 1 n-widetag-bits) bignum-widetag)) - ;; Nope, we need two, so allocate the addition space. - (inst add alloc-tn (- (pad-data-block (+ 2 bignum-digits-offset)) - (pad-data-block (1+ bignum-digits-offset)))) - (inst li temp (logior (ash 2 n-widetag-bits) bignum-widetag)) - (storew hi res (1+ bignum-digits-offset) other-pointer-lowtag) - (emit-label one-word) - (storew temp res 0 other-pointer-lowtag) - (storew lo res bignum-digits-offset other-pointer-lowtag))) + (inst sra hi n-fixnum-tag-bits) ;; Always allocate 2 words for the bignum result, even if we only ;; need one. The copying GC will take care of the extra word if it ;; isn't needed. (with-fixed-allocation (res temp bignum-widetag (+ 2 bignum-digits-offset)) (let ((one-word (gen-label))) - (inst or res alloc-tn other-pointer-lowtag) ;; We start out assuming that we need one word. Is that correct? (inst sra temp lo 31) (inst xorcc temp hi) @@ -226,7 +197,7 @@ (inst li nargs (fixnumize 2)) (inst move ocfp cfp-tn) (inst j code-tn - (- (* simple-fun-code-offset n-word-bytes) fun-pointer-lowtag)) + (- (* simple-fun-code-offset n-word-bytes) fun-pointer-lowtag)) (inst move cfp-tn csp-tn) LOW-FITS-IN-FIXNUM @@ -235,38 +206,38 @@ (macrolet ((frob (name note cost type sc) `(define-assembly-routine (,name - (:note ,note) - (:cost ,cost) - (:translate *) - (:policy :fast-safe) - (:arg-types ,type ,type) - (:result-types ,type)) - ((:arg x ,sc nl0-offset) - (:arg y ,sc nl1-offset) - (:res res ,sc nl0-offset) - (:temp temp ,sc nl2-offset)) - ,@(when (eq type 'tagged-num) - `((inst sra x 2))) - #+:sparc-64 - ;; Sign extend, then multiply - (progn - (inst sra x 0) - (inst sra y 0) - (inst mulx res x y)) - #+(and (not :sparc-64) (or :sparc-v8 :sparc-v9)) - (inst smul res x y) - #+(and (not :sparc-64) (not (or :sparc-v8 :sparc-v9))) - (progn - (inst wry x) - (inst andcc temp zero-tn) - (inst nop) - (inst nop) - (dotimes (i 32) - (inst mulscc temp y)) - (inst mulscc temp zero-tn) - (inst rdy res))))) + (:note ,note) + (:cost ,cost) + (:translate *) + (:policy :fast-safe) + (:arg-types ,type ,type) + (:result-types ,type)) + ((:arg x ,sc nl0-offset) + (:arg y ,sc nl1-offset) + (:res res ,sc nl0-offset) + (:temp temp ,sc nl2-offset)) + ,@(when (eq type 'tagged-num) + `((inst sra x 2))) + (cond + ((member :sparc-64 *backend-subfeatures*) + ;; Sign extend, then multiply + (inst sra x 0) + (inst sra y 0) + (inst mulx res x y)) + ((or (member :sparc-v8 *backend-subfeatures*) + (member :sparc-v9 *backend-subfeatures*)) + (inst smul res x y)) + (t + (inst wry x) + (inst andcc temp zero-tn) + (inst nop) + (inst nop) + (dotimes (i 32) + (inst mulscc temp y)) + (inst mulscc temp zero-tn) + (inst rdy res)))))) (frob unsigned-* "unsigned *" 40 unsigned-num unsigned-reg) - (frob signed-* "unsigned *" 41 signed-num signed-reg) + (frob signed-* "signed *" 41 signed-num signed-reg) (frob fixnum-* "fixnum *" 30 tagged-num any-reg)) @@ -278,42 +249,42 @@ (inst li quo 0) (labels ((do-loop (depth) - (cond - ((zerop depth) - (inst unimp 0)) - (t - (let ((label-1 (gen-label)) - (label-2 (gen-label))) - (inst cmp divisor rem) - (inst b :geu label-1) - (inst nop) - (inst sll divisor 1) - (do-loop (1- depth)) - (inst srl divisor 1) - (inst cmp divisor rem) - (emit-label label-1) - (inst b :gtu label-2) - (inst sll quo 1) - (inst add quo (if tagged (fixnumize 1) 1)) - (inst sub rem divisor) - (emit-label label-2)))))) + (cond + ((zerop depth) + (inst unimp 0)) + (t + (let ((label-1 (gen-label)) + (label-2 (gen-label))) + (inst cmp divisor rem) + (inst b :geu label-1) + (inst nop) + (inst sll divisor 1) + (do-loop (1- depth)) + (inst srl divisor 1) + (inst cmp divisor rem) + (emit-label label-1) + (inst b :gtu label-2) + (inst sll quo 1) + (inst add quo (if tagged (fixnumize 1) 1)) + (inst sub rem divisor) + (emit-label label-2)))))) (do-loop (if tagged 30 32)))) (define-assembly-routine (positive-fixnum-truncate - (:note "unsigned fixnum truncate") - (:cost 45) - (:translate truncate) - (:policy :fast-safe) - (:arg-types positive-fixnum positive-fixnum) - (:result-types positive-fixnum positive-fixnum)) - ((:arg dividend any-reg nl0-offset) - (:arg divisor any-reg nl1-offset) - - (:res quo any-reg nl2-offset) - (:res rem any-reg nl0-offset)) + (:note "unsigned fixnum truncate") + (:cost 45) + (:translate truncate) + (:policy :fast-safe) + (:arg-types positive-fixnum positive-fixnum) + (:result-types positive-fixnum positive-fixnum)) + ((:arg dividend any-reg nl0-offset) + (:arg divisor any-reg nl1-offset) + + (:res quo any-reg nl2-offset) + (:res rem any-reg nl0-offset)) (let ((error (generate-error-code nil division-by-zero-error - dividend divisor))) + dividend divisor))) (inst cmp divisor) (inst b :eq error)) @@ -322,23 +293,23 @@ (define-assembly-routine (fixnum-truncate - (:note "fixnum truncate") - (:cost 50) - (:policy :fast-safe) - (:translate truncate) - (:arg-types tagged-num tagged-num) - (:result-types tagged-num tagged-num)) - ((:arg dividend any-reg nl0-offset) - (:arg divisor any-reg nl1-offset) - - (:res quo any-reg nl2-offset) - (:res rem any-reg nl0-offset) - - (:temp quo-sign any-reg nl5-offset) - (:temp rem-sign any-reg nargs-offset)) - + (:note "fixnum truncate") + (:cost 50) + (:policy :fast-safe) + (:translate truncate) + (:arg-types tagged-num tagged-num) + (:result-types tagged-num tagged-num)) + ((:arg dividend any-reg nl0-offset) + (:arg divisor any-reg nl1-offset) + + (:res quo any-reg nl2-offset) + (:res rem any-reg nl0-offset) + + (:temp quo-sign any-reg nl5-offset) + (:temp rem-sign any-reg nargs-offset)) + (let ((error (generate-error-code nil division-by-zero-error - dividend divisor))) + dividend divisor))) (inst cmp divisor) (inst b :eq error)) @@ -371,24 +342,24 @@ (define-assembly-routine (signed-truncate - (:note "(signed-byte 32) truncate") - (:cost 60) - (:policy :fast-safe) - (:translate truncate) - (:arg-types signed-num signed-num) - (:result-types signed-num signed-num)) - - ((:arg dividend signed-reg nl0-offset) - (:arg divisor signed-reg nl1-offset) - - (:res quo signed-reg nl2-offset) - (:res rem signed-reg nl0-offset) - - (:temp quo-sign signed-reg nl5-offset) - (:temp rem-sign signed-reg nargs-offset)) - + (:note "(signed-byte 32) truncate") + (:cost 60) + (:policy :fast-safe) + (:translate truncate) + (:arg-types signed-num signed-num) + (:result-types signed-num signed-num)) + + ((:arg dividend signed-reg nl0-offset) + (:arg divisor signed-reg nl1-offset) + + (:res quo signed-reg nl2-offset) + (:res rem signed-reg nl0-offset) + + (:temp quo-sign signed-reg nl5-offset) + (:temp rem-sign signed-reg nargs-offset)) + (let ((error (generate-error-code nil division-by-zero-error - dividend divisor))) + dividend divisor))) (inst cmp divisor) (inst b :eq error)) @@ -425,37 +396,37 @@ (macrolet ((define-cond-assem-rtn (name translate static-fn cmp) `(define-assembly-routine (,name - (:cost 10) - (:return-style :full-call) - (:policy :safe) - (:translate ,translate) - (:save-p t)) - ((:arg x (descriptor-reg any-reg) a0-offset) - (:arg y (descriptor-reg any-reg) a1-offset) - - (:res res descriptor-reg a0-offset) - - (:temp nargs any-reg nargs-offset) - (:temp ocfp any-reg ocfp-offset)) - (inst andcc zero-tn x fixnum-tag-mask) - (inst b :ne DO-STATIC-FN) - (inst andcc zero-tn y fixnum-tag-mask) - (inst b :eq DO-COMPARE) - (inst cmp x y) - - DO-STATIC-FN - (inst ld code-tn null-tn (static-fun-offset ',static-fn)) - (inst li nargs (fixnumize 2)) - (inst move ocfp cfp-tn) - (inst j code-tn - (- (* simple-fun-code-offset n-word-bytes) fun-pointer-lowtag)) - (inst move cfp-tn csp-tn) - - DO-COMPARE - (inst b ,cmp done) - (load-symbol res t) - (inst move res null-tn) - DONE))) + (:cost 10) + (:return-style :full-call) + (:policy :safe) + (:translate ,translate) + (:save-p t)) + ((:arg x (descriptor-reg any-reg) a0-offset) + (:arg y (descriptor-reg any-reg) a1-offset) + + (:res res descriptor-reg a0-offset) + + (:temp nargs any-reg nargs-offset) + (:temp ocfp any-reg ocfp-offset)) + (inst andcc zero-tn x fixnum-tag-mask) + (inst b :ne DO-STATIC-FN) + (inst andcc zero-tn y fixnum-tag-mask) + (inst b :eq DO-COMPARE) + (inst cmp x y) + + DO-STATIC-FN + (inst ld code-tn null-tn (static-fun-offset ',static-fn)) + (inst li nargs (fixnumize 2)) + (inst move ocfp cfp-tn) + (inst j code-tn + (- (* simple-fun-code-offset n-word-bytes) fun-pointer-lowtag)) + (inst move cfp-tn csp-tn) + + DO-COMPARE + (inst b ,cmp done) + (load-symbol res t) + (inst move res null-tn) + DONE))) (define-cond-assem-rtn generic-< < two-arg-< :lt) (define-cond-assem-rtn generic-<= <= two-arg-<= :le) @@ -464,19 +435,19 @@ (define-assembly-routine (generic-eql - (:cost 10) - (:return-style :full-call) - (:policy :safe) - (:translate eql) - (:save-p t)) - ((:arg x (descriptor-reg any-reg) a0-offset) - (:arg y (descriptor-reg any-reg) a1-offset) - - (:res res descriptor-reg a0-offset) - - (:temp lra descriptor-reg lra-offset) - (:temp nargs any-reg nargs-offset) - (:temp ocfp any-reg ocfp-offset)) + (:cost 10) + (:return-style :full-call) + (:policy :safe) + (:translate eql) + (:save-p t)) + ((:arg x (descriptor-reg any-reg) a0-offset) + (:arg y (descriptor-reg any-reg) a1-offset) + + (:res res descriptor-reg a0-offset) + + (:temp lra descriptor-reg lra-offset) + (:temp nargs any-reg nargs-offset) + (:temp ocfp any-reg ocfp-offset)) (inst cmp x y) (inst b :eq RETURN-T) (inst andcc zero-tn x fixnum-tag-mask) @@ -494,26 +465,26 @@ (inst li nargs (fixnumize 2)) (inst move ocfp cfp-tn) (inst j code-tn - (- (* simple-fun-code-offset n-word-bytes) fun-pointer-lowtag)) + (- (* simple-fun-code-offset n-word-bytes) fun-pointer-lowtag)) (inst move cfp-tn csp-tn) RETURN-T (load-symbol res t)) (define-assembly-routine (generic-= - (:cost 10) - (:return-style :full-call) - (:policy :safe) - (:translate =) - (:save-p t)) - ((:arg x (descriptor-reg any-reg) a0-offset) - (:arg y (descriptor-reg any-reg) a1-offset) - - (:res res descriptor-reg a0-offset) - - (:temp lra descriptor-reg lra-offset) - (:temp nargs any-reg nargs-offset) - (:temp ocfp any-reg ocfp-offset)) + (:cost 10) + (:return-style :full-call) + (:policy :safe) + (:translate =) + (:save-p t)) + ((:arg x (descriptor-reg any-reg) a0-offset) + (:arg y (descriptor-reg any-reg) a1-offset) + + (:res res descriptor-reg a0-offset) + + (:temp lra descriptor-reg lra-offset) + (:temp nargs any-reg nargs-offset) + (:temp ocfp any-reg ocfp-offset)) (inst andcc zero-tn x fixnum-tag-mask) (inst b :ne DO-STATIC-FN) (inst andcc zero-tn y fixnum-tag-mask) @@ -530,26 +501,26 @@ (inst li nargs (fixnumize 2)) (inst move ocfp cfp-tn) (inst j code-tn - (- (* simple-fun-code-offset n-word-bytes) fun-pointer-lowtag)) + (- (* simple-fun-code-offset n-word-bytes) fun-pointer-lowtag)) (inst move cfp-tn csp-tn) RETURN-T (load-symbol res t)) (define-assembly-routine (generic-/= - (:cost 10) - (:return-style :full-call) - (:policy :safe) - (:translate /=) - (:save-p t)) - ((:arg x (descriptor-reg any-reg) a0-offset) - (:arg y (descriptor-reg any-reg) a1-offset) - - (:res res descriptor-reg a0-offset) - - (:temp lra descriptor-reg lra-offset) - (:temp nargs any-reg nargs-offset) - (:temp ocfp any-reg ocfp-offset)) + (:cost 10) + (:return-style :full-call) + (:policy :safe) + (:translate /=) + (:save-p t)) + ((:arg x (descriptor-reg any-reg) a0-offset) + (:arg y (descriptor-reg any-reg) a1-offset) + + (:res res descriptor-reg a0-offset) + + (:temp lra descriptor-reg lra-offset) + (:temp nargs any-reg nargs-offset) + (:temp ocfp any-reg ocfp-offset)) (inst cmp x y) (inst b :eq RETURN-NIL) (inst andcc zero-tn x fixnum-tag-mask) @@ -562,11 +533,11 @@ (lisp-return lra :offset 2) DO-STATIC-FN - (inst ld code-tn null-tn (static-fun-offset 'two-arg-=)) + (inst ld code-tn null-tn (static-fun-offset 'two-arg-/=)) (inst li nargs (fixnumize 2)) (inst move ocfp cfp-tn) (inst j code-tn - (- (* simple-fun-code-offset n-word-bytes) fun-pointer-lowtag)) + (- (* simple-fun-code-offset n-word-bytes) fun-pointer-lowtag)) (inst move cfp-tn csp-tn) RETURN-NIL