--- /dev/null
+#| -*-Scheme-*-
+
+$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/compiler/machines/bobcat/rules1.scm,v 1.1 1987/06/13 20:58:34 cph Exp $
+
+Copyright (c) 1987 Massachusetts Institute of Technology
+
+This material was developed by the Scheme project at the Massachusetts
+Institute of Technology, Department of Electrical Engineering and
+Computer Science. Permission to copy this software, to redistribute
+it, and to use it for any purpose is granted, subject to the following
+restrictions and understandings.
+
+1. Any copy made of this software must include this copyright notice
+in full.
+
+2. Users of this software agree to make their best efforts (a) to
+return to the MIT Scheme project any improvements or extensions that
+they make, so that these may be included in future releases; and (b)
+to inform MIT of noteworthy uses of this software.
+
+3. All materials developed as a consequence of the use of this
+software shall duly acknowledge such use, in accordance with the usual
+standards of acknowledging credit in academic research.
+
+4. MIT has made no warrantee or representation that the operation of
+this software will be error-free, and MIT is under no obligation to
+provide any services, by way of maintenance, update, or otherwise.
+
+5. In conjunction with products arising from the use of this material,
+there shall be no use of the name of the Massachusetts Institute of
+Technology nor of any adaptation thereof in any advertising,
+promotional, or sales literature without prior written consent from
+MIT in each case. |#
+
+;;;; LAP Generation Rules: Data Transfers
+
+(declare (usual-integrations))
+\f
+;;;; Transfers to Registers
+
+;;; All assignments to pseudo registers are required to delete the
+;;; dead registers BEFORE performing the assignment. This is because
+;;; the register being assigned may be PSEUDO-REGISTER=? to one of the
+;;; dead registers, and thus would be flushed if the deletions
+;;; happened after the assignment.
+
+(define-rule statement
+ (ASSIGN (REGISTER 12) (REGISTER 15))
+ (enable-frame-pointer-offset! 0)
+ '())
+
+(define-rule statement
+ (ASSIGN (REGISTER 15) (OFFSET-ADDRESS (REGISTER 15) (? n)))
+ (decrement-frame-pointer-offset! n (increment-anl 7 n)))
+
+(define-rule statement
+ (ASSIGN (REGISTER (? target)) (OFFSET-ADDRESS (REGISTER 15) (? n)))
+ (QUALIFIER (pseudo-register? target))
+ `((LEA (@AO 7 ,(* 4 n)) ,(reference-assignment-alias! target 'ADDRESS))))
+
+(define-rule statement
+ (ASSIGN (REGISTER 15) (REGISTER (? source)))
+ (disable-frame-pointer-offset!
+ `((MOVE L ,(coerce->any source) (A 7)))))
+
+(define-rule statement
+ (ASSIGN (REGISTER (? target)) (CONSTANT (? source)))
+ (QUALIFIER (pseudo-register? target))
+ `(,(load-constant source (coerce->any target))))
+
+(define-rule statement
+ (ASSIGN (REGISTER (? target)) (VARIABLE-CACHE (? name)))
+ (QUALIFIER (pseudo-register? target))
+ `((MOVE L
+ (@PCR ,(free-reference-label name))
+ ,(reference-assignment-alias! target 'DATA))))
+
+(define-rule statement
+ (ASSIGN (REGISTER (? target)) (REGISTER (? source)))
+ (QUALIFIER (pseudo-register? target))
+ (move-to-alias-register! source 'DATA target)
+ '())
+\f
+(define-rule statement
+ (ASSIGN (REGISTER (? target)) (OBJECT->ADDRESS (REGISTER (? source))))
+ (QUALIFIER (pseudo-register? target))
+ (let ((target (move-to-alias-register! source 'DATA target)))
+ `((AND L ,mask-reference ,target))))
+
+(define-rule statement
+ (ASSIGN (REGISTER (? target)) (OBJECT->TYPE (REGISTER (? source))))
+ (QUALIFIER (pseudo-register? target))
+ (let ((target (move-to-alias-register! source 'DATA target)))
+ `((RO L L (& 8) ,target))))
+
+(define-rule statement
+ (ASSIGN (REGISTER (? target)) (OFFSET (REGISTER (? address)) (? offset)))
+ (QUALIFIER (pseudo-register? target))
+ (let ((source (indirect-reference! address offset)))
+ (delete-dead-registers!)
+ ;; The fact that the target register here is a data register is a
+ ;; heuristic that works reasonably well since if the value is a
+ ;; pointer, we will probably want to dereference it, which
+ ;; requires that we first mask it.
+ `((MOVE L ,source
+ ,(register-reference (allocate-alias-register! target 'DATA))))))
+
+(define-rule statement
+ (ASSIGN (REGISTER (? target)) (POST-INCREMENT (REGISTER 15) 1))
+ (QUALIFIER (pseudo-register? target))
+ (record-pop!)
+ (delete-dead-registers!)
+ `((MOVE L (@A+ 7)
+ ,(register-reference (allocate-alias-register! target 'DATA)))))
+
+(define-rule statement
+ (ASSIGN (REGISTER (? target))
+ (CONS-POINTER (CONSTANT (? type)) (REGISTER (? datum))))
+ (QUALIFIER (pseudo-register? target))
+ (let ((target* (coerce->any target))
+ (datum (coerce->any datum)))
+ (delete-dead-registers!)
+ (if (register-expression? target*)
+ `((MOVE L ,datum ,reg:temp)
+ (MOVE B (& ,type) ,reg:temp)
+ (MOVE L ,reg:temp ,target*))
+ `((MOVE L ,datum ,target*)
+ (MOVE B (& ,type) ,target*)))))
+\f
+;;;; Transfers to Memory
+
+(define-rule statement
+ (ASSIGN (OFFSET (REGISTER (? a)) (? n))
+ (CONSTANT (? object)))
+ `(,(load-constant object (indirect-reference! a n))))
+
+(define-rule statement
+ (ASSIGN (OFFSET (REGISTER (? a)) (? n))
+ (REGISTER (? r)))
+ `((MOVE L ,(coerce->any r) ,(indirect-reference! a n))))
+
+(define-rule statement
+ (ASSIGN (OFFSET (REGISTER (? a)) (? n))
+ (POST-INCREMENT (REGISTER 15) 1))
+ (record-pop!)
+ `((MOVE L (@A+ 7) ,(indirect-reference! a n))))
+
+(define-rule statement
+ (ASSIGN (OFFSET (REGISTER (? a)) (? n))
+ (CONS-POINTER (CONSTANT (? type)) (REGISTER (? r))))
+ (let ((target (indirect-reference! a n)))
+ `((MOVE L ,(coerce->any r) ,target)
+ (MOVE B (& ,type) ,target))))
+
+(define-rule statement
+ (ASSIGN (OFFSET (REGISTER (? a0)) (? n0))
+ (OFFSET (REGISTER (? a1)) (? n1)))
+ (let ((source (indirect-reference! a1 n1)))
+ `((MOVE L ,source ,(indirect-reference! a0 n0)))))
+\f
+;;;; Consing
+
+(define-rule statement
+ (ASSIGN (POST-INCREMENT (REGISTER 13) 1) (CONSTANT (? object)))
+ `(,(load-constant object '(@A+ 5))))
+
+(define-rule statement
+ (ASSIGN (POST-INCREMENT (REGISTER 13) 1) (UNASSIGNED))
+ `(,(load-non-pointer type-code:unassigned 0 '(@A+ 5))))
+
+(define-rule statement
+ (ASSIGN (POST-INCREMENT (REGISTER 13) 1) (REGISTER (? r)))
+ `((MOVE L ,(coerce->any r) (@A+ 5))))
+
+(define-rule statement
+ (ASSIGN (POST-INCREMENT (REGISTER 13) 1) (OFFSET (REGISTER (? r)) (? n)))
+ `((MOVE L ,(indirect-reference! r n) (@A+ 5))))
+
+(define-rule statement
+ (ASSIGN (POST-INCREMENT (REGISTER 13) 1) (ENTRY:PROCEDURE (? label)))
+ (let ((temporary
+ (register-reference (allocate-temporary-register! 'ADDRESS))))
+ `((LEA (@PCR ,(procedure-external-label (label->procedure label)))
+ ,temporary)
+ (MOVE L ,temporary (@A+ 5))
+ (MOVE B (& ,type-code:return-address) (@AO 5 -4)))))
+\f
+;;;; Pushes
+
+(define-rule statement
+ (ASSIGN (PRE-INCREMENT (REGISTER 15) -1) (CONSTANT (? object)))
+ (record-push!
+ `(,(load-constant object '(@-A 7)))))
+
+(define-rule statement
+ (ASSIGN (PRE-INCREMENT (REGISTER 15) -1) (UNASSIGNED))
+ (record-push!
+ `(,(load-non-pointer type-code:unassigned 0 '(@-A 7)))))
+
+(define-rule statement
+ (ASSIGN (PRE-INCREMENT (REGISTER 15) -1) (REGISTER (? r)))
+ (record-push!
+ (if (= r regnum:frame-pointer)
+ `((PEA ,(offset-reference regnum:stack-pointer (frame-pointer-offset)))
+ (MOVE B (& ,type-code:stack-environment) (@A 7)))
+ `((MOVE L ,(coerce->any r) (@-A 7))))))
+
+(define-rule statement
+ (ASSIGN (PRE-INCREMENT (REGISTER 15) -1)
+ (CONS-POINTER (CONSTANT (? type)) (REGISTER (? r))))
+ (record-push!
+ `((MOVE L ,(coerce->any r) (@-A 7))
+ (MOVE B (& ,type) (@A 7)))))
+
+(define-rule statement
+ (ASSIGN (PRE-INCREMENT (REGISTER 15) -1) (OFFSET (REGISTER (? r)) (? n)))
+ (record-push!
+ `((MOVE L ,(indirect-reference! r n) (@-A 7)))))
+
+(define-rule statement
+ (ASSIGN (PRE-INCREMENT (REGISTER 15) -1)
+ (OFFSET-ADDRESS (REGISTER 12) (? n)))
+ (record-push!
+ `((PEA ,(offset-reference regnum:stack-pointer
+ (+ n (frame-pointer-offset))))
+ (MOVE B (& ,type-code:stack-environment) (@A 7)))))
+
+(define-rule statement
+ (ASSIGN (PRE-INCREMENT (REGISTER 15) -1) (ENTRY:CONTINUATION (? label)))
+ (record-continuation-frame-pointer-offset! label)
+ (record-push!
+ `((PEA (@PCR ,label))
+ (MOVE B (& ,type-code:return-address) (@A 7)))))
\ No newline at end of file
--- /dev/null
+#| -*-Scheme-*-
+
+$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/compiler/machines/bobcat/rules2.scm,v 1.1 1987/06/13 20:58:48 cph Exp $
+
+Copyright (c) 1987 Massachusetts Institute of Technology
+
+This material was developed by the Scheme project at the Massachusetts
+Institute of Technology, Department of Electrical Engineering and
+Computer Science. Permission to copy this software, to redistribute
+it, and to use it for any purpose is granted, subject to the following
+restrictions and understandings.
+
+1. Any copy made of this software must include this copyright notice
+in full.
+
+2. Users of this software agree to make their best efforts (a) to
+return to the MIT Scheme project any improvements or extensions that
+they make, so that these may be included in future releases; and (b)
+to inform MIT of noteworthy uses of this software.
+
+3. All materials developed as a consequence of the use of this
+software shall duly acknowledge such use, in accordance with the usual
+standards of acknowledging credit in academic research.
+
+4. MIT has made no warrantee or representation that the operation of
+this software will be error-free, and MIT is under no obligation to
+provide any services, by way of maintenance, update, or otherwise.
+
+5. In conjunction with products arising from the use of this material,
+there shall be no use of the name of the Massachusetts Institute of
+Technology nor of any adaptation thereof in any advertising,
+promotional, or sales literature without prior written consent from
+MIT in each case. |#
+
+;;;; LAP Generation Rules: Predicates
+
+(declare (usual-integrations))
+\f
+;;;; Predicates
+
+(define-rule predicate
+ (TRUE-TEST (REGISTER (? register)))
+ (set-standard-branches! 'NE)
+ `(,(test-non-pointer (ucode-type false) 0 (coerce->any register))))
+
+(define-rule predicate
+ (TRUE-TEST (OFFSET (REGISTER (? register)) (? offset)))
+ (set-standard-branches! 'NE)
+ `(,(test-non-pointer (ucode-type false) 0
+ (indirect-reference! register offset))))
+
+(define-rule predicate
+ (TYPE-TEST (REGISTER (? register)) (? type))
+ (QUALIFIER (pseudo-register? register))
+ (set-standard-branches! 'EQ)
+ `(,(test-byte type
+ (register-reference (load-alias-register! register 'DATA)))))
+
+(define-rule predicate
+ (TYPE-TEST (OBJECT->TYPE (REGISTER (? register))) (? type))
+ (QUALIFIER (pseudo-register? register))
+ (set-standard-branches! 'EQ)
+ (let ((reference (move-to-temporary-register! register 'DATA)))
+ `((RO L L (& 8) ,reference)
+ ,(test-byte type reference))))
+
+(define-rule predicate
+ (UNASSIGNED-TEST (REGISTER (? register)))
+ (set-standard-branches! 'EQ)
+ `(,(test-non-pointer (ucode-type unassigned) 0 (coerce->any register))))
+
+(define-rule predicate
+ (UNASSIGNED-TEST (OFFSET (REGISTER (? register)) (? offset)))
+ (set-standard-branches! 'EQ)
+ `(,(test-non-pointer (ucode-type unassigned) 0
+ (indirect-reference! register offset))))
+\f
+(define (eq-test/constant*register constant register)
+ (set-standard-branches! 'EQ)
+ (if (non-pointer-object? constant)
+ `(,(test-non-pointer (primitive-type constant)
+ (primitive-datum constant)
+ (coerce->any register)))
+ `((CMP L
+ (@PCR ,(constant->label constant))
+ ,(coerce->machine-register register)))))
+
+(define (eq-test/constant*memory constant memory-reference)
+ (set-standard-branches! 'EQ)
+ (if (non-pointer-object? constant)
+ `(,(test-non-pointer (primitive-type constant)
+ (primitive-datum constant)
+ memory-reference))
+ (let ((temp (reference-temporary-register! false)))
+ `((MOVE L ,memory-reference ,temp)
+ (CMP L (@PCR ,(constant->label constant)) ,temp)))))
+
+(define (eq-test/register*register register-1 register-2)
+ (set-standard-branches! 'EQ)
+ (let ((finish
+ (lambda (register-1 register-2)
+ `((CMP L
+ ,(coerce->any register-2)
+ ,(coerce->machine-register register-1))))))
+ (if (or (and (not (register-has-alias? register-1 'DATA))
+ (register-has-alias? register-2 'DATA))
+ (and (not (register-has-alias? register-1 'ADDRESS))
+ (register-has-alias? register-2 'ADDRESS)))
+ (finish register-2 register-1)
+ (finish register-1 register-2))))
+
+(define (eq-test/register*memory register memory-reference)
+ (set-standard-branches! 'EQ)
+ `((CMP L ,memory-reference ,(coerce->machine-register register))))
+
+(define (eq-test/memory*memory register-1 offset-1 register-2 offset-2)
+ (set-standard-branches! 'EQ)
+ (let ((temp (reference-temporary-register! false)))
+ (let ((finish
+ (lambda (register-1 offset-1 register-2 offset-2)
+ `((MOVE L ,(indirect-reference! register-1 offset-1) ,temp)
+ (CMP L ,(indirect-reference! register-2 offset-2) ,temp)))))
+ (if (or (and (not (register-has-alias? register-1 'ADDRESS))
+ (register-has-alias? register-2 'ADDRESS))
+ (and (not (register-has-alias? register-1 'DATA))
+ (register-has-alias? register-2 'DATA)))
+ (finish register-2 offset-2 register-1 offset-1)
+ (finish register-1 offset-1 register-2 offset-2)))))
+\f
+(define-rule predicate
+ (EQ-TEST (REGISTER (? register)) (CONSTANT (? constant)))
+ (eq-test/constant*register constant register))
+
+(define-rule predicate
+ (EQ-TEST (CONSTANT (? constant)) (REGISTER (? register)))
+ (eq-test/constant*register constant register))
+
+(define-rule predicate
+ (EQ-TEST (OFFSET (REGISTER (? register)) (? offset)) (CONSTANT (? constant)))
+ (eq-test/constant*memory constant (indirect-reference! register offset)))
+
+(define-rule predicate
+ (EQ-TEST (CONSTANT (? constant)) (OFFSET (REGISTER (? register)) (? offset)))
+ (eq-test/constant*memory constant (indirect-reference! register offset)))
+
+(define-rule predicate
+ (EQ-TEST (CONSTANT (? constant)) (POST-INCREMENT (REGISTER 15) 1))
+ (eq-test/constant*memory constant '(@A+ 7)))
+
+(define-rule predicate
+ (EQ-TEST (POST-INCREMENT (REGISTER 15) 1) (CONSTANT (? constant)))
+ (eq-test/constant*memory constant '(@A+ 7)))
+
+(define-rule predicate
+ (EQ-TEST (REGISTER (? register-1)) (REGISTER (? register-2)))
+ (eq-test/register*register register-1 register-2))
+
+(define-rule predicate
+ (EQ-TEST (OFFSET (REGISTER (? register-1)) (? offset-1))
+ (REGISTER (? register-2)))
+ (eq-test/register*memory register-2
+ (indirect-reference! register-1 offset-1)))
+
+(define-rule predicate
+ (EQ-TEST (REGISTER (? register-1))
+ (OFFSET (REGISTER (? register-2)) (? offset-2)))
+ (eq-test/register*memory register-1
+ (indirect-reference! register-2 offset-2)))
+
+(define-rule predicate
+ (EQ-TEST (POST-INCREMENT (REGISTER 15) 1) (REGISTER (? register)))
+ (record-pop!)
+ (eq-test/register*memory register '(@A+ 7)))
+
+(define-rule predicate
+ (EQ-TEST (REGISTER (? register)) (POST-INCREMENT (REGISTER 15) 1))
+ (record-pop!)
+ (eq-test/register*memory register '(@A+ 7)))
+
+(define-rule predicate
+ (EQ-TEST (OFFSET (REGISTER (? register-1)) (? offset-1))
+ (OFFSET (REGISTER (? register-2)) (? offset-2)))
+ (eq-test/memory*memory register-1 offset-1 register-2 offset-2))
\ No newline at end of file
--- /dev/null
+#| -*-Scheme-*-
+
+$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/compiler/machines/bobcat/rules3.scm,v 1.1 1987/06/13 20:59:04 cph Exp $
+
+Copyright (c) 1987 Massachusetts Institute of Technology
+
+This material was developed by the Scheme project at the Massachusetts
+Institute of Technology, Department of Electrical Engineering and
+Computer Science. Permission to copy this software, to redistribute
+it, and to use it for any purpose is granted, subject to the following
+restrictions and understandings.
+
+1. Any copy made of this software must include this copyright notice
+in full.
+
+2. Users of this software agree to make their best efforts (a) to
+return to the MIT Scheme project any improvements or extensions that
+they make, so that these may be included in future releases; and (b)
+to inform MIT of noteworthy uses of this software.
+
+3. All materials developed as a consequence of the use of this
+software shall duly acknowledge such use, in accordance with the usual
+standards of acknowledging credit in academic research.
+
+4. MIT has made no warrantee or representation that the operation of
+this software will be error-free, and MIT is under no obligation to
+provide any services, by way of maintenance, update, or otherwise.
+
+5. In conjunction with products arising from the use of this material,
+there shall be no use of the name of the Massachusetts Institute of
+Technology nor of any adaptation thereof in any advertising,
+promotional, or sales literature without prior written consent from
+MIT in each case. |#
+
+;;;; LAP Generation Rules: Invocations and Entries
+
+(declare (usual-integrations))
+\f
+;;;; Invocations
+
+(define-rule statement
+ (INVOCATION:APPLY (? number-pushed) (? prefix) (? continuation))
+ (disable-frame-pointer-offset!
+ `(,@(generate-invocation-prefix prefix '())
+ ,(load-dnw number-pushed 0)
+ (JMP ,entry:compiler-apply))))
+
+(define-rule statement
+ (INVOCATION:JUMP (? n)
+ (APPLY-CLOSURE (? frame-size) (? receiver-offset))
+ (? continuation) (? label))
+ (disable-frame-pointer-offset!
+ `(,@(clear-map!)
+ ,@(apply-closure-sequence frame-size receiver-offset label))))
+
+(define-rule statement
+ (INVOCATION:JUMP (? n)
+ (APPLY-STACK (? frame-size) (? receiver-offset)
+ (? n-levels))
+ (? continuation) (? label))
+ (disable-frame-pointer-offset!
+ `(,@(clear-map!)
+ ,@(apply-stack-sequence frame-size receiver-offset n-levels label))))
+
+(define-rule statement
+ (INVOCATION:JUMP (? number-pushed) (? prefix) (? continuation) (? label))
+ (QUALIFIER (not (memq (car prefix) '(APPLY-CLOSURE APPLY-STACK))))
+ (disable-frame-pointer-offset!
+ `(,@(generate-invocation-prefix prefix '())
+ (BRA L (@PCR ,label)))))
+
+(define-rule statement
+ (INVOCATION:LEXPR (? number-pushed) (? prefix) (? continuation)
+ (? label))
+ (disable-frame-pointer-offset!
+ `(,@(generate-invocation-prefix prefix '())
+ ,(load-dnw number-pushed 0)
+ (BRA L (@PCR ,label)))))
+\f
+(define-rule statement
+ (INVOCATION:CACHE-REFERENCE (? frame-size) (? prefix) (? continuation)
+ (? extension))
+ (disable-frame-pointer-offset!
+ (let ((set-extension (expression->machine-register! extension a3)))
+ (delete-dead-registers!)
+ `(,@set-extension
+ ,@(generate-invocation-prefix prefix (list a3))
+ ,(load-dnw frame-size 0)
+ (LEA (@PCR ,*block-start-label*) (A 1))
+ (JMP ,entry:compiler-cache-reference-apply)))))
+
+(define-rule statement
+ (INVOCATION:LOOKUP (? frame-size) (? prefix) (? continuation)
+ (? environment) (? name))
+ (disable-frame-pointer-offset!
+ (let ((set-environment (expression->machine-register! environment d4)))
+ (delete-dead-registers!)
+ `(,@set-environment
+ ,@(generate-invocation-prefix prefix (list d4))
+ ,(load-constant name '(D 5))
+ ,(load-dnw frame-size 0)
+ (JMP ,entry:compiler-lookup-apply)))))
+
+(define-rule statement
+ (INVOCATION:PRIMITIVE (? number-pushed) (? prefix) (? continuation)
+ (? primitive))
+ (disable-frame-pointer-offset!
+ `(,@(generate-invocation-prefix prefix '())
+ ,@(if (eq? primitive compiled-error-procedure)
+ `(,(load-dnw (1+ number-pushed) 0)
+ (JMP ,entry:compiler-error))
+ `(,(load-dnw (primitive-datum primitive) 6)
+ (JMP ,entry:compiler-primitive-apply))))))
+
+(define-rule statement
+ (RETURN)
+ (disable-frame-pointer-offset!
+ `(,@(clear-map!)
+ (CLR B (@A 7))
+ (RTS))))
+\f
+(define (generate-invocation-prefix prefix needed-registers)
+ (let ((clear-map (clear-map!)))
+ (need-registers! needed-registers)
+ `(,@clear-map
+ ,@(case (car prefix)
+ ((NULL) '())
+ ((MOVE-FRAME-UP)
+ (apply generate-invocation-prefix:move-frame-up (cdr prefix)))
+ ((APPLY-CLOSURE)
+ (apply generate-invocation-prefix:apply-closure (cdr prefix)))
+ ((APPLY-STACK)
+ (apply generate-invocation-prefix:apply-stack (cdr prefix)))
+ (else
+ (error "bad prefix type" prefix))))))
+
+(define (generate-invocation-prefix:move-frame-up frame-size how-far)
+ (cond ((zero? how-far) '())
+ ((zero? frame-size)
+ (increment-anl 7 how-far))
+ ((= frame-size 1)
+ `((MOVE L (@A+ 7) ,(offset-reference a7 (-1+ how-far)))
+ ,@(increment-anl 7 (-1+ how-far))))
+ ((= frame-size 2)
+ (if (= how-far 1)
+ `((MOVE L (@AO 7 4) (@AO 7 8))
+ (MOVE L (@A+ 7) (@A 7)))
+ (let ((i `(MOVE L (@A+ 7) ,(offset-reference a7 (-1+ how-far)))))
+ `(,i ,i ,@(increment-anl 7 (- how-far 2))))))
+ (else
+ (let ((temp-0 (allocate-temporary-register! 'ADDRESS))
+ (temp-1 (allocate-temporary-register! 'ADDRESS)))
+ `((LEA ,(offset-reference a7 frame-size)
+ ,(register-reference temp-0))
+ (LEA ,(offset-reference a7 (+ frame-size how-far))
+ ,(register-reference temp-1))
+ ,@(generate-n-times frame-size 5
+ `(MOVE L
+ (@-A ,(- temp-0 8))
+ (@-A ,(- temp-1 8)))
+ (lambda (generator)
+ (generator (allocate-temporary-register! 'DATA))))
+ (MOVE L ,(register-reference temp-1) (A 7)))))))
+
+(define (generate-invocation-prefix:apply-closure frame-size receiver-offset)
+ (let ((label (generate-label)))
+ `(,@(apply-closure-sequence frame-size receiver-offset label)
+ (LABEL ,label))))
+
+(define (generate-invocation-prefix:apply-stack frame-size receiver-offset
+ n-levels)
+ (let ((label (generate-label)))
+ `(,@(apply-stack-sequence frame-size receiver-offset n-levels label)
+ (LABEL ,label))))
+\f
+;;; This is invoked by the top level of the LAP generator.
+
+(define generate/quotation-header
+ (let ((declare-constant
+ (lambda (entry)
+ `(SCHEME-OBJECT ,(cdr entry) ,(car entry)))))
+ (lambda (block-label constants references uuo-links)
+ `(,@(map declare-constant references)
+ ,@(map declare-constant uuo-links)
+ ,@(map declare-constant constants)
+ ,@(if (or (not (null? references))
+ (not (null? uuo-links)))
+ `(,@(let ((environment-label (allocate-constant-label)))
+ `((SCHEME-OBJECT ,environment-label ENVIRONMENT)
+ (LEA (@PCR ,environment-label) (A 0))))
+ (MOVE L ,reg:environment (@A 0))
+ (LEA (@PCR ,block-label) (A 0))
+ ,@(if (null? references)
+ '()
+ `((LEA (@PCR ,(cdar references)) (A 1))
+ ,@(if (null? (cdr references))
+ `((JSR ,entry:compiler-cache-variable))
+ `(,(load-dnw (length references) 1)
+ (JSR ,entry:compiler-cache-variable-multiple)))
+ ,@(make-external-label (generate-label))))
+ ,@(if (null? uuo-links)
+ '()
+ `((LEA (@PCR ,(cdar uuo-links)) (A 1))
+ ,@(if (null? (cdr uuo-links))
+ `((JSR ,entry:compiler-uuo-link))
+ `(,(load-dnw (length uuo-links) 1)
+ (JSR ,entry:compiler-uuo-link-multiple)))
+ ,@(make-external-label (generate-label)))))
+ '())))))
+\f
+;;;; Procedure/Continuation Entries
+
+;;; The following calls MUST appear as the first thing at the entry
+;;; point of a procedure. They assume that the register map is clear
+;;; and that no register contains anything of value.
+
+;;; **** The only reason that this is true is that no register is live
+;;; across calls. If that were not true, then we would have to save
+;;; any such registers on the stack so that they would be GC'ed
+;;; appropriately.
+
+(define-rule statement
+ (PROCEDURE-HEAP-CHECK (? label))
+ (disable-frame-pointer-offset!
+ (let ((gc-label (generate-label)))
+ `(,@(procedure-header (label->procedure label) gc-label)
+ (CMP L ,reg:compiled-memtop (A 5))
+ (B GE S (@PCR ,gc-label))))))
+
+;;; Note: do not change the MOVE.W in the setup-lexpr call to a MOVEQ.
+;;; The setup-lexpr code assumes a fixed calling sequence to compute
+;;; the GC address if that is needed. This could be changed so that
+;;; the microcode determined how far to back up based on the argument,
+;;; or by examining the calling sequence.
+
+(define-rule statement
+ (SETUP-LEXPR (? label))
+ (disable-frame-pointer-offset!
+ (let ((procedure (label->procedure label)))
+ `(,@(procedure-header procedure false)
+ (MOVE W
+ (& ,(+ (procedure-required procedure)
+ (procedure-optional procedure)
+ (if (procedure/closure? procedure) 1 0)))
+ (D 1))
+ (MOVEQ (& ,(if (procedure-rest procedure) 1 0)) (D 2))
+ (JSR , entry:compiler-setup-lexpr)))))
+
+(define-rule statement
+ (CONTINUATION-HEAP-CHECK (? internal-label))
+ (enable-frame-pointer-offset!
+ (continuation-frame-pointer-offset (label->continuation internal-label)))
+ (let ((gc-label (generate-label)))
+ `((LABEL ,gc-label)
+ (JSR ,entry:compiler-interrupt-continuation)
+ ,@(make-external-label internal-label)
+ (CMP L ,reg:compiled-memtop (A 5))
+ (B GE S (@PCR ,gc-label)))))
+\f
+(define (procedure-header procedure gc-label)
+ (let ((internal-label (procedure-label procedure)))
+ (append! (if (procedure/closure? procedure)
+ (let ((required (1+ (procedure-required procedure)))
+ (optional (procedure-optional procedure))
+ (label (procedure-external-label procedure)))
+ (if (and (procedure-rest procedure)
+ (zero? required))
+ (begin (set-procedure-external-label! procedure
+ internal-label)
+ `((ENTRY-POINT ,internal-label)))
+ `((ENTRY-POINT ,label)
+ ,@(make-external-label label)
+ ,(test-dnw required 0)
+ ,@(cond ((procedure-rest procedure)
+ `((B GE S (@PCR ,internal-label))))
+ ((zero? optional)
+ `((B EQ S (@PCR ,internal-label))))
+ (else
+ (let ((wna-label (generate-label)))
+ `((B LT S (@PCR ,wna-label))
+ ,(test-dnw (+ required optional) 0)
+ (B LE S (@PCR ,internal-label))
+ (LABEL ,wna-label)))))
+ (JMP ,entry:compiler-wrong-number-of-arguments))))
+ '())
+ (if gc-label
+ `((LABEL ,gc-label)
+ (JSR ,entry:compiler-interrupt-procedure))
+ '())
+ `(,@(make-external-label internal-label)))))
+
+(define (make-external-label label)
+ `((DC W (- ,label ,*block-start-label*))
+ (LABEL ,label)))
\ No newline at end of file
--- /dev/null
+#| -*-Scheme-*-
+
+$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/compiler/machines/bobcat/rules4.scm,v 1.1 1987/06/13 20:59:21 cph Exp $
+
+Copyright (c) 1987 Massachusetts Institute of Technology
+
+This material was developed by the Scheme project at the Massachusetts
+Institute of Technology, Department of Electrical Engineering and
+Computer Science. Permission to copy this software, to redistribute
+it, and to use it for any purpose is granted, subject to the following
+restrictions and understandings.
+
+1. Any copy made of this software must include this copyright notice
+in full.
+
+2. Users of this software agree to make their best efforts (a) to
+return to the MIT Scheme project any improvements or extensions that
+they make, so that these may be included in future releases; and (b)
+to inform MIT of noteworthy uses of this software.
+
+3. All materials developed as a consequence of the use of this
+software shall duly acknowledge such use, in accordance with the usual
+standards of acknowledging credit in academic research.
+
+4. MIT has made no warrantee or representation that the operation of
+this software will be error-free, and MIT is under no obligation to
+provide any services, by way of maintenance, update, or otherwise.
+
+5. In conjunction with products arising from the use of this material,
+there shall be no use of the name of the Massachusetts Institute of
+Technology nor of any adaptation thereof in any advertising,
+promotional, or sales literature without prior written consent from
+MIT in each case. |#
+
+;;;; LAP Generation Rules: Interpreter Calls
+
+(declare (usual-integrations))
+\f
+;;;; Interpreter Calls
+
+(define-rule statement
+ (INTERPRETER-CALL:ACCESS (? environment) (? name))
+ (lookup-call entry:compiler-access environment name))
+
+(define-rule statement
+ (INTERPRETER-CALL:LOOKUP (? environment) (? name) (? safe?))
+ (lookup-call (if safe? entry:compiler-safe-lookup entry:compiler-lookup)
+ environment name))
+
+(define-rule statement
+ (INTERPRETER-CALL:UNASSIGNED? (? environment) (? name))
+ (lookup-call entry:compiler-unassigned? environment name))
+
+(define-rule statement
+ (INTERPRETER-CALL:UNBOUND? (? environment) (? name))
+ (lookup-call entry:compiler-unbound? environment name))
+
+(define (lookup-call entry environment name)
+ (let ((set-environment (expression->machine-register! environment a0)))
+ (let ((clear-map (clear-map!)))
+ `(,@set-environment
+ ,@clear-map
+ ,(load-constant name '(A 1))
+ (JSR ,entry)
+ ,@(make-external-label (generate-label))))))
+
+(define-rule statement
+ (INTERPRETER-CALL:ENCLOSE (? number-pushed))
+ (decrement-frame-pointer-offset! number-pushed
+ `((MOVE L (A 5) ,reg:enclose-result)
+ (MOVE B (& ,(ucode-type vector)) ,reg:enclose-result)
+ ,(load-non-pointer (ucode-type manifest-vector) number-pushed
+ '(@A+ 5))
+ ,@(generate-n-times number-pushed 5 '(MOVE L (@A+ 7) (@A+ 5))
+ (lambda (generator)
+ (generator (allocate-temporary-register! 'DATA)))))
+#| Alternate sequence which minimizes code size.
+ DO NOT USE THIS! The `clear-registers!' call does not distinguish between
+ registers containing objects and registers containing unboxed things, and
+ as a result can write unboxed stuff to memory.
+ `(,@(clear-registers! a0 a1 d0)
+ (MOVE W (& ,number-pushed) (D 0))
+ (JSR ,entry:compiler-enclose))
+|#
+ ))
+\f
+(define-rule statement
+ (INTERPRETER-CALL:DEFINE (? environment) (? name) (? value))
+ (QUALIFIER (not (eq? 'CONS-POINTER (car value))))
+ (assignment-call:default entry:compiler-define environment name value))
+
+(define-rule statement
+ (INTERPRETER-CALL:SET! (? environment) (? name) (? value))
+ (QUALIFIER (not (eq? 'CONS-POINTER (car value))))
+ (assignment-call:default entry:compiler-set! environment name value))
+
+(define (assignment-call:default entry environment name value)
+ (let ((set-environment (expression->machine-register! environment a0)))
+ (let ((set-value (expression->machine-register! value a2)))
+ (let ((clear-map (clear-map!)))
+ `(,@set-environment
+ ,@set-value
+ ,@clear-map
+ ,(load-constant name '(A 1))
+ (JSR ,entry)
+ ,@(make-external-label (generate-label)))))))
+
+(define-rule statement
+ (INTERPRETER-CALL:DEFINE (? environment) (? name)
+ (CONS-POINTER (CONSTANT (? type))
+ (REGISTER (? datum))))
+ (assignment-call:cons-pointer entry:compiler-define environment name type
+ datum))
+
+(define-rule statement
+ (INTERPRETER-CALL:SET! (? environment) (? name)
+ (CONS-POINTER (CONSTANT (? type))
+ (REGISTER (? datum))))
+ (assignment-call:cons-pointer entry:compiler-set! environment name type
+ datum))
+
+(define (assignment-call:cons-pointer entry environment name type datum)
+ (let ((set-environment (expression->machine-register! environment a0)))
+ (let ((datum (coerce->any datum)))
+ (let ((clear-map (clear-map!)))
+ `(,@set-environment
+ (MOVE L ,datum ,reg:temp)
+ (MOVE B (& ,type) ,reg:temp)
+ ,@clear-map
+ (MOVE L ,reg:temp (A 2))
+ ,(load-constant name '(A 1))
+ (JSR ,entry)
+ ,@(make-external-label (generate-label)))))))
+\f
+(define-rule statement
+ (INTERPRETER-CALL:CACHE-REFERENCE (? extension) (? safe?))
+ (let ((set-extension (expression->machine-register! extension a0)))
+ (let ((clear-map (clear-map!)))
+ `(,@set-extension
+ ,@clear-map
+ (JSR ,(if safe?
+ entry:compiler-safe-reference-trap
+ entry:compiler-reference-trap))
+ ,@(make-external-label (generate-label))))))
+
+(define-rule statement
+ (INTERPRETER-CALL:CACHE-ASSIGNMENT (? extension) (? value))
+ (QUALIFIER (not (eq? 'CONS-POINTER (car value))))
+ (let ((set-extension (expression->machine-register! extension a0)))
+ (let ((set-value (expression->machine-register! value a1)))
+ (let ((clear-map (clear-map!)))
+ `(,@set-extension
+ ,@set-value
+ ,@clear-map
+ (JSR ,entry:compiler-assignment-trap)
+ ,@(make-external-label (generate-label)))))))
+
+(define-rule statement
+ (INTERPRETER-CALL:CACHE-ASSIGNMENT (? extension)
+ (CONS-POINTER (CONSTANT (? type))
+ (REGISTER (? datum))))
+ (let ((set-extension (expression->machine-register! extension a0)))
+ (let ((datum (coerce->any datum)))
+ (let ((clear-map (clear-map!)))
+ `(,@set-extension
+ (MOVE L ,datum ,reg:temp)
+ (MOVE B (& ,type) ,reg:temp)
+ ,@clear-map
+ (MOVE L ,reg:temp (A 1))
+ (JSR ,entry:compiler-assignment-trap)
+ ,@(make-external-label (generate-label)))))))
+\f
+;;;; Poppers
+
+(define-rule statement
+ (MESSAGE-RECEIVER:CLOSURE (? frame-size))
+ (record-push!
+ `((MOVE L (& ,(* frame-size 4)) (@-A 7)))))
+
+(define-rule statement
+ (MESSAGE-RECEIVER:STACK (? frame-size))
+ (record-push!
+ `((MOVE L (& ,(+ #x00100000 (* frame-size 4))) (@-A 7)))))
+
+(define-rule statement
+ (MESSAGE-RECEIVER:SUBPROBLEM (? label))
+ (record-continuation-frame-pointer-offset! label)
+ (increment-frame-pointer-offset! 2
+ `((PEA (@PCR ,label))
+ (MOVE B (& ,type-code:return-address) (@A 7))
+ (MOVE L (& #x00200000) (@-A 7)))))
+
+(define (apply-closure-sequence frame-size receiver-offset label)
+ `(,(load-dnw frame-size 1)
+ (LEA (@AO 7 ,(* (+ receiver-offset (frame-pointer-offset)) 4)) (A 0))
+ (LEA (@PCR ,label) (A 1))
+ (JMP ,popper:apply-closure)))
+
+(define (apply-stack-sequence frame-size receiver-offset n-levels label)
+ `((MOVEQ (& ,n-levels) (D 0))
+ ,(load-dnw frame-size 1)
+ (LEA (@AO 7 ,(* (+ receiver-offset (frame-pointer-offset)) 4)) (A 0))
+ (LEA (@PCR ,label) (A 1))
+ (JMP ,popper:apply-stack)))
+
+(define-rule statement
+ (MESSAGE-SENDER:VALUE (? receiver-offset))
+ (disable-frame-pointer-offset!
+ `(,@(clear-map!)
+ ,@(increment-anl 7 (+ receiver-offset (frame-pointer-offset)))
+ (JMP ,popper:value))))
\ No newline at end of file
projects / mit-scheme.git / commitdiff