| 1 | ;;;-*- Mode: Lisp; Package: CCL -*- |
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| 2 | ;;; |
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| 3 | ;;; Copyright (C) 2007, Clozure Associates and contributors |
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| 4 | ;;; This file is part of OpenMCL. |
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| 5 | ;;; |
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| 6 | ;;; OpenMCL is licensed under the terms of the Lisp Lesser GNU Public |
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| 7 | ;;; License , known as the LLGPL and distributed with OpenMCL as the |
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| 8 | ;;; file "LICENSE". The LLGPL consists of a preamble and the LGPL, |
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| 9 | ;;; which is distributed with OpenMCL as the file "LGPL". Where these |
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| 10 | ;;; conflict, the preamble takes precedence. |
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| 11 | ;;; |
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| 12 | ;;; OpenMCL is referenced in the preamble as the "LIBRARY." |
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| 13 | ;;; |
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| 14 | ;;; The LLGPL is also available online at |
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| 15 | ;;; http://opensource.franz.com/preamble.html |
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| 16 | |
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| 17 | (in-package "CCL") |
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| 18 | |
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| 19 | ;;; On DarwinPPC64: |
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| 20 | ;;; Structures whose size is exactly 16 bytes are passed in 2 GPRs, |
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| 21 | ;;; regardless of the types of their elements, when they are passed |
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| 22 | ;;; by value. |
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| 23 | ;;; Structures which contain unions are passed in N GPRs when passed |
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| 24 | ;;; by value. |
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| 25 | ;;; All other structures passed by value are passed by passing their |
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| 26 | ;;; constituent elements as scalars. (Sort of.) GPR's are "consumed" |
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| 27 | ;;; for and possibly/partly loaded with the contents of each 64-bit |
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| 28 | ;;; word; FPRs (and vector registers) are consumed/loaded for each |
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| 29 | ;;; field of the indicated type. |
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| 30 | ;;; Structures whose size is exactly 16 bytes are returned in GPR3 |
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| 31 | ;;; and GPR4. |
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| 32 | ;;; Structures which contain unions are "returned" by passing a pointer |
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| 33 | ;;; to a structure instance in the first argument. |
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| 34 | ;;; All other structures are returned by returning their constituent |
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| 35 | ;;; elements as scalars. (Note that - in some cases - we may need |
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| 36 | ;;; to reserve space in the foreign stack frame to handle scalar |
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| 37 | ;;; return values that don't fit in registers. Need a way to tell |
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| 38 | ;;; %ff-call about this, as well as runtime support.) |
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| 39 | |
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| 40 | |
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| 41 | (defun darwin64::record-type-contains-union (rtype) |
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| 42 | ;;; RTYPE is a FOREIGN-RECORD-TYPE object. |
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| 43 | ;;; If it, any of its fields, or any fields in an |
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| 44 | ;;; embedded structure or array field is a union, |
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| 45 | ;;; return true. |
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| 46 | ;;; (If this function returns true, we can't |
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| 47 | ;;; pass a structure of type RTYPE - or return one - |
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| 48 | ;;; by passing or returning the values of all of |
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| 49 | ;;; its fields, since some fields are aliased. |
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| 50 | ;;; However, if the record's size is exactly 128 |
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| 51 | ;;; bits, we can pass/return it in two GPRs.) |
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| 52 | (ensure-foreign-type-bits rtype) |
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| 53 | (or (eq (foreign-record-type-kind rtype) :union) |
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| 54 | (dolist (f (foreign-record-type-fields rtype)) |
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| 55 | (let* ((fieldtype (foreign-record-field-type f))) |
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| 56 | (if (and (typep fieldtype 'foreign-record-type) |
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| 57 | (darwin64::record-type-contains-union fieldtype)) |
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| 58 | (return t)) |
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| 59 | (if (typep fieldtype 'foreign-array-type) |
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| 60 | (let* ((atype (foreign-array-type-element-type fieldtype))) |
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| 61 | (if (and (typep atype 'foreign-record-type) |
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| 62 | (darwin64::record-type-contains-union atype)) |
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| 63 | (return t)))))))) |
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| 64 | |
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| 65 | ;;; On DarwinPPC64, we only have to pass a structure as a first |
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| 66 | ;;; argument if the type contains a union |
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| 67 | (defun darwin64::record-type-returns-structure-as-first-arg (rtype) |
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| 68 | (when (and rtype |
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| 69 | (not (typep rtype 'unsigned-byte)) |
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| 70 | (not (member rtype *foreign-representation-type-keywords* |
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| 71 | :test #'eq))) |
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| 72 | (let* ((ftype (if (typep rtype 'foreign-type) |
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| 73 | rtype |
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| 74 | (parse-foreign-type rtype)))) |
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| 75 | (and (typep ftype 'foreign-record-type) |
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| 76 | (not (= (ensure-foreign-type-bits ftype) 128)) |
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| 77 | (darwin64::record-type-contains-union ftype))))) |
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| 78 | |
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| 79 | |
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| 80 | |
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| 81 | |
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| 82 | |
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| 83 | ;;; Generate code to set the fields in a structure R of record-type |
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| 84 | ;;; RTYPE, based on the register values in REGBUF (8 64-bit GPRs, |
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| 85 | ;;; followed by 13 64-bit GPRs.) |
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| 86 | ;;; This also handles the 16-byte structure case. |
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| 87 | ;;; (It doesn't yet handle embedded arrays or bitfields.) |
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| 88 | (defun darwin64::struct-from-regbuf-values (r rtype regbuf) |
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| 89 | (let* ((bits (ccl::ensure-foreign-type-bits rtype))) |
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| 90 | (collect ((forms)) |
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| 91 | (cond ((= bits 128) ;(and (eql day 'tuesday) ...) |
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| 92 | (forms `(setf (ccl::%get-signed-long ,r 0) |
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| 93 | (ccl::%get-signed-long ,regbuf 0) |
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| 94 | (ccl::%get-signed-long ,r 4) |
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| 95 | (ccl::%get-signed-long ,regbuf 4) |
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| 96 | (ccl::%get-signed-long ,r 8) |
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| 97 | (ccl::%get-signed-long ,regbuf 8) |
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| 98 | (ccl::%get-signed-long ,r 12) |
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| 99 | (ccl::%get-signed-long ,regbuf 12)))) |
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| 100 | ;;; One (slightly naive) way to do this is to just |
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| 101 | ;;; copy GPRs into the structure until it's full, |
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| 102 | ;;; then go back and overwrite float-typed fields |
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| 103 | ;;; with FPRs. That'd be very naive if all fields |
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| 104 | ;;; were float-typed, slightly naive if some fields |
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| 105 | ;;; were properly-aligned DOUBLE-FLOATs or if two |
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| 106 | ;;; SINGLE-FLOATs were packed inro a 64-bit word, |
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| 107 | ;;; and not that bad if a SINGLE-FLOAT shared a |
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| 108 | ;;; 64-bit word with a non-FP field. |
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| 109 | (t |
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| 110 | (let* ((fpr-offset (* 8 8)) |
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| 111 | (fields (foreign-record-type-fields rtype))) |
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| 112 | (flet ((next-fpr-offset () |
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| 113 | (prog1 fpr-offset |
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| 114 | (incf fpr-offset 8)))) |
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| 115 | (unless (all-floats-in-field-list fields) |
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| 116 | (do* ((b 0 (+ b 32)) |
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| 117 | (w 0 (+ w 4))) |
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| 118 | ((>= b bits)) |
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| 119 | (declare (fixnum b w)) |
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| 120 | (forms `(setf (%get-unsigned-long ,r ,w) |
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| 121 | (%get-unsigned-long ,regbuf ,w))))) |
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| 122 | (when (some-floats-in-field-list fields) |
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| 123 | (labels ((do-fp-fields (fields accessors) |
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| 124 | (dolist (field fields) |
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| 125 | (let* ((field-type (foreign-record-field-type field)) |
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| 126 | (field-accessor-list (append accessors (list (foreign-record-field-name field)))) |
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| 127 | (valform ())) |
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| 128 | (etypecase field-type |
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| 129 | (foreign-record-type |
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| 130 | (do-fp-fields (foreign-record-type-fields field-type) |
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| 131 | field-accessor-list)) |
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| 132 | (foreign-double-float-type |
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| 133 | (setq valform |
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| 134 | `(%get-double-float ,regbuf ,(next-fpr-offset)))) |
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| 135 | (foreign-single-float-type |
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| 136 | (setq valform |
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| 137 | `(%get-single-float-from-double-ptr |
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| 138 | ,regbuf ,(next-fpr-offset)))) |
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| 139 | (foreign-array-type |
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| 140 | (error "Embedded array-type.")) |
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| 141 | ) |
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| 142 | (when valform |
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| 143 | (forms `(setf ,(%foreign-access-form |
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| 144 | r |
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| 145 | rtype |
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| 146 | 0 |
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| 147 | field-accessor-list) |
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| 148 | ,valform))))))) |
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| 149 | (do-fp-fields (foreign-record-type-fields rtype) nil ))))))) |
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| 150 | `(progn ,@(forms) nil)))) |
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| 151 | |
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| 152 | ;;; "Return" the structure R of foreign type RTYPE, by storing the |
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| 153 | ;;; values of its fields in STACK-PTR and FP-ARG-PTR |
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| 154 | (defun darwin64::return-struct-to-registers (r rtype stack-ptr fp-args-ptr) |
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| 155 | (let* ((bits (require-foreign-type-bits rtype))) |
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| 156 | (collect ((forms)) |
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| 157 | (cond ((= bits 128) ;(and (eql day 'tuesday) ...) |
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| 158 | (forms `(setf (ccl::%get-unsigned-long ,stack-ptr 0) |
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| 159 | (ccl::%get-unsigned-long ,r 0) |
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| 160 | (ccl::%get-unsigned-long ,stack-ptr 4) |
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| 161 | (ccl::%get-unsigned-long ,r 4) |
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| 162 | (ccl::%get-unsigned-long ,stack-ptr 8) |
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| 163 | (ccl::%get-unsigned-long ,r 8) |
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| 164 | (ccl::%get-unsigned-long ,stack-ptr 12) |
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| 165 | (ccl::%get-unsigned-long ,r 12)))) |
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| 166 | (t |
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| 167 | (let* ((fpr-offset 0) |
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| 168 | (fields (foreign-record-type-fields rtype))) |
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| 169 | (unless (all-floats-in-field-list fields) |
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| 170 | (do* ((b 0 (+ b 32)) |
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| 171 | (w 0 (+ w 4))) |
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| 172 | ((>= b bits)) |
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| 173 | (declare (fixnum b w)) |
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| 174 | (forms `(setf (%get-unsigned-long ,stack-ptr ,w) |
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| 175 | (%get-unsigned-long ,r ,w))))) |
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| 176 | (when (some-floats-in-field-list fields) |
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| 177 | (flet ((next-fpr-offset () |
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| 178 | (prog1 fpr-offset |
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| 179 | (incf fpr-offset 8)))) |
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| 180 | (labels ((do-fp-fields (fields accessors) |
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| 181 | (dolist (field fields) |
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| 182 | (let* ((field-type (foreign-record-field-type field)) |
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| 183 | (field-accessor-list (append accessors (list (foreign-record-field-name field)))) |
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| 184 | (valform ())) |
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| 185 | (etypecase field-type |
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| 186 | (foreign-record-type |
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| 187 | (do-fp-fields (foreign-record-type-fields field-type) |
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| 188 | field-accessor-list)) |
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| 189 | (foreign-double-float-type |
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| 190 | (setq valform |
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| 191 | `(%get-double-float ,fp-args-ptr ,(next-fpr-offset)))) |
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| 192 | (foreign-single-float-type |
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| 193 | (setq valform |
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| 194 | `(%get-double-float ,fp-args-ptr ,(next-fpr-offset)))) |
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| 195 | |
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| 196 | (foreign-array-type |
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| 197 | (error "Embedded array-type.")) |
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| 198 | ) |
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| 199 | (when valform |
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| 200 | (let* ((field-form (%foreign-access-form |
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| 201 | r |
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| 202 | rtype |
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| 203 | 0 |
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| 204 | field-accessor-list))) |
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| 205 | (when (typep field-type 'foreign-single-float-type) |
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| 206 | (setq field-form `(float ,field-form 0.0d0))) |
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| 207 | (forms `(setf ,valform ,field-form)))))))) |
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| 208 | (do-fp-fields fields nil ))))))) |
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| 209 | `(progn ,@(forms) nil)))) |
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| 210 | |
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| 211 | ;;; Return an ordered list of all scalar fields in the record type FTYPE. |
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| 212 | (defun darwin64::flatten-fields (ftype) |
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| 213 | (if (darwin64::record-type-contains-union ftype) |
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| 214 | (error "Can't flatten fields in ~s: contains union" ftype)) |
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| 215 | (collect ((fields)) |
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| 216 | (labels ((flatten (field-list bit-offset) |
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| 217 | (dolist (field field-list) |
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| 218 | (let* ((field-type (foreign-record-field-type field)) |
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| 219 | (next-offset (+ bit-offset (foreign-record-field-offset field)))) |
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| 220 | (typecase field-type |
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| 221 | (foreign-record-type |
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| 222 | (flatten (foreign-record-type-fields field-type) next-offset)) |
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| 223 | (foreign-array-type |
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| 224 | (let* ((element-type (foreign-array-type-element-type field-type)) |
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| 225 | (nbits (foreign-type-bits element-type)) |
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| 226 | (align (foreign-type-alignment element-type)) |
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| 227 | (dims (foreign-array-type-dimensions field-type)) |
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| 228 | (n (or (and (null (cdr dims)) (car dims)) |
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| 229 | (error "Can't handle multidimensional foreign arrays"))) |
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| 230 | (pos next-offset)) |
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| 231 | (dotimes (i n) |
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| 232 | (fields (make-foreign-record-field :type element-type |
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| 233 | :bits nbits |
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| 234 | :offset pos)) |
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| 235 | (setq pos (align-offset (+ pos nbits) align))))) |
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| 236 | (t |
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| 237 | (fields (make-foreign-record-field :type field-type |
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| 238 | :bits (foreign-record-field-bits field) |
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| 239 | :offset next-offset)))))))) |
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| 240 | (flatten (foreign-record-type-fields ftype) 0) |
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| 241 | (fields)))) |
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| 242 | |
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| 243 | |
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| 244 | |
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| 245 | |
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| 246 | (defun darwin64::expand-ff-call (callform args &key (arg-coerce #'null-coerce-foreign-arg) (result-coerce #'null-coerce-foreign-result)) |
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| 247 | (let* ((result-type-spec (or (car (last args)) :void)) |
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| 248 | (regbuf nil) |
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| 249 | (result-temp nil) |
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| 250 | (result-form nil) |
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| 251 | (struct-result-type nil) |
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| 252 | (structure-arg-temp nil)) |
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| 253 | (multiple-value-bind (result-type error) |
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| 254 | (ignore-errors (parse-foreign-type result-type-spec)) |
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| 255 | (if error |
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| 256 | (setq result-type-spec :void result-type *void-foreign-type*) |
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| 257 | (setq args (butlast args))) |
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| 258 | (collect ((argforms)) |
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| 259 | (when (eq (car args) :monitor-exception-ports) |
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| 260 | (argforms (pop args))) |
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| 261 | (when (typep result-type 'foreign-record-type) |
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| 262 | (setq result-form (pop args) |
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| 263 | struct-result-type result-type |
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| 264 | result-type *void-foreign-type* |
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| 265 | result-type-spec :void) |
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| 266 | (if (darwin64::record-type-returns-structure-as-first-arg struct-result-type) |
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| 267 | (progn |
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| 268 | (argforms :address) |
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| 269 | (argforms result-form)) |
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| 270 | (progn |
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| 271 | (setq regbuf (gensym) |
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| 272 | result-temp (gensym)) |
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| 273 | (argforms :registers) |
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| 274 | (argforms regbuf)))) |
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| 275 | (let* ((valform nil)) |
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| 276 | (unless (evenp (length args)) |
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| 277 | (error "~s should be an even-length list of alternating foreign types and values" args)) |
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| 278 | (do* ((args args (cddr args))) |
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| 279 | ((null args)) |
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| 280 | (let* ((arg-type-spec (car args)) |
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| 281 | (arg-value-form (cadr args))) |
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| 282 | (if (or (member arg-type-spec *foreign-representation-type-keywords* |
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| 283 | :test #'eq) |
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| 284 | (typep arg-type-spec 'unsigned-byte)) |
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| 285 | (progn |
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| 286 | (argforms arg-type-spec) |
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| 287 | (argforms arg-value-form)) |
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| 288 | (let* ((ftype (parse-foreign-type arg-type-spec)) |
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| 289 | (bits (foreign-type-bits ftype))) |
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| 290 | (if (typep ftype 'foreign-record-type) |
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| 291 | (if (or (darwin64::record-type-contains-union ftype) |
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| 292 | (= bits 128)) |
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| 293 | (progn |
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| 294 | (argforms (ceiling (foreign-record-type-bits ftype) 64)) |
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| 295 | (argforms arg-value-form)) |
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| 296 | (let* ((flattened-fields (darwin64::flatten-fields ftype))) |
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| 297 | |
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| 298 | (flet ((single-float-at-offset (offset) |
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| 299 | (dolist (field flattened-fields) |
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| 300 | (let* ((field-offset (foreign-record-field-offset field))) |
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| 301 | (when (> field-offset offset) |
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| 302 | (return nil)) |
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| 303 | (if (and (= field-offset offset) |
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| 304 | (typep (foreign-record-field-type field) |
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| 305 | 'foreign-single-float-type)) |
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| 306 | (return t))))) |
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| 307 | (double-float-at-offset (offset) |
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| 308 | (dolist (field flattened-fields) |
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| 309 | (let* ((field-offset (foreign-record-field-offset field))) |
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| 310 | (when (> field-offset offset) |
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| 311 | (return nil)) |
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| 312 | (if (and (= field-offset offset) |
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| 313 | (typep (foreign-record-field-type field) |
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| 314 | 'foreign-double-float-type)) |
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| 315 | (return t)))))) |
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| 316 | (unless structure-arg-temp |
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| 317 | (setq structure-arg-temp (gensym))) |
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| 318 | (setq valform `(%setf-macptr ,structure-arg-temp ,arg-value-form)) |
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| 319 | (do* ((bit-offset 0 (+ bit-offset 64)) |
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| 320 | (byte-offset 0 (+ byte-offset 8))) |
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| 321 | ((>= bit-offset bits)) |
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| 322 | (if (double-float-at-offset bit-offset) |
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| 323 | (progn |
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| 324 | (argforms :double-float) |
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| 325 | (argforms `(%get-double-float ,valform ,byte-offset))) |
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| 326 | (let* ((high-single (single-float-at-offset bit-offset)) |
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| 327 | (low-single (single-float-at-offset (+ bit-offset 32)))) |
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| 328 | (if high-single |
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| 329 | (if low-single |
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| 330 | (argforms :hybrid-float-float) |
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| 331 | (argforms :hybrid-float-int)) |
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| 332 | (if low-single |
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| 333 | (argforms :hybrid-int-float) |
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| 334 | (argforms :unsigned-doubleword))) |
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| 335 | (argforms `(%%get-unsigned-longlong ,valform ,byte-offset)))) |
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| 336 | (setq valform structure-arg-temp))))) |
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| 337 | (progn |
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| 338 | (argforms (foreign-type-to-representation-type ftype)) |
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| 339 | (argforms (funcall arg-coerce arg-type-spec arg-value-form)))))))) |
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| 340 | (argforms (foreign-type-to-representation-type result-type)) |
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| 341 | (let* ((call (funcall result-coerce result-type-spec `(,@callform ,@(argforms))))) |
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| 342 | (when structure-arg-temp |
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| 343 | (setq call `(let* ((,structure-arg-temp (%null-ptr))) |
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| 344 | (declare (dynamic-extent ,structure-arg-temp) |
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| 345 | (type macptr ,structure-arg-temp)) |
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| 346 | ,call))) |
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| 347 | (if regbuf |
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| 348 | `(let* ((,result-temp (%null-ptr))) |
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| 349 | (declare (dynamic-extent ,result-temp) |
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| 350 | (type macptr ,result-temp)) |
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| 351 | (%setf-macptr ,result-temp ,result-form) |
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| 352 | (%stack-block ((,regbuf (+ (* 8 8) (* 8 13)))) |
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| 353 | ,call |
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| 354 | ,(darwin64::struct-from-regbuf-values result-temp struct-result-type regbuf))) |
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| 355 | call))))))) |
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| 356 | |
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| 357 | |
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| 358 | ;;; Return 7 values: |
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| 359 | ;;; A list of RLET bindings |
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| 360 | ;;; A list of LET* bindings |
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| 361 | ;;; A list of DYNAMIC-EXTENT declarations for the LET* bindings |
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| 362 | ;;; A list of initializaton forms for (some) structure args |
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| 363 | ;;; A FOREIGN-TYPE representing the "actual" return type. |
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| 364 | ;;; A form which can be used to initialize FP-ARGS-PTR, relative |
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| 365 | ;;; to STACK-PTR. (This is unused on linuxppc32.) |
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| 366 | ;;; The byte offset of the foreign return address, relative to STACK-PTR |
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| 367 | |
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| 368 | (defun darwin64::generate-callback-bindings (stack-ptr fp-args-ptr argvars argspecs result-spec struct-result-name) |
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| 369 | (collect ((lets) |
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| 370 | (rlets) |
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| 371 | (inits) |
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| 372 | (dynamic-extent-names)) |
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| 373 | (let* ((rtype (parse-foreign-type result-spec)) |
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| 374 | (fp-regs-form nil)) |
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| 375 | (flet ((set-fp-regs-form () |
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| 376 | (unless fp-regs-form |
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| 377 | (setq fp-regs-form `(%get-ptr ,stack-ptr ,(- ppc64::c-frame.unused-1 ppc64::c-frame.param0)))))) |
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| 378 | (when (typep rtype 'foreign-record-type) |
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| 379 | (if (darwin64::record-type-contains-union rtype) |
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| 380 | (setq argvars (cons struct-result-name argvars) |
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| 381 | argspecs (cons :address argspecs) |
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| 382 | rtype *void-foreign-type*) |
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| 383 | (rlets (list struct-result-name (or (foreign-record-type-name rtype) |
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| 384 | result-spec))))) |
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| 385 | (when (typep rtype 'foreign-float-type) |
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| 386 | (set-fp-regs-form)) |
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| 387 | (do* ((argvars argvars (cdr argvars)) |
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| 388 | (argspecs argspecs (cdr argspecs)) |
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| 389 | (fp-arg-num 0) |
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| 390 | (offset 0) |
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| 391 | (delta 0) |
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| 392 | (bias 0) |
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| 393 | (use-fp-args nil nil)) |
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| 394 | ((null argvars) |
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| 395 | (values (rlets) (lets) (dynamic-extent-names) (inits) rtype fp-regs-form (- ppc64::c-frame.savelr ppc64::c-frame.param0))) |
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| 396 | (flet ((next-scalar-arg (argtype) |
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| 397 | (setq delta 8 bias 0) |
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| 398 | (prog1 |
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| 399 | `(,(cond |
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| 400 | ((typep argtype 'foreign-single-float-type) |
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| 401 | (if (< (incf fp-arg-num) 14) |
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| 402 | (progn |
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| 403 | (setq use-fp-args t) |
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| 404 | '%get-single-float-from-double-ptr) |
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| 405 | (progn |
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| 406 | '%get-single-float))) |
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| 407 | ((typep argtype 'foreign-double-float-type) |
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| 408 | (if (< (incf fp-arg-num) 14) |
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| 409 | (setq use-fp-args t)) |
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| 410 | '%get-double-float) |
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| 411 | ((and (typep argtype 'foreign-integer-type) |
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| 412 | (= (foreign-integer-type-bits argtype) 64) |
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| 413 | (foreign-integer-type-signed argtype)) |
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| 414 | (setq delta 8) |
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| 415 | '%%get-signed-longlong) |
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| 416 | ((and (typep argtype 'foreign-integer-type) |
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| 417 | (= (foreign-integer-type-bits argtype) 64) |
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| 418 | (not (foreign-integer-type-signed argtype))) |
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| 419 | (setq delta 8) |
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| 420 | '%%get-unsigned-longlong) |
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| 421 | ((or (typep argtype 'foreign-pointer-type) |
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| 422 | (typep argtype 'foreign-array-type)) |
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| 423 | '%get-ptr) |
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| 424 | (t |
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| 425 | (cond ((typep argtype 'foreign-integer-type) |
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| 426 | (let* ((bits (foreign-integer-type-bits argtype)) |
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| 427 | (signed (foreign-integer-type-signed argtype))) |
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| 428 | (cond ((<= bits 8) |
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| 429 | (setq bias 7) |
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| 430 | (if signed |
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| 431 | '%get-signed-byte ' |
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| 432 | '%get-unsigned-byte)) |
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| 433 | ((<= bits 16) |
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| 434 | (setq bias 6) |
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| 435 | (if signed |
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| 436 | '%get-signed-word |
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| 437 | '%get-unsigned-word)) |
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| 438 | ((<= bits 32) |
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| 439 | (setq bias 4) |
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| 440 | (if signed |
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| 441 | '%get-signed-long |
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| 442 | '%get-unsigned-long)) |
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| 443 | (t |
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| 444 | (error "Don't know how to access foreign argument of type ~s" (unparse-foreign-type argtype)))))) |
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| 445 | (t |
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| 446 | (error "Don't know how to access foreign argument of type ~s" (unparse-foreign-type argtype)))))) |
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| 447 | ,(if use-fp-args fp-args-ptr stack-ptr) |
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| 448 | ,(if use-fp-args (* 8 (1- fp-arg-num)) |
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| 449 | (+ offset bias))) |
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| 450 | (incf offset delta)))) |
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| 451 | (let* ((name (car argvars)) |
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| 452 | (spec (car argspecs)) |
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| 453 | (argtype (parse-foreign-type spec)) |
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| 454 | (bits (foreign-type-bits argtype))) |
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| 455 | (if (typep argtype 'foreign-record-type) |
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| 456 | (if (or (darwin64::record-type-contains-union argtype) |
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| 457 | (= bits 128)) |
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| 458 | (progn (setq delta (* (ceiling bits 64) 8)) |
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| 459 | (when name (lets (list name `(%inc-ptr ,stack-ptr ,offset )))) |
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| 460 | (incf offset delta)) |
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| 461 | |
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| 462 | (let* ((flattened-fields (darwin64::flatten-fields argtype))) |
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| 463 | (flet ((double-float-at-offset (offset) |
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| 464 | (dolist (field flattened-fields) |
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| 465 | (let* ((field-offset (foreign-record-field-offset field))) |
|---|
| 466 | (when (> field-offset offset) (return)) |
|---|
| 467 | (if (and (= field-offset offset) |
|---|
| 468 | (typep (foreign-record-field-type field) |
|---|
| 469 | 'foreign-double-float-type)) |
|---|
| 470 | (return t))))) |
|---|
| 471 | (single-float-at-offset (offset) |
|---|
| 472 | (dolist (field flattened-fields) |
|---|
| 473 | (let* ((field-offset (foreign-record-field-offset field))) |
|---|
| 474 | (when (> field-offset offset) (return)) |
|---|
| 475 | (if (and (= field-offset offset) |
|---|
| 476 | (typep (foreign-record-field-type field) |
|---|
| 477 | 'foreign-single-float-type)) |
|---|
| 478 | (return t)))))) |
|---|
| 479 | (when name (rlets (list name (or (foreign-record-type-name argtype) |
|---|
| 480 | spec)))) |
|---|
| 481 | (do* ((bit-offset 0 (+ bit-offset 64)) |
|---|
| 482 | (byte-offset 0 (+ byte-offset 8))) |
|---|
| 483 | ((>= bit-offset bits)) |
|---|
| 484 | (if (double-float-at-offset bit-offset) |
|---|
| 485 | (let* ((init `(setf (%get-double-float ,name ,byte-offset) |
|---|
| 486 | ,(next-scalar-arg (parse-foreign-type :double-float))))) |
|---|
| 487 | (when name |
|---|
| 488 | (inits init))) |
|---|
| 489 | (let* ((high-single (single-float-at-offset bit-offset)) |
|---|
| 490 | (low-single (single-float-at-offset (+ bit-offset 32))) |
|---|
| 491 | (init `(setf (%%get-unsigned-longlong ,name ,byte-offset) |
|---|
| 492 | ,(next-scalar-arg (parse-foreign-type '(:unsigned 64)))))) |
|---|
| 493 | (when name (inits init)) |
|---|
| 494 | (when high-single |
|---|
| 495 | (when (< (incf fp-arg-num) 14) |
|---|
| 496 | (set-fp-regs-form) |
|---|
| 497 | (when name |
|---|
| 498 | (inits `(setf (%get-single-float ,name ,byte-offset) |
|---|
| 499 | (%get-single-float-from-double-ptr |
|---|
| 500 | ,fp-args-ptr |
|---|
| 501 | ,(* 8 (1- fp-arg-num)))))))) |
|---|
| 502 | (when low-single |
|---|
| 503 | (when (< (incf fp-arg-num) 14) |
|---|
| 504 | (set-fp-regs-form) |
|---|
| 505 | (when name |
|---|
| 506 | (inits `(setf (%get-single-float ,name ,(+ 4 byte-offset)) |
|---|
| 507 | (%get-single-float-from-double-ptr |
|---|
| 508 | ,fp-args-ptr |
|---|
| 509 | ,(* 8 (1- fp-arg-num)))))))))))))) |
|---|
| 510 | (let* ((form (next-scalar-arg argtype))) |
|---|
| 511 | (when name |
|---|
| 512 | (lets (list name form))))) |
|---|
| 513 | #+nil |
|---|
| 514 | (when (or (typep argtype 'foreign-pointer-type) |
|---|
| 515 | (typep argtype 'foreign-array-type)) |
|---|
| 516 | (dynamic-extent-names name)) |
|---|
| 517 | (when use-fp-args (set-fp-regs-form))))))))) |
|---|
| 518 | |
|---|
| 519 | (defun darwin64::generate-callback-return-value (stack-ptr fp-args-ptr result return-type struct-return-arg) |
|---|
| 520 | (unless (eq return-type *void-foreign-type*) |
|---|
| 521 | (when (typep return-type 'foreign-single-float-type) |
|---|
| 522 | (setq result `(float ,result 0.0d0))) |
|---|
| 523 | (if (typep return-type 'foreign-record-type) |
|---|
| 524 | ;;; Would have been mapped to :VOID unless record-type contained |
|---|
| 525 | ;;; a single scalar field. |
|---|
| 526 | (darwin64::return-struct-to-registers struct-return-arg return-type stack-ptr fp-args-ptr) |
|---|
| 527 | (let* ((return-type-keyword (foreign-type-to-representation-type return-type)) |
|---|
| 528 | (result-ptr (case return-type-keyword |
|---|
| 529 | ((:single-float :double-float) |
|---|
| 530 | fp-args-ptr) |
|---|
| 531 | (t stack-ptr)))) |
|---|
| 532 | `(setf (, |
|---|
| 533 | (case return-type-keyword |
|---|
| 534 | (:address '%get-ptr) |
|---|
| 535 | (:signed-doubleword '%%get-signed-longlong) |
|---|
| 536 | (:unsigned-doubleword '%%get-unsigned-longlong) |
|---|
| 537 | ((:double-float :single-float) |
|---|
| 538 | '%get-double-float) |
|---|
| 539 | (:unsigned-fullword '%get-unsigned-long) |
|---|
| 540 | (t '%%get-signed-longlong ) |
|---|
| 541 | ) ,result-ptr 0) ,result))))) |
|---|
| 542 | |
|---|
| 543 | |
|---|
