| 1 | ;;;-*- Mode: Lisp; Package: CCL -*-
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| 2 | ;;;
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| 3 | ;;; Copyright (C) 2005, 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 | ;;; Comparisons make more sense if arg order is "dest, src", instead
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| 20 | ;;; of the gas/ATT arg order.
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| 21 |
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| 22 | (defx86lapmacro rcmp (src dest)
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| 23 | `(cmp ,dest ,src))
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| 24 |
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| 25 | (defx86lapmacro clrq (reg)
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| 26 | `(xorq (% ,reg) (% ,reg)))
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| 27 |
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| 28 | (defx86lapmacro set-nargs (n)
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| 29 | (if (eql n 0)
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| 30 | `(xorw (% nargs) (% nargs))
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| 31 | `(movw ($ ',n) (% nargs))))
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| 32 |
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| 33 | (defx86lapmacro check-nargs (min &optional (max min))
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| 34 | (let* ((ok (gensym)))
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| 35 | (if (and max (= max min))
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| 36 | `(progn
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| 37 | (rcmp (% nargs) ($ ',min))
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| 38 | (je.pt ,ok)
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| 39 | (uuo-error-wrong-number-of-args)
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| 40 | ,ok)
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| 41 | (if (null max)
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| 42 | (unless (zerop min)
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| 43 | `(progn
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| 44 | (rcmp (% nargs) ($ ',min))
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| 45 | (jae.pt ,ok)
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| 46 | (uuo-error-too-few-args)
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| 47 | ,ok))
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| 48 | (if (zerop min)
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| 49 | `(progn
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| 50 | (rcmp (% nargs) ($ ',max))
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| 51 | (jb.pt ,ok)
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| 52 | (uuo-error-too-many-args)
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| 53 | ,ok)
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| 54 | (let* ((sofar (gensym)))
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| 55 | `(progn
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| 56 | (rcmp (% nargs) ($ ',min))
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| 57 | (jae.pt ,sofar)
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| 58 | (uuo-error-too-few-args)
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| 59 | ,sofar
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| 60 | (rcmp (% nargs) ($ ',max))
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| 61 | (jbe.pt ,ok)
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| 62 | (uuo-error-too-many-args)
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| 63 | ,ok)))))))
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| 64 |
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| 65 |
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| 66 |
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| 67 | (defx86lapmacro extract-lisptag (node dest)
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| 68 | `(progn
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| 69 | (movb ($ x8664::tagmask) (%b ,dest))
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| 70 | (andb (%b ,node) (%b ,dest))))
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| 71 |
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| 72 | (defx86lapmacro extract-fulltag (node dest)
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| 73 | `(progn
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| 74 | (movb ($ x8664::fulltagmask) (%b ,dest))
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| 75 | (andb (%b ,node) (%b ,dest))))
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| 76 |
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| 77 | (defx86lapmacro extract-subtag (node dest)
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| 78 | `(movb (@ x8664::misc-subtag-offset (% ,node)) (%b ,dest)))
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| 79 |
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| 80 | (defx86lapmacro extract-typecode (node dest)
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| 81 | ;;; In general, these things are only defined to affect the low
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| 82 | ;;; byte of the destination register. This can also affect
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| 83 | ;;; the #xff00 byte.
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| 84 | (let* ((done (gensym)))
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| 85 | `(progn
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| 86 | (extract-lisptag ,node ,dest)
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| 87 | (rcmp (%b ,dest) ($ x8664::tag-misc))
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| 88 | (jne ,done)
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| 89 | (movb (@ x8664::misc-subtag-offset (% ,node)) (%b ,dest))
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| 90 | ,done)))
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| 91 |
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| 92 | (defx86lapmacro trap-unless-typecode= (node tag &optional (immreg 'imm0))
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| 93 | (let* ((ok (gensym)))
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| 94 | `(progn
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| 95 | (extract-typecode ,node ,immreg)
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| 96 | (cmpb ($ ,tag) (%b ,immreg))
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| 97 | (je.pt ,ok)
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| 98 | (uuo-error-reg-not-tag (% ,node) ($ ,tag))
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| 99 | ,ok)))
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| 100 |
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| 101 | (defx86lapmacro trap-unless-fulltag= (node tag &optional (immreg 'imm0))
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| 102 | (let* ((ok (gensym)))
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| 103 | `(progn
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| 104 | (extract-fulltag ,node ,immreg)
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| 105 | (cmpb ($ ,tag) (%b ,immreg))
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| 106 | (je.pt ,ok)
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| 107 | (uuo-error-reg-not-tag (% ,node) ($ ,tag))
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| 108 | ,ok)))
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| 109 |
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| 110 | (defx86lapmacro trap-unless-lisptag= (node tag &optional (immreg 'imm0))
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| 111 | (let* ((ok (gensym)))
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| 112 | `(progn
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| 113 | (extract-lisptag ,node ,immreg)
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| 114 | (cmpb ($ ,tag) (%b ,immreg))
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| 115 | (je.pt ,ok)
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| 116 | (uuo-error-reg-not-tag (% ,node) ($ ,tag))
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| 117 | ,ok)))
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| 118 |
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| 119 | (defx86lapmacro trap-unless-fixnum (node)
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| 120 | (let* ((ok (gensym)))
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| 121 | `(progn
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| 122 | (testb ($ x8664::tagmask) (%b ,node))
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| 123 | (je.pt ,ok)
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| 124 | (uuo-error-reg-not-fixnum (% ,node))
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| 125 | ,ok)))
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| 126 |
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| 127 | ;;; On x8664, NIL has its own tag, so no other lisp object can
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| 128 | ;;; have the same low byte as NIL. (That probably won't be
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| 129 | ;;; true on x8632.)
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| 130 | (defx86lapmacro cmp-reg-to-nil (reg)
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| 131 | `(cmpb ($ (logand #xff x8664::nil-value)) (%b ,reg)))
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| 132 |
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| 133 |
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| 134 | (defx86lapmacro unbox-fixnum (src dest)
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| 135 | `(progn
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| 136 | (mov (% ,src) (% ,dest))
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| 137 | (sar ($ x8664::fixnumshift) (% ,dest))))
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| 138 |
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| 139 | (defx86lapmacro box-fixnum (src dest)
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| 140 | `(imulq ($ x8664::fixnumone) (% ,src) (% ,dest)))
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| 141 |
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| 142 |
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| 143 | (defx86lapmacro get-single-float (node dest)
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| 144 | `(progn
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| 145 | (movd (% ,node) (% ,dest))
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| 146 | (psrlq ($ 32) (% ,dest))))
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| 147 |
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| 148 |
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| 149 | ;;; Note that this modifies the src argument.
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| 150 | (defx86lapmacro put-single-float (src node)
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| 151 | `(progn
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| 152 | (psllq ($ 32) (% ,src))
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| 153 | (movd (% ,src) (% ,node))
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| 154 | (movb ($ x8664::tag-single-float) (%b ,node))))
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| 155 |
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| 156 | (defx86lapmacro get-double-float (src fpreg)
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| 157 | `(movsd (@ x8664::double-float.value (% ,src)) (% ,fpreg)))
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| 158 |
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| 159 | (defx86lapmacro put-double-float (fpreg dest)
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| 160 | `(movsd (% ,fpreg) (@ x8664::double-float.value (% ,dest))))
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| 161 |
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| 162 |
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| 163 |
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| 164 | (defx86lapmacro getvheader (src dest)
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| 165 | `(movq (@ x8664::misc-header-offset (% ,src)) (% ,dest)))
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| 166 |
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| 167 | ;;; "Size" is unboxed element-count. vheader and dest should
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| 168 | ;;; both be immediate registers
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| 169 | (defx86lapmacro header-size (vheader dest)
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| 170 | `(progn
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| 171 | (mov (% ,vheader) (% ,dest))
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| 172 | (shr ($ x8664::num-subtag-bits) (% ,dest))))
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| 173 |
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| 174 |
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| 175 | ;;; "Length" is fixnum element-count.
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| 176 | (defx86lapmacro header-length (vheader dest)
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| 177 | `(progn
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| 178 | (movq ($ (lognot 255)) (% ,dest))
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| 179 | (andq (% ,vheader) (% ,dest))
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| 180 | (shr ($ (- x8664::num-subtag-bits x8664::fixnumshift)) (% ,dest))))
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| 181 |
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| 182 | (defx86lapmacro header-subtag[fixnum] (vheader dest)
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| 183 | `(progn
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| 184 | (lea (@ (% ,vheader) 8) (% ,dest))
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| 185 | (andl ($ '255) (%l ,dest))))
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| 186 |
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| 187 | (defx86lapmacro vector-size (vector vheader dest)
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| 188 | `(progn
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| 189 | (getvheader ,vector ,vheader)
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| 190 | (header-size ,vheader ,dest)))
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| 191 |
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| 192 | (defx86lapmacro vector-length (vector dest)
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| 193 | `(progn
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| 194 | (movq ($ (lognot 255)) (% ,dest))
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| 195 | (andq (@ x8664::misc-header-offset (% ,vector)) (% ,dest))
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| 196 | (shr ($ (- x8664::num-subtag-bits x8664::fixnumshift)) (% ,dest))))
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| 197 |
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| 198 |
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| 199 | (defx86lapmacro int-to-double (int temp double)
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| 200 | `(progn
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| 201 | (unbox-fixnum ,int ,temp)
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| 202 | (cvtsi2sdq (% ,temp) (% ,double))))
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| 203 |
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| 204 | (defx86lapmacro int-to-single (int temp single)
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| 205 | `(progn
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| 206 | (unbox-fixnum ,int ,temp)
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| 207 | (cvtsi2ssq (% ,temp) (% ,single))))
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| 208 |
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| 209 | (defx86lapmacro ref-global (global reg)
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| 210 | `(movq (@ (+ x8664::nil-value ,(x8664::%kernel-global global))) (% ,reg)))
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| 211 |
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| 212 | (defx86lapmacro ref-global.l (global reg)
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| 213 | `(movl (@ (+ x8664::nil-value ,(x8664::%kernel-global global))) (%l ,reg)))
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| 214 |
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| 215 | (defx86lapmacro set-global (reg global)
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| 216 | `(movq (% ,reg) (@ (+ x8664::nil-value ,(x8664::%kernel-global global)))))
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| 217 |
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| 218 | (defx86lapmacro macptr-ptr (src dest)
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| 219 | `(movq (@ x8664::macptr.address (% ,src)) (% ,dest)))
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| 220 |
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| 221 | ;;; CODE is unboxed char-code (in low 8 bits); CHAR needs to be boxed.
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| 222 | (defx86lapmacro box-character (code char)
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| 223 | `(progn
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| 224 | (box-fixnum ,code ,char)
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| 225 | (shl ($ (- x8664::charcode-shift x8664::fixnumshift)) (% ,char))
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| 226 | (movb ($ x8664::subtag-character) (%b ,char))))
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| 227 |
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| 228 |
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| 229 | ;;; index is a constant
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| 230 | (defx86lapmacro svref (vector index dest)
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| 231 | `(movq (@ (+ x8664::misc-data-offset (* ,index 8)) (% ,vector)) (% ,dest)))
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| 232 |
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| 233 | ;;; Index is still a constant
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| 234 | (defx86lapmacro svset (vector index new)
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| 235 | `(movq (% ,new) (@ (+ x8664::misc-data-offset (* ,index 8)) (% ,vector))))
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| 236 |
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| 237 |
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| 238 |
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| 239 | ;;; Frames, function entry and exit.
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| 240 |
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| 241 |
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| 242 | ;;; Simple frame, since the caller didn't reserve space for it.
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| 243 | (defx86lapmacro save-simple-frame ()
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| 244 | `(progn
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| 245 | (pushq (% rbp))
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| 246 | (movq (% rsp) (% rbp))))
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| 247 |
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| 248 | (defx86lapmacro save-frame-variable-arg-count ()
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| 249 | (let* ((push (gensym))
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| 250 | (done (gensym)))
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| 251 | `(progn
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| 252 | (movzwl (% nargs) (%l imm0))
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| 253 | (subq ($ (* $numx8664argregs x8664::node-size)) (% imm0))
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| 254 | (jle ,push)
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| 255 | (movq (% rbp) (@ 8 (% rsp) (% imm0)))
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| 256 | (leaq (@ 8 (% rsp) (% imm0)) (% rbp))
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| 257 | (popq (@ 8 (% rbp)))
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| 258 | (jmp ,done)
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| 259 | ,push
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| 260 | (save-simple-frame)
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| 261 | ,done)))
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| 262 |
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| 263 |
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| 264 | (defx86lapmacro restore-simple-frame ()
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| 265 | `(progn
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| 266 | (leave)))
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| 267 |
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| 268 |
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| 269 |
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| 270 | (defx86lapmacro discard-reserved-frame ()
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| 271 | `(add ($ '2) (% rsp)))
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| 272 |
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| 273 | ;;; Return to caller.
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| 274 | (defx86lapmacro single-value-return (&optional (words-to-discard 0))
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| 275 | (if (zerop words-to-discard)
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| 276 | `(ret)
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| 277 | `(ret ($ ,(* x8664::node-size words-to-discard)))))
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| 278 |
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| 279 | ;;; Using *x8664-backend* here is wrong but expedient.
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| 280 | (defun x86-subprim-offset (name)
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| 281 | (let* ((info (find name (arch::target-subprims-table (backend-target-arch *x8664-backend*)) :test #'string-equal :key #'subprimitive-info-name))
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| 282 | (offset (when info
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| 283 | (subprimitive-info-offset info))))
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| 284 | (or offset
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| 285 | (error "Unknown subprim: ~s" name))))
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| 286 |
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| 287 | (defx86lapmacro jmp-subprim (name)
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| 288 | `(jmp (@ ,(x86-subprim-offset name))))
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| 289 |
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| 290 | (defx86lapmacro call-subprim (name)
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| 291 | `(progn
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| 292 | (:talign 4)
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| 293 | (call (@ ,(x86-subprim-offset name)))
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| 294 | (recover-fn-from-rip)))
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| 295 |
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| 296 |
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| 297 | (defx86lapmacro %car (src dest)
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| 298 | `(movq (@ x8664::cons.car (% ,src)) (% ,dest)))
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| 299 |
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| 300 | (defx86lapmacro %cdr (src dest)
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| 301 | `(movq (@ x8664::cons.cdr (% ,src)) (% ,dest)))
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| 302 |
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| 303 | (defx86lapmacro stack-probe ()
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| 304 | (let* ((ok (gensym)))
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| 305 | `(progn
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| 306 | (rcmp (% rsp) (@ (% rcontext) x8664::tcr.cs-limit))
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| 307 | (jae.pt ,ok)
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| 308 | (uuo-stack-overflow)
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| 309 | ,ok)))
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| 310 |
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| 311 | (defx86lapmacro load-constant (constant dest &optional (fn 'fn))
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| 312 | `(movq (@ ',constant (% ,fn)) (% ,dest)))
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| 313 |
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| 314 | (defx86lapmacro recover-fn-from-rip ()
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| 315 | (let* ((next (gensym)))
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| 316 | `(progn
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| 317 | (lea (@ (- (:^ ,next)) (% rip)) (% fn))
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| 318 | ,next)))
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| 319 |
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| 320 | ;;; call symbol named NAME, setting nargs to NARGS. Do the TRA
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| 321 | ;;; hair. Args should already be in arg regs, and we expect
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| 322 | ;;; to return a single value.
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| 323 | (defx86lapmacro call-symbol (name nargs)
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| 324 | `(progn
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| 325 | (load-constant ,name fname)
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| 326 | (set-nargs ,nargs)
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| 327 | (:talign 4)
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| 328 | (call (@ x8664::symbol.fcell (% fname)))
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| 329 | (recover-fn-from-rip)))
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| 330 |
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| 331 |
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| 332 | ;;; tail call the function named by NAME with nargs NARGS. %FN is
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| 333 | ;;; the caller, which will be in %FN on entry to the callee. For the
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| 334 | ;;; couple of instructions where neither %RA0 or %FN point to the
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| 335 | ;;; current function, ensure that %XFN does; this is necessary to
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| 336 | ;;; prevent the current function from being GCed halfway through
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| 337 | ;;; those couple of instructions.
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| 338 | (defx86lapmacro jump-symbol (name nargs)
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| 339 | `(progn
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| 340 | (load-constant ,name fname)
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| 341 | (set-nargs ,nargs)
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| 342 | (jmp (@ x8664::symbol.fcell (% fname)))))
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| 343 |
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| 344 | (defx86lapmacro push-argregs ()
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| 345 | (let* ((done (gensym))
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| 346 | (yz (gensym))
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| 347 | (z (gensym)))
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| 348 | `(progn
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| 349 | (testw (% nargs) (% nargs))
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| 350 | (je ,done)
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| 351 | (cmpw ($ '2) (% nargs))
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| 352 | (je ,yz)
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| 353 | (jb ,z)
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| 354 | (push (% arg_x))
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| 355 | ,yz
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| 356 | (push (% arg_y))
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| 357 | ,z
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| 358 | (push (% arg_z))
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| 359 | ,done)))
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| 360 |
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