4 ;;;; Return-multiple with other than one value
6 #+sb-assembling ;; we don't want a vop for this one.
7 (define-assembly-routine
11 ;; These four are really arguments.
12 ((:temp nvals any-reg nargs-offset)
13 (:temp vals any-reg nl0-offset)
14 (:temp ocfp any-reg nl1-offset)
15 (:temp lra descriptor-reg lra-offset)
17 ;; These are just needed to facilitate the transfer
18 (:temp lip interior-reg lip-offset)
19 (:temp count any-reg nl2-offset)
20 (:temp src any-reg nl3-offset)
21 (:temp dst any-reg cfunc-offset)
22 (:temp temp descriptor-reg l0-offset)
25 ;; These are needed so we can get at the register args.
26 (:temp a0 descriptor-reg a0-offset)
27 (:temp a1 descriptor-reg a1-offset)
28 (:temp a2 descriptor-reg a2-offset)
29 (:temp a3 descriptor-reg a3-offset))
31 ;; Note, because of the way the return-multiple vop is written, we can
32 ;; assume that we are never called with nvals == 1 and that a0 has already
35 (inst ble default-a0-and-on)
36 (inst cmpwi nvals (fixnumize 2))
37 (inst lwz a1 vals (* 1 n-word-bytes))
38 (inst ble default-a2-and-on)
39 (inst cmpwi nvals (fixnumize 3))
40 (inst lwz a2 vals (* 2 n-word-bytes))
41 (inst ble default-a3-and-on)
42 (inst cmpwi nvals (fixnumize 4))
43 (inst lwz a3 vals (* 3 n-word-bytes))
46 ;; Copy the remaining args to the top of the stack.
47 (inst addi src vals (* 4 n-word-bytes))
48 (inst addi dst cfp-tn (* 4 n-word-bytes))
49 (inst addic. count nvals (- (fixnumize 4)))
52 (inst subic. count count (fixnumize 1))
54 (inst addi src src n-word-bytes)
56 (inst addi dst dst n-word-bytes)
73 (inst add csp-tn ocfp-tn nvals)
76 (lisp-return lra lip))
80 ;;;; tail-call-variable.
82 #+sb-assembling ;; no vop for this one either.
83 (define-assembly-routine
85 (:return-style :none))
87 ;; These are really args.
88 ((:temp args any-reg nl0-offset)
89 (:temp lexenv descriptor-reg lexenv-offset)
91 ;; We need to compute this
92 (:temp nargs any-reg nargs-offset)
94 ;; These are needed by the blitting code.
95 (:temp src any-reg nl1-offset)
96 (:temp dst any-reg nl2-offset)
97 (:temp count any-reg nl3-offset)
98 (:temp temp descriptor-reg l0-offset)
99 (:temp lip interior-reg lip-offset)
101 ;; These are needed so we can get at the register args.
102 (:temp a0 descriptor-reg a0-offset)
103 (:temp a1 descriptor-reg a1-offset)
104 (:temp a2 descriptor-reg a2-offset)
105 (:temp a3 descriptor-reg a3-offset))
108 ;; Calculate NARGS (as a fixnum)
109 (inst sub nargs csp-tn args)
111 ;; Load the argument regs (must do this now, 'cause the blt might
112 ;; trash these locations)
113 (inst lwz a0 args (* 0 n-word-bytes))
114 (inst lwz a1 args (* 1 n-word-bytes))
115 (inst lwz a2 args (* 2 n-word-bytes))
116 (inst lwz a3 args (* 3 n-word-bytes))
118 ;; Calc SRC, DST, and COUNT
119 (inst addic. count nargs (fixnumize (- register-arg-count)))
120 (inst addi src args (* n-word-bytes register-arg-count))
122 (inst addi dst cfp-tn (* n-word-bytes register-arg-count))
126 (inst lwz temp src 0)
127 (inst addi src src n-word-bytes)
128 (inst stw temp dst 0)
129 (inst addic. count count (fixnumize -1))
130 (inst addi dst dst n-word-bytes)
134 ;; We are done. Do the jump.
135 (loadw temp lexenv closure-fun-slot fun-pointer-lowtag)
136 (lisp-jump temp lip))
140 ;;;; Non-local exit noise.
142 (define-assembly-routine (unwind
143 (:return-style :none)
144 (:translate %continue-unwind)
145 (:policy :fast-safe))
146 ((:arg block (any-reg descriptor-reg) a0-offset)
147 (:arg start (any-reg descriptor-reg) ocfp-offset)
148 (:arg count (any-reg descriptor-reg) nargs-offset)
149 (:temp lra descriptor-reg lra-offset)
150 (:temp lip interior-reg lip-offset)
151 (:temp cur-uwp any-reg nl0-offset)
152 (:temp next-uwp any-reg nl1-offset)
153 (:temp target-uwp any-reg nl2-offset))
154 (declare (ignore start count))
156 (let ((error (generate-error-code nil 'invalid-unwind-error)))
160 (load-tl-symbol-value cur-uwp *current-unwind-protect-block*)
161 (loadw target-uwp block unwind-block-current-uwp-slot)
162 (inst cmpw cur-uwp target-uwp)
169 (loadw cfp-tn cur-uwp unwind-block-current-cont-slot)
170 (loadw code-tn cur-uwp unwind-block-current-code-slot)
171 (loadw lra cur-uwp unwind-block-entry-pc-slot)
172 (lisp-return lra lip)
176 (loadw next-uwp cur-uwp unwind-block-current-uwp-slot)
177 (store-tl-symbol-value next-uwp *current-unwind-protect-block* cfp-tn)
180 (define-assembly-routine (throw
181 (:return-style :none))
182 ((:arg target descriptor-reg a0-offset)
183 (:arg start any-reg ocfp-offset)
184 (:arg count any-reg nargs-offset)
185 (:temp catch any-reg a1-offset)
186 (:temp tag descriptor-reg a2-offset))
188 (declare (ignore start count))
190 (load-tl-symbol-value catch *current-catch-block*)
194 (let ((error (generate-error-code nil 'unseen-throw-tag-error target)))
198 (loadw tag catch catch-block-tag-slot)
199 (inst cmpw tag target)
201 (loadw catch catch catch-block-previous-catch-slot)
208 (inst lr catch (make-fixup 'unwind :assembly-routine))