3 ;;;; Return-multiple with other than one value
5 #+sb-assembling ;; we don't want a vop for this one.
6 (define-assembly-routine
9 ;; These four are really arguments.
10 ((:temp nvals any-reg nargs-offset)
11 (:temp vals any-reg nl0-offset)
12 (:temp ocfp any-reg nl1-offset)
13 (:temp lra descriptor-reg lra-offset)
14 ;; These are just needed to facilitate the transfer
15 (:temp count any-reg nl2-offset)
16 (:temp dst any-reg nl3-offset)
17 (:temp temp descriptor-reg l0-offset)
18 ;; These are needed so we can get at the register args.
19 (:temp a0 descriptor-reg a0-offset)
20 (:temp a1 descriptor-reg a1-offset)
21 (:temp a2 descriptor-reg a2-offset)
22 (:temp a3 descriptor-reg a3-offset)
23 (:temp a4 descriptor-reg a4-offset)
24 (:temp a5 descriptor-reg a5-offset))
25 ;; Note, because of the way the return-multiple vop is written, we can
26 ;; assume that we are never called with nvals == 1 and that a0 has already
27 ;; been loaded. ;FIX-lav: look at old hppa , replace comb+addi with addib
28 (inst comb :<= nvals zero-tn DEFAULT-A0-AND-ON)
29 (inst addi (- (fixnumize 2)) nvals count)
30 (inst comb :<= count zero-tn DEFAULT-A2-AND-ON)
31 (inst ldw (* 1 n-word-bytes) vals a1)
32 (inst addib :<= (- (fixnumize 1)) count DEFAULT-A3-AND-ON)
33 (inst ldw (* 2 n-word-bytes) vals a2)
34 (inst addib :<= (- (fixnumize 1)) count DEFAULT-A4-AND-ON)
35 (inst ldw (* 3 n-word-bytes) vals a3)
36 (inst addib :<= (- (fixnumize 1)) count DEFAULT-A5-AND-ON)
37 (inst ldw (* 4 n-word-bytes) vals a4)
38 (inst addib :<= (- (fixnumize 1)) count done)
39 (inst ldw (* 5 n-word-bytes) vals a5)
40 ;; Copy the remaining args to the top of the stack.
41 (inst addi (fixnumize register-arg-count) vals vals)
42 (inst addi (fixnumize register-arg-count) cfp-tn dst)
44 (inst ldwm n-word-bytes vals temp)
45 (inst addib :<> (- (fixnumize 1)) count LOOP)
46 (inst stwm temp n-word-bytes dst)
47 (inst b DONE :nullify t)
64 (inst add ocfp-tn nvals csp-tn)
68 ;;;; tail-call-variable.
70 #+sb-assembling ;; no vop for this one either.
71 (define-assembly-routine
73 (:return-style :none))
74 ;; These are really args.
75 ((:temp args any-reg nl0-offset)
76 (:temp lexenv descriptor-reg lexenv-offset)
77 ;; We need to compute this
78 (:temp nargs any-reg nargs-offset)
79 ;; These are needed by the blitting code.
80 (:temp src any-reg nl1-offset)
81 (:temp dst any-reg nl2-offset)
82 (:temp count any-reg nl3-offset)
83 (:temp temp descriptor-reg l0-offset)
84 ;; These are needed so we can get at the register args.
85 (:temp a0 descriptor-reg a0-offset)
86 (:temp a1 descriptor-reg a1-offset)
87 (:temp a2 descriptor-reg a2-offset)
88 (:temp a3 descriptor-reg a3-offset)
89 (:temp a4 descriptor-reg a4-offset)
90 (:temp a5 descriptor-reg a5-offset))
91 ;; Calculate NARGS (as a fixnum)
92 (inst sub csp-tn args nargs)
93 ;; Load the argument regs (must do this now, 'cause the blt might
94 ;; trash these locations)
101 ;; Calc SRC, DST, and COUNT
102 (inst addi (- (fixnumize register-arg-count)) nargs count)
103 (inst comb :<= count zero-tn done)
104 (inst addi (fixnumize register-arg-count) args src)
105 (inst addi (fixnumize register-arg-count) cfp-tn dst)
107 ;; Copy one arg and increase src
108 (inst ldwm n-word-bytes src temp)
109 (inst addib :<> (- (fixnumize 1)) count LOOP)
110 (inst stwm temp n-word-bytes dst)
112 ;; We are done. Do the jump.
113 (loadw temp lexenv closure-fun-slot fun-pointer-lowtag)
117 ;;;; Non-local exit noise.
119 (define-assembly-routine
121 (:translate %continue-unwind)
122 (:return-style :none)
123 (:policy :fast-safe))
124 ((:arg block (any-reg descriptor-reg) a0-offset)
125 (:arg start (any-reg descriptor-reg) ocfp-offset)
126 (:arg count (any-reg descriptor-reg) nargs-offset)
127 (:temp lra descriptor-reg lra-offset)
128 (:temp cur-uwp any-reg nl0-offset)
129 (:temp next-uwp any-reg nl1-offset)
130 (:temp target-uwp any-reg nl2-offset))
131 (declare (ignore start count))
134 (let ((error (generate-error-code nil invalid-unwind-error)))
135 (inst bc := nil block zero-tn error))
137 (load-symbol-value cur-uwp *current-unwind-protect-block*)
138 (loadw target-uwp block unwind-block-current-uwp-slot)
139 (inst bc :<> nil cur-uwp target-uwp DO-UWP)
144 (loadw cfp-tn cur-uwp unwind-block-current-cont-slot)
145 (loadw code-tn cur-uwp unwind-block-current-code-slot)
146 (loadw lra cur-uwp unwind-block-entry-pc-slot)
147 (lisp-return lra :frob-code nil)
150 (loadw next-uwp cur-uwp unwind-block-current-uwp-slot)
152 (store-symbol-value next-uwp *current-unwind-protect-block*))
154 (define-assembly-routine
156 (:return-style :none))
157 ((:arg target descriptor-reg a0-offset)
158 (:arg start any-reg ocfp-offset)
159 (:arg count any-reg nargs-offset)
160 (:temp catch any-reg a1-offset)
161 (:temp tag descriptor-reg a2-offset)
162 (:temp fix descriptor-reg nl0-offset))
163 (declare (ignore start count)) ; We just need them in the registers.
165 (load-symbol-value catch *current-catch-block*)
168 (let ((error (generate-error-code nil unseen-throw-tag-error target)))
169 (inst bc := nil catch zero-tn error))
170 (loadw tag catch catch-block-tag-slot)
171 (inst comb := tag target EXIT :nullify t)
173 (loadw catch catch catch-block-previous-catch-slot)
175 (let ((fixup (make-fixup 'unwind :assembly-routine)))
176 (inst ldil fixup fix)
177 (inst ble fixup lisp-heap-space fix))
178 (move catch target t))
180 ; we need closure-tramp and funcallable-instance-tramp in
181 ; same space as other lisp-code, because caller is doing
182 ; normal lisp-calls where we doesnt specify space.
183 ; if we doesnt have the lisp-function (code from defun, closure, lambda etc..)
184 ; machine-address, resolve it here and jump to it.
185 (define-assembly-routine
186 (closure-tramp (:return-style :none))
187 ((:temp lip interior-reg lip-offset)
188 (:temp nl0 descriptor-reg nl0-offset))
189 (inst ldw (- (* fdefn-fun-slot n-word-bytes)
190 other-pointer-lowtag)
192 (inst ldw (- (* closure-fun-slot n-word-bytes)
195 (inst addi (- (* simple-fun-code-offset n-word-bytes)
198 (inst bv lip :nullify t))
200 (define-assembly-routine
201 (funcallable-instance-tramp (:return-style :none))
208 (inst ldw 3 lexenv-tn lexenv-tn)
209 (inst ldw (- (* closure-fun-slot n-word-bytes)
212 (inst addi (- (* simple-fun-code-offset n-word-bytes)
213 fun-pointer-lowtag) code-tn lip-tn)
214 (inst bv lip-tn :nullify t))
217 (define-assembly-routine
218 (return-from-lisp-stub (:return-style :none))
219 ((:temp lip interior-reg lip-offset)
220 (:temp nl0 descriptor-reg nl0-offset)
221 (:temp nl1 descriptor-reg nl1-offset)
222 (:temp lra descriptor-reg lra-offset))
223 ; before calling into lisp we must save our return address (reg_LRA)
224 (store-symbol-value lra *c-lra*)
225 ; note the lra we calculate next must "simulate" an fixnum,
226 ; because compute-calling-frame will use fixnump on this value.
227 ; either use 16 or 20, finetune it...
228 (inst addi 19 nl0 lra) ; then setup the new LRA (rest of this routine after branch)
229 (inst bv lip :nullify t)
230 (inst word return-pc-header-widetag)
231 ; ok, we are back from the lisp-call, lets return to c
232 ; FIX-lav: steal more stuff from call_into_lisp here, ideally the whole thing
233 (inst move ocfp-tn csp-tn) ; dont think we should ever get here
235 (load-symbol-value nl0 *c-lra*)
236 (inst addi 1 nl0 nl0)
237 (inst ble 0 c-text-space nl0 :nullify t))