(inst cmp ecx (fixnumize 3))
(inst jmp :e THREE-VALUES)
- (inst mov ebx rbp-tn)
- ;; Save the count, because the loop is going to destroy it.
+ ;; As per the calling convention EBX is expected to point at the SP
+ ;; before the stack frame.
+ (inst lea ebx (make-ea :qword :base rbp-tn
+ :disp (* sp->fp-offset n-word-bytes)))
+
+ ;; Save the count, the return address and restore the frame pointer,
+ ;; because the loop is going to destroy them.
(inst mov edx ecx)
(inst mov eax (make-ea :qword :base rbp-tn
:disp (frame-byte-offset return-pc-save-offset)))
;; Handle the register arg cases.
ZERO-VALUES
- (inst mov ebx rbp-tn)
+ (inst lea ebx (make-ea :qword :base rbp-tn
+ :disp (* sp->fp-offset n-word-bytes)))
(inst mov edx nil-value)
(inst mov edi edx)
(inst mov esi edx)
- (inst lea rsp-tn
- (make-ea :qword :base ebx
- :disp (frame-byte-offset ocfp-save-offset)))
+ (inst mov rsp-tn rbp-tn)
(inst stc)
(inst pop rbp-tn)
(inst ret)
;; check for this case when size > speed.
ONE-VALUE
(loadw edx esi -1)
- (inst lea rsp-tn
- (make-ea :qword :base rbp-tn
- :disp (frame-byte-offset ocfp-save-offset)))
+ (inst mov rsp-tn rbp-tn)
(inst clc)
(inst pop rbp-tn)
(inst ret)
TWO-VALUES
- (inst mov ebx rbp-tn)
+ (inst lea ebx (make-ea :qword :base rbp-tn
+ :disp (* sp->fp-offset n-word-bytes)))
(loadw edx esi -1)
(loadw edi esi -2)
(inst mov esi nil-value)
- (inst lea rsp-tn
- (make-ea :qword :base ebx
- :disp (frame-byte-offset ocfp-save-offset)))
+ (inst mov rsp-tn rbp-tn)
(inst stc)
(inst pop rbp-tn)
(inst ret)
THREE-VALUES
- (inst mov ebx rbp-tn)
+ (inst lea ebx (make-ea :qword :base rbp-tn
+ :disp (* sp->fp-offset n-word-bytes)))
(loadw edx esi -1)
(loadw edi esi -2)
(loadw esi esi -3)
- (inst lea rsp-tn
- (make-ea :qword :base ebx
- :disp (frame-byte-offset ocfp-save-offset)))
+ (inst mov rsp-tn rbp-tn)
(inst stc)
(inst pop rbp-tn)
(inst ret))
;; Clear most of the stack.
(inst lea rsp-tn
- (make-ea :qword :base rbp-tn :disp (* -3 n-word-bytes)))
+ (make-ea :qword :base rbp-tn :disp (* (- sp->fp-offset 3) n-word-bytes)))
;; Push the return-pc so it looks like we just called.
(pushw rbp-tn (frame-word-offset return-pc-save-offset))
fun-pointer-lowtag))))
\f
(define-assembly-routine (throw
- (:return-style :none))
+ (:return-style :raw))
((:arg target (descriptor-reg any-reg) rdx-offset)
(:arg start any-reg rbx-offset)
(:arg count any-reg rcx-offset)
LOOP
- (let ((error (generate-error-code nil 'unseen-throw-tag-error target)))
+ (let ((error (gen-label)))
+ (assemble (*elsewhere*)
+ (emit-label error)
+
+ ;; Fake up a stack frame so that backtraces come out right.
+ (inst push rbp-tn)
+ (inst mov rbp-tn rsp-tn)
+
+ (emit-error-break nil error-trap
+ (error-number-or-lose 'unseen-throw-tag-error)
+ (list target)))
(inst or catch catch) ; check for NULL pointer
(inst jmp :z error))