diff options
Diffstat (limited to 'src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_openvms_alpha.s')
| -rw-r--r-- | src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_openvms_alpha.s | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_openvms_alpha.s b/src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_openvms_alpha.s new file mode 100644 index 00000000..d37a91d2 --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_openvms_alpha.s @@ -0,0 +1,99 @@ +;* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- +;* +;* The contents of this file are subject to the Netscape Public +;* License Version 1.1 (the "License"); you may not use this file +;* except in compliance with the License. You may obtain a copy of +;* the License at http://www.mozilla.org/NPL/ +;* +;* Software distributed under the License is distributed on an "AS +;* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or +;* implied. See the License for the specific language governing +;* rights and limitations under the License. +;* +;* The Original Code is mozilla.org code. +;* +;* The Initial Developer of the Original Code is Netscape +;* Communications Corporation. Portions created by Netscape are +;* Copyright (C) 1998 Netscape Communications Corporation. All +;* Rights Reserved. +;* +;* Contributor(s): +;*/ + +; +; XPTC_PUBLIC_API(nsresult) +; XPTC_InvokeByIndex(nsISupports* that, PRUint32 methodIndex, +; PRUint32 paramCount, nsXPTCVariant* params) +; + + .title "INVOKE" "Invoke By Index" + + $routine XPTC_InvokeByIndex, kind=stack, saved_regs=<R2,R3,R4> + + mov r27,r2 ; Need to set up a base register... + .base r2,$LS ; ...for the LINKAGE_PAIR call + + mov r17,r3 ; save methodIndex in r3 + mov r18,r4 ; save paramCount in r4 + +; +; Allocate enough stack space to hold the greater of 6 or "paramCount"+1 +; parameters. (+1 for "this" pointer) Room for at least 6 parameters +; is required for storage of those passed via registers. +; + + cmplt R18,5,R1 ; paramCount = MAX(5, "paramCount") + cmovne R1,5,R18 + s8addq R18,16,R1 ; room for "paramCount"+1 params (8 bytes each) + bic R1,15,R1 ; stack space is rounded up to 0 % 16 + subq SP,R1,SP + + stq R16,0(SP) ; save "that" (as "this" pointer) + addq SP,8,R16 ; pass stack pointer + mov R4,R17 ; pass original "paramCount + mov R19,R18 ; pass "params" + mov 4,r25 ; argument count + + $LINKAGE_PAIR invoke_copy_to_stack + ldq r26,$LP ; get entry point address from linkage pair + ldq r27,$LP+8 ; get procedure descriptor address from lp + jsr r26,r26 ; and call the routine + +; +; Copy the first 6 parameters to registers and remove from stack frame. +; Both the integer and floating point registers are set for each parameter +; except the first which is the "this" pointer. (integer only) +; The floating point registers are all set as doubles since the +; invoke_copy_to_stack function should have converted the floats. +; + ldq R16,0(SP) ; integer registers + ldq R17,8(SP) + ldq R18,16(SP) + ldq R19,24(SP) + ldq R20,32(SP) + ldq R21,40(SP) + ldt F17,8(SP) ; floating point registers + ldt F18,16(SP) + ldt F19,24(SP) + ldt F20,32(SP) + ldt F21,40(SP) + + addq SP,48,SP ; remove params from stack + +; +; Call the virtual function with the constructed stack frame. +; First three methods are always QueryInterface, AddRef and Release. +; + addq r4,1,r25 ; argument count now includes "this" + mov R16,R1 ; load "this" + ldl R1,0(R1) ; load vtable + s4addq r3,0,r28 ; vtable index = "methodIndex" * 4 + addq r1,r28,r1 + ldl r27,0(r1) ; load procedure value + ldq r26,8(r27) ; load entry point address + jsr r26,r26 ; call virtual function + + $return + + $end_routine XPTC_InvokeByIndex + .end |