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Diffstat (limited to 'www/firefox3/files/xptcinvoke_asm_sparc64_netbsd.s')
| -rw-r--r-- | www/firefox3/files/xptcinvoke_asm_sparc64_netbsd.s | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/www/firefox3/files/xptcinvoke_asm_sparc64_netbsd.s b/www/firefox3/files/xptcinvoke_asm_sparc64_netbsd.s new file mode 100644 index 00000000000..c501f4fd7a4 --- /dev/null +++ b/www/firefox3/files/xptcinvoke_asm_sparc64_netbsd.s @@ -0,0 +1,112 @@ +/* -*- 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): + */ + +/* Platform specific code to invoke XPCOM methods on native objects */ + .global NS_InvokeByIndex_P + .type NS_InvokeByIndex_P, #function +/* + NS_InvokeByIndex_P(nsISupports* that, PRUint32 methodIndex, + PRUint32 paramCount, nsXPTCVariant* params); + +*/ +/* + * Note: To simplify stack handling we allocate an extra stack + * frame here. In principle invoke_copy_to_stack() could + * save the parameters our caller's frame and we could + * reclaim the stackframe and do a tail call to the + * function. However, this gets complicated.... + * + * The vtable consist of be: + * + * struct { + * short __delta; + * short __index; + * union { + * P __pfn; + * short __delta2; + * } __pfn_or_delta2; + * }; + * + * See gcc/cp/cp-tree.h + */ + +NS_InvokeByIndex_P: + save %sp,-(128 + 64),%sp ! room for the register window and + ! struct pointer, rounded up to 0 % 64 + sll %i2,4,%l0 ! assume the worst case + ! paramCount * 2 * 8 bytes + cmp %l0, 0 ! are there any args? If not, + be .invoke ! no need to copy args to stack + nop + + sub %sp,%l0,%sp ! create the additional stack space + add %sp,0x7ff+136,%o0 ! step past the register window, the + ! struct result pointer and the 'this' slot + mov %i2,%o1 ! paramCount + call invoke_copy_to_stack + mov %i3,%o2 ! params + +! +! load arguments from stack into the outgoing registers +! BIAS is 0x7ff (2047) +! + +! load the %o1..5 64bit (extended word) output registers registers + ldx [%sp + 0x7ff + 136],%o1 ! %i1 + ldx [%sp + 0x7ff + 144],%o2 ! %i2 + ldx [%sp + 0x7ff + 152],%o3 ! %i3 + ldx [%sp + 0x7ff + 160],%o4 ! %i4 + ldx [%sp + 0x7ff + 168],%o5 ! %i5 + +! load the even number double registers starting with %f2 + ldd [%sp + 0x7ff + 136],%f2 + ldd [%sp + 0x7ff + 144],%f4 + ldd [%sp + 0x7ff + 152],%f6 + ldd [%sp + 0x7ff + 160],%f8 + ldd [%sp + 0x7ff + 168],%f10 + ldd [%sp + 0x7ff + 176],%f12 + ldd [%sp + 0x7ff + 184],%f14 + ldd [%sp + 0x7ff + 192],%f16 + ldd [%sp + 0x7ff + 200],%f18 + ldd [%sp + 0x7ff + 208],%f20 + ldd [%sp + 0x7ff + 216],%f22 + ldd [%sp + 0x7ff + 224],%f24 + ldd [%sp + 0x7ff + 232],%f26 + ldd [%sp + 0x7ff + 240],%f28 + ldd [%sp + 0x7ff + 248],%f30 + +! +! calculate the target address from the vtable +! +.invoke: + sll %i1,3,%l0 ! index *= 8 + ldx [%i0],%l1 ! *this --> address of vtable + ldx [%l0 + %l1],%l0 ! this->vtable[index] --> address + + jmpl %l0,%o7 ! call the routine + mov %i0,%o0 ! move 'this' pointer to out register + + mov %o0,%i0 ! propagate return value + ret + restore + + .size NS_InvokeByIndex_P, .-NS_InvokeByIndex_P |