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xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_ppc_aix.s@b8a032363ba2 (annotated)

xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_ppc_aix.s

Thu, 22 Jan 2015 13:21:57 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 22 Jan 2015 13:21:57 +0100

branch

TOR_BUG_9701

changeset 15

b8a032363ba2

permissions

-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

michael@0	1	#
michael@0	2	# -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0	3	#
michael@0	4	# This Source Code Form is subject to the terms of the Mozilla Public
michael@0	5	# License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	6	# file, You can obtain one at http://mozilla.org/MPL/2.0/.
michael@0	7
michael@0	8	.set r0,0; .set sp,1; .set RTOC,2; .set r3,3; .set r4,4
michael@0	9	.set r5,5; .set r6,6; .set r7,7; .set r8,8; .set r9,9
michael@0	10	.set r10,10; .set r11,11; .set r12,12; .set r13,13; .set r14,14
michael@0	11	.set r15,15; .set r16,16; .set r17,17; .set r18,18; .set r19,19
michael@0	12	.set r20,20; .set r21,21; .set r22,22; .set r23,23; .set r24,24
michael@0	13	.set r25,25; .set r26,26; .set r27,27; .set r28,28; .set r29,29
michael@0	14	.set r30,30; .set r31,31
michael@0	15	.set f0,0; .set f1,1; .set f2,2; .set f3,3; .set f4,4
michael@0	16	.set f5,5; .set f6,6; .set f7,7; .set f8,8; .set f9,9
michael@0	17	.set f10,10; .set f11,11; .set f12,12; .set f13,13; .set f14,14
michael@0	18	.set f15,15; .set f16,16; .set f17,17; .set f18,18; .set f19,19
michael@0	19	.set f20,20; .set f21,21; .set f22,22; .set f23,23; .set f24,24
michael@0	20	.set f25,25; .set f26,26; .set f27,27; .set f28,28; .set f29,29
michael@0	21	.set f30,30; .set f31,31
michael@0	22	.set BO_IF,12
michael@0	23	.set CR0_EQ,2
michael@0	24
michael@0	25
michael@0	26
michael@0	27	.rename H.10.NO_SYMBOL{PR},""
michael@0	28	.rename H.18.NS_InvokeByIndex{TC},"NS_InvokeByIndex"
michael@0	29
michael@0	30
michael@0	31	# .text section
michael@0	32
michael@0	33	.csect H.10.NO_SYMBOL{PR}
michael@0	34	.globl .NS_InvokeByIndex
michael@0	35	.globl NS_InvokeByIndex{DS}
michael@0	36	.extern .invoke_copy_to_stack
michael@0	37	.extern ._ptrgl{PR}
michael@0	38
michael@0	39
michael@0	40	#
michael@0	41	# NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex,
michael@0	42	# uint32_t paramCount, nsXPTCVariant* params)
michael@0	43	#
michael@0	44
michael@0	45	.NS_InvokeByIndex:
michael@0	46	mflr r0
michael@0	47	stw r31,-4(sp)
michael@0	48	#
michael@0	49	# save off the incoming values in the caller's parameter area
michael@0	50	#
michael@0	51	stw r3,24(sp) # that
michael@0	52	stw r4,28(sp) # methodIndex
michael@0	53	stw r5,32(sp) # paramCount
michael@0	54	stw r6,36(sp) # params
michael@0	55	stw r0,8(sp)
michael@0	56	stwu sp,-136(sp) # = 24 for linkage area, 8 * 13 for fprData area, 8 for saved registers
michael@0	57
michael@0	58	# prepare args for 'invoke_copy_to_stack' call
michael@0	59	#
michael@0	60	lwz r4,168(sp) # paramCount
michael@0	61	lwz r5,172(sp) # params
michael@0	62	mr r6,sp # fprData
michael@0	63	slwi r3,r4,3 # number of bytes of stack required
michael@0	64	# at most 8*paramCount
michael@0	65	addi r3,r3,28 # linkage area
michael@0	66	mr r31,sp # save original stack top
michael@0	67	subfc sp,r3,sp # bump the stack
michael@0	68	addi r3,sp,28 # parameter pointer excludes linkage area size + 'this'
michael@0	69
michael@0	70	bl .invoke_copy_to_stack
michael@0	71	nop
michael@0	72
michael@0	73	lfd f1,0(r31) # Restore floating point registers
michael@0	74	lfd f2,8(r31)
michael@0	75	lfd f3,16(r31)
michael@0	76	lfd f4,24(r31)
michael@0	77	lfd f5,32(r31)
michael@0	78	lfd f6,40(r31)
michael@0	79	lfd f7,48(r31)
michael@0	80	lfd f8,56(r31)
michael@0	81	lfd f9,64(r31)
michael@0	82	lfd f10,72(r31)
michael@0	83	lfd f11,80(r31)
michael@0	84	lfd f12,88(r31)
michael@0	85	lfd f13,96(r31)
michael@0	86
michael@0	87	lwz r3,160(r31) # that
michael@0	88	lwz r4,0(r3) # get vTable from 'that'
michael@0	89	lwz r5,164(r31) # methodIndex
michael@0	90	slwi r5,r5,3 # methodIndex * 8
michael@0	91	addi r5,r5,8 # step over junk at start of vTable !
michael@0	92	lwzx r11,r5,r4 # get function pointer
michael@0	93
michael@0	94	addi r5,r5,4 # We need to manually adjust the 'that' pointer, this is CFRONT based
michael@0	95	lwzx r5,r4,r5 # offset = r4(vtable) + r5(methodIndex offset) - 4
michael@0	96	add r3,r5,r3 # adjust 'that' r3 = r3 + r5
michael@0	97
michael@0	98	lwz r4,28(sp)
michael@0	99	lwz r5,32(sp)
michael@0	100	lwz r6,36(sp)
michael@0	101	lwz r7,40(sp)
michael@0	102	lwz r8,44(sp)
michael@0	103	lwz r9,48(sp)
michael@0	104	lwz r10,52(sp)
michael@0	105
michael@0	106	bl ._ptrgl{PR}
michael@0	107	nop
michael@0	108
michael@0	109	mr sp,r31
michael@0	110	lwz r0,144(sp)
michael@0	111	addi sp,sp,136
michael@0	112	mtlr r0
michael@0	113	lwz r31,-4(sp)
michael@0	114	blr
michael@0	115
michael@0	116
michael@0	117	# .data section
michael@0	118
michael@0	119	.toc # 0x00000038
michael@0	120	T.18.NS_InvokeByIndex:
michael@0	121	.tc H.18.NS_InvokeByIndex{TC},NS_InvokeByIndex{DS}
michael@0	122
michael@0	123	.csect NS_InvokeByIndex{DS}
michael@0	124	.long .NS_InvokeByIndex # "\0\0\0\0"
michael@0	125	.long TOC{TC0} # "\0\0\0008"
michael@0	126	.long 0x00000000 # "\0\0\0\0"
michael@0	127	# End csect NS_InvokeByIndex{DS}
michael@0	128
michael@0	129	# .bss section