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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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131
xpcom/reflect/xptcall/md/unix/xptcinvoke_asm_pa32.s Normal file
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@ -0,0 +1,131 @@
.LEVEL 1.1
framesz .EQU 128
; XPTC_InvokeByIndex(nsISuppots* that, uint32_t methodIndex,
; uint32_t paramCount, nsXPTCVariant* params);
; g++ need to compile everything with -fvtable-thunks !
.SPACE $TEXT$,SORT=8
.SUBSPA $CODE$,QUAD=0,ALIGN=4,ACCESS=0x2c,CODE_ONLY,SORT=24
XPTC_InvokeByIndex
.PROC
.CALLINFO CALLER,FRAME=72,ENTRY_GR=%r3,SAVE_RP,SAVE_SP,ARGS_SAVED,ALLOCA_FRAME
; frame marker takes 48 bytes,
; register spill area takes 8 bytes,
; local stack area takes 72 bytes result in 128 bytes total
.ENTRY
STW %rp,-20(%sp)
STW,MA %r3,128(%sp)
LDO -framesz(%r30),%r28
STW %r28,-4(%r30) ; save previous sp
STW %r19,-32(%r30)
STW %r26,-36-framesz(%r30) ; save argument registers in
STW %r25,-40-framesz(%r30) ; in PREVIOUS frame
STW %r24,-44-framesz(%r30) ;
STW %r23,-48-framesz(%r30) ;
B,L .+8,%r2
ADDIL L'invoke_count_bytes-$PIC_pcrel$1+4,%r2,%r1
LDO R'invoke_count_bytes-$PIC_pcrel$2+8(%r1),%r1
$PIC_pcrel$1
LDSID (%r1),%r31
$PIC_pcrel$2
MTSP %r31,%sr0
.CALL ARGW0=GR,ARGW1=GR,ARGW2=GR ;in=24,25,26;out=28
BE,L 0(%sr0,%r1),%r31
COPY %r31,%r2
CMPIB,>= 0,%r28, .+76
COPY %r30,%r3 ; copy stack ptr to saved stack ptr
ADD %r30,%r28,%r30 ; extend stack frame
LDW -4(%r3),%r28 ; move frame
STW %r28,-4(%r30)
LDW -8(%r3),%r28
STW %r28,-8(%r30)
LDW -12(%r3),%r28
STW %r28,-12(%r30)
LDW -16(%r3),%r28
STW %r28,-16(%r30)
LDW -20(%r3),%r28
STW %r28,-20(%r30)
LDW -24(%r3),%r28
STW %r28,-24(%r30)
LDW -28(%r3),%r28
STW %r28,-28(%r30)
LDW -32(%r3),%r28
STW %r28,-32(%r30)
LDO -40(%r30),%r26 ; load copy address
LDW -44-framesz(%r3),%r25 ; load rest of 2 arguments
LDW -48-framesz(%r3),%r24 ;
LDW -32(%r30),%r19 ; shared lib call destroys r19; reload
B,L .+8,%r2
ADDIL L'invoke_copy_to_stack-$PIC_pcrel$3+4,%r2,%r1
LDO R'invoke_copy_to_stack-$PIC_pcrel$4+8(%r1),%r1
$PIC_pcrel$3
LDSID (%r1),%r31
$PIC_pcrel$4
MTSP %r31,%sr0
.CALL ARGW0=GR,ARGW1=GR,ARGW2=GR ;in=24,25,26
BE,L 0(%sr0,%r1),%r31
COPY %r31,%r2
LDO -48(%r30),%r20
EXTRW,U,= %r28,31,1,%r22
FLDD 0(%r20),%fr7 ; load double arg 1
EXTRW,U,= %r28,30,1,%r22
FLDW 8(%r20),%fr5L ; load float arg 1
EXTRW,U,= %r28,29,1,%r22
FLDW 4(%r20),%fr6L ; load float arg 2
EXTRW,U,= %r28,28,1,%r22
FLDW 0(%r20),%fr7L ; load float arg 3
LDW -36-framesz(%r3),%r26 ; load ptr to 'that'
LDW -40(%r30),%r25 ; load the rest of dispatch argument registers
LDW -44(%r30),%r24
LDW -48(%r30),%r23
LDW -36-framesz(%r3),%r20 ; load vtable addr
LDW -40-framesz(%r3),%r28 ; load index
LDW 0(%r20),%r20 ; follow vtable
LDO 16(%r20),%r20 ; offset vtable by 16 bytes (g++: 8, aCC: 16)
SH2ADDL %r28,%r20,%r28 ; add 4*index to vtable entry
LDW 0(%r28),%r22 ; load vtable entry
B,L .+8,%r2
ADDIL L'$$dyncall_external-$PIC_pcrel$5+4,%r2,%r1
LDO R'$$dyncall_external-$PIC_pcrel$6+8(%r1),%r1
$PIC_pcrel$5
LDSID (%r1),%r31
$PIC_pcrel$6
MTSP %r31,%sr0
.CALL ARGW0=GR,ARGW1=GR,ARGW2=GR,ARGW3=GR,RTNVAL=GR
;in=22-26;out=28;
BE,L 0(%sr0,%r1),%r31
COPY %r31,%r2
LDW -32(%r30),%r19
COPY %r3,%r30 ; restore saved stack ptr
LDW -148(%sp),%rp
BVE (%rp)
.EXIT
LDW,MB -128(%sp),%r3
.PROCEND ;in=23,24,25,26;
.ALIGN 8
.SPACE $TEXT$
.SUBSPA $CODE$
.IMPORT $$dyncall_external,MILLICODE
.IMPORT invoke_count_bytes,CODE
.IMPORT invoke_copy_to_stack,CODE
.EXPORT XPTC_InvokeByIndex,ENTRY,PRIV_LEV=3,ARGW0=GR,ARGW1=GR,ARGW2=GR,ARGW3=GR,RTNVAL=GR,LONG_RETURN
.END