"
    Copyright (c) 2012-2016 Igor Stasenko
                            Martin McClure
                            Damien Pollet
                            Camillo Bruni
                            Guido Chari
                   2016-now Jan Vrany <jan.vrany [at] fit . cvut . cz>

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the 'Software'), to deal
    in the Software without restriction, including without limitation the rights
    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
"
"{ Package: 'jv:dragonfly/asm' }"

"{ NameSpace: Smalltalk }"

AJCallInfo subclass:#AJCdeclCallInfo
	instanceVariableNames:'savedSP'
	classVariableNames:''
	poolDictionaries:''
	category:'AsmJit-StackManagement'
!

!AJCdeclCallInfo class methodsFor:'documentation'!

copyright
"
    Copyright (c) 2012-2016 Igor Stasenko
                            Martin McClure
                            Damien Pollet
                            Camillo Bruni
                            Guido Chari
                   2016-now Jan Vrany <jan.vrany [at] fit . cvut . cz>

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the 'Software'), to deal
    in the Software without restriction, including without limitation the rights
    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.

"
! !

!AJCdeclCallInfo methodsFor:'accessing'!

defaultArgumentSize
    ^ 4
! !

!AJCdeclCallInfo methodsFor:'emitting code'!

alignedCleanup

    asm
        mov: savedSP to: asm ESP.
        
    asm releaseTemps: 1 "release our temp afterwards"  
!

emitAlignment
    | instructions |
    
    instructions := asm
        instructionsFor: [ 
            asm
                decorateWith: 'align stack'
                during: [ 
                    savedSP := asm reserveTemp annotation: 'saved SP'.
                    asm mov: asm ESP to: savedSP.
                    stackSize > 0
                        ifTrue: [ asm sub: asm ESP with: (stackSize asUImm annotation: 'stack size') ].
                    asm
                        and: asm ESP with: stackAlignment - 1;
                        neg: asm ESP;
                        add: asm ESP with: savedSP ] ].
    
    asm insert: instructions after: alignInsertionPoint.
    self emitCleanup
!

emitAlignmentIfNeeded
    | alignment |
    
    self needsAlignment
        ifTrue: [ ^ self emitAlignment ].
        
    self emitCleanup
!

emitCleanup
    noCleanup ifTrue: [ ^ self ].
    
    asm insert: 
    (
            asm instructionsFor: [
            self needsAlignment 
                ifTrue: [ self alignedCleanup ]
                ifFalse: [ self normalCleanup ]  			
        ]

    ) after: callCleanup
!

normalCleanup 
    stackSize > 0 ifTrue: [
        asm
            add: asm ESP with: stackSize 
    ]
! !