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// Copyright (c) 1998 Albrecht Kleine All rights reserved
// file version #300
#define TYAASM_S
#include "tyaconfig.h"
#include "tya.h"
#undef TYAASM_S
.text
#ifdef USEASM
.globl FastInvPrepare
//
// this looks from C side as follows:
//
// void* FastInvPrepare(struct execenv *ee,struct methodblock *mbpcalled,stack_item *sp);
// = ecx = eax = 12(%esp)
//
.type FastInvPrepare,@function
.align 16
FastInvPrepare:
movl CFR_OFF(%ecx),%edx // cfr
leal 44(%edx),%ebx // new JF
//
// if ((char*)JF > (char*)ee->current_frame->javastack->end_data)
// StOvExcHandler();
//
movl 20(%edx),%edx // cfr->jstc
//
movl 12(%edx),%edx // end_data @ 12
subl $100,%edx
cmpl %ebx,%edx
movl CFR_OFF(%ecx),%edx // == ee->current_frame
//
jb .FICheckStackOver // stackoverflow handling
// ====== ebx is the desired new JF ========
movl %edx,16(%ebx) // JF->prev=ee->current_frame;
movl 20(%edx),%edx //
movl %eax,28(%ebx) // JF->current_method=mbpcalled;
movl %edx,20(%ebx) // JF->javastack=ee->current_frame->javastack;
leal 40(%ebx),%edx //
movl %edx,8(%ebx) // JF->optop=JF->ostack;
movl 12(%esp),%edx // == stack_item *sp
movl %edx,12(%ebx) // JF->vars=sp;
movl %ebx,CFR_OFF(%ecx) // ee->current_frame=JF
movl 16(%ebx),%ebx // == now the prev frame
ret
.globl FastInvCheck32,FastInvNoCheck32
//
// this looks from C side as follows:
//
// void* FastInvCheck(struct execenv *ee,struct methodblock *mbpcalled,stack_item *sp);
// = ecx = eax = 12(%esp)
//
.type FastInvCheck32,@function
.align 16
FastInvCheck32:
movl 68(%eax),%edx
testl %edx,%edx
je FICheck32_2
FastInvNoCheck32:
movl CFR_OFF(%ecx),%edx // cfr
leal 44(%edx),%ebx // new JF
//
// if ((char*)JF > (char*)ee->current_frame->javastack->end_data)
// StOvExcHandler();
//
movl 20(%edx),%edx // cfr->jstc
//// OLD: cmpl %ebx,12(%edx) // end_data @ 12
//
movl 12(%edx),%edx // end_data @ 12
subl $100,%edx
cmpl %ebx,%edx
movl CFR_OFF(%ecx),%edx // == ee->current_frame
//
jb .FICheckStackOver // stackoverflow handling
// ====== ebx is the desired new JF ========
movl %edx,16(%ebx) // JF->prev=ee->current_frame;
movl 20(%edx),%edx //
movl %eax,28(%ebx) // JF->current_method=mbpcalled;
movl %edx,20(%ebx) // JF->javastack=ee->current_frame->javastack;
leal 40(%ebx),%edx //
movl %edx,8(%ebx) // JF->optop=JF->ostack;
movl 12(%esp),%edx // == stack_item *sp
movl %edx,12(%ebx) // JF->vars=sp;
movw LV_OFF(%eax),%edx // current_method->nlocals in lower 16 bit
movl %ebx,CFR_OFF(%ecx) // ee->current_frame=JF
//
shll $16,%edx
movl 68(%eax),%eax // == compiled code
shrl $14,%edx // shl,shr is for mul 4
//
movl 16(%ebx),%ebx // == now the prev frame
ret
// returning:
// eax is mbpcalled->CompiledCode / ecx is ee / ebx is ee->current_frame->prev
//
// JF++;
// JF->vars=sp;
// JF->prev=ee->current_frame;
// JF->current_method=mbpcalled;
// JF->javastack=ee->current_frame->javastack;
// JF->optop=JF->ostack;
// ee->current_frame=JF;
//
.align 16
FICheck32_2:
#ifndef JDK12
testb $1,17(%eax) // this is ACC_NATIVE's hibyte
#else
testb $1,13(%eax) // this is ACC_NATIVE's hibyte
#endif
jne FICheck32_3
pushl %ecx
pushl %eax
call JITCompileMethod
testl %eax,%eax
popl %eax
popl %ecx
jne FastInvNoCheck32
FICheck32_3:
movl CFR_OFF(%ecx),%ebx
movl $CodeRunner32_withDummies,%eax
movl $0,%edx
ret
/////////////////////////////////////////////////////////////////
.globl FastInvCheck64,FastInvNoCheck64
.type FastInvCheck64,@function
.align 16
FastInvCheck64:
movl 68(%eax),%edx
testl %edx,%edx
je FICheck64_2
FastInvNoCheck64:
movl CFR_OFF(%ecx),%edx // cfr
leal 44(%edx),%ebx // new JF
//
// if ((char*)JF > (char*)ee->current_frame->javastack->end_data)
// StOvExcHandler();
//
movl 20(%edx),%edx // cfr->jstc
//// OLD: cmpl %ebx,12(%edx) // end_data @ 12
//
movl 12(%edx),%edx // end_data @ 12
subl $100,%edx
cmpl %ebx,%edx
movl CFR_OFF(%ecx),%edx // == ee->current_frame
//
jb .FICheckStackOver // stackoverflow handling
//
movl %edx,16(%ebx)
movl 20(%edx),%edx
movl %eax,28(%ebx) // JF->current_method=mbpcalled;
movl %edx,20(%ebx)
leal 40(%ebx),%edx
movl %edx,8(%ebx) // ebx is ee->current_frame
movl 12(%esp),%edx // == stack_item *sp
movl %edx,12(%ebx)
movw LV_OFF(%eax),%edx // we need (short) current_method->nlocals
movl %ebx,CFR_OFF(%ecx) // ee->current_frame=JF
//
shll $16,%edx
movl 68(%eax),%eax // == compiled code
//
shrl $14,%edx
movl 16(%ebx),%ebx // ...->prev [ also via subl $44,%ebx ]
ret
// returning:
// eax is mbpcalled->CompiledCode / ecx is ee / ebx is ee->current_frame->prev
//
// JF++;
// JF->vars=sp;
// JF->prev=ee->current_frame;
// JF->current_method=mbpcalled;
// JF->javastack=ee->current_frame->javastack;
// JF->optop=JF->ostack;
// ee->current_frame=JF;
//
.align 16
FICheck64_2:
#ifndef JDK12
testb $1,17(%eax) // this is ACC_NATIVE's hibyte
#else
testb $1,13(%eax) // this is ACC_NATIVE's hibyte
#endif
jne FICheck64_3
pushl %ecx
pushl %eax
call JITCompileMethod
testl %eax,%eax
popl %eax
popl %ecx
jne FastInvNoCheck64
FICheck64_3:
movl $CodeRunner64_withDummies,%eax
movl CFR_OFF(%ecx),%ebx
movl $0,%edx
ret
//////////////////////////////////////////////////////////////
//FIXME12
// special stack overflow handling: similar above, but not the same.....
// jmp'd by all FastInvCheckXX if no more space on Java stack condition
.align 16
.FICheckStackOver:
movl 20(%edx),%edx // cfr->jstc
cmpl $TYA_JSTACK,16(%edx)// stack_so_far @ 16 compared with max (def. in tya.h)
jb .FICSOver1
call StOvExcHandler
.FICSOver1:
pushl %eax // save mbp
movl 8(%edx),%eax // edx this_stack, eax nextstack
testl %eax,%eax
jnz nextstack
#ifdef JDK12
pushl min_javastack_chunk_size
#endif
pushl %edx // prev stac
pushl %ecx // ee
call CreateNewJavaStack
popl %ecx
popl %edx
#ifdef JDK12
popl %ebx // dummy
#endif
nextstack:
// eax = new stack
leal 20(%eax),%ebx // data @ 20
// ====== ebx is the desired new JF ========
movl 16(%esp),%edx // == stack_item *sp
/* ==16 because pushax above */
movl %edx,12(%ebx) // JF->vars=sp;
movl CFR_OFF(%ecx),%edx //
movl %edx,16(%ebx) // JF->prev=ee->current_frame;
movl %eax,20(%ebx) // JF->javastack=NEW_created_java_stack;
//
popl %eax // restore mbp
movl %eax,28(%ebx) // JF->current_method=mbpcalled;
leal 40(%ebx),%edx //
movl %edx,8(%ebx) // JF->optop=JF->ostack;
movl %ebx,CFR_OFF(%ecx) // ee->current_frame=JF
//
movzwl LV_OFF(%eax),%edx // (short) current_method->nlocals
shll $2,%edx // * 4
movl 68(%eax),%eax // == compiled code
//
movl 16(%ebx),%ebx // == now the prev frame
ret
#endif
//////////////////////////////////////////////////////////////
#ifdef USEASM
#ifdef INIT0
.align 16
.globl MyObjAlloc
.type MyObjAlloc,@function
MyObjAlloc:
// expecting class in eax
pushl $0
pushl %eax
call ObjAlloc
popl %ebx
popl %ecx
testl %eax,%eax
je .MyObjAlloc2
movl (%ebx),%edx // unhand(class)
movl %edi,%ebx // save edi
movl (%eax),%edi // unhand(object)
movzwl 84(%edx),%ecx
movl %eax,%edx
shrl $0x2,%ecx
xorl %eax,%eax
cld
rep
stosl %es:(%edi)
movl %edx,%eax
movl %ebx,%edi // restore edi
ret
.MyObjAlloc2:
jmp out_of_memory
#endif
#endif
//////////////////////////////////////////////////////////////
.align 16
.globl StOvExcHandler
.type StOvExcHandler,@function
StOvExcHandler:
#ifndef USEASM
movl %ebp,%esp // discard caller's C stack frame
popl %ebp // for access to stack pointer
#endif
call EE
pushl StOvExc // params for ExecExcep
pushl %eax
jmp SEH1 // exc is not catchable inside method
/////////////////////////////////////////////////////////////
.align 16
.globl SimpleExcHandler
.type SimpleExcHandler,@function
SimpleExcHandler:
pushl %eax // expecting in eax: ExcObject
movl (LOCSTART-16)(%ebp),%edx // get EE into ecx
pushl %edx
SEH1:
call ExecExcep
movl %ebp,%esp // standard epilog
popl %ebp
popl %edi
popl %esi
popl %ebx
ret
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