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/*
* Copyright (C)2005-2017 Haxe Foundation
*
* 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.
*/
#include <string.h>
#include "neko.h"
#include "objtable.h"
#include "vm.h"
#include "neko_mod.h"
#define MAXCALLS 350
typedef value (*c_prim0)();
typedef value (*c_prim1)(value);
typedef value (*c_prim2)(value,value);
typedef value (*c_prim3)(value,value,value);
typedef value (*c_prim4)(value,value,value,value);
typedef value (*c_prim5)(value,value,value,value,value);
typedef value (*c_primN)(value*,int);
typedef value (*jit_prim)( neko_vm *, void *, value, neko_module * );
extern void neko_setup_trap( neko_vm *vm );
extern void neko_process_trap( neko_vm *vm );
extern int neko_stack_expand( int_val *sp, int_val *csp, neko_vm *vm );
extern char *jit_boot_seq;
EXTERN value val_callEx( value vthis, value f, value *args, int nargs, value *exc ) {
neko_vm *vm = NEKO_VM();
value old_this = vm->vthis;
value old_env = vm->env;
value ret = val_null;
jmp_buf oldjmp;
if( vthis != NULL )
vm->vthis = vthis;
if( exc ) {
memcpy(&oldjmp,&vm->start,sizeof(jmp_buf));
if( setjmp(vm->start) ) {
*exc = vm->vthis;
neko_process_trap(vm);
vm->vthis = old_this;
vm->env = old_env;
memcpy(&vm->start,&oldjmp,sizeof(jmp_buf));
return val_null;
}
neko_setup_trap(vm);
}
if( (uintptr_t)&vm < (uintptr_t)vm->c_stack_max )
val_throw(alloc_string("C Stack Overflow"));
if( val_is_int(f) )
val_throw(alloc_string("Invalid call"));
if( val_tag(f) == VAL_PRIMITIVE ) {
vm->env = ((vfunction *)f)->env;
if( nargs == ((vfunction*)f)->nargs ) {
if( nargs > CALL_MAX_ARGS )
failure("Too many arguments for a call");
switch( nargs ) {
case 0:
ret = ((c_prim0)((vfunction*)f)->addr)();
break;
case 1:
ret = ((c_prim1)((vfunction*)f)->addr)(args[0]);
break;
case 2:
ret = ((c_prim2)((vfunction*)f)->addr)(args[0],args[1]);
break;
case 3:
ret = ((c_prim3)((vfunction*)f)->addr)(args[0],args[1],args[2]);
break;
case 4:
ret = ((c_prim4)((vfunction*)f)->addr)(args[0],args[1],args[2],args[3]);
break;
case 5:
ret = ((c_prim5)((vfunction*)f)->addr)(args[0],args[1],args[2],args[3],args[4]);
break;
}
} else if( ((vfunction*)f)->nargs == -1 )
ret = (value)((c_primN)((vfunction*)f)->addr)(args,nargs);
else
val_throw(alloc_string("Invalid call"));
if( ret == NULL )
val_throw( (value)((vfunction*)f)->module );
} else if( val_short_tag(f) == VAL_FUNCTION ) {
if( nargs == ((vfunction*)f)->nargs ) {
int n;
if( vm->csp + 4 >= vm->sp - nargs && !neko_stack_expand(vm->sp,vm->csp,vm) ) {
if( exc ) {
neko_process_trap(vm);
memcpy(&vm->start,&oldjmp,sizeof(jmp_buf));
}
failure("Stack Overflow");
} else {
for(n=0;n<nargs;n++)
*--vm->sp = (int_val)args[n];
vm->env = ((vfunction*)f)->env;
if( val_tag(f) == VAL_FUNCTION ) {
*++vm->csp = (int_val)callback_return;
*++vm->csp = 0;
*++vm->csp = 0;
*++vm->csp = 0;
ret = neko_interp(vm,((vfunction*)f)->module,(int_val)val_null,(int_val*)((vfunction*)f)->addr);
} else {
neko_module *m = (neko_module*)((vfunction*)f)->module;
ret = ((jit_prim)jit_boot_seq)(vm,((vfunction*)f)->addr,val_null,m);
}
}
}
else
val_throw(alloc_string("Invalid call"));
} else
val_throw(alloc_string("Invalid call"));
if( exc ) {
neko_process_trap(vm);
memcpy(&vm->start,&oldjmp,sizeof(jmp_buf));
}
vm->vthis = old_this;
vm->env = old_env;
return ret;
}
EXTERN value val_callN( value f, value *args, int nargs ) {
return val_callEx(NULL,f,args,nargs,NULL);
}
EXTERN value val_ocallN( value o, field f, value *args, int nargs ) {
return val_callEx(o,val_field(o,f),args,nargs,NULL);
}
EXTERN value val_call0( value f ) {
return val_callN(f,NULL,0);
}
EXTERN value val_call1( value f, value v ) {
return val_callN(f,&v,1);
}
EXTERN value val_call2( value f, value v1, value v2 ) {
value args[2] = { v1, v2 };
return val_callN(f,args,2);
}
EXTERN value val_call3( value f, value arg1, value arg2, value arg3 ) {
value args[3] = { arg1, arg2, arg3 };
return val_callN(f,args,3);
}
EXTERN value val_ocall0( value o, field f ) {
return val_ocallN(o,f,NULL,0);
}
EXTERN value val_ocall1( value o, field f, value arg ) {
return val_ocallN(o,f,&arg,1);
}
EXTERN value val_ocall2( value o, field f, value arg1, value arg2 ) {
value args[2] = { arg1, arg2 };
return val_ocallN(o,f,args,2);
}
EXTERN value val_this() {
return (value)NEKO_VM()->vthis;
}
/* ************************************************************************ */
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