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/***********************************************************************/
/* */
/* Coq Compiler */
/* */
/* Benjamin Gregoire, projets Logical and Cristal */
/* INRIA Rocquencourt */
/* */
/* */
/***********************************************************************/
#include <stdio.h>
#include <caml/memory.h>
#include "coq_fix_code.h"
#include "coq_instruct.h"
#include "coq_memory.h"
#include "coq_values.h"
#include <memory.h>
/* KIND OF VALUES */
#define Setup_for_gc
#define Restore_after_gc
value coq_kind_of_closure(value v) {
opcode_t * c;
int is_app = 0;
c = Code_val(v);
if (Is_instruction(c, GRAB)) return Val_int(0);
if (Is_instruction(c, RESTART)) {is_app = 1; c++;}
if (Is_instruction(c, GRABREC)) return Val_int(1+is_app);
if (Is_instruction(c, MAKEACCU)) return Val_int(3);
return Val_int(0);
}
/* DESTRUCT ACCU */
value coq_closure_arity(value clos) {
opcode_t * c = Code_val(clos);
if (Is_instruction(c,RESTART)) {
c++;
if (Is_instruction(c,GRAB)) return Val_int(3 + c[1] - Wosize_val(clos));
else {
if (Wosize_val(clos) != 2) failwith("Coq Values : coq_closure_arity");
return Val_int(1);
}
}
if (Is_instruction(c,GRAB)) return Val_int(1 + c[1]);
return Val_int(1);
}
/* Fonction sur les fix */
value coq_offset(value v) {
if (Tag_val(v) == Closure_tag) return Val_int(0);
else return Val_long(-Wsize_bsize(Infix_offset_val(v)));
}
value coq_offset_closure(value v, value offset){
return (value)&Field(v, Int_val(offset));
}
value coq_set_bytecode_field(value v, value i, value code) {
// No write barrier because the bytecode does not live on the OCaml heap
Field(v, Long_val(i)) = (value) Code_val(code);
return Val_unit;
}
value coq_offset_tcode(value code,value offset){
CAMLparam1(code);
CAMLlocal1(res);
res = caml_alloc_small(1, Abstract_tag);
Code_val(res) = Code_val(code) + Int_val(offset);
CAMLreturn(res);
}
value coq_int_tcode(value pc, value offset) {
code_t code = Code_val(pc);
return Val_int(*((code_t) code + Int_val(offset)));
}
value coq_tcode_array(value tcodes) {
CAMLparam1(tcodes);
CAMLlocal2(res, tmp);
int i;
/* Assumes that the vector of types is small. This was implicit in the
previous code which was building the type array using Alloc_small. */
res = caml_alloc_small(Wosize_val(tcodes), Default_tag);
for (i = 0; i < Wosize_val(tcodes); i++) {
tmp = caml_alloc_small(1, Abstract_tag);
Code_val(tmp) = (code_t) Field(tcodes, i);
Store_field(res, i, tmp);
}
CAMLreturn(res);
}
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