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/**************************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. */
/* */
/* All rights reserved. This file is distributed under the terms of */
/* the GNU Lesser General Public License version 2.1, with the */
/* special exception on linking described in the file LICENSE. */
/* */
/**************************************************************************/
#define CAML_INTERNALS
/* Primitives for the toplevel */
#include <string.h>
#include "caml/alloc.h"
#include "caml/backtrace_prim.h"
#include "caml/bigarray.h"
#include "caml/codefrag.h"
#include "caml/config.h"
#include "caml/debugger.h"
#include "caml/fail.h"
#include "caml/fiber.h"
#include "caml/fix_code.h"
#include "caml/interp.h"
#include "caml/intext.h"
#include "caml/major_gc.h"
#include "caml/memory.h"
#include "caml/minor_gc.h"
#include "caml/misc.h"
#include "caml/mlvalues.h"
#include "caml/prims.h"
#include "caml/startup_aux.h"
#include "caml/instruct.h"
#ifndef NATIVE_CODE
CAMLprim value caml_get_global_data(value unit)
{
return caml_global_data;
}
struct bytecode {
code_t prog;
asize_t len;
};
#define Bytecode_val(p) ((struct bytecode*)Data_abstract_val(p))
CAMLprim value caml_reify_bytecode(value ls_prog,
value debuginfo,
value digest_opt)
{
CAMLparam3(ls_prog, debuginfo, digest_opt);
CAMLlocal3(clos, bytecode, retval);
code_t prog;
asize_t len; /* in bytes */
enum digest_status digest_kind;
unsigned char * digest;
int fragnum;
len = caml_ba_byte_size(Caml_ba_array_val(ls_prog));
prog = caml_stat_alloc(len + sizeof(opcode_t) * 2 /* for 'RETURN 1' */);
memcpy(prog, Caml_ba_data_val(ls_prog), len);
#ifdef ARCH_BIG_ENDIAN
caml_fixup_endianness(prog, len);
#endif
prog[len / sizeof(opcode_t)] = RETURN;
len += sizeof(opcode_t);
prog[len / sizeof(opcode_t)] = 1;
len += sizeof(opcode_t);
caml_add_debug_info(prog, Val_long(len), debuginfo);
/* match (digest_opt : string option) with */
if (Is_some(digest_opt)) {
digest_kind = DIGEST_PROVIDED;
digest = (unsigned char *) String_val(Some_val(digest_opt));
} else {
digest_kind = DIGEST_LATER;
digest = NULL;
}
fragnum = caml_register_code_fragment((char *) prog, (char *) prog + len,
digest_kind, digest);
#ifdef THREADED_CODE
caml_thread_code((code_t) prog, len);
#endif
/* Notify debugger after fragment gets added and reified. */
caml_debugger(CODE_LOADED, Val_long(fragnum));
clos = caml_alloc_small (2, Closure_tag);
Code_val(clos) = (code_t) prog;
Closinfo_val(clos) = Make_closinfo(0, 2);
bytecode = caml_alloc_small (2, Abstract_tag);
Bytecode_val(bytecode)->prog = prog;
Bytecode_val(bytecode)->len = len;
retval = caml_alloc_small (2, 0);
Field(retval, 0) = bytecode;
Field(retval, 1) = clos;
CAMLreturn (retval);
}
/* signal to the interpreter machinery that a bytecode is no more
needed (before freeing it) */
CAMLprim value caml_static_release_bytecode(value bc)
{
code_t prog;
struct code_fragment *cf;
prog = Bytecode_val(bc)->prog;
caml_remove_debug_info(prog);
cf = caml_find_code_fragment_by_pc((char *) prog);
CAMLassert(cf != NULL);
/* Notify debugger before the fragment gets destroyed. */
caml_debugger(CODE_UNLOADED, Val_long(cf->fragnum));
caml_remove_code_fragment(cf);
caml_stat_free(prog);
return Val_unit;
}
CAMLprim value caml_realloc_global(value size)
{
mlsize_t requested_size, actual_size;
value new_global_data, old_global_data;
old_global_data = caml_global_data;
requested_size = Long_val(size);
actual_size = Wosize_val(old_global_data);
if (requested_size >= actual_size) {
requested_size = (requested_size + 0x100) & 0xFFFFFF00;
caml_gc_message (0x08, "Growing global data to %"
ARCH_INTNAT_PRINTF_FORMAT "u entries\n",
requested_size);
new_global_data = caml_alloc_shr(requested_size, 0);
for (mlsize_t i = 0; i < actual_size; i++)
caml_initialize(&Field(new_global_data, i), Field(old_global_data, i));
for (mlsize_t i = actual_size; i < requested_size; i++){
Field (new_global_data, i) = Val_long (0);
}
caml_modify_generational_global_root(&caml_global_data, new_global_data);
}
return Val_unit;
}
CAMLprim value caml_get_current_environment(value unit)
{
return *Caml_state->current_stack->sp;
}
CAMLprim value caml_invoke_traced_function(value codeptr, value env, value arg)
{
/* Stack layout on entry:
return frame into instrument_closure function
arg3 to call_original_code (arg)
arg2 to call_original_code (env)
arg1 to call_original_code (codeptr)
arg3 to call_original_code (arg)
arg2 to call_original_code (env)
saved pc
saved env */
/* Stack layout on exit:
return frame into instrument_closure function
actual arg to code (arg)
pseudo return frame into codeptr:
extra_args = 0
environment = env
PC = codeptr
arg3 to call_original_code (arg) same 7 bottom words as
arg2 to call_original_code (env) on entrance, but
arg1 to call_original_code (codeptr) shifted down 4 words
arg3 to call_original_code (arg)
arg2 to call_original_code (env)
saved pc
saved env */
value * osp, * nsp;
osp = Caml_state->current_stack->sp;
Caml_state->current_stack->sp -= 4;
nsp = Caml_state->current_stack->sp;
for (int i = 0; i < 7; i++) nsp[i] = osp[i];
nsp[7] = (value) Nativeint_val(codeptr);
nsp[8] = env;
nsp[9] = Val_int(0);
nsp[10] = arg;
return Val_unit;
}
#else
/* Dummy definitions to support compilation of ocamlc.opt */
value caml_get_global_data(value unit)
{
caml_invalid_argument("Meta.get_global_data");
return Val_unit; /* not reached */
}
value caml_realloc_global(value size)
{
caml_invalid_argument("Meta.realloc_global");
return Val_unit; /* not reached */
}
value caml_invoke_traced_function(value codeptr, value env, value arg)
{
caml_invalid_argument("Meta.invoke_traced_function");
return Val_unit; /* not reached */
}
value caml_reify_bytecode(value prog, value len)
{
caml_invalid_argument("Meta.reify_bytecode");
return Val_unit; /* not reached */
}
value caml_static_release_bytecode(value prog, value len)
{
caml_invalid_argument("Meta.static_release_bytecode");
return Val_unit; /* not reached */
}
#endif
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