140 lines
3.7 KiB
C
140 lines
3.7 KiB
C
/***********************************************************************/
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/* */
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/* OCaml */
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/* */
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/* Alain Frisch, projet Gallium, INRIA Rocquencourt */
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/* */
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/* Copyright 2007 Institut National de Recherche en Informatique et */
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/* en Automatique. All rights reserved. This file is distributed */
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/* under the terms of the GNU Library General Public License, with */
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/* the special exception on linking described in file ../LICENSE. */
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/* */
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/***********************************************************************/
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#include "misc.h"
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#include "mlvalues.h"
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#include "memory.h"
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#include "stack.h"
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#include "callback.h"
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#include "alloc.h"
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#include "natdynlink.h"
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#include "osdeps.h"
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#include "fail.h"
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#include <stdio.h>
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#include <string.h>
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static void *getsym(void *handle, char *module, char *name){
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char *fullname = malloc(strlen(module) + strlen(name) + 5);
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void *sym;
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sprintf(fullname, "caml%s%s", module, name);
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sym = caml_dlsym (handle, fullname);
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/* printf("%s => %lx\n", fullname, (uintnat) sym); */
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free(fullname);
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return sym;
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}
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extern char caml_globals_map[];
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CAMLprim value caml_natdynlink_getmap(value unit)
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{
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return (value)caml_globals_map;
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}
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CAMLprim value caml_natdynlink_globals_inited(value unit)
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{
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return Val_int(caml_globals_inited);
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}
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CAMLprim value caml_natdynlink_open(value filename, value global)
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{
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CAMLparam1 (filename);
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CAMLlocal1 (res);
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void *sym;
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void *handle;
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/* TODO: dlclose in case of error... */
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handle = caml_dlopen(String_val(filename), 1, Int_val(global));
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if (NULL == handle)
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CAMLreturn(caml_copy_string(caml_dlerror()));
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sym = caml_dlsym(handle, "caml_plugin_header");
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if (NULL == sym)
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CAMLreturn(caml_copy_string("not an OCaml plugin"));
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res = caml_alloc_tuple(2);
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Field(res, 0) = (value) handle;
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Field(res, 1) = (value) (sym);
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CAMLreturn(res);
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}
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CAMLprim value caml_natdynlink_run(void *handle, value symbol) {
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CAMLparam1 (symbol);
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CAMLlocal1 (result);
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void *sym,*sym2;
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#define optsym(n) getsym(handle,unit,n)
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char *unit;
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void (*entrypoint)(void);
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unit = String_val(symbol);
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sym = optsym("__frametable");
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if (NULL != sym) caml_register_frametable(sym);
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sym = optsym("");
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if (NULL != sym) caml_register_dyn_global(sym);
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sym = optsym("__data_begin");
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sym2 = optsym("__data_end");
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if (NULL != sym && NULL != sym2)
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caml_page_table_add(In_static_data, sym, sym2);
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sym = optsym("__code_begin");
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sym2 = optsym("__code_end");
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if (NULL != sym && NULL != sym2)
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caml_page_table_add(In_code_area, sym, sym2);
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entrypoint = optsym("__entry");
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if (NULL != entrypoint) result = caml_callback((value)(&entrypoint), 0);
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else result = Val_unit;
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#undef optsym
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CAMLreturn (result);
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}
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CAMLprim value caml_natdynlink_run_toplevel(value filename, value symbol)
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{
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CAMLparam2 (filename, symbol);
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CAMLlocal2 (res, v);
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void *handle;
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/* TODO: dlclose in case of error... */
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handle = caml_dlopen(String_val(filename), 1, 1);
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if (NULL == handle) {
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res = caml_alloc(1,1);
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v = caml_copy_string(caml_dlerror());
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Store_field(res, 0, v);
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} else {
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res = caml_alloc(1,0);
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v = caml_natdynlink_run(handle, symbol);
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Store_field(res, 0, v);
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}
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CAMLreturn(res);
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}
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CAMLprim value caml_natdynlink_loadsym(value symbol)
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{
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CAMLparam1 (symbol);
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CAMLlocal1 (sym);
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sym = (value) caml_globalsym(String_val(symbol));
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if (!sym) caml_failwith(String_val(symbol));
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CAMLreturn(sym);
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}
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