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authorPaul Sokolovsky <pfalcon@users.sourceforge.net>2014-04-04 20:32:26 +0300
committerPaul Sokolovsky <pfalcon@users.sourceforge.net>2014-04-04 20:34:10 +0300
commitc39368427c7fbd294d7783a706593cbb7468e06d (patch)
tree41640418de33a0fa42c38b0cc886cfa82ab1ea30 /unix/ffi.c
parentcd31d826bf468b326356d5fa809e42e3d1cc9727 (diff)
downloadmicropython-c39368427c7fbd294d7783a706593cbb7468e06d.tar.gz
micropython-c39368427c7fbd294d7783a706593cbb7468e06d.zip
unix: Rename module sources per latest naming conventions (mod*.c).
Diffstat (limited to 'unix/ffi.c')
-rw-r--r--unix/ffi.c354
1 files changed, 0 insertions, 354 deletions
diff --git a/unix/ffi.c b/unix/ffi.c
deleted file mode 100644
index cb63869e09..0000000000
--- a/unix/ffi.c
+++ /dev/null
@@ -1,354 +0,0 @@
-#include <assert.h>
-#include <string.h>
-#include <errno.h>
-#include <dlfcn.h>
-#include <ffi.h>
-
-#include "nlr.h"
-#include "misc.h"
-#include "mpconfig.h"
-#include "qstr.h"
-#include "obj.h"
-#include "runtime.h"
-#include "binary.h"
-
-typedef struct _mp_obj_opaque_t {
- mp_obj_base_t base;
- void *val;
-} mp_obj_opaque_t;
-
-typedef struct _mp_obj_ffimod_t {
- mp_obj_base_t base;
- void *handle;
-} mp_obj_ffimod_t;
-
-typedef struct _mp_obj_ffivar_t {
- mp_obj_base_t base;
- void *var;
- char type;
-// ffi_type *type;
-} mp_obj_ffivar_t;
-
-typedef struct _mp_obj_ffifunc_t {
- mp_obj_base_t base;
- void *func;
- char rettype;
- ffi_cif cif;
- ffi_type *params[];
-} mp_obj_ffifunc_t;
-
-typedef struct _mp_obj_fficallback_t {
- mp_obj_base_t base;
- void *func;
- ffi_closure *clo;
- char rettype;
- ffi_cif cif;
- ffi_type *params[];
-} mp_obj_fficallback_t;
-
-//STATIC const mp_obj_type_t opaque_type;
-STATIC const mp_obj_type_t ffimod_type;
-STATIC const mp_obj_type_t ffifunc_type;
-STATIC const mp_obj_type_t fficallback_type;
-STATIC const mp_obj_type_t ffivar_type;
-
-STATIC ffi_type *char2ffi_type(char c)
-{
- switch (c) {
- case 'b': return &ffi_type_schar;
- case 'B': return &ffi_type_uchar;
- case 'i': return &ffi_type_sint;
- case 'I': return &ffi_type_uint;
- case 'l': return &ffi_type_slong;
- case 'L': return &ffi_type_ulong;
- case 'p':
- case 's': return &ffi_type_pointer;
- case 'v': return &ffi_type_void;
- default: return NULL;
- }
-}
-
-STATIC ffi_type *get_ffi_type(mp_obj_t o_in)
-{
- if (MP_OBJ_IS_STR(o_in)) {
- uint len;
- const char *s = mp_obj_str_get_data(o_in, &len);
- ffi_type *t = char2ffi_type(*s);
- if (t != NULL) {
- return t;
- }
- }
- // TODO: Support actual libffi type objects
-
- nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_OSError, "Unknown type"));
-}
-
-STATIC mp_obj_t return_ffi_value(ffi_arg val, char type)
-{
- switch (type) {
- case 's': {
- const char *s = (const char *)val;
- return mp_obj_new_str((const byte *)s, strlen(s), false);
- }
- case 'v':
- return mp_const_none;
- default:
- return mp_obj_new_int(val);
- }
-}
-
-// FFI module
-
-STATIC void ffimod_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
- mp_obj_ffimod_t *self = self_in;
- print(env, "<ffimod %p>", self->handle);
-}
-
-STATIC mp_obj_t ffimod_close(mp_obj_t self_in) {
- mp_obj_ffimod_t *self = self_in;
- dlclose(self->handle);
- return mp_const_none;
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_1(ffimod_close_obj, ffimod_close);
-
-STATIC mp_obj_t ffimod_func(uint n_args, const mp_obj_t *args) {
- mp_obj_ffimod_t *self = args[0];
- const char *rettype = mp_obj_str_get_str(args[1]);
- const char *symname = mp_obj_str_get_str(args[2]);
-
- void *sym = dlsym(self->handle, symname);
- if (sym == NULL) {
- nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_OSError, "[Errno %d]", errno));
- }
- int nparams = MP_OBJ_SMALL_INT_VALUE(mp_obj_len_maybe(args[3]));
- mp_obj_ffifunc_t *o = m_new_obj_var(mp_obj_ffifunc_t, ffi_type*, nparams);
- o->base.type = &ffifunc_type;
-
- o->func = sym;
- o->rettype = *rettype;
-
- mp_obj_t iterable = mp_getiter(args[3]);
- mp_obj_t item;
- int i = 0;
- while ((item = mp_iternext(iterable)) != MP_OBJ_NULL) {
- o->params[i++] = get_ffi_type(item);
- }
-
- int res = ffi_prep_cif(&o->cif, FFI_DEFAULT_ABI, nparams, char2ffi_type(*rettype), o->params);
- if (res != FFI_OK) {
- nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_OSError, "Error in ffi_prep_cif"));
- }
-
- return o;
-}
-MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(ffimod_func_obj, 4, 4, ffimod_func);
-
-STATIC void call_py_func(ffi_cif *cif, void *ret, void** args, mp_obj_t func) {
- mp_obj_t pyargs[cif->nargs];
- for (int i = 0; i < cif->nargs; i++) {
- pyargs[i] = mp_obj_new_int(*(int*)args[i]);
- }
- mp_obj_t res = mp_call_function_n_kw(func, cif->nargs, 0, pyargs);
-
- *(ffi_arg*)ret = mp_obj_int_get(res);
-}
-
-STATIC mp_obj_t mod_ffi_callback(mp_obj_t rettype_in, mp_obj_t func_in, mp_obj_t paramtypes_in) {
- const char *rettype = mp_obj_str_get_str(rettype_in);
-
- int nparams = MP_OBJ_SMALL_INT_VALUE(mp_obj_len_maybe(paramtypes_in));
- mp_obj_fficallback_t *o = m_new_obj_var(mp_obj_fficallback_t, ffi_type*, nparams);
- o->base.type = &fficallback_type;
-
- o->clo = ffi_closure_alloc(sizeof(ffi_closure), &o->func);
-
- o->rettype = *rettype;
-
- mp_obj_t iterable = mp_getiter(paramtypes_in);
- mp_obj_t item;
- int i = 0;
- while ((item = mp_iternext(iterable)) != MP_OBJ_NULL) {
- o->params[i++] = get_ffi_type(item);
- }
-
- int res = ffi_prep_cif(&o->cif, FFI_DEFAULT_ABI, nparams, char2ffi_type(*rettype), o->params);
- if (res != FFI_OK) {
- nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_OSError, "Error in ffi_prep_cif"));
- }
-
- res = ffi_prep_closure_loc(o->clo, &o->cif, call_py_func, func_in, o->func);
- if (res != FFI_OK) {
- nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_OSError, "ffi_prep_closure_loc"));
- }
-
- return o;
-}
-MP_DEFINE_CONST_FUN_OBJ_3(mod_ffi_callback_obj, mod_ffi_callback);
-
-STATIC mp_obj_t ffimod_var(mp_obj_t self_in, mp_obj_t vartype_in, mp_obj_t symname_in) {
- mp_obj_ffimod_t *self = self_in;
- const char *rettype = mp_obj_str_get_str(vartype_in);
- const char *symname = mp_obj_str_get_str(symname_in);
-
- void *sym = dlsym(self->handle, symname);
- if (sym == NULL) {
- nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_OSError, "[Errno %d]", errno));
- }
- mp_obj_ffivar_t *o = m_new_obj(mp_obj_ffivar_t);
- o->base.type = &ffivar_type;
-
- o->var = sym;
- o->type = *rettype;
- return o;
-}
-MP_DEFINE_CONST_FUN_OBJ_3(ffimod_var_obj, ffimod_var);
-
-STATIC mp_obj_t ffimod_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
- const char *fname = mp_obj_str_get_str(args[0]);
- void *mod = dlopen(fname, RTLD_NOW | RTLD_LOCAL);
-
- if (mod == NULL) {
- nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_OSError, "[Errno %d]", errno));
- }
- mp_obj_ffimod_t *o = m_new_obj(mp_obj_ffimod_t);
- o->base.type = type_in;
- o->handle = mod;
- return o;
-}
-
-STATIC const mp_map_elem_t ffimod_locals_dict_table[] = {
- { MP_OBJ_NEW_QSTR(MP_QSTR_func), (mp_obj_t) &ffimod_func_obj },
- { MP_OBJ_NEW_QSTR(MP_QSTR_var), (mp_obj_t) &ffimod_var_obj },
- { MP_OBJ_NEW_QSTR(MP_QSTR_close), (mp_obj_t) &ffimod_close_obj },
-};
-
-STATIC MP_DEFINE_CONST_DICT(ffimod_locals_dict, ffimod_locals_dict_table);
-
-STATIC const mp_obj_type_t ffimod_type = {
- { &mp_type_type },
- .name = MP_QSTR_ffimod,
- .print = ffimod_print,
- .make_new = ffimod_make_new,
- .locals_dict = (mp_obj_t)&ffimod_locals_dict,
-};
-
-// FFI function
-
-STATIC void ffifunc_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
- mp_obj_ffifunc_t *self = self_in;
- print(env, "<ffifunc %p>", self->func);
-}
-
-mp_obj_t ffifunc_call(mp_obj_t self_in, uint n_args, uint n_kw, const mp_obj_t *args) {
- mp_obj_ffifunc_t *self = self_in;
- assert(n_kw == 0);
- assert(n_args == self->cif.nargs);
-
- ffi_arg values[n_args];
- void *valueptrs[n_args];
- int i;
- for (i = 0; i < n_args; i++) {
- mp_obj_t a = args[i];
- if (a == mp_const_none) {
- values[i] = 0;
- } else if (MP_OBJ_IS_INT(a)) {
- values[i] = mp_obj_int_get(a);
- } else if (MP_OBJ_IS_STR(a) || MP_OBJ_IS_TYPE(a, &mp_type_bytes)) {
- const char *s = mp_obj_str_get_str(a);
- values[i] = (ffi_arg)s;
- } else if (MP_OBJ_IS_TYPE(a, &fficallback_type)) {
- mp_obj_fficallback_t *p = a;
- values[i] = (ffi_arg)p->func;
- } else {
- assert(0);
- }
- valueptrs[i] = &values[i];
- }
-
- ffi_arg retval;
- ffi_call(&self->cif, self->func, &retval, valueptrs);
- return return_ffi_value(retval, self->rettype);
-}
-
-STATIC const mp_obj_type_t ffifunc_type = {
- { &mp_type_type },
- .name = MP_QSTR_ffifunc,
- .print = ffifunc_print,
- .call = ffifunc_call,
-};
-
-// FFI callback for Python function
-
-STATIC void fficallback_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
- mp_obj_fficallback_t *self = self_in;
- print(env, "<fficallback %p>", self->func);
-}
-
-STATIC const mp_obj_type_t fficallback_type = {
- { &mp_type_type },
- .name = MP_QSTR_fficallback,
- .print = fficallback_print,
-};
-
-// FFI variable
-
-STATIC void ffivar_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
- mp_obj_ffivar_t *self = self_in;
- print(env, "<ffivar @%p: 0x%x>", self->var, *(int*)self->var);
-}
-
-STATIC mp_obj_t ffivar_get(mp_obj_t self_in) {
- mp_obj_ffivar_t *self = self_in;
- return mp_binary_get_val(self->type, self->var, 0);
-}
-MP_DEFINE_CONST_FUN_OBJ_1(ffivar_get_obj, ffivar_get);
-
-STATIC mp_obj_t ffivar_set(mp_obj_t self_in, mp_obj_t val_in) {
- mp_obj_ffivar_t *self = self_in;
- mp_binary_set_val(self->type, self->var, 0, val_in);
- return mp_const_none;
-}
-MP_DEFINE_CONST_FUN_OBJ_2(ffivar_set_obj, ffivar_set);
-
-STATIC const mp_map_elem_t ffivar_locals_dict_table[] = {
- { MP_OBJ_NEW_QSTR(MP_QSTR_get), (mp_obj_t)&ffivar_get_obj },
- { MP_OBJ_NEW_QSTR(MP_QSTR_set), (mp_obj_t)&ffivar_set_obj },
-};
-
-STATIC MP_DEFINE_CONST_DICT(ffivar_locals_dict, ffivar_locals_dict_table);
-
-STATIC const mp_obj_type_t ffivar_type = {
- { &mp_type_type },
- .name = MP_QSTR_ffivar,
- .print = ffivar_print,
- .locals_dict = (mp_obj_t)&ffivar_locals_dict,
-};
-
-// Generic opaque storage object (unused)
-
-/*
-STATIC const mp_obj_type_t opaque_type = {
- { &mp_type_type },
- .name = MP_QSTR_opaqueval,
-// .print = opaque_print,
-};
-*/
-
-mp_obj_t mod_ffi_open(uint n_args, const mp_obj_t *args) {
- return ffimod_make_new((mp_obj_t)&ffimod_type, n_args, 0, args);
-}
-MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_ffi_open_obj, 1, 2, mod_ffi_open);
-
-mp_obj_t mod_ffi_as_bytearray(mp_obj_t ptr, mp_obj_t size) {
- return mp_obj_new_bytearray_by_ref(mp_obj_int_get(size), (void*)mp_obj_int_get(ptr));
-}
-MP_DEFINE_CONST_FUN_OBJ_2(mod_ffi_as_bytearray_obj, mod_ffi_as_bytearray);
-
-
-void ffi_init() {
- mp_obj_t m = mp_obj_new_module(QSTR_FROM_STR_STATIC("ffi"));
- mp_store_attr(m, MP_QSTR_open, (mp_obj_t)&mod_ffi_open_obj);
- mp_store_attr(m, QSTR_FROM_STR_STATIC("callback"), (mp_obj_t)&mod_ffi_callback_obj);
- // there would be as_bytes, but bytes currently is value, not reference type!
- mp_store_attr(m, QSTR_FROM_STR_STATIC("as_bytearray"), (mp_obj_t)&mod_ffi_as_bytearray_obj);
-}