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author | Paul Sokolovsky <pfalcon@users.sourceforge.net> | 2014-04-04 20:32:26 +0300 |
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committer | Paul Sokolovsky <pfalcon@users.sourceforge.net> | 2014-04-04 20:34:10 +0300 |
commit | c39368427c7fbd294d7783a706593cbb7468e06d (patch) | |
tree | 41640418de33a0fa42c38b0cc886cfa82ab1ea30 /unix/ffi.c | |
parent | cd31d826bf468b326356d5fa809e42e3d1cc9727 (diff) | |
download | micropython-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.c | 354 |
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); -} |