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237 lines
8.2 KiB
237 lines
8.2 KiB
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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// This code glues the code emitters to the runtime.
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include "py/emitglue.h"
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#include "py/runtime0.h"
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#include "py/bc.h"
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#include "py/objfun.h"
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#include "py/profile.h"
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#if MICROPY_DEBUG_VERBOSE // print debugging info
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#define DEBUG_PRINT (1)
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#define WRITE_CODE (1)
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#define DEBUG_printf DEBUG_printf
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#define DEBUG_OP_printf(...) DEBUG_printf(__VA_ARGS__)
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#else // don't print debugging info
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#define DEBUG_printf(...) (void)0
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#define DEBUG_OP_printf(...) (void)0
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#endif
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#if MICROPY_DEBUG_PRINTERS
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mp_uint_t mp_verbose_flag = 0;
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#endif
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mp_raw_code_t *mp_emit_glue_new_raw_code(void) {
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mp_raw_code_t *rc = m_new0(mp_raw_code_t, 1);
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rc->kind = MP_CODE_RESERVED;
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#if MICROPY_PY_SYS_SETTRACE
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rc->line_of_definition = 0;
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#endif
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return rc;
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}
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void mp_emit_glue_assign_bytecode(mp_raw_code_t *rc, const byte *code,
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#if MICROPY_PERSISTENT_CODE_SAVE || MICROPY_DEBUG_PRINTERS
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size_t len,
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#endif
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mp_raw_code_t **children,
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#if MICROPY_PERSISTENT_CODE_SAVE
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size_t n_children,
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#endif
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mp_uint_t scope_flags) {
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rc->kind = MP_CODE_BYTECODE;
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rc->scope_flags = scope_flags;
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rc->fun_data = code;
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#if MICROPY_PERSISTENT_CODE_SAVE || MICROPY_DEBUG_PRINTERS
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rc->fun_data_len = len;
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#endif
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rc->children = children;
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#if MICROPY_PERSISTENT_CODE_SAVE
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rc->n_children = n_children;
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#endif
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#if MICROPY_PY_SYS_SETTRACE
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mp_bytecode_prelude_t *prelude = &rc->prelude;
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mp_prof_extract_prelude(code, prelude);
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#endif
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#ifdef DEBUG_PRINT
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#if !(MICROPY_PERSISTENT_CODE_SAVE || MICROPY_DEBUG_PRINTERS)
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const size_t len = 0;
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#endif
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DEBUG_printf("assign byte code: code=%p len=" UINT_FMT " flags=%x\n", code, len, (uint)scope_flags);
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#endif
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}
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#if MICROPY_EMIT_MACHINE_CODE
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void mp_emit_glue_assign_native(mp_raw_code_t *rc, mp_raw_code_kind_t kind, void *fun_data, mp_uint_t fun_len,
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mp_raw_code_t **children,
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#if MICROPY_PERSISTENT_CODE_SAVE
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size_t n_children,
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uint16_t prelude_offset,
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uint16_t n_qstr, mp_qstr_link_entry_t *qstr_link,
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#endif
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mp_uint_t scope_flags, mp_uint_t n_pos_args, mp_uint_t type_sig) {
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assert(kind == MP_CODE_NATIVE_PY || kind == MP_CODE_NATIVE_VIPER || kind == MP_CODE_NATIVE_ASM);
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// Some architectures require flushing/invalidation of the I/D caches,
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// so that the generated native code which was created in data RAM will
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// be available for execution from instruction RAM.
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#if MICROPY_EMIT_THUMB || MICROPY_EMIT_INLINE_THUMB
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#if __ICACHE_PRESENT == 1
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// Flush D-cache, so the code emitted is stored in RAM.
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MP_HAL_CLEAN_DCACHE(fun_data, fun_len);
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// Invalidate I-cache, so the newly-created code is reloaded from RAM.
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SCB_InvalidateICache();
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#endif
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#elif MICROPY_EMIT_ARM
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#if (defined(__linux__) && defined(__GNUC__)) || __ARM_ARCH == 7
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__builtin___clear_cache(fun_data, (uint8_t *)fun_data + fun_len);
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#elif defined(__arm__)
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// Flush I-cache and D-cache.
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asm volatile (
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"0:"
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"mrc p15, 0, r15, c7, c10, 3\n" // test and clean D-cache
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"bne 0b\n"
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"mov r0, #0\n"
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"mcr p15, 0, r0, c7, c7, 0\n" // invalidate I-cache and D-cache
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: : : "r0", "cc");
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#endif
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#endif
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rc->kind = kind;
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rc->scope_flags = scope_flags;
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rc->fun_data = fun_data;
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#if MICROPY_PERSISTENT_CODE_SAVE || MICROPY_DEBUG_PRINTERS
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rc->fun_data_len = fun_len;
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#endif
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rc->children = children;
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#if MICROPY_PERSISTENT_CODE_SAVE
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rc->n_children = n_children;
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rc->prelude_offset = prelude_offset;
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rc->n_qstr = n_qstr;
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rc->qstr_link = qstr_link;
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#endif
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// These two entries are only needed for MP_CODE_NATIVE_ASM.
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rc->n_pos_args = n_pos_args;
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rc->type_sig = type_sig;
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#ifdef DEBUG_PRINT
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DEBUG_printf("assign native: kind=%d fun=%p len=" UINT_FMT " n_pos_args=" UINT_FMT " flags=%x\n", kind, fun_data, fun_len, n_pos_args, (uint)scope_flags);
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for (mp_uint_t i = 0; i < fun_len; i++) {
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if (i > 0 && i % 16 == 0) {
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DEBUG_printf("\n");
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}
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DEBUG_printf(" %02x", ((byte *)fun_data)[i]);
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}
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DEBUG_printf("\n");
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#ifdef WRITE_CODE
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FILE *fp_write_code = fopen("out-code", "wb");
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fwrite(fun_data, fun_len, 1, fp_write_code);
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fclose(fp_write_code);
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#endif
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#else
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(void)fun_len;
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#endif
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}
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#endif
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mp_obj_t mp_make_function_from_raw_code(const mp_raw_code_t *rc, const mp_module_context_t *context, const mp_obj_t *def_args) {
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DEBUG_OP_printf("make_function_from_raw_code %p\n", rc);
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assert(rc != NULL);
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// def_args must be MP_OBJ_NULL or a tuple
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assert(def_args == NULL || def_args[0] == MP_OBJ_NULL || mp_obj_is_type(def_args[0], &mp_type_tuple));
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// def_kw_args must be MP_OBJ_NULL or a dict
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assert(def_args == NULL || def_args[1] == MP_OBJ_NULL || mp_obj_is_type(def_args[1], &mp_type_dict));
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// make the function, depending on the raw code kind
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mp_obj_t fun;
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switch (rc->kind) {
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#if MICROPY_EMIT_NATIVE
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case MP_CODE_NATIVE_PY:
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case MP_CODE_NATIVE_VIPER:
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fun = mp_obj_new_fun_native(def_args, rc->fun_data, context, rc->children);
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// Check for a generator function, and if so change the type of the object
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if ((rc->scope_flags & MP_SCOPE_FLAG_GENERATOR) != 0) {
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((mp_obj_base_t *)MP_OBJ_TO_PTR(fun))->type = &mp_type_native_gen_wrap;
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}
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break;
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#endif
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#if MICROPY_EMIT_INLINE_ASM
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case MP_CODE_NATIVE_ASM:
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fun = mp_obj_new_fun_asm(rc->n_pos_args, rc->fun_data, rc->type_sig);
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break;
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#endif
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default:
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// rc->kind should always be set and BYTECODE is the only remaining case
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assert(rc->kind == MP_CODE_BYTECODE);
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fun = mp_obj_new_fun_bc(def_args, rc->fun_data, context, rc->children);
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// check for generator functions and if so change the type of the object
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if ((rc->scope_flags & MP_SCOPE_FLAG_GENERATOR) != 0) {
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((mp_obj_base_t *)MP_OBJ_TO_PTR(fun))->type = &mp_type_gen_wrap;
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}
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#if MICROPY_PY_SYS_SETTRACE
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mp_obj_fun_bc_t *self_fun = (mp_obj_fun_bc_t *)MP_OBJ_TO_PTR(fun);
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self_fun->rc = rc;
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#endif
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break;
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}
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return fun;
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}
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mp_obj_t mp_make_closure_from_raw_code(const mp_raw_code_t *rc, const mp_module_context_t *context, mp_uint_t n_closed_over, const mp_obj_t *args) {
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DEBUG_OP_printf("make_closure_from_raw_code %p " UINT_FMT " %p\n", rc, n_closed_over, args);
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// make function object
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mp_obj_t ffun;
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if (n_closed_over & 0x100) {
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// default positional and keyword args given
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ffun = mp_make_function_from_raw_code(rc, context, args);
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} else {
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// default positional and keyword args not given
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ffun = mp_make_function_from_raw_code(rc, context, NULL);
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}
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// wrap function in closure object
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return mp_obj_new_closure(ffun, n_closed_over & 0xff, args + ((n_closed_over >> 7) & 2));
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}
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