1 /*
2 * This file is part of the MicroPython project, http://micropython.org/
3 *
4 * The MIT License (MIT)
5 *
6 * Copyright (c) 2016 Damien P. George
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 * THE SOFTWARE.
25 */
26 #ifndef MICROPY_INCLUDED_PY_ASMBASE_H
27 #define MICROPY_INCLUDED_PY_ASMBASE_H
28
29 #include <stdint.h>
30 #include <stdbool.h>
31
32 #define MP_ASM_PASS_COMPUTE (1)
33 #define MP_ASM_PASS_EMIT (2)
34
35 typedef struct _mp_asm_base_t {
36 int pass;
37 size_t code_offset;
38 size_t code_size;
39 uint8_t *code_base;
40
41 size_t max_num_labels;
42 size_t *label_offsets;
43 } mp_asm_base_t;
44
45 void mp_asm_base_init(mp_asm_base_t *as, size_t max_num_labels);
46 void mp_asm_base_deinit(mp_asm_base_t *as, bool free_code);
47 void mp_asm_base_start_pass(mp_asm_base_t *as, int pass);
48 uint8_t *mp_asm_base_get_cur_to_write_bytes(mp_asm_base_t *as, size_t num_bytes_to_write);
49 void mp_asm_base_label_assign(mp_asm_base_t *as, size_t label);
50 void mp_asm_base_align(mp_asm_base_t *as, unsigned int align);
51 void mp_asm_base_data(mp_asm_base_t *as, unsigned int bytesize, uintptr_t val);
52
mp_asm_base_get_code_pos(mp_asm_base_t * as)53 static inline size_t mp_asm_base_get_code_pos(mp_asm_base_t *as) {
54 return as->code_offset;
55 }
56
mp_asm_base_get_code_size(mp_asm_base_t * as)57 static inline size_t mp_asm_base_get_code_size(mp_asm_base_t *as) {
58 return as->code_size;
59 }
60
mp_asm_base_get_code(mp_asm_base_t * as)61 static inline void *mp_asm_base_get_code(mp_asm_base_t *as) {
62 #if defined(MP_PLAT_COMMIT_EXEC)
63 return MP_PLAT_COMMIT_EXEC(as->code_base, as->code_size, NULL);
64 #else
65 return as->code_base;
66 #endif
67 }
68
69 #endif // MICROPY_INCLUDED_PY_ASMBASE_H
70