circuitpython/py/asmbase.h

79 lines
2.7 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_PY_ASMBASE_H
#define MICROPY_INCLUDED_PY_ASMBASE_H
#include <stdint.h>
#include <stdbool.h>
#define MP_ASM_PASS_COMPUTE (1)
#define MP_ASM_PASS_EMIT (2)
typedef struct _mp_asm_base_t {
uint8_t pass;
// Set to true using mp_asm_base_suppress_code() if the code generator
// should suppress emitted code due to it being dead code.
bool suppress;
size_t code_offset;
size_t code_size;
uint8_t *code_base;
size_t max_num_labels;
size_t *label_offsets;
} mp_asm_base_t;
void mp_asm_base_init(mp_asm_base_t *as, size_t max_num_labels);
void mp_asm_base_deinit(mp_asm_base_t *as, bool free_code);
void mp_asm_base_start_pass(mp_asm_base_t *as, int pass);
uint8_t *mp_asm_base_get_cur_to_write_bytes(void *as, size_t num_bytes_to_write);
void mp_asm_base_label_assign(mp_asm_base_t *as, size_t label);
void mp_asm_base_align(mp_asm_base_t *as, unsigned int align);
void mp_asm_base_data(mp_asm_base_t *as, unsigned int bytesize, uintptr_t val);
static inline void mp_asm_base_suppress_code(mp_asm_base_t *as) {
as->suppress = true;
}
static inline size_t mp_asm_base_get_code_pos(mp_asm_base_t *as) {
return as->code_offset;
}
static inline size_t mp_asm_base_get_code_size(mp_asm_base_t *as) {
return as->code_size;
}
static inline void *mp_asm_base_get_code(mp_asm_base_t *as) {
#if defined(MP_PLAT_COMMIT_EXEC)
return MP_PLAT_COMMIT_EXEC(as->code_base, as->code_size, NULL);
#else
return as->code_base;
#endif
}
#endif // MICROPY_INCLUDED_PY_ASMBASE_H