diff options
author | Damien George <damien.p.george@gmail.com> | 2016-11-28 09:24:50 +1100 |
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committer | Damien George <damien.p.george@gmail.com> | 2016-11-28 09:24:50 +1100 |
commit | 612599587bef71e1deca9a77a8e2e16e69b045de (patch) | |
tree | ea4dc739dbff37bc65a5e522411c0e472cdc11a4 /py/asmbase.h | |
parent | 21e1703d37a645548aff6b833a49dfdfb3543c70 (diff) |
py: Factor out common code from assemblers into asmbase.[ch].
All assemblers should "derive" from mp_asm_base_t.
Diffstat (limited to 'py/asmbase.h')
-rw-r--r-- | py/asmbase.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/py/asmbase.h b/py/asmbase.h new file mode 100644 index 000000000..bfc8ac7ff --- /dev/null +++ b/py/asmbase.h @@ -0,0 +1,68 @@ +/* + * 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 { + int pass; + size_t code_offset; + size_t code_size; + uint8_t *code_base; + + size_t max_num_labels; + size_t *label_offsets; + + // must be last in struct + uint8_t dummy_data[4]; +} 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(mp_asm_base_t *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 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) { + return as->code_base; +} + +#endif // MICROPY_INCLUDED_PY_ASMBASE_H |