155fdc74d5
For all but the last pass the assembler only needs to count how much space is needed for the machine code, it doesn't actually need to emit anything. The dummy_data just uses unnecessary RAM and without it the code is not any more complex (and code size does not increase for Thumb and Xtensa archs).
70 lines
2.5 KiB
C
70 lines
2.5 KiB
C
/*
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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) 2016 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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#ifndef MICROPY_INCLUDED_PY_ASMBASE_H
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#define MICROPY_INCLUDED_PY_ASMBASE_H
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#include <stdint.h>
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#include <stdbool.h>
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#define MP_ASM_PASS_COMPUTE (1)
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#define MP_ASM_PASS_EMIT (2)
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typedef struct _mp_asm_base_t {
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int pass;
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size_t code_offset;
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size_t code_size;
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uint8_t *code_base;
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size_t max_num_labels;
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size_t *label_offsets;
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} mp_asm_base_t;
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void mp_asm_base_init(mp_asm_base_t *as, size_t max_num_labels);
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void mp_asm_base_deinit(mp_asm_base_t *as, bool free_code);
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void mp_asm_base_start_pass(mp_asm_base_t *as, int pass);
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uint8_t *mp_asm_base_get_cur_to_write_bytes(mp_asm_base_t *as, size_t num_bytes_to_write);
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void mp_asm_base_label_assign(mp_asm_base_t *as, size_t label);
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void mp_asm_base_align(mp_asm_base_t* as, unsigned int align);
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void mp_asm_base_data(mp_asm_base_t* as, unsigned int bytesize, uintptr_t val);
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static inline size_t mp_asm_base_get_code_pos(mp_asm_base_t *as) {
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return as->code_offset;
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}
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static inline size_t mp_asm_base_get_code_size(mp_asm_base_t *as) {
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return as->code_size;
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}
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static inline void *mp_asm_base_get_code(mp_asm_base_t *as) {
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#if defined(MP_PLAT_COMMIT_EXEC)
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return MP_PLAT_COMMIT_EXEC(as->code_base, as->code_size);
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#else
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return as->code_base;
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#endif
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}
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#endif // MICROPY_INCLUDED_PY_ASMBASE_H
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