73 lines
1.4 KiB
C
73 lines
1.4 KiB
C
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#ifndef UJIT_ASM_H
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#define UJIT_ASM_H 1
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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// Maximum number of labels to link
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#define MAX_LABELS 32
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// Maximum number of label references
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#define MAX_LABEL_REFS 32
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typedef struct LabelRef
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{
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// Position where the label reference is in the code block
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size_t pos;
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// Label which this refers to
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size_t label_idx;
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} labelref_t;
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typedef struct CodeBlock
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{
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// Memory block
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uint8_t* mem_block;
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// Memory block size
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size_t mem_size;
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/// Current writing position
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size_t write_pos;
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// Table of registered label addresses
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size_t label_addrs[MAX_LABELS];
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// References to labels
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labelref_t label_refs[MAX_LABEL_REFS];
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// Number of labels registeered
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size_t num_labels;
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// Number of references to labels
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size_t num_refs;
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// TODO: system for disassembly/comment strings, indexed by position
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// Flag to enable or disable comments
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bool has_asm;
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} codeblock_t;
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void cb_init(codeblock_t* cb, size_t mem_size);
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uint8_t* cb_get_ptr(codeblock_t* cb, size_t index);
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void cb_write_byte(codeblock_t* cb, uint8_t byte);
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void cb_write_bytes(codeblock_t* cb, size_t num_bytes, ...);
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void cb_write_int(codeblock_t* cb, uint64_t val, size_t num_bits);
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// TODO:
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// prologue and epilogue functions
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// cb_write_prologue()
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// cb_write_epilogue
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// Test those out
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void nop(codeblock_t* cb, size_t length);
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#endif
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