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b9b62574bf
generate_jit_assets.py expands the automatated code generation to include: - Opcode enumerations in arm32_opcodes.h. - Decoder lookup tables in arm32_table.c - Computed-goto jump tables foe the interpreter in handler_table.inc. Relocates arm32.inc to src/jit/common/a32_instructions.inc. Implements the primary execution loop in src/jit/interpreter/arm32/instruction.c. The code is messy and will be rewritten in the future. Signed-off-by: Ronald Caesar <github43132@proton.me>
34 lines
845 B
C
34 lines
845 B
C
#include "arm32.h"
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#include "arm32_table.h"
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#include "common/passert.h"
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#include <string.h>
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#include <stdbool.h>
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#define LOG_MODULE "jit"
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#include "common/logging.h"
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const pvm_jit_decoder_arm32_instruction_info_t *
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pvm_jit_decoder_arm32_decode (const uint32_t instruction)
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{
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/* Extract hash key: Bits [27:20] and [7:4] */
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const uint32_t major = (instruction >> 20U) & 0xFFU;
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const uint32_t minor = (instruction >> 4U) & 0xFU;
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const uint16_t index = (uint16_t)((major << 4U) | minor);
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const decode_bucket_t *bucket = &g_decoder_lookup_table[index];
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for (size_t i = 0; i < bucket->count; ++i)
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{
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const pvm_jit_decoder_arm32_instruction_info_t *info = bucket->instructions[i];
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if ((instruction & info->mask) == info->expected)
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{
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return info;
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}
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}
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return NULL;
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}
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