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Andre Wagner
2026-04-28 17:19:05 -05:00
parent a91e65dc84
commit 9092a7ea64
4 changed files with 8 additions and 6 deletions
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1
doc/BYTECODE
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@@ -18,6 +18,7 @@ The bytecode file is composed of the following sections:
[0:3]: function pointer (counter start at the beginning of executable code) [0:3]: function pointer (counter start at the beginning of executable code)
[4:5]: number of parameters [4:5]: number of parameters
[6:7]: number of local variables [6:7]: number of local variables
[8:b]: function size
* [0x2] Constants raw data * [0x2] Constants raw data
* [0x3] Code: executable code * [0x3] Code: executable code
* [0x4] Debugging info * [0x4] Debugging info

5
src/bytecode/bytecode.cc
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@@ -24,8 +24,8 @@ Bytecode::Bytecode(ByteArray ba)
cache_.constants_start_addr = byte_array_.get_uint32(TOC_START + (2 * TOC_RECORD_SZ)); cache_.constants_start_addr = byte_array_.get_uint32(TOC_START + (2 * TOC_RECORD_SZ));
uint32_t code_start = byte_array_.get_uint32(TOC_START + (3 * TOC_RECORD_SZ)); uint32_t code_start = byte_array_.get_uint32(TOC_START + (3 * TOC_RECORD_SZ));
for (uint32_t i = 0; i < cache_.n_functions; ++i) { for (uint32_t i = 0; i < cache_.n_functions; ++i) {
cache_.function_addr.emplace_back(code_start + byte_array_.get_uint32(cache_.functions_idx_addr + (i * 8))); cache_.function_addr.emplace_back(code_start + byte_array_.get_uint32(cache_.functions_idx_addr + (i * FUNCTION_RECORD_SZ)));
cache_.function_sz.emplace_back(0); // TODO cache_.function_sz.emplace_back(code_start + byte_array_.get_uint32(cache_.functions_idx_addr + (i * FUNCTION_RECORD_SZ) + 8));
} }
} }
@@ -117,6 +117,7 @@ ByteArray Bytecode::generate(BytecodePrototype const& bp)
functions_indexes.set_uint32(idx_idx, code_idx); functions_indexes.set_uint32(idx_idx, code_idx);
functions_indexes.set_uint16(idx_idx + 4, f.n_pars); functions_indexes.set_uint16(idx_idx + 4, f.n_pars);
functions_indexes.set_uint16(idx_idx + 6, f.n_locals); functions_indexes.set_uint16(idx_idx + 6, f.n_locals);
functions_indexes.set_uint32(idx_idx + 8, f.code.size());
raw_code.append_bytearray(f.code); raw_code.append_bytearray(f.code);
code_idx = raw_code.size(); code_idx = raw_code.size();
idx_idx += FUNCTION_RECORD_SZ; idx_idx += FUNCTION_RECORD_SZ;

2
src/bytecode/bytecode.hh
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@@ -40,7 +40,7 @@ private:
TOC_SZ = TOC_N_RECORDS * TOC_RECORD_SZ; TOC_SZ = TOC_N_RECORDS * TOC_RECORD_SZ;
static constexpr uint32_t CONST_IDX_START = TOC_START + TOC_SZ, static constexpr uint32_t CONST_IDX_START = TOC_START + TOC_SZ,
CONST_RECORD_SZ = 4; CONST_RECORD_SZ = 4;
static constexpr uint32_t FUNCTION_RECORD_SZ = 8; static constexpr uint32_t FUNCTION_RECORD_SZ = 12;
enum Sections { SEC_CONST_IDX = 0, SEC_FUNC_IDX = 1, SEC_CONST_DATA = 2, SEC_CODE = 3 }; enum Sections { SEC_CONST_IDX = 0, SEC_FUNC_IDX = 1, SEC_CONST_DATA = 2, SEC_CODE = 3 };

6
src/bytecode/tests.cc
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@@ -110,15 +110,15 @@ TEST(Bytecode, Code)
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // constant index 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // constant index
0x50, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, // variable index 0x50, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, // variable index
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // raw constants 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // raw constants
0x60, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, // raw code 0x68, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, // raw code
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// function definitions // function definitions
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00,
// code // code
0x68, 0x54, 0x42, 0x68, 0x54, 0x42,