andre/tyche
1
0
Fork 0
Code Pull Requests Actions Packages Releases Activity

.

Browse Source
This commit is contained in:
Andre Wagner
2026-04-28 17:19:05 -05:00
parent a91e65dc84
commit 9092a7ea64
4 changed files with 8 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
doc/BYTECODE
View File

@@ -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)
[4:5]: number of parameters
[6:7]: number of local variables
[8:b]: function size
* [0x2] Constants raw data
* [0x3] Code: executable code
* [0x4] Debugging info

5
src/bytecode/bytecode.cc
View File

@@ -24,8 +24,8 @@ Bytecode::Bytecode(ByteArray ba)
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));
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_sz.emplace_back(0); // TODO
cache_.function_addr.emplace_back(code_start + byte_array_.get_uint32(cache_.functions_idx_addr + (i * FUNCTION_RECORD_SZ)));
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_uint16(idx_idx + 4, f.n_pars);
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);
code_idx = raw_code.size();
idx_idx += FUNCTION_RECORD_SZ;

2
src/bytecode/bytecode.hh
View File

@@ -40,7 +40,7 @@ private:
TOC_SZ = TOC_N_RECORDS * TOC_RECORD_SZ;
static constexpr uint32_t CONST_IDX_START = TOC_START + TOC_SZ,
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 };

6
src/bytecode/tests.cc
View File

@@ -110,15 +110,15 @@ TEST(Bytecode, Code)
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // constant index
0x50, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, // variable index
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,
// function definitions
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00,
// code
0x68, 0x54, 0x42,