diff options
| author | dec05eba <dec05eba@protonmail.com> | 2019-08-24 00:48:40 +0200 |
|---|---|---|
| committer | dec05eba <dec05eba@protonmail.com> | 2020-07-25 14:36:46 +0200 |
| commit | 7212ea877ed85d3b85af90c902639df44fc493f2 (patch) | |
| tree | c76d73e9882a832f82cef977efb6fb26fb0e4984 /doc | |
| parent | d6f368a3f400fea3e89280262a8147e7ce5d855c (diff) | |
Add exported variable (only functions for now), export main func, start execution from main func
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/Documentation.md | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/doc/Documentation.md b/doc/Documentation.md index 79e81aa..8b2133e 100644 --- a/doc/Documentation.md +++ b/doc/Documentation.md @@ -15,7 +15,7 @@ Instructions can be in 7 different formats: 6.1 Opcode(u8) + register(i8) + offset(i16)\ 6.2 Opcode(u8) + register(i8) + intermediate(u16)\ 6.3 Opcode(u8) + register(i8) + data(u16)\ -6.4 Opcode(u8) + num_param_reg(u8) + num_local_var_reg(u16) +6.4 Opcode(u8) + flags(u8) + num_local_var_reg(u16) 7. 5 bytes: Opcode(u8) + index(u16) + num_args(u8) + register(i8) ## Registers Registers have a range of 128. Local variables start from register 0 and increment while parameters start from -1 @@ -29,7 +29,7 @@ and writing it to a file, which is an IO bottlenecked operation and it won't ben and may even lose performance because of it. # Bytecode -The layout of the full bytecode is: Header (Intermediates Strings Functions External_Functions Instructions)* +The layout of the full bytecode is: Header (Intermediates Strings Functions External_Functions Exported_Functions Instructions)* # Bytecode header ## Header layout @@ -90,6 +90,22 @@ The versions in the header only changes for every release, not every change. |u8 |name_len|The length of the external function name, in bytes. Excluding the null-terminate character. | |u8* |name |The name of the external function, where the size is defined by @name_len. Names are null-terminated.| +# Bytecode exported functions +## Exported functions layout +|Type |Field |Description | +|-----------------|------------------|-----------------------------------------------------------------------------------------| +|u16 |num_export_func |The number of exported functions. | +|u32 |export_funcs_size |The size of the exported functions section, in bytes. | +|Exported function|Exported functions|Multiple exported functions, where the number of functions is defined by @num_export_func| + +## Exported function +|Type|Field |Description | +|----|------------------|--------------------------------------------------------------------------------------------------------------------------| +|u32 |instruction_offset|The offset in the instruction data where the exported function is defined. Is always 0 until the program has been started.| +|u8 |num_args |The number of arguments the functions has. | +|u8 |name_len |The length of the exported function name, in bytes. Excluding the null-terminate character. | +|u8* |name |The name of the exported function, where the size is defined by @name_len. Names are null-terminated. | + # Bytecode instructions ## Instructions layout |Type |Field |Description | |