 glm94
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82b2136a69
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Started to work on setting up Symbol value resolution which will be based on an abstract syntax tree that can handle undefined values if unknown symbols are used in an expression.
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2023-08-25 00:21:19 -05:00 |
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glm94
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4bb90da6df
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Make the compiler options a bit more strict about C compliance (in other words I just learned about these flags and they seem to be ideal for this project).
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2023-08-25 00:15:18 -05:00 |
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glm94
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4af2527806
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Updated the structure of symbols and tokens to hopefully help make computing symbol values easier.
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2023-08-07 01:18:01 -05:00 |
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glm94
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65383cded2
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Updated the way symbols are represented and how they are marked as resolved.
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2023-07-09 22:04:55 -05:00 |
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glm94
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9c8fe17c8f
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Minor code cleanup and added an extra flag to the compiler. If a symbol is a label it will now hold a reference to the opcode and by extension the offset into the file it points to.
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2023-07-06 19:39:03 -05:00 |
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glm94
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3031fa8b9b
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Code cleanup.
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2023-06-29 20:53:39 -05:00 |
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glm94
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2918f2964d
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Fixed a bug where words weren't being written to 'memory' correctly.
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2023-06-24 18:00:13 -05:00 |
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glm94
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980b0449fc
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Fixed a bug with the parse discarding identifier tokens when parsing a COPY instruction. Added the first batch of code to encode the final token array to a binary form.
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2023-06-22 20:22:20 -05:00 |
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glm94
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6741dde7ce
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Hooked up the program counter in the parser to set the memory offset of symbols, well labels to be more acurrate.
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2023-06-18 14:51:37 -05:00 |
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glm94
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c6e6e2c5dc
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Fixed a bug in the parser not setting an identifier when one is used with a CMP and fixed a bug in the example assembly program.
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2023-06-18 12:11:30 -05:00 |
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glm94
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0eaa5527ea
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Updated the parser to be able to handle the changes made to the ISA.
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2023-06-18 00:50:18 -05:00 |
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glm94
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403439def4
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Updated the opcode listing and 'fixed' the code to at least compile, but obviously I'll need to rework how the new copy instructions are to be parsed. Fixed some errors in the documentation where I skipped some hex numbers and added a copy immediate op.
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2023-06-17 21:15:08 -05:00 |
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glm94
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0fd6413d81
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Updated the instruction set and mapped out the opcodes as well as wrote a sample program to see if the ISA was complete enough to build a trivial program.
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2023-06-17 16:56:42 -05:00 |
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glm94
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a9e57132be
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Fixed issue #1 Scanner Bug where the start of comment would become part of an identifier or throw off number parsing.
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2023-04-14 13:28:44 -05:00 |
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glm94
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aa3888b578
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Fixed up the RemoveCurrentToken function which was causing all sorts of bugs, and added the ability to delcare a data byte, '.db', to have a variable's address as a value. This will be needed for building up an interrupt table at least with the version I have in mind.
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2023-04-04 22:14:17 -05:00 |
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glm94
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c3d12da54a
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Added some ideas to the encoding scheme to be used by the processor.
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2023-03-30 13:21:25 -05:00 |
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glm94
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288ba9f9cb
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Updated the docs to include new jump operands and setup the assembler to handle parsing all the jump instructions.
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2023-03-29 22:30:12 -05:00 |
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glm94
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a9a50055a4
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Updated the parser to validate most of the opcodes. NOP falls through via the default case since it takes no parameters but the jump instructions need some thought before proceeding.
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2023-03-29 20:57:04 -05:00 |
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glm94
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2e888913be
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Added support for the STORE directive.
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2023-03-29 12:57:07 -05:00 |
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glm94
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ee60d14570
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Refactored the code and added expect functions to make the code flow a bit nicer.
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2023-03-29 12:41:53 -05:00 |
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glm94
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fa12a04bb3
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Moved some of the grunt work to their own functions to clean the code up a bit.
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2023-03-28 22:14:31 -05:00 |
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glm94
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2d7aad1617
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Fixed a bug with labels not advancing the parser after being processed resulting in a redefinition error.
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2023-03-28 12:41:56 -05:00 |
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glm94
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ae03991fa5
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Fixed some parser bugs processing the syntax for some LOAD instruction types.
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2023-03-27 22:22:01 -05:00 |
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glm94
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95ed2143ea
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Updated the parser to handle processing a simple load byte instruction. Added the LODB opcode to the opcode enum listing and updated the Scanner to look for 'byte' and mark it as a directive.
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2023-03-24 23:24:24 -05:00 |
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glm94
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f96e1c6380
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Added grammar checking for DB declarations.
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2023-03-08 21:38:33 -06:00 |
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glm94
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4f9f4202b2
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Wrote the first batch of directive handling code, so far just handling creating variables.
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2023-03-08 13:25:46 -06:00 |
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glm94
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4230708f15
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Added a function to remove an item from the generic list, which is mainly used for the tokens.
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2023-03-07 21:31:14 -06:00 |
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glm94
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5e9e1bdec4
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Massive refactoring to simplify this whole setup. The Token List will be modified in place and reused in the Parser to normalize the list and generate a symbols table. Normalizing the token list will make sure the syntax is valid and the symbols table will have the relative offsets and length of symbol values. At least this is all the plan but one step at a time.
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2023-03-06 21:51:36 -06:00 |
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glm94
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1b246e90bc
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Started rethinking how this machine should behave. Updated and refactoring some things with a few new ideas.
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2023-02-23 22:22:07 -06:00 |
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glm94
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9a602824b6
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Added all the instructions supported to a structure to help make validation of parameters easier.
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2022-10-18 21:14:50 -05:00 |
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glm94
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6d6bf1cbaf
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Wrote the first step for the binary output. Doesn't handle instruction pointer symbols yet since those emit addresses that still need to be computed.
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2022-10-10 18:36:38 +00:00 |
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glm94
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bca2ad67f1
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Fixed a bug with single parameter instructions that land at the end of a file expecting a comma.
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2022-10-08 22:02:51 -05:00 |
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glm94
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fd44e03b1b
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Updated the Parser to try and give 'AddressParameter's more meaning depending on the SymbolType.
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2022-10-08 18:21:11 -05:00 |
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glm94
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48a77950be
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Updated the way string symbols are handled, allowing the programmer to terminate a string with any byte or none at all.
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2022-10-08 16:35:05 -05:00 |
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glm94
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8b6edc39be
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Updated the Parser to handle the variable declaration directive.
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2022-10-08 16:15:10 -05:00 |
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glm94
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c142d2c6d0
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Cleaned up the Symbol struct and updated code accordingly.
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2022-10-08 14:43:00 -05:00 |
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glm94
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4b08707e67
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Cleaned up the list implementation so as to NOT copy items into a new buffer.
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2022-10-07 20:46:55 +00:00 |
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glm94
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bdb4d2b241
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Updated the way Instructions keep track of symbols. Only their name is important but we need the Symbols to be able to track which Instruction they point to (if they do that is, i.e. a label symbol).
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2022-10-06 21:11:22 -05:00 |
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glm94
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d53833c25f
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Added some debug print out for the instruction list and a helper function to get a string for any Registers enum.
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2022-10-06 21:05:57 +00:00 |
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glm94
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f38da9cc74
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A bit of cleanup.
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2022-10-04 21:05:15 +00:00 |
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glm94
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33309a2759
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Updated the Instruction's structure and updated the Parser accordingly.
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2022-10-04 20:37:47 +00:00 |
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glm94
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1f7989533b
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Fixed a bug in the SymbolsTable where it wouldn't update its size.
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2022-10-03 20:11:04 -05:00 |
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glm94
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cd1258a724
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Fixed various Parser bugs.
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2022-10-03 19:58:44 -05:00 |
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glm94
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be91e3c112
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Updated the parser to better handle parameters, sort of and including a string length assembly program to use as a test for the whole assembler.
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2022-10-03 21:26:28 +00:00 |
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glm94
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706f480e31
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The Scanner will now check for empty lines (is the previous token and the current token a new line?) and simply not emit a NewLine Token.
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2022-10-03 19:40:00 +00:00 |
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glm94
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a949007c75
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Updated the ISA so the program will correctly see things like 'load', 'inc' and 'dec'.
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2022-10-03 16:56:39 +00:00 |
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glm94
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a0d5d62a34
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Fixed a bug in the Scanner when parsing a hex number, still not super robust but it'll work.
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2022-10-03 15:20:31 +00:00 |
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glm94
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f7cd87f13f
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Started reworking the Parser to simplify how instructions will be represented. It will act like a 'first pass' that will do grammar checks but not verify the parameters of the opcodes.
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2022-10-02 22:54:18 -05:00 |
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glm94
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55f4c32764
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Missed this for the Scanner fix.
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2022-10-02 22:12:16 -05:00 |
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glm94
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097eca383b
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Fixed a bug with the Scanner adding a blank line via a single NewLine Token when a file starts with a block of comments.
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2022-10-01 20:43:55 -05:00 |
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