marcothms
d5d6834a94
ft(interpreter): impl low hanging fruits
2025-07-14 18:32:32 +09:00
marcothms
aea3143b4b
fix(interpreter): allocate stack on heap
2025-07-08 17:40:57 +09:00
marcothms
20e45679fc
chore(interpreter): impl missing instructions as todo
2025-07-08 11:20:38 +09:00
marcothms
9ada099d70
chore: update readme
2025-07-08 11:19:26 +09:00
marcothms
cae4a03c26
chore: cleanup calling logic of disasm/interp
2025-07-08 10:43:02 +09:00
marcothms
8c1a07b9e6
ft: rename to i8086-rs
2025-07-08 10:42:58 +09:00
marcothms
0a1fd0e4c6
fix(interpreter): typo selected wrong byte
2025-07-08 09:35:28 +09:00
marcothms
ecbe478dcd
ft(interpreter): impl SAR
2025-07-08 09:03:16 +09:00
marcothms
be0b928a55
fix(interpreter): use correct binary name for argv[0]
2025-07-06 22:41:14 +09:00
marcothms
14a0d3d6f1
chore(interpreter): improve debug output
2025-07-06 22:36:13 +09:00
marcothms
68fb5b7b56
fix(interpreter): correctly sign extend cmp byte
2025-07-06 22:35:39 +09:00
marcothms
aba85c9a48
fix(interpreter): invalid operator precendece for padding byte
2025-07-05 00:04:35 +09:00
marcothms
89634e50c4
fix(interpreter): load prog name as argv[0]
2025-07-04 15:05:18 +09:00
marcothms
6c593a8d1e
fix(interpreter): fix jg jump condition
2025-07-02 20:58:57 +09:00
marcothms
4e23d9419b
fix(interpreter): write to correct 8bit regs
2025-07-02 20:58:39 +09:00
marcothms
4adb975b69
fix(interpreter): actually xchg into AX
2025-07-02 20:41:34 +09:00
marcothms
803c6267d2
ft(interpreter): impl mul and div
2025-07-02 20:32:13 +09:00
marcothms
60b5b6bd51
chore(interpreter): correctly sign extend for CBW/CWD intructions
2025-07-02 17:46:15 +09:00
marcothms
6d60343067
ft(interpreter): impl ret with immediate
2025-07-02 17:38:48 +09:00
marcothms
f665390854
fix(interpreter): add missing continue for jmp %reg instructions
2025-07-02 17:31:51 +09:00
marcothms
aee5f0b6d7
ft(interpreter): impl custom partialord and ord for immediateoperand
...
The derived one treated Byte(1) < Word(2) as true, which is not
the desired behaviour.
2025-07-02 17:16:26 +09:00
marcothms
709d2a2639
fix(interpreter): fix safeguard for memory write_raw()
2025-07-02 17:16:01 +09:00
marcothms
cf3383c23a
fix(interpreter): set flags correctly for inc/dec/neg
2025-07-02 17:15:40 +09:00
marcothms
4f161f47f6
ft(interpreter): expand interrupt functionality
...
Implement mess2 type, as well as return m_type for existing
and new interrupts.
TODO:
save pointer to message data, as the current write is redundant.
2025-07-02 17:14:05 +09:00
marcothms
5a81bbf43a
chore(interpreter): handle errors during fetch
2025-07-02 17:12:19 +09:00
marcothms
09a03ab558
chore: simplify info and debug output
2025-07-02 17:10:55 +09:00
marcothms
f6447df90e
fix(interpreter): set flags correctly for shifts
2025-07-02 17:09:43 +09:00
marcothms
3ce0a461ca
fix(interpreter): fix stack setup
2025-07-02 17:07:37 +09:00
marcothms
0a55b5a68b
fix(interrupt): parse correct amount of data
2025-07-01 12:20:23 +09:00
marcothms
a5cffa4852
fix(interpreter): impl fetch and decode
...
I parsed all instructions before executing, but this is not how
intel works.
We need to decode the instructions, pointed to by IP, on the fly.
2025-07-01 12:08:28 +09:00
marcothms
f3fd655908
ft(interpreter): expose data to memory
2025-07-01 11:00:22 +09:00
marcothms
13cb907977
ft(interpreter): impl simple stack init
2025-07-01 09:46:06 +09:00
marcothms
0db309b668
chore(main): dont log path
2025-06-18 21:25:17 +09:00
marcothms
4f3d864179
chore(interpreter): move memory access functions to computer
...
This is mainly to ease the usage of memory access functions, meaning
leaner access of memory with general resulution of memory accesses via
the MemoryIndex struct.
2025-06-18 21:04:41 +09:00
marcothms
79dc560689
chore(interpreter): rewrite displacement memoryindex logic
...
Previously, the displacement for a MemoryIndex was directly interpreted
and saved as a signed value.
Change this to the normal unsigned ImmediateOperand version to allow
for more flexible usage of this struct for general memoryaccess (future
commit) and just interpret the displacement member as signed, only when
being interpreted as such (memory access, display, ....
2025-06-18 20:35:23 +09:00
marcothms
5a61eb5fd6
ft(interpreter): use DS and SS sregs as correct segment offsets
2025-06-18 20:35:23 +09:00
marcothms
4aeacc649a
ft(interpreter): impl far jumps with correct CS addressing
2025-06-18 20:35:04 +09:00
marcothms
6678a1ef4a
chore(interpreter): fix small bugs
2025-06-18 20:33:52 +09:00
marcothms
53262f9e3e
ft(interpreter): impl shift and rotate
2025-06-18 20:33:52 +09:00
marcothms
7d5f891a93
ft: use instructionwidth instead of immediateoperand
...
Previously an immediate operand with data of 0 was use to encode
width, now use a dedicated enum for improved clarity.
2025-06-18 20:33:52 +09:00
marcothms
18cc460d40
ft: impl ret
2025-06-18 20:33:52 +09:00
marcothms
7f4d79d840
fix(interpreter): always read word from memory
...
It's not possible to know if a word or byte is requested, or rather
it would be a pain to retrieve that information.
It is much easier to just read a full word and then discard the top
half, if just a byte is needed.
2025-06-18 20:33:52 +09:00
marcothms
200640447b
ft(interpreter): impl basic call
2025-06-18 20:33:52 +09:00
marcothms
7e7e648fa8
fix(interpreter): wrong le byte order on pop
2025-06-18 20:33:52 +09:00
marcothms
1f5e175c68
chore(interpreter): rename Operand -> ArithmeticOperand
2025-06-18 20:33:52 +09:00
marcothms
5fab099cd8
ft(interpreter): impl push/pop
2025-06-18 20:33:52 +09:00
marcothms
d1ea96edd8
Update README.md
2025-06-17 16:40:24 +02:00
marcothms
bc9df97ea7
Update README.md
2025-06-17 15:35:13 +02:00
marcothms
5942270f63
ft(interpreter): impl all low-hanging fruit instructions
2025-06-11 23:29:34 +09:00
marcothms
4cea76bd1c
chore(interpreter): always sign-extend ImmediateOperand::Byte when cast
2025-06-11 17:40:38 +09:00
marcothms