shooshx / corewars8086_js Goto Github PK

code:

PUSH DS
POP ES
MOV DI, AX
MOV AX, 0xCCCC
again:
STOSW
ADD WORD DI, 0xB
JMP agaijjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

without newline at the end

A few months ago it was possible to edit the CS by clicking on a byte in the arena and start typing. Was it removed?

This problem has already been opened, but I wanted to generalize it and elaborate on the situation.

This command should write the contents of x1 into the address that comes 128 bytes after the address x2 point to, but instead, it writes it exactly to the address x2 points to.

I also tried to use 64 instead of 128 but the same behaviour was observed.

When debugging, macros are not shown correctly.
For example:

Will be shown as:

Note: the instructions are executed but it's just shown as 0xCC.

כשמעלים קובץ מקומפל הדיבאגר עושה לו דיקומפילציה ומריץ אותו בתור קוד שונה מהקוד מקור (בלי דיפיינס וכו') בניגוד לדיבאגר של קוד גורו שבו אפשר להריץ קודים מקומפלים.

IMHO a simple, interactive user friendly, step-by-step tutorial (Something you can give a middle-schooler who has minimal experience with programming and he'll be able to find his way around the simulator and create a basic survivor) will provide a lot of value to this simulator.

Perhaps we can use something like https://introjs.com/ or https://tourjs.github.io/tour/

https://www.graalvm.org/docs/getting-started/#native-images

while debugging - I cannot see the instruction being executed, nor can I view the code I debug, (the address in the arena in the disassembly window start with 0000, and I cannot view the code of the survivors/zombies).
Thanks

The instruction set of "ADD [disp], reg" (e.g. "ADD [0x50], AL") is compiled as "00 06 50 00 " instead of "00 05 50 00 00 00".
An ADD instruction where the reg or rm is only a displacement without a register should have the rem section set to 101 (binary), not 110. (Reference: x86 Encoding Add edx, displacement )

I think the bug arises from this function:

After the bnez and beqz instruction, regardless of register and offset used, 0xCCCC is inserted.

For example, for this editor code:

This code is shown in debug mode:

After the latest update, the competition panel is no longer working.
I'm using Firefox 84.0.2.

need to add newline at the end

As it says in the official specifications:

C.JR (jump register) performs an unconditional control transfer to the address in register rs1. C.JR Rexpands to jalr x0, rs1, 0.

Despite this, using jr will behave like j, jumping by the value in the register from the current location.