46 lines
6.9 KiB
Markdown
46 lines
6.9 KiB
Markdown
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# Common Assembler Mnemonics
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The following table lists a set of practial mnemonics for the use in an assembly language.
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Each mnemonic declares a specific configuration of an instruction.
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| Mnemonic | Arg? | i0 | i1 | Cmd | CmdInfo | Output | Flags? | Description 1 |
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|----------|------|------|------|---------|----------|---------|--------|-------------------------------------------------------------------------------------------------|
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| nop | no | zero | zero | copy | 0 | discard | no | Does noting |
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| push | yes | arg | zero | copy | 0 | push | no | Pushes its argument on the stack |
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| drop | no | pop | zero | copy | 0 | discard | no | Removes the top value from the stack |
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| dup | no | peek | zero | copy | 0 | push | no | Duplicates the top value on the stack. |
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| jmp | yes | arg | zero | copy | 0 | jump | no | Jumps to its argument. |
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| jmpi | no | pop | zero | copy | 0 | jump | no | Pops a value from the stack and jumps to it. |
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| ret | no | pop | zero | copy | 0 | jump | no | Pops a value from the stack and jumps to it. |
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| load | yes | arg | zero | load | 0 | push | no | Loads the value located at the argument from memory. |
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| loadi | no | pop | zero | load | 0 | push | no | Pops an address from the stack and loads the value from memory. |
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| store | yes | arg | pop | store | 0 | discard | no | Pops a value and stores it in memory at the argument address. |
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| storei | no | pop | pop | store | 0 | discard | no | First, pops an address from the stack, then a value. Stores the value at the address. |
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| get | yes | arg | zero | get | 0 | push | no | Pushes the value at the given base pointer offset at the stack. |
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| geti | no | pop | zero | get | 0 | push | no | Pops an offset from the stack, then pushes the value at the popped base pointer offset. |
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| set | yes | arg | pop | set | 0 | discard | no | Pops a value from the stack and copies it to the given stack offset. |
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| seti | no | pop | pop | set | 0 | discard | no | Pops an offset from the stack, then a value. Stores the value at the given offset on the stack. |
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| bpget | no | zero | zero | bpget | 0 | push | no | Pushes the current base pointer. |
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| bpset | no | pop | zero | bpset | 0 | discard | no | Pops a value and sets the base pointer. |
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| spget | no | zero | zero | spget | 0 | push | no | Pushes the current stack pointer. |
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| spset | no | pop | zero | spset | 0 | discard | no | Pops a value and sets the stack pointer. |
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| cpget | no | zero | zero | cpget | 1 | push | no | Pushes the address of the second-next instruction. |
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| add | no | pop | pop | math | 0 | push | no | Pops two values and pushes the sum. |
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| sub | no | pop | pop | math | 1 | push | no | Pops two values and pushes the difference. |
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| cmp | no | pop | pop | math | 1 | discard | yes | Pops two values and subtracts them. Discards the result, but modifies the flags. |
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| mul | no | pop | pop | math | 2 | push | no | Pops two values and pushes the product. |
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| div | no | pop | pop | math | 3 | push | no | Pops two values and pushes the quotient. |
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| mod | no | pop | pop | math | 4 | push | no | Pops two values and pushes the euclidean quotient. |
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| and | no | pop | pop | math | 5 | push | no | Pops two values and pushes the bitwise and. |
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| or | no | pop | pop | math | 6 | push | no | Pops two values and pushes the bitwise or. |
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| xor | no | pop | pop | math | 7 | push | no | Pops two values and pushes the exclusive or. |
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| not | no | pop | zero | math | 8 | push | no | Pops a single value and pushes the bitwise not |
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| rol | no | pop | pop | math | 9 | push | no | TO BE SPECIFIED |
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| ror | no | pop | pop | math | 10 | push | no | TO BE SPECIFIED |
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| asl | no | pop | pop | math | 11 | push | no | TO BE SPECIFIED |
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| asr | no | pop | pop | math | 12 | push | no | TO BE SPECIFIED |
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| shl | no | pop | pop | math | 13 | push | no | TO BE SPECIFIED |
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| shr | no | pop | pop | math | 14 | push | no | TO BE SPECIFIED |
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| syscall | yes | zero | zero | syscall | 0 | discard | no | Mnemonic for a generic syscall. |
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| hwio | yes | zero | zero | hwio | 0 | discard | no | Mnemonic for a generic hwio. |
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