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Made README readable

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Veit Heller
2014-09-17 18:44:27 +02:00
parent af1f2a191e
commit 7361fb26dc
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vvm/README.md
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@@ -14,43 +14,70 @@ I\* prefix).
* IADD - Adds the two items to each other that are on top of the stack * IADD - Adds the two items to each other that are on top of the stack
and stores the result on top of the stack. and stores the result on top of the stack.
* ISUB - Subtracts the two items from each other that are on top of the * ISUB - Subtracts the two items from each other that are on top of the
stack and stores the result on top of the stack. stack and stores the result on top of the stack.
* IMULT - Multiplies the two items to each other that are on top of the * IMULT - Multiplies the two items to each other that are on top of the
stack and stores the result on top of the stack. stack and stores the result on top of the stack.
* IDIV - Performs a division operation to the two items that are on top * IDIV - Performs a division operation to the two items that are on top
of the stack and stores the result on top of the stack. of the stack and stores the result on top of the stack.
* IMOD - Performs a modulo operation to the two items that are on top * IMOD - Performs a modulo operation to the two items that are on top
of the stack and stores the result on top of the stack. of the stack and stores the result on top of the stack.
* ILT - Checks whether the item on top of the stack is greater than the * ILT - Checks whether the item on top of the stack is greater than the
item below it and stores a boolean on top of the stack. item below it and stores a boolean on top of the stack.
* IEQ - Checks whether the item on top of the stack is equal to the * IEQ - Checks whether the item on top of the stack is equal to the
item below it and stores a boolean on top of the stack. item below it and stores a boolean on top of the stack.
* IGT - Checks whether the item on top of the stack is smaller than the * IGT - Checks whether the item on top of the stack is smaller than the
item below it and stores a boolean on top of the stack. item below it and stores a boolean on top of the stack.
* ILEQ - Checks whether the item on top of the stack is smaller than or * ILEQ - Checks whether the item on top of the stack is smaller than or
equal to the item below it and stores a boolean on top of the stack. equal to the item below it and stores a boolean on top of the stack.
* IGEQ - Checks whether the item on top of the stack is greater than or * IGEQ - Checks whether the item on top of the stack is greater than or
equal to the item below it and stores a boolean on top of the stack. equal to the item below it and stores a boolean on top of the stack.
* BR - Jumps to the instruction that is provided as an argument. * BR - Jumps to the instruction that is provided as an argument.
* BRT - Jumps to the instruction that is provided as an argument if the * BRT - Jumps to the instruction that is provided as an argument if the
value on top of the stack is TRUE. value on top of the stack is TRUE.
* BRF - Jumps to the instruction that is provided as an argument if the * BRF - Jumps to the instruction that is provided as an argument if the
value on top of the stack is FALSE. value on top of the stack is FALSE.
* ICONST - Puts the argument provided to the operation on top of the * ICONST - Puts the argument provided to the operation on top of the
stack. stack.
* LOAD - Loads an element from any position on the stack on top of the * LOAD - Loads an element from any position on the stack on top of the
stack(usually used to get function arguments like this: LOAD -3). stack(usually used to get function arguments like this: LOAD -3).
* GLOAD - Loads an element from any position on the data segment on * GLOAD - Loads an element from any position on the data segment on
top of the stack. top of the stack.
* STORE - Stores an element on the stack. * STORE - Stores an element on the stack.
* GSTORE - Stores an element in the data segment. * GSTORE - Stores an element in the data segment.
* PRINT - Prints the element on top of the stack as character. * PRINT - Prints the element on top of the stack as character.
* IPRINT - Prints the element on top of the stack as integer. * IPRINT - Prints the element on top of the stack as integer.
* POP - Pops the element on top of the stack. * POP - Pops the element on top of the stack.
* HALT - Ends the program. * HALT - Ends the program.
* CALL - calls a subroutine with a number of arguments. * CALL - calls a subroutine with a number of arguments.
* RET - Returns from a subroutine with a return value. * RET - Returns from a subroutine with a return value.
* FETCH - Fetches a value. * FETCH - Fetches a value.
* IINC -Increments the value on top of the stack by one(equal to ++). * IINC -Increments the value on top of the stack by one(equal to ++).
* IDEC -Decrements the value on top of the stack by one(equal to --). * IDEC -Decrements the value on top of the stack by one(equal to --).