writeOpcode

Zero-operand instructions

Function parameters

Parameters

writer:anytype
opcode:u8

Expressions can be evaluated in different contexts, each requiring its own set of inputs.

Types

Context: Expressions can be evaluated in different contexts, each requiring its own set of inputs.
Options

A stack machine that can decode and run DWARF expressions.

Functions

StackMachine: A stack machine that can decode and run DWARF expressions.
Builder

Error sets in this namespace

Error Sets

Error

Source

Implementation

pub fn writeOpcode(writer: anytype, comptime opcode: u8) !void {
    if (options.call_frame_context and !comptime isOpcodeValidInCFA(opcode)) return error.InvalidCFAOpcode;
    switch (opcode) {
        OP.dup,
        OP.drop,
        OP.over,
        OP.swap,
        OP.rot,
        OP.deref,
        OP.xderef,
        OP.push_object_address,
        OP.form_tls_address,
        OP.call_frame_cfa,
        OP.abs,
        OP.@"and",
        OP.div,
        OP.minus,
        OP.mod,
        OP.mul,
        OP.neg,
        OP.not,
        OP.@"or",
        OP.plus,
        OP.shl,
        OP.shr,
        OP.shra,
        OP.xor,
        OP.le,
        OP.ge,
        OP.eq,
        OP.lt,
        OP.gt,
        OP.ne,
        OP.nop,
        OP.stack_value,
        => try writer.writeByte(opcode),
        else => @compileError("This opcode requires operands, use `write<Opcode>()` instead"),
    }
}