forked from AbleOS/holey-bytes
103 lines
3.2 KiB
Rust
103 lines
3.2 KiB
Rust
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#![no_std]
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macro_rules! constmod {
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($vis:vis $mname:ident($repr:ty) {
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$(#![doc = $mdoc:literal])?
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$($cname:ident = $val:expr $(,$doc:literal)?;)*
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}) => {
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$(#[doc = $mdoc])?
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$vis mod $mname {
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$(
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$(#[doc = $doc])?
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pub const $cname: $repr = $val;
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)*
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}
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};
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}
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constmod!(pub opcode(u8) {
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//! Opcode constant module
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NOP = 0, "N; Do nothing";
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ADD = 1, "BBB; #0 ← #1 + #2";
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SUB = 2, "BBB; #0 ← #1 - #2";
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MUL = 3, "BBB; #0 ← #1 × #2";
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AND = 4, "BBB; #0 ← #1 & #2";
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OR = 5, "BBB; #0 ← #1 | #2";
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XOR = 6, "BBB; #0 ← #1 ^ #2";
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SL = 7, "BBB; #0 ← #1 « #2";
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SR = 8, "BBB; #0 ← #1 » #2";
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SRS = 9, "BBB; #0 ← #1 » #2 (signed)";
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CMP = 10, "BBB; #0 ← #1 <=> #2";
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CMPU = 11, "BBB; #0 ← #1 <=> #2 (unsigned)";
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DIR = 12, "BBBB; #0 ← #2 / #3, #1 ← #2 % #3";
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NEG = 13, "BB; #0 ← ~#1";
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NOT = 14, "BB; #0 ← !#1";
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ADDI = 15, "BBD; #0 ← #1 + imm #2";
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MULI = 16, "BBD; #0 ← #1 × imm #2";
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ANDI = 17, "BBD; #0 ← #1 & imm #2";
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ORI = 18, "BBD; #0 ← #1 | imm #2";
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XORI = 19, "BBD; #0 ← #1 ^ imm #2";
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SLI = 20, "BBD; #0 ← #1 « imm #2";
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SRI = 21, "BBD; #0 ← #1 » imm #2";
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SRSI = 22, "BBD; #0 ← #1 » imm #2 (signed)";
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CMPI = 23, "BBD; #0 ← #1 <=> imm #2";
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CMPUI = 24, "BBD; #0 ← #1 <=> imm #2 (unsigned)";
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CP = 25, "BB; Copy #0 ← #1";
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SWA = 26, "BB; Swap #0 and #1";
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LI = 27, "BD; #0 ← imm #1";
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LD = 28, "BBDB; #0 ← [#1 + imm #3], imm #4 bytes, overflowing";
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ST = 29, "BBDB; [#1 + imm #3] ← #0, imm #4 bytes, overflowing";
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BMC = 30, "BBD; [#0] ← [#1], imm #2 bytes";
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BRC = 31, "BBB; #0 ← #1, imm #2 registers";
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JMP = 32, "BD; Unconditional jump [#0 + imm #1]";
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JEQ = 33, "BBD; if #0 = #1 → jump imm #2";
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JNE = 34, "BBD; if #0 ≠ #1 → jump imm #2";
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JLT = 35, "BBD; if #0 < #1 → jump imm #2";
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JGT = 36, "BBD; if #0 > #1 → jump imm #2";
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JLTU = 37, "BBD; if #0 < #1 → jump imm #2 (unsigned)";
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JGTU = 38, "BBD; if #0 > #1 → jump imm #2 (unsigned)";
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ECALL = 39, "N; Issue system call";
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ADDF = 40, "BBB; #0 ← #1 +. #2";
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MULF = 41, "BBB; #0 ← #1 +. #2";
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DIRF = 42, "BBBB; #0 ← #2 / #3, #1 ← #2 % #3";
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ADDFI = 43, "BBD; #0 ← #1 +. imm #2";
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MULFI = 44, "BBD; #0 ← #1 *. imm #2";
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});
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#[repr(packed)]
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pub struct ParamBBBB(pub u8, pub u8, pub u8, pub u8);
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#[repr(packed)]
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pub struct ParamBBB(pub u8, pub u8, pub u8);
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#[repr(packed)]
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pub struct ParamBBDH(pub u8, pub u8, pub u64, pub u16);
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#[repr(packed)]
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pub struct ParamBBD(pub u8, pub u8, pub u64);
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#[repr(packed)]
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pub struct ParamBB(pub u8, pub u8);
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#[repr(packed)]
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pub struct ParamBD(pub u8, pub u64);
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/// # Safety
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/// Has to be valid to be decoded from bytecode.
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pub unsafe trait OpParam {}
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unsafe impl OpParam for ParamBBBB {}
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unsafe impl OpParam for ParamBBB {}
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unsafe impl OpParam for ParamBBDH {}
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unsafe impl OpParam for ParamBBD {}
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unsafe impl OpParam for ParamBB {}
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unsafe impl OpParam for ParamBD {}
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unsafe impl OpParam for u64 {}
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unsafe impl OpParam for () {}
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