forked from AbleOS/holey-bytes
Merge branch 'master' of ssh://git.ablecorp.us:20/AbleOS/holey-bytes
This commit is contained in:
commit
dff2542612
33
Cargo.lock
generated
33
Cargo.lock
generated
|
|
@ -165,12 +165,9 @@ dependencies = [
|
|||
|
||||
[[package]]
|
||||
name = "log"
|
||||
version = "0.4.17"
|
||||
version = "0.4.19"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
]
|
||||
checksum = "b06a4cde4c0f271a446782e3eff8de789548ce57dbc8eca9292c27f4a42004b4"
|
||||
|
||||
[[package]]
|
||||
name = "logos"
|
||||
|
|
@ -192,7 +189,7 @@ dependencies = [
|
|||
"proc-macro2",
|
||||
"quote",
|
||||
"regex-syntax",
|
||||
"syn 2.0.18",
|
||||
"syn 2.0.25",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
|
|
@ -206,30 +203,30 @@ dependencies = [
|
|||
|
||||
[[package]]
|
||||
name = "once_cell"
|
||||
version = "1.17.1"
|
||||
version = "1.18.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b7e5500299e16ebb147ae15a00a942af264cf3688f47923b8fc2cd5858f23ad3"
|
||||
checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d"
|
||||
|
||||
[[package]]
|
||||
name = "paste"
|
||||
version = "1.0.12"
|
||||
version = "1.0.13"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9f746c4065a8fa3fe23974dd82f15431cc8d40779821001404d10d2e79ca7d79"
|
||||
checksum = "b4b27ab7be369122c218afc2079489cdcb4b517c0a3fc386ff11e1fedfcc2b35"
|
||||
|
||||
[[package]]
|
||||
name = "proc-macro2"
|
||||
version = "1.0.59"
|
||||
version = "1.0.64"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "6aeca18b86b413c660b781aa319e4e2648a3e6f9eadc9b47e9038e6fe9f3451b"
|
||||
checksum = "78803b62cbf1f46fde80d7c0e803111524b9877184cfe7c3033659490ac7a7da"
|
||||
dependencies = [
|
||||
"unicode-ident",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "quote"
|
||||
version = "1.0.28"
|
||||
version = "1.0.29"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1b9ab9c7eadfd8df19006f1cf1a4aed13540ed5cbc047010ece5826e10825488"
|
||||
checksum = "573015e8ab27661678357f27dc26460738fd2b6c86e46f386fde94cb5d913105"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
]
|
||||
|
|
@ -274,9 +271,9 @@ dependencies = [
|
|||
|
||||
[[package]]
|
||||
name = "syn"
|
||||
version = "2.0.18"
|
||||
version = "2.0.25"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "32d41677bcbe24c20c52e7c70b0d8db04134c5d1066bf98662e2871ad200ea3e"
|
||||
checksum = "15e3fc8c0c74267e2df136e5e5fb656a464158aa57624053375eb9c8c6e25ae2"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
|
|
@ -285,9 +282,9 @@ dependencies = [
|
|||
|
||||
[[package]]
|
||||
name = "unicode-ident"
|
||||
version = "1.0.9"
|
||||
version = "1.0.10"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b15811caf2415fb889178633e7724bad2509101cde276048e013b9def5e51fa0"
|
||||
checksum = "22049a19f4a68748a168c0fc439f9516686aa045927ff767eca0a85101fb6e73"
|
||||
|
||||
[[package]]
|
||||
name = "unicode-width"
|
||||
|
|
|
|||
|
|
@ -27,7 +27,7 @@ macros::impl_both!(
|
|||
bd(p0: R, p1: I)
|
||||
=> [LI],
|
||||
n()
|
||||
=> [NOP, ECALL],
|
||||
=> [UN, NOP, ECALL],
|
||||
);
|
||||
|
||||
impl Assembler {
|
||||
|
|
@ -36,6 +36,11 @@ impl Assembler {
|
|||
pub fn i_brc(&mut self, p0: u8, p1: u8, p2: u8) {
|
||||
self.i_param_bbb(hbbytecode::opcode::BRC, p0, p1, p2)
|
||||
}
|
||||
|
||||
/// Append 12 zeroes (UN) at the end
|
||||
pub fn finalise(&mut self) {
|
||||
self.buf.extend([0; 12]);
|
||||
}
|
||||
}
|
||||
|
||||
pub trait Imm {
|
||||
|
|
|
|||
|
|
@ -48,6 +48,7 @@ fn main() -> Result<(), Box<dyn Error>> {
|
|||
.eprint(("engine_internal", Source::from(&code)))
|
||||
.unwrap();
|
||||
} else {
|
||||
assembler.finalise();
|
||||
std::io::stdout().lock().write_all(&assembler.buf).unwrap();
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -18,62 +18,63 @@ macro_rules! constmod {
|
|||
constmod!(pub opcode(u8) {
|
||||
//! Opcode constant module
|
||||
|
||||
NOP = 0, "N; Do nothing";
|
||||
UN = 0, "N; Raises a trap";
|
||||
NOP = 1, "N; Do nothing";
|
||||
|
||||
ADD = 1, "BBB; #0 ← #1 + #2";
|
||||
SUB = 2, "BBB; #0 ← #1 - #2";
|
||||
MUL = 3, "BBB; #0 ← #1 × #2";
|
||||
AND = 4, "BBB; #0 ← #1 & #2";
|
||||
OR = 5, "BBB; #0 ← #1 | #2";
|
||||
XOR = 6, "BBB; #0 ← #1 ^ #2";
|
||||
SL = 7, "BBB; #0 ← #1 « #2";
|
||||
SR = 8, "BBB; #0 ← #1 » #2";
|
||||
SRS = 9, "BBB; #0 ← #1 » #2 (signed)";
|
||||
CMP = 10, "BBB; #0 ← #1 <=> #2";
|
||||
CMPU = 11, "BBB; #0 ← #1 <=> #2 (unsigned)";
|
||||
DIR = 12, "BBBB; #0 ← #2 / #3, #1 ← #2 % #3";
|
||||
NEG = 13, "BB; #0 ← -#1";
|
||||
NOT = 14, "BB; #0 ← !#1";
|
||||
ADD = 2, "BBB; #0 ← #1 + #2";
|
||||
SUB = 3, "BBB; #0 ← #1 - #2";
|
||||
MUL = 4, "BBB; #0 ← #1 × #2";
|
||||
AND = 5, "BBB; #0 ← #1 & #2";
|
||||
OR = 6, "BBB; #0 ← #1 | #2";
|
||||
XOR = 7, "BBB; #0 ← #1 ^ #2";
|
||||
SL = 8, "BBB; #0 ← #1 « #2";
|
||||
SR = 9, "BBB; #0 ← #1 » #2";
|
||||
SRS = 10, "BBB; #0 ← #1 » #2 (signed)";
|
||||
CMP = 11, "BBB; #0 ← #1 <=> #2";
|
||||
CMPU = 12, "BBB; #0 ← #1 <=> #2 (unsigned)";
|
||||
DIR = 13, "BBBB; #0 ← #2 / #3, #1 ← #2 % #3";
|
||||
NEG = 14, "BB; #0 ← -#1";
|
||||
NOT = 15, "BB; #0 ← !#1";
|
||||
|
||||
ADDI = 15, "BBD; #0 ← #1 + imm #2";
|
||||
MULI = 16, "BBD; #0 ← #1 × imm #2";
|
||||
ANDI = 17, "BBD; #0 ← #1 & imm #2";
|
||||
ORI = 18, "BBD; #0 ← #1 | imm #2";
|
||||
XORI = 19, "BBD; #0 ← #1 ^ imm #2";
|
||||
SLI = 20, "BBD; #0 ← #1 « imm #2";
|
||||
SRI = 21, "BBD; #0 ← #1 » imm #2";
|
||||
SRSI = 22, "BBD; #0 ← #1 » imm #2 (signed)";
|
||||
CMPI = 23, "BBD; #0 ← #1 <=> imm #2";
|
||||
CMPUI = 24, "BBD; #0 ← #1 <=> imm #2 (unsigned)";
|
||||
ADDI = 16, "BBD; #0 ← #1 + imm #2";
|
||||
MULI = 17, "BBD; #0 ← #1 × imm #2";
|
||||
ANDI = 18, "BBD; #0 ← #1 & imm #2";
|
||||
ORI = 19, "BBD; #0 ← #1 | imm #2";
|
||||
XORI = 20, "BBD; #0 ← #1 ^ imm #2";
|
||||
SLI = 21, "BBD; #0 ← #1 « imm #2";
|
||||
SRI = 22, "BBD; #0 ← #1 » imm #2";
|
||||
SRSI = 23, "BBD; #0 ← #1 » imm #2 (signed)";
|
||||
CMPI = 24, "BBD; #0 ← #1 <=> imm #2";
|
||||
CMPUI = 25, "BBD; #0 ← #1 <=> imm #2 (unsigned)";
|
||||
|
||||
CP = 25, "BB; Copy #0 ← #1";
|
||||
SWA = 26, "BB; Swap #0 and #1";
|
||||
LI = 27, "BD; #0 ← imm #1";
|
||||
LD = 28, "BBDB; #0 ← [#1 + imm #3], imm #4 bytes, overflowing";
|
||||
ST = 29, "BBDB; [#1 + imm #3] ← #0, imm #4 bytes, overflowing";
|
||||
BMC = 30, "BBD; [#0] ← [#1], imm #2 bytes";
|
||||
BRC = 31, "BBB; #0 ← #1, imm #2 registers";
|
||||
CP = 26, "BB; Copy #0 ← #1";
|
||||
SWA = 27, "BB; Swap #0 and #1";
|
||||
LI = 28, "BD; #0 ← imm #1";
|
||||
LD = 29, "BBDB; #0 ← [#1 + imm #3], imm #4 bytes, overflowing";
|
||||
ST = 30, "BBDB; [#1 + imm #3] ← #0, imm #4 bytes, overflowing";
|
||||
BMC = 31, "BBD; [#0] ← [#1], imm #2 bytes";
|
||||
BRC = 32, "BBB; #0 ← #1, imm #2 registers";
|
||||
|
||||
JAL = 32, "BD; Copy PC to #0 and unconditional jump [#1 + imm #2]";
|
||||
JEQ = 33, "BBD; if #0 = #1 → jump imm #2";
|
||||
JNE = 34, "BBD; if #0 ≠ #1 → jump imm #2";
|
||||
JLT = 35, "BBD; if #0 < #1 → jump imm #2";
|
||||
JGT = 36, "BBD; if #0 > #1 → jump imm #2";
|
||||
JLTU = 37, "BBD; if #0 < #1 → jump imm #2 (unsigned)";
|
||||
JGTU = 38, "BBD; if #0 > #1 → jump imm #2 (unsigned)";
|
||||
ECALL = 39, "N; Issue system call";
|
||||
JAL = 33, "BD; Copy PC to #0 and unconditional jump [#1 + imm #2]";
|
||||
JEQ = 34, "BBD; if #0 = #1 → jump imm #2";
|
||||
JNE = 35, "BBD; if #0 ≠ #1 → jump imm #2";
|
||||
JLT = 36, "BBD; if #0 < #1 → jump imm #2";
|
||||
JGT = 37, "BBD; if #0 > #1 → jump imm #2";
|
||||
JLTU = 38, "BBD; if #0 < #1 → jump imm #2 (unsigned)";
|
||||
JGTU = 39, "BBD; if #0 > #1 → jump imm #2 (unsigned)";
|
||||
ECALL = 40, "N; Issue system call";
|
||||
|
||||
ADDF = 40, "BBB; #0 ← #1 +. #2";
|
||||
SUBF = 41, "BBB; #0 ← #1 -. #2";
|
||||
MULF = 42, "BBB; #0 ← #1 +. #2";
|
||||
DIRF = 43, "BBBB; #0 ← #2 / #3, #1 ← #2 % #3";
|
||||
FMAF = 44, "BBBB; #0 ← (#1 * #2) + #3";
|
||||
NEGF = 45, "BB; #0 ← -#1";
|
||||
ITF = 46, "BB; #0 ← #1 as float";
|
||||
FTI = 47, "BB; #0 ← #1 as int";
|
||||
ADDF = 41, "BBB; #0 ← #1 +. #2";
|
||||
SUBF = 42, "BBB; #0 ← #1 -. #2";
|
||||
MULF = 43, "BBB; #0 ← #1 +. #2";
|
||||
DIRF = 44, "BBBB; #0 ← #2 / #3, #1 ← #2 % #3";
|
||||
FMAF = 45, "BBBB; #0 ← (#1 * #2) + #3";
|
||||
NEGF = 46, "BB; #0 ← -#1";
|
||||
ITF = 47, "BB; #0 ← #1 as float";
|
||||
FTI = 48, "BB; #0 ← #1 as int";
|
||||
|
||||
ADDFI = 48, "BBD; #0 ← #1 +. imm #2";
|
||||
MULFI = 49, "BBD; #0 ← #1 *. imm #2";
|
||||
ADDFI = 49, "BBD; #0 ← #1 +. imm #2";
|
||||
MULFI = 50, "BBD; #0 ← #1 *. imm #2";
|
||||
});
|
||||
|
||||
#[repr(packed)]
|
||||
|
|
|
|||
|
|
@ -9,6 +9,8 @@ pub enum ErrorKind {
|
|||
Unimplemented,
|
||||
/// Attempted to copy over register boundary
|
||||
RegisterArrayOverflow,
|
||||
/// Program is not validly terminated
|
||||
InvalidEnd,
|
||||
}
|
||||
|
||||
/// Error
|
||||
|
|
@ -25,6 +27,22 @@ pub struct Error {
|
|||
pub fn validate(mut program: &[u8]) -> Result<(), Error> {
|
||||
use hbbytecode::opcode::*;
|
||||
|
||||
if program.len() < 12 {
|
||||
return Err(Error {
|
||||
kind: ErrorKind::InvalidEnd,
|
||||
index: 0,
|
||||
});
|
||||
}
|
||||
|
||||
for (index, item) in program.iter().enumerate().skip(program.len() - 12) {
|
||||
if *item != 0 {
|
||||
return Err(Error {
|
||||
kind: ErrorKind::InvalidEnd,
|
||||
index,
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
let start = program;
|
||||
loop {
|
||||
// Match on instruction types and perform necessary checks
|
||||
|
|
@ -46,7 +64,7 @@ pub fn validate(mut program: &[u8]) -> Result<(), Error> {
|
|||
index: (program.as_ptr() as usize) - (start.as_ptr() as usize),
|
||||
})
|
||||
}
|
||||
[NOP | ECALL, rest @ ..]
|
||||
[UN | NOP | ECALL, rest @ ..]
|
||||
| [DIR | DIRF, _, _, _, _, rest @ ..]
|
||||
| [ADD..=CMPU | BRC | ADDF..=MULF, _, _, _, rest @ ..]
|
||||
| [NEG..=NOT | CP..=SWA | NEGF..=FTI, _, _, rest @ ..]
|
||||
|
|
|
|||
|
|
@ -6,10 +6,6 @@
|
|||
// - Validation has to assure there is 256 registers (r0 - r255)
|
||||
// - Instructions have to be valid as specified (values and sizes)
|
||||
// - Mapped pages should be at least 4 KiB
|
||||
// - Yes, I am aware of the UB when jumping in-mid of instruction where
|
||||
// the read byte corresponds to an instruction whose lenght exceets the
|
||||
// program size. If you are (rightfully) worried about the UB, for now just
|
||||
// append your program with 11 zeroes.
|
||||
|
||||
use self::mem::HandlePageFault;
|
||||
|
||||
|
|
@ -97,6 +93,9 @@ pub struct Vm<'a, PfHandler, const TIMER_QUOTIENT: usize> {
|
|||
/// Program
|
||||
program: &'a [u8],
|
||||
|
||||
/// Cached program length (without unreachable end)
|
||||
program_len: usize,
|
||||
|
||||
/// Program timer
|
||||
timer: usize,
|
||||
}
|
||||
|
|
@ -114,6 +113,7 @@ impl<'a, PfHandler: HandlePageFault, const TIMER_QUOTIENT: usize>
|
|||
memory: Default::default(),
|
||||
pfhandler: traph,
|
||||
pc: 0,
|
||||
program_len: program.len() - 12,
|
||||
program,
|
||||
timer: 0,
|
||||
}
|
||||
|
|
@ -131,13 +131,18 @@ impl<'a, PfHandler: HandlePageFault, const TIMER_QUOTIENT: usize>
|
|||
pub fn run(&mut self) -> Result<VmRunOk, VmRunError> {
|
||||
use hbbytecode::opcode::*;
|
||||
loop {
|
||||
// Fetch instruction
|
||||
let Some(&opcode) = self.program.get(self.pc)
|
||||
else { return Ok(VmRunOk::End) };
|
||||
// Check instruction boundary
|
||||
if self.pc >= self.program_len {
|
||||
return Ok(VmRunOk::End);
|
||||
}
|
||||
|
||||
// Big match
|
||||
unsafe {
|
||||
match opcode {
|
||||
match *self.program.get_unchecked(self.pc) {
|
||||
UN => {
|
||||
param!(self, ());
|
||||
return Err(VmRunError::Unreachable);
|
||||
}
|
||||
NOP => param!(self, ()),
|
||||
ADD => binary_op!(self, as_u64, u64::wrapping_add),
|
||||
SUB => binary_op!(self, as_u64, u64::wrapping_sub),
|
||||
|
|
@ -256,7 +261,7 @@ impl<'a, PfHandler: HandlePageFault, const TIMER_QUOTIENT: usize>
|
|||
core::ptr::copy(
|
||||
self.registers.get_unchecked(usize::from(src)),
|
||||
self.registers.get_unchecked_mut(usize::from(dst)),
|
||||
usize::from(count * 8),
|
||||
usize::from(count),
|
||||
);
|
||||
}
|
||||
JAL => {
|
||||
|
|
@ -352,6 +357,9 @@ pub enum VmRunError {
|
|||
|
||||
/// Unhandled store access exception
|
||||
StoreAccessEx(u64),
|
||||
|
||||
/// Reached unreachable code
|
||||
Unreachable,
|
||||
}
|
||||
|
||||
/// Virtual machine halt ok
|
||||
|
|
|
|||
105
spec.md
105
spec.md
|
|
@ -4,6 +4,7 @@
|
|||
- All numbers are encoded little-endian
|
||||
- There is 256 registers, they are represented by a byte
|
||||
- Immediate values are 64 bit
|
||||
- Program is by spec required to be terminated with 12 zero bytes
|
||||
|
||||
### Instruction encoding
|
||||
- Instruction parameters are packed (no alignment)
|
||||
|
|
@ -35,8 +36,9 @@
|
|||
- N type
|
||||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:----------:|
|
||||
| 0 | NOP | Do nothing |
|
||||
|:------:|:----:|:-----------------------------:|
|
||||
| 0 | UN | Trigger unreachable code trap |
|
||||
| 1 | NOP | Do nothing |
|
||||
|
||||
## Integer binary ops.
|
||||
- BBB type
|
||||
|
|
@ -44,21 +46,21 @@
|
|||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:-----------------------:|
|
||||
| 1 | ADD | Wrapping addition |
|
||||
| 2 | SUB | Wrapping subtraction |
|
||||
| 3 | MUL | Wrapping multiplication |
|
||||
| 4 | AND | Bitand |
|
||||
| 5 | OR | Bitor |
|
||||
| 6 | XOR | Bitxor |
|
||||
| 7 | SL | Unsigned left bitshift |
|
||||
| 8 | SR | Unsigned right bitshift |
|
||||
| 9 | SRS | Signed right bitshift |
|
||||
| 2 | ADD | Wrapping addition |
|
||||
| 3 | SUB | Wrapping subtraction |
|
||||
| 4 | MUL | Wrapping multiplication |
|
||||
| 5 | AND | Bitand |
|
||||
| 6 | OR | Bitor |
|
||||
| 7 | XOR | Bitxor |
|
||||
| 8 | SL | Unsigned left bitshift |
|
||||
| 9 | SR | Unsigned right bitshift |
|
||||
| 10 | SRS | Signed right bitshift |
|
||||
|
||||
### Comparsion
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:-------------------:|
|
||||
| 10 | CMP | Signed comparsion |
|
||||
| 11 | CMPU | Unsigned comparsion |
|
||||
| 11 | CMP | Signed comparsion |
|
||||
| 12 | CMPU | Unsigned comparsion |
|
||||
|
||||
#### Comparsion table
|
||||
| #1 *op* #2 | Result |
|
||||
|
|
@ -75,7 +77,7 @@
|
|||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:-------------------------------:|
|
||||
| 12 | DIR | Divide and remainder combinated |
|
||||
| 13 | DIR | Divide and remainder combinated |
|
||||
|
||||
### Negations
|
||||
- Type BB
|
||||
|
|
@ -83,8 +85,8 @@
|
|||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:----------------:|
|
||||
| 13 | NEG | Bit negation |
|
||||
| 14 | NOT | Logical negation |
|
||||
| 14 | NEG | Bit negation |
|
||||
| 15 | NOT | Logical negation |
|
||||
|
||||
## Integer immediate binary ops.
|
||||
- Type BBD
|
||||
|
|
@ -92,22 +94,22 @@
|
|||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:-----------------------:|
|
||||
| 15 | ADDI | Wrapping addition |
|
||||
| 16 | MULI | Wrapping subtraction |
|
||||
| 17 | ANDI | Bitand |
|
||||
| 18 | ORI | Bitor |
|
||||
| 19 | XORI | Bitxor |
|
||||
| 20 | SLI | Unsigned left bitshift |
|
||||
| 21 | SRI | Unsigned right bitshift |
|
||||
| 22 | SRSI | Signed right bitshift |
|
||||
| 16 | ADDI | Wrapping addition |
|
||||
| 17 | MULI | Wrapping subtraction |
|
||||
| 18 | ANDI | Bitand |
|
||||
| 19 | ORI | Bitor |
|
||||
| 20 | XORI | Bitxor |
|
||||
| 21 | SLI | Unsigned left bitshift |
|
||||
| 22 | SRI | Unsigned right bitshift |
|
||||
| 23 | SRSI | Signed right bitshift |
|
||||
|
||||
### Comparsion
|
||||
- Comparsion is the same as when RRR type
|
||||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:-----:|:-------------------:|
|
||||
| 23 | CMPI | Signed comparsion |
|
||||
| 24 | CMPUI | Unsigned comparsion |
|
||||
| 24 | CMPI | Signed comparsion |
|
||||
| 25 | CMPUI | Unsigned comparsion |
|
||||
|
||||
## Register value set / copy
|
||||
|
||||
|
|
@ -117,7 +119,7 @@
|
|||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:------:|
|
||||
| 25 | CP | Copy |
|
||||
| 26 | CP | Copy |
|
||||
|
||||
### Swap
|
||||
- Type BB
|
||||
|
|
@ -125,7 +127,7 @@
|
|||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:------:|
|
||||
| 26 | SWA | Swap |
|
||||
| 27 | SWA | Swap |
|
||||
|
||||
### Load immediate
|
||||
- Type BD
|
||||
|
|
@ -133,7 +135,7 @@
|
|||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:--------------:|
|
||||
| 27 | LI | Load immediate |
|
||||
| 28 | LI | Load immediate |
|
||||
|
||||
## Memory operations
|
||||
- Type BBDH
|
||||
|
|
@ -142,8 +144,8 @@
|
|||
### Load / Store
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:---------------------------------------:|
|
||||
| 28 | LD | `#0 ← [#1 + imm #3], copy imm #4 bytes` |
|
||||
| 29 | ST | `[#1 + imm #3] ← #0, copy imm #4 bytes` |
|
||||
| 29 | LD | `#0 ← [#1 + imm #3], copy imm #4 bytes` |
|
||||
| 30 | ST | `[#1 + imm #3] ← #0, copy imm #4 bytes` |
|
||||
|
||||
## Block copy
|
||||
- Block copy source and target can overlap
|
||||
|
|
@ -153,7 +155,7 @@
|
|||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:--------------------------------:|
|
||||
| 30 | BMC | `[#1] ← [#0], copy imm #2 bytes` |
|
||||
| 31 | BMC | `[#1] ← [#0], copy imm #2 bytes` |
|
||||
|
||||
### Register copy
|
||||
- Type BBB
|
||||
|
|
@ -161,7 +163,7 @@
|
|||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:--------------------------------:|
|
||||
| 31 | BRC | `#1 ← #0, copy imm #2 registers` |
|
||||
| 32 | BRC | `#1 ← #0, copy imm #2 registers` |
|
||||
|
||||
## Control flow
|
||||
|
||||
|
|
@ -170,7 +172,7 @@
|
|||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:-------------------------------------------------:|
|
||||
| 32 | JAL | Save current PC to `#0` and jump at `#1 + imm #2` |
|
||||
| 33 | JAL | Save current PC to `#0` and jump at `#1 + imm #2` |
|
||||
|
||||
### Conditional jumps
|
||||
- Type BBD
|
||||
|
|
@ -178,19 +180,19 @@
|
|||
|
||||
| Opcode | Name | Comparsion |
|
||||
|:------:|:----:|:------------:|
|
||||
| 33 | JEQ | = |
|
||||
| 34 | JNE | ≠ |
|
||||
| 35 | JLT | < (signed) |
|
||||
| 36 | JGT | > (signed) |
|
||||
| 37 | JLTU | < (unsigned) |
|
||||
| 38 | JGTU | > (unsigned) |
|
||||
| 34 | JEQ | = |
|
||||
| 35 | JNE | ≠ |
|
||||
| 36 | JLT | < (signed) |
|
||||
| 37 | JGT | > (signed) |
|
||||
| 38 | JLTU | < (unsigned) |
|
||||
| 39 | JGTU | > (unsigned) |
|
||||
|
||||
### Environment call
|
||||
- Type N
|
||||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:-----:|:-------------------------------------:|
|
||||
| 39 | ECALL | Cause an trap to the host environment |
|
||||
| 40 | ECALL | Cause an trap to the host environment |
|
||||
|
||||
## Floating point operations
|
||||
- Type BBB
|
||||
|
|
@ -198,29 +200,29 @@
|
|||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:--------------:|
|
||||
| 40 | ADDF | Addition |
|
||||
| 41 | SUBF | Subtraction |
|
||||
| 42 | MULF | Multiplication |
|
||||
| 41 | ADDF | Addition |
|
||||
| 42 | SUBF | Subtraction |
|
||||
| 43 | MULF | Multiplication |
|
||||
|
||||
### Division-remainder
|
||||
- Type BBBB
|
||||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:-------------------------:|
|
||||
| 43 | DIRF | Same as for integer `DIR` |
|
||||
| 44 | DIRF | Same as for integer `DIR` |
|
||||
|
||||
### Fused Multiply-Add
|
||||
- Type BBBB
|
||||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:---------------------:|
|
||||
| 44 | FMAF | `#0 ← (#1 * #2) + #3` |
|
||||
| 45 | FMAF | `#0 ← (#1 * #2) + #3` |
|
||||
|
||||
### Negation
|
||||
- Type BB
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:----------:|
|
||||
| 45 | NEGF | `#0 ← -#1` |
|
||||
| 46 | NEGF | `#0 ← -#1` |
|
||||
|
||||
### Conversion
|
||||
- Type BB
|
||||
|
|
@ -229,8 +231,8 @@
|
|||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:------------:|
|
||||
| 46 | ITF | Int to Float |
|
||||
| 47 | FTI | Float to Int |
|
||||
| 47 | ITF | Int to Float |
|
||||
| 48 | FTI | Float to Int |
|
||||
|
||||
## Floating point immediate operations
|
||||
- Type BBD
|
||||
|
|
@ -238,8 +240,8 @@
|
|||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:-----:|:--------------:|
|
||||
| 48 | ADDFI | Addition |
|
||||
| 49 | MULFI | Multiplication |
|
||||
| 49 | ADDFI | Addition |
|
||||
| 50 | MULFI | Multiplication |
|
||||
|
||||
# Registers
|
||||
- There is 255 registers + one zero register (with index 0)
|
||||
|
|
@ -277,6 +279,7 @@ Program should at least implement these traps:
|
|||
- Invalid instruction exception
|
||||
- Load address exception
|
||||
- Store address exception
|
||||
- Unreachable instruction
|
||||
|
||||
and executing environment should be able to get information about them,
|
||||
like the opcode of invalid instruction or attempted address to load/store.
|
||||
|
|
|
|||
Loading…
Reference in a new issue