forked from AbleOS/holey-bytes
Sus stuff
This commit is contained in:
parent
2f8612c6d2
commit
441356b6f2
|
|
@ -1,46 +1,46 @@
|
|||
// OPCODE, MNEMONIC, TYPE, DOC;
|
||||
|
||||
0, UN, N, "Cause an unreachable code trap" ;
|
||||
1, TX, N, "Termiante execution" ;
|
||||
2, NOP, N, "Do nothing" ;
|
||||
|
||||
3, ADD, RRR, "Addition" ;
|
||||
4, SUB, RRR, "Subtraction" ;
|
||||
5, MUL, RRR, "Multiplication" ;
|
||||
6, AND, RRR, "Bitand" ;
|
||||
7, OR, RRR, "Bitor" ;
|
||||
8, XOR, RRR, "Bitxor" ;
|
||||
9, SL, RRR, "Unsigned left bitshift" ;
|
||||
0, UN, N, "Cause an unreachable code trap" ;
|
||||
1, TX, N, "Termiante execution" ;
|
||||
2, NOP, N, "Do nothing" ;
|
||||
|
||||
3, ADD, RRR, "Addition" ;
|
||||
4, SUB, RRR, "Subtraction" ;
|
||||
5, MUL, RRR, "Multiplication" ;
|
||||
6, AND, RRR, "Bitand" ;
|
||||
7, OR, RRR, "Bitor" ;
|
||||
8, XOR, RRR, "Bitxor" ;
|
||||
9, SL, RRR, "Unsigned left bitshift" ;
|
||||
10, SR, RRR, "Unsigned right bitshift" ;
|
||||
11, SRS, RRR, "Signed right bitshift" ;
|
||||
12, CMP, RRR, "Signed comparsion" ;
|
||||
13, CMPU, RRR, "Unsigned comparsion" ;
|
||||
14, DIR, RRRR, "Merged divide-remainder" ;
|
||||
15, NEG, RR, "Bit negation" ;
|
||||
15, NOT, RR, "Logical negation" ;
|
||||
16, ADDI, RRD, "Addition with immediate" ;
|
||||
17, MULI, RRD, "Multiplication with immediate" ;
|
||||
18, ANDI, RRD, "Bitand with immediate" ;
|
||||
19, ORI, RRD, "Bitor with immediate" ;
|
||||
20, XORI, RRD, "Bitxor with immediate" ;
|
||||
21, SLI, RRW, "Unsigned left bitshift with immedidate";
|
||||
22, SRI, RRW, "Unsigned right bitshift with immediate";
|
||||
23, SRSI, RRW, "Signed right bitshift with immediate" ;
|
||||
24, CMPI, RRD, "Signed compare with immediate" ;
|
||||
25, CMPUI, RRD, "Unsigned compare with immediate" ;
|
||||
17, ADDI, RRD, "Addition with immediate" ;
|
||||
18, MULI, RRD, "Multiplication with immediate" ;
|
||||
19, ANDI, RRD, "Bitand with immediate" ;
|
||||
20, ORI, RRD, "Bitor with immediate" ;
|
||||
21, XORI, RRD, "Bitxor with immediate" ;
|
||||
22, SLI, RRW, "Unsigned left bitshift with immedidate";
|
||||
23, SRI, RRW, "Unsigned right bitshift with immediate";
|
||||
24, SRSI, RRW, "Signed right bitshift with immediate" ;
|
||||
25, CMPI, RRD, "Signed compare with immediate" ;
|
||||
26, CMPUI, RRD, "Unsigned compare with immediate" ;
|
||||
|
||||
26, CP, RR, "Copy register" ;
|
||||
27, SWA, RR, "Swap registers" ;
|
||||
28, LI, RD, "Load immediate" ;
|
||||
29, LRA, RRO, "Load relative address" ;
|
||||
30, LD, RRAH, "Load from absolute address" ;
|
||||
31, ST, RRAH, "Store to absolute address" ;
|
||||
32, LDR, RROH, "Load from relative address" ;
|
||||
33, STR, RROH, "Store to relative address" ;
|
||||
34, BMC, RRH, "Copy block of memory" ;
|
||||
35, BRC, RRB, "Copy register block" ;
|
||||
27, CP, RR, "Copy register" ;
|
||||
28, SWA, RR, "Swap registers" ;
|
||||
29, LI, RD, "Load immediate" ;
|
||||
30, LRA, RRO, "Load relative address" ;
|
||||
31, LD, RRAH, "Load from absolute address" ;
|
||||
32, ST, RRAH, "Store to absolute address" ;
|
||||
33, LDR, RROH, "Load from relative address" ;
|
||||
34, STR, RROH, "Store to relative address" ;
|
||||
35, BMC, RRH, "Copy block of memory" ;
|
||||
36, BRC, RRB, "Copy register block" ;
|
||||
|
||||
36, JMP, A, "Absolute jump" ;
|
||||
37, JMPR, O, "Relative jump" ;
|
||||
37, JMP, O, "Relative jump" ;
|
||||
38, JAL, RRA, "Linking absolute jump" ;
|
||||
39, JALR, RRO, "Linking relative jump" ;
|
||||
40, JEQ, RRP, "Branch on equal" ;
|
||||
|
|
@ -49,21 +49,22 @@
|
|||
43, JGT, RRP, "Branch on greater-than (signed)" ;
|
||||
44, JLTU, RRP, "Branch on lesser-than (unsigned)" ;
|
||||
45, JGTU, RRP, "Branch on greater-than (unsigned)" ;
|
||||
46, ECALL, N, "Issue ecall trap" ;
|
||||
46, ECA, N, "Environment call trap" ;
|
||||
47, EBP, N, "Environment breakpoint" ;
|
||||
|
||||
47, ADDF, RRR, "Floating addition" ;
|
||||
48, SUBF, RRR, "Floating subtraction" ;
|
||||
49, MULF, RRR, "Floating multiply" ;
|
||||
50, DIRF, RRRR, "Merged floating divide-remainder" ;
|
||||
51, FMAF, RRRR, "Fused floating multiply-add" ;
|
||||
52, NEGF, RR, "Floating sign negation" ;
|
||||
53, ITF, RR, "Int to float" ;
|
||||
54, FTI, RR, "Float to int" ;
|
||||
48, ADDF, RRR, "Floating addition" ;
|
||||
49, SUBF, RRR, "Floating subtraction" ;
|
||||
50, MULF, RRR, "Floating multiply" ;
|
||||
51, DIRF, RRRR, "Merged floating divide-remainder" ;
|
||||
52, FMAF, RRRR, "Fused floating multiply-add" ;
|
||||
53, NEGF, RR, "Floating sign negation" ;
|
||||
54, ITF, RR, "Int to float" ;
|
||||
55, FTI, RR, "Float to int" ;
|
||||
|
||||
55, ADDFI, RRD, "Floating addition with immediate" ;
|
||||
56, MULFI, RRD, "Floating multiplication with immediate";
|
||||
56, ADDFI, RRD, "Floating addition with immediate" ;
|
||||
57, MULFI, RRD, "Floating multiplication with immediate";
|
||||
|
||||
57, LRA16 , RRP, "Load relative immediate (16 bit)" ;
|
||||
58, LDR16 , RRPH, "Load from relative address (16 bit)" ;
|
||||
59, STR16 , RRPH, "Store to relative address (16 bit)" ;
|
||||
60, JMPR16, P, "Relative jump (16 bit)" ;
|
||||
58, LRA16 , RRP, "Load relative immediate (16 bit)" ;
|
||||
59, LDR16 , RRPH, "Load from relative address (16 bit)" ;
|
||||
60, STR16 , RRPH, "Store to relative address (16 bit)" ;
|
||||
61, JMPR16, P, "Relative jump (16 bit)" ;
|
||||
|
|
|
|||
|
|
@ -105,4 +105,7 @@ pub enum VmRunOk {
|
|||
|
||||
/// Environment call
|
||||
Ecall,
|
||||
|
||||
/// Breakpoint
|
||||
Breakpoint,
|
||||
}
|
||||
|
|
|
|||
|
|
@ -99,10 +99,15 @@ where
|
|||
+ 1,
|
||||
);
|
||||
}
|
||||
NEG => {
|
||||
// Bit negation
|
||||
let OpsRR(tg, a0) = self.decode();
|
||||
self.write_reg(tg, !self.read_reg(a0).cast::<u64>())
|
||||
}
|
||||
NOT => {
|
||||
// Logical negation
|
||||
let OpsRR(tg, a0) = self.decode();
|
||||
self.write_reg(tg, !self.read_reg(a0).cast::<u64>());
|
||||
self.write_reg(tg, u64::from(self.read_reg(a0).cast::<u64>() == 0));
|
||||
}
|
||||
DIR => {
|
||||
// Fused Division-Remainder
|
||||
|
|
@ -231,8 +236,7 @@ where
|
|||
usize::from(count),
|
||||
);
|
||||
}
|
||||
JMP => self.pc = Address::new(self.decode::<OpA>()),
|
||||
JMPR => self.pc = self.pc.wrapping_add(self.decode::<OpO>()),
|
||||
JMP => self.pc = self.pc.wrapping_add(self.decode::<OpO>()),
|
||||
JAL => {
|
||||
// Jump and link. Save PC after this instruction to
|
||||
// specified register and jump to reg + offset.
|
||||
|
|
@ -256,7 +260,7 @@ where
|
|||
JGT => self.cond_jmp::<u64>(Ordering::Greater),
|
||||
JLTU => self.cond_jmp::<i64>(Ordering::Less),
|
||||
JGTU => self.cond_jmp::<i64>(Ordering::Greater),
|
||||
ECALL => {
|
||||
ECA => {
|
||||
self.decode::<()>();
|
||||
|
||||
// So we don't get timer interrupt after ECALL
|
||||
|
|
@ -265,6 +269,10 @@ where
|
|||
}
|
||||
return Ok(VmRunOk::Ecall);
|
||||
}
|
||||
EBP => {
|
||||
self.decode::<()>();
|
||||
return Ok(VmRunOk::Breakpoint);
|
||||
}
|
||||
ADDF => self.binary_op::<f64>(ops::Add::add),
|
||||
SUBF => self.binary_op::<f64>(ops::Sub::sub),
|
||||
MULF => self.binary_op::<f64>(ops::Mul::mul),
|
||||
|
|
|
|||
26
spec.md
26
spec.md
|
|
@ -195,16 +195,15 @@
|
|||
- Type D
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:-------------------------------------------:|
|
||||
| 37 | JMP | Unconditional, non-linking jump |
|
||||
| 38 | JMPR | Jump at address relative to program counter |
|
||||
| 37 | JMPR | Jump at address relative to program counter |
|
||||
|
||||
### Unconditional linking jump
|
||||
- Type BBD
|
||||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:-------------------------------------------------------:|
|
||||
| 39 | JAL | Save PC past JAL to `#0` and jump at `#1 + imm #2` |
|
||||
| 40 | JALR | Save PC past JAL to `#0` and jump at `#1 + imm #2 + PC` |
|
||||
| 38 | JAL | Save PC past JAL to `#0` and jump at `#1 + imm #2` |
|
||||
| 39 | JALR | Save PC past JAL to `#0` and jump at `#1 + imm #2 + PC` |
|
||||
|
||||
### Conditional jumps
|
||||
- Type BBH
|
||||
|
|
@ -212,19 +211,20 @@
|
|||
|
||||
| Opcode | Name | Comparsion |
|
||||
|:------:|:----:|:------------:|
|
||||
| 41 | JEQ | = |
|
||||
| 42 | JNE | ≠ |
|
||||
| 43 | JLT | < (signed) |
|
||||
| 44 | JGT | > (signed) |
|
||||
| 45 | JLTU | < (unsigned) |
|
||||
| 46 | JGTU | > (unsigned) |
|
||||
| 40 | JEQ | = |
|
||||
| 41 | JNE | ≠ |
|
||||
| 42 | JLT | < (signed) |
|
||||
| 43 | JGT | > (signed) |
|
||||
| 44 | JLTU | < (unsigned) |
|
||||
| 45 | JGTU | > (unsigned) |
|
||||
|
||||
### Environment call
|
||||
- Type N
|
||||
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:-----:|:-------------------------------------:|
|
||||
| 47 | ECALL | Cause an trap to the host environment |
|
||||
| Opcode | Name | Action |
|
||||
|:------:|:----:|:-------------------------------------:|
|
||||
| 46 | ECA | Cause an trap to the host environment |
|
||||
| 47 | EBP | Cause breakproint trap to environment |
|
||||
|
||||
## Floating point operations
|
||||
- Type BBB
|
||||
|
|
|
|||
Loading…
Reference in a new issue