From a08856a464a93da3dfee77956dfc7dc65c037e0b Mon Sep 17 00:00:00 2001 From: mlokr Date: Sun, 12 May 2024 20:14:46 +0200 Subject: [PATCH] fising spec --- spec.md | 84 ++++++++++++++++++++++++++++----------------------------- 1 file changed, 42 insertions(+), 42 deletions(-) diff --git a/spec.md b/spec.md index 86e14cd..df41169 100644 --- a/spec.md +++ b/spec.md @@ -50,7 +50,7 @@ of offset in the code. Not from the beginning of current or following instructio ## Rounding modes | Rounding mode | Value | -fn():------| +|:-------------------------|:------| | To nearest, ties to even | 0b00 | | Towards 0 (truncate) | 0b01 | | Towards +∞ (up) | 0b10 | @@ -89,7 +89,7 @@ Program counter stays on the currently executed instruction - Type `N` | Opcode | Mnemonic | Action | -fn():--------------------------------------------| +|:-------|:---------|:--------------------------------------------| | 0x00 | UN | Throw unreachable code exception | | 0x01 | TX | Terminate execution (eg. on end of program) | | 0x02 | NOP | Do nothing | @@ -100,7 +100,7 @@ fn():--------------------------------------------| ## Addition (`+`) | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x03 | ADD8 | Xi8 | | 0x04 | ADD16 | Xi16 | | 0x05 | ADD32 | Xi32 | @@ -108,7 +108,7 @@ fn():-----| ## Subtraction (`-`) | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x07 | SUB8 | Xi8 | | 0x08 | SUB16 | Xi16 | | 0x09 | SUB32 | Xi32 | @@ -116,7 +116,7 @@ fn():-----| ## Multiplication (`*`) | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x0B | MUL8 | Xi8 | | 0x0C | MUL16 | Xi16 | | 0x0D | MUL32 | Xi32 | @@ -124,14 +124,14 @@ fn():-----| ## Bitwise ops (type: Xi64) | Opcode | Mnemonic | Operation | -fn():--------------------| +|:-------|:---------|:--------------------| | 0x0F | AND | Conjunction (&) | | 0x10 | OR | Disjunction (\|) | | 0x11 | XOR | Non-equivalence (^) | ## Unsigned left bitshift (`<<`) | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x12 | SLU8 | Ui8 | | 0x13 | SLU16 | Ui16 | | 0x14 | SLU32 | Ui32 | @@ -139,7 +139,7 @@ fn():-----| ## Unsigned right bitshift (`>>`) | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x16 | SRU8 | Ui8 | | 0x17 | SRU16 | Ui16 | | 0x18 | SRU32 | Ui32 | @@ -147,7 +147,7 @@ fn():-----| ## Signed right bitshift (`>>`) | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x1A | SRS8 | Si8 | | 0x1B | SRS16 | Si16 | | 0x1C | SRS32 | Si32 | @@ -158,13 +158,13 @@ fn():-----| - Operation: `#0 ← #1 <=> #2` | Ordering | Number | -fn():-------| +|:---------|:-------| | < | -1 | | = | 0 | | > | 1 | | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x1E | CMPU | Ui64 | | 0x1F | CMPS | Si64 | @@ -179,7 +179,7 @@ fn():-----| - `#1 ← #2` | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x20 | DIRU8 | Ui8 | | 0x21 | DIRU16 | Ui16 | | 0x22 | DIRU32 | Ui32 | @@ -194,7 +194,7 @@ fn():-----| - Operation: `#0 ← #1` | Opcode | Mnemonic | Operation | -fn():-------------------------| +|:-------|:---------|:-------------------------| | 0x28 | NEG | Bitwise complement (`~`) | | 0x29 | NOT | Logical negation (`!`) | @@ -202,7 +202,7 @@ fn():-------------------------| - Operation: `#0 ← Si64(#1)` | Opcode | Mnemonic | Source type | -fn():------------| +|:-------|:---------|:------------| | 0x2A | SXT8 | Si8 | | 0x2B | SXT16 | Si16 | | 0x2C | SXT32 | Si32 | @@ -213,7 +213,7 @@ fn():------------| ## Addition (`+`) | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x2D | ADDI8 | Xi8 | | 0x2E | ADDI16 | Xi16 | | 0x2F | ADDI32 | Xi32 | @@ -221,7 +221,7 @@ fn():-----| ## Multiplication (`*`) | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x31 | MULI8 | Xi8 | | 0x32 | MULI16 | Xi16 | | 0x33 | MULI32 | Xi32 | @@ -229,7 +229,7 @@ fn():-----| ## Bitwise ops (type: Xi64) | Opcode | Mnemonic | Operation | -fn():--------------------| +|:-------|:---------|:--------------------| | 0x35 | ANDI | Conjunction (&) | | 0x36 | ORI | Disjunction (\|) | | 0x37 | XORI | Non-equivalence (^) | @@ -240,7 +240,7 @@ fn():--------------------| ## Unsigned left bitshift (`<<`) | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x38 | SLUI8 | Ui8 | | 0x39 | SLUI16 | Ui16 | | 0x3A | SLUI32 | Ui32 | @@ -248,7 +248,7 @@ fn():-----| ## Unsigned right bitshift (`>>`) | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x3C | SRUI8 | Ui8 | | 0x3D | SRUI16 | Ui16 | | 0x3E | SRUI32 | Ui32 | @@ -256,7 +256,7 @@ fn():-----| ## Signed right bitshift (`>>`) | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x40 | SRSI8 | Si8 | | 0x41 | SRSI16 | Si16 | | 0x42 | SRSI32 | Si32 | @@ -268,7 +268,7 @@ fn():-----| - Comparsion table same for register-register one | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x44 | CMPUI | Ui64 | | 0x45 | CMPSI | Si64 | @@ -276,7 +276,7 @@ fn():-----| - Type: `RR` | Opcode | Mnemonic | Operation | -fn():---------------------------------| +|:-------|:---------|:---------------------------------| | 0x46 | CP | Copy register value (`#0 ← #1`) | | 0x47 | SWA | Swap register values (`#0 ⇆ #1`) | @@ -286,7 +286,7 @@ fn():---------------------------------| - Operation: `#0 ← $1` | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x48 | LI8 | Xi8 | | 0x49 | LI16 | Xi16 | | 0x4A | Li32 | Xi32 | @@ -298,7 +298,7 @@ fn():-----| - Operation: `#0 ← pc + #1 + $2` | Opcode | Mnemonic | -fn():---------| +|:-------|:---------| | 0x4C | LRA | # Memory access operations @@ -313,7 +313,7 @@ fn():---------| - Computes address from base register and absolute offset | Opcode | Mnemonic | Operation | -fn():-------------------| +|:-------|:---------|:-------------------| | 0x4D | LD | `#0 ← $3[#1 + $2]` | | 0x4E | ST | `$3[#1 + $2] ← #0` | @@ -322,7 +322,7 @@ fn():-------------------| - Computes address from register and offset from program counter | Opcode | Mnemonic | Operation | -fn():------------------------| +|:-------|:---------|:------------------------| | 0x4F | LDR | `#0 ← $3[pc + #1 + $2]` | | 0x50 | STR | `$3[pc + #1 + $2] ← #0` | @@ -331,7 +331,7 @@ fn():------------------------| - Copies block of `$3` bytes from memory location on address on `#0` to `#1` | Opcode | Mnemonic | Operation | -fn():------------------| +|:-------|:---------|:------------------| | 0x51 | BMC | `$3[#1] ← $3[x0]` | # Block register copy @@ -340,14 +340,14 @@ fn():------------------| - Copying over the 256 registers causes an exception | Opcode | Mnemonic | Operation | -fn():--------------| +|:-------|:---------|:--------------| | 0x52 | BRC | `$3#1 ← $3#0` | # Relative jump - Type: `O` | Opcode | Mnemonic | Operation | -fn():---------------| +|:-------|:---------|:---------------| | 0x53 | JMP | `pc ← pc + $0` | # Linking jump @@ -357,7 +357,7 @@ fn():---------------| - Jump to specified address | Opcode | Mnemonic | Instruction type | Address | -fn():-------------------------| +|:-------|:---------|:------------------|:-------------------------| | 0x54 | JAL | RRO (size = 6 B) | Relative, `pc + #1 + $2` | | 0x55 | JALA | RRA (size = 10 B) | Absolute, `#1 + $2` | @@ -367,7 +367,7 @@ fn():-------------------------| - Operation: `if #0 #1 { pc ← pc + $2 }` | Opcode | Mnemonic | Condition | Type | -fn():-----| +|:-------|:---------|:-------------------|:-----| | 0x56 | JEQ | Equals (`=`) | Xi64 | | 0x57 | JNE | Not-equals (`≠`) | Xi64 | | 0x58 | JLTU | Less-than (`<`) | Ui64 | @@ -380,7 +380,7 @@ fn():-----| - Type: `N` | Opcode | Mnemonic | Trap type | -fn():-----------------| +|:-------|:---------|:-----------------| | 0x5C | ECA | Environment call | | 0x5D | EBP | Breakpoint | @@ -389,7 +389,7 @@ fn():-----------------| - Operation: `#0 ← #1 #2` | Opcode | Mnemonic | Operation | Type | -fn():-----| +|:-------|:---------|:---------------------|:-----| | 0x5E | FADD32 | Addition (`+`) | Fl32 | | 0x5F | FADD64 | Addition (`+`) | Fl64 | | 0x60 | FSUB32 | Subtraction (`-`) | Fl32 | @@ -404,7 +404,7 @@ fn():-----| - Operation: `#0 ← (#1 * #2) + #3` | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x66 | FMA32 | Fl32 | | 0x67 | FMA64 | Fl64 | @@ -415,7 +415,7 @@ fn():-----| - NaN is less-than/greater-than depends on variant | Opcode | Mnemonic | Type | NaN is | -fn():-------| +|:-------|:---------|:-----|:-------| | 0x6A | FCMPLT32 | Fl32 | < | | 0x6B | FCMPLT64 | Fl64 | < | | 0x6C | FCMPGT32 | Fl32 | > | @@ -427,7 +427,7 @@ fn():-------| - Operation: `#0 ← Fl(#1)` | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x6E | ITF32 | Fl32 | | 0x6F | ITF64 | Fl64 | @@ -437,7 +437,7 @@ fn():-----| - Immediate `$2` specifies rounding mode | Opcode | Mnemonic | Type | -fn():-----| +|:-------|:---------|:-----| | 0x70 | FTI32 | Fl32 | | 0x71 | FTI64 | Fl64 | @@ -446,7 +446,7 @@ fn():-----| - Operation: `#0 ← Fl64(#1)` | Opcode | Mnemonic | -fn():---------| +|:-------|:---------| | 0x72 | FC32T64 | # Fl64 to Fl32 @@ -455,13 +455,13 @@ fn():---------| - Immediate `$2` specified rounding mode | Opcode | Mnemonic | -fn():---------| +|:-------|:---------| | 0x73 | FC64T32 | # 16-bit relative address instruction variants | Opcode | Mnemonic | Type | Variant of | -fn():-----------| +|:-------|:---------|:-----|:-----------| | 0x74 | LRA16 | RRP | LRA | | 0x75 | LDR16 | RRPH | LDR | | 0x76 | STR16 | RRPH | STR | @@ -472,7 +472,7 @@ fn():-----------| - One byte is 8 bits | C Type | Description | Byte sizes | -fn():-----------| +|:------------|:-------------------------|:-----------| | char | Character / byte | 1 | | short | Short integer | 2 | | int | Integer | 4 | @@ -491,7 +491,7 @@ fn():-----------| - Registers r32 – r255 are callee saved | Register | Description | Saver | -fn():-------| +|:-----------|:--------------------|:-------| | r0 | Hard-wired zero | N/A | | r1 - r2 | Return values | Caller | | r2 - r11 | Function parameters | Caller |