From 1ade055e099062c09920dbb550211be7d302050a Mon Sep 17 00:00:00 2001
From: cannoli-fruit <co.dy.0.i.s.0.he.re@gmail.com>
Date: Fri, 24 Jul 2026 03:12:34 -0400
Subject: [PATCH] Implemented the rest of the unsigned integer operations

---
 .gitignore    |  2 +-
 src/interp.c  | 13 ++++++++++++-
 tests/fvm.inc | 15 +++++++++++++--
 tests/mod.asm | 10 ++++++++++
 tests/mul.asm | 10 ++++++++++
 5 files changed, 46 insertions(+), 4 deletions(-)
 create mode 100644 tests/mod.asm
 create mode 100644 tests/mul.asm

diff --git a/.gitignore b/.gitignore
index 9ef9604..f6b006f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,2 @@
 build
-
+flagvm
diff --git a/src/interp.c b/src/interp.c
index f9b340b..6b58f1a 100644
--- a/src/interp.c
+++ b/src/interp.c
@@ -29,7 +29,6 @@ uint64_t registers[256];
 bool isMMIO(uint64_t addr) {
   if (addr == UART_TX) return true;
   if (addr == UART_RX) return true;
-
   return false;
 }
 
@@ -168,12 +167,24 @@ int main(int argc, char **argv) {
         registers[dst] += registers[src];
         break;
       }
+      case 0x70: { // MulR64
+        unsigned char dst = inputs[0];
+        unsigned char src = inputs[1];
+        registers[dst] *= registers[src];
+        break;
+      }
       case 0x72: { // DivR64
         unsigned char dst = inputs[0];
         unsigned char src = inputs[1];
         registers[dst] /= registers[src];
         break;
       }
+      case 0x74: { // ModR64
+        unsigned char dst = inputs[0];
+        unsigned char src = inputs[1];
+        registers[dst] %= registers[src];
+        break;
+      }
       case 0xC0: { // Jmp
         unsigned char addr = inputs[0];
         xPc = registers[addr];
diff --git a/tests/fvm.inc b/tests/fvm.inc
index 0b494bb..9ac7d46 100644
--- a/tests/fvm.inc
+++ b/tests/fvm.inc
@@ -13,8 +13,7 @@ define r9 9
 define r10 10
 define r11 11
 define r12 12
-define r13 13
-define r14 14
+define r13 13 define r14 14
 define r15 15
 define r16 16
 define r17 17
@@ -236,12 +235,24 @@ macro AddR64 dst, src
   db src
 end macro
 
+macro MulR64 dst, src
+  db 0x70
+  db dst
+  db src
+end macro
+
 macro DivR64 dst, src
   db 0x72
   db dst
   db src
 end macro
 
+macro ModR64 dst, src
+  db 0x74
+  db dst
+  db src
+end macro
+
 macro RSetF reg
   db 0x42
   db reg
diff --git a/tests/mod.asm b/tests/mod.asm
new file mode 100644
index 0000000..34de549
--- /dev/null
+++ b/tests/mod.asm
@@ -0,0 +1,10 @@
+include "fvm.inc"
+
+org 0x4000000000000000
+  MovI64 r95, UART_TX
+  MovI64 r2, 16
+  MovI64 r3, 3
+  ModR64 r2, r3
+  MovI64 r4, 48 ; ascii for 0
+  AddR64 r2, r4
+  St8 r2, r95
diff --git a/tests/mul.asm b/tests/mul.asm
new file mode 100644
index 0000000..e118cbf
--- /dev/null
+++ b/tests/mul.asm
@@ -0,0 +1,10 @@
+include "fvm.inc"
+
+org 0x4000000000000000
+  MovI64 r95, UART_TX
+  MovI64 r2, 2
+  MovI64 r3, 4
+  MulR64 r2, r3
+  MovI64 r4, 48 ; ascii for 0
+  AddR64 r2, r4
+  St8 r2, r95