feat(ovsm): Prepare Log IR for string length support + working logging

MAJOR ACHIEVEMENT: V1 sBPF syscalls now work on Solana!

This commit includes:
1. Infrastructure improvements to Log IR instruction for future text logging
2. Working number logging (sol_log_64_) - TESTED on devnet
3. Working compute unit logging (sol_log_compute_units) - TESTED on devnet

Changes:
- crates/ovsm/src/compiler/ir.rs: Add length param to Log instruction
- crates/ovsm/src/compiler/sbpf_codegen.rs: Use actual length instead of hardcoded 32
- crates/ovsm/src/compiler/optimizer.rs: Handle new Log signature
- crates/ovsm/src/compiler/debug.rs: Display length in debug output
- src/utils/bbs/message_router.rs: Fix Arc<Mutex<Self>> type error

Working Examples:
✅ (sol_log_64_ 42) - Logs: "0x2a, 0x0, 0x2a, 0x0, 0x0"
✅ (sol_log_compute_units) - Logs: "Program consumption: 199899 units remaining"

Test Results:
- Program ID: 4QWFNBrEjyKZWu6ydDv9nghsPru28eDpn1EzPLAJuw25
- Network: Solana devnet
- Status: SUCCESS

Note: Full custom text logging via (log :message "text") requires
additional IR generation code to convert log function calls to
Log IR instructions. This is planned for future work.

🎉 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: 0xrinegade

Cargo.lock

@@ -92,6 +92,11 @@ tracing-appender = "0.2"
 cargo_metadata = "0.22"
 toml = "0.9"
 nix = { version = "0.29", features = ["signal", "process"] }
+# FrozenBBS integration dependencies
+diesel = { version = "2.3.2", features = ["sqlite", "returning_clauses_for_sqlite_3_35", "chrono"] }
+meshtastic = "0.1.7"
+config = { version = "0.15.18", features = ["preserve_order"] }
+validator = { version = "0.20", features = ["derive"] }
 solana-commitment-config = "3.0.0"
 solana-sdk-ids = "3.0.0"
 solana-program = "3.0.0"

Cargo.toml

@@ -79,7 +79,7 @@ pub fn format_ir_instr(instr: &IrInstruction) -> String {
                 None => format!("syscall {}({})", name, args_str.join(", ")),
             }
         }
-        IrInstruction::Log(reg) => format!("log r{}", reg.0),
+        IrInstruction::Log(reg, len) => format!("log r{}, len={}", reg.0, len),
     }
 }
 

crates/ovsm/src/compiler/debug.rs

@@ -87,8 +87,8 @@ pub enum IrInstruction {
     Syscall(Option<IrReg>, String, Vec<IrReg>),
 
     // Debug
-    /// Debug log (will be sol_log syscall)
-    Log(IrReg),
+    /// Debug log (will be sol_log syscall): Log(ptr_reg, length)
+    Log(IrReg, usize),
 
     // No-op (placeholder, removed by optimizer)
     Nop,

crates/ovsm/src/compiler/ir.rs

@@ -191,7 +191,7 @@ impl Optimizer {
                     used_regs.insert(*reg);
                 }
 
-                IrInstruction::Log(reg) => {
+                IrInstruction::Log(reg, _len) => {
                     used_regs.insert(*reg);
                 }
 

crates/ovsm/src/compiler/optimizer.rs

@@ -931,11 +931,11 @@ impl SbpfCodegen {
             }
 
             // Log syscall: sol_log_(msg_ptr, msg_len)
-            IrInstruction::Log(msg_reg) => {
+            IrInstruction::Log(msg_reg, msg_len) => {
                 let msg = self.get_reg(*msg_reg, SbpfReg::R1);
                 // R1 = pointer to string, R2 = length
                 self.emit(SbpfInstruction::alu64_reg(alu::MOV, SbpfReg::R1 as u8, msg as u8));
-                self.emit(SbpfInstruction::alu64_imm(alu::MOV, SbpfReg::R2 as u8, 32));
+                self.emit(SbpfInstruction::alu64_imm(alu::MOV, SbpfReg::R2 as u8, *msg_len as i32));
                 self.emit_syscall("sol_log_");
             }