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egecanakincioglu merged 4 commits into from
Jun 8, 2026
Merged

v1: unblock self-host runtime and fix boolean NOT codegen #132

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7fef0fa
fix(runtime): implement native File.read lowering for self-host compiler
egecanakincioglu Jun 8, 2026
b2d09e8
fix(runtime): implement native File.write lowering for self-host comp…
egecanakincioglu Jun 8, 2026
ab56310
fix(runtime): route Process.exec to native system helper
egecanakincioglu Jun 8, 2026
c21ea5d
fix(codegen): emit boolean NOT as XOR with 1, not bitwise NOT
egecanakincioglu Jun 8, 2026
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158 changes: 158 additions & 0 deletions arimo/compiler/backend/IRLower.arm
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Original file line number Diff line number Diff line change
Expand Up @@ -1451,6 +1451,30 @@ public class IRLower {
this.emit(IRInstr.load(IRValue.reg(a0Reg, IRType.PTR), IRValue.reg(avReg, IRType.PTR), IRType.PTR));
return IRValue.reg(a0Reg, IRType.PTR);
}
// Process.exec(cmd) → __arimo_system (fork+execve+waitpid)
if (class_ == "Process" && method == "exec") {
IRValue cmdVal = this.lowerExpr(args.get(0) as Expr);
String retR = this.newReg();
List<IRValue> sArgs = List(); sArgs.append(cmdVal);
this.emit(IRInstr.call(IRValue.reg(retR, IRType.I64), "__arimo_system", sArgs));
return IRValue.reg(retR, IRType.I64);
}
// File.write(path, content) → File__write wrapper (open + write + close)
if (class_ == "File" && method == "write") {
IRValue pathVal = this.lowerExpr(args.get(0) as Expr);
IRValue contentVal = this.lowerExpr(args.get(1) as Expr);
List<IRValue> fwArgs = List(); fwArgs.append(pathVal); fwArgs.append(contentVal);
this.emit(IRInstr.call(IRValue.reg(this.newReg(), IRType.VOID), "File__write", fwArgs));
return IRValue.none();
}
// File.read(path) → File__read wrapper (open + read + close)
if (class_ == "File" && method == "read") {
IRValue pathVal = this.lowerExpr(args.get(0) as Expr);
String retR = this.newReg();
List<IRValue> frArgs = List(); frArgs.append(pathVal);
this.emit(IRInstr.call(IRValue.reg(retR, IRType.PTR), "File__read", frArgs));
return IRValue.reg(retR, IRType.PTR);
}
// Generic static call fallback
String fnName = "${class_}__${method}";
List<IRValue> callArgsFn = List();
Expand Down Expand Up @@ -3060,6 +3084,8 @@ public class IRLower {
this.generateSystem();
this.generateBuildArgs();
this.generateFileExists();
this.generateFileRead();
this.generateFileWrite();
this.generateStartFn();
}

Expand Down Expand Up @@ -3268,4 +3294,136 @@ public class IRLower {
this.emit(IRInstr.label(endL));
this.emit(IRInstr.ret(retV));
}

// generateFileWrite: native File__write(path, content) → Void helper.
// Opens path write-truncate, writes content via strlen+write syscall, closes.
private generateFileWrite() {
this.beginFn("File__write", IRType.VOID);
this.addParamToLast("path", IRType.PTR);
this.addParamToLast("content", IRType.PTR);
this.resetFnContext(); this.emit(IRInstr.label("entry"));
IRValue pathV = IRValue.reg("path", IRType.PTR);
IRValue contentV = IRValue.reg("content", IRType.PTR);

// fd = __arimo_fopen(path, "w")
String modeR = this.newReg(); IRValue modeV = IRValue.reg(modeR, IRType.PTR);
this.emit(IRInstr.mov(modeV, IRValue.global(this.internStr("w"))));
List<IRValue> foArgs = List(); foArgs.append(pathV); foArgs.append(modeV);
String fdR = this.newReg(); IRValue fdV = IRValue.reg(fdR, IRType.I64);
this.emit(IRInstr.call(fdV, "__arimo_fopen", foArgs));

// if fd == 0 → return
this.emit(IRInstr.cmp(fdV, IRValue.ofInt(0, IRType.I64)));
this.emit(IRInstr.branch(IROpcode.JE, "fw_done"));

// len = strlen(content)
String lenR = this.newReg(); IRValue lenV = IRValue.reg(lenR, IRType.I64);
List<IRValue> slArgs = List(); slArgs.append(contentV);
this.emit(IRInstr.call(lenV, "__arimo_strlen", slArgs));

// write(fd, content, len) → syscall 1
List<IRValue> wrArgs = List(); wrArgs.append(fdV);
wrArgs.append(contentV); wrArgs.append(lenV);
String wrR = this.newReg();
this.emit(IRInstr.syscall(IRValue.reg(wrR, IRType.I64), 1, wrArgs));

// close(fd) → syscall 3
List<IRValue> clArgs = List(); clArgs.append(fdV);
String clR = this.newReg();
this.emit(IRInstr.syscall(IRValue.reg(clR, IRType.I64), 3, clArgs));

this.emit(IRInstr.label("fw_done"));
this.emit(IRInstr.retVoid());
}

// generateFileRead: native File__read(path) → PTR helper.
// Opens path read-only, reads entire file into mmap-allocated buffer,
// null-terminates, returns pointer. Returns empty string on any error.
private generateFileRead() {
this.beginFn("File__read", IRType.PTR);
this.addParamToLast("path", IRType.PTR);
this.resetFnContext(); this.emit(IRInstr.label("entry"));
IRValue pathV = IRValue.reg("path", IRType.PTR);

// fd = __arimo_fopen(path, "r")
String modeR = this.newReg(); IRValue modeV = IRValue.reg(modeR, IRType.PTR);
this.emit(IRInstr.mov(modeV, IRValue.global(this.internStr("r"))));
List<IRValue> foArgs = List(); foArgs.append(pathV); foArgs.append(modeV);
String fdR = this.newReg(); IRValue fdV = IRValue.reg(fdR, IRType.I64);
this.emit(IRInstr.call(fdV, "__arimo_fopen", foArgs));

// if fd == 0 → return ""
String emptyR = this.newReg(); IRValue emptyV = IRValue.reg(emptyR, IRType.PTR);
this.emit(IRInstr.mov(emptyV, IRValue.global(this.internStr(""))));
this.emit(IRInstr.cmp(fdV, IRValue.ofInt(0, IRType.I64)));
this.emit(IRInstr.branch(IROpcode.JE, "fr_done_empty"));

// size = lseek(fd, 0, SEEK_END=2) → syscall 8
List<IRValue> lseArgs = List(); lseArgs.append(fdV);
lseArgs.append(IRValue.ofInt(0, IRType.I64));
lseArgs.append(IRValue.ofInt(2, IRType.I64));
String szR = this.newReg(); IRValue szV = IRValue.reg(szR, IRType.I64);
this.emit(IRInstr.syscall(szV, 8, lseArgs));

// if size < 0 → close and return ""
this.emit(IRInstr.cmp(szV, IRValue.ofInt(0, IRType.I64)));
this.emit(IRInstr.branch(IROpcode.JL, "fr_bad"));

// lseek(fd, 0, SEEK_SET=0) → rewind
List<IRValue> lse2Args = List(); lse2Args.append(fdV);
lse2Args.append(IRValue.ofInt(0, IRType.I64));
lse2Args.append(IRValue.ofInt(0, IRType.I64));
String igR = this.newReg();
this.emit(IRInstr.syscall(IRValue.reg(igR, IRType.I64), 8, lse2Args));

// allocSize = size + 1 (null terminator), minimum 1
String asR = this.newReg(); IRValue asV = IRValue.reg(asR, IRType.I64);
this.emit(IRInstr.binop(IROpcode.ADD, asV, szV, IRValue.ofInt(1, IRType.I64)));

// buf = mmap(0, allocSize, PROT_RW=3, MAP_PRIVATE|ANON=34, -1, 0) → syscall 9
List<IRValue> mmArgs = List();
mmArgs.append(IRValue.ofInt(0, IRType.I64));
mmArgs.append(asV);
mmArgs.append(IRValue.ofInt(3, IRType.I64));
mmArgs.append(IRValue.ofInt(34, IRType.I64));
mmArgs.append(IRValue.ofInt(-1, IRType.I64));
mmArgs.append(IRValue.ofInt(0, IRType.I64));
String bufR = this.newReg(); IRValue bufV = IRValue.reg(bufR, IRType.PTR);
this.emit(IRInstr.syscall(bufV, 9, mmArgs));

// if buf == 0 (mmap failed) → close and return ""
this.emit(IRInstr.cmp(bufV, IRValue.ofInt(0, IRType.I64)));
this.emit(IRInstr.branch(IROpcode.JE, "fr_bad"));

// n = read(fd, buf, size) → syscall 0
List<IRValue> rdArgs = List(); rdArgs.append(fdV);
rdArgs.append(bufV); rdArgs.append(szV);
String nR = this.newReg(); IRValue nV = IRValue.reg(nR, IRType.I64);
this.emit(IRInstr.syscall(nV, 0, rdArgs));

// close(fd) → syscall 3
List<IRValue> clArgs = List(); clArgs.append(fdV);
String clR = this.newReg();
this.emit(IRInstr.syscall(IRValue.reg(clR, IRType.I64), 3, clArgs));

// if n < 0 → return ""
this.emit(IRInstr.cmp(nV, IRValue.ofInt(0, IRType.I64)));
this.emit(IRInstr.branch(IROpcode.JL, "fr_done_empty"));

// buf[n] = 0 → null-terminate
String offR = this.newReg(); IRValue offV = IRValue.reg(offR, IRType.PTR);
this.emit(IRInstr.binop(IROpcode.ADD, offV, bufV, nV));
this.emit(IRInstr.store(IRValue.ofInt(0, IRType.I8), offV, IRType.I8));

// return buf
this.emit(IRInstr.ret(bufV));

// Error/empty paths
this.emit(IRInstr.label("fr_bad"));
List<IRValue> cl2Args = List(); cl2Args.append(fdV);
String cl2R = this.newReg();
this.emit(IRInstr.syscall(IRValue.reg(cl2R, IRType.I64), 3, cl2Args));
this.emit(IRInstr.label("fr_done_empty"));
this.emit(IRInstr.ret(emptyV));
}
}
56 changes: 51 additions & 5 deletions arimo/compiler/backend/IRToX64.arm
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Original file line number Diff line number Diff line change
Expand Up @@ -167,6 +167,9 @@ public class IRToX64 {
this.safeRa.assertWritten(val.name);
Integer off = this.safeRa.slotOffsetByName(val.name);
if (off == 0) { this.safeRa.errorCode = 3; }
if (this.curName.contains("tokenize")) {
IO.println("SAFEDBG LOAD fn=${this.curName} name=${val.name} off=${off}");
}
this.enc.movRMem(scratchReg, X64Reg.RBP, off);
return scratchReg;
}
Expand All @@ -184,6 +187,9 @@ public class IRToX64 {
this.safeRa.assertKnown(name);
Integer off = this.safeRa.slotOffsetByName(name);
if (off == 0) { this.safeRa.errorCode = 3; }
if (this.curName.contains("tokenize")) {
IO.println("SAFEDBG STORE fn=${this.curName} name=${name} off=${off}");
}
this.enc.movMemR(X64Reg.RBP, off, srcReg);
this.safeRa.markValueWritten(name);
}
Expand Down Expand Up @@ -285,6 +291,15 @@ public class IRToX64 {
if (frameSize > 1024) {
IO.println("SAFEDBG BIGFRAME fn=${fn.name} slots=${this.safeRa.totalSlots()} frame=${frameSize}");
}
// DEBUG: slot dump for tokenize
if (fn.name.contains("tokenize")) {
IO.println("SAFEDBG SLOTS fn=${fn.name} slots=${this.safeRa.totalSlots()} frame=${frameSize}");
Integer sdi = 0;
while (sdi < this.safeRa.totalSlots()) {
IO.println("SAFEDBG SLOT idx=${sdi} off=${this.safeRa.slotOffset(sdi)}");
sdi = sdi + 1;
}
}

this.enc.defineLabel(fn.name);

Expand Down Expand Up @@ -508,7 +523,8 @@ public class IRToX64 {
Integer sr = this.loadVal(src);
Integer dr = this.dstReg(instr.dst.name);
if (dr != sr) { this.enc.movRR(dr, sr); }
this.enc.notR(dr);
this.enc.movRI(X64Reg.R11, 1);
this.enc.xorRR(dr, X64Reg.R11);
this.flushDst(instr.dst.name, dr);
return;
}
Expand Down Expand Up @@ -694,6 +710,34 @@ public class IRToX64 {

private emitInstrSafe(instr: IRInstr) {
Integer op = instr.op;
if ((this.curName.contains("tokenize") || this.curName.contains("main") || this.curName.contains("T__main")) && (op == IROpcode.CMP || op == IROpcode.JE || op == IROpcode.XOR || op == IROpcode.ADD ||
op == IROpcode.JNE || op == IROpcode.JMP || op == IROpcode.MOV)) {
String opName = "?";
if (op == IROpcode.CMP) { opName = "CMP"; }
if (op == IROpcode.JE) { opName = "JE"; }
if (op == IROpcode.JNE) { opName = "JNE"; }
if (op == IROpcode.JMP) { opName = "JMP"; }
if (op == IROpcode.MOV) { opName = "MOV"; }
if (op == IROpcode.XOR) { opName = "XOR"; }
if (op == IROpcode.ADD) { opName = "ADD"; }
String dName = "";
if (!instr.dst.isNone() && instr.dst.kind == IRValueKind.REG) { dName = instr.dst.name; }
String aName = "";
if (instr.operands.length() > 0) {
IRValue a = instr.operands.get(0) as IRValue;
if (a.kind == IRValueKind.REG) { aName = a.name; }
else if (a.kind == IRValueKind.IMM_INT) { aName = "IMM(${a.immInt})"; }
}
String bName = "";
if (instr.operands.length() > 1) {
IRValue b = instr.operands.get(1) as IRValue;
if (b.kind == IRValueKind.REG) { bName = b.name; }
else if (b.kind == IRValueKind.IMM_INT) { bName = "IMM(${b.immInt})"; }
}
String lbl = "";
if (instr.label.length() > 0) { lbl = " lbl=${instr.label}"; }
IO.println("SAFEDBG IR fn=${this.curName} op=${opName} dst=${dName} a=${aName} b=${bName}${lbl}");
}

// --- Control flow (no register usage) ---

Expand Down Expand Up @@ -812,13 +856,15 @@ public class IRToX64 {
return;
}

// --- NOT ---
// --- NOT (boolean: XOR with 1, not bitwise NOT) ---

if (op == IROpcode.NOT) {
Integer sr = this.safeRa.allocScratch();
List<Integer> regs = this.safeRa.allocScratch2();
IRValue src = instr.operands.get(0) as IRValue;
sr = this.safeLoadVal(src, sr);
this.enc.notR(sr);
Integer sr = this.safeLoadVal(src, regs.get(0) as Integer);
Integer one = regs.get(1) as Integer;
this.enc.movRI(one, 1);
this.enc.xorRR(sr, one);
this.safeStoreDst(instr.dst.name, sr);
return;
}
Expand Down
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