line tables and backtraces: port agent/line-tables onto main, op 56 on the x86-64 jit, docs, measurements, tests; default genome reservation 0x68000

1 files changed, 2 insertions, 0 deletions

diff --git a/src/js/tinyvm.ts b/src/js/tinyvm.ts
index f779487..f52d4af 100644
--- a/src/js/tinyvm.ts
+++ b/src/js/tinyvm.ts
@@ -466,6 +466,8 @@ export class TinyVM {
                 }
                 return -1n;
             }
+            case 56: // the return stack pointer: the word after the top return address
+                return BigInt(this.rr);
             case 42: // poll: input is waiting
                 return this.inputPos < this.inputBuffer.length ? 1n : 0n;
             case 41: { // shortest float text into a word buffer