Move bytecode offsets from lj_vm.* to generated header.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/buildvm.c b/src/buildvm.c
index 34f3df96..375e8b2b 100644
--- a/src/buildvm.c
+++ b/src/buildvm.c
@@ -251,6 +251,19 @@ static const char *lower(char *buf, const char *s)
   return buf;
 }
 
+/* Emit C source code for bytecode-related definitions. */
+static void emit_bcdef(BuildCtx *ctx)
+{
+  int i;
+  fprintf(ctx->fp, "/* This is a generated file. DO NOT EDIT! */\n\n");
+  fprintf(ctx->fp, "LJ_DATADEF const uint16_t lj_bc_ofs[BC__MAX+1] = {\n  ");
+  for (i = 0; i < ctx->npc; i++) {
+    fprintf(ctx->fp, "%4d, ", ctx->sym_ofs[i]);
+    if ((i & 7) == 7) fprintf(ctx->fp, "\n  ");
+  }
+  fprintf(ctx->fp, "0\n};\n\n");
+}
+
 /* Emit VM definitions as Lua code for debug modules. */
 static void emit_vmdef(BuildCtx *ctx)
 {
@@ -418,6 +431,9 @@ int main(int argc, char **argv)
   case BUILD_raw:
     emit_raw(ctx);
     break;
+  case BUILD_bcdef:
+    emit_bcdef(ctx);
+    break;
   case BUILD_vmdef:
     emit_vmdef(ctx);
     /* fallthrough */