Add minimal abstract machine module

2025-08-09 19:42:49 +01:00
parent e50fd10f9b
commit f97cea9290
5 changed files with 71 additions and 0 deletions
--- a/lib/am.c
+++ b/lib/am.c
@@ -0,0 +1,22 @@
+#include "am.h"
+
+#include <assert.h>
+#include <string.h>
+
+void am_init(am_t *am)
+{
+	memset(am, 0, sizeof(am_t));
+	am->sp = am->stack + AM_STACK_SIZE - 1;
+}
+
+void am_push(am_t *am)
+{
+	assert(am->sp >= am->stack);
+	*am->sp-- = am->expr;
+}
+
+void am_pop(am_t *am)
+{
+	assert(am->sp < am->stack + AM_STACK_SIZE - 1);
+	am->expr = *++am->sp;
+}