First commit

1 files changed, 47 insertions, 0 deletions

diff --git a/src/dbg/mem_read.c b/src/dbg/mem_read.c
new file mode 100644
index 0000000..d1f419c
--- /dev/null
+++ b/src/dbg/mem_read.c
@@ -0,0 +1,47 @@
+/*
+ * nanowasm, a tiny WebAssembly/Wasm interpreter
+ * Copyright (C) 2023-2025  Xavier Del Campo Romero
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#include <nanowasm/nw.h>
+#include <nanowasm/dbg.h>
+#include <nw/linear.h>
+#include <nw/types.h>
+
+static enum nw_state load_mem(struct nw_interp *const i)
+{
+    struct nw_dbg *const d = i->args;
+    struct nw_dbg_sm_mem_load *const pm = &d->sm.mem_load;
+    const enum nw_state n = nwp_linear_load(i, &pm->io, pm->offset);
+
+    if (n)
+        return n;
+
+    i->next = pm->inext;
+    return NW_AGAIN;
+}
+
+void nw_dbg_mem_load(struct nw_dbg *const d, const enum nw_type t,
+    const unsigned long offset)
+{
+    const struct nw_dbg_sm_mem_load ml = {0};
+    struct nw_dbg_sm_mem_load *const pm = &d->sm.mem_load;
+    struct nw_sm_io *const io = &pm->io;
+    struct nw_interp *const i = &d->cfg.inst->interp;
+    struct nw_dbg_value *const v = &d->v;
+    size_t sz;
+
+    nwp_type_sz(t, &sz);
+    *pm = ml;
+    pm->inext = i->next;
+    pm->offset = offset;
+    v->type = t;
+    io->buf = &v->value;
+    io->n = sz;
+    i->args = d;
+    i->next = load_mem;
+}