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/*
* 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 <nw/io.h>
#include <nw/interp.h>
#include <nw/linear.h>
#include <nw/stack.h>
#include <nw/log.h>
#include <nw/ops.h>
#include <nw/routines.h>
static enum nw_state push(struct nw_interp *const i)
{
struct nw_i_sm_load *const l = &i->sm.load;
const enum nw_state n = nwp_stack_push(i, &l->io);
if (n)
return n;
i->push_type = NW_TYPE_I32;
nwp_interp_resume(i);
return NW_AGAIN;
}
static enum nw_state load(struct nw_interp *const i)
{
struct nw_i_sm_load *const l = &i->sm.load;
const enum nw_state n = nwp_linear_load(i, &l->io, l->addr + l->imm.offset);
if (n)
return n;
else
{
struct nw_sm_io io = {0};
l->value.i32 = nwp_leuint32(&l->value.v32);
io.buf = &l->value.i32;
io.n = sizeof l->value.i32;
l->io = io;
i->next = push;
}
i->next = push;
return NW_AGAIN;
}
static enum nw_state pop_addr(struct nw_interp *const i)
{
struct nw_i_sm_load *const l = &i->sm.load;
const enum nw_state n = nwp_stack_pop(i, &l->io);
if (n)
return n;
else
{
struct nw_sm_io io = {0};
io.buf = &l->value.i32;
io.n = sizeof l->value.i32;
l->io = io;
i->next = load;
}
return NW_AGAIN;
}
static void prepare(struct nw_interp *const i)
{
struct nw_i_sm_imm_out imm = i->sm.imm.out;
struct nw_i_sm_load *const pl = &i->sm.load, l = {0};
l.imm = imm;
l.io.buf = &pl->addr;
l.io.n = sizeof pl->addr;
*pl = l;
i->next = pop_addr;
}
void nwp_op_i32_load(struct nw_interp *const i)
{
nwp_mem_imm(i, prepare);
}
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