82 lines
2.0 KiB
C
82 lines
2.0 KiB
C
/*
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* nanowasm, a tiny WebAssembly/Wasm interpreter
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* Copyright (C) 2023-2024 Xavier Del Campo Romero
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#include <nanowasm/nw.h>
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#include <nw/interp.h>
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#include <nw/log.h>
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#include <nw/search.h>
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#include <nw/sections.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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int nw_start(const struct nw_inst_cfg *const icfg, struct nw_inst *const i)
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{
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int ret = -1;
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const struct nw_mod *const m = icfg->interp.m;
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const struct nw_mod_cfg *const mcfg = &m->cfg;
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FILE *const f = fopen(mcfg->path, "rb");
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struct search_fn fn;
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struct nw_frame fr = {0};
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*i = (const struct nw_inst){0};
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if (!f)
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{
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LOG("%s: fopen(3) %s: %s\n", __func__, mcfg->path, strerror(errno));
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goto end;
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}
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else if (m->sections.start)
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{
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/* TODO. */
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}
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else if (interp_start(&icfg->interp, f, &i->interp))
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{
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LOG("%s: interp_start failed\n", __func__);
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goto end;
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}
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else if (search_exported_fn("_start", m, f, &fn))
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{
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LOG("%s: search_exported_fn failed\n", __func__);
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goto end;
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}
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else if (section_global_push(f, m, &i->interp))
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{
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LOG("%s: section_global_push failed\n", __func__);
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goto end;
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}
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else if (section_type_push(f, m, fn.index, &fr))
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{
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LOG("%s: section_type_push failed\n", __func__);
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goto end;
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}
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else if (section_code_push(f, fn.start, &fr))
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{
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LOG("%s: section_code_push failed\n", __func__);
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goto end;
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}
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else if (interp_push(&i->interp, &fr))
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{
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LOG("%s: interp_push failed\n", __func__);
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goto end;
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}
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ret = 0;
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end:
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if (ret && f && fclose(f))
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{
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LOG("%s: fclose(3) %s: %s\n", __func__, mcfg->path, strerror(errno));
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ret = -1;
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}
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return ret;
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}
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