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stage1: add more wasi.c stubs

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Because `std.Io` forces analysis of unused functions in the vtable,
there are now references to 4 more WASI functions, even though the
compiler does not actually call them at runtime.

Therefore, these new stubs fix the bootstrap process after a zig1.wasm
update (though this branch does *not* update zig1.wasm).
This commit is contained in:
Matthew Lugg 2025-12-27 10:23:46 +00:00
parent d8460910b4
commit 60a1ba0a8f
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GPG key ID: 3F5B7DCCBF4AF02E
1 changed files with 61 additions and 0 deletions
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61
stage1/wasi.c
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@ -939,6 +939,58 @@ uint32_t wasi_snapshot_preview1_path_remove_directory(uint32_t fd, uint32_t path
return wasi_errno_success;
}
uint32_t wasi_snapshot_preview1_path_symlink(uint32_t old_path, uint32_t old_path_len, uint32_t fd, uint32_t new_path, uint32_t new_path_len) {
uint8_t *const m = *wasm_memory;
const char *old_path_ptr = (const char *)&m[old_path];
const char *new_path_ptr = (const char *)&m[new_path];
#if LOG_TRACE
fprintf(stderr, "wasi_snapshot_preview1_path_symlink(\"%.*s\", %u, \"%.*s\")\n", (int)old_path_len, old_path_ptr, fd, (int)new_path_len, new_path_ptr);
#endif
(void)old_path_ptr;
(void)old_path_len;
(void)fd;
(void)new_path_ptr;
(void)new_path_len;
panic("unimplemented: path_symlink");
return wasi_errno_success;
}
uint32_t wasi_snapshot_preview1_path_readlink(uint32_t fd, uint32_t path, uint32_t path_len, uint32_t buf, uint32_t buf_len, uint32_t out_len) {
uint8_t *const m = *wasm_memory;
const char *path_ptr = (const char *)&m[path];
char *buf_ptr = (char *)&m[buf];
uint32_t *out_len_ptr = (uint32_t *)&m[out_len];
#if LOG_TRACE
fprintf(stderr, "wasi_snapshot_preview1_path_readlink(%u, \"%.*s\", 0x%X, %u, 0x%X)\n", fd, (int)path_len, path_ptr, buf, buf_len, out_len);
#endif
(void)fd;
(void)path_ptr;
(void)path_len;
(void)buf_ptr;
(void)buf_len;
(void)out_len_ptr;
panic("unimplemented: path_readlink");
return wasi_errno_success;
}
uint32_t wasi_snapshot_preview1_path_link(uint32_t old_fd, uint32_t old_flags, uint32_t old_path, uint32_t old_path_len, uint32_t new_fd, uint32_t new_path, uint32_t new_path_len) {
uint8_t *const m = *wasm_memory;
const char *old_path_ptr = (const char *)&m[old_path];
const char *new_path_ptr = (const char *)&m[new_path];
#if LOG_TRACE
fprintf(stderr, "wasi_snapshot_preview1_path_link(%u, 0x%X, \"%.*s\", %u, \"%.*s\")\n", old_fd, old_flags, (int)old_path_len, old_path_ptr, new_fd, (int)new_path_len, new_path_ptr);
#endif
(void)old_fd;
(void)old_flags;
(void)old_path_ptr;
(void)old_path_len;
(void)new_fd;
(void)new_path_ptr;
(void)new_path_len;
panic("unimplemented: path_link");
return wasi_errno_success;
}
uint32_t wasi_snapshot_preview1_path_unlink_file(uint32_t fd, uint32_t path, uint32_t path_len) {
uint8_t *const m = *wasm_memory;
const char *path_ptr = (const char *)&m[path];
@ -1038,6 +1090,15 @@ uint32_t wasi_snapshot_preview1_fd_seek(uint32_t fd, uint64_t in_offset, uint32_
return wasi_errno_success;
}
uint32_t wasi_snapshot_preview1_fd_sync(uint32_t fd) {
#if LOG_TRACE
fprintf(stderr, "wasi_snapshot_preview1_fd_sync(%u)\n", fd);
#endif
(void)fd;
panic("unimplemented: fd_sync");
return wasi_errno_success;
}
uint32_t wasi_snapshot_preview1_poll_oneoff(uint32_t in, uint32_t out, uint32_t nsubscriptions, uint32_t res_nevents) {
(void)in;
(void)out;