| // Copyright 2017 syzkaller project authors. All rights reserved. |
| // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file. |
| |
| #include <errno.h> |
| #include <pthread.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <zircon/syscalls.h> |
| |
| #include "nocover.h" |
| |
| static void os_init(int argc, char** argv, void* data, size_t data_size) |
| { |
| zx_status_t status = syz_mmap((size_t)data, data_size); |
| if (status != ZX_OK) |
| fail("mmap of data segment failed with: %d", status); |
| } |
| |
| static intptr_t execute_syscall(const call_t* c, intptr_t a[kMaxArgs]) |
| { |
| intptr_t res = c->call(a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8]); |
| if (strncmp(c->name, "zx_", 3) == 0) { |
| // Convert zircon error convention to the libc convention that executor expects. |
| // The following calls return arbitrary integers instead of error codes. |
| if (res == ZX_OK || |
| !strcmp(c->name, "zx_debuglog_read") || |
| !strcmp(c->name, "zx_clock_get") || |
| !strcmp(c->name, "zx_clock_get_monotonic") || |
| !strcmp(c->name, "zx_deadline_after") || |
| !strcmp(c->name, "zx_ticks_get")) |
| return 0; |
| errno = (-res) & 0x7f; |
| return -1; |
| } |
| // We cast libc functions to signature returning intptr_t, |
| // as the result int -1 is returned as 0x00000000ffffffff rather than full -1. |
| if (res == 0xffffffff) |
| res = (intptr_t)-1; |
| return res; |
| } |