| /* | |
| * Copyright 2017, Data61, CSIRO (ABN 41 687 119 230) | |
| * | |
| * SPDX-License-Identifier: BSD-2-Clause | |
| */ | |
| #include <sel4debug/debug.h> | |
| #include <sel4/sel4.h> | |
| #include <stdarg.h> | |
| #include <stdio.h> | |
| int | |
| debug_safe_printf(const char *format, ...) | |
| { | |
| seL4_IPCBuffer shadow_buffer; /* XXX: Should we avoid allocating | |
| * this large struct on the stack? | |
| */ | |
| /* Assume that the standard printf may clobber the IPC buffer, so save it | |
| * before. | |
| */ | |
| shadow_buffer = *(seL4_GetIPCBuffer()); | |
| /* Copied from printf: */ | |
| int ret; | |
| va_list ap; | |
| va_start(ap, format); | |
| ret = vfprintf(stdout, format, ap); | |
| va_end(ap); | |
| /* Now restore the IPC buffer. */ | |
| *(seL4_GetIPCBuffer()) = shadow_buffer; | |
| return ret; | |
| } |