| /* | |
| * Copyright 2017, Data61 | |
| * Commonwealth Scientific and Industrial Research Organisation (CSIRO) | |
| * ABN 41 687 119 230. | |
| * | |
| * This software may be distributed and modified according to the terms of | |
| * the BSD 2-Clause license. Note that NO WARRANTY is provided. | |
| * See "LICENSE_BSD2.txt" for details. | |
| * | |
| * @TAG(DATA61_BSD) | |
| */ | |
| #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; | |
| } |