2 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
12 #include <sys/utsname.h>
13 #include <sys/param.h>
15 #include "asm/types.h"
24 #include "kern_util.h"
28 #include "ptrace_user.h"
29 #include "uml-config.h"
32 #include "kern_constants.h"
34 void stack_protections(unsigned long address)
36 int prot = PROT_READ | PROT_WRITE | PROT_EXEC;
38 if(mprotect((void *) address, UM_KERN_PAGE_SIZE, prot) < 0)
39 panic("protecting stack failed, errno = %d", errno);
42 void task_protections(unsigned long address)
44 unsigned long guard = address + UM_KERN_PAGE_SIZE;
45 unsigned long stack = guard + UM_KERN_PAGE_SIZE;
49 if(mprotect((void *) stack, UM_KERN_PAGE_SIZE, prot) < 0)
50 panic("protecting guard page failed, errno = %d", errno);
52 pages = (1 << UML_CONFIG_KERNEL_STACK_ORDER) - 2;
53 prot = PROT_READ | PROT_WRITE | PROT_EXEC;
54 if(mprotect((void *) stack, pages * UM_KERN_PAGE_SIZE, prot) < 0)
55 panic("protecting stack failed, errno = %d", errno);
63 CATCH_EINTR(err = tcgetattr(fd, &tt));
69 CATCH_EINTR(err = tcsetattr(fd, TCSADRAIN, &tt));
73 /* XXX tcsetattr could have applied only some changes
74 * (and cfmakeraw() is a set of changes) */
78 void setup_machinename(char *machine_out)
83 #ifdef UML_CONFIG_UML_X86
84 # ifndef UML_CONFIG_64BIT
85 if (!strcmp(host.machine, "x86_64")) {
86 strcpy(machine_out, "i686");
90 if (!strcmp(host.machine, "i686")) {
91 strcpy(machine_out, "x86_64");
96 strcpy(machine_out, host.machine);
99 void setup_hostinfo(char *buf, int len)
104 snprintf(buf, len, "%s %s %s %s %s", host.sysname, host.nodename,
105 host.release, host.version, host.machine);
108 int setjmp_wrapper(void (*proc)(void *, void *), ...)
114 n = UML_SETJMP(&buf);
116 va_start(args, proc);
117 (*proc)(&buf, &args);
123 void os_dump_core(void)
125 signal(SIGSEGV, SIG_DFL);