#include <unistd.h>
#include <errno.h>
#include <signal.h>
-#include <setjmp.h>
#include <sched.h>
#include "ptrace_user.h"
#include <sys/wait.h>
static int userspace_tramp(void *stack)
{
void *addr;
+ int err;
ptrace(PTRACE_TRACEME, 0, 0, 0);
- init_new_thread_signals(1);
- enable_timer();
+ init_new_thread_signals();
+ err = set_interval(1);
+ if(err)
+ panic("userspace_tramp - setting timer failed, errno = %d\n",
+ err);
if(!proc_mm){
/* This has a pte, but it can't be mapped in with the usual
}
}
if(!ptrace_faultinfo && (stack != NULL)){
+ struct sigaction sa;
+
unsigned long v = UML_CONFIG_STUB_CODE +
(unsigned long) stub_segv_handler -
(unsigned long) &__syscall_stub_start;
set_sigstack((void *) UML_CONFIG_STUB_DATA, page_size());
- set_handler(SIGSEGV, (void *) v, SA_ONSTACK,
- SIGIO, SIGWINCH, SIGALRM, SIGVTALRM,
- SIGUSR1, -1);
+ sigemptyset(&sa.sa_mask);
+ sigaddset(&sa.sa_mask, SIGIO);
+ sigaddset(&sa.sa_mask, SIGWINCH);
+ sigaddset(&sa.sa_mask, SIGALRM);
+ sigaddset(&sa.sa_mask, SIGVTALRM);
+ sigaddset(&sa.sa_mask, SIGUSR1);
+ sa.sa_flags = SA_ONSTACK;
+ sa.sa_handler = (void *) v;
+ sa.sa_restorer = NULL;
+ if(sigaction(SIGSEGV, &sa, NULL) < 0)
+ panic("userspace_tramp - setting SIGSEGV handler "
+ "failed - errno = %d\n", errno);
}
os_stop_process(os_getpid());
if(err)
panic("userspace - could not resume userspace process, "
"pid=%d, ptrace operation = %d, errno = %d\n",
- op, errno);
+ pid, op, errno);
CATCH_EINTR(err = waitpid(pid, &status, WUNTRACED));
if(err < 0)
err = ptrace_setregs(pid, regs);
if(err < 0)
panic("copy_context_skas0 : PTRACE_SETREGS failed, "
- "pid = %d, errno = %d\n", pid, errno);
+ "pid = %d, errno = %d\n", pid, -err);
err = ptrace_setfpregs(pid, fp_regs);
if(err < 0)
panic("copy_context_skas0 : PTRACE_SETFPREGS failed, "
- "pid = %d, errno = %d\n", pid, errno);
+ "pid = %d, errno = %d\n", pid, -err);
/* set a well known return code for detection of child write failure */
child_data->err = 12345678;
pid = data->err;
if(pid < 0)
panic("copy_context_skas0 - stub-parent reports error %d\n",
- pid);
+ -pid);
/* Wait, until child has finished too: read child's result from
* child's stack and check it.
*/
wait_stub_done(pid, -1, "copy_context_skas0");
if (child_data->err != UML_CONFIG_STUB_DATA)
- panic("copy_context_skas0 - stub-child reports error %d\n",
+ panic("copy_context_skas0 - stub-child reports error %ld\n",
child_data->err);
if (ptrace(PTRACE_OLDSETOPTIONS, pid, NULL,
void (*handler)(int))
{
unsigned long flags;
- sigjmp_buf switch_buf, fork_buf;
- int enable;
+ jmp_buf switch_buf, fork_buf;
*switch_buf_ptr = &switch_buf;
*fork_buf_ptr = &fork_buf;
*/
flags = get_signals();
block_signals();
- if(UML_SIGSETJMP(&fork_buf, enable) == 0)
+ if(UML_SETJMP(&fork_buf) == 0)
new_thread_proc(stack, handler);
remove_sigstack();
void thread_wait(void *sw, void *fb)
{
- sigjmp_buf buf, **switch_buf = sw, *fork_buf;
- int enable;
+ jmp_buf buf, **switch_buf = sw, *fork_buf;
*switch_buf = &buf;
fork_buf = fb;
- if(UML_SIGSETJMP(&buf, enable) == 0)
- siglongjmp(*fork_buf, INIT_JMP_REMOVE_SIGSTACK);
+ if(UML_SETJMP(&buf) == 0)
+ UML_LONGJMP(fork_buf, INIT_JMP_REMOVE_SIGSTACK);
}
void switch_threads(void *me, void *next)
{
- sigjmp_buf my_buf, **me_ptr = me, *next_buf = next;
- int enable;
+ jmp_buf my_buf, **me_ptr = me, *next_buf = next;
*me_ptr = &my_buf;
- if(UML_SIGSETJMP(&my_buf, enable) == 0)
- UML_SIGLONGJMP(next_buf, 1);
+ if(UML_SETJMP(&my_buf) == 0)
+ UML_LONGJMP(next_buf, 1);
}
-static sigjmp_buf initial_jmpbuf;
+static jmp_buf initial_jmpbuf;
/* XXX Make these percpu */
static void (*cb_proc)(void *arg);
static void *cb_arg;
-static sigjmp_buf *cb_back;
+static jmp_buf *cb_back;
int start_idle_thread(void *stack, void *switch_buf_ptr, void **fork_buf_ptr)
{
- sigjmp_buf **switch_buf = switch_buf_ptr;
- int n, enable;
+ jmp_buf **switch_buf = switch_buf_ptr;
+ int n;
set_handler(SIGWINCH, (__sighandler_t) sig_handler,
SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGALRM,
SIGVTALRM, -1);
*fork_buf_ptr = &initial_jmpbuf;
- n = UML_SIGSETJMP(&initial_jmpbuf, enable);
+ n = UML_SETJMP(&initial_jmpbuf);
switch(n){
case INIT_JMP_NEW_THREAD:
new_thread_proc((void *) stack, new_thread_handler);
break;
case INIT_JMP_CALLBACK:
(*cb_proc)(cb_arg);
- UML_SIGLONGJMP(cb_back, 1);
+ UML_LONGJMP(cb_back, 1);
break;
case INIT_JMP_HALT:
kmalloc_ok = 0;
default:
panic("Bad sigsetjmp return in start_idle_thread - %d\n", n);
}
- UML_SIGLONGJMP(*switch_buf, 1);
+ UML_LONGJMP(*switch_buf, 1);
}
void initial_thread_cb_skas(void (*proc)(void *), void *arg)
{
- sigjmp_buf here;
- int enable;
+ jmp_buf here;
cb_proc = proc;
cb_arg = arg;
cb_back = &here;
block_signals();
- if(UML_SIGSETJMP(&here, enable) == 0)
- UML_SIGLONGJMP(&initial_jmpbuf, INIT_JMP_CALLBACK);
+ if(UML_SETJMP(&here) == 0)
+ UML_LONGJMP(&initial_jmpbuf, INIT_JMP_CALLBACK);
unblock_signals();
cb_proc = NULL;
void halt_skas(void)
{
block_signals();
- UML_SIGLONGJMP(&initial_jmpbuf, INIT_JMP_HALT);
+ UML_LONGJMP(&initial_jmpbuf, INIT_JMP_HALT);
}
void reboot_skas(void)
{
block_signals();
- UML_SIGLONGJMP(&initial_jmpbuf, INIT_JMP_REBOOT);
+ UML_LONGJMP(&initial_jmpbuf, INIT_JMP_REBOOT);
}
void switch_mm_skas(struct mm_id *mm_idp)
projects / linux-2.6-omap-h63xx.git / blobdiff