static int cch_seq_show(struct seq_file *file, void *data)
{
long gid = *(long *)data;
int i;
struct gru_state *gru = GID_TO_GRU(gid);
struct gru_thread_state *ts;
const char *mode[] = { "??", "UPM", "INTR", "OS_POLL" };
if (gid == 0)
seq_printf(file, "#%5s%5s%6s%7s%9s%6s%8s%8s\n", "gid", "bid",
"ctx#", "asid", "pid", "cbrs", "dsbytes", "mode");
if (gru)
for (i = 0; i < GRU_NUM_CCH; i++) {
ts = gru->gs_gts[i];
if (!ts)
continue;
seq_printf(file, " %5d%5d%6d%7d%9d%6d%8d%8s\n",
gru->gs_gid, gru->gs_blade_id, i,
is_kernel_context(ts) ? 0 : ts->ts_gms->ms_asids[gid].mt_asid,
is_kernel_context(ts) ? 0 : ts->ts_tgid_owner,
ts->ts_cbr_au_count * GRU_CBR_AU_SIZE,
ts->ts_cbr_au_count * GRU_DSR_AU_BYTES,
mode[ts->ts_user_options &
GRU_OPT_MISS_MASK]);
}
return 0;
}
static void dump_context(struct ucontext *cx)
{
kprintf("iret_eip = 0x%lx\n", cx->iret_eip);
kprintf("iret_cs = 0x%lx\n", cx->iret_cs);
kprintf("iret_elfags = 0x%lx\n", cx->eflags);
if (!is_kernel_context(cx)) {
kprintf("iret_esp = 0x%lx\n", cx->iret_esp);
kprintf("iret_ss = 0x%lx\n", cx->iret_ss);
}
dump_registers(&cx->reg);
}
static void segfault(int code, unsigned long error, void *addr)
{
kprintf("Segmentation fault: %s mode %s at 0x%p%s\n",
(error & PGF_USER) ? "user" : "kernel",
(error & PGF_WRITE) ? "write" : "read",
addr,
(error & PGF_PERM) ? "" : " (page not present)");
dump_context(current->esp);
if (is_kernel_context(current->esp))
panic("Segfault in kernel");
__kill(current, SIGSEGV, code);
}
static unsigned long get_error_code(struct ucontext *cx)
{
unsigned long error = cx->reg.stack[0];
cx->reg.stack[0] = cx->reg.stack[1];
cx->reg.stack[1] = cx->reg.stack[2];
cx->reg.stack[2] = cx->reg.stack[3];
if (!is_kernel_context(cx)) {
cx->reg.stack[3] = cx->reg.stack[4];
cx->reg.stack[4] = cx->reg.stack[5];
}
return error;
}
