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Differential D29026 Diff 85602 sys/amd64/linux32/linux32_machdep.c

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sys/amd64/linux32/linux32_machdep.c

Show First 20 Lines • Show All 388 Lines • ▼ Show 20 Lineslinux_old_select(struct thread *td, struct linux_old_select_args *args)
newsel.exceptfds = PTRIN(linux_args.exceptfds); newsel.exceptfds = PTRIN(linux_args.exceptfds);
newsel.timeout = PTRIN(linux_args.timeout); newsel.timeout = PTRIN(linux_args.timeout);
return (linux_select(td, &newsel)); return (linux_select(td, &newsel));
} }
int int
linux_set_cloned_tls(struct thread *td, void *desc) linux_set_cloned_tls(struct thread *td, void *desc)
{ {
struct user_segment_descriptor sd;
struct l_user_desc info; struct l_user_desc info;
struct pcb *pcb; struct pcb *pcb;
int error; int error;
int a[2];
error = copyin(desc, &info, sizeof(struct l_user_desc)); error = copyin(desc, &info, sizeof(struct l_user_desc));
if (error) { if (error) {
linux_msg(td, "set_cloned_tls copyin info failed!"); linux_msg(td, "set_cloned_tls copyin info failed!");
} else { } else {
/* We might copy out the entry_number as GUGS32_SEL. */ /* We might copy out the entry_number as GUGS32_SEL. */
info.entry_number = GUGS32_SEL; info.entry_number = GUGS32_SEL;
error = copyout(&info, desc, sizeof(struct l_user_desc)); error = copyout(&info, desc, sizeof(struct l_user_desc));
if (error) if (error)
linux_msg(td, "set_cloned_tls copyout info failed!"); linux_msg(td, "set_cloned_tls copyout info failed!");
a[0] = LINUX_LDT_entry_a(&info);
a[1] = LINUX_LDT_entry_b(&info);
memcpy(&sd, &a, sizeof(a));
pcb = td->td_pcb; pcb = td->td_pcb;
update_pcb_bases(pcb);
pcb->pcb_gsbase = (register_t)info.base_addr; pcb->pcb_gsbase = (register_t)info.base_addr;
td->td_frame->tf_gs = GSEL(GUGS32_SEL, SEL_UPL); td->td_frame->tf_gs = GSEL(GUGS32_SEL, SEL_UPL);
set_pcb_flags(pcb, PCB_32BIT);
} }
return (error); return (error);
} }
int int
linux_set_upcall_kse(struct thread *td, register_t stack) linux_set_upcall_kse(struct thread *td, register_t stack)
{ {
▲ Show 20 Lines • Show All 234 Lines • ▼ Show 20 Lineslinux_getrusage(struct thread *td, struct linux_getrusage_args *uap)
return (error); return (error);
} }
int int
linux_set_thread_area(struct thread *td, linux_set_thread_area(struct thread *td,
struct linux_set_thread_area_args *args) struct linux_set_thread_area_args *args)
{ {
struct l_user_desc info; struct l_user_desc info;
struct user_segment_descriptor sd;
struct pcb *pcb; struct pcb *pcb;
int a[2];
int error; int error;
error = copyin(args->desc, &info, sizeof(struct l_user_desc)); error = copyin(args->desc, &info, sizeof(struct l_user_desc));
if (error) if (error)
return (error); return (error);
/* /*
* Semantics of Linux version: every thread in the system has array * Semantics of Linux version: every thread in the system has array
Show All 34 Lineslinux_set_thread_area(struct thread *td,
* *
* XXX: What if a user space program does not check the return value * XXX: What if a user space program does not check the return value
* and tries to use 6, 7 or 8? * and tries to use 6, 7 or 8?
*/ */
error = copyout(&info, args->desc, sizeof(struct l_user_desc)); error = copyout(&info, args->desc, sizeof(struct l_user_desc));
if (error) if (error)
return (error); return (error);
if (LINUX_LDT_empty(&info)) {
a[0] = 0;
a[1] = 0;
} else {
a[0] = LINUX_LDT_entry_a(&info);
a[1] = LINUX_LDT_entry_b(&info);
}
memcpy(&sd, &a, sizeof(a));
pcb = td->td_pcb; pcb = td->td_pcb;
update_pcb_bases(pcb);
pcb->pcb_gsbase = (register_t)info.base_addr; pcb->pcb_gsbase = (register_t)info.base_addr;
set_pcb_flags(pcb, PCB_32BIT);
update_gdt_gsbase(td, info.base_addr); update_gdt_gsbase(td, info.base_addr);
return (0); return (0);
} }
int futex_xchgl_nosmap(int oparg, uint32_t *uaddr, int *oldval); int futex_xchgl_nosmap(int oparg, uint32_t *uaddr, int *oldval);
int futex_xchgl_smap(int oparg, uint32_t *uaddr, int *oldval); int futex_xchgl_smap(int oparg, uint32_t *uaddr, int *oldval);
DEFINE_IFUNC(, int, futex_xchgl, (int, uint32_t *, int *)) DEFINE_IFUNC(, int, futex_xchgl, (int, uint32_t *, int *))
▲ Show 20 Lines • Show All 41 Lines • Show Last 20 Lines