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4c307bed03
the x32 syscall interfaces treat timespec's tv_nsec member as 64-bit
despite the API type being long and long being 32-bit in the ABI. this
is no problem for syscalls that store timespecs to userspace as
results, but caused uninitialized padding to be misinterpreted as the
high bits in syscalls that take timespecs as input.
since the beginning of the port, we've dealt with this situation with
hacks in syscall_arch.h, and injected between __syscall_cp_c and
__syscall_cp_asm, to special-case the syscall numbers that involve
timespecs as inputs and copy them to a form suitable to pass to the
kernel.
commit 40aa18d55a set the stage for
removal of these hacks by letting us treat the "normal" x32 syscalls
dealing with timespec as if they're x32's "time64" syscalls,
effectively making x32 ax "time64-only 32-bit arch" like riscv32 will
be when it's added. since then, all users of syscalls that x32's
syscall_arch.h had hacks for have been updated to use time64 syscalls,
so the hacks can be removed.
there are still at least a few other timespec-related syscalls broken
on x32, which were overlooked when the x32 hacks were done or added
later. these include at least recvmmsg, adjtimex/clock_adjtime, and
timerfd_settime, and they will be fixed independently later on.
90 lines
3.0 KiB
C
90 lines
3.0 KiB
C
#define __SYSCALL_LL_E(x) (x)
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#define __SYSCALL_LL_O(x) (x)
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#define __scc(X) sizeof(1?(X):0ULL) < 8 ? (unsigned long) (X) : (long long) (X)
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typedef long long syscall_arg_t;
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static __inline long __syscall0(long long n)
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{
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unsigned long ret;
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__asm__ __volatile__ ("syscall" : "=a"(ret) : "a"(n) : "rcx", "r11", "memory");
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return ret;
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}
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static __inline long __syscall1(long long n, long long a1)
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{
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unsigned long ret;
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__asm__ __volatile__ ("syscall" : "=a"(ret) : "a"(n), "D"(a1) : "rcx", "r11", "memory");
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return ret;
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}
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static __inline long __syscall2(long long n, long long a1, long long a2)
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{
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unsigned long ret;
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__asm__ __volatile__ ("syscall" : "=a"(ret) : "a"(n), "D"(a1), "S"(a2)
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: "rcx", "r11", "memory");
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return ret;
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}
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static __inline long __syscall3(long long n, long long a1, long long a2, long long a3)
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{
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unsigned long ret;
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__asm__ __volatile__ ("syscall" : "=a"(ret) : "a"(n), "D"(a1), "S"(a2),
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"d"(a3) : "rcx", "r11", "memory");
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return ret;
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}
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static __inline long __syscall4(long long n, long long a1, long long a2, long long a3,
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long long a4_)
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{
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unsigned long ret;
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register long long a4 __asm__("r10") = a4_;
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__asm__ __volatile__ ("syscall" : "=a"(ret) : "a"(n), "D"(a1), "S"(a2),
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"d"(a3), "r"(a4): "rcx", "r11", "memory");
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return ret;
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}
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static __inline long __syscall5(long long n, long long a1, long long a2, long long a3,
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long long a4_, long long a5_)
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{
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unsigned long ret;
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register long long a4 __asm__("r10") = a4_;
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register long long a5 __asm__("r8") = a5_;
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__asm__ __volatile__ ("syscall" : "=a"(ret) : "a"(n), "D"(a1), "S"(a2),
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"d"(a3), "r"(a4), "r"(a5) : "rcx", "r11", "memory");
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return ret;
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}
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static __inline long __syscall6(long long n, long long a1, long long a2, long long a3,
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long long a4_, long long a5_, long long a6_)
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{
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unsigned long ret;
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register long long a4 __asm__("r10") = a4_;
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register long long a5 __asm__("r8") = a5_;
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register long long a6 __asm__("r9") = a6_;
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__asm__ __volatile__ ("syscall" : "=a"(ret) : "a"(n), "D"(a1), "S"(a2),
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"d"(a3), "r"(a4), "r"(a5), "r"(a6) : "rcx", "r11", "memory");
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return ret;
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}
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#undef SYS_futimesat
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#define SYS_clock_gettime64 SYS_clock_gettime
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#define SYS_clock_settime64 SYS_clock_settime
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#define SYS_clock_adjtime64 SYS_clock_adjtime
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#define SYS_clock_nanosleep_time64 SYS_clock_nanosleep
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#define SYS_timer_gettime64 SYS_timer_gettime
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#define SYS_timer_settime64 SYS_timer_settime
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#define SYS_timerfd_gettime64 SYS_timerfd_gettime
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#define SYS_timerfd_settime64 SYS_timerfd_settime
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#define SYS_utimensat_time64 SYS_utimensat
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#define SYS_pselect6_time64 SYS_pselect6
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#define SYS_ppoll_time64 SYS_ppoll
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#define SYS_recvmmsg_time64 SYS_recvmmsg
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#define SYS_mq_timedsend_time64 SYS_mq_timedsend
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#define SYS_mq_timedreceive_time64 SYS_mq_timedreceive
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#define SYS_semtimedop_time64 SYS_semtimedop
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#define SYS_rt_sigtimedwait_time64 SYS_rt_sigtimedwait
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#define SYS_futex_time64 SYS_futex
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#define SYS_sched_rr_get_interval_time64 SYS_sched_rr_get_interval
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