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d05aaedaab
it's legal to call the __syscall functions with more arguments than necessary, and the __syscall_cp cancel dummy impl. does just that. thus we must insert the switch for all possible syscalls numbers into all of the syscallN inline functions.
118 lines
3.6 KiB
C
118 lines
3.6 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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struct __timespec { long long tv_sec; long tv_nsec; };
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struct __timespec_kernel { long long tv_sec; long long tv_nsec; };
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#define __tsc(X) ((struct __timespec*)(unsigned long)(X))
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#define __fixup(X) do { if(X) X = (unsigned long) (&(struct __timespec_kernel) \
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{ .tv_sec = __tsc(X)->tv_sec, .tv_nsec = __tsc(X)->tv_nsec}); } while(0)
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#define __fixup_case_2 \
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case SYS_nanosleep: \
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__fixup(a1); break; \
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case SYS_clock_settime: \
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__fixup(a2); break;
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#define __fixup_case_3 \
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case SYS_clock_nanosleep: case SYS_rt_sigtimedwait: case SYS_ppoll: \
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__fixup(a3); break; \
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case SYS_utimensat: \
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if(a3) a3 = (unsigned long) ((struct __timespec_kernel[2]) { \
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[0] = {.tv_sec = __tsc(a3)[0].tv_sec, .tv_nsec = __tsc(a3)[0].tv_nsec}, \
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[1] = {.tv_sec = __tsc(a3)[1].tv_sec, .tv_nsec = __tsc(a3)[1].tv_nsec}, \
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}); break;
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#define __fixup_case_4 \
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case SYS_futex: \
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if((a2 & (~128 /* FUTEX_PRIVATE_FLAG */)) == 0 /* FUTEX_WAIT */) __fixup(a4); break;
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#define __fixup_case_5 \
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case SYS_mq_timedsend: case SYS_mq_timedreceive: case SYS_pselect6: \
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__fixup(a5); break;
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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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struct __timespec *ts2 = 0;
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switch (n) {
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__fixup_case_2;
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}
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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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switch (n) {
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__fixup_case_2;
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__fixup_case_3;
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}
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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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switch (n) {
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__fixup_case_2;
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__fixup_case_3;
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__fixup_case_4;
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}
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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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switch (n) {
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__fixup_case_2;
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__fixup_case_3;
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__fixup_case_4;
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__fixup_case_5;
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}
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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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switch (n) {
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__fixup_case_2;
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__fixup_case_3;
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__fixup_case_4;
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__fixup_case_5;
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}
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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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