fix regression disabling use of pause instruction for x86 a_spin

[musl] / arch / x32 / syscall_arch.h

diff --git a/arch/x32/syscall_arch.h b/arch/x32/syscall_arch.h
index 57e7689..344da03 100644 (file)
--- a/arch/x32/syscall_arch.h
+++ b/arch/x32/syscall_arch.h
@@ -2,10 +2,36 @@
 #define __SYSCALL_LL_O(x) (x)
 
 #define __scc(X) sizeof(1?(X):0ULL) < 8 ? (unsigned long) (X) : (long long) (X)
-#define syscall_arg_t long long
+typedef long long syscall_arg_t;
 struct __timespec { long long tv_sec; long tv_nsec; };
 struct __timespec_kernel { long long tv_sec; long long tv_nsec; };
 #define __tsc(X) ((struct __timespec*)(unsigned long)(X))
+#define __fixup(X) do { if(X) { \
+       ts->tv_sec = __tsc(X)->tv_sec; \
+       ts->tv_nsec = __tsc(X)->tv_nsec; \
+       (X) = (unsigned long)ts; } } while(0)
+#define __fixup_case_2 \
+       case SYS_nanosleep: \
+               __fixup(a1); break; \
+       case SYS_clock_settime: \
+               __fixup(a2); break;
+#define __fixup_case_3 \
+       case SYS_clock_nanosleep: case SYS_rt_sigtimedwait: case SYS_ppoll: \
+               __fixup(a3); break; \
+       case SYS_utimensat: \
+               if(a3) { \
+                       ts[0].tv_sec = __tsc(a3)[0].tv_sec; \
+                       ts[0].tv_nsec = __tsc(a3)[0].tv_nsec; \
+                       ts[1].tv_sec = __tsc(a3)[1].tv_sec; \
+                       ts[1].tv_nsec = __tsc(a3)[1].tv_nsec; \
+                       a3 = (unsigned long)ts; \
+               } break;
+#define __fixup_case_4 \
+       case SYS_futex: \
+               if((a2 & (~128 /* FUTEX_PRIVATE_FLAG */)) == 0 /* FUTEX_WAIT */) __fixup(a4); break;
+#define __fixup_case_5 \
+       case SYS_mq_timedsend: case SYS_mq_timedreceive: case SYS_pselect6: \
+               __fixup(a5); break;
 
 static __inline long __syscall0(long long n)
 {
@@ -24,15 +50,9 @@ static __inline long __syscall1(long long n, long long a1)
 static __inline long __syscall2(long long n, long long a1, long long a2)
 {
        unsigned long ret;
-       struct __timespec *ts2 = 0;
+       struct __timespec_kernel ts[1];
        switch (n) {
-       case SYS_nanosleep:
-               if(a1) a1 = (unsigned long) (&(struct __timespec_kernel) {
-               .tv_sec = __tsc(a1)->tv_sec, .tv_nsec = __tsc(a1)->tv_nsec});
-               break;
-       case SYS_clock_settime:
-               if(a2) a2 = (unsigned long) (&(struct __timespec_kernel) {
-               .tv_sec = __tsc(a2)->tv_sec, .tv_nsec = __tsc(a2)->tv_nsec});
+               __fixup_case_2;
        }
        __asm__ __volatile__ ("syscall" : "=a"(ret) : "a"(n), "D"(a1), "S"(a2)
                                        : "rcx", "r11", "memory");
@@ -42,80 +62,65 @@ static __inline long __syscall2(long long n, long long a1, long long a2)
 static __inline long __syscall3(long long n, long long a1, long long a2, long long a3)
 {
        unsigned long ret;
+       struct __timespec_kernel ts[2];
+       switch (n) {
+               __fixup_case_2;
+               __fixup_case_3;
+       }
        __asm__ __volatile__ ("syscall" : "=a"(ret) : "a"(n), "D"(a1), "S"(a2),
                                                  "d"(a3) : "rcx", "r11", "memory");
        return ret;
 }
 
 static __inline long __syscall4(long long n, long long a1, long long a2, long long a3,
-                                     long long a4)
+                                     long long a4_)
 {
        unsigned long ret;
-       register long long r10 __asm__("r10") = a4;
+       register long long a4 __asm__("r10") = a4_;
+       struct __timespec_kernel ts[2];
        switch (n) {
-       case SYS_futex:
-               if((a2 & (~128 /* FUTEX_PRIVATE_FLAG */)) == 0 /* FUTEX_WAIT */) {
-                       if(r10) r10 = (unsigned long) (&(struct __timespec_kernel) {
-                       .tv_sec = __tsc(r10)->tv_sec, .tv_nsec = __tsc(r10)->tv_nsec});
-               }
-               break;
-       case SYS_utimensat:
-               if(a3) a3 = (unsigned long) ((struct __timespec_kernel[2]) {
-               [0] = {.tv_sec = __tsc(a3)[0].tv_sec, .tv_nsec = __tsc(a3)[0].tv_nsec},
-               [1] = {.tv_sec = __tsc(a3)[1].tv_sec, .tv_nsec = __tsc(a3)[1].tv_nsec},
-               });
-               break;
-       case SYS_clock_nanosleep:
-       case SYS_rt_sigtimedwait: case SYS_ppoll:
-               if(a3) a3 = (unsigned long) (&(struct __timespec_kernel) {
-               .tv_sec = __tsc(a3)->tv_sec, .tv_nsec = __tsc(a3)->tv_nsec});
+               __fixup_case_2;
+               __fixup_case_3;
+               __fixup_case_4;
        }
        __asm__ __volatile__ ("syscall" : "=a"(ret) : "a"(n), "D"(a1), "S"(a2),
-                                         "d"(a3), "r"(r10): "rcx", "r11", "memory");
+                                         "d"(a3), "r"(a4): "rcx", "r11", "memory");
        return ret;
 }
 
 static __inline long __syscall5(long long n, long long a1, long long a2, long long a3,
-                                     long long a4, long long a5)
+                                     long long a4_, long long a5_)
 {
        unsigned long ret;
-       register long long r10 __asm__("r10") = a4;
-       register long long r8 __asm__("r8") = a5;
+       register long long a4 __asm__("r10") = a4_;
+       register long long a5 __asm__("r8") = a5_;
+       struct __timespec_kernel ts[2];
        switch (n) {
-       case SYS_futex:
-               if((a2 & (~128 /* FUTEX_PRIVATE_FLAG */)) == 0 /* FUTEX_WAIT */) {
-                       if(r10) r10 = (unsigned long) (&(struct __timespec_kernel) {
-                       .tv_sec = __tsc(r10)->tv_sec, .tv_nsec = __tsc(r10)->tv_nsec});
-               }
-               break;
-       case SYS_mq_timedsend: case SYS_mq_timedreceive:
-               if(r8) r8 = (unsigned long) (&(struct __timespec_kernel) {
-               .tv_sec = __tsc(r8)->tv_sec, .tv_nsec = __tsc(r8)->tv_nsec});
+               __fixup_case_2;
+               __fixup_case_3;
+               __fixup_case_4;
+               __fixup_case_5;
        }
        __asm__ __volatile__ ("syscall" : "=a"(ret) : "a"(n), "D"(a1), "S"(a2),
-                                         "d"(a3), "r"(r10), "r"(r8) : "rcx", "r11", "memory");
+                                         "d"(a3), "r"(a4), "r"(a5) : "rcx", "r11", "memory");
        return ret;
 }
 
 static __inline long __syscall6(long long n, long long a1, long long a2, long long a3,
-                                     long long a4, long long a5, long long a6)
+                                     long long a4_, long long a5_, long long a6_)
 {
        unsigned long ret;
-       register long long r10 __asm__("r10") = a4;
-       register long long r8 __asm__("r8") = a5;
-       register long long r9 __asm__("r9") = a6;
+       register long long a4 __asm__("r10") = a4_;
+       register long long a5 __asm__("r8") = a5_;
+       register long long a6 __asm__("r9") = a6_;
+       struct __timespec_kernel ts[2];
        switch (n) {
-       case SYS_futex:
-               if((a2 & (~128 /* FUTEX_PRIVATE_FLAG */)) == 0 /* FUTEX_WAIT */) {
-                       if(r10) r10 = (unsigned long) (&(struct __timespec_kernel) {
-                       .tv_sec = __tsc(r10)->tv_sec, .tv_nsec = __tsc(r10)->tv_nsec});
-               }
-               break;
-       case SYS_pselect6:
-               if(r8) r8 = (unsigned long) (&(struct __timespec_kernel) {
-               .tv_sec = __tsc(r8)->tv_sec, .tv_nsec = __tsc(r8)->tv_nsec});
+               __fixup_case_2;
+               __fixup_case_3;
+               __fixup_case_4;
+               __fixup_case_5;
        }
        __asm__ __volatile__ ("syscall" : "=a"(ret) : "a"(n), "D"(a1), "S"(a2),
-                                         "d"(a3), "r"(r10), "r"(r8), "r"(r9) : "rcx", "r11", "memory");
+                                         "d"(a3), "r"(a4), "r"(a5), "r"(a6) : "rcx", "r11", "memory");
        return ret;
 }