implement inline 5- and 6-argument syscalls for mipsn32 and mips64

[oweals/musl.git] / arch / mipsn32 / syscall_arch.h

diff --git a/arch/mipsn32/syscall_arch.h b/arch/mipsn32/syscall_arch.h
index f6a1fbaed0cbbe180ec81ccde2af49a67ccf5b7e..2ebf03066242a87709f91010a69e13c7f39ca5c9 100644 (file)
--- a/arch/mipsn32/syscall_arch.h
+++ b/arch/mipsn32/syscall_arch.h
@@ -1,8 +1,6 @@
 #define __SYSCALL_LL_E(x) (x)
 #define __SYSCALL_LL_O(x) (x)
 
-hidden long (__syscall)(long, ...);
-
 #define SYSCALL_RLIM_INFINITY (-1UL/2)
 
 #if _MIPSEL || __MIPSEL || __MIPSEL__
@@ -102,8 +100,18 @@ static inline long __syscall4(long n, long a, long b, long c, long d)
 
 static inline long __syscall5(long n, long a, long b, long c, long d, long e)
 {
-       long r2 = (__syscall)(n, a, b, c, d, e);
-       if (r2 > -4096UL) return r2;
+       register long r4 __asm__("$4") = a;
+       register long r5 __asm__("$5") = b;
+       register long r6 __asm__("$6") = c;
+       register long r7 __asm__("$7") = d;
+       register long r8 __asm__("$8") = e;
+       register long r2 __asm__("$2");
+       __asm__ __volatile__ (
+               "addu $2,$0,%2 ; syscall"
+               : "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
+                 "r"(r4), "r"(r5), "r"(r6), "r"(r8)
+               : "$1", "$3", "$9", "$10", "$11", "$12", "$13",
+                 "$14", "$15", "$24", "$25", "hi", "lo", "memory");
        if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
        if (n == SYS_newfstatat) __stat_fix(c);
        return r2;
@@ -111,8 +119,19 @@ static inline long __syscall5(long n, long a, long b, long c, long d, long e)
 
 static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
 {
-       long r2 = (__syscall)(n, a, b, c, d, e, f);
-       if (r2 > -4096UL) return r2;
+       register long r4 __asm__("$4") = a;
+       register long r5 __asm__("$5") = b;
+       register long r6 __asm__("$6") = c;
+       register long r7 __asm__("$7") = d;
+       register long r8 __asm__("$8") = e;
+       register long r8 __asm__("$9") = f;
+       register long r2 __asm__("$2");
+       __asm__ __volatile__ (
+               "addu $2,$0,%2 ; syscall"
+               : "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
+                 "r"(r4), "r"(r5), "r"(r6), "r"(r8), "r"(r9)
+               : "$1", "$3", "$10", "$11", "$12", "$13",
+                 "$14", "$15", "$24", "$25", "hi", "lo", "memory");
        if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
        if (n == SYS_newfstatat) __stat_fix(c);
        return r2;