syscall organization overhaul

now public syscall.h only exposes __NR_* and SYS_* constants and the
variadic syscall function. no macros or inline functions, no
__syscall_ret or other internal details, no 16-/32-bit legacy syscall
renaming, etc. this logic has all been moved to src/internal/syscall.h
with the arch-specific parts in arch/$(ARCH)/syscall_arch.h, and the
amount of arch-specific stuff has been reduced to a minimum.

changes still need to be reviewed/double-checked. minimal testing on
i386 and mips has already been performed.

1 files changed, 136 insertions, 0 deletions

diff --git a/arch/i386/syscall_arch.h b/arch/i386/syscall_arch.h
new file mode 100644
index 00000000..dc9ad147
--- /dev/null
+++ b/arch/i386/syscall_arch.h
@@ -0,0 +1,136 @@
+#define __SYSCALL_LL_E(x) \
+((union { long long ll; long l[2]; }){ .ll = x }).l[0], \
+((union { long long ll; long l[2]; }){ .ll = x }).l[1]
+#define __SYSCALL_LL_O(x) __SYSCALL_LL_E((x))
+
+#define __SYSCALL_SSLEN 8
+
+static inline long __syscall0(long n)
+{
+	unsigned long __ret;
+	__asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(n) : "memory");
+	return __ret;
+}
+
+#ifndef __PIC__
+
+static inline long __syscall1(long n, long a1)
+{
+	unsigned long __ret;
+	__asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(n), "b"(a1) : "memory");
+	return __ret;
+}
+
+static inline long __syscall2(long n, long a1, long a2)
+{
+	unsigned long __ret;
+	__asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(n), "b"(a1), "c"(a2) : "memory");
+	return __ret;
+}
+
+static inline long __syscall3(long n, long a1, long a2, long a3)
+{
+	unsigned long __ret;
+	__asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3) : "memory");
+	return __ret;
+}
+
+static inline long __syscall4(long n, long a1, long a2, long a3, long a4)
+{
+	unsigned long __ret;
+	__asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3), "S"(a4) : "memory");
+	return __ret;
+}
+
+static inline long __syscall5(long n, long a1, long a2, long a3, long a4, long a5)
+{
+	unsigned long __ret;
+	__asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3), "S"(a4), "D"(a5) : "memory");
+	return __ret;
+}
+
+static inline long __syscall6(long n, long a1, long a2, long a3, long a4, long a5, long a6)
+{
+	unsigned long __ret;
+	__asm__ __volatile__ ("pushl %7 ; pushl %%ebp ; mov 4(%%esp),%%ebp ; int $128 ; popl %%ebp ; popl %%ecx"
+		: "=a"(__ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3), "S"(a4), "D"(a5), "g"(a6) : "memory");
+	return __ret;
+}
+
+#else
+
+static inline long __syscall1(long n, long a1)
+{
+	unsigned long __ret;
+	__asm__ __volatile__ ("xchg %2,%%ebx ; int $128 ; xchg %2,%%ebx"
+		: "=a"(__ret) : "a"(n), "d"(a1) : "memory");
+	return __ret;
+}
+
+static inline long __syscall2(long n, long a1, long a2)
+{
+	unsigned long __ret;
+	__asm__ __volatile__ ("xchg %2,%%ebx ; int $128 ; xchg %2,%%ebx"
+		: "=a"(__ret) : "a"(n), "d"(a1), "c"(a2) : "memory");
+	return __ret;
+}
+
+static inline long __syscall3(long n, long a1, long a2, long a3)
+{
+	unsigned long __ret;
+	__asm__ __volatile__ ("xchg %2,%%ebx ; int $128 ; xchg %2,%%ebx"
+		: "=a"(__ret) : "a"(n), "S"(a1), "c"(a2), "d"(a3) : "memory");
+	return __ret;
+}
+
+static inline long __syscall4(long n, long a1, long a2, long a3, long a4)
+{
+	unsigned long __ret;
+	__asm__ __volatile__ ("xchg %2,%%ebx ; int $128 ; xchg %2,%%ebx"
+		: "=a"(__ret) : "a"(n), "D"(a1), "c"(a2), "d"(a3), "S"(a4) : "memory");
+	return __ret;
+}
+
+#if 0
+static inline long __syscall5(long n, long a1, long a2, long a3, long a4, long a5)
+{
+	unsigned long __ret;
+	__asm__ __volatile__ ("pushl %2 ; pushl %%ebx ; mov 4(%%esp),%%ebx ; int $128 ; popl %%ebx ; popl %%ecx"
+		: "=a"(__ret) : "a"(n), "g"(a1), "c"(a2), "d"(a3), "S"(a4), "D"(a5) : "memory");
+	return __ret;
+}
+#else
+static inline long __syscall5(long n, long a1, long a2, long a3, long a4, long a5)
+{
+	return (__syscall)(n, a1, a2, a3, a4, a5);
+}
+#endif
+
+static inline long __syscall6(long n, long a1, long a2, long a3, long a4, long a5, long a6)
+{
+	return (__syscall)(n, a1, a2, a3, a4, a5, a6);
+}
+
+#endif
+
+
+#define __SC_socket      1
+#define __SC_bind        2
+#define __SC_connect     3
+#define __SC_listen      4
+#define __SC_accept      5
+#define __SC_getsockname 6
+#define __SC_getpeername 7
+#define __SC_socketpair  8
+#define __SC_send        9
+#define __SC_recv        10
+#define __SC_sendto      11
+#define __SC_recvfrom    12
+#define __SC_shutdown    13
+#define __SC_setsockopt  14
+#define __SC_getsockopt  15
+#define __SC_sendmsg     16
+#define __SC_recvmsg     17
+#define __SC_accept4     18
+#define __SC_recvmmsg    19
+#define __SC_sendmmsg    20