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.

2 files changed, 136 insertions, 286 deletions

diff --git a/arch/i386/bits/syscall.h b/arch/i386/bits/syscall.h
index c36d81fa..0bedf3f3 100644
--- a/arch/i386/bits/syscall.h
+++ b/arch/i386/bits/syscall.h
@@ -1,145 +1,3 @@
-#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
-
-#define __socketcall(nm,a,b,c,d,e,f) syscall(SYS_socketcall, __SC_##nm, \
-    ((long [6]){ (long)a, (long)b, (long)c, (long)d, (long)e, (long)f }))
-#define __socketcall_cp(nm,a,b,c,d,e,f) syscall_cp(SYS_socketcall, __SC_##nm, \
-    ((long [6]){ (long)a, (long)b, (long)c, (long)d, (long)e, (long)f }))
-
 #define __NR_restart_syscall      0
 #define __NR_exit		  1
 #define __NR_fork		  2
@@ -485,78 +343,6 @@ static __inline long __syscall6(long __n, long __a1, long __a2, long __a3, long
 #define __NR_process_vm_readv	347
 #define __NR_process_vm_writev	348
 
-/* fixup legacy 16-bit junk */
-#undef __NR_lchown
-#undef __NR_getuid
-#undef __NR_getgid
-#undef __NR_geteuid
-#undef __NR_getegid
-#undef __NR_setreuid
-#undef __NR_setregid
-#undef __NR_getgroups
-#undef __NR_setgroups
-#undef __NR_fchown
-#undef __NR_setresuid
-#undef __NR_getresuid
-#undef __NR_setresgid
-#undef __NR_getresgid
-#undef __NR_chown
-#undef __NR_setuid
-#undef __NR_setgid
-#undef __NR_setfsuid
-#undef __NR_setfsgid
-#define __NR_lchown __NR_lchown32
-#define __NR_getuid __NR_getuid32
-#define __NR_getgid __NR_getgid32
-#define __NR_geteuid __NR_geteuid32
-#define __NR_getegid __NR_getegid32
-#define __NR_setreuid __NR_setreuid32
-#define __NR_setregid __NR_setregid32
-#define __NR_getgroups __NR_getgroups32
-#define __NR_setgroups __NR_setgroups32
-#define __NR_fchown __NR_fchown32
-#define __NR_setresuid __NR_setresuid32
-#define __NR_getresuid __NR_getresuid32
-#define __NR_setresgid __NR_setresgid32
-#define __NR_getresgid __NR_getresgid32
-#define __NR_chown __NR_chown32
-#define __NR_setuid __NR_setuid32
-#define __NR_setgid __NR_setgid32
-#define __NR_setfsuid __NR_setfsuid32
-#define __NR_setfsgid __NR_setfsgid32
-
-
-/* fixup legacy 32-bit-vs-lfs64 junk */
-#undef __NR_fcntl
-#undef __NR_getdents
-#undef __NR_ftruncate
-#undef __NR_truncate
-#undef __NR_stat
-#undef __NR_fstat
-#undef __NR_lstat
-#undef __NR_statfs
-#undef __NR_fstatfs
-#define __NR_fcntl __NR_fcntl64
-#define __NR_getdents __NR_getdents64
-#define __NR_ftruncate __NR_ftruncate64
-#define __NR_truncate __NR_truncate64
-#define __NR_stat __NR_stat64
-#define __NR_fstat __NR_fstat64
-#define __NR_lstat __NR_lstat64
-#define __NR_statfs __NR_statfs64
-#define __NR_fstatfs __NR_fstatfs64
-#define __NR_fstatat __NR_fstatat64
-#define __NR_pread __NR_pread64
-#define __NR_pwrite __NR_pwrite64
-
-#define __NR_fadvise __NR_fadvise64_64
-
-#undef __NR_getrlimit
-#define __NR_getrlimit __NR_ugetrlimit
-
-#undef __NR_select
-#define __NR_select __NR__newselect
-
 
 /* Repeated with SYS_ prefix */
 
@@ -904,75 +690,3 @@ static __inline long __syscall6(long __n, long __a1, long __a2, long __a3, long
 #define SYS_setns		346
 #define SYS_process_vm_readv	347
 #define SYS_process_vm_writev	348
-
-/* fixup legacy 16-bit junk */
-#undef SYS_lchown
-#undef SYS_getuid
-#undef SYS_getgid
-#undef SYS_geteuid
-#undef SYS_getegid
-#undef SYS_setreuid
-#undef SYS_setregid
-#undef SYS_getgroups
-#undef SYS_setgroups
-#undef SYS_fchown
-#undef SYS_setresuid
-#undef SYS_getresuid
-#undef SYS_setresgid
-#undef SYS_getresgid
-#undef SYS_chown
-#undef SYS_setuid
-#undef SYS_setgid
-#undef SYS_setfsuid
-#undef SYS_setfsgid
-#define SYS_lchown SYS_lchown32
-#define SYS_getuid SYS_getuid32
-#define SYS_getgid SYS_getgid32
-#define SYS_geteuid SYS_geteuid32
-#define SYS_getegid SYS_getegid32
-#define SYS_setreuid SYS_setreuid32
-#define SYS_setregid SYS_setregid32
-#define SYS_getgroups SYS_getgroups32
-#define SYS_setgroups SYS_setgroups32
-#define SYS_fchown SYS_fchown32
-#define SYS_setresuid SYS_setresuid32
-#define SYS_getresuid SYS_getresuid32
-#define SYS_setresgid SYS_setresgid32
-#define SYS_getresgid SYS_getresgid32
-#define SYS_chown SYS_chown32
-#define SYS_setuid SYS_setuid32
-#define SYS_setgid SYS_setgid32
-#define SYS_setfsuid SYS_setfsuid32
-#define SYS_setfsgid SYS_setfsgid32
-
-
-/* fixup legacy 32-bit-vs-lfs64 junk */
-#undef SYS_fcntl
-#undef SYS_getdents
-#undef SYS_ftruncate
-#undef SYS_truncate
-#undef SYS_stat
-#undef SYS_fstat
-#undef SYS_lstat
-#undef SYS_statfs
-#undef SYS_fstatfs
-#define SYS_fcntl SYS_fcntl64
-#define SYS_getdents SYS_getdents64
-#define SYS_ftruncate SYS_ftruncate64
-#define SYS_truncate SYS_truncate64
-#define SYS_stat SYS_stat64
-#define SYS_fstat SYS_fstat64
-#define SYS_lstat SYS_lstat64
-#define SYS_statfs SYS_statfs64
-#define SYS_fstatfs SYS_fstatfs64
-#define SYS_fstatat SYS_fstatat64
-#define SYS_pread SYS_pread64
-#define SYS_pwrite SYS_pwrite64
-
-#define SYS_fadvise SYS_fadvise64_64
-
-#undef SYS_getrlimit
-#define SYS_getrlimit SYS_ugetrlimit
-
-#undef SYS_select
-#define SYS_select SYS__newselect
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