feat: refine symbolic link support.

[lunaix-os.git] / lunaix-os / includes / lunaix / syscall.h

diff --git a/lunaix-os/includes/lunaix/syscall.h b/lunaix-os/includes/lunaix/syscall.h
index d93358425a51861ffad05d868ce0b19c13bd93f9..a512bd7b8a48cb21aafd6bd3d48c59dbbca54534 100644 (file)
--- a/lunaix-os/includes/lunaix/syscall.h
+++ b/lunaix-os/includes/lunaix/syscall.h
@@ -3,60 +3,165 @@
 
 #include <arch/x86/vectors.h>
 
 
 #include <arch/x86/vectors.h>
 

-#define __SYSCALL_fork    0x1
-#define __SYSCALL_yield   0x2
-#define __SYSCALL_exit    0x3
-#define __SYSCALL_sbrk    0x4
-#define __SYSCALL_brk     0x5
+#define __SYSCALL_fork 1
+#define __SYSCALL_yield 2
+#define __SYSCALL_sbrk 3
+#define __SYSCALL_brk 4
+#define __SYSCALL_getpid 5
+#define __SYSCALL_getppid 6
+#define __SYSCALL_sleep 7
+#define __SYSCALL__exit 8
+#define __SYSCALL_wait 9
+#define __SYSCALL_waitpid 10

 
 

-#define __SYSCALL_MAX     0x100
+#define __SYSCALL_sigreturn 11
+#define __SYSCALL_sigprocmask 12
+#define __SYSCALL_signal 13
+#define __SYSCALL_pause 14
+#define __SYSCALL_kill 15
+#define __SYSCALL_alarm 16
+#define __SYSCALL_sigpending 17
+#define __SYSCALL_sigsuspend 18
+#define __SYSCALL_open 19
+#define __SYSCALL_close 20
+
+#define __SYSCALL_read 21
+#define __SYSCALL_write 22
+#define __SYSCALL_sys_readdir 23
+#define __SYSCALL_mkdir 24
+#define __SYSCALL_lseek 25
+#define __SYSCALL_geterrno 26
+#define __SYSCALL_readlink 27
+#define __SYSCALL_readlinkat 28
+#define __SYSCALL_rmdir 29
+
+#define __SYSCALL_unlink 30
+#define __SYSCALL_unlinkat 31
+#define __SYSCALL_link 32
+#define __SYSCALL_fsync 33
+#define __SYSCALL_dup 34
+#define __SYSCALL_dup2 35
+#define __SYSCALL_realpathat 36
+#define __SYSCALL_symlink 37
+#define __SYSCALL_chdir 38
+#define __SYSCALL_fchdir 39
+#define __SYSCALL_getcwd 40
+#define __SYSCALL_rename 41
+#define __SYSCALL_mount 42
+#define __SYSCALL_unmount 43
+#define __SYSCALL_getxattr 44
+#define __SYSCALL_setxattr 45
+#define __SYSCALL_fgetxattr 46
+#define __SYSCALL_fsetxattr 47
+
+#define __SYSCALL_ioctl 48
+#define __SYSCALL_getpgid 49
+#define __SYSCALL_setpgid 50
+
+#define __SYSCALL_syslog 51
+
+#define __SYSCALL_sys_mmap 52
+#define __SYSCALL_munmap 53
+
+#define __SYSCALL_execve 54
+
+#define __SYSCALL_MAX 0x100

 
 #ifndef __ASM__
 
 #ifndef __ASM__

-void syscall_install();
-
-static void* syscall(unsigned int callcode) {
-    asm volatile(
-        "int %0"
-        ::"i"(LUNAIX_SYS_CALL), "D"(callcode)
-        :"eax"
-    );
-}
-
-#define ___DOINT33(callcode, rettype)\
-    int v;    \
-    asm volatile (  \
-        "int %1\n"    \
-        :"=a"(v)    \
-        :"i"(LUNAIX_SYS_CALL), "a"(callcode));  \
-    return (rettype)v;     \
-
-#define __LXSYSCALL(rettype, name) \
-    rettype name () { \
-        ___DOINT33(__SYSCALL_##name, rettype) \
+
+#define SYSCALL_ESTATUS(errno) -((errno) != 0)
+
+void
+syscall_install();
+
+#define asmlinkage __attribute__((regparm(0)))
+
+#define __PARAM_MAP1(t1, p1) t1 p1
+#define __PARAM_MAP2(t1, p1, ...) t1 p1, __PARAM_MAP1(__VA_ARGS__)
+#define __PARAM_MAP3(t1, p1, ...) t1 p1, __PARAM_MAP2(__VA_ARGS__)
+#define __PARAM_MAP4(t1, p1, ...) t1 p1, __PARAM_MAP3(__VA_ARGS__)
+#define __PARAM_MAP5(t1, p1, ...) t1 p1, __PARAM_MAP4(__VA_ARGS__)
+#define __PARAM_MAP6(t1, p1, ...) t1 p1, __PARAM_MAP5(__VA_ARGS__)
+
+#define __DEFINE_LXSYSCALL(rettype, name) asmlinkage rettype __lxsys_##name()
+
+#define __DEFINE_LXSYSCALL1(rettype, name, t1, p1)                             \
+    asmlinkage rettype __lxsys_##name(__PARAM_MAP1(t1, p1))
+
+#define __DEFINE_LXSYSCALL2(rettype, name, t1, p1, t2, p2)                     \
+    asmlinkage rettype __lxsys_##name(__PARAM_MAP2(t1, p1, t2, p2))
+
+#define __DEFINE_LXSYSCALL3(rettype, name, t1, p1, t2, p2, t3, p3)             \
+    asmlinkage rettype __lxsys_##name(__PARAM_MAP3(t1, p1, t2, p2, t3, p3))
+
+#define __DEFINE_LXSYSCALL4(rettype, name, t1, p1, t2, p2, t3, p3, t4, p4)     \
+    asmlinkage rettype __lxsys_##name(                                         \
+      __PARAM_MAP4(t1, p1, t2, p2, t3, p3, t4, p4))
+
+#define __DEFINE_LXSYSCALL5(                                                   \
+  rettype, name, t1, p1, t2, p2, t3, p3, t4, p4, t5, p5)                       \
+    asmlinkage rettype __lxsys_##name(                                         \
+      __PARAM_MAP5(t1, p1, t2, p2, t3, p3, t4, p4, t5, p5))
+
+#define __SYSCALL_INTERRUPTIBLE(code)                                          \
+    asm("sti");                                                                \
+    { code };                                                                  \
+    asm("cli");
+
+#define ___DOINT33(callcode, rettype)                                          \
+    int v;                                                                     \
+    asm volatile("int %1\n" : "=a"(v) : "i"(LUNAIX_SYS_CALL), "a"(callcode));  \
+    return (rettype)v;
+
+#define __LXSYSCALL(rettype, name)                                             \
+    rettype name()                                                             \
+    {                                                                          \
+        ___DOINT33(__SYSCALL_##name, rettype)                                  \
+    }
+
+#define __LXSYSCALL1(rettype, name, t1, p1)                                    \
+    rettype name(__PARAM_MAP1(t1, p1))                                         \
+    {                                                                          \
+        asm("" ::"b"(p1));                                                     \
+        ___DOINT33(__SYSCALL_##name, rettype)                                  \

     }
 
     }
 

-#define __LXSYSCALL1(rettype, name, t1, p1) \
-    rettype name (t1 p1) { \
-        asm (""::"b"(p1)); \
-        ___DOINT33(__SYSCALL_##name, rettype) \
+#define __LXSYSCALL2(rettype, name, t1, p1, t2, p2)                            \
+    rettype name(__PARAM_MAP2(t1, p1, t2, p2))                                 \
+    {                                                                          \
+        asm("\n" ::"b"(p1), "c"(p2));                                          \
+        ___DOINT33(__SYSCALL_##name, rettype)                                  \

     }
 
     }
 

-#define __LXSYSCALL2(rettype, name, t1, p1, t2, p2) \
-    rettype name (t1 p1, t2 p2) { \
-        asm ("\n"::"b"(p1), "c"(p2)); \
-        ___DOINT33(__SYSCALL_##name, rettype) \
+#define __LXSYSCALL3(rettype, name, t1, p1, t2, p2, t3, p3)                    \
+    rettype name(__PARAM_MAP3(t1, p1, t2, p2, t3, p3))                         \
+    {                                                                          \
+        asm("\n" ::"b"(p1), "c"(p2), "d"(p3));                                 \
+        ___DOINT33(__SYSCALL_##name, rettype)                                  \

     }
 
     }
 

-#define __LXSYSCALL3(rettype, name, t1, p1, t2, p2, t3, p3) \
-    rettype name (t1 p1, t2 p2, t3 p3) { \
-        asm ("\n"::"b"(p1), "c"(p2), "d"(p3)); \
-        ___DOINT33(__SYSCALL_##name, rettype) \
+#define __LXSYSCALL4(rettype, name, t1, p1, t2, p2, t3, p3, t4, p4)            \
+    rettype name(__PARAM_MAP4(t1, p1, t2, p2, t3, p3, t4, p4))                 \
+    {                                                                          \
+        asm("\n" ::"b"(p1), "c"(p2), "d"(p3), "D"(p4));                        \
+        ___DOINT33(__SYSCALL_##name, rettype)                                  \

     }
 
     }
 

-#define __LXSYSCALL4(rettype, name, t1, p1, t2, p2, t3, p3, t4, p4) \
-    rettype name (t1 p1, t2 p2, t3 p3, t4 p4) { \
-        asm ("\n"::"b"(p1), "c"(p2), "d"(p3), "D"(p4)); \
-        ___DOINT33(__SYSCALL_##name, rettype) \
+#define __LXSYSCALL5(rettype, name, t1, p1, t2, p2, t3, p3, t4, p4, t5, p5)    \
+    rettype name(__PARAM_MAP5(t1, p1, t2, p2, t3, p3, t4, p4, t5, p5))         \
+    {                                                                          \
+        asm("" ::"r"(p5), "b"(p1), "c"(p2), "d"(p3), "D"(p4), "S"(p5));        \
+        ___DOINT33(__SYSCALL_##name, rettype)                                  \

     }
     }

+
+#define __LXSYSCALL2_VARG(rettype, name, t1, p1, t2, p2)                       \
+    __attribute__((noinline)) rettype name(__PARAM_MAP2(t1, p1, t2, p2), ...)  \
+    {                                                                          \
+        /* No inlining! This depends on the call frame assumption */           \
+        void* _last = (void*)&p2 + sizeof(void*);                              \
+        asm("\n" ::"b"(p1), "c"(p2), "d"(_last));                              \
+        ___DOINT33(__SYSCALL_##name, rettype)                                  \
+    }
+

 #endif
 #endif /* __LUNAIX_SYSCALL_H */
 #endif
 #endif /* __LUNAIX_SYSCALL_H */