Support to multi-threading and pthread interface (POSIX.1-2008) (#23)

[lunaix-os.git] / lunaix-os / usr / libc / arch / i386 / syscall.S

diff --git a/lunaix-os/usr/libc/arch/i386/syscall.S b/lunaix-os/usr/libc/arch/i386/syscall.S
new file mode 100644 (file)
index 0000000..83320ea
--- /dev/null
+++ b/lunaix-os/usr/libc/arch/i386/syscall.S
@@ -0,0 +1,50 @@
+#include <lunaix/syscallid.h>
+
+#define LUNAIX_SYSCALL 33
+#define regsize 4
+
+    .struct 8
+saved_registers:
+    .struct saved_registers + 5 * regsize
+id:
+    .struct id + regsize
+a1:
+    .struct a1 + regsize
+a2:
+    .struct a2 + regsize
+a3:
+    .struct a3 + regsize
+a4:
+    .struct a4 + regsize
+a5:
+
+.section .text
+    .type do_lunaix_syscall, @function
+    .global do_lunaix_syscall
+    do_lunaix_syscall:
+        push %ebp
+        movl %esp, %ebp
+
+        pushl %ebx
+        pushl %ecx
+        pushl %edx
+        pushl %edi
+        pushl %esi
+        
+        movl id(%esp), %eax
+        movl a1(%esp), %ebx
+        movl a2(%esp), %ecx
+        movl a3(%esp), %edx
+        movl a4(%esp), %edi
+        movl a5(%esp), %esi
+        
+        int $LUNAIX_SYSCALL
+
+        popl %esi
+        popl %edi
+        popl %edx
+        popl %ecx
+        popl %ebx
+
+        leave
+        ret
\ No newline at end of file