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Diffstat (limited to 'libc/sysdeps/linux/sh/bits/syscalls.h')
-rw-r--r--libc/sysdeps/linux/sh/bits/syscalls.h106
1 files changed, 104 insertions, 2 deletions
diff --git a/libc/sysdeps/linux/sh/bits/syscalls.h b/libc/sysdeps/linux/sh/bits/syscalls.h
index 31db04f84..9759f0b4a 100644
--- a/libc/sysdeps/linux/sh/bits/syscalls.h
+++ b/libc/sysdeps/linux/sh/bits/syscalls.h
@@ -1,4 +1,106 @@
+/* This file is based on the asm/unistd.h kernel header file.
+ * Including asm/unistd.h is hereby officially forbidden.
+ * Don't do it. It is bad for you. */
+
+#include <features.h>
+
+/* FIXME: perhaps sh needs separate PIC syscalls? */
+
+
+#define __syscall_return(type, res) \
+do { \
+ if ((unsigned long)(res) >= (unsigned long)(-125)) { \
+ /* Avoid using "res" which is declared to be in register r0; \
+ errno might expand to a function call and clobber it. */ \
+ int __err = -(res); \
+ errno = __err; \
+ res = -1; \
+ } \
+ return (type) (res); \
+} while (0)
+
+/* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
+#define _syscall0(type,name) \
+type name(void) \
+{ \
+register long __sc0 __asm__ ("r3") = __NR_##name; \
+__asm__ __volatile__ ("trapa #0x10" \
+ : "=z" (__sc0) \
+ : "0" (__sc0) \
+ : "memory" ); \
+__syscall_return(type,__sc0); \
+}
+
+#define _syscall1(type,name,type1,arg1) \
+type name(type1 arg1) \
+{ \
+register long __sc0 __asm__ ("r3") = __NR_##name; \
+register long __sc4 __asm__ ("r4") = (long) arg1; \
+__asm__ __volatile__ ("trapa #0x11" \
+ : "=z" (__sc0) \
+ : "0" (__sc0), "r" (__sc4) \
+ : "memory"); \
+__syscall_return(type,__sc0); \
+}
+
+#define _syscall2(type,name,type1,arg1,type2,arg2) \
+type name(type1 arg1,type2 arg2) \
+{ \
+register long __sc0 __asm__ ("r3") = __NR_##name; \
+register long __sc4 __asm__ ("r4") = (long) arg1; \
+register long __sc5 __asm__ ("r5") = (long) arg2; \
+__asm__ __volatile__ ("trapa #0x12" \
+ : "=z" (__sc0) \
+ : "0" (__sc0), "r" (__sc4), "r" (__sc5) \
+ : "memory"); \
+__syscall_return(type,__sc0); \
+}
+
+#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
+type name(type1 arg1,type2 arg2,type3 arg3) \
+{ \
+register long __sc0 __asm__ ("r3") = __NR_##name; \
+register long __sc4 __asm__ ("r4") = (long) arg1; \
+register long __sc5 __asm__ ("r5") = (long) arg2; \
+register long __sc6 __asm__ ("r6") = (long) arg3; \
+__asm__ __volatile__ ("trapa #0x13" \
+ : "=z" (__sc0) \
+ : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6) \
+ : "memory"); \
+__syscall_return(type,__sc0); \
+}
+
+#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
+type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+{ \
+register long __sc0 __asm__ ("r3") = __NR_##name; \
+register long __sc4 __asm__ ("r4") = (long) arg1; \
+register long __sc5 __asm__ ("r5") = (long) arg2; \
+register long __sc6 __asm__ ("r6") = (long) arg3; \
+register long __sc7 __asm__ ("r7") = (long) arg4; \
+__asm__ __volatile__ ("trapa #0x14" \
+ : "=z" (__sc0) \
+ : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6), \
+ "r" (__sc7) \
+ : "memory" ); \
+__syscall_return(type,__sc0); \
+}
+
+#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
+type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
+{ \
+register long __sc3 __asm__ ("r3") = __NR_##name; \
+register long __sc4 __asm__ ("r4") = (long) arg1; \
+register long __sc5 __asm__ ("r5") = (long) arg2; \
+register long __sc6 __asm__ ("r6") = (long) arg3; \
+register long __sc7 __asm__ ("r7") = (long) arg4; \
+register long __sc0 __asm__ ("r0") = (long) arg5; \
+__asm__ __volatile__ ("trapa #0x15" \
+ : "=z" (__sc0) \
+ : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6), "r" (__sc7), \
+ "r" (__sc3) \
+ : "memory" ); \
+__syscall_return(type,__sc0); \
+}
-/* not much needed here unless you want some special */
-#include <asm/unistd.h>