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Diffstat (limited to 'libc/sysdeps/linux/c6x/bits/syscalls.h')
-rw-r--r--libc/sysdeps/linux/c6x/bits/syscalls.h183
1 files changed, 183 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/c6x/bits/syscalls.h b/libc/sysdeps/linux/c6x/bits/syscalls.h
new file mode 100644
index 000000000..56a1667c3
--- /dev/null
+++ b/libc/sysdeps/linux/c6x/bits/syscalls.h
@@ -0,0 +1,183 @@
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead."
+#endif
+
+#ifndef __ASSEMBLER__
+
+#include <errno.h>
+
+#define SYS_ify(syscall_name) (__NR_##syscall_name)
+
+#undef __SYSCALL_STRING
+# define __SYSCALL_STRING \
+ "swe\n\t" \
+ "nop\n\t"
+
+# define __SYSCALL_RES_CHECK (__res < -255 || __res >= 0)
+
+#define __SYSCALL_CLOBBERS "cc", "memory"
+
+#define __SYSCALL_RETURN(type) \
+ if (__SYSCALL_RES_CHECK) \
+ return (type) __res; \
+ __set_errno (-__res); \
+ return (type) -1;
+
+#ifndef NOT_IN_libc
+#define DEBUG_SYSCALL(name) { \
+ char d[64];\
+ write( 2, d, snprintf( d, 64, "syscall %d error %d\n", __NR_##name, _inline_sys_result)); \
+}
+#else
+#define DEBUG_SYSCALL(name) do{} while(0)
+#endif
+
+#undef INLINE_SYSCALL
+#define INLINE_SYSCALL(name, nr, args...) \
+ ({ unsigned int _inline_sys_result = INTERNAL_SYSCALL (name, , nr, args); \
+ if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (_inline_sys_result, ), 0)) \
+ { \
+ __set_errno (INTERNAL_SYSCALL_ERRNO (_inline_sys_result, )); \
+ _inline_sys_result = (unsigned int) -1; \
+ } \
+ (int) _inline_sys_result; })
+
+#undef INLINE_SYSCALL_NOERR
+#define INLINE_SYSCALL_NOERR(name, nr, args...) \
+ ({ unsigned int _inline_sys_result = INTERNAL_SYSCALL (name, , nr, args); \
+ (int) _inline_sys_result; })
+
+#undef INTERNAL_SYSCALL_DECL
+#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
+
+
+#define INTERNAL_SYSCALL( name, err, nr, args...) \
+ INTERNAL_SYSCALL_NCS( __NR_##name, err, nr, args )
+
+
+#define INTERNAL_SYSCALL_NCS(sys_num, err, nr, args...) \
+ ({ \
+ register long __A4 __asm__("A4"); \
+ register long __b0 __asm__("B0") = sys_num; \
+ LOAD_ARGS_##nr(args) \
+ __asm__ __volatile__(__SYSCALL_STRING \
+ : "=a" (__A4) \
+ : "b" (__b0) ASM_ARGS_##nr \
+ : __SYSCALL_CLOBBERS ); \
+ (int)__A4; \
+ })
+
+#undef INTERNAL_SYSCALL_ERROR_P
+#define INTERNAL_SYSCALL_ERROR_P(val, err) \
+ ((unsigned int) (val) >= 0xfffff001u)
+
+#undef INTERNAL_SYSCALL_ERRNO
+#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val))
+
+#if 0
+# define CALL_ERRNO_LOCATION "call __errno_location;"
+#define __CLONE_SYSCALL_STRING \
+ "ta 0x10;" \
+ "bcs 2f;" \
+ " sub %%o1, 1, %%o1;" \
+ "and %%A4, %%o1, %%A4;" \
+ "1:" \
+ ".subsection 2;" \
+ "2:" \
+ "save %%sp, -192, %%sp;" \
+ CALL_ERRNO_LOCATION \
+ " nop;" \
+ "st %%i0, [%%A4];" \
+ "ba 1b;" \
+ " restore %%g0, -1, %%A4;" \
+ ".previous;"
+
+#define INLINE_CLONE_SYSCALL(arg1,arg2,arg3,arg4,arg5) \
+({ \
+ register long __A4 __asm__ ("A4") = (long)(arg1); \
+ register long __B4 __asm__ ("B4") = (long)(arg2); \
+ register long __A6 __asm__ ("A6") = (long)(arg3); \
+ register long __B6 __asm__ ("B6") = (long)(arg4); \
+ register long __A8 __asm__ ("A8") = (long)(arg5); \
+ register long __g1 __asm__ ("g1") = __NR_clone; \
+ __asm __volatile (__CLONE_SYSCALL_STRING : \
+ "=r" (__g1), "=r" (__A4), "=r" (__B4) : \
+ "0" (__g1), "1" (__A4), "2" (__B4), \
+ "r" (__A6), "r" (__B6), "r" (__A8) : \
+ __SYSCALL_CLOBBERS); \
+ __A4; \
+})
+#endif
+
+#define LOAD_ARGS_0()
+#define ASM_ARGS_0
+#define LOAD_ARGS_1(A4) \
+ __A4 = (int)A4; \
+ LOAD_ARGS_0()
+#define ASM_ARGS_1 ASM_ARGS_0, "a" (__A4)
+#define LOAD_ARGS_2(A4, B4) \
+ register int __B4 __asm__ ("B4") = (int) (B4); \
+ LOAD_ARGS_1 (A4)
+#define ASM_ARGS_2 ASM_ARGS_1, "b" (__B4)
+#define LOAD_ARGS_3(A4, B4, A6) \
+ register int __A6 __asm__ ("A6") = (int) (A6); \
+ LOAD_ARGS_2 (A4, B4)
+#define ASM_ARGS_3 ASM_ARGS_2, "a" (__A6)
+#define LOAD_ARGS_4(A4, B4, A6, B6) \
+ register int __B6 __asm__ ("B6") = (int) (B6); \
+ LOAD_ARGS_3 (A4, B4, A6)
+#define ASM_ARGS_4 ASM_ARGS_3, "b" (__B6)
+#define LOAD_ARGS_5(A4, B4, A6, B6, A8) \
+ register int __A8 __asm__ ("A8") = (int) (A8); \
+ LOAD_ARGS_4 (A4, B4, A6, B6)
+#define ASM_ARGS_5 ASM_ARGS_4, "a" (__A8)
+#define LOAD_ARGS_6(A4, B4, A6, B6, A8, B8) \
+ register int __B8 __asm__ ("B8") = (int) (B8); \
+ LOAD_ARGS_5 (A4, B4, A6, B6, A8)
+#define ASM_ARGS_6 ASM_ARGS_5, "b" (__B8)
+
+#ifndef _syscall0
+
+#define C_DECL_ARGS_0() void
+#define C_DECL_ARGS_1(t, v) t v
+#define C_DECL_ARGS_2(t, v, args...) t v, C_DECL_ARGS_1(args)
+#define C_DECL_ARGS_3(t, v, args...) t v, C_DECL_ARGS_2(args)
+#define C_DECL_ARGS_4(t, v, args...) t v, C_DECL_ARGS_3(args)
+#define C_DECL_ARGS_5(t, v, args...) t v, C_DECL_ARGS_4(args)
+#define C_DECL_ARGS_6(t, v, args...) t v, C_DECL_ARGS_5(args)
+
+#define C_ARGS_0()
+#define C_ARGS_1(t, v) v
+#define C_ARGS_2(t, v, args...) v, C_ARGS_1(args)
+#define C_ARGS_3(t, v, args...) v, C_ARGS_2(args)
+#define C_ARGS_4(t, v, args...) v, C_ARGS_3(args)
+#define C_ARGS_5(t, v, args...) v, C_ARGS_4(args)
+#define C_ARGS_6(t, v, args...) v, C_ARGS_5(args)
+
+#define SYSCALL_FUNC(nargs, type, name, args...) \
+type name(C_DECL_ARGS_##nargs(args)) { \
+ return (type)INLINE_SYSCALL(name, nargs, C_ARGS_##nargs(args)); \
+}
+
+#define SYSCALL_NOERR_FUNC(nargs, type, name, args...) \
+type name(C_DECL_ARGS_##nargs(args)) { \
+ return (type)INLINE_SYSCALL_NOERR(name, nargs, C_ARGS_##nargs(args)); \
+}
+
+#define _syscall0(args...) SYSCALL_FUNC(0, args)
+#define _syscall_noerr0(args...) SYSCALL_NOERR_FUNC(0, args)
+#define _syscall1(args...) SYSCALL_FUNC(1, args)
+#define _syscall_noerr1(args...) SYSCALL_NOERR_FUNC(1, args)
+#define _syscall2(args...) SYSCALL_FUNC(2, args)
+#define _syscall3(args...) SYSCALL_FUNC(3, args)
+#define _syscall4(args...) SYSCALL_FUNC(4, args)
+#define _syscall5(args...) SYSCALL_FUNC(5, args)
+#define _syscall6(args...) SYSCALL_FUNC(6, args)
+
+#endif /* _syscall0 */
+
+#endif /* __ASSEMBLER__ */
+#endif /* _BITS_SYSCALLS_H */
+