1 files changed, 59 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/metag/sysdep.h b/libc/sysdeps/linux/metag/sysdep.h
new file mode 100644
index 000000000..a12f393ce
--- /dev/null
+++ b/libc/sysdeps/linux/metag/sysdep.h
@@ -0,0 +1,59 @@
+/*
+ * Assembler macros for Meta.
+ *
+ * Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <common/sysdep.h>
+
+#include <features.h>
+#include <libc-internal.h>
+
+#ifdef	__ASSEMBLER__
+
+#ifdef SHARED
+#define PLTJMP(_x)	_x##@PLT
+#else
+#define PLTJMP(_x)	_x
+#endif
+
+#undef	PSEUDO_END
+#define	PSEUDO_END(name)						\
+  SYSCALL_ERROR_HANDLER							\
+  END (name)
+
+#if defined NOT_IN_libc
+# define SYSCALL_ERROR __local_syscall_error
+# ifdef RTLD_PRIVATE_ERRNO
+#  define SYSCALL_ERROR_HANDLER					\
+__local_syscall_error:						\
+       NEG	D0Re0, D0Re0;					\
+       ADDT	D1Re0, CPC1, #HI(_rtld_errno);			\
+       ADD	D1Re0, D1Re0, #LO(_rtld_errno) + 4;		\
+       SETD	[D1Re0], D0Re0;					\
+       NEG	D0Re0, #0x1;					\
+       MOV	PC, D1RtP;
+# else
+#  define SYSCALL_ERROR_HANDLER					\
+__local_syscall_error:						\
+	MOV	D1Re0, D1RtP;					\
+	SETL	[A0StP++], D0Re0, D1Re0;			\
+	CALLR	D1RtP, PLTJMP(___errno_location);		\
+	GETD	D1Re0, [A0StP+#-8];				\
+	NEG	D1Re0, D1Re0;					\
+	SETD	[D0Re0], D1Re0;					\
+	NEG	D0Re0, #0x1;					\
+	GETD	D1RtP, [A0StP+#-4];				\
+	SUB	A0StP, A0StP, #0x8;				\
+	MOV	PC, D1RtP;
+# endif
+#else
+# define SYSCALL_ERROR_HANDLER	/* Nothing here; code in sysdep.S is used.  */
+# define SYSCALL_ERROR ___syscall_error
+#endif
+
+#endif /* __ASSEMBLER __*/
+
+/* Pointer mangling is not yet supported for META.  */
+#define PTR_MANGLE(var) (void) (var)
+#define PTR_DEMANGLE(var) (void) (var)