Move mips from ports to libc.

I've moved the MIPS port from ports to the main sysdeps hierarchy.
Beyond the README update, the move of the files was simply

git mv ports/sysdeps/mips sysdeps/mips
git mv ports/sysdeps/unix/mips sysdeps/unix/mips
git mv ports/sysdeps/unix/sysv/linux/mips sysdeps/unix/sysv/linux/mips

and in addition to the ChangeLog entries here, I put a note at the top
of ports/ChangeLog.mips similar to those in other files.

Tested that disassembly of installed shared libraries for mips is the
same before and after this patch (except for ld.so where paths in
assertions are involved, as for arm).

	* sysdeps/mips: Move directory from ports/sysdeps/mips.
	* sysdeps/unix/mips: Move directory from ports/sysdeps/unix/mips.
	* sysdeps/unix/sysv/linux/mips: Move directory from
	ports/sysdeps/unix/sysv/linux/mips.
	* README: Update listing for mips-*-linux-gnu and
	mips64-*-linux-gnu.

	* sysdeps/mips: Move directory to ../sysdeps/mips.
	* sysdeps/unix/mips: Move directory to ../sysdeps/unix/mips.
	* sysdeps/unix/sysv/linux/mips: Move directory to
	../sysdeps/unix/sysv/linux/mips.

1 files changed, 123 insertions, 0 deletions

diff --git a/sysdeps/mips/tls-macros.h b/sysdeps/mips/tls-macros.h
new file mode 100644
index 0000000000..3e87e42ea1
--- /dev/null
+++ b/sysdeps/mips/tls-macros.h
@@ -0,0 +1,123 @@
+/* Macros to support TLS testing in times of missing compiler support.  */
+
+#include <sys/cdefs.h>
+#include <sys/asm.h>
+
+#define __STRING2(X) __STRING(X)
+#define ADDU __STRING2(PTR_ADDU)
+#define ADDIU __STRING2(PTR_ADDIU)
+#define LW __STRING2(PTR_L)
+
+/* Load the GOT pointer, which may not be in $28 in a non-PIC
+   (abicalls pic0) function.  */
+#ifndef __PIC__
+# if _MIPS_SIM != _ABI64
+#  ifndef __mips16
+#   define LOAD_GP "move %[tmp], $28\n\tla $28, __gnu_local_gp\n\t"
+#  else
+#   define LOAD_GP					\
+           "li %[tmp], %%hi(__gnu_local_gp)\n\t"	\
+           "sll %[tmp], 16\n\t"				\
+           "addiu %[tmp], %%lo(__gnu_local_gp)\n\t"
+#  endif
+# else
+#  define LOAD_GP "move %[tmp], $28\n\tdla $28, __gnu_local_gp\n\t"
+# endif
+# define UNLOAD_GP "\n\tmove $28, %[tmp]"
+#else
+/* MIPS16 (re)creates the GP value using PC-relative instructions.  */
+# ifdef __mips16
+#  define LOAD_GP					\
+           "li %[tmp], %%hi(_gp_disp)\n\t"		\
+           "addiu %0, $pc, %%lo(_gp_disp)\n\t"		\
+           "sll %[tmp], 16\n\t"				\
+           "addu %[tmp], %0\n\t"
+# else
+#  define LOAD_GP
+# endif
+# define UNLOAD_GP
+#endif
+
+#ifndef __mips16
+# define TLS_GD(x)					\
+  ({ void *__result, *__tmp;				\
+     extern void *__tls_get_addr (void *);		\
+     asm (LOAD_GP ADDIU " %0, $28, %%tlsgd(" #x ")"	\
+	  UNLOAD_GP					\
+	  : "=r" (__result), [tmp] "=&r" (__tmp));	\
+     (int *)__tls_get_addr (__result); })
+# define TLS_LD(x)					\
+  ({ void *__result, *__tmp;				\
+     extern void *__tls_get_addr (void *);		\
+     asm (LOAD_GP ADDIU " %0, $28, %%tlsldm(" #x ")"	\
+	  UNLOAD_GP					\
+	  : "=r" (__result), [tmp] "=&r" (__tmp));	\
+     __result = __tls_get_addr (__result);		\
+     asm ("lui $3,%%dtprel_hi(" #x ")\n\t"		\
+	  "addiu $3,$3,%%dtprel_lo(" #x ")\n\t"		\
+	  ADDU " %0,%0,$3"				\
+	  : "+r" (__result) : : "$3");			\
+     __result; })
+# define TLS_IE(x)					\
+  ({ void *__result, *__tmp;				\
+     asm (".set push\n\t.set mips32r2\n\t"		\
+	  "rdhwr\t%0,$29\n\t.set pop"			\
+	  : "=v" (__result));				\
+     asm (LOAD_GP LW " $3,%%gottprel(" #x ")($28)\n\t"	\
+	  ADDU " %0,%0,$3"				\
+	  UNLOAD_GP					\
+	  : "+r" (__result), [tmp] "=&r" (__tmp)	\
+	  : : "$3");					\
+     __result; })
+# define TLS_LE(x)					\
+  ({ void *__result;					\
+     asm (".set push\n\t.set mips32r2\n\t"		\
+	  "rdhwr\t%0,$29\n\t.set pop"			\
+	  : "=v" (__result));				\
+     asm ("lui $3,%%tprel_hi(" #x ")\n\t"		\
+	  "addiu $3,$3,%%tprel_lo(" #x ")\n\t"		\
+	  ADDU " %0,%0,$3"				\
+	  : "+r" (__result) : : "$3");			\
+     __result; })
+
+#else /* __mips16 */
+/* MIPS16 version.  */
+# define TLS_GD(x)					\
+  ({ void *__result, *__tmp;				\
+     extern void *__tls_get_addr (void *);		\
+     asm (LOAD_GP ADDIU " %1, %%tlsgd(" #x ")"		\
+	  "\n\tmove %0, %1"				\
+	  : "=d" (__result), [tmp] "=&d" (__tmp));	\
+     (int *) __tls_get_addr (__result); })
+# define TLS_LD(x)					\
+  ({ void *__result, *__tmp;				\
+     extern void *__tls_get_addr (void *);		\
+     asm (LOAD_GP ADDIU " %1, %%tlsldm(" #x ")"		\
+	  "\n\tmove %0, %1"				\
+	  : "=d" (__result), [tmp] "=&d" (__tmp));	\
+     __result = __tls_get_addr (__result);		\
+     asm ("li $3,%%dtprel_hi(" #x ")\n\t"		\
+	  "sll $3,16\n\t"				\
+	  "addiu $3,%%dtprel_lo(" #x ")\n\t"		\
+	  ADDU " %0,%0,$3"				\
+	  : "+d" (__result) : : "$3");			\
+     __result; })
+# define TLS_IE(x)					\
+  ({ void *__result, *__tmp, *__tp;			\
+     __tp = __builtin_thread_pointer ();		\
+     asm (LOAD_GP LW " $3,%%gottprel(" #x ")(%1)\n\t"	\
+	  ADDU " %0,%[tp],$3"				\
+	  : "=&d" (__result), [tmp] "=&d" (__tmp)	\
+	  : [tp] "d" (__tp) : "$3");			\
+     __result; })
+# define TLS_LE(x)					\
+  ({ void *__result, *__tp;				\
+     __tp = __builtin_thread_pointer ();		\
+     asm ("li $3,%%tprel_hi(" #x ")\n\t"		\
+	  "sll $3,16\n\t"				\
+	  "addiu $3,%%tprel_lo(" #x ")\n\t"		\
+	  ADDU " %0,%[tp],$3"				\
+	  : "=d" (__result) : [tp] "d" (__tp) : "$3");	\
+     __result; })
+
+#endif /* __mips16 */