tile: add basic support for tilegx

This adds basic support for tile architecture.
Only static binaries, no ld.so or threading support.
Tested with qemu-tilegx only.

1 files changed, 96 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/tile/sys/ucontext.h b/libc/sysdeps/linux/tile/sys/ucontext.h
new file mode 100644
index 000000000..ed2c27b58
--- /dev/null
+++ b/libc/sysdeps/linux/tile/sys/ucontext.h
@@ -0,0 +1,96 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_UCONTEXT_H
+#define _SYS_UCONTEXT_H	1
+
+#include <features.h>
+#include <signal.h>
+#include <bits/sigcontext.h>
+
+#ifdef __USE_MISC
+# define __ctx(fld) fld
+#else
+# define __ctx(fld) __ ## fld
+#endif
+
+#ifdef __USE_MISC
+/* Get register type and register names. */
+# include <arch/abi.h>
+
+
+/* Type for general register.  */
+typedef uint_reg_t greg_t;
+
+/* Number of general registers.  Must agree with <asm/ptrace.h>. */
+# define NGREG	64
+
+/* Container for all general registers.  */
+typedef greg_t gregset_t[NGREG];
+#endif
+
+#ifdef __USE_GNU
+/* Names for interesting registers in the `gregset_t' array.  */
+enum
+{
+  /* ... r0 through r51 are just 0 through 51 ... */
+  REG_FP = TREG_FP,
+# define REG_FP		REG_FP
+  REG_TP = TREG_TP,
+# define REG_TP		REG_TP
+  REG_SP = TREG_SP,
+# define REG_SP		REG_SP
+  REG_LR = TREG_LR,
+# define REG_LR		REG_LR
+};
+#endif
+
+#define __need_int_reg_t
+#include <arch/abi.h>
+
+/* A machine context is exactly a sigcontext.  */
+typedef struct
+  {
+    __extension__ union
+      {
+	__uint_reg_t __ctx(gregs)[56];
+	__extension__ struct
+	  {
+	    __uint_reg_t __ctx(__gregs)[53];
+	    __uint_reg_t __ctx(tp);
+	    __uint_reg_t __ctx(sp);
+	    __uint_reg_t __ctx(lr);
+	  };
+      };
+    __uint_reg_t __ctx(pc);
+    __uint_reg_t __ctx(ics);
+    __uint_reg_t __ctx(faultnum);
+    __uint_reg_t __glibc_reserved1[5];
+  } mcontext_t;
+
+/* Userlevel context.  */
+typedef struct ucontext_t
+  {
+    unsigned long int __ctx(uc_flags);
+    struct ucontext_t *uc_link;
+    stack_t uc_stack;
+    mcontext_t uc_mcontext;
+    sigset_t uc_sigmask;
+  } ucontext_t;
+
+#undef __ctx
+
+#endif /* sys/ucontext.h */