Add C-SKY port

This patch add two abi combinations support for C-SKY ABIV2: soft-float
little endian, hard float little endian. C-SKY ABI manual and architecture
user guide are available from: https://github.com/c-sky/csky-doc

	* config.h.in (CSKYABI, CSKY_HARD_FLOAT): New Define.
	* scripts/build-many-glibcs.py: Add C-SKY targets.
	* sysdeps/csky/Implies: New file.
	* sysdeps/csky/Makefile: Likewise.
	* sysdeps/csky/abiv2/__longjmp.S: Likewise.
	* sysdeps/csky/abiv2/csky-mcount.S: Likewise.
	* sysdeps/csky/abiv2/dl-trampoline.S: Likewise.
	* sysdeps/csky/abiv2/memcmp.S: Likewise.
	* sysdeps/csky/abiv2/memcpy.S: Likewise.
	* sysdeps/csky/abiv2/memmove.S: Likewise.
	* sysdeps/csky/abiv2/memset.S: Likewise.
	* sysdeps/csky/abiv2/setjmp.S: Likewise.
	* sysdeps/csky/abiv2/start.S: Likewise.
	* sysdeps/csky/abiv2/strcmp.S: Likewise.
	* sysdeps/csky/abiv2/strcpy.S: Likewise.
	* sysdeps/csky/abiv2/strlen.S: Likewise.
	* sysdeps/csky/abiv2/tls-macros.h: Likewise.
	* sysdeps/csky/abort-instr.h: Likewise.
	* sysdeps/csky/atomic-machine.h: Likewise.
	* sysdeps/csky/bits/endian.h: Likewise.
	* sysdeps/csky/bits/fenv.h: Likewise.
	* sysdeps/csky/bits/link.h: Likewise.
	* sysdeps/csky/bits/setjmp.h: Likewise.
	* sysdeps/csky/bsd-_setjmp.S: Likewise.
	* sysdeps/csky/bsd-setjmp.S: Likewise.
	* sysdeps/csky/configure: Likewise.
	* sysdeps/csky/configure.ac: Likewise.
	* sysdeps/csky/dl-machine.h: Likewise.
	* sysdeps/csky/dl-procinfo.c: Likewise.
	* sysdeps/csky/dl-procinfo.h: Likewise.
	* sysdeps/csky/dl-sysdep.h: Likewise.
	* sysdeps/csky/dl-tls.h: Likewise.
	* sysdeps/csky/fpu/fclrexcpt.c: Likewise.
	* sysdeps/csky/fpu/fedisblxcpt.c: Likewise.
	* sysdeps/csky/fpu/feenablxcpt.c: Likewise.
	* sysdeps/csky/fpu/fegetenv.c: Likewise.
	* sysdeps/csky/fpu/fegetexcept.c: Likewise.
	* sysdeps/csky/fpu/fegetmode.c: Likewise.
	* sysdeps/csky/fpu/fegetround.c: Likewise.
	* sysdeps/csky/fpu/feholdexcpt.c: Likewise.
	* sysdeps/csky/fpu/fenv_libc.h: Likewise.
	* sysdeps/csky/fpu/fenv_private.h: Likewise.
	* sysdeps/csky/fpu/fesetenv.c: Likewise.
	* sysdeps/csky/fpu/fesetexcept.c: Likewise.
	* sysdeps/csky/fpu/fesetmode.c: Likewise.
	* sysdeps/csky/fpu/fesetround.c: Likewise.
	* sysdeps/csky/fpu/feupdateenv.c: Likewise.
	* sysdeps/csky/fpu/fgetexcptflg.c: Likewise.
	* sysdeps/csky/fpu/fix-fp-int-convert-overflow.h: Likewise.
	* sysdeps/csky/fpu/fraiseexcpt.c: Likewise.
	* sysdeps/csky/fpu/fsetexcptflg.c: Likewise.
	* sysdeps/csky/fpu/ftestexcept.c: Likewise.
	* sysdeps/csky/fpu/libm-test-ulps: Likewise.
	* sysdeps/csky/fpu/libm-test-ulps-name: Likewise.
	* sysdeps/csky/fpu_control.h: Likewise.
	* sysdeps/csky/gccframe.h: Likewise.
	* sysdeps/csky/jmpbuf-unwind.h: Likewise.
	* sysdeps/csky/ldsodefs.h: Likewise.
	* sysdeps/csky/libc-tls.c: Likewise.
	* sysdeps/csky/linkmap.h: Likewise.
	* sysdeps/csky/machine-gmon.h: Likewise.
	* sysdeps/csky/memusage.h: Likewise.
	* sysdeps/csky/nofpu/Implies: Likewise.
	* sysdeps/csky/nofpu/libm-test-ulps: Likewise.
	* sysdeps/csky/nofpu/libm-test-ulps-name: Likewise.
	* sysdeps/csky/nptl/Makefile: Likewise.
	* sysdeps/csky/nptl/bits/pthreadtypes-arch.h: Likewise.
	* sysdeps/csky/nptl/bits/semaphore.h: Likewise.
	* sysdeps/csky/nptl/pthread-offsets.h: Likewise.
	* sysdeps/csky/nptl/pthreaddef.h: Likewise.
	* sysdeps/csky/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/csky/nptl/tls.h: Likewise.
	* sysdeps/csky/preconfigure: Likewise.
	* sysdeps/csky/sfp-machine.h: Likewise.
	* sysdeps/csky/sotruss-lib.c: Likewise.
	* sysdeps/csky/stackinfo.h: Likewise.
	* sysdeps/csky/sysdep.h: Likewise.
	* sysdeps/csky/tininess.h: Likewise.
	* sysdeps/csky/tst-audit.h: Likewise.
	* sysdeps/unix/sysv/linux/csky/Implies: Likewise.
	* sysdeps/unix/sysv/linux/csky/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/csky/Versions: Likewise.
	* sysdeps/unix/sysv/linux/csky/abiv2/____longjmp_chk.S: Likewise.
	* sysdeps/unix/sysv/linux/csky/abiv2/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/csky/abiv2/getcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/csky/abiv2/setcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/csky/abiv2/swapcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/csky/abiv2/syscall.S: Likewise.
	* sysdeps/unix/sysv/linux/csky/abiv2/sysdep.S: Likewise.
	* sysdeps/unix/sysv/linux/csky/abiv2/ucontext_i.sym: Likewise.
	* sysdeps/unix/sysv/linux/csky/bits/procfs.h: Likewise.
	* sysdeps/unix/sysv/linux/csky/bits/shmlba.h: Likewise.
	* sysdeps/unix/sysv/linux/csky/c++-types.data: Likewise.
	* sysdeps/unix/sysv/linux/csky/configure: Likewise.
	* sysdeps/unix/sysv/linux/csky/configure.ac: Likewise.
	* sysdeps/unix/sysv/linux/csky/ipc_priv.h: Likewise.
	* sysdeps/unix/sysv/linux/csky/jmp_buf-macros.h: Likewise.
	* sysdeps/unix/sysv/linux/csky/kernel-features.h: Likewise.
	* sysdeps/unix/sysv/linux/csky/ld.abilist: Likewise.
	* sysdeps/unix/sysv/linux/csky/ldconfig.h: Likewise.
	* sysdeps/unix/sysv/linux/csky/libBrokenLocale.abilist: Likewise.
	* sysdeps/unix/sysv/linux/csky/libanl.abilist: Likewise.
	* sysdeps/unix/sysv/linux/csky/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/csky/libcrypt.abilist: Likewise.
	* sysdeps/unix/sysv/linux/csky/libdl.abilist: Likewise.
	* sysdeps/unix/sysv/linux/csky/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/csky/libpthread.abilist: Likewise.
	* sysdeps/unix/sysv/linux/csky/libresolv.abilist: Likewise.
	* sysdeps/unix/sysv/linux/csky/librt.abilist: Likewise.
	* sysdeps/unix/sysv/linux/csky/libthread_db.abilist: Likewise.
	* sysdeps/unix/sysv/linux/csky/libutil.abilist: Likewise.
	* sysdeps/unix/sysv/linux/csky/localplt.data: Likewise.
	* sysdeps/unix/sysv/linux/csky/makecontext.c: Likewise.
	* sysdeps/unix/sysv/linux/csky/profil-counter.h: Likewise.
	* sysdeps/unix/sysv/linux/csky/pt-vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/csky/register-dump.h: Likewise.
	* sysdeps/unix/sysv/linux/csky/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/csky/sigcontextinfo.h: Likewise.
	* sysdeps/unix/sysv/linux/csky/sys/cachectl.h: Likewise.
	* sysdeps/unix/sysv/linux/csky/sys/ucontext.h: Likewise.
	* sysdeps/unix/sysv/linux/csky/sys/user.h: Likewise.
	* sysdeps/unix/sysv/linux/csky/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/csky/sysdep.h: Likewise.

1 files changed, 193 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/csky/register-dump.h b/sysdeps/unix/sysv/linux/csky/register-dump.h
new file mode 100644
index 0000000000..9abe87a7d6
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/csky/register-dump.h
@@ -0,0 +1,193 @@
+/* Dump registers.
+   Copyright (C) 2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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/>.  */
+
+#include <sys/uio.h>
+#include <_itoa.h>
+#include <bits/sigcontext.h>
+#include <sys/ucontext.h>
+
+/* abiv1 register dump in this format:
+
+ PSR: XXXXXXXX  PC: XXXXXXXX   SP: XXXXXXXX   LR: XXXXXXXX
+ MASK: XXXXXXXX
+
+ A0: XXXXXXXX   A1: XXXXXXXX   A2: XXXXXXXX   A3: XXXXXXXX
+ R6: XXXXXXXX   R7: XXXXXXXX   R8: XXXXXXXX   R9: XXXXXXXX
+ R10: XXXXXXXX  R11: XXXXXXXX  R12: XXXXXXXX  R13: XXXXXXXX
+ R14: XXXXXXXX  R1: XXXXXXXX
+
+ abiv2 register dump in this format:
+
+ PSR: XXXXXXXX  PC: XXXXXXXX   SP: XXXXXXXX   LR: XXXXXXXX
+ MASK: XXXXXXXX
+
+ A0: XXXXXXXX   A1: XXXXXXXX   A2: XXXXXXXX   A3: XXXXXXXX
+ R4: XXXXXXXX   R5: XXXXXXXX   R6: XXXXXXXX   R7: XXXXXXXX
+ R8: XXXXXXXX   R9: XXXXXXXX   R10: XXXXXXXX  R11: XXXXXXXX
+ R12: XXXXXXXX  R13: XXXXXXXX  R14: XXXXXXXX  R15: XXXXXXXX
+ R16: XXXXXXXX  R17: XXXXXXXX  R18: XXXXXXXX  R19: XXXXXXXX
+ R20: XXXXXXXX  R21: XXXXXXXX  R22: XXXXXXXX  R23: XXXXXXXX
+ R24: XXXXXXXX  R25: XXXXXXXX  R26: XXXXXXXX  R27: XXXXXXXX
+ R28: XXXXXXXX  R29: XXXXXXXX  R30: XXXXXXXX  R31: XXXXXXXX
+
+ */
+
+static void
+hexvalue (unsigned long int value, char *buf, size_t len)
+{
+  char *cp = _itoa_word (value, buf + len, 16, 0);
+  while (cp > buf)
+    *--cp = '0';
+}
+
+static void
+register_dump (int fd, const struct ucontext_t *ctx)
+{
+  char regs[35][8];
+  struct iovec iov[97];
+  size_t nr = 0;
+
+#define ADD_STRING(str) \
+  iov[nr].iov_base = (char *) str;					      \
+  iov[nr].iov_len = strlen (str);					      \
+  ++nr
+#define ADD_MEM(str, len) \
+  iov[nr].iov_base = str;						      \
+  iov[nr].iov_len = len;						      \
+  ++nr
+
+  /* Generate strings of register contents.  */
+  hexvalue (ctx->uc_mcontext.__gregs.__sr, regs[0], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__pc, regs[1], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__usp, regs[2], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__lr, regs[3], 8);
+  hexvalue (ctx->uc_mcontext.__mask, regs[4], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__a0, regs[5], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__a1, regs[6], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__a2, regs[7], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__a3, regs[8], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__regs[0], regs[9], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__regs[1], regs[10], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__regs[2], regs[11], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__regs[3], regs[12], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__regs[4], regs[13], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__regs[5], regs[14], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__regs[6], regs[15], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__regs[7], regs[16], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__regs[8], regs[17], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__regs[9], regs[18], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[0], regs[19], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[1], regs[20], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[2], regs[21], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[3], regs[22], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[4], regs[23], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[5], regs[24], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[6], regs[25], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[7], regs[26], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[8], regs[27], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[9], regs[28], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[10], regs[29], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[11], regs[30], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[12], regs[31], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[13], regs[32], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__exregs[14], regs[33], 8);
+  hexvalue (ctx->uc_mcontext.__gregs.__tls, regs[34], 8);
+
+  /* Generate the output.  */
+  ADD_STRING ("Register dump:\n\n PSR: ");
+  ADD_MEM (regs[0], 8);
+  ADD_STRING ("  PC: ");
+  ADD_MEM (regs[1], 8);
+  ADD_STRING ("   SP: ");
+  ADD_MEM (regs[2], 8);
+  ADD_STRING ("   LR: ");
+  ADD_MEM (regs[3], 8);
+  ADD_STRING ("\n MASK: ");
+  ADD_MEM (regs[4], 8);
+  ADD_STRING ("\n\n A0: ");
+  ADD_MEM (regs[5], 8);
+  ADD_STRING ("   A1: ");
+  ADD_MEM (regs[6], 8);
+  ADD_STRING ("   A2: ");
+  ADD_MEM (regs[7], 8);
+  ADD_STRING ("   A3: ");
+  ADD_MEM (regs[8], 8);
+  ADD_STRING ("\n R4: ");
+  ADD_MEM (regs[9], 8);
+  ADD_STRING ("   r5: ");
+  ADD_MEM (regs[10], 8);
+  ADD_STRING ("   r6: ");
+  ADD_MEM (regs[11], 8);
+  ADD_STRING ("   r7: ");
+  ADD_MEM (regs[12], 8);
+  ADD_STRING ("\n R8: ");
+  ADD_MEM (regs[13], 8);
+  ADD_STRING ("   R9: ");
+  ADD_MEM (regs[14], 8);
+  ADD_STRING ("   R10: ");
+  ADD_MEM (regs[15], 8);
+  ADD_STRING ("  R11: ");
+  ADD_MEM (regs[16], 8);
+  ADD_STRING ("\n R12: ");
+  ADD_MEM (regs[17], 8);
+  ADD_STRING ("  R13: ");
+  ADD_MEM (regs[18], 8);
+  ADD_STRING ("  R14: ");
+  ADD_MEM (regs[19], 8);
+  ADD_STRING ("  R15: ");
+  ADD_MEM (regs[20], 8);
+  ADD_STRING ("\n R16: ");
+  ADD_MEM (regs[21], 8);
+  ADD_STRING ("  R17: ");
+  ADD_MEM (regs[22], 8);
+  ADD_STRING ("  R18: ");
+  ADD_MEM (regs[23], 8);
+  ADD_STRING ("  R19: ");
+  ADD_MEM (regs[24], 8);
+  ADD_STRING ("\n R20: ");
+  ADD_MEM (regs[25], 8);
+  ADD_STRING ("  R21: ");
+  ADD_MEM (regs[26], 8);
+  ADD_STRING ("  R22: ");
+  ADD_MEM (regs[27], 8);
+  ADD_STRING ("  R23: ");
+  ADD_MEM (regs[28], 8);
+  ADD_STRING ("\n R24: ");
+  ADD_MEM (regs[29], 8);
+  ADD_STRING ("  R25: ");
+  ADD_MEM (regs[30], 8);
+  ADD_STRING ("  R26: ");
+  ADD_MEM (regs[31], 8);
+  ADD_STRING ("  R27: ");
+  ADD_MEM (regs[32], 8);
+  ADD_STRING ("\n R28: ");
+  ADD_MEM (regs[33], 8);
+  ADD_STRING ("  R29: ");
+  ADD_MEM (regs[34], 8);
+  ADD_STRING ("  R30: ");
+  ADD_MEM (regs[33], 8);
+  ADD_STRING ("  TP: ");
+  ADD_MEM (regs[34], 8);
+
+  ADD_STRING ("\n");
+
+  /* Write the stuff out.  */
+  writev (fd, iov, nr);
+}
+
+#define REGISTER_DUMP register_dump (fd, ctx)