[MicroBlaze]: Move MicroBlaze from ports to sysdeps.

2014-02-17  David Holsgrove <david.holsgrove@xilinx.com>

        * sysdeps/microblaze: Move directory from ports/sysdeps/microblaze.
        * sysdeps/unix/sysv/linux/microblaze: Move directory from
          ports/sysdeps/unix/sysv/linux/microblaze.
        * README: Add missing listing for microblaze*-*-linux-gnu.

Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>

42 files changed, 7783 insertions, 0 deletions

diff --git a/sysdeps/microblaze/Implies b/sysdeps/microblaze/Implies
new file mode 100644
index 0000000000..73c766c52e
--- /dev/null
+++ b/sysdeps/microblaze/Implies
@@ -0,0 +1,4 @@
+wordsize-32
+# MicroBlaze uses IEEE 754 floating point.
+ieee754/flt-32
+ieee754/dbl-64
diff --git a/sysdeps/microblaze/Makefile b/sysdeps/microblaze/Makefile
new file mode 100644
index 0000000000..f7c95ae115
--- /dev/null
+++ b/sysdeps/microblaze/Makefile
@@ -0,0 +1,11 @@
+ifeq ($(subdir),elf)
+CFLAGS-rtld.c += -Wno-uninitialized -Wno-unused
+endif
+
+ifeq ($(subdir),gmon)
+sysdep_routines += _mcount
+endif
+
+ifeq ($(subdir),resource)
+sysdep_routines += backtrace_linux
+endif
diff --git a/sysdeps/microblaze/__longjmp.S b/sysdeps/microblaze/__longjmp.S
new file mode 100644
index 0000000000..dc588ebfe2
--- /dev/null
+++ b/sysdeps/microblaze/__longjmp.S
@@ -0,0 +1,55 @@
+/* Copyright (C) 1997-2014 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 <sysdep.h>
+
+/* Jump to the position specified by ENV, causing the
+   setjmp call there to return VAL, or 1 if VAL is 0.  */
+
+/* void __longjmp (__jmp_buf env, int val) */
+
+ENTRY(__longjmp)
+    lwi   r1,r5,0
+    lwi   r2,r5,4
+    lwi   r13,r5,8
+    lwi   r14,r5,12
+    lwi   r15,r5,16
+    lwi   r16,r5,20
+    lwi   r17,r5,24
+    lwi   r18,r5,28
+    lwi   r19,r5,32
+    lwi   r20,r5,36
+    lwi   r21,r5,40
+    lwi   r22,r5,44
+    lwi   r23,r5,48
+    lwi   r24,r5,52
+    lwi   r25,r5,56
+    lwi   r26,r5,60
+    lwi   r27,r5,64
+    lwi   r28,r5,68
+    lwi   r29,r5,72
+    lwi   r30,r5,76
+    lwi   r31,r5,80
+    addk  r3,r6,r0
+    beqi  r3,L(return_1)
+    rtsd  r15,8
+    nop
+L(return_1):
+    rtsd  r15,8
+    addik r3,r0,1	/* delay slot.  */
+END(__longjmp)
diff --git a/sysdeps/microblaze/_mcount.S b/sysdeps/microblaze/_mcount.S
new file mode 100644
index 0000000000..b3be87e35d
--- /dev/null
+++ b/sysdeps/microblaze/_mcount.S
@@ -0,0 +1,91 @@
+/* Copyright (C) 1997-2014 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/>.  */
+
+	.global	_mcount
+	.type	_mcount, @function
+_mcount:
+	# Save regs.
+	addik   r1, r1,-4 * 24
+	swi	r31, r1, 4 * 23
+	swi	r30, r1, 4 * 22
+	swi	r29, r1, 4 * 21
+	swi	r28, r1, 4 * 20
+	swi	r27, r1, 4 * 19
+	swi	r26, r1, 4 * 18
+	swi	r25, r1, 4 * 17
+	swi	r24, r1, 4 * 16
+	swi	r23, r1, 4 * 15
+	swi	r22, r1, 4 * 14
+	swi	r21, r1, 4 * 13
+	swi	r20, r1, 4 * 12
+	swi	r19, r1, 4 * 11
+	swi	r15, r1, 4 * 10
+	swi	r12, r1, 4 * 9
+	swi	r11, r1, 4 * 8
+	swi	r10, r1, 4 * 7
+	swi	r8, r1, 4 * 6
+	swi	r7, r1, 4 * 5
+	swi	r6, r1, 4 * 4
+	swi	r5, r1, 4 * 3
+	swi	r4, r1, 4 * 2
+	swi	r3, r1, 4 * 1
+	swi	r2, r1, 4 * 0
+
+#ifdef SHARED
+	mfs     r20,rpc
+	addik   r20,r20,_GLOBAL_OFFSET_TABLE_+8
+	addk	r6, r0, r15	# callee is in r15.
+	brlid	r15, __mcount_internal@PLT
+	lwi	r5, r1, 4 * 24	# caller is on the stack.
+#else
+	# Pass from/to in r5 and r6.
+	addk	r6, r0, r15	# callee is in r15.
+	bralid	r15, __mcount_internal
+	lwi	r5, r1, 4 * 24	# caller is on the stack.
+#endif
+
+	# Reload regs
+	lwi	r31, r1, 4 * 23
+	lwi	r30, r1, 4 * 22
+	lwi	r29, r1, 4 * 21
+	lwi	r28, r1, 4 * 20
+	lwi	r27, r1, 4 * 19
+	lwi	r26, r1, 4 * 18
+	lwi	r25, r1, 4 * 17
+	lwi	r24, r1, 4 * 16
+	lwi	r23, r1, 4 * 15
+	lwi	r22, r1, 4 * 14
+	lwi	r21, r1, 4 * 13
+	lwi	r20, r1, 4 * 12
+	lwi	r19, r1, 4 * 11
+	lwi	r15, r1, 4 * 10
+	lwi	r12, r1, 4 * 9
+	lwi	r11, r1, 4 * 8
+	lwi	r10, r1, 4 * 7
+	lwi	r8, r1, 4 * 6
+	lwi	r7, r1, 4 * 5
+	lwi	r6, r1, 4 * 4
+	lwi	r5, r1, 4 * 3
+	lwi	r4, r1, 4 * 2
+	lwi	r3, r1, 4 * 1
+	lwi	r2, r1, 4 * 0
+
+	rtsd	r15, 8
+	addik	r1, r1, 4 * 24
+
+	.size	_mcount, . - _mcount
diff --git a/sysdeps/microblaze/abort-instr.h b/sysdeps/microblaze/abort-instr.h
new file mode 100644
index 0000000000..38469d490a
--- /dev/null
+++ b/sysdeps/microblaze/abort-instr.h
@@ -0,0 +1,2 @@
+/* An instruction which should crash any program is `illegal'.  */
+#define ABORT_INSTRUCTION asm ("brki r0, -1")
diff --git a/sysdeps/microblaze/asm-syntax.h b/sysdeps/microblaze/asm-syntax.h
new file mode 100644
index 0000000000..1d60e654a1
--- /dev/null
+++ b/sysdeps/microblaze/asm-syntax.h
@@ -0,0 +1,24 @@
+/* Copyright (C) 1997-2014 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/>.  */
+
+#undef ALIGN
+#define ALIGN(log) .align 1<<log
+
+#define R_(r) %##r
+#define R(r) R_(r)
+#define L(label) .##label
diff --git a/sysdeps/microblaze/backtrace.c b/sysdeps/microblaze/backtrace.c
new file mode 100644
index 0000000000..6b0c617b0f
--- /dev/null
+++ b/sysdeps/microblaze/backtrace.c
@@ -0,0 +1,139 @@
+/* Copyright (C) 2005-2014 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 <stdio.h>
+#include <string.h>
+#include <sysdep.h>
+#include <signal.h>
+#include <execinfo.h>
+
+extern int
+_identify_sighandler (unsigned long fp, unsigned long pc,
+                      unsigned long *pprev_fp, unsigned long *pprev_pc,
+                      unsigned long *retaddr);
+
+inline long
+get_frame_size (unsigned long instr)
+{
+  return abs ((short signed) (instr & 0xFFFF));
+}
+
+static unsigned long *
+find_frame_creation (unsigned long *pc)
+{
+  int i;
+
+  /* NOTE: Distance to search is arbitrary.
+     250 works well for most things,
+     750 picks up things like tcp_recvmsg,
+     1000 needed for fat_fill_super.  */
+  for (i = 0; i < 1000; i++, pc--)
+    {
+      unsigned long instr;
+      unsigned long frame_size;
+
+      instr = *pc;
+
+      /* Is the instruction of the form
+         addik r1, r1, foo ? */
+      if ((instr & 0xFFFF0000) != 0x30210000)
+        continue;
+
+      frame_size = get_frame_size (instr);
+
+      if ((frame_size < 8) || (frame_size & 3))
+        return NULL;
+
+      return pc;
+    }
+  return NULL;
+}
+
+static int
+lookup_prev_stack_frame (unsigned long fp, unsigned long pc,
+                         unsigned long *pprev_fp, unsigned long *pprev_pc,
+                         unsigned long *retaddr)
+{
+  unsigned long *prologue = NULL;
+
+  int is_signalhandler = _identify_sighandler (fp, pc, pprev_fp,
+                                               pprev_pc, retaddr);
+
+  if (!is_signalhandler)
+    {
+      prologue = find_frame_creation ((unsigned long *) pc);
+
+      if (prologue)
+        {
+          long frame_size = get_frame_size (*prologue);
+          *pprev_fp = fp + frame_size;
+          if (*retaddr != 0)
+            *pprev_pc = *retaddr;
+          else
+            *pprev_pc = *(unsigned long *) fp;
+
+          *retaddr = 0;
+          if (!*pprev_pc || (*pprev_pc & 3))
+            prologue=0;
+        }
+      else
+        {
+          *pprev_pc = 0;
+          *pprev_fp = fp;
+          *retaddr = 0;
+        }
+    }
+    return (!*pprev_pc || (*pprev_pc & 3)) ? -1 : 0;
+}
+
+int
+__backtrace (void **array, int size)
+{
+  unsigned long pc, fp;
+  unsigned long ppc, pfp;
+  /* Return address(r15) is required in the signal handler case, since the
+     return address of the function which causes the signal may not be
+     recorded in the stack.  */
+  unsigned long retaddr;
+
+  int count;
+  int rc = 0;
+
+  __asm__ __volatile__ ("mfs %0, rpc"
+                        : "=r"(pc));
+
+  __asm__ __volatile__ ("add %0, r1, r0"
+                        : "=r"(fp));
+
+  array[0] = (void *) pc;
+  retaddr = 0;
+  for (count = 1; count < size; count++)
+    {
+      rc = lookup_prev_stack_frame (fp, pc, &pfp, &ppc, &retaddr);
+
+      fp = pfp;
+      pc = ppc;
+      array[count] = (void *) pc;
+      if (rc)
+        return count;
+    }
+  return count;
+}
+
+weak_alias (__backtrace, backtrace)
+libc_hidden_def (__backtrace)
diff --git a/sysdeps/microblaze/backtrace_linux.c b/sysdeps/microblaze/backtrace_linux.c
new file mode 100644
index 0000000000..309d7ef000
--- /dev/null
+++ b/sysdeps/microblaze/backtrace_linux.c
@@ -0,0 +1,59 @@
+/* Copyright (C) 2005-2014 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 <stddef.h>
+#include <asm/sigcontext.h>
+#include <linux/signal.h>
+#include <asm-generic/ucontext.h>
+#include <asm/unistd.h>
+
+int
+_identify_sighandler (unsigned long fp, unsigned long pc,
+                      unsigned long *pprev_fp, unsigned long *pprev_pc,
+                      unsigned long *retaddr)
+{