Update.

2002-07-29  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/__longjmp.S: Moved to...
	* sysdeps/powerpc/powerpc32/__longjmp.S: ...here.
	* sysdeps/powerpc/add_n.S: Moved to...
	* sysdeps/powerpc/powerpc32/add_n.S: ...here.
	* sysdeps/powerpc/addmul_1.S: Moved to...
	* sysdeps/powerpc/powerpc32/addmul_1.S: ...here.
	* sysdeps/powerpc/atomicity.h: Moved to...
	* sysdeps/powerpc/powerpc32/atomicity.h: ...here.
	* sysdeps/powerpc/backtrace.c: Moved to...
	* sysdeps/powerpc/powerpc32/backtrace.c: ...here.
	* sysdeps/powerpc/bp-asm.h: Moved to...
	* sysdeps/powerpc/powerpc32/bp-asm.h: ...here.
	* sysdeps/powerpc/bsd-_setjmp.S: Moved to...
	* sysdeps/powerpc/powerpc32/bsd-_setjmp.S: ...here.
	* sysdeps/powerpc/bsd-setjmp.S: Moved to...
	* sysdeps/powerpc/powerpc32/bsd-setjmp.S: ...here.
	* sysdeps/powerpc/dl-machine.c: Moved to...
	* sysdeps/powerpc/powerpc32/dl-machine.c: ...here.
	* sysdeps/powerpc/dl-machine.h: Moved to...
	* sysdeps/powerpc/powerpc32/dl-machine.h: ...here.
	* sysdeps/powerpc/dl-start.S: Moved to...
	* sysdeps/powerpc/powerpc32/dl-start.S: ...here.
	* sysdeps/powerpc/gprrest0.S: Moved to...
	* sysdeps/powerpc/powerpc32/gprrest0.S: ...here.
	* sysdeps/powerpc/gprrest1.S: Moved to...
	* sysdeps/powerpc/powerpc32/gprrest1.S: ...here.
	* sysdeps/powerpc/gprsave0.S: Moved to...
	* sysdeps/powerpc/powerpc32/gprsave0.S: ...here.
	* sysdeps/powerpc/gprsave1.S: Moved to...
	* sysdeps/powerpc/powerpc32/gprsave1.S: ...here.
	* sysdeps/powerpc/lshift.S: Moved to...
	* sysdeps/powerpc/powerpc32/lshift.S: ...here.
	* sysdeps/powerpc/memset.S: Moved to...
	* sysdeps/powerpc/powerpc32/memset.S: ...here.
	* sysdeps/powerpc/mul_1.S: Moved to...
	* sysdeps/powerpc/powerpc32/mul_1.S: ...here.
	* sysdeps/powerpc/ppc-mcount.S: Moved to...
	* sysdeps/powerpc/powerpc32/ppc-mcount.S: ...here.
	* sysdeps/powerpc/register-dump.h: Moved to...
	* sysdeps/powerpc/powerpc32/register-dump.h: ...here.
	* sysdeps/powerpc/rshift.S: Moved to...
	* sysdeps/powerpc/powerpc32/rshift.S: ...here.
	* sysdeps/powerpc/setjmp.S: Moved to...
	* sysdeps/powerpc/powerpc32/setjmp.S: ...here.
	* sysdeps/powerpc/stpcpy.S: Moved to...
	* sysdeps/powerpc/powerpc32/stpcpy.S: ...here.
	* sysdeps/powerpc/strchr.S: Moved to...
	* sysdeps/powerpc/powerpc32/strchr.S: ...here.
	* sysdeps/powerpc/strcmp.S: Moved to...
	* sysdeps/powerpc/powerpc32/strcmp.S: ...here.
	* sysdeps/powerpc/strcpy.S: Moved to...
	* sysdeps/powerpc/powerpc32/strcpy.S: ...here.
	* sysdeps/powerpc/strlen.S: Moved to...
	* sysdeps/powerpc/powerpc32/strlen.S: ...here.
	* sysdeps/powerpc/sub_n.S: Moved to...
	* sysdeps/powerpc/powerpc32/sub_n.S: ...here.
	* sysdeps/powerpc/submul_1.S: Moved to...
	* sysdeps/powerpc/powerpc32/submul_1.S: ...here.
	* sysdeps/powerpc/elf/bzero.S: Moved to...
	* sysdeps/powerpc/powerpc32/elf/bzero.S: ...here.
	* sysdeps/powerpc/elf/start.S: Moved to...
	* sysdeps/powerpc/powerpc32/elf/start.S: ...here.
	* sysdeps/powerpc/fpu/__longjmp.S: Moved to...
	* sysdeps/powerpc/powerpc32/fpu/__longjmp.S: ...here.
	* sysdeps/powerpc/fpu/fprrest.S: Moved to...
	* sysdeps/powerpc/powerpc32/fpu/fprrest.S: ...here.
	* sysdeps/powerpc/fpu/fprsave.S: Moved to...
	* sysdeps/powerpc/powerpc32/fpu/fprsave.S: ...here.
	* sysdeps/powerpc/fpu/setjmp.S: Moved to...
	* sysdeps/powerpc/powerpc32/fpu/setjmp.S: ...here.
	* sysdeps/powerpc/fpu/s_copysign.S: Moved to...
	* sysdeps/powerpc/powerpc32/fpu/s_copysign.S: ...here.
	* sysdeps/powerpc/fpu/s_copysignf.S: Moved to...
	* sysdeps/powerpc/powerpc32/fpu/s_copysignf.S: ...here.
	* sysdeps/unix/sysv/linux/powerpc/brk.S: Moved to...
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/brk.S: ...here.
	* sysdeps/unix/sysv/linux/powerpc/clone.S: Moved to...
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S: ...here.
	* sysdeps/unix/sysv/linux/powerpc/glob64.c: Moved to...
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/glob64.c: ...here.
	* sysdeps/unix/sysv/linux/powerpc/kernel_stat.h: Moved to...
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/kernel_stat.h: ...here.
	* sysdeps/unix/sysv/linux/powerpc/socket.S: Moved to...
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/socket.S: ...here.
	* sysdeps/unix/sysv/linux/powerpc/sysdep.h: Moved to...
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h: ...here.
	* sysdeps/unix/sysv/linux/powerpc/syscalls.list: Moved to...
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list: ...here.
	Support PowerPC64.  Separate powerpc into powerpc/powerpc32 and
	powerpc/powerpc64.

2002-07-29  Steven Munroe  <sjmunroe@us.ibm.com>

	* FAQ.in: Add powerpc64 to supported targets list. Also state the
	minimum gcc version is 3.2
	* README: Add powerpc64 to supported targets list.
	* configure.in: Change machine=powerpc to machine=powerpc/powerpc32.
	Add powerpc64 and machine=powerpc/powerpc64.
	(HAVE_ASM_GLOBAL_DOT_NAME): Define if linux*powerpc/powerpc64*.
	* shlib-versions: Set DEFAULT version to 2.2.5 for powerpc64.
	* sysdeps/powerpc/Dist: Remove dl-machine.c, dl-start.S, ppc-mcount.S,
	gprsave1.S, gprsave0.S, gprrest1.S, and gprrest0.S.
	* sysdeps/powerpc/powerpc32/Dist: New file.
	* sysdeps/powerpc/Implies: Remove wordsize-32 and powerpc/soft-fp.
	* sysdeps/powerpc/powerpc32/Implies: New file.
	* sysdeps/powerpc/Makefile(cflags): Remove powerpc32 specific cflags.
	($(with-fp) = no): Move test to powerpc32/Makefile.
	($(subdir) = misc): Move to powerpc32/Makefile.
	($(build-shared) = yes): Move to powerpc32/Makefile.
	($(subdir) = csu): Move to powerpc32/Makefile.
	(sysdep-rtld-routines): Remove dl-start.  Moved these bits to ...
	* sysdeps/powerpc/powerpc32/Makefile: New file.
	* sysdeps/powerpc/Versions: Remove libgcc functions.
	* sysdeps/powerpc/powerpc32/Versions: New file.
	* sysdeps/powerpc/fpu/Makefile: Remove fprsave and fprrest.
	* sysdeps/powerpc/powerpc32/fpu/Makefile: New file.
	* sysdeps/unix/sysv/linux/configure.in (powerpc*):
	Set arch_minimum_kernel=2.4.19 for powerpc/powerpc64. Also set
	libc_cv_gcc_unwind_find_fde=yes only if !powerpc/powerpc64.
	($machine): Add powerpc/powerpc64 to if ... | for
	libc_cv_slibdir=/libc64.
	(powerpc*): Set ldd_rewrite_script.
	* sysdeps/unix/sysv/linux/powerpc/ldd-rewrite.sed: New file.
	* sysdeps/unix/sysv/linux/powerpc/Dist: Remove clone.S.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/Dist: New file.
	Add clone.S.
	* sysdeps/unix/sysv/linux/powerpc/Makefile: Remove oldgetrlimit64.
	* sysdeps/unix/sysv/linux/powerpc/Versions: Remove GLIBC_2.0
	functions.  Remove GLIBC_2.2 functions except getrlimit and
	setrlimit.  Moved them to ...
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/Versions: New file.

2002-09-04  Ulrich Drepper  <drepper@redhat.com>

	* libio/tst-atime.c: Include <errno.h>.
	(do_test): Only perform fstatvfs check if ST_NOATIME is defined.

2002-09-03  Isamu Hasegawa  <isamu@yamato.ibm.com>

	* posix/regcomp.c (regcomp): Append "__restrict" modifier to avoid
	warnings of some compilers.
	(build_collating_symbol): Change the type of characters from
	"unsigned char"	to "char", and append a cast to "char*" pointer in
	array subscript.
	(build_collating_symbol): Likewise.
	(build_equiv_class): Likewise.
	(build_charclass): Likewise.
	(re_compile_pattern): Remove incorrect cast.
	(re_compile_fastmap_iter): Change the type of characters from
	"unsigned char"	to "char", and append a cast to "char*" pointer
	in array subscript.
	(parse_bracket_exp): Likewise.
	* posix/regex_internal.c (re_string_construct_common): Likewise.
	(re_string_allocate): Likewise.
	(re_string_construct): Likewise.
	(re_string_realloc_buffers): Likewise.
	(build_wcs_buffer): Likewise.
	(re_string_reconstruct): Likewise.
	* posix/regex_internal.h: Change the type of characters in
	re_string_t and bracket_elem_t from "unsigned char" to "char".
	* posix/regexec.c (regexec): Append "__restrict" modifier to avoid
	warnings of some compilers.
	(transit_state_bkref_loop): Change the type of characters from
	"unsigned char"	to "char", and append a cast to "char*" pointer in
	array subscript.
	(check_node_accept_bytes): Likewise.
	(find_collation_sequence_value): Likewise.

1 files changed, 538 insertions, 0 deletions

diff --git a/sysdeps/powerpc/powerpc32/dl-machine.c b/sysdeps/powerpc/powerpc32/dl-machine.c
new file mode 100644
index 0000000000..28a31f6d91
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/dl-machine.c
@@ -0,0 +1,538 @@
+/* Machine-dependent ELF dynamic relocation functions.  PowerPC version.
+   Copyright (C) 1995-2001, 2002 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <unistd.h>
+#include <string.h>
+#include <sys/param.h>
+#include <link.h>
+#include <ldsodefs.h>
+#include <elf/dynamic-link.h>
+#include <dl-machine.h>
+#include <stdio-common/_itoa.h>
+
+/* Because ld.so is now versioned, these functions can be in their own file;
+   no relocations need to be done to call them.
+   Of course, if ld.so is not versioned...  */
+#if !(DO_VERSIONING - 0)
+#error This will not work with versioning turned off, sorry.
+#endif
+
+
+/* Stuff for the PLT.  */
+#define PLT_INITIAL_ENTRY_WORDS 18
+#define PLT_LONGBRANCH_ENTRY_WORDS 0
+#define PLT_TRAMPOLINE_ENTRY_WORDS 6
+#define PLT_DOUBLE_SIZE (1<<13)
+#define PLT_ENTRY_START_WORDS(entry_number) \
+  (PLT_INITIAL_ENTRY_WORDS + (entry_number)*2				\
+   + ((entry_number) > PLT_DOUBLE_SIZE					\
+      ? ((entry_number) - PLT_DOUBLE_SIZE)*2				\
+      : 0))
+#define PLT_DATA_START_WORDS(num_entries) PLT_ENTRY_START_WORDS(num_entries)
+
+/* Macros to build PowerPC opcode words.  */
+#define OPCODE_ADDI(rd,ra,simm) \
+  (0x38000000 | (rd) << 21 | (ra) << 16 | ((simm) & 0xffff))
+#define OPCODE_ADDIS(rd,ra,simm) \
+  (0x3c000000 | (rd) << 21 | (ra) << 16 | ((simm) & 0xffff))
+#define OPCODE_ADD(rd,ra,rb) \
+  (0x7c000214 | (rd) << 21 | (ra) << 16 | (rb) << 11)
+#define OPCODE_B(target) (0x48000000 | ((target) & 0x03fffffc))
+#define OPCODE_BA(target) (0x48000002 | ((target) & 0x03fffffc))
+#define OPCODE_BCTR() 0x4e800420
+#define OPCODE_LWZ(rd,d,ra) \
+  (0x80000000 | (rd) << 21 | (ra) << 16 | ((d) & 0xffff))
+#define OPCODE_LWZU(rd,d,ra) \
+  (0x84000000 | (rd) << 21 | (ra) << 16 | ((d) & 0xffff))
+#define OPCODE_MTCTR(rd) (0x7C0903A6 | (rd) << 21)
+#define OPCODE_RLWINM(ra,rs,sh,mb,me) \
+  (0x54000000 | (rs) << 21 | (ra) << 16 | (sh) << 11 | (mb) << 6 | (me) << 1)
+
+#define OPCODE_LI(rd,simm)    OPCODE_ADDI(rd,0,simm)
+#define OPCODE_ADDIS_HI(rd,ra,value) \
+  OPCODE_ADDIS(rd,ra,((value) + 0x8000) >> 16)
+#define OPCODE_LIS_HI(rd,value) OPCODE_ADDIS_HI(rd,0,value)
+#define OPCODE_SLWI(ra,rs,sh) OPCODE_RLWINM(ra,rs,sh,0,31-sh)
+
+
+#define PPC_DCBST(where) asm volatile ("dcbst 0,%0" : : "r"(where) : "memory")
+#define PPC_SYNC asm volatile ("sync" : : : "memory")
+#define PPC_ISYNC asm volatile ("sync; isync" : : : "memory")
+#define PPC_ICBI(where) asm volatile ("icbi 0,%0" : : "r"(where) : "memory")
+#define PPC_DIE asm volatile ("tweq 0,0")
+
+/* Use this when you've modified some code, but it won't be in the
+   instruction fetch queue (or when it doesn't matter if it is). */
+#define MODIFIED_CODE_NOQUEUE(where) \
+     do { PPC_DCBST(where); PPC_SYNC; PPC_ICBI(where); } while (0)
+/* Use this when it might be in the instruction queue. */
+#define MODIFIED_CODE(where) \
+     do { PPC_DCBST(where); PPC_SYNC; PPC_ICBI(where); PPC_ISYNC; } while (0)
+
+
+/* The idea here is that to conform to the ABI, we are supposed to try
+   to load dynamic objects between 0x10000 (we actually use 0x40000 as
+   the lower bound, to increase the chance of a memory reference from
+   a null pointer giving a segfault) and the program's load address;
+   this may allow us to use a branch instruction in the PLT rather
+   than a computed jump.  The address is only used as a preference for
+   mmap, so if we get it wrong the worst that happens is that it gets
+   mapped somewhere else.  */
+
+ElfW(Addr)
+__elf_preferred_address(struct link_map *loader, size_t maplength,
+			ElfW(Addr) mapstartpref)
+{
+  ElfW(Addr) low, high;
+  struct link_map *l;
+
+  /* If the object has a preference, load it there!  */
+  if (mapstartpref != 0)
+    return mapstartpref;
+
+  /* Otherwise, quickly look for a suitable gap between 0x3FFFF and
+     0x70000000.  0x3FFFF is so that references off NULL pointers will
+     cause a segfault, 0x70000000 is just paranoia (it should always
+     be superceded by the program's load address).  */
+  low =  0x0003FFFF;
+  high = 0x70000000;
+  for (l = GL(dl_loaded); l; l = l->l_next)
+    {
+      ElfW(Addr) mapstart, mapend;
+      mapstart = l->l_map_start & ~(GL(dl_pagesize) - 1);
+      mapend = l->l_map_end | (GL(dl_pagesize) - 1);
+      assert (mapend > mapstart);
+
+      /* Prefer gaps below the main executable, note that l ==
+	 _dl_loaded does not work for static binaries loading
+	 e.g. libnss_*.so.  */
+      if ((mapend >= high || l->l_type == lt_executable)
+	  && high >= mapstart)
+	high = mapstart;
+      else if (mapend >= low && low >= mapstart)
+	low = mapend;
+      else if (high >= mapend && mapstart >= low)
+	{
+	  if (high - mapend >= mapstart - low)
+	    low = mapend;
+	  else
+	    high = mapstart;
+	}
+    }
+
+  high -= 0x10000; /* Allow some room between objects.  */
+  maplength = (maplength | (GL(dl_pagesize) - 1)) + 1;
+  if (high <= low || high - low < maplength )
+    return 0;
+  return high - maplength;  /* Both high and maplength are page-aligned.  */
+}
+
+/* Set up the loaded object described by L so its unrelocated PLT
+   entries will jump to the on-demand fixup code in dl-runtime.c.
+   Also install a small trampoline to be used by entries that have
+   been relocated to an address too far away for a single branch.  */
+
+/* There are many kinds of PLT entries:
+
+   (1)	A direct jump to the actual routine, either a relative or
+	absolute branch.  These are set up in __elf_machine_fixup_plt.
+
+   (2)	Short lazy entries.  These cover the first 8192 slots in
+        the PLT, and look like (where 'index' goes from 0 to 8191):
+
+	li %r11, index*4
+	b  &plt[PLT_TRAMPOLINE_ENTRY_WORDS+1]
+
+   (3)	Short indirect jumps.  These replace (2) when a direct jump
+	wouldn't reach.  They look the same except that the branch
+	is 'b &plt[PLT_LONGBRANCH_ENTRY_WORDS]'.
+
+   (4)  Long lazy entries.  These cover the slots when a short entry
+	won't fit ('index*4' overflows its field), and look like:
+
+	lis %r11, %hi(index*4 + &plt[PLT_DATA_START_WORDS])
+	lwzu %r12, %r11, %lo(index*4 + &plt[PLT_DATA_START_WORDS])
+	b  &plt[PLT_TRAMPOLINE_ENTRY_WORDS]
+	bctr
+
+   (5)	Long indirect jumps.  These replace (4) when a direct jump
+	wouldn't reach.  They look like:
+
+	lis %r11, %hi(index*4 + &plt[PLT_DATA_START_WORDS])
+	lwz %r12, %r11, %lo(index*4 + &plt[PLT_DATA_START_WORDS])
+	mtctr %r12
+	bctr
+
+   (6) Long direct jumps.  These are used when thread-safety is not
+       required.  They look like:
+
+       lis %r12, %hi(finaladdr)
+       addi %r12, %r12, %lo(finaladdr)
+       mtctr %r12
+       bctr
+
+
+   The lazy entries, (2) and (4), are set up here in
+   __elf_machine_runtime_setup.  (1), (3), and (5) are set up in
+   __elf_machine_fixup_plt.  (1), (3), and (6) can also be constructed
+   in __process_machine_rela.
+
+   The reason for the somewhat strange construction of the long
+   entries, (4) and (5), is that we need to ensure thread-safety.  For
+   (1) and (3), this is obvious because only one instruction is
+   changed and the PPC architecture guarantees that aligned stores are
+   atomic.  For (5), this is more tricky.  When changing (4) to (5),
+   the `b' instruction is first changed to to `mtctr'; this is safe
+   and is why the `lwzu' instruction is not just a simple `addi'.
+   Once this is done, and is visible to all processors, the `lwzu' can
+   safely be changed to a `lwz'.  */
+int
+__elf_machine_runtime_setup (struct link_map *map, int lazy, int profile)
+{
+  if (map->l_info[DT_JMPREL])
+    {
+      Elf32_Word i;
+      Elf32_Word *plt = (Elf32_Word *) D_PTR (map, l_info[DT_PLTGOT]);
+      Elf32_Word num_plt_entries = (map->l_info[DT_PLTRELSZ]->d_un.d_val
+				    / sizeof (Elf32_Rela));
+      Elf32_Word rel_offset_words = PLT_DATA_START_WORDS (num_plt_entries);
+      Elf32_Word data_words = (Elf32_Word) (plt + rel_offset_words);
+      Elf32_Word size_modified;
+
+      extern void _dl_runtime_resolve (void);
+      extern void _dl_prof_resolve (void);
+
+      /* Convert the index in r11 into an actual address, and get the
+	 word at that address.  */
+      plt[PLT_LONGBRANCH_ENTRY_WORDS] = OPCODE_ADDIS_HI (11, 11, data_words);
+      plt[PLT_LONGBRANCH_ENTRY_WORDS + 1] = OPCODE_LWZ (11, data_words, 11);
+
+      /* Call the procedure at that address.  */
+      plt[PLT_LONGBRANCH_ENTRY_WORDS + 2] = OPCODE_MTCTR (11);
+      plt[PLT_LONGBRANCH_ENTRY_WORDS + 3] = OPCODE_BCTR ();
+
+      if (lazy)
+	{
+	  Elf32_Word *tramp = plt + PLT_TRAMPOLINE_ENTRY_WORDS;
+	  Elf32_Word dlrr = (Elf32_Word)(profile
+					 ? _dl_prof_resolve
+					 : _dl_runtime_resolve);
+	  Elf32_Word offset;
+
+	  if (profile && _dl_name_match_p (GL(dl_profile), map))
+	    /* This is the object we are looking for.  Say that we really
+	       want profiling and the timers are started.  */
+	    GL(dl_profile_map) = map;
+
+	  /* For the long entries, subtract off data_words.  */
+	  tramp[0] = OPCODE_ADDIS_HI (11, 11, -data_words);
+	  tramp[1] = OPCODE_ADDI (11, 11, -data_words);
+
+	  /* Multiply index of entry by 3 (in r11).  */
+	  tramp[2] = OPCODE_SLWI (12, 11, 1);
+	  tramp[3] = OPCODE_ADD (11, 12, 11);
+	  if (dlrr <= 0x01fffffc || dlrr >= 0xfe000000)
+	    {
+	      /* Load address of link map in r12.  */
+	      tramp[4] = OPCODE_LI (12, (Elf32_Word) map);
+	      tramp[5] = OPCODE_ADDIS_HI (12, 12, (Elf32_Word) map);
+
+	      /* Call _dl_runtime_resolve.  */
+	      tramp[6] = OPCODE_BA (dlrr);
+	    }
+	  else
+	    {
+	      /* Get address of _dl_runtime_resolve in CTR.  */
+	      tramp[4] = OPCODE_LI (12, dlrr);
+	      tramp[5] = OPCODE_ADDIS_HI (12, 12, dlrr);
+	      tramp[6] = OPCODE_MTCTR (12);
+
+	      /* Load address of link map in r12.  */
+	      tramp[7] = OPCODE_LI (12, (Elf32_Word) map);
+	      tramp[8] = OPCODE_ADDIS_HI (12, 12, (Elf32_Word) map);
+
+	      /* Call _dl_runtime_resolve.  */
+	      tramp[9] = OPCODE_BCTR ();
+	    }
+
+	  /* Set up the lazy PLT entries.  */
+	  offset = PLT_INITIAL_ENTRY_WORDS;
+	  i = 0;
+	  while (i < num_plt_entries && i < PLT_DOUBLE_SIZE)
+	    {
+	      plt[offset  ] = OPCODE_LI (11, i * 4);
+	      plt[offset+1] = OPCODE_B ((PLT_TRAMPOLINE_ENTRY_WORDS + 2
+					 - (offset+1))
+					* 4);
+	      i++;
+	      offset += 2;
+	    }
+	  while (i < num_plt_entries)
+	    {
+	      plt[offset  ] = OPCODE_LIS_HI (11, i * 4 + data_words);
+	      plt[offset+1] = OPCODE_LWZU (12, i * 4 + data_words, 11);
+	      plt[offset+2] = OPCODE_B ((PLT_TRAMPOLINE_ENTRY_WORDS
+					 - (offset+2))
+					* 4);
+	      plt[offset+3] = OPCODE_BCTR ();
+	      i++;
+	      offset += 4;
+	    }
+	}
+
+      /* Now, we've modified code.  We need to write the changes from
+	 the data cache to a second-level unified cache, then make
+	 sure that stale data in the instruction cache is removed.
+	 (In a multiprocessor system, the effect is more complex.)
+	 Most of the PLT shouldn't be in the instruction cache, but
+	 there may be a little overlap at the start and the end.
+
+	 Assumes that dcbst and icbi apply to lines of 16 bytes or
+	 more.  Current known line sizes are 16, 32, and 128 bytes.  */
+
+      size_modified = lazy ? rel_offset_words : 6;
+      for (i = 0; i < size_modified; i += 4)
+	PPC_DCBST (plt + i);
+      PPC_DCBST (plt + size_modified - 1);
+      PPC_SYNC;
+      PPC_ICBI (plt);
+      PPC_ICBI (plt + size_modified - 1);
+      PPC_ISYNC;
+    }
+
+  return lazy;
+}
+
+Elf32_Addr
+__elf_machine_fixup_plt(struct link_map *map, const Elf32_Rela *reloc,
+			Elf32_Addr *reloc_addr, Elf32_Addr finaladdr)
+{
+  Elf32_Sword delta = finaladdr - (Elf32_Word) reloc_addr;
+  if (delta << 6 >> 6 == delta)
+    *reloc_addr = OPCODE_B (delta);
+  else if (finaladdr <= 0x01fffffc || finaladdr >= 0xfe000000)
+    *reloc_addr = OPCODE_BA (finaladdr);
+  else
+    {
+      Elf32_Word *plt, *data_words;
+      Elf32_Word index, offset, num_plt_entries;
+
+      num_plt_entries = (map->l_info[DT_PLTRELSZ]->d_un.d_val
+			 / sizeof(Elf32_Rela));
+      plt = (Elf32_Word *) D_PTR (map, l_info[DT_PLTGOT]);
+      offset = reloc_addr - plt;
+      index = (offset - PLT_INITIAL_ENTRY_WORDS)/2;
+      data_words = plt + PLT_DATA_START_WORDS (num_plt_entries);
+
+      reloc_addr += 1;
+
+      if (index < PLT_DOUBLE_SIZE)
+	{
+	  data_words[index] = finaladdr;
+	  PPC_SYNC;
+	  *reloc_addr = OPCODE_B ((PLT_LONGBRANCH_ENTRY_WORDS - (offset+1))
+				  * 4);
+	}
+      else
+	{
+	  index -= (index - PLT_DOUBLE_SIZE)/2;
+
+	  data_words[index] = finaladdr;
+	  PPC_SYNC;
+
+	  reloc_addr[1] = OPCODE_MTCTR (12);
+	  MODIFIED_CODE_NOQUEUE (reloc_addr + 1);
+	  PPC_SYNC;
+
+	  reloc_addr[0] = OPCODE_LWZ (12,
+				      (Elf32_Word) (data_words + index), 11);
+	}
+    }
+  MODIFIED_CODE (reloc_addr);
+  return finaladdr;
+}
+
+static void
+dl_reloc_overflow (struct link_map *map,
+		   const char *name,
+		   Elf32_Addr *const reloc_addr,
+		   const Elf32_Sym *sym,
+		   const Elf32_Sym *refsym)
+{
+  char buffer[128];
+  char *t;
+  const Elf32_Sym *errsym = sym ?: refsym;
+  t = stpcpy (buffer, name);
+  t = stpcpy (t, " relocation at 0x00000000");
+  _itoa_word ((unsigned) reloc_addr, t, 16, 0);
+  if (errsym)
+    {
+      const char *strtab;
+
+      strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
+      t = stpcpy (t, " for symbol `");
+      t = stpcpy (t, strtab + errsym->st_name);
+      t = stpcpy (t, "'");
+    }
+  t = stpcpy (t, " out of range");
+  _dl_signal_error (0, map->l_name, NULL, buffer);
+}
+
+void
+__process_machine_rela (struct link_map *map,
+			const Elf32_Rela *reloc,
+			const Elf32_Sym *sym,
+			const Elf32_Sym *refsym,
+			Elf32_Addr *const reloc_addr,
+			Elf32_Addr const finaladdr,
+			int rinfo)
+{
+  switch (rinfo)
+    {
+    case R_PPC_NONE:
+      return;
+
+    case R_PPC_ADDR32:
+    case R_PPC_UADDR32:
+    case R_PPC_GLOB_DAT:
+    case R_PPC_RELATIVE:
+      *reloc_addr = finaladdr;
+      return;
+
+    case R_PPC_ADDR24:
+      if (finaladdr > 0x01fffffc && finaladdr < 0xfe000000)
+	dl_reloc_overflow (map,  "R_PPC_ADDR24", reloc_addr, sym, refsym);
+      *reloc_addr = (*reloc_addr & 0xfc000003) | (finaladdr & 0x3fffffc);
+      break;
+
+    case R_PPC_ADDR16:
+    case R_PPC_UADDR16:
+      if (finaladdr > 0x7fff && finaladdr < 0x8000)
+	dl_reloc_overflow (map,  "R_PPC_ADDR16", reloc_addr, sym, refsym);
+      *(Elf32_Half*) reloc_addr = finaladdr;
+      break;
+
+    case R_PPC_ADDR16_LO:
+      *(Elf32_Half*) reloc_addr = finaladdr;
+      break;
+
+    case R_PPC_ADDR16_HI:
+      *(Elf32_Half*) reloc_addr = finaladdr >> 16;
+      break;
+
+    case R_PPC_ADDR16_HA:
+      *(Elf32_Half*) reloc_addr = (finaladdr + 0x8000) >> 16;
+      break;
+
+    case R_PPC_ADDR14:
+    case R_PPC_ADDR14_BRTAKEN:
+    case R_PPC_ADDR14_BRNTAKEN:
+      if (finaladdr > 0x7fff && finaladdr < 0x8000)
+	dl_reloc_overflow (map,  "R_PPC_ADDR14", reloc_addr, sym, refsym);
+      *reloc_addr = (*reloc_addr & 0xffff0003) | (finaladdr & 0xfffc);
+      if (rinfo != R_PPC_ADDR14)
+	*reloc_addr = ((*reloc_addr & 0xffdfffff)
+		       | ((rinfo == R_PPC_ADDR14_BRTAKEN)
+			  ^ (finaladdr >> 31)) << 21);
+      break;
+
+    case R_PPC_REL24:
+      {
+	Elf32_Sword delta = finaladdr - (Elf32_Word) reloc_addr;
+	if (delta << 6 >> 6 != delta)
+	  dl_reloc_overflow (map,  "R_PPC_REL24", reloc_addr, sym, refsym);
+	*reloc_addr = (*reloc_addr & 0xfc000003) | (delta & 0x3fffffc);
+      }
+      break;
+
+    case R_PPC_COPY:
+      if (sym == NULL)
+	/* This can happen in trace mode when an object could not be
+	   found.  */
+	return;
+      if (sym->st_size > refsym->st_size
+	  || (GL(dl_verbose) && sym->st_size < refsym->st_size))
+	{
+	  const char *strtab;
+
+	  strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
+	  _dl_error_printf ("\
+%s: Symbol `%s' has different size in shared object, onsider re-linking\n",
+			    rtld_progname ?: "<program name unknown>",
+			    strtab + refsym->st_name);
+	}
+      memcpy (reloc_addr, (char *) finaladdr, MIN (sym->st_size,
+						   refsym->st_size));
+      return;
+
+    case R_PPC_REL32:
+      *reloc_addr = finaladdr - (Elf32_Word) reloc_addr;
+      return;
+
+    case R_PPC_JMP_SLOT:
+      /* It used to be that elf_machine_fixup_plt was used here,
+	 but that doesn't work when ld.so relocates itself
+	 for the second time.  On the bright side, there's
+         no need to worry about thread-safety here.  */
+      {
+	Elf32_Sword delta = finaladdr - (Elf32_Word) reloc_addr;
+	if (delta << 6 >> 6 == delta)
+	  *reloc_addr = OPCODE_B (delta);
+	else if (finaladdr <= 0x01fffffc || finaladdr >= 0xfe000000)
+	  *reloc_addr = OPCODE_BA (finaladdr);
+	else
+	  {
+	    Elf32_Word *plt, *data_words;
+	    Elf32_Word index, offset, num_plt_entries;
+
+	    plt = (Elf32_Word *) D_PTR (map, l_info[DT_PLTGOT]);
+	    offset = reloc_addr - plt;
+
+	    if (offset < PLT_DOUBLE_SIZE*2 + PLT_INITIAL_ENTRY_WORDS)
+	      {
+		index = (offset - PLT_INITIAL_ENTRY_WORDS)/2;
+		num_plt_entries = (map->l_info[DT_PLTRELSZ]->d_un.d_val
+				   / sizeof(Elf32_Rela));
+		data_words = plt + PLT_DATA_START_WORDS (num_plt_entries);
+		data_words[index] = finaladdr;
+		reloc_addr[0] = OPCODE_LI (11, index * 4);
+		reloc_addr[1] = OPCODE_B ((PLT_LONGBRANCH_ENTRY_WORDS
+					   - (offset+1))
+					  * 4);
+		MODIFIED_CODE_NOQUEUE (reloc_addr + 1);
+	      }
+	    else
+	      {
+		reloc_addr[0] = OPCODE_LIS_HI (12, finaladdr);
+		reloc_addr[1] = OPCODE_ADDI (12, 12, finaladdr);
+		reloc_addr[2] = OPCODE_MTCTR (12);
+		reloc_addr[3] = OPCODE_BCTR ();
+		MODIFIED_CODE_NOQUEUE (reloc_addr + 3);
+	      }
+	  }
+      }
+      break;
+
+    default:
+      _dl_reloc_bad_type (map, rinfo, 0);
+      return;
+    }
+
+  MODIFIED_CODE_NOQUEUE (reloc_addr);
+}