Update new test after merge.

1 files changed, 143 insertions, 0 deletions

diff --git a/backends/ppc_symbol.c b/backends/ppc_symbol.c
new file mode 100644
index 00000000..f161d70e
--- /dev/null
+++ b/backends/ppc_symbol.c
@@ -0,0 +1,143 @@
+/* PPC specific symbolic name handling.
+   Copyright (C) 2004, 2005 Red Hat, Inc.
+   Written by Ulrich Drepper <[email protected]>, 2004.
+
+   This program is Open Source software; you can redistribute it and/or
+   modify it under the terms of the Open Software License version 1.0 as
+   published by the Open Source Initiative.
+
+   You should have received a copy of the Open Software License along
+   with this program; if not, you may obtain a copy of the Open Software
+   License version 1.0 from http://www.opensource.org/licenses/osl.php or
+   by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
+   3001 King Ranch Road, Ukiah, CA 95482.   */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <assert.h>
+#include <elf.h>
+#include <stddef.h>
+#include <string.h>
+
+#define BACKEND		ppc_
+#include "libebl_CPU.h"
+
+
+/* Check for the simple reloc types.  */
+Elf_Type
+ppc_reloc_simple_type (Ebl *ebl __attribute__ ((unused)), int type)
+{
+  switch (type)
+    {
+    case R_PPC_ADDR32:
+    case R_PPC_UADDR32:
+      return ELF_T_WORD;
+    case R_PPC_UADDR16:
+      return ELF_T_HALF;
+    default:
+      return ELF_T_NUM;
+    }
+}
+
+
+const char *
+ppc_dynamic_tag_name (int64_t tag, char *buf __attribute__ ((unused)),
+		      size_t len __attribute__ ((unused)))
+{
+  switch (tag)
+    {
+    case DT_PPC_GOT:
+      return "PPC_GOT";
+    default:
+      break;
+    }
+  return NULL;
+}
+
+
+bool
+ppc_dynamic_tag_check (int64_t tag)
+{
+  return tag == DT_PPC_GOT;
+}
+
+
+/* Look for DT_PPC_GOT.  */
+static bool
+find_dyn_got (Elf *elf, GElf_Ehdr *ehdr, GElf_Addr *addr)
+{
+  for (int i = 0; i < ehdr->e_phnum; ++i)
+    {
+      GElf_Phdr phdr_mem;
+      GElf_Phdr *phdr = gelf_getphdr (elf, i, &phdr_mem);
+      if (phdr == NULL || phdr->p_type != PT_DYNAMIC)
+	continue;
+
+      Elf_Scn *scn = gelf_offscn (elf, phdr->p_offset);
+      GElf_Shdr shdr_mem;
+      GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
+      Elf_Data *data = elf_getdata (scn, NULL);
+      if (shdr != NULL && shdr->sh_type == SHT_DYNAMIC && data != NULL)
+	for (unsigned int j = 0; j < shdr->sh_size / shdr->sh_entsize; ++j)
+	  {
+	    GElf_Dyn dyn_mem;
+	    GElf_Dyn *dyn = gelf_getdyn (data, j, &dyn_mem);
+	    if (dyn != NULL && dyn->d_tag == DT_PPC_GOT)
+	      {
+		*addr = dyn->d_un.d_ptr;
+		return true;
+	      }
+	  }
+
+      /* There is only one PT_DYNAMIC entry.  */
+      break;
+    }
+
+  return false;
+}
+
+
+/* Check whether given symbol's st_value and st_size are OK despite failing
+   normal checks.  */
+bool
+ppc_check_special_symbol (Elf *elf, GElf_Ehdr *ehdr, const GElf_Sym *sym,
+			  const char *name, const GElf_Shdr *destshdr)
+{
+  if (name == NULL)
+    return false;
+
+  if (strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
+    {
+      GElf_Addr gotaddr;
+      if (find_dyn_got (elf, ehdr, &gotaddr))
+	return sym->st_value == gotaddr;
+      return sym->st_value == destshdr->sh_addr + 4;
+    }
+
+  const char *sname = elf_strptr (elf, ehdr->e_shstrndx, destshdr->sh_name);
+  if (sname == NULL)
+    return false;
+
+  if (strcmp (name, "_SDA_BASE_") == 0)
+    return (strcmp (sname, ".sdata") == 0
+	    && sym->st_value == destshdr->sh_addr + 0x8000
+	    && sym->st_size == 0);
+
+  if (strcmp (name, "_SDA2_BASE_") == 0)
+    return (strcmp (sname, ".sdata2") == 0
+	    && sym->st_value == destshdr->sh_addr + 0x8000
+	    && sym->st_size == 0);
+
+  return false;
+}
+
+
+/* Check if backend uses a bss PLT in this file.  */
+bool
+ppc_bss_plt_p (Elf *elf, GElf_Ehdr *ehdr)
+{
+  GElf_Addr addr;
+  return ! find_dyn_got (elf, ehdr, &addr);
+}