Allow configuration of PowerPC embedded ABI.

3 files changed, 171 insertions, 0 deletions

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 72c437a..d64caec 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,12 @@
+Thu Jan 26 11:35:33 1995  Michael Meissner  <meissner@cygnus.com>
+
+	* configure: Add support for configuring powerpc-*-eabi.
+
+	* config/tc-ppc.c (GOT_symbol): Define if object format is ELF.
+
+	* config/tc-ppc.h (GLOBAL_OFFSET_TABLE_NAME): Define if object
+	format is ELF and not defined to be "_GLOBAL_OFFSET_TABLE_".
+
 Wed Jan 25 16:23:13 1995  Jim Wilson  <wilson@chestnut.cygnus.com>
 
 	* tc-sh.c (little): Add argument IGNORE to avoid compiler warnings.
diff --git a/gas/config/tc-ppc.c b/gas/config/tc-ppc.c
index e2f4ccc..8f7ecae 100644
--- a/gas/config/tc-ppc.c
+++ b/gas/config/tc-ppc.c
@@ -182,6 +182,11 @@ static asection *ppc_coff_debug_section;
 static bfd_size_type ppc_debug_name_section_size;
 
 #endif /* OBJ_COFF */
+
+#ifdef OBJ_ELF
+symbolS *GOT_symbol;		/* Pre-defined "_GLOBAL_OFFSET_TABLE" */
+#endif /* OBJ_ELF */
+
 
 #ifdef OBJ_ELF
 CONST char *md_shortopts = "um:VQ:";
diff --git a/gas/config/tc-ppc.h b/gas/config/tc-ppc.h
new file mode 100644
index 0000000..82a1841
--- /dev/null
+++ b/gas/config/tc-ppc.h
@@ -0,0 +1,157 @@
+/* tc-ppc.h -- Header file for tc-ppc.c.
+   Copyright (C) 1994 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Cygnus Support.
+
+   This file is part of GAS, the GNU Assembler.
+
+   GAS is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   GAS 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GAS; see the file COPYING.  If not, write to
+   the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#define TC_PPC
+
+#ifndef BFD_ASSEMBLER
+ #error PowerPC support requires BFD_ASSEMBLER
+#endif
+
+/* The target BFD architecture.  */
+#define TARGET_ARCH (ppc_arch ())
+extern enum bfd_architecture ppc_arch PARAMS ((void));
+
+/* The target BFD format.  */
+#ifdef OBJ_COFF
+#define TARGET_FORMAT "aixcoff-rs6000"
+#endif
+#ifdef OBJ_ELF
+#define TARGET_FORMAT "elf32-powerpc"
+#endif
+
+/* Permit temporary numeric labels.  */
+#define LOCAL_LABELS_FB
+
+/* $ is used to refer to the current location.  */
+#define DOLLAR_DOT
+
+/* Strings do not use backslash escapes.  */
+#define NO_STRING_ESCAPES
+
+#ifdef OBJ_COFF
+/* When using COFF, we determine whether or not to output a symbol
+   based on sy_tc.output, not on the name.  */
+#define LOCAL_LABEL(name) 0
+#endif
+#ifdef OBJ_ELF
+/* When using ELF, local labels start with '.'.  */
+#define LOCAL_LABEL(name) (name[0] == '.' \
+			   && (name[1] == 'L' || name[1] == '.'))
+#define FAKE_LABEL_NAME ".L0\001"
+#endif
+
+/* Set the endianness we are using.  Default to big endian.  */
+#ifndef TARGET_BYTES_BIG_ENDIAN
+#ifndef TARGET_BYTES_LITTLE_ENDIAN
+#define TARGET_BYTES_BIG_ENDIAN
+#endif
+#endif
+
+#ifdef TARGET_BYTES_BIG_ENDIAN
+#define PPC_BIG_ENDIAN 1
+#else
+#define PPC_BIG_ENDIAN 0
+#endif
+
+/* We don't need to handle .word strangely.  */
+#define WORKING_DOT_WORD
+
+/* We set the fx_done field appropriately in md_apply_fix.  */
+#define TC_HANDLES_FX_DONE
+
+#ifdef OBJ_COFF
+
+/* Declarations needed when generating XCOFF code.  XCOFF is an
+   extension of COFF, used only on the RS/6000.  Rather than create an
+   obj-xcoff, we just use obj-coff, and handle the extensions here in
+   tc-ppc.  */
+
+/* We need to keep some information for symbols.  */
+struct ppc_tc_sy
+{
+  /* We keep a few linked lists of symbols.  */
+  struct symbol *next;
+  /* Non-zero if the symbol should be output.  The RS/6000 assembler
+     only outputs symbols that are external or are mentioned in a
+     .globl or .lglobl statement.  */
+  int output;
+  /* The symbol class.  */
+  int class;
+  /* The real name, if the symbol was renamed.  */
+  char *real_name;
+  /* For a csect symbol, the subsegment we are using.  This is zero
+     for symbols that are not csects.  */
+  subsegT subseg;
+  /* For a csect or common symbol, the alignment to use.  */
+  int align;
+  /* For a function symbol, a symbol whose value is the size.  The
+     field is NULL if there is no size.  */
+  struct symbol *size;
+  /* For a csect symbol, the last symbol which has been defined in
+     this csect, or NULL if none have been defined so far.  For a .bs
+     symbol, the referenced csect symbol.  */
+  struct symbol *within;
+};
+
+#define TC_SYMFIELD_TYPE struct ppc_tc_sy
+
+/* We need an additional auxent for function symbols.  */
+#define OBJ_COFF_MAX_AUXENTRIES 2
+
+/* Square and curly brackets are permitted in symbol names.  */
+#define LEX_BR 3
+
+/* Canonicalize the symbol name.  */
+#define tc_canonicalize_symbol_name(name) ppc_canonicalize_symbol_name (name)
+extern char *ppc_canonicalize_symbol_name PARAMS ((char *));
+
+/* Get the symbol class from the name.  */
+#define tc_symbol_new_hook(sym) ppc_symbol_new_hook (sym)
+extern void ppc_symbol_new_hook PARAMS ((struct symbol *));
+
+/* Set the symbol class of a label based on the csect.  */
+#define tc_frob_label(sym) ppc_frob_label (sym)
+extern void ppc_frob_label PARAMS ((struct symbol *));
+
+/* TOC relocs requires special handling.  */
+#define tc_fix_adjustable(fixp) ppc_fix_adjustable (fixp)
+extern int ppc_fix_adjustable PARAMS ((struct fix *));
+
+/* We need to set the section VMA.  */
+#define tc_frob_section(sec) ppc_frob_section (sec)
+extern void ppc_frob_section PARAMS ((asection *));
+
+/* Finish up the symbol.  */
+#define tc_frob_symbol(sym, punt) punt = ppc_frob_symbol (sym)
+extern int ppc_frob_symbol PARAMS ((struct symbol *));
+
+/* Finish up the file.  */
+#define tc_frob_file() ppc_frob_file ()
+extern void ppc_frob_file PARAMS ((void));
+
+#endif /* OBJ_COFF */
+
+#ifdef OBJ_ELF
+/* The name of the global offset table generated by the compiler. Allow
+   this to be overridden if need be. */
+#ifndef GLOBAL_OFFSET_TABLE_NAME
+#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
+#endif
+#endif