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Mon Feb 2 12:39:05 1998 Geoff Keating <geoffk@ozemail.com.au>

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* config/tc-ppc.c (md_apply_fix3): Change BFD_RELOC_HI16 and
 	BFD_RELOC_HI16_S to store the high bits of any value.

	* config/tc-ppc.h (tc_fix_adjustable): Undo change of Fri Jun 27.
	(TC_RELOC_RTSYM_LOC_FIXUP): Don't let the
	assembler calculate relocations to any external symbol at all.
	* config/tc-ppc.c (md_apply_fix3) [OBJ_ELF]: Correct bugs
	involving generation of pc-relative relocs.
	(md_pcrel_from_section) [OBJ_ELF]: The job this code used to do
	has been moved to md_apply_fix3.

	* config/tc-ppc.c (md_apply_fix3): Fix test for too-far branch.
	(ppc_elf_suffix): Warn about 'identifier+constant@got' syntax,
	which actually means (the address of identifier's GOT entry) +
	constant, which is not particularly useful.
This commit is contained in:
Ian Lance Taylor 1998-02-02 17:44:57 +00:00
parent 4634263c4c
commit 32715d71b8
2 changed files with 45 additions and 15 deletions
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18
gas/ChangeLog
View File

@ -1,3 +1,21 @@
Mon Feb 2 12:39:05 1998 Geoff Keating <geoffk@ozemail.com.au>
* config/tc-ppc.c (md_apply_fix3): Change BFD_RELOC_HI16 and
BFD_RELOC_HI16_S to store the high bits of any value.
* config/tc-ppc.h (tc_fix_adjustable): Undo change of Fri Jun 27.
(TC_RELOC_RTSYM_LOC_FIXUP): Don't let the
assembler calculate relocations to any external symbol at all.
* config/tc-ppc.c (md_apply_fix3) [OBJ_ELF]: Correct bugs
involving generation of pc-relative relocs.
(md_pcrel_from_section) [OBJ_ELF]: The job this code used to do
has been moved to md_apply_fix3.
* config/tc-ppc.c (md_apply_fix3): Fix test for too-far branch.
(ppc_elf_suffix): Warn about 'identifier+constant@got' syntax,
which actually means (the address of identifier's GOT entry) +
constant, which is not particularly useful.
Fri Jan 30 11:02:35 1998 Doug Evans <devans@canuck.cygnus.com>
* read.h (include_dirs): Declare.

42
gas/config/tc-ppc.h
View File

@ -1,5 +1,5 @@
/* tc-ppc.h -- Header file for tc-ppc.c.
Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
Copyright (C) 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
This file is part of GAS, the GNU Assembler.
@ -84,7 +84,7 @@ extern int target_big_endian;
#endif
#ifdef OBJ_ELF
#define DIFF_EXPR_OK /* .-foo gets turned into PC relative relocs */
#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
#endif
#if TARGET_BYTES_BIG_ENDIAN
@ -190,13 +190,8 @@ extern void ppc_adjust_symtab PARAMS ((void));
#endif /* OBJ_XCOFF */
#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
/* Branch prediction relocations must force relocation */
/* Branch prediction relocations must force relocation. */
#define TC_FORCE_RELOCATION_SECTION(FIXP,SEC) \
((FIXP)->fx_r_type == BFD_RELOC_PPC_B16_BRTAKEN \
|| (FIXP)->fx_r_type == BFD_RELOC_PPC_B16_BRNTAKEN \
@ -231,13 +226,30 @@ extern int ppc_section_flags PARAMS ((int, int, int));
#define tc_comment_chars ppc_comment_chars
extern const char *ppc_comment_chars;
/* Keep relocations relative to the GOT. */
#define tc_fix_adjustable(FIX) \
((FIX)->fx_r_type != BFD_RELOC_16_GOTOFF \
&& (FIX)->fx_r_type != BFD_RELOC_LO16_GOTOFF \
&& (FIX)->fx_r_type != BFD_RELOC_HI16_GOTOFF \
&& (FIX)->fx_r_type != BFD_RELOC_HI16_S_GOTOFF \
&& (FIX)->fx_r_type != BFD_RELOC_GPREL16)
/* Keep relocations relative to the GOT, or non-PC relative. */
#define tc_fix_adjustable(FIX) \
((FIX)->fx_r_type != BFD_RELOC_16_GOTOFF \
&& (FIX)->fx_r_type != BFD_RELOC_LO16_GOTOFF \
&& (FIX)->fx_r_type != BFD_RELOC_HI16_GOTOFF \
&& (FIX)->fx_r_type != BFD_RELOC_HI16_S_GOTOFF \
&& (FIX)->fx_r_type != BFD_RELOC_GPREL16 \
&& ! S_IS_EXTERNAL ((FIX)->fx_addsy) \
&& ! S_IS_WEAK ((FIX)->fx_addsy) \
&& ((FIX)->fx_pcrel \
|| ((FIX)->fx_subsy != NULL \
&& (S_GET_SEGMENT ((FIX)->fx_subsy) \
== S_GET_SEGMENT ((FIX)->fx_addsy)))))
/* We must never ever try to resolve references to externally visible
symbols in the assembler, because the .o file might go into a shared
library, and some other shared library might override that symbol. */
#define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \
((FIX)->fx_addsy == NULL \
|| (! S_IS_EXTERNAL ((FIX)->fx_addsy) \
&& ! S_IS_WEAK ((FIX)->fx_addsy) \
&& S_IS_DEFINED ((FIX)->fx_addsy) \
&& ! S_IS_COMMON ((FIX)->fx_addsy)))
#endif /* OBJ_ELF */
/* call md_apply_fix3 with segment instead of md_apply_fix */