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Mon Jun 16 19:12:51 1997 Geoff Keating <geoffk@ozemail.com.au> 

* config/tc-ppc.h (tc_fix_adjustable): Don't let the assembler
	calculate relocations to any external symbol, because we might be
	linking a shared object and the symbol might be overriden or moved
	(for instance, moved into a static executable's .bss section).
	(GLOBAL_OFFSET_TABLE_NAME): Delete. This is an i386 wierdness.

	* config/tc-ppc.h (tc_fix_adjustable): GOT-based relocations can't
	be calculated by the assembler.

	* config/tc-ppc.c (md_apply_fix3): Handle @plt or @local branch
	whose destination lies in the same file, by ignoring the @plt or
	@local and aiming the branch at its destination.
This commit is contained in:
Ian Lance Taylor 1997-06-16 23:17:22 +00:00
parent 08a561521f
commit 24a3e62262
2 changed files with 40 additions and 21 deletions
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15
gas/ChangeLog
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@ -1,3 +1,18 @@
Mon Jun 16 19:12:51 1997 Geoff Keating <geoffk@ozemail.com.au>
* config/tc-ppc.h (tc_fix_adjustable): Don't let the assembler
calculate relocations to any external symbol, because we might be
linking a shared object and the symbol might be overriden or moved
(for instance, moved into a static executable's .bss section).
(GLOBAL_OFFSET_TABLE_NAME): Delete. This is an i386 wierdness.
* config/tc-ppc.h (tc_fix_adjustable): GOT-based relocations can't
be calculated by the assembler.
* config/tc-ppc.c (md_apply_fix3): Handle @plt or @local branch
whose destination lies in the same file, by ignoring the @plt or
@local and aiming the branch at its destination.
Mon Jun 16 13:59:18 1997 H.J. Lu <hjl@gnu.ai.mit.edu>
* symbols.c (copy_symbol_attributes): Copy BSF_OBJECT flag.

46
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 Free Software Foundation, Inc.
Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
This file is part of GAS, the GNU Assembler.
@ -21,6 +21,15 @@
#define TC_PPC
#ifdef ANSI_PROTOTYPES
struct fix;
#endif
/* Set the endianness we are using. Default to big endian. */
#ifndef TARGET_BYTES_BIG_ENDIAN
#define TARGET_BYTES_BIG_ENDIAN 1
#endif
#ifndef BFD_ASSEMBLER
#error PowerPC support requires BFD_ASSEMBLER
#endif
@ -74,24 +83,10 @@ extern int target_big_endian;
#define NO_STRING_ESCAPES
#endif
/* When using COFF, we determine whether or not to output a symbol
based on sy_tc.output, not on the name. */
#ifdef OBJ_XCOFF
#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"
#define DIFF_EXPR_OK /* .-foo gets turned into PC relative relocs */
#endif
/* Set the endianness we are using. Default to big endian. */
#ifndef TARGET_BYTES_BIG_ENDIAN
#define TARGET_BYTES_BIG_ENDIAN 1
#endif
#if TARGET_BYTES_BIG_ENDIAN
#define PPC_BIG_ENDIAN 1
#else
@ -195,12 +190,6 @@ 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 */
#define TC_FORCE_RELOCATION_SECTION(FIXP,SEC) \
((FIXP)->fx_r_type == BFD_RELOC_PPC_B16_BRTAKEN \
@ -236,6 +225,20 @@ 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, 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)))))
#endif /* OBJ_ELF */
/* call md_apply_fix3 with segment instead of md_apply_fix */
@ -243,6 +246,7 @@ extern const char *ppc_comment_chars;
/* call md_pcrel_from_section, not md_pcrel_from */
#define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section(FIXP, SEC)
extern long md_pcrel_from_section PARAMS ((struct fix *, segT));
#define md_parse_name(name, exp) ppc_parse_name (name, exp)
extern int ppc_parse_name PARAMS ((const char *, struct expressionS *));