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.
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@ -1,3 +1,18 @@
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Mon Jun 16 19:12:51 1997 Geoff Keating <geoffk@ozemail.com.au>
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* config/tc-ppc.h (tc_fix_adjustable): Don't let the assembler
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calculate relocations to any external symbol, because we might be
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linking a shared object and the symbol might be overriden or moved
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(for instance, moved into a static executable's .bss section).
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(GLOBAL_OFFSET_TABLE_NAME): Delete. This is an i386 wierdness.
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* config/tc-ppc.h (tc_fix_adjustable): GOT-based relocations can't
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be calculated by the assembler.
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* config/tc-ppc.c (md_apply_fix3): Handle @plt or @local branch
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whose destination lies in the same file, by ignoring the @plt or
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@local and aiming the branch at its destination.
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Mon Jun 16 13:59:18 1997 H.J. Lu <hjl@gnu.ai.mit.edu>
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* symbols.c (copy_symbol_attributes): Copy BSF_OBJECT flag.
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@ -1,5 +1,5 @@
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/* tc-ppc.h -- Header file for tc-ppc.c.
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Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
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Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
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Written by Ian Lance Taylor, Cygnus Support.
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This file is part of GAS, the GNU Assembler.
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@ -21,6 +21,15 @@
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#define TC_PPC
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#ifdef ANSI_PROTOTYPES
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struct fix;
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#endif
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/* Set the endianness we are using. Default to big endian. */
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#ifndef TARGET_BYTES_BIG_ENDIAN
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#define TARGET_BYTES_BIG_ENDIAN 1
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#endif
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#ifndef BFD_ASSEMBLER
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#error PowerPC support requires BFD_ASSEMBLER
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#endif
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@ -74,24 +83,10 @@ extern int target_big_endian;
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#define NO_STRING_ESCAPES
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#endif
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/* When using COFF, we determine whether or not to output a symbol
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based on sy_tc.output, not on the name. */
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#ifdef OBJ_XCOFF
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#define LOCAL_LABEL(name) 0
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#endif
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#ifdef OBJ_ELF
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/* When using ELF, local labels start with '.'. */
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#define LOCAL_LABEL(name) (name[0] == '.' \
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&& (name[1] == 'L' || name[1] == '.'))
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#define FAKE_LABEL_NAME ".L0\001"
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#define DIFF_EXPR_OK /* .-foo gets turned into PC relative relocs */
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#endif
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/* Set the endianness we are using. Default to big endian. */
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#ifndef TARGET_BYTES_BIG_ENDIAN
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#define TARGET_BYTES_BIG_ENDIAN 1
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#endif
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#if TARGET_BYTES_BIG_ENDIAN
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#define PPC_BIG_ENDIAN 1
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#else
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@ -195,12 +190,6 @@ extern void ppc_adjust_symtab PARAMS ((void));
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#endif /* OBJ_XCOFF */
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#ifdef OBJ_ELF
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/* The name of the global offset table generated by the compiler. Allow
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this to be overridden if need be. */
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#ifndef GLOBAL_OFFSET_TABLE_NAME
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#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
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#endif
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/* Branch prediction relocations must force relocation */
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#define TC_FORCE_RELOCATION_SECTION(FIXP,SEC) \
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((FIXP)->fx_r_type == BFD_RELOC_PPC_B16_BRTAKEN \
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@ -236,6 +225,20 @@ extern int ppc_section_flags PARAMS ((int, int, int));
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#define tc_comment_chars ppc_comment_chars
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extern const char *ppc_comment_chars;
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/* Keep relocations relative to the GOT, or non-PC relative. */
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#define tc_fix_adjustable(FIX) \
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((FIX)->fx_r_type != BFD_RELOC_16_GOTOFF && \
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(FIX)->fx_r_type != BFD_RELOC_LO16_GOTOFF && \
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(FIX)->fx_r_type != BFD_RELOC_HI16_GOTOFF && \
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(FIX)->fx_r_type != BFD_RELOC_HI16_S_GOTOFF && \
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(FIX)->fx_r_type != BFD_RELOC_GPREL16 && \
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! S_IS_EXTERNAL ((FIX)->fx_addsy) \
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&& ! S_IS_WEAK ((FIX)->fx_addsy) \
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&& ((FIX)->fx_pcrel \
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|| ((FIX)->fx_subsy != NULL \
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&& (S_GET_SEGMENT ((FIX)->fx_subsy) \
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== S_GET_SEGMENT ((FIX)->fx_addsy)))))
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#endif /* OBJ_ELF */
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/* call md_apply_fix3 with segment instead of md_apply_fix */
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@ -243,6 +246,7 @@ extern const char *ppc_comment_chars;
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/* call md_pcrel_from_section, not md_pcrel_from */
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#define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section(FIXP, SEC)
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extern long md_pcrel_from_section PARAMS ((struct fix *, segT));
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#define md_parse_name(name, exp) ppc_parse_name (name, exp)
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extern int ppc_parse_name PARAMS ((const char *, struct expressionS *));
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