0f8f0c57ea
PR 17940 * dwarf2dbg.c (out_header): When generating dwarf sections use real symbols not temps for the start and end symbols. * config/tc-msp430.h (TC_FORCE_RELOCATION_SUB_SAME): Also prevent adjustments to relocations in debug sections. (TC_LINKRELAX_FIXUP): Likewise. * elf32-msp430.c (msp430_elf_relax_delete_bytes): Adjust debug symbols at end of sections. Adjust function sizes.
173 lines
7 KiB
C
173 lines
7 KiB
C
/* This file is tc-msp430.h
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Copyright (C) 2002-2015 Free Software Foundation, Inc.
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Contributed by Dmitry Diky <diwil@mail.ru>
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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#define TC_MSP430
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/* By convention, you should define this macro in the `.h' file. For
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example, `tc-m68k.h' defines `TC_M68K'. You might have to use this
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if it is necessary to add CPU specific code to the object format
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file. */
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#define TARGET_FORMAT "elf32-msp430"
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/* This macro is the BFD target name to use when creating the output
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file. This will normally depend upon the `OBJ_FMT' macro. */
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#define TARGET_ARCH bfd_arch_msp430
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/* This macro is the BFD architecture to pass to `bfd_set_arch_mach'. */
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#define TARGET_MACH 0
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/* This macro is the BFD machine number to pass to
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`bfd_set_arch_mach'. If it is not defined, GAS will use 0. */
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#define TARGET_BYTES_BIG_ENDIAN 0
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/* You should define this macro to be non-zero if the target is big
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endian, and zero if the target is little endian. */
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#define ONLY_STANDARD_ESCAPES
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/* If you define this macro, GAS will warn about the use of
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nonstandard escape sequences in a string. */
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#define md_operand(x)
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/* GAS will call this function for any expression that can not be
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recognized. When the function is called, `input_line_pointer'
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will point to the start of the expression. */
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#define md_number_to_chars number_to_chars_littleendian
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/* This should just call either `number_to_chars_bigendian' or
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`number_to_chars_littleendian', whichever is appropriate. On
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targets like the MIPS which support options to change the
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endianness, which function to call is a runtime decision. On
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other targets, `md_number_to_chars' can be a simple macro. */
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#define WORKING_DOT_WORD
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/*
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`md_short_jump_size'
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`md_long_jump_size'
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`md_create_short_jump'
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`md_create_long_jump'
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If `WORKING_DOT_WORD' is defined, GAS will not do broken word
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processing (*note Broken words::.). Otherwise, you should set
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`md_short_jump_size' to the size of a short jump (a jump that is
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just long enough to jump around a long jmp) and
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`md_long_jump_size' to the size of a long jump (a jump that can go
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anywhere in the function), You should define
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`md_create_short_jump' to create a short jump around a long jump,
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and define `md_create_long_jump' to create a long jump. */
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#define MD_APPLY_FIX3
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/* Values passed to md_apply_fix don't include symbol values. */
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#define MD_APPLY_SYM_VALUE(FIX) 0
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#define TC_HANDLES_FX_DONE
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#undef RELOC_EXPANSION_POSSIBLE
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/* If you define this macro, it means that `tc_gen_reloc' may return
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multiple relocation entries for a single fixup. In this case, the
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return value of `tc_gen_reloc' is a pointer to a null terminated
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array. */
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#define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section(FIXP, SEC)
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/* If you define this macro, it should return the offset between the
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address of a PC relative fixup and the position from which the PC
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relative adjustment should be made. On many processors, the base
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of a PC relative instruction is the next instruction, so this
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macro would return the length of an instruction. */
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extern long md_pcrel_from_section (struct fix *, segT);
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#define LISTING_WORD_SIZE 2
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/* The number of bytes to put into a word in a listing. This affects
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the way the bytes are clumped together in the listing. For
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example, a value of 2 might print `1234 5678' where a value of 1
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would print `12 34 56 78'. The default value is 4. */
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/* Support symbols like: C$$IO$$. */
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#undef LEX_DOLLAR
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#define LEX_DOLLAR 1
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#define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) (P2VAR) = 0
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/* An `.lcomm' directive with no explicit alignment parameter will
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use this macro to set P2VAR to the alignment that a request for
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SIZE bytes will have. The alignment is expressed as a power of
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two. If no alignment should take place, the macro definition
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should do nothing. Some targets define a `.bss' directive that is
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also affected by this macro. The default definition will set
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P2VAR to the truncated power of two of sizes up to eight bytes. */
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#define md_relax_frag(SEG, FRAGP, STRETCH) \
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msp430_relax_frag (SEG, FRAGP, STRETCH)
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extern long msp430_relax_frag (segT, fragS *, long);
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#define TC_FORCE_RELOCATION_LOCAL(FIX) \
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msp430_force_relocation_local (FIX)
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extern int msp430_force_relocation_local (struct fix *);
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/* We need to add reference symbols for .data/.bss. */
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#define tc_frob_section(sec) msp430_frob_section (sec)
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extern void msp430_frob_section (asection *);
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extern int msp430_enable_relax;
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extern int msp430_enable_polys;
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#define tc_fix_adjustable(FIX) msp430_fix_adjustable (FIX)
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extern bfd_boolean msp430_fix_adjustable (struct fix *);
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/* Allow hexadeciaml numbers with 'h' suffix. Note that if the number
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starts with a letter it will be interpreted as a symbol name not a
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constant. Thus "beach" is a symbol not the hex value 0xbeac. So
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is A5A5h... */
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#define NUMBERS_WITH_SUFFIX 1
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#define md_end msp430_md_end
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extern void msp430_md_end (void);
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/* Do not allow call frame debug info optimization as otherwise we could
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generate the DWARF directives without the relocs necessary to patch
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them up. */
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#define md_allow_eh_opt 0
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/* The difference between same-section symbols may be affected by linker
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relaxation, so do not resolve such expressions in the assembler. */
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#define md_allow_local_subtract(l,r,s) msp430_allow_local_subtract (l, r, s)
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extern bfd_boolean msp430_allow_local_subtract (expressionS *, expressionS *, segT);
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#define RELOC_EXPANSION_POSSIBLE
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#define MAX_RELOC_EXPANSION 2
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#define DIFF_EXPR_OK
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/* Do not adjust relocations involving symbols in code sections,
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because it breaks linker relaxations. This could be fixed in the
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linker, but this fix is simpler, and it pretty much only affects
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object size a little bit. */
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#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC) \
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( ((SEC)->flags & SEC_CODE) != 0 \
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|| ((SEC)->flags & SEC_DEBUGGING) != 0 \
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|| ! SEG_NORMAL (SEC) \
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|| TC_FORCE_RELOCATION (FIX))
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/* We validate subtract arguments within tc_gen_reloc(),
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so don't report errors at this point. */
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#define TC_VALIDATE_FIX_SUB(FIX, SEG) 1
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#define DWARF2_USE_FIXED_ADVANCE_PC 1
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#define TC_LINKRELAX_FIXUP(seg) ((seg->flags & SEC_CODE) || (seg->flags & SEC_DEBUGGING))
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