174 lines
7 KiB
C
174 lines
7 KiB
C
/* This file is tc-msp430.h
|
|
Copyright (C) 2002-2022 Free Software Foundation, Inc.
|
|
|
|
Contributed by Dmitry Diky <diwil@mail.ru>
|
|
|
|
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 3, 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, 51 Franklin Street - Fifth Floor, Boston, MA
|
|
02110-1301, USA. */
|
|
|
|
#define TC_MSP430
|
|
/* By convention, you should define this macro in the `.h' file. For
|
|
example, `tc-m68k.h' defines `TC_M68K'. You might have to use this
|
|
if it is necessary to add CPU specific code to the object format
|
|
file. */
|
|
|
|
#define TARGET_FORMAT "elf32-msp430"
|
|
/* This macro is the BFD target name to use when creating the output
|
|
file. This will normally depend upon the `OBJ_FMT' macro. */
|
|
|
|
#define TARGET_ARCH bfd_arch_msp430
|
|
/* This macro is the BFD architecture to pass to `bfd_set_arch_mach'. */
|
|
|
|
#define TARGET_MACH 0
|
|
/* This macro is the BFD machine number to pass to
|
|
`bfd_set_arch_mach'. If it is not defined, GAS will use 0. */
|
|
|
|
#define TARGET_BYTES_BIG_ENDIAN 0
|
|
/* You should define this macro to be non-zero if the target is big
|
|
endian, and zero if the target is little endian. */
|
|
|
|
#define ONLY_STANDARD_ESCAPES
|
|
/* If you define this macro, GAS will warn about the use of
|
|
nonstandard escape sequences in a string. */
|
|
|
|
#define md_operand(x)
|
|
/* GAS will call this function for any expression that can not be
|
|
recognized. When the function is called, `input_line_pointer'
|
|
will point to the start of the expression. */
|
|
|
|
#define md_number_to_chars number_to_chars_littleendian
|
|
/* This should just call either `number_to_chars_bigendian' or
|
|
`number_to_chars_littleendian', whichever is appropriate. On
|
|
targets like the MIPS which support options to change the
|
|
endianness, which function to call is a runtime decision. On
|
|
other targets, `md_number_to_chars' can be a simple macro. */
|
|
|
|
#define WORKING_DOT_WORD
|
|
/*
|
|
`md_short_jump_size'
|
|
`md_long_jump_size'
|
|
`md_create_short_jump'
|
|
`md_create_long_jump'
|
|
If `WORKING_DOT_WORD' is defined, GAS will not do broken word
|
|
processing (*note Broken words::.). Otherwise, you should set
|
|
`md_short_jump_size' to the size of a short jump (a jump that is
|
|
just long enough to jump around a long jmp) and
|
|
`md_long_jump_size' to the size of a long jump (a jump that can go
|
|
anywhere in the function), You should define
|
|
`md_create_short_jump' to create a short jump around a long jump,
|
|
and define `md_create_long_jump' to create a long jump. */
|
|
|
|
#define MD_APPLY_FIX3
|
|
/* Values passed to md_apply_fix don't include symbol values. */
|
|
#define MD_APPLY_SYM_VALUE(FIX) 0
|
|
|
|
#define TC_HANDLES_FX_DONE
|
|
|
|
#undef RELOC_EXPANSION_POSSIBLE
|
|
/* If you define this macro, it means that `tc_gen_reloc' may return
|
|
multiple relocation entries for a single fixup. In this case, the
|
|
return value of `tc_gen_reloc' is a pointer to a null terminated
|
|
array. */
|
|
|
|
#define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section(FIXP, SEC)
|
|
/* If you define this macro, it should return the offset between the
|
|
address of a PC relative fixup and the position from which the PC
|
|
relative adjustment should be made. On many processors, the base
|
|
of a PC relative instruction is the next instruction, so this
|
|
macro would return the length of an instruction. */
|
|
|
|
#define LISTING_WORD_SIZE 2
|
|
/* The number of bytes to put into a word in a listing. This affects
|
|
the way the bytes are clumped together in the listing. For
|
|
example, a value of 2 might print `1234 5678' where a value of 1
|
|
would print `12 34 56 78'. The default value is 4. */
|
|
|
|
/* Support symbols like: C$$IO$$. */
|
|
#undef LEX_DOLLAR
|
|
#define LEX_DOLLAR 1
|
|
|
|
#define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) (P2VAR) = 0
|
|
/* An `.lcomm' directive with no explicit alignment parameter will
|
|
use this macro to set P2VAR to the alignment that a request for
|
|
SIZE bytes will have. The alignment is expressed as a power of
|
|
two. If no alignment should take place, the macro definition
|
|
should do nothing. Some targets define a `.bss' directive that is
|
|
also affected by this macro. The default definition will set
|
|
P2VAR to the truncated power of two of sizes up to eight bytes. */
|
|
|
|
#define md_relax_frag(SEG, FRAGP, STRETCH) \
|
|
msp430_relax_frag (SEG, FRAGP, STRETCH)
|
|
extern long msp430_relax_frag (segT, fragS *, long);
|
|
|
|
#define TC_FORCE_RELOCATION_LOCAL(FIX) \
|
|
(GENERIC_FORCE_RELOCATION_LOCAL (FIX) \
|
|
|| msp430_force_relocation_local (FIX))
|
|
extern int msp430_force_relocation_local (struct fix *);
|
|
|
|
/* We need to add reference symbols for .data/.bss. */
|
|
#define tc_frob_section(sec) msp430_frob_section (sec)
|
|
extern void msp430_frob_section (asection *);
|
|
|
|
extern int msp430_enable_relax;
|
|
extern int msp430_enable_polys;
|
|
|
|
#define tc_fix_adjustable(FIX) msp430_fix_adjustable (FIX)
|
|
extern bool msp430_fix_adjustable (struct fix *);
|
|
|
|
/* Allow hexadecimal numbers with 'h' suffix. Note that if the number
|
|
starts with a letter it will be interpreted as a symbol name not a
|
|
constant. Thus "beach" is a symbol not the hex value 0xbeac. So
|
|
is A5A5h... */
|
|
#define NUMBERS_WITH_SUFFIX 1
|
|
|
|
#define md_end msp430_md_end
|
|
extern void msp430_md_end (void);
|
|
|
|
/* Do not allow call frame debug info optimization as otherwise we could
|
|
generate the DWARF directives without the relocs necessary to patch
|
|
them up. */
|
|
#define md_allow_eh_opt 0
|
|
|
|
/* The difference between same-section symbols may be affected by linker
|
|
relaxation, so do not resolve such expressions in the assembler. */
|
|
#define md_allow_local_subtract(l,r,s) msp430_allow_local_subtract (l, r, s)
|
|
extern bool msp430_allow_local_subtract (expressionS *, expressionS *, segT);
|
|
|
|
#define RELOC_EXPANSION_POSSIBLE
|
|
#define MAX_RELOC_EXPANSION 2
|
|
|
|
#define DIFF_EXPR_OK
|
|
|
|
/* Do not adjust relocations involving symbols in code sections,
|
|
because it breaks linker relaxations. This could be fixed in the
|
|
linker, but this fix is simpler, and it pretty much only affects
|
|
object size a little bit. */
|
|
#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC) \
|
|
(GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEC) \
|
|
|| ((SEC)->flags & SEC_CODE) != 0 \
|
|
|| ((SEC)->flags & SEC_DEBUGGING) != 0 \
|
|
|| TC_FORCE_RELOCATION (FIX))
|
|
|
|
/* We validate subtract arguments within tc_gen_reloc(),
|
|
so don't report errors at this point. */
|
|
#define TC_VALIDATE_FIX_SUB(FIX, SEG) 1
|
|
|
|
#define DWARF2_USE_FIXED_ADVANCE_PC 1
|
|
|
|
#define TC_LINKRELAX_FIXUP(seg) ((seg->flags & SEC_CODE) || (seg->flags & SEC_DEBUGGING))
|
|
|
|
#define DWARF2_ADDR_SIZE(bfd) 4
|