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Diffstat (limited to 'binutils-2.25/gas/config/tc-avr.h')
| -rw-r--r-- | binutils-2.25/gas/config/tc-avr.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/binutils-2.25/gas/config/tc-avr.h b/binutils-2.25/gas/config/tc-avr.h new file mode 100644 index 00000000..ee36e65b --- /dev/null +++ b/binutils-2.25/gas/config/tc-avr.h @@ -0,0 +1,173 @@ +/* This file is tc-avr.h + Copyright 1999, 2000, 2001, 2002, 2005, 2006, 2007 + Free Software Foundation, Inc. + + Contributed by Denis Chertykov <denisc@overta.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. */ + +/* 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 TC_AVR + +/* 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_FORMAT "elf32-avr" + +/* This macro is the BFD architecture to pass to `bfd_set_arch_mach'. */ +#define TARGET_ARCH bfd_arch_avr + +/* 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_MACH 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 TARGET_BYTES_BIG_ENDIAN 0 + +/* If you define this macro, GAS will warn about the use of + nonstandard escape sequences in a string. */ +#define ONLY_STANDARD_ESCAPES + +/* 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_operand(x) + +/* You may define this macro to parse an expression used in a data + allocation pseudo-op such as `.word'. You can use this to + recognize relocation directives that may appear in such directives. */ +#define TC_PARSE_CONS_EXPRESSION(EXPR,N) avr_parse_cons_expression (EXPR, N) +extern void avr_parse_cons_expression (expressionS *, int); + +/* You may define this macro to generate a fixup for a data + allocation pseudo-op. */ +#define TC_CONS_FIX_NEW(FRAG,WHERE,N,EXP) avr_cons_fix_new (FRAG, WHERE, N, EXP) +extern void avr_cons_fix_new (fragS *,int, int, expressionS *); + +/* 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 md_number_to_chars number_to_chars_littleendian + +/* `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 WORKING_DOT_WORD + +/* 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. */ +#undef RELOC_EXPANSION_POSSIBLE + +/* No shared lib support, so we don't need to ensure externally + visible symbols can be overridden. */ +#define EXTERN_FORCE_RELOC 0 + +/* Values passed to md_apply_fix don't include the symbol value. */ +#define MD_APPLY_SYM_VALUE(FIX) 0 + +/* 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 MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC) +extern long md_pcrel_from_section (struct fix *, segT); + +/* 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. */ +#define LISTING_WORD_SIZE 2 + +/* AVR port uses `$' as a logical line separator. */ +#define LEX_DOLLAR 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 TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) (P2VAR) = 0 + +/* We don't want gas to fixup the following program memory related relocations. + We will need them in case that we want to do linker relaxation. + We could in principle keep these fixups in gas when not relaxing. + However, there is no serious performance penalty when making the linker + make the fixup work. Check also that fx_addsy is not NULL, in order to make + sure that the fixup refers to some sort of label. */ +#define TC_VALIDATE_FIX(FIXP,SEG,SKIP) \ + if ( (FIXP->fx_r_type == BFD_RELOC_AVR_7_PCREL \ + || FIXP->fx_r_type == BFD_RELOC_AVR_13_PCREL \ + || FIXP->fx_r_type == BFD_RELOC_AVR_LO8_LDI_PM \ + || FIXP->fx_r_type == BFD_RELOC_AVR_LO8_LDI_GS \ + || FIXP->fx_r_type == BFD_RELOC_AVR_HI8_LDI_PM \ + || FIXP->fx_r_type == BFD_RELOC_AVR_HI8_LDI_GS \ + || FIXP->fx_r_type == BFD_RELOC_AVR_HH8_LDI_PM \ + || FIXP->fx_r_type == BFD_RELOC_AVR_LO8_LDI_PM_NEG \ + || FIXP->fx_r_type == BFD_RELOC_AVR_HI8_LDI_PM_NEG \ + || FIXP->fx_r_type == BFD_RELOC_AVR_HH8_LDI_PM_NEG \ + || FIXP->fx_r_type == BFD_RELOC_AVR_8_LO \ + || FIXP->fx_r_type == BFD_RELOC_AVR_8_HI \ + || FIXP->fx_r_type == BFD_RELOC_AVR_8_HLO \ + || FIXP->fx_r_type == BFD_RELOC_AVR_16_PM) \ + && FIXP->fx_addsy != NULL \ + && FIXP->fx_subsy == NULL) \ + { \ + symbol_mark_used_in_reloc (FIXP->fx_addsy); \ + goto SKIP; \ + } + +/* This target is buggy, and sets fix size too large. */ +#define TC_FX_SIZE_SLACK(FIX) 2 + +/* AVR instructions are 2 or 4 bytes long. */ +#define DWARF2_LINE_MIN_INSN_LENGTH 2 + +/* 32 bits pseudo-addresses are used on AVR. */ +#define DWARF2_ADDR_SIZE(bfd) 4 + +/* Enable cfi directives. */ +#define TARGET_USE_CFIPOP 1 + +/* The stack grows down, and is only byte aligned. */ +#define DWARF2_CIE_DATA_ALIGNMENT -1 + +/* Define the column that represents the PC. */ +#define DWARF2_DEFAULT_RETURN_COLUMN 36 + +/* Define a hook to setup initial CFI state. */ +extern void tc_cfi_frame_initial_instructions (void); +#define tc_cfi_frame_initial_instructions tc_cfi_frame_initial_instructions |