ATMEL AVR microcontroller support.
diff --git a/gas/config/tc-avr.c b/gas/config/tc-avr.c
new file mode 100644
index 0000000..ea8008c
--- /dev/null
+++ b/gas/config/tc-avr.c
@@ -0,0 +1,1252 @@
+/* tc-avr.c -- Assembler code for the ATMEL AVR
+
+ Copyright (C) 1999, 2000 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 2, 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, 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <stdio.h>
+#include <ctype.h>
+#include "as.h"
+#include "subsegs.h"
+
+const char comment_chars[] = ";";
+const char line_comment_chars[] = "#";
+const char line_separator_chars[] = "$";
+
+#define AVR_ISA_1200 1
+#define AVR_ISA_2xxx 3
+#define AVR_ISA_MEGA_x03 0x17
+#define AVR_ISA_MEGA 0x10
+#define AVR_ISA_MEGA_161 0x1b
+
+const char *md_shortopts = "m:";
+struct mcu_type_s
+{
+ char *name;
+ int isa;
+ int mach;
+};
+
+static struct mcu_type_s mcu_types[] =
+{
+ {"avr1", AVR_ISA_1200, bfd_mach_avr1},
+ {"avr2", AVR_ISA_2xxx, bfd_mach_avr2},
+ {"avr3", AVR_ISA_MEGA_x03, bfd_mach_avr3},
+ {"avr4", AVR_ISA_MEGA_161, bfd_mach_avr4},
+ {"at90s1200", AVR_ISA_1200, bfd_mach_avr1},
+ {"at90s2313", AVR_ISA_2xxx, bfd_mach_avr2},
+ {"at90s2323", AVR_ISA_2xxx, bfd_mach_avr2},
+ {"at90s2333", AVR_ISA_2xxx, bfd_mach_avr2},
+ {"attiny22" , AVR_ISA_2xxx, bfd_mach_avr2},
+ {"at90s2343", AVR_ISA_2xxx, bfd_mach_avr2},
+ {"at90s4433", AVR_ISA_2xxx, bfd_mach_avr2},
+ {"at90s4414", AVR_ISA_2xxx, bfd_mach_avr2},
+ {"at90s4434", AVR_ISA_2xxx, bfd_mach_avr2},
+ {"at90s8515", AVR_ISA_2xxx, bfd_mach_avr2},
+ {"at90s8535", AVR_ISA_2xxx, bfd_mach_avr2},
+ {"atmega603", AVR_ISA_MEGA_x03, bfd_mach_avr3},
+ {"atmega103", AVR_ISA_MEGA_x03, bfd_mach_avr3},
+ {"atmega161", AVR_ISA_MEGA_161, bfd_mach_avr4},
+ {NULL, 0, 0}
+};
+
+
+/* Current MCU type. */
+static struct mcu_type_s default_mcu = {"avr2", AVR_ISA_2xxx,bfd_mach_avr2};
+static struct mcu_type_s *avr_mcu = &default_mcu;
+
+const char EXP_CHARS[] = "eE";
+const char FLT_CHARS[] = "dD";
+static void avr_set_arch (int dummy);
+
+/* The target specific pseudo-ops which we support. */
+const pseudo_typeS md_pseudo_table[] =
+{
+ {"arch", avr_set_arch, 0},
+ { NULL, NULL, 0}
+};
+
+#define LDI_IMMEDIATE(x) (((x) & 0xf) | (((x) << 4) & 0xf00))
+#define REGISTER_P(x) ((x) == 'r' || (x) == 'd' || (x) == 'w')
+
+struct avr_opcodes_s
+{
+ char *name;
+ char *constraints;
+ char *opcode;
+ int insn_size; /* in words */
+ int isa;
+ unsigned int bin_opcode;
+};
+
+static char * skip_space (char * s);
+static char * extract_word (char *from, char *to, int limit);
+static unsigned int avr_operand (struct avr_opcodes_s *opcode,
+ int where, char *op, char **line);
+static unsigned int avr_operands (struct avr_opcodes_s *opcode, char **line);
+static unsigned int avr_get_constant (char * str, unsigned int max);
+static char *parse_exp (char *s, expressionS * op);
+static bfd_reloc_code_real_type avr_ldi_expression (expressionS *exp);
+long md_pcrel_from_section PARAMS ((fixS *, segT));
+
+/* constraint letters
+ r - any register
+ d - `ldi' register (r16-r31)
+ M - immediate value from 0 to 255
+ n - immediate value from 0 to 255 ( n = ~M ). Relocation impossible
+ w - `adiw' register (r24,r26,r28,r30)
+ s - immediate value from 0 to 7
+ P - Port address value from 0 to 64. (in, out)
+ p - Port address value from 0 to 32. (cbi, sbi, sbic, sbis)
+ K - immediate value from 0 to 64 (used in `adiw', `sbiw')
+ e - pointer regegisters (X,Y,Z)
+ b - base pointer register and displacement ([YZ]+disp)
+ i - immediate value
+ l - signed pc relative offset from -64 to 63
+ L - signed pc relative offset from -2048 to 2047
+ h - absolut code address (call, jmp)
+ S - immediate value from 0 to 7 (S = s << 4)
+*/
+struct avr_opcodes_s avr_opcodes[] =
+{
+ {"adc", "r,r", "000111rdddddrrrr", 1, AVR_ISA_1200, 0x1c00},
+ {"add", "r,r", "000011rdddddrrrr", 1, AVR_ISA_1200, 0x0c00},
+ {"and", "r,r", "001000rdddddrrrr", 1, AVR_ISA_1200, 0x2000},
+ {"cp", "r,r", "000101rdddddrrrr", 1, AVR_ISA_1200, 0x1400},
+ {"cpc", "r,r", "000001rdddddrrrr", 1, AVR_ISA_1200, 0x0400},
+ {"cpse", "r,r", "000100rdddddrrrr", 1, AVR_ISA_1200, 0x1000},
+ {"eor", "r,r", "001001rdddddrrrr", 1, AVR_ISA_1200, 0x2400},
+ {"mov", "r,r", "001011rdddddrrrr", 1, AVR_ISA_1200, 0x2c00},
+ {"mul", "r,r", "100111rdddddrrrr", 1, AVR_ISA_MEGA_161, 0x9c00},
+ {"or", "r,r", "001010rdddddrrrr", 1, AVR_ISA_1200, 0x2800},
+ {"sbc", "r,r", "000010rdddddrrrr", 1, AVR_ISA_1200, 0x0800},
+ {"sub", "r,r", "000110rdddddrrrr", 1, AVR_ISA_1200, 0x1800},
+
+ {"clr", "r=r", "001001rdddddrrrr", 1, AVR_ISA_1200, 0x2400},
+ {"lsl", "r=r", "000011rdddddrrrr", 1, AVR_ISA_1200, 0x0c00},
+ {"rol", "r=r", "000111rdddddrrrr", 1, AVR_ISA_1200, 0x1c00},
+ {"tst", "r=r", "001000rdddddrrrr", 1, AVR_ISA_1200, 0x2000},
+
+ {"andi", "d,M", "0111KKKKddddKKKK", 1, AVR_ISA_1200, 0x7000},
+ /*XXX special case*/
+ {"cbr", "d,n", "0111KKKKddddKKKK", 1, AVR_ISA_1200, 0x7000},
+ {"cpi", "d,M", "0011KKKKddddKKKK", 1, AVR_ISA_1200, 0x3000},
+ {"ldi", "d,M", "1110KKKKddddKKKK", 1, AVR_ISA_1200, 0xe000},
+ {"ori", "d,M", "0110KKKKddddKKKK", 1, AVR_ISA_1200, 0x6000},
+ {"sbci", "d,M", "0100KKKKddddKKKK", 1, AVR_ISA_1200, 0x4000},
+ {"sbr", "d,M", "0110KKKKddddKKKK", 1, AVR_ISA_1200, 0x6000},
+ {"subi", "d,M", "0101KKKKddddKKKK", 1, AVR_ISA_1200, 0x5000},
+
+ {"sbrc", "r,s", "1111110rrrrr0sss", 1, AVR_ISA_1200, 0xfc00},
+ {"sbrs", "r,s", "1111111rrrrr0sss", 1, AVR_ISA_1200, 0xfe00},
+ {"bld", "r,s", "1111100ddddd0sss", 1, AVR_ISA_1200, 0xf800},
+ {"bst", "r,s", "1111101ddddd0sss", 1, AVR_ISA_1200, 0xfa00},
+
+ {"in", "r,P", "10110PPdddddPPPP", 1, AVR_ISA_1200, 0xb000},
+ {"out", "P,r", "10111PPrrrrrPPPP", 1, AVR_ISA_1200, 0xb800},
+
+ {"adiw", "w,K", "10010110KKddKKKK", 1, AVR_ISA_2xxx, 0x9600},
+ {"sbiw", "w,K", "10010111KKddKKKK", 1, AVR_ISA_2xxx, 0x9700},
+
+ {"cbi", "p,s", "10011000pppppsss", 1, AVR_ISA_1200, 0x9800},
+ {"sbi", "p,s", "10011010pppppsss", 1, AVR_ISA_1200, 0x9a00},
+ {"sbic", "p,s", "10011001pppppsss", 1, AVR_ISA_1200, 0x9900},
+ {"sbis", "p,s", "10011011pppppsss", 1, AVR_ISA_1200, 0x9b00},
+
+ /* ee = {X=11,Y=10,Z=00, 0} */
+ {"ld", "r,e", "100!000dddddee-+", 1, AVR_ISA_2xxx, 0x8000},
+ {"st", "e,r", "100!001rrrrree-+", 1, AVR_ISA_2xxx, 0x8200},
+ {"ldd", "r,b", "10o0oo0dddddbooo", 1, AVR_ISA_2xxx, 0x8000},
+ {"std", "b,r", "10o0oo1rrrrrbooo", 1, AVR_ISA_2xxx, 0x8200},
+ {"sts", "i,r", "1001001ddddd0000", 2, AVR_ISA_2xxx, 0x9200},
+ {"lds", "r,i", "1001000ddddd0000", 2, AVR_ISA_2xxx, 0x9000},
+
+ {"brbc", "s,l", "111101lllllllsss", 1, AVR_ISA_1200, 0xf400},
+ {"brbs", "s,l", "111100lllllllsss", 1, AVR_ISA_1200, 0xf000},
+
+ {"brcc", "l", "111101lllllll000", 1, AVR_ISA_1200, 0xf400},
+ {"brcs", "l", "111100lllllll000", 1, AVR_ISA_1200, 0xf000},
+ {"breq", "l", "111100lllllll001", 1, AVR_ISA_1200, 0xf001},
+ {"brge", "l", "111101lllllll100", 1, AVR_ISA_1200, 0xf404},
+ {"brhc", "l", "111101lllllll101", 1, AVR_ISA_1200, 0xf405},
+ {"brhs", "l", "111100lllllll101", 1, AVR_ISA_1200, 0xf005},
+ {"brid", "l", "111101lllllll111", 1, AVR_ISA_1200, 0xf407},
+ {"brie", "l", "111100lllllll111", 1, AVR_ISA_1200, 0xf007},
+ {"brlo", "l", "111100lllllll000", 1, AVR_ISA_1200, 0xf000},
+ {"brlt", "l", "111100lllllll100", 1, AVR_ISA_1200, 0xf004},
+ {"brmi", "l", "111100lllllll010", 1, AVR_ISA_1200, 0xf002},
+ {"brne", "l", "111101lllllll001", 1, AVR_ISA_1200, 0xf401},
+ {"brpl", "l", "111101lllllll010", 1, AVR_ISA_1200, 0xf402},
+ {"brsh", "l", "111101lllllll000", 1, AVR_ISA_1200, 0xf400},
+ {"brtc", "l", "111101lllllll110", 1, AVR_ISA_1200, 0xf406},
+ {"brts", "l", "111100lllllll110", 1, AVR_ISA_1200, 0xf006},
+ {"brvc", "l", "111101lllllll011", 1, AVR_ISA_1200, 0xf403},
+ {"brvs", "l", "111100lllllll011", 1, AVR_ISA_1200, 0xf003},
+
+ {"rcall", "L", "1101LLLLLLLLLLLL", 1, AVR_ISA_1200, 0xd000},
+ {"rjmp", "L", "1100LLLLLLLLLLLL", 1, AVR_ISA_1200, 0xc000},
+
+ {"call", "h", "1001010hhhhh111h", 2, AVR_ISA_MEGA, 0x940e},
+ {"jmp", "h", "1001010hhhhh110h", 2, AVR_ISA_MEGA, 0x940c},
+
+ {"asr", "r", "1001010rrrrr0101", 1, AVR_ISA_1200, 0x9405},
+ {"com", "r", "1001010rrrrr0000", 1, AVR_ISA_1200, 0x9400},
+ {"dec", "r", "1001010rrrrr1010", 1, AVR_ISA_1200, 0x940a},
+ {"inc", "r", "1001010rrrrr0011", 1, AVR_ISA_1200, 0x9403},
+ {"lsr", "r", "1001010rrrrr0110", 1, AVR_ISA_1200, 0x9406},
+ {"neg", "r", "1001010rrrrr0001", 1, AVR_ISA_1200, 0x9401},
+ {"pop", "r", "1001000rrrrr1111", 1, AVR_ISA_2xxx, 0x900f},
+ {"push", "r", "1001001rrrrr1111", 1, AVR_ISA_2xxx, 0x920f},
+ {"ror", "r", "1001010rrrrr0111", 1, AVR_ISA_1200, 0x9407},
+ {"ser", "d", "11101111dddd1111", 1, AVR_ISA_1200, 0xef0f},
+ {"swap", "r", "1001010rrrrr0010", 1, AVR_ISA_1200, 0x9402},
+
+ {"bclr", "S", "100101001SSS1000", 1, AVR_ISA_1200, 0x9488},
+ {"bset", "S", "100101000SSS1000", 1, AVR_ISA_1200, 0x9408},
+
+ {"clc", "", "1001010010001000", 1, AVR_ISA_1200, 0x9488},
+ {"clh", "", "1001010011011000", 1, AVR_ISA_1200, 0x94d8},
+ {"cli", "", "1001010011111000", 1, AVR_ISA_1200, 0x94f8},
+ {"cln", "", "1001010010101000", 1, AVR_ISA_1200, 0x94a8},
+ {"cls", "", "1001010011001000", 1, AVR_ISA_1200, 0x94c8},
+ {"clt", "", "1001010011101000", 1, AVR_ISA_1200, 0x94e8},
+ {"clv", "", "1001010010111000", 1, AVR_ISA_1200, 0x94b8},
+ {"clz", "", "1001010010011000", 1, AVR_ISA_1200, 0x9498},
+ {"icall","", "1001010100001001", 1, AVR_ISA_2xxx, 0x9509},
+ {"ijmp", "", "1001010000001001", 1, AVR_ISA_2xxx, 0x9409},
+ {"lpm", "", "1001010111001000", 1, AVR_ISA_2xxx, 0x95c8},
+ {"nop", "", "0000000000000000", 1, AVR_ISA_1200, 0x0000},
+ {"ret", "", "1001010100001000", 1, AVR_ISA_1200, 0x9508},
+ {"reti", "", "1001010100011000", 1, AVR_ISA_1200, 0x9518},
+ {"sec", "", "1001010000001000", 1, AVR_ISA_1200, 0x9408},
+ {"seh", "", "1001010001011000", 1, AVR_ISA_1200, 0x9458},
+ {"sei", "", "1001010001111000", 1, AVR_ISA_1200, 0x9478},
+ {"sen", "", "1001010000101000", 1, AVR_ISA_1200, 0x9428},
+ {"ses", "", "1001010001001000", 1, AVR_ISA_1200, 0x9448},
+ {"set", "", "1001010001101000", 1, AVR_ISA_1200, 0x9468},
+ {"sev", "", "1001010000111000", 1, AVR_ISA_1200, 0x9438},
+ {"sez", "", "1001010000011000", 1, AVR_ISA_1200, 0x9418},
+ {"sleep","", "1001010110001000", 1, AVR_ISA_1200, 0x9588},
+ {"wdr", "", "1001010110101000", 1, AVR_ISA_1200, 0x95a8},
+ {"elpm", "", "1001010111011000", 1, AVR_ISA_MEGA_x03, 0x95d8},
+ {NULL, NULL, NULL, 0, 0, 0}
+};
+
+
+
+#define EXP_MOD_NAME(i) exp_mod[i].name
+#define EXP_MOD_RELOC(i) exp_mod[i].reloc
+#define EXP_MOD_NEG_RELOC(i) exp_mod[i].neg_reloc
+#define HAVE_PM_P(i) exp_mod[i].have_pm
+
+struct exp_mod_s
+{
+ char * name;
+ bfd_reloc_code_real_type reloc;
+ bfd_reloc_code_real_type neg_reloc;
+ int have_pm;
+};
+
+static struct exp_mod_s exp_mod[] = {
+ {"hh8", BFD_RELOC_AVR_HH8_LDI, BFD_RELOC_AVR_HH8_LDI_NEG, 1},
+ {"pm_hh8", BFD_RELOC_AVR_HH8_LDI_PM, BFD_RELOC_AVR_HH8_LDI_PM_NEG, 0},
+ {"hi8", BFD_RELOC_AVR_HI8_LDI, BFD_RELOC_AVR_HI8_LDI_NEG, 1},
+ {"pm_hi8", BFD_RELOC_AVR_HI8_LDI_PM, BFD_RELOC_AVR_HI8_LDI_PM_NEG, 0},
+ {"lo8", BFD_RELOC_AVR_LO8_LDI, BFD_RELOC_AVR_LO8_LDI_NEG, 1},
+ {"pm_lo8", BFD_RELOC_AVR_LO8_LDI_PM, BFD_RELOC_AVR_LO8_LDI_PM_NEG, 0},
+ {"hlo8", -BFD_RELOC_AVR_LO8_LDI, -BFD_RELOC_AVR_LO8_LDI_NEG, 0},
+ {"hhi8", -BFD_RELOC_AVR_HI8_LDI, -BFD_RELOC_AVR_HI8_LDI_NEG, 0},
+};
+
+/* Opcode hash table. */
+static struct hash_control *avr_hash;
+
+/* Reloc modifiers hash control (hh8,hi8,lo8,pm_xx). */
+static struct hash_control *avr_mod_hash;
+
+#define OPTION_MMCU (OPTION_MD_BASE + 1)
+
+struct option md_longopts[] = {
+ {"mmcu", required_argument, NULL, 'm'},
+ {NULL, no_argument, NULL, 0}
+};
+size_t md_longopts_size = sizeof(md_longopts);
+
+static inline char *
+skip_space (s)
+ char * s;
+{
+ while (*s == ' ' || *s == '\t')
+ ++s;
+ return s;
+}
+
+/* Extract one word from FROM and copy it to TO. */
+static char *
+extract_word (char *from, char *to, int limit)
+{
+ char *op_start;
+ char *op_end;
+ int size = 0;
+
+ /* Drop leading whitespace. */
+ from = skip_space (from);
+ *to = 0;
+ /* Find the op code end. */
+ for (op_start = op_end = from; *op_end != 0 && is_part_of_name(*op_end); )
+ {
+ to[size++] = *op_end++;
+ if (size + 1 >= limit)
+ break;
+ }
+ to[size] = 0;
+ return op_end;
+}
+
+int
+md_estimate_size_before_relax (fragp, seg)
+ fragS *fragp;
+ asection *seg;
+{
+ abort ();
+ return 0;
+}
+
+void
+md_show_usage (stream)
+ FILE *stream;
+{
+ fprintf
+ (stream,
+ _ ("AVR options:\n"
+ " -mmcu=[avr-name] select microcontroller variant\n"
+ " [avr-name] can be:\n"
+ " avr1 - AT90S1200\n"
+ " avr2 - AT90S2xxx, AT90S4xxx, AT90S85xx, ATtiny22\n"
+ " avr3 - ATmega103 or ATmega603\n"
+ " avr4 - ATmega161\n"
+ " or immediate microcontroller name.\n"));
+}
+
+static void
+avr_set_arch (dummy)
+ int dummy;
+{
+ char * str;
+ str = (char *)alloca (20);
+ input_line_pointer = extract_word (input_line_pointer, str, 20);
+ md_parse_option ('m', str);
+ bfd_set_arch_mach (stdoutput, TARGET_ARCH, avr_mcu->mach);
+}
+
+int
+md_parse_option (c, arg)
+ int c;
+ char *arg;
+{
+ char *t = alloca (strlen (arg) + 1);
+ char *s = t;
+ char *arg1 = arg;
+ do
+ *t = tolower (*arg1++);
+ while (*t++);
+
+ if (c == 'm')
+ {
+ int i;
+
+ for (i = 0; mcu_types[i].name; ++i)
+ if (strcmp (mcu_types[i].name, s) == 0)
+ break;
+
+ if (!mcu_types[i].name)
+ as_fatal (_ ("unknown MCU: %s\n"), arg);
+ if (avr_mcu == &default_mcu)
+ avr_mcu = &mcu_types[i];
+ else
+ as_fatal (_ ("redefinition of mcu type `%s'"), mcu_types[i].name);
+ return 1;
+ }
+ return 0;
+}
+
+symbolS *
+md_undefined_symbol (name)
+ char *name;
+{
+ return 0;
+}
+
+/* Convert a string pointed to by input_line_pointer into a floating point
+ constant of type `type', and store the appropriate bytes to `*litP'.
+ The number of LITTLENUMS emitted is stored in `*sizeP'. Returns NULL if
+ OK, or an error message otherwise. */
+char *
+md_atof (type, litP, sizeP)
+ int type;
+ char *litP;
+ int *sizeP;
+{
+ int prec;
+ LITTLENUM_TYPE words[4];
+ LITTLENUM_TYPE *wordP;
+ char *t;
+
+ switch (type)
+ {
+ case 'f':
+ prec = 2;
+ break;
+ case 'd':
+ prec = 4;
+ break;
+ default:
+ *sizeP = 0;
+ return _("bad call to md_atof");
+ }
+
+ t = atof_ieee (input_line_pointer, type, words);
+ if (t)
+ input_line_pointer = t;
+
+ *sizeP = prec * sizeof (LITTLENUM_TYPE);
+ /* This loop outputs the LITTLENUMs in REVERSE order. */
+ for (wordP = words + prec - 1; prec--;)
+ {
+ md_number_to_chars (litP, (valueT) (*wordP--), sizeof (LITTLENUM_TYPE));
+ litP += sizeof (LITTLENUM_TYPE);
+ }
+ return NULL;
+}
+
+void
+md_convert_frag (abfd, sec, fragP)
+ bfd *abfd;
+ asection *sec;
+ fragS *fragP;
+{
+ abort ();
+}
+
+
+void
+md_begin ()
+{
+ int i;
+ struct avr_opcodes_s *opcode;
+ avr_hash = hash_new();
+
+ /* Insert unique names into hash table. This hash table then provides a
+ quick index to the first opcode with a particular name in the opcode
+ table. */
+
+ for (opcode = avr_opcodes; opcode->name; opcode++)
+ hash_insert (avr_hash, opcode->name, (char *) opcode);
+
+ avr_mod_hash = hash_new ();
+
+ for (i = 0; i < sizeof (exp_mod) / sizeof (exp_mod[0]); ++i)
+ hash_insert (avr_mod_hash, EXP_MOD_NAME(i), (void*)(i+10));
+
+ for (i = 0; i < 32; i++)
+ {
+ char buf[5];
+
+ sprintf (buf, "r%d", i);
+ symbol_table_insert (symbol_new (buf, reg_section, i,
+ &zero_address_frag));
+ sprintf (buf, "R%d", i);
+ symbol_table_insert (symbol_new (buf, reg_section, i,
+ &zero_address_frag));
+ }
+
+ bfd_set_arch_mach (stdoutput, TARGET_ARCH, avr_mcu->mach);
+}
+
+
+static unsigned int
+avr_operands (opcode, line)
+ struct avr_opcodes_s *opcode;
+ char **line;
+{
+ char *op = opcode->constraints;
+ unsigned int bin = opcode->bin_opcode;
+ char *frag = frag_more (opcode->insn_size * 2);
+ char *str = *line;
+ int where = frag - frag_now->fr_literal;
+
+ /* Opcode have operands. */
+ if (*op)
+ {
+ unsigned int reg1 = 0;
+ unsigned int reg2 = 0;
+ int reg1_present = 0;
+ int reg2_present = 0;
+
+ /* Parse first operand. */
+ if (REGISTER_P (*op))
+ reg1_present = 1;
+ reg1 = avr_operand (opcode, where, op, &str);
+ ++op;
+
+ /* Parse second operand. */
+ if (*op)
+ {
+ if (*op == ',')
+ ++op;
+ if (*op == '=')
+ {
+ reg2 = reg1;
+ reg2_present = 1;
+ }
+ else
+ {
+ if (REGISTER_P (*op))
+ reg2_present = 1;
+
+ str = skip_space (str);
+ if (*str++ != ',')
+ as_bad (_ ("`,' required"));
+ str = skip_space (str);
+
+ reg2 = avr_operand (opcode, where, op, &str);
+
+ }
+ if (reg1_present && reg2_present)
+ reg2 = (reg2 & 0xf) | ((reg2 << 5) & 0x200);
+ else if (reg2_present)
+ reg2 <<= 4;
+ }
+ if (reg1_present)
+ reg1 <<= 4;
+ bin |= reg1 | reg2;
+ }
+ if (opcode->insn_size == 2)
+ {
+ bfd_putl32 ((bfd_vma)bin, frag);
+ }
+ else
+ {
+ bfd_putl16 ((bfd_vma)bin, frag);
+ }
+ *line = str;
+ return bin;
+}
+
+static unsigned int
+avr_get_constant (str, max)
+ char * str;
+ unsigned int max;
+{
+ expressionS ex;
+ str = skip_space (str);
+ input_line_pointer = str;
+ expression (&ex);
+
+ if (ex.X_op != O_constant)
+ as_bad (_("constant value required"));
+
+ if (ex.X_add_number > max)
+ as_bad (_("number must be less than %d"), max+1);
+ return ex.X_add_number;
+}
+
+static unsigned int
+avr_operand (opcode, where, op, line)
+ struct avr_opcodes_s *opcode;
+ int where;
+ char *op;
+ char **line;
+{
+ unsigned int op_mask = 0;
+ char *str = *line;
+ expressionS op_expr;
+
+ str = skip_space (str);
+ switch (*op)
+ {
+ /* Any register operand. */
+ case 'w':
+ case 'd':
+ case 'r':
+ {
+ char r_name[256];
+ str = extract_word (str, r_name, sizeof (r_name));
+ parse_exp (r_name, &op_expr);
+ if (op_expr.X_op == O_register)
+ {
+ op_mask = op_expr.X_add_number;
+ if (op_mask <= 31)
+ {
+ if (*op == 'd')
+ {
+ if (op_mask < 16)
+ as_bad (_ ("register number above 15 required"));
+ op_mask -= 16;
+ }
+ if (*op == 'w')
+ {
+ op_mask -= 24;
+ if (op_mask & 1 || op_mask > 6)
+ as_bad (_ ("register r24,r26,r28 or r30 required"));
+ op_mask >>= 1;
+ }
+ break;
+ }
+ }
+ as_bad (_ ("register required"));
+ }
+ break;
+
+ case 'e':
+ {
+ char c;
+ if (*str == '-')
+ {
+ str = skip_space (str+1);
+ op_mask = 0x1002;
+ }
+ c = tolower (*str);
+ if (c == 'x')
+ op_mask |= 0x100c;
+ else if (c == 'y')
+ op_mask |= 0x8;
+ else if (c != 'z')
+ as_bad (_ ("pointer register (X,Y or Z) required"));
+
+ str = skip_space (str+1);
+ if (*str == '+')
+ {
+ ++str;
+ if (op_mask & 2)
+ as_bad (_ ("cannot both predecrement and postincrement"));
+ op_mask |= 0x1001;
+ }
+ }
+ break;
+
+ case 'b':
+ {
+ char c = tolower (*str++);
+ if (c == 'y')
+ op_mask |= 0x8;
+ else if (c != 'z')
+ as_bad (_ ("pointer register (Y or Z) required"));
+ str = skip_space (str);
+ if (*str++ == '+')
+ {
+ unsigned int x;
+ x = avr_get_constant (str, 63);
+ str = input_line_pointer;
+ op_mask |= (x & 7) | ((x & (3 << 3)) << 7) | ((x & (1 << 5)) << 8);
+ }
+ }
+ break;
+
+ case 'h':
+ {
+ str = parse_exp (str, &op_expr);
+ fix_new_exp (frag_now, where, opcode->insn_size * 2,
+ &op_expr, false, BFD_RELOC_AVR_CALL);
+
+ }
+ break;
+
+ case 'L':
+ {
+ str = parse_exp (str, &op_expr);
+ fix_new_exp (frag_now, where, opcode->insn_size * 2,
+ &op_expr, true, BFD_RELOC_AVR_13_PCREL);
+
+ }
+ break;
+
+ case 'l':
+ {
+ str = parse_exp (str, &op_expr);
+ fix_new_exp (frag_now, where, opcode->insn_size * 2,
+ &op_expr, true, BFD_RELOC_AVR_7_PCREL);
+
+ }
+ break;
+
+ case 'i':
+ {
+ str = parse_exp (str, &op_expr);
+ fix_new_exp (frag_now, where+2, opcode->insn_size * 2,
+ &op_expr, false, BFD_RELOC_16);
+
+ }
+ break;
+
+ case 'M':
+ {
+ bfd_reloc_code_real_type r_type;
+ input_line_pointer = str;
+ r_type = avr_ldi_expression (&op_expr);
+ str = input_line_pointer;
+ fix_new_exp (frag_now, where, 3,
+ &op_expr, false, r_type);
+ }
+ break;
+
+ case 'n':
+ {
+ unsigned int x;
+ x = ~avr_get_constant (str, 255);
+ str = input_line_pointer;
+ op_mask |= (x & 0xf) | ((x << 4) & 0xf00);
+ }
+ break;
+
+ case 'K':
+ {
+ unsigned int x;
+ x = avr_get_constant (str, 63);
+ str = input_line_pointer;
+ op_mask |= (x & 0xf) | ((x & 0x30) << 2);
+ }
+ break;
+
+ case 'S':
+ case 's':
+ {
+ unsigned int x;
+ x = avr_get_constant (str, 7);
+ str = input_line_pointer;
+ if (*op == 'S')
+ x <<= 4;
+ op_mask |= x;
+ }
+ break;
+
+ case 'P':
+ {
+ unsigned int x;
+ x = avr_get_constant (str, 63);
+ str = input_line_pointer;
+ op_mask |= (x & 0xf) | ((x & 0x30) << 5);
+ }
+ break;
+
+ case 'p':
+ {
+ unsigned int x;
+ x = avr_get_constant (str, 31);
+ str = input_line_pointer;
+ op_mask |= x << 3;
+ }
+ break;
+ default:
+ as_bad (_ ("unknown constraint `%c'"), *op);
+ }
+ *line = str;
+ return op_mask;
+}
+
+/* GAS will call this function for each section at the end of the assembly,
+ to permit the CPU backend to adjust the alignment of a section. */
+valueT
+md_section_align (seg, addr)
+ asection *seg;
+ valueT addr;
+{
+ int align = bfd_get_section_alignment (stdoutput, seg);
+ return ((addr + (1 << align) - 1) & (-1 << align));
+}
+
+/* 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. */
+long
+md_pcrel_from_section (fixp, sec)
+ fixS *fixp;
+ segT sec;
+{
+ if (fixp->fx_addsy != (symbolS *)NULL
+ && (!S_IS_DEFINED (fixp->fx_addsy)
+ || (S_GET_SEGMENT (fixp->fx_addsy) != sec)))
+ return 0;
+ return fixp->fx_frag->fr_address + fixp->fx_where;
+}
+
+/* GAS will call this for each fixup. It should store the correct
+ value in the object file. */
+int
+md_apply_fix3 (fixp, valuep, seg)
+ fixS *fixp;
+ valueT *valuep;
+ segT seg;
+{
+ unsigned char *where;
+ unsigned long insn;
+ long value;
+
+ if (fixp->fx_addsy == (symbolS *) NULL)
+ {
+ value = *valuep;
+ fixp->fx_done = 1;
+ }
+ else if (fixp->fx_pcrel)
+ {
+ segT s = S_GET_SEGMENT (fixp->fx_addsy);
+ if (fixp->fx_addsy && (s == seg || s == absolute_section))
+ {
+ value = S_GET_VALUE (fixp->fx_addsy) + *valuep;
+ fixp->fx_done = 1;
+ }
+ else
+ value = *valuep;
+ }
+ else
+ {
+ value = fixp->fx_offset;
+ if (fixp->fx_subsy != (symbolS *) NULL)
+ {
+ if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
+ {
+ value -= S_GET_VALUE (fixp->fx_subsy);
+ fixp->fx_done = 1;
+ }
+ else
+ {
+ /* We don't actually support subtracting a symbol. */
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _ ("expression too complex"));
+ }
+ }
+ }
+ switch (fixp->fx_r_type)
+ {
+ default:
+ fixp->fx_no_overflow = 1;
+ break;
+ case BFD_RELOC_AVR_7_PCREL:
+ case BFD_RELOC_AVR_13_PCREL:
+ case BFD_RELOC_32:
+ case BFD_RELOC_16:
+ case BFD_RELOC_AVR_CALL:
+ break;
+ }
+
+ if (fixp->fx_done)
+ {
+ /* Fetch the instruction, insert the fully resolved operand
+ value, and stuff the instruction back again. */
+ where = fixp->fx_frag->fr_literal + fixp->fx_where;
+ insn = bfd_getl16 (where);
+
+ switch (fixp->fx_r_type)
+ {
+ case BFD_RELOC_AVR_7_PCREL:
+ if (value & 1)
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("odd address operand: %ld"), value);
+ /* Instruction addresses are always right-shifted by 1. */
+ value >>= 1;
+ --value; /* Correct PC. */
+ if (value < -64 || value > 63)
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("operand out of range: %ld"), value);
+ value = (value << 3) & 0x3f8;
+ bfd_putl16 ((bfd_vma) (value | insn), where);
+ break;
+
+ case BFD_RELOC_AVR_13_PCREL:
+ if (value & 1)
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("odd address operand: %ld"), value);
+ /* Instruction addresses are always right-shifted by 1. */
+ value >>= 1;
+ --value; /* Correct PC. */
+ /* XXX AT90S8515 must have WRAP here. */
+
+ if (value < -2048 || value > 2047)
+ {
+ if (avr_mcu->mach == bfd_mach_avr2)
+ {
+ if (value > 2047)
+ value -= 4096;
+ else
+ value += 4096;
+ }
+ else
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("operand out of range: %ld"), value);
+ }
+
+ value &= 0xfff;
+ bfd_putl16 ((bfd_vma) (value | insn), where);
+ break;
+
+ case BFD_RELOC_32:
+ bfd_putl16 ((bfd_vma) value, where);
+ break;
+
+ case BFD_RELOC_16:
+ bfd_putl16 ((bfd_vma) value, where);
+ break;
+
+ case BFD_RELOC_AVR_16_PM:
+ bfd_putl16 ((bfd_vma) (value>>1), where);
+ break;
+
+ case BFD_RELOC_AVR_LO8_LDI:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value), where);
+ break;
+
+ case -BFD_RELOC_AVR_LO8_LDI:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 16), where);
+ break;
+
+ case BFD_RELOC_AVR_HI8_LDI:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 8), where);
+ break;
+
+ case -BFD_RELOC_AVR_HI8_LDI:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 24), where);
+ break;
+
+ case BFD_RELOC_AVR_HH8_LDI:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 16), where);
+ break;
+
+ case BFD_RELOC_AVR_LO8_LDI_NEG:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value), where);
+ break;
+
+ case -BFD_RELOC_AVR_LO8_LDI_NEG:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 16), where);
+ break;
+
+ case BFD_RELOC_AVR_HI8_LDI_NEG:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 8), where);
+ break;
+
+ case -BFD_RELOC_AVR_HI8_LDI_NEG:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 24), where);
+ break;
+
+ case BFD_RELOC_AVR_HH8_LDI_NEG:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 16), where);
+ break;
+
+ case BFD_RELOC_AVR_LO8_LDI_PM:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 1), where);
+ break;
+
+ case BFD_RELOC_AVR_HI8_LDI_PM:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 9), where);
+ break;
+
+ case BFD_RELOC_AVR_HH8_LDI_PM:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 17), where);
+ break;
+
+ case BFD_RELOC_AVR_LO8_LDI_PM_NEG:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 1), where);
+ break;
+
+ case BFD_RELOC_AVR_HI8_LDI_PM_NEG:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 9), where);
+ break;
+
+ case BFD_RELOC_AVR_HH8_LDI_PM_NEG:
+ bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 17), where);
+ break;
+
+ case BFD_RELOC_AVR_CALL:
+ {
+ unsigned long x;
+ x = bfd_getl16 (where);
+ if (value & 1)
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("odd address operand: %ld"), value);
+ value >>= 1;
+ x |= ((value & 0x10000) | ((value << 3) & 0x1f00000)) >> 16;
+ bfd_putl16 ((bfd_vma) x, where);
+ bfd_putl16 ((bfd_vma) (value & 0xffff), where+2);
+ }
+ break;
+
+ default:
+ as_fatal ( _("line %d: unknown relocation type: 0x%x"),
+ fixp->fx_line, fixp->fx_r_type);
+ break;
+ }
+ }
+ else
+ {
+ switch (fixp->fx_r_type)
+ {
+ case -BFD_RELOC_AVR_HI8_LDI_NEG:
+ case -BFD_RELOC_AVR_HI8_LDI:
+ case -BFD_RELOC_AVR_LO8_LDI_NEG:
+ case -BFD_RELOC_AVR_LO8_LDI:
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("only constant expression allowed"));
+ fixp->fx_done = 1;
+ break;
+ default:
+ break;
+ }
+ fixp->fx_addnumber = value;
+ }
+ return 0;
+}
+
+
+/* A `BFD_ASSEMBLER' GAS will call this to generate a reloc. GAS
+ will pass the resulting reloc to `bfd_install_relocation'. This
+ currently works poorly, as `bfd_install_relocation' often does the
+ wrong thing, and instances of `tc_gen_reloc' have been written to
+ work around the problems, which in turns makes it difficult to fix
+ `bfd_install_relocation'. */
+
+/* If while processing a fixup, a reloc really needs to be created
+ then it is done here. */
+
+arelent *
+tc_gen_reloc (seg, fixp)
+ asection *seg;
+ fixS *fixp;
+{
+ arelent *reloc;
+
+ reloc = (arelent *) xmalloc (sizeof (arelent));
+
+ reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
+ *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
+
+ reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
+ reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
+ if (reloc->howto == (reloc_howto_type *) NULL)
+ {
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("reloc %d not supported by object file format"),
+ (int)fixp->fx_r_type);
+ return NULL;
+ }
+
+ if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT
+ || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
+ reloc->address = fixp->fx_offset;
+
+ reloc->addend = fixp->fx_offset;
+
+ return reloc;
+}
+
+
+void
+md_assemble (str)
+ char *str;
+{
+ struct avr_opcodes_s * opcode;
+ char op[11];
+
+ str = extract_word (str, op, sizeof(op));
+
+ if (!op[0])
+ as_bad (_ ("can't find opcode "));
+
+ opcode = (struct avr_opcodes_s *) hash_find (avr_hash, op);
+
+ if (opcode == NULL)
+ {
+ as_bad (_ ("unknown opcode `%s'"), op);
+ return;
+ }
+
+ if ((opcode->isa & avr_mcu->isa) != opcode->isa)
+ as_bad (_ ("illegal opcode %s for mcu %s"), opcode->name, avr_mcu->name);
+
+ /* We used to set input_line_pointer to the result of get_operands,
+ but that is wrong. Our caller assumes we don't change it. */
+ {
+ char *t = input_line_pointer;
+ avr_operands (opcode, &str);
+ if (*str)
+ as_bad (_ ("garbage at end of line"));
+ input_line_pointer = t;
+ }
+}
+
+/* Parse ordinary expression. */
+static char *
+parse_exp (s, op)
+ char *s;
+ expressionS * op;
+{
+ input_line_pointer = s;
+ expression (op);
+ if (op->X_op == O_absent)
+ as_bad (_("missing operand"));
+ return input_line_pointer;
+}
+
+
+/* Parse special expressions (needed for LDI command):
+ xx8 (address)
+ xx8 (-address)
+ pm_xx8 (address)
+ pm_xx8 (-address)
+ where xx is: hh, hi, lo
+*/
+static bfd_reloc_code_real_type
+avr_ldi_expression (exp)
+ expressionS *exp;
+{
+ char *str = input_line_pointer;
+ char *tmp;
+ char op[8];
+ int mod;
+ tmp = str;
+
+ str = extract_word (str, op, sizeof (op));
+ if (op[0])
+ {
+ mod = (int) hash_find (avr_mod_hash, op);
+ if (mod)
+ {
+ int closes = 0;
+ mod -= 10;
+ str = skip_space (str);
+ if (*str == '(')
+ {
+ int neg_p = 0;
+ ++str;
+ if (strncmp ("pm(", str, 3) == 0
+ || strncmp ("-(pm(", str, 5) == 0)
+ {
+ if (HAVE_PM_P(mod))
+ {
+ ++mod;
+ ++closes;
+ }
+ else
+ as_bad (_ ("illegal expression"));
+ if (*str == '-')
+ {
+ neg_p = 1;
+ ++closes;
+ str += 5;
+ }
+ else
+ str += 3;
+ }
+ if (*str == '-' && *(str + 1) == '(')
+ {
+ neg_p ^= 1;
+ ++closes;
+ str += 2;
+ }
+ input_line_pointer = str;
+ expression (exp);
+ do
+ {
+ if (*input_line_pointer != ')')
+ {
+ as_bad (_ ("`)' required"));
+ break;
+ }
+ input_line_pointer++;
+ }
+ while (closes--);
+ return neg_p ? EXP_MOD_NEG_RELOC (mod) : EXP_MOD_RELOC (mod);
+ }
+ }
+ }
+ input_line_pointer = tmp;
+ expression (exp);
+ return BFD_RELOC_AVR_LO8_LDI;
+}
+
+/* Flag to pass `pm' mode between `avr_parse_cons_expression' and
+ `avr_cons_fix_new' */
+static int exp_mod_pm = 0;
+
+/* Parse special CONS expression: pm (expression)
+ which is used for addressing to a program memory.
+ Relocation: BFD_RELOC_AVR_16_PM */
+void
+avr_parse_cons_expression (exp, nbytes)
+ expressionS *exp;
+ int nbytes;
+{
+ char * tmp;
+
+ exp_mod_pm = 0;
+
+ tmp = input_line_pointer = skip_space (input_line_pointer);
+
+ if (nbytes == 2)
+ {
+ char * pm_name = "pm";
+ int len = strlen (pm_name);
+ if (strncasecmp (input_line_pointer, pm_name, len) == 0)
+ {
+ input_line_pointer = skip_space (input_line_pointer + len);
+ if (*input_line_pointer == '(')
+ {
+ input_line_pointer = skip_space (input_line_pointer + 1);
+ exp_mod_pm = 1;
+ expression (exp);
+ if (*input_line_pointer == ')')
+ ++input_line_pointer;
+ else
+ {
+ as_bad (_ ("`)' required"));
+ exp_mod_pm = 0;
+ }
+ return;
+ }
+ input_line_pointer = tmp;
+ }
+ }
+ expression (exp);
+}
+
+void
+avr_cons_fix_new(frag, where, nbytes, exp)
+ fragS *frag;
+ int where;
+ int nbytes;
+ expressionS *exp;
+{
+ if (exp_mod_pm == 0)
+ {
+ if (nbytes == 2)
+ fix_new_exp (frag, where, nbytes, exp, false, BFD_RELOC_16);
+ else if (nbytes == 4)
+ fix_new_exp (frag, where, nbytes, exp, false, BFD_RELOC_32);
+ else
+ as_bad (_ ("illegal %srelocation size: %d"), "", nbytes);
+ }
+ else
+ {
+ if (nbytes == 2)
+ fix_new_exp (frag, where, nbytes, exp, false, BFD_RELOC_AVR_16_PM);
+ else
+ as_bad (_ ("illegal %srelocation size: %d"), "`pm' ", nbytes);
+ exp_mod_pm = 0;
+ }
+}
diff --git a/gas/config/tc-avr.h b/gas/config/tc-avr.h
new file mode 100644
index 0000000..2a8d3ee
--- /dev/null
+++ b/gas/config/tc-avr.h
@@ -0,0 +1,118 @@
+/* This file is tc-avr.h
+ Copyright (C) 1999, 2000 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 2, 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, 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
+
+#ifndef BFD_ASSEMBLER
+ #error AVR support requires BFD_ASSEMBLER
+#endif
+
+
+#define TC_AVR
+/* 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-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_ARCH bfd_arch_avr
+/* 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. */
+
+void avr_parse_cons_expression (expressionS *exp, int nbytes);
+
+#define TC_PARSE_CONS_EXPRESSION(EXPR,N) avr_parse_cons_expression (EXPR,N)
+/*
+ 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.*/
+
+void avr_cons_fix_new(fragS *frag,int where, int nbytes, expressionS *exp);
+
+#define TC_CONS_FIX_NEW(FRAG,WHERE,N,EXP) avr_cons_fix_new(FRAG,WHERE,N,EXP)
+/* You may define this macro to generate a fixup for a data
+ allocation pseudo-op. */
+
+#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
+
+#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. */
+
+#define LEX_DOLLAR 0
+/* AVR port uses `$' as a logical line separator */
