1252 lines
33 KiB
C
1252 lines
33 KiB
C
/* tc-avr.c -- Assembler code for the ATMEL AVR
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Copyright (C) 1999, 2000 Free Software Foundation, Inc.
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Contributed by Denis Chertykov <denisc@overta.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 2, 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
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <stdio.h>
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#include <ctype.h>
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#include "as.h"
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#include "subsegs.h"
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const char comment_chars[] = ";";
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const char line_comment_chars[] = "#";
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const char line_separator_chars[] = "$";
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#define AVR_ISA_1200 1
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#define AVR_ISA_2xxx 3
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#define AVR_ISA_MEGA_x03 0x17
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#define AVR_ISA_MEGA 0x10
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#define AVR_ISA_MEGA_161 0x1b
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const char *md_shortopts = "m:";
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struct mcu_type_s
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{
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char *name;
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int isa;
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int mach;
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};
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static struct mcu_type_s mcu_types[] =
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{
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{"avr1", AVR_ISA_1200, bfd_mach_avr1},
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{"avr2", AVR_ISA_2xxx, bfd_mach_avr2},
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{"avr3", AVR_ISA_MEGA_x03, bfd_mach_avr3},
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{"avr4", AVR_ISA_MEGA_161, bfd_mach_avr4},
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{"at90s1200", AVR_ISA_1200, bfd_mach_avr1},
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{"at90s2313", AVR_ISA_2xxx, bfd_mach_avr2},
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{"at90s2323", AVR_ISA_2xxx, bfd_mach_avr2},
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{"at90s2333", AVR_ISA_2xxx, bfd_mach_avr2},
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{"attiny22" , AVR_ISA_2xxx, bfd_mach_avr2},
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{"at90s2343", AVR_ISA_2xxx, bfd_mach_avr2},
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{"at90s4433", AVR_ISA_2xxx, bfd_mach_avr2},
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{"at90s4414", AVR_ISA_2xxx, bfd_mach_avr2},
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{"at90s4434", AVR_ISA_2xxx, bfd_mach_avr2},
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{"at90s8515", AVR_ISA_2xxx, bfd_mach_avr2},
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{"at90s8535", AVR_ISA_2xxx, bfd_mach_avr2},
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{"atmega603", AVR_ISA_MEGA_x03, bfd_mach_avr3},
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{"atmega103", AVR_ISA_MEGA_x03, bfd_mach_avr3},
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{"atmega161", AVR_ISA_MEGA_161, bfd_mach_avr4},
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{NULL, 0, 0}
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};
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/* Current MCU type. */
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static struct mcu_type_s default_mcu = {"avr2", AVR_ISA_2xxx,bfd_mach_avr2};
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static struct mcu_type_s *avr_mcu = &default_mcu;
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const char EXP_CHARS[] = "eE";
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const char FLT_CHARS[] = "dD";
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static void avr_set_arch (int dummy);
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/* The target specific pseudo-ops which we support. */
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const pseudo_typeS md_pseudo_table[] =
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{
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{"arch", avr_set_arch, 0},
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{ NULL, NULL, 0}
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};
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#define LDI_IMMEDIATE(x) (((x) & 0xf) | (((x) << 4) & 0xf00))
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#define REGISTER_P(x) ((x) == 'r' || (x) == 'd' || (x) == 'w')
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struct avr_opcodes_s
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{
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char *name;
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char *constraints;
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char *opcode;
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int insn_size; /* in words */
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int isa;
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unsigned int bin_opcode;
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};
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static char * skip_space (char * s);
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static char * extract_word (char *from, char *to, int limit);
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static unsigned int avr_operand (struct avr_opcodes_s *opcode,
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int where, char *op, char **line);
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static unsigned int avr_operands (struct avr_opcodes_s *opcode, char **line);
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static unsigned int avr_get_constant (char * str, unsigned int max);
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static char *parse_exp (char *s, expressionS * op);
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static bfd_reloc_code_real_type avr_ldi_expression (expressionS *exp);
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long md_pcrel_from_section PARAMS ((fixS *, segT));
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/* constraint letters
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r - any register
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d - `ldi' register (r16-r31)
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M - immediate value from 0 to 255
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n - immediate value from 0 to 255 ( n = ~M ). Relocation impossible
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w - `adiw' register (r24,r26,r28,r30)
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s - immediate value from 0 to 7
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P - Port address value from 0 to 64. (in, out)
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p - Port address value from 0 to 32. (cbi, sbi, sbic, sbis)
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K - immediate value from 0 to 64 (used in `adiw', `sbiw')
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e - pointer regegisters (X,Y,Z)
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b - base pointer register and displacement ([YZ]+disp)
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i - immediate value
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l - signed pc relative offset from -64 to 63
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L - signed pc relative offset from -2048 to 2047
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h - absolut code address (call, jmp)
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S - immediate value from 0 to 7 (S = s << 4)
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*/
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struct avr_opcodes_s avr_opcodes[] =
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{
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{"adc", "r,r", "000111rdddddrrrr", 1, AVR_ISA_1200, 0x1c00},
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{"add", "r,r", "000011rdddddrrrr", 1, AVR_ISA_1200, 0x0c00},
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{"and", "r,r", "001000rdddddrrrr", 1, AVR_ISA_1200, 0x2000},
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{"cp", "r,r", "000101rdddddrrrr", 1, AVR_ISA_1200, 0x1400},
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{"cpc", "r,r", "000001rdddddrrrr", 1, AVR_ISA_1200, 0x0400},
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{"cpse", "r,r", "000100rdddddrrrr", 1, AVR_ISA_1200, 0x1000},
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{"eor", "r,r", "001001rdddddrrrr", 1, AVR_ISA_1200, 0x2400},
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{"mov", "r,r", "001011rdddddrrrr", 1, AVR_ISA_1200, 0x2c00},
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{"mul", "r,r", "100111rdddddrrrr", 1, AVR_ISA_MEGA_161, 0x9c00},
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{"or", "r,r", "001010rdddddrrrr", 1, AVR_ISA_1200, 0x2800},
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{"sbc", "r,r", "000010rdddddrrrr", 1, AVR_ISA_1200, 0x0800},
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{"sub", "r,r", "000110rdddddrrrr", 1, AVR_ISA_1200, 0x1800},
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{"clr", "r=r", "001001rdddddrrrr", 1, AVR_ISA_1200, 0x2400},
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{"lsl", "r=r", "000011rdddddrrrr", 1, AVR_ISA_1200, 0x0c00},
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{"rol", "r=r", "000111rdddddrrrr", 1, AVR_ISA_1200, 0x1c00},
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{"tst", "r=r", "001000rdddddrrrr", 1, AVR_ISA_1200, 0x2000},
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{"andi", "d,M", "0111KKKKddddKKKK", 1, AVR_ISA_1200, 0x7000},
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/*XXX special case*/
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{"cbr", "d,n", "0111KKKKddddKKKK", 1, AVR_ISA_1200, 0x7000},
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{"cpi", "d,M", "0011KKKKddddKKKK", 1, AVR_ISA_1200, 0x3000},
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{"ldi", "d,M", "1110KKKKddddKKKK", 1, AVR_ISA_1200, 0xe000},
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{"ori", "d,M", "0110KKKKddddKKKK", 1, AVR_ISA_1200, 0x6000},
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{"sbci", "d,M", "0100KKKKddddKKKK", 1, AVR_ISA_1200, 0x4000},
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{"sbr", "d,M", "0110KKKKddddKKKK", 1, AVR_ISA_1200, 0x6000},
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{"subi", "d,M", "0101KKKKddddKKKK", 1, AVR_ISA_1200, 0x5000},
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{"sbrc", "r,s", "1111110rrrrr0sss", 1, AVR_ISA_1200, 0xfc00},
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{"sbrs", "r,s", "1111111rrrrr0sss", 1, AVR_ISA_1200, 0xfe00},
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{"bld", "r,s", "1111100ddddd0sss", 1, AVR_ISA_1200, 0xf800},
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{"bst", "r,s", "1111101ddddd0sss", 1, AVR_ISA_1200, 0xfa00},
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{"in", "r,P", "10110PPdddddPPPP", 1, AVR_ISA_1200, 0xb000},
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{"out", "P,r", "10111PPrrrrrPPPP", 1, AVR_ISA_1200, 0xb800},
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{"adiw", "w,K", "10010110KKddKKKK", 1, AVR_ISA_2xxx, 0x9600},
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{"sbiw", "w,K", "10010111KKddKKKK", 1, AVR_ISA_2xxx, 0x9700},
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{"cbi", "p,s", "10011000pppppsss", 1, AVR_ISA_1200, 0x9800},
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{"sbi", "p,s", "10011010pppppsss", 1, AVR_ISA_1200, 0x9a00},
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{"sbic", "p,s", "10011001pppppsss", 1, AVR_ISA_1200, 0x9900},
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{"sbis", "p,s", "10011011pppppsss", 1, AVR_ISA_1200, 0x9b00},
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/* ee = {X=11,Y=10,Z=00, 0} */
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{"ld", "r,e", "100!000dddddee-+", 1, AVR_ISA_2xxx, 0x8000},
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{"st", "e,r", "100!001rrrrree-+", 1, AVR_ISA_2xxx, 0x8200},
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{"ldd", "r,b", "10o0oo0dddddbooo", 1, AVR_ISA_2xxx, 0x8000},
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{"std", "b,r", "10o0oo1rrrrrbooo", 1, AVR_ISA_2xxx, 0x8200},
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{"sts", "i,r", "1001001ddddd0000", 2, AVR_ISA_2xxx, 0x9200},
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{"lds", "r,i", "1001000ddddd0000", 2, AVR_ISA_2xxx, 0x9000},
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{"brbc", "s,l", "111101lllllllsss", 1, AVR_ISA_1200, 0xf400},
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{"brbs", "s,l", "111100lllllllsss", 1, AVR_ISA_1200, 0xf000},
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{"brcc", "l", "111101lllllll000", 1, AVR_ISA_1200, 0xf400},
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{"brcs", "l", "111100lllllll000", 1, AVR_ISA_1200, 0xf000},
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{"breq", "l", "111100lllllll001", 1, AVR_ISA_1200, 0xf001},
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{"brge", "l", "111101lllllll100", 1, AVR_ISA_1200, 0xf404},
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{"brhc", "l", "111101lllllll101", 1, AVR_ISA_1200, 0xf405},
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{"brhs", "l", "111100lllllll101", 1, AVR_ISA_1200, 0xf005},
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{"brid", "l", "111101lllllll111", 1, AVR_ISA_1200, 0xf407},
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{"brie", "l", "111100lllllll111", 1, AVR_ISA_1200, 0xf007},
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{"brlo", "l", "111100lllllll000", 1, AVR_ISA_1200, 0xf000},
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{"brlt", "l", "111100lllllll100", 1, AVR_ISA_1200, 0xf004},
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{"brmi", "l", "111100lllllll010", 1, AVR_ISA_1200, 0xf002},
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{"brne", "l", "111101lllllll001", 1, AVR_ISA_1200, 0xf401},
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{"brpl", "l", "111101lllllll010", 1, AVR_ISA_1200, 0xf402},
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{"brsh", "l", "111101lllllll000", 1, AVR_ISA_1200, 0xf400},
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{"brtc", "l", "111101lllllll110", 1, AVR_ISA_1200, 0xf406},
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{"brts", "l", "111100lllllll110", 1, AVR_ISA_1200, 0xf006},
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{"brvc", "l", "111101lllllll011", 1, AVR_ISA_1200, 0xf403},
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{"brvs", "l", "111100lllllll011", 1, AVR_ISA_1200, 0xf003},
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{"rcall", "L", "1101LLLLLLLLLLLL", 1, AVR_ISA_1200, 0xd000},
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{"rjmp", "L", "1100LLLLLLLLLLLL", 1, AVR_ISA_1200, 0xc000},
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{"call", "h", "1001010hhhhh111h", 2, AVR_ISA_MEGA, 0x940e},
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{"jmp", "h", "1001010hhhhh110h", 2, AVR_ISA_MEGA, 0x940c},
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{"asr", "r", "1001010rrrrr0101", 1, AVR_ISA_1200, 0x9405},
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{"com", "r", "1001010rrrrr0000", 1, AVR_ISA_1200, 0x9400},
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{"dec", "r", "1001010rrrrr1010", 1, AVR_ISA_1200, 0x940a},
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{"inc", "r", "1001010rrrrr0011", 1, AVR_ISA_1200, 0x9403},
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{"lsr", "r", "1001010rrrrr0110", 1, AVR_ISA_1200, 0x9406},
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{"neg", "r", "1001010rrrrr0001", 1, AVR_ISA_1200, 0x9401},
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{"pop", "r", "1001000rrrrr1111", 1, AVR_ISA_2xxx, 0x900f},
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{"push", "r", "1001001rrrrr1111", 1, AVR_ISA_2xxx, 0x920f},
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{"ror", "r", "1001010rrrrr0111", 1, AVR_ISA_1200, 0x9407},
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{"ser", "d", "11101111dddd1111", 1, AVR_ISA_1200, 0xef0f},
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{"swap", "r", "1001010rrrrr0010", 1, AVR_ISA_1200, 0x9402},
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{"bclr", "S", "100101001SSS1000", 1, AVR_ISA_1200, 0x9488},
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{"bset", "S", "100101000SSS1000", 1, AVR_ISA_1200, 0x9408},
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{"clc", "", "1001010010001000", 1, AVR_ISA_1200, 0x9488},
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{"clh", "", "1001010011011000", 1, AVR_ISA_1200, 0x94d8},
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{"cli", "", "1001010011111000", 1, AVR_ISA_1200, 0x94f8},
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{"cln", "", "1001010010101000", 1, AVR_ISA_1200, 0x94a8},
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{"cls", "", "1001010011001000", 1, AVR_ISA_1200, 0x94c8},
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{"clt", "", "1001010011101000", 1, AVR_ISA_1200, 0x94e8},
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{"clv", "", "1001010010111000", 1, AVR_ISA_1200, 0x94b8},
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{"clz", "", "1001010010011000", 1, AVR_ISA_1200, 0x9498},
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{"icall","", "1001010100001001", 1, AVR_ISA_2xxx, 0x9509},
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{"ijmp", "", "1001010000001001", 1, AVR_ISA_2xxx, 0x9409},
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{"lpm", "", "1001010111001000", 1, AVR_ISA_2xxx, 0x95c8},
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{"nop", "", "0000000000000000", 1, AVR_ISA_1200, 0x0000},
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{"ret", "", "1001010100001000", 1, AVR_ISA_1200, 0x9508},
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{"reti", "", "1001010100011000", 1, AVR_ISA_1200, 0x9518},
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{"sec", "", "1001010000001000", 1, AVR_ISA_1200, 0x9408},
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{"seh", "", "1001010001011000", 1, AVR_ISA_1200, 0x9458},
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{"sei", "", "1001010001111000", 1, AVR_ISA_1200, 0x9478},
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{"sen", "", "1001010000101000", 1, AVR_ISA_1200, 0x9428},
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{"ses", "", "1001010001001000", 1, AVR_ISA_1200, 0x9448},
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{"set", "", "1001010001101000", 1, AVR_ISA_1200, 0x9468},
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{"sev", "", "1001010000111000", 1, AVR_ISA_1200, 0x9438},
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{"sez", "", "1001010000011000", 1, AVR_ISA_1200, 0x9418},
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{"sleep","", "1001010110001000", 1, AVR_ISA_1200, 0x9588},
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{"wdr", "", "1001010110101000", 1, AVR_ISA_1200, 0x95a8},
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{"elpm", "", "1001010111011000", 1, AVR_ISA_MEGA_x03, 0x95d8},
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{NULL, NULL, NULL, 0, 0, 0}
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};
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#define EXP_MOD_NAME(i) exp_mod[i].name
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#define EXP_MOD_RELOC(i) exp_mod[i].reloc
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#define EXP_MOD_NEG_RELOC(i) exp_mod[i].neg_reloc
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#define HAVE_PM_P(i) exp_mod[i].have_pm
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struct exp_mod_s
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{
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char * name;
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bfd_reloc_code_real_type reloc;
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bfd_reloc_code_real_type neg_reloc;
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int have_pm;
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};
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static struct exp_mod_s exp_mod[] = {
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{"hh8", BFD_RELOC_AVR_HH8_LDI, BFD_RELOC_AVR_HH8_LDI_NEG, 1},
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{"pm_hh8", BFD_RELOC_AVR_HH8_LDI_PM, BFD_RELOC_AVR_HH8_LDI_PM_NEG, 0},
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{"hi8", BFD_RELOC_AVR_HI8_LDI, BFD_RELOC_AVR_HI8_LDI_NEG, 1},
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{"pm_hi8", BFD_RELOC_AVR_HI8_LDI_PM, BFD_RELOC_AVR_HI8_LDI_PM_NEG, 0},
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{"lo8", BFD_RELOC_AVR_LO8_LDI, BFD_RELOC_AVR_LO8_LDI_NEG, 1},
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{"pm_lo8", BFD_RELOC_AVR_LO8_LDI_PM, BFD_RELOC_AVR_LO8_LDI_PM_NEG, 0},
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{"hlo8", -BFD_RELOC_AVR_LO8_LDI, -BFD_RELOC_AVR_LO8_LDI_NEG, 0},
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{"hhi8", -BFD_RELOC_AVR_HI8_LDI, -BFD_RELOC_AVR_HI8_LDI_NEG, 0},
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};
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/* Opcode hash table. */
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static struct hash_control *avr_hash;
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/* Reloc modifiers hash control (hh8,hi8,lo8,pm_xx). */
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static struct hash_control *avr_mod_hash;
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#define OPTION_MMCU (OPTION_MD_BASE + 1)
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struct option md_longopts[] = {
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{"mmcu", required_argument, NULL, 'm'},
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{NULL, no_argument, NULL, 0}
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};
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size_t md_longopts_size = sizeof(md_longopts);
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static inline char *
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skip_space (s)
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char * s;
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{
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while (*s == ' ' || *s == '\t')
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++s;
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return s;
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}
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/* Extract one word from FROM and copy it to TO. */
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static char *
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extract_word (char *from, char *to, int limit)
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{
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char *op_start;
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char *op_end;
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int size = 0;
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/* Drop leading whitespace. */
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from = skip_space (from);
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*to = 0;
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/* Find the op code end. */
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for (op_start = op_end = from; *op_end != 0 && is_part_of_name(*op_end); )
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{
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to[size++] = *op_end++;
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if (size + 1 >= limit)
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break;
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}
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to[size] = 0;
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return op_end;
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}
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int
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md_estimate_size_before_relax (fragp, seg)
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fragS *fragp;
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asection *seg;
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{
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abort ();
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return 0;
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}
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void
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md_show_usage (stream)
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FILE *stream;
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{
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fprintf
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(stream,
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_ ("AVR options:\n"
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" -mmcu=[avr-name] select microcontroller variant\n"
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" [avr-name] can be:\n"
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" avr1 - AT90S1200\n"
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" 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;
|
|
}
|
|
}
|