| /* tc-rl78.c -- Assembler for the Renesas RL78 |
| Copyright 2011-2013 Free Software Foundation, Inc. |
| |
| 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. */ |
| |
| #include "as.h" |
| #include "struc-symbol.h" |
| #include "obstack.h" |
| #include "safe-ctype.h" |
| #include "dwarf2dbg.h" |
| #include "libbfd.h" |
| #include "elf/common.h" |
| #include "elf/rl78.h" |
| #include "rl78-defs.h" |
| #include "filenames.h" |
| #include "listing.h" |
| #include "sb.h" |
| #include "macro.h" |
| |
| const char comment_chars[] = ";"; |
| /* Note that input_file.c hand checks for '#' at the beginning of the |
| first line of the input file. This is because the compiler outputs |
| #NO_APP at the beginning of its output. */ |
| const char line_comment_chars[] = "#"; |
| /* Use something that isn't going to be needed by any expressions or |
| other syntax. */ |
| const char line_separator_chars[] = "@"; |
| |
| const char EXP_CHARS[] = "eE"; |
| const char FLT_CHARS[] = "dD"; |
| |
| /* ELF flags to set in the output file header. */ |
| static int elf_flags = 0; |
| |
| /*------------------------------------------------------------------*/ |
| |
| char * rl78_lex_start; |
| char * rl78_lex_end; |
| |
| typedef struct rl78_bytesT |
| { |
| char prefix[1]; |
| int n_prefix; |
| char base[4]; |
| int n_base; |
| char ops[8]; |
| int n_ops; |
| struct |
| { |
| expressionS exp; |
| char offset; |
| char nbits; |
| char type; /* RL78REL_*. */ |
| int reloc; |
| fixS * fixP; |
| } fixups[2]; |
| int n_fixups; |
| struct |
| { |
| char type; |
| char field_pos; |
| char val_ofs; |
| } relax[2]; |
| int n_relax; |
| int link_relax; |
| fixS *link_relax_fixP; |
| char times_grown; |
| char times_shrank; |
| } rl78_bytesT; |
| |
| static rl78_bytesT rl78_bytes; |
| |
| void |
| rl78_linkrelax_addr16 (void) |
| { |
| rl78_bytes.link_relax |= RL78_RELAXA_ADDR16; |
| } |
| |
| void |
| rl78_linkrelax_branch (void) |
| { |
| rl78_bytes.link_relax |= RL78_RELAXA_BRA; |
| } |
| |
| static void |
| rl78_fixup (expressionS exp, int offsetbits, int nbits, int type) |
| { |
| rl78_bytes.fixups[rl78_bytes.n_fixups].exp = exp; |
| rl78_bytes.fixups[rl78_bytes.n_fixups].offset = offsetbits; |
| rl78_bytes.fixups[rl78_bytes.n_fixups].nbits = nbits; |
| rl78_bytes.fixups[rl78_bytes.n_fixups].type = type; |
| rl78_bytes.fixups[rl78_bytes.n_fixups].reloc = exp.X_md; |
| rl78_bytes.n_fixups ++; |
| } |
| |
| #define rl78_field_fixup(exp, offset, nbits, type) \ |
| rl78_fixup (exp, offset + 8 * rl78_bytes.n_prefix), nbits, type) |
| |
| #define rl78_op_fixup(exp, offset, nbits, type) \ |
| rl78_fixup (exp, offset + 8 * (rl78_bytes.n_prefix + rl78_bytes.n_base), nbits, type) |
| |
| void |
| rl78_prefix (int p) |
| { |
| rl78_bytes.prefix[0] = p; |
| rl78_bytes.n_prefix = 1; |
| } |
| |
| int |
| rl78_has_prefix () |
| { |
| return rl78_bytes.n_prefix; |
| } |
| |
| void |
| rl78_base1 (int b1) |
| { |
| rl78_bytes.base[0] = b1; |
| rl78_bytes.n_base = 1; |
| } |
| |
| void |
| rl78_base2 (int b1, int b2) |
| { |
| rl78_bytes.base[0] = b1; |
| rl78_bytes.base[1] = b2; |
| rl78_bytes.n_base = 2; |
| } |
| |
| void |
| rl78_base3 (int b1, int b2, int b3) |
| { |
| rl78_bytes.base[0] = b1; |
| rl78_bytes.base[1] = b2; |
| rl78_bytes.base[2] = b3; |
| rl78_bytes.n_base = 3; |
| } |
| |
| void |
| rl78_base4 (int b1, int b2, int b3, int b4) |
| { |
| rl78_bytes.base[0] = b1; |
| rl78_bytes.base[1] = b2; |
| rl78_bytes.base[2] = b3; |
| rl78_bytes.base[3] = b4; |
| rl78_bytes.n_base = 4; |
| } |
| |
| #define F_PRECISION 2 |
| |
| void |
| rl78_op (expressionS exp, int nbytes, int type) |
| { |
| int v = 0; |
| |
| if ((exp.X_op == O_constant || exp.X_op == O_big) |
| && type != RL78REL_PCREL) |
| { |
| if (exp.X_op == O_big && exp.X_add_number <= 0) |
| { |
| LITTLENUM_TYPE w[2]; |
| char * ip = rl78_bytes.ops + rl78_bytes.n_ops; |
| |
| gen_to_words (w, F_PRECISION, 8); |
| ip[3] = w[0] >> 8; |
| ip[2] = w[0]; |
| ip[1] = w[1] >> 8; |
| ip[0] = w[1]; |
| rl78_bytes.n_ops += 4; |
| } |
| else |
| { |
| v = exp.X_add_number; |
| while (nbytes) |
| { |
| rl78_bytes.ops[rl78_bytes.n_ops++] =v & 0xff; |
| v >>= 8; |
| nbytes --; |
| } |
| } |
| } |
| else |
| { |
| if (nbytes > 2 |
| && exp.X_md == BFD_RELOC_RL78_CODE) |
| exp.X_md = 0; |
| rl78_op_fixup (exp, rl78_bytes.n_ops * 8, nbytes * 8, type); |
| memset (rl78_bytes.ops + rl78_bytes.n_ops, 0, nbytes); |
| rl78_bytes.n_ops += nbytes; |
| } |
| } |
| |
| /* This gets complicated when the field spans bytes, because fields |
| are numbered from the MSB of the first byte as zero, and bits are |
| stored LSB towards the LSB of the byte. Thus, a simple four-bit |
| insertion of 12 at position 4 of 0x00 yields: 0x0b. A three-bit |
| insertion of b'MXL at position 7 is like this: |
| |
| - - - - - - - - - - - - - - - - |
| M X L */ |
| |
| void |
| rl78_field (int val, int pos, int sz) |
| { |
| int valm; |
| int bytep, bitp; |
| |
| if (sz > 0) |
| { |
| if (val < 0 || val >= (1 << sz)) |
| as_bad (_("Value %d doesn't fit in unsigned %d-bit field"), val, sz); |
| } |
| else |
| { |
| sz = - sz; |
| if (val < -(1 << (sz - 1)) || val >= (1 << (sz - 1))) |
| as_bad (_("Value %d doesn't fit in signed %d-bit field"), val, sz); |
| } |
| |
| /* This code points at 'M' in the above example. */ |
| bytep = pos / 8; |
| bitp = pos % 8; |
| |
| while (bitp + sz > 8) |
| { |
| int ssz = 8 - bitp; |
| int svalm; |
| |
| svalm = val >> (sz - ssz); |
| svalm = svalm & ((1 << ssz) - 1); |
| svalm = svalm << (8 - bitp - ssz); |
| gas_assert (bytep < rl78_bytes.n_base); |
| rl78_bytes.base[bytep] |= svalm; |
| |
| bitp = 0; |
| sz -= ssz; |
| bytep ++; |
| } |
| valm = val & ((1 << sz) - 1); |
| valm = valm << (8 - bitp - sz); |
| gas_assert (bytep < rl78_bytes.n_base); |
| rl78_bytes.base[bytep] |= valm; |
| } |
| |
| /*------------------------------------------------------------------*/ |
| |
| enum options |
| { |
| OPTION_RELAX = OPTION_MD_BASE, |
| OPTION_G10, |
| }; |
| |
| #define RL78_SHORTOPTS "" |
| const char * md_shortopts = RL78_SHORTOPTS; |
| |
| /* Assembler options. */ |
| struct option md_longopts[] = |
| { |
| {"relax", no_argument, NULL, OPTION_RELAX}, |
| {"mg10", no_argument, NULL, OPTION_G10}, |
| {NULL, no_argument, NULL, 0} |
| }; |
| size_t md_longopts_size = sizeof (md_longopts); |
| |
| int |
| md_parse_option (int c, char * arg ATTRIBUTE_UNUSED) |
| { |
| switch (c) |
| { |
| case OPTION_RELAX: |
| linkrelax = 1; |
| return 1; |
| |
| case OPTION_G10: |
| elf_flags |= E_FLAG_RL78_G10; |
| return 1; |
| } |
| return 0; |
| } |
| |
| void |
| md_show_usage (FILE * stream ATTRIBUTE_UNUSED) |
| { |
| } |
| |
| |
| static void |
| s_bss (int ignore ATTRIBUTE_UNUSED) |
| { |
| int temp; |
| |
| temp = get_absolute_expression (); |
| subseg_set (bss_section, (subsegT) temp); |
| demand_empty_rest_of_line (); |
| } |
| |
| /* The target specific pseudo-ops which we support. */ |
| const pseudo_typeS md_pseudo_table[] = |
| { |
| /* Our "standard" pseudos. */ |
| { "double", float_cons, 'd' }, |
| { "bss", s_bss, 0 }, |
| { "3byte", cons, 3 }, |
| { "int", cons, 4 }, |
| { "word", cons, 4 }, |
| |
| /* End of list marker. */ |
| { NULL, NULL, 0 } |
| }; |
| |
| void |
| md_begin (void) |
| { |
| } |
| |
| void |
| rl78_md_end (void) |
| { |
| } |
| |
| /* Set the ELF specific flags. */ |
| void |
| rl78_elf_final_processing (void) |
| { |
| elf_elfheader (stdoutput)->e_flags |= elf_flags; |
| } |
| |
| /* Write a value out to the object file, using the appropriate endianness. */ |
| void |
| md_number_to_chars (char * buf, valueT val, int n) |
| { |
| number_to_chars_littleendian (buf, val, n); |
| } |
| |
| static struct |
| { |
| char * fname; |
| int reloc; |
| } |
| reloc_functions[] = |
| { |
| { "code", BFD_RELOC_RL78_CODE }, |
| { "lo16", BFD_RELOC_RL78_LO16 }, |
| { "hi16", BFD_RELOC_RL78_HI16 }, |
| { "hi8", BFD_RELOC_RL78_HI8 }, |
| { 0, 0 } |
| }; |
| |
| void |
| md_operand (expressionS * exp ATTRIBUTE_UNUSED) |
| { |
| int reloc = 0; |
| int i; |
| |
| for (i = 0; reloc_functions[i].fname; i++) |
| { |
| int flen = strlen (reloc_functions[i].fname); |
| |
| if (input_line_pointer[0] == '%' |
| && strncasecmp (input_line_pointer + 1, reloc_functions[i].fname, flen) == 0 |
| && input_line_pointer[flen + 1] == '(') |
| { |
| reloc = reloc_functions[i].reloc; |
| input_line_pointer += flen + 2; |
| break; |
| } |
| } |
| if (reloc == 0) |
| return; |
| |
| expression (exp); |
| if (* input_line_pointer == ')') |
| input_line_pointer ++; |
| |
| exp->X_md = reloc; |
| } |
| |
| void |
| rl78_frag_init (fragS * fragP) |
| { |
| if (rl78_bytes.n_relax || rl78_bytes.link_relax) |
| { |
| fragP->tc_frag_data = malloc (sizeof (rl78_bytesT)); |
| memcpy (fragP->tc_frag_data, & rl78_bytes, sizeof (rl78_bytesT)); |
| } |
| else |
| fragP->tc_frag_data = 0; |
| } |
| |
| /* When relaxing, we need to output a reloc for any .align directive |
| so that we can retain this alignment as we adjust opcode sizes. */ |
| void |
| rl78_handle_align (fragS * frag) |
| { |
| if (linkrelax |
| && (frag->fr_type == rs_align |
| || frag->fr_type == rs_align_code) |
| && frag->fr_address + frag->fr_fix > 0 |
| && frag->fr_offset > 0 |
| && now_seg != bss_section) |
| { |
| fix_new (frag, frag->fr_fix, 0, |
| &abs_symbol, RL78_RELAXA_ALIGN + frag->fr_offset, |
| 0, BFD_RELOC_RL78_RELAX); |
| /* For the purposes of relaxation, this relocation is attached |
| to the byte *after* the alignment - i.e. the byte that must |
| remain aligned. */ |
| fix_new (frag->fr_next, 0, 0, |
| &abs_symbol, RL78_RELAXA_ELIGN + frag->fr_offset, |
| 0, BFD_RELOC_RL78_RELAX); |
| } |
| } |
| |
| char * |
| md_atof (int type, char * litP, int * sizeP) |
| { |
| return ieee_md_atof (type, litP, sizeP, target_big_endian); |
| } |
| |
| symbolS * |
| md_undefined_symbol (char * name ATTRIBUTE_UNUSED) |
| { |
| return NULL; |
| } |
| |
| #define APPEND(B, N_B) \ |
| if (rl78_bytes.N_B) \ |
| { \ |
| memcpy (bytes + idx, rl78_bytes.B, rl78_bytes.N_B); \ |
| idx += rl78_bytes.N_B; \ |
| } |
| |
| |
| void |
| md_assemble (char * str) |
| { |
| char * bytes; |
| fragS * frag_then = frag_now; |
| int idx = 0; |
| int i; |
| int rel; |
| expressionS *exp; |
| |
| /*printf("\033[32mASM: %s\033[0m\n", str);*/ |
| |
| dwarf2_emit_insn (0); |
| |
| memset (& rl78_bytes, 0, sizeof (rl78_bytes)); |
| |
| rl78_lex_init (str, str + strlen (str)); |
| |
| rl78_parse (); |
| |
| /* This simplifies the relaxation code. */ |
| if (rl78_bytes.link_relax) |
| { |
| int olen = rl78_bytes.n_prefix + rl78_bytes.n_base + rl78_bytes.n_ops; |
| /* We do it this way because we want the frag to have the |
| rl78_bytes in it, which we initialize above. */ |
| bytes = frag_more (olen); |
| frag_then = frag_now; |
| frag_variant (rs_machine_dependent, |
| olen /* max_chars */, |
| 0 /* var */, |
| olen /* subtype */, |
| 0 /* symbol */, |
| 0 /* offset */, |
| 0 /* opcode */); |
| frag_then->fr_opcode = bytes; |
| frag_then->fr_fix = olen + (bytes - frag_then->fr_literal); |
| frag_then->fr_subtype = olen; |
| frag_then->fr_var = 0; |
| } |
| else |
| { |
| bytes = frag_more (rl78_bytes.n_prefix + rl78_bytes.n_base + rl78_bytes.n_ops); |
| frag_then = frag_now; |
| } |
| |
| APPEND (prefix, n_prefix); |
| APPEND (base, n_base); |
| APPEND (ops, n_ops); |
| |
| if (rl78_bytes.link_relax) |
| { |
| fixS * f; |
| |
| f = fix_new (frag_then, |
| (char *) bytes - frag_then->fr_literal, |
| 0, |
| abs_section_sym, |
| rl78_bytes.link_relax | rl78_bytes.n_fixups, |
| 0, |
| BFD_RELOC_RL78_RELAX); |
| frag_then->tc_frag_data->link_relax_fixP = f; |
| } |
| |
| for (i = 0; i < rl78_bytes.n_fixups; i ++) |
| { |
| /* index: [nbytes][type] */ |
| static int reloc_map[5][4] = |
| { |
| { 0, 0 }, |
| { BFD_RELOC_8, BFD_RELOC_8_PCREL }, |
| { BFD_RELOC_16, BFD_RELOC_16_PCREL }, |
| { BFD_RELOC_24, BFD_RELOC_24_PCREL }, |
| { BFD_RELOC_32, BFD_RELOC_32_PCREL }, |
| }; |
| fixS * f; |
| |
| idx = rl78_bytes.fixups[i].offset / 8; |
| rel = reloc_map [rl78_bytes.fixups[i].nbits / 8][(int) rl78_bytes.fixups[i].type]; |
| |
| if (rl78_bytes.fixups[i].reloc) |
| rel = rl78_bytes.fixups[i].reloc; |
| |
| if (frag_then->tc_frag_data) |
| exp = & frag_then->tc_frag_data->fixups[i].exp; |
| else |
| exp = & rl78_bytes.fixups[i].exp; |
| |
| f = fix_new_exp (frag_then, |
| (char *) bytes + idx - frag_then->fr_literal, |
| rl78_bytes.fixups[i].nbits / 8, |
| exp, |
| rl78_bytes.fixups[i].type == RL78REL_PCREL ? 1 : 0, |
| rel); |
| if (frag_then->tc_frag_data) |
| frag_then->tc_frag_data->fixups[i].fixP = f; |
| } |
| } |
| |
| void |
| rl78_cons_fix_new (fragS * frag, |
| int where, |
| int size, |
| expressionS * exp) |
| { |
| bfd_reloc_code_real_type type; |
| |
| switch (size) |
| { |
| case 1: |
| type = BFD_RELOC_8; |
| break; |
| case 2: |
| type = BFD_RELOC_16; |
| break; |
| case 3: |
| type = BFD_RELOC_24; |
| break; |
| case 4: |
| type = BFD_RELOC_32; |
| break; |
| default: |
| as_bad (_("unsupported constant size %d\n"), size); |
| return; |
| } |
| |
| switch (exp->X_md) |
| { |
| case BFD_RELOC_RL78_CODE: |
| if (size == 2) |
| type = exp->X_md; |
| break; |
| case BFD_RELOC_RL78_LO16: |
| case BFD_RELOC_RL78_HI16: |
| if (size != 2) |
| as_bad (_("%%hi16/%%lo16 only applies to .short or .hword")); |
| type = exp->X_md; |
| break; |
| case BFD_RELOC_RL78_HI8: |
| if (size != 1) |
| as_bad (_("%%hi8 only applies to .byte")); |
| type = exp->X_md; |
| break; |
| default: |
| break; |
| } |
| |
| if (exp->X_op == O_subtract && exp->X_op_symbol) |
| { |
| if (size != 4 && size != 2 && size != 1) |
| as_bad (_("difference of two symbols only supported with .long, .short, or .byte")); |
| else |
| type = BFD_RELOC_RL78_DIFF; |
| } |
| |
| fix_new_exp (frag, where, (int) size, exp, 0, type); |
| } |
| |
| /* No relaxation just yet */ |
| int |
| md_estimate_size_before_relax (fragS * fragP ATTRIBUTE_UNUSED, segT segment ATTRIBUTE_UNUSED) |
| { |
| return 0; |
| } |
| |
| arelent ** |
| tc_gen_reloc (asection * seg ATTRIBUTE_UNUSED, fixS * fixp) |
| { |
| static arelent * reloc[8]; |
| int rp; |
| |
| if (fixp->fx_r_type == BFD_RELOC_NONE) |
| { |
| reloc[0] = NULL; |
| return reloc; |
| } |
| |
| if (fixp->fx_subsy |
| && S_GET_SEGMENT (fixp->fx_subsy) == absolute_section) |
| { |
| fixp->fx_offset -= S_GET_VALUE (fixp->fx_subsy); |
| fixp->fx_subsy = NULL; |
| } |
| |
| reloc[0] = (arelent *) xmalloc (sizeof (arelent)); |
| reloc[0]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
| * reloc[0]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| reloc[0]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| reloc[0]->addend = fixp->fx_offset; |
| |
| if (fixp->fx_r_type == BFD_RELOC_RL78_32_OP |
| && fixp->fx_subsy) |
| { |
| fixp->fx_r_type = BFD_RELOC_RL78_DIFF; |
| } |
| |
| #define OPX(REL,SYM,ADD) \ |
| reloc[rp] = (arelent *) xmalloc (sizeof (arelent)); \ |
| reloc[rp]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); \ |
| reloc[rp]->howto = bfd_reloc_type_lookup (stdoutput, REL); \ |
| reloc[rp]->addend = ADD; \ |
| * reloc[rp]->sym_ptr_ptr = SYM; \ |
| reloc[rp]->address = fixp->fx_frag->fr_address + fixp->fx_where; \ |
| reloc[++rp] = NULL |
| #define OPSYM(SYM) OPX(BFD_RELOC_RL78_SYM, SYM, 0) |
| #define OPIMM(IMM) OPX(BFD_RELOC_RL78_SYM, abs_symbol.bsym, IMM) |
| #define OP(OP) OPX(BFD_RELOC_RL78_##OP, *reloc[0]->sym_ptr_ptr, 0) |
| #define SYM0() reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RL78_SYM) |
| |
| rp = 1; |
| |
| /* Certain BFD relocations cannot be translated directly into |
| a single (non-Red Hat) RL78 relocation, but instead need |
| multiple RL78 relocations - handle them here. */ |
| switch (fixp->fx_r_type) |
| { |
| case BFD_RELOC_RL78_DIFF: |
| SYM0 (); |
| OPSYM (symbol_get_bfdsym (fixp->fx_subsy)); |
| OP(OP_SUBTRACT); |
| |
| switch (fixp->fx_size) |
| { |
| case 1: |
| OP(ABS8); |
| break; |
| case 2: |
| OP (ABS16); |
| break; |
| case 4: |
| OP (ABS32); |
| break; |
| } |
| break; |
| |
| case BFD_RELOC_RL78_NEG32: |
| SYM0 (); |
| OP (OP_NEG); |
| OP (ABS32); |
| break; |
| |
| case BFD_RELOC_RL78_CODE: |
| SYM0 (); |
| OP (ABS16); |
| break; |
| |
| case BFD_RELOC_RL78_LO16: |
| SYM0 (); |
| OPIMM (0xffff); |
| OP (OP_AND); |
| OP (ABS16); |
| break; |
| |
| case BFD_RELOC_RL78_HI16: |
| SYM0 (); |
| OPIMM (16); |
| OP (OP_SHRA); |
| OP (ABS16); |
| break; |
| |
| case BFD_RELOC_RL78_HI8: |
| SYM0 (); |
| OPIMM (16); |
| OP (OP_SHRA); |
| OPIMM (0xff); |
| OP (OP_AND); |
| OP (ABS8); |
| break; |
| |
| default: |
| reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); |
| reloc[1] = NULL; |
| break; |
| } |
| |
| return reloc; |
| } |
| |
| int |
| rl78_validate_fix_sub (struct fix * f) |
| { |
| /* We permit the subtraction of two symbols in a few cases. */ |
| /* mov #sym1-sym2, R3 */ |
| if (f->fx_r_type == BFD_RELOC_RL78_32_OP) |
| return 1; |
| /* .long sym1-sym2 */ |
| if (f->fx_r_type == BFD_RELOC_RL78_DIFF |
| && ! f->fx_pcrel |
| && (f->fx_size == 4 || f->fx_size == 2 || f->fx_size == 1)) |
| return 1; |
| return 0; |
| } |
| |
| long |
| md_pcrel_from_section (fixS * fixP, segT sec) |
| { |
| long rv; |
| |
| if (fixP->fx_addsy != NULL |
| && (! S_IS_DEFINED (fixP->fx_addsy) |
| || S_GET_SEGMENT (fixP->fx_addsy) != sec)) |
| /* The symbol is undefined (or is defined but not in this section). |
| Let the linker figure it out. */ |
| return 0; |
| |
| rv = fixP->fx_frag->fr_address + fixP->fx_where; |
| switch (fixP->fx_r_type) |
| { |
| case BFD_RELOC_8_PCREL: |
| rv += 1; |
| break; |
| case BFD_RELOC_16_PCREL: |
| rv += 2; |
| break; |
| default: |
| break; |
| } |
| return rv; |
| } |
| |
| void |
| md_apply_fix (struct fix * f ATTRIBUTE_UNUSED, |
| valueT * t ATTRIBUTE_UNUSED, |
| segT s ATTRIBUTE_UNUSED) |
| { |
| char * op; |
| unsigned long val; |
| |
| if (f->fx_addsy && S_FORCE_RELOC (f->fx_addsy, 1)) |
| return; |
| if (f->fx_subsy && S_FORCE_RELOC (f->fx_subsy, 1)) |
| return; |
| |
| op = f->fx_frag->fr_literal + f->fx_where; |
| val = (unsigned long) * t; |
| |
| switch (f->fx_r_type) |
| { |
| case BFD_RELOC_NONE: |
| break; |
| |
| case BFD_RELOC_RL78_RELAX: |
| f->fx_done = 1; |
| break; |
| |
| case BFD_RELOC_8: |
| case BFD_RELOC_8_PCREL: |
| op[0] = val; |
| break; |
| |
| case BFD_RELOC_16: |
| case BFD_RELOC_16_PCREL: |
| case BFD_RELOC_RL78_CODE: |
| op[0] = val; |
| op[1] = val >> 8; |
| break; |
| |
| case BFD_RELOC_24: |
| op[0] = val; |
| op[1] = val >> 8; |
| op[2] = val >> 16; |
| break; |
| |
| case BFD_RELOC_32: |
| case BFD_RELOC_RL78_DIFF: |
| op[0] = val; |
| op[1] = val >> 8; |
| op[2] = val >> 16; |
| op[3] = val >> 24; |
| break; |
| |
| default: |
| as_bad (_("Unknown reloc in md_apply_fix: %s"), |
| bfd_get_reloc_code_name (f->fx_r_type)); |
| break; |
| } |
| |
| if (f->fx_addsy == NULL) |
| f->fx_done = 1; |
| } |
| |
| valueT |
| md_section_align (segT segment, valueT size) |
| { |
| int align = bfd_get_section_alignment (stdoutput, segment); |
| return ((size + (1 << align) - 1) & (-1 << align)); |
| } |
| |
| void |
| md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED, |
| segT segment ATTRIBUTE_UNUSED, |
| fragS * fragP ATTRIBUTE_UNUSED) |
| { |
| /* No relaxation yet */ |
| fragP->fr_var = 0; |
| } |