2395 lines
59 KiB
C
2395 lines
59 KiB
C
/* tc-rx.c -- Assembler for the Renesas RX
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Copyright 2008, 2009
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Free Software Foundation, Inc.
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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 3, 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 the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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#include "as.h"
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#include "struc-symbol.h"
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#include "obstack.h"
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#include "safe-ctype.h"
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#include "dwarf2dbg.h"
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#include "libbfd.h"
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#include "elf/common.h"
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#include "elf/rx.h"
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#include "rx-defs.h"
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#include "filenames.h"
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#include "listing.h"
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#include "sb.h"
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#include "macro.h"
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#define RX_OPCODE_BIG_ENDIAN 0
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const char comment_chars[] = ";";
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/* Note that input_file.c hand checks for '#' at the beginning of the
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first line of the input file. This is because the compiler outputs
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#NO_APP at the beginning of its output. */
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const char line_comment_chars[] = "#";
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const char line_separator_chars[] = "!";
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const char EXP_CHARS[] = "eE";
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const char FLT_CHARS[] = "dD";
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/* ELF flags to set in the output file header. */
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static int elf_flags = 0;
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bfd_boolean rx_use_conventional_section_names = FALSE;
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static bfd_boolean rx_use_small_data_limit = FALSE;
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enum options
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{
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OPTION_BIG = OPTION_MD_BASE,
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OPTION_LITTLE,
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OPTION_32BIT_DOUBLES,
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OPTION_64BIT_DOUBLES,
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OPTION_CONVENTIONAL_SECTION_NAMES,
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OPTION_RENESAS_SECTION_NAMES,
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OPTION_SMALL_DATA_LIMIT,
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OPTION_RELAX
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};
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#define RX_SHORTOPTS ""
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const char * md_shortopts = RX_SHORTOPTS;
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/* Assembler options. */
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struct option md_longopts[] =
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{
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{"mbig-endian-data", no_argument, NULL, OPTION_BIG},
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{"mlittle-endian-data", no_argument, NULL, OPTION_LITTLE},
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/* The next two switches are here because the
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generic parts of the linker testsuite uses them. */
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{"EB", no_argument, NULL, OPTION_BIG},
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{"EL", no_argument, NULL, OPTION_LITTLE},
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{"m32bit-doubles", no_argument, NULL, OPTION_32BIT_DOUBLES},
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{"m64bit-doubles", no_argument, NULL, OPTION_64BIT_DOUBLES},
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/* This option is here mainly for the binutils testsuites,
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as many of their tests assume conventional section naming. */
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{"muse-conventional-section-names", no_argument, NULL, OPTION_CONVENTIONAL_SECTION_NAMES},
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{"muse-renesas-section-names", no_argument, NULL, OPTION_RENESAS_SECTION_NAMES},
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{"msmall-data-limit", no_argument, NULL, OPTION_SMALL_DATA_LIMIT},
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{"relax", no_argument, NULL, OPTION_RELAX},
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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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int
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md_parse_option (int c ATTRIBUTE_UNUSED, char * arg ATTRIBUTE_UNUSED)
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{
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switch (c)
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{
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case OPTION_BIG:
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target_big_endian = 1;
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return 1;
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case OPTION_LITTLE:
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target_big_endian = 0;
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return 1;
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case OPTION_32BIT_DOUBLES:
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elf_flags &= ~ E_FLAG_RX_64BIT_DOUBLES;
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return 1;
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case OPTION_64BIT_DOUBLES:
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elf_flags |= E_FLAG_RX_64BIT_DOUBLES;
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return 1;
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case OPTION_CONVENTIONAL_SECTION_NAMES:
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rx_use_conventional_section_names = TRUE;
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return 1;
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case OPTION_RENESAS_SECTION_NAMES:
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rx_use_conventional_section_names = FALSE;
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return 1;
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case OPTION_SMALL_DATA_LIMIT:
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rx_use_small_data_limit = TRUE;
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return 1;
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case OPTION_RELAX:
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linkrelax = 1;
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return 1;
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}
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return 0;
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}
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void
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md_show_usage (FILE * stream)
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{
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fprintf (stream, _(" RX specific command line options:\n"));
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fprintf (stream, _(" --mbig-endian-data\n"));
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fprintf (stream, _(" --mlittle-endian-data [default]\n"));
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fprintf (stream, _(" --m32bit-doubles [default]\n"));
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fprintf (stream, _(" --m64bit-doubles\n"));
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fprintf (stream, _(" --muse-conventional-section-names\n"));
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fprintf (stream, _(" --muse-renesas-section-names [default]\n"));
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fprintf (stream, _(" --msmall-data-limit\n"));
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}
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static void
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s_bss (int ignore ATTRIBUTE_UNUSED)
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{
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int temp;
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temp = get_absolute_expression ();
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subseg_set (bss_section, (subsegT) temp);
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demand_empty_rest_of_line ();
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}
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static void
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rx_float_cons (int ignore ATTRIBUTE_UNUSED)
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{
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if (elf_flags & E_FLAG_RX_64BIT_DOUBLES)
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return float_cons ('d');
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return float_cons ('f');
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}
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static char *
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rx_strcasestr (const char *string, const char *sub)
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{
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int subl;
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int strl;
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if (!sub || !sub[0])
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return (char *)string;
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subl = strlen (sub);
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strl = strlen (string);
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while (strl >= subl)
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{
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/* strncasecmp is in libiberty. */
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if (strncasecmp (string, sub, subl) == 0)
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return (char *)string;
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string ++;
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strl --;
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}
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return NULL;
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}
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static void
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rx_include (int ignore)
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{
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FILE * try;
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char * path;
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char * filename;
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char * current_filename;
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char * eof;
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char * p;
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char * d;
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char * f;
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char end_char;
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size_t len;
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/* The RX version of the .INCLUDE pseudo-op does not
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have to have the filename inside double quotes. */
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SKIP_WHITESPACE ();
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if (*input_line_pointer == '"')
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{
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/* Treat as the normal GAS .include pseudo-op. */
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s_include (ignore);
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return;
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}
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/* Get the filename. Spaces are allowed, NUL characters are not. */
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filename = input_line_pointer;
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eof = find_end_of_line (filename, FALSE);
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input_line_pointer = eof;
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while (eof >= filename && (* eof == ' ' || * eof == '\n'))
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-- eof;
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end_char = *(++ eof);
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* eof = 0;
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if (eof == filename)
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{
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as_bad (_("no filename following .INCLUDE pseudo-op"));
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* eof = end_char;
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return;
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}
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as_where (& current_filename, NULL);
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f = (char *) xmalloc (strlen (current_filename) + strlen (filename) + 1);
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/* Check the filename. If [@]..FILE[@] is found then replace
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this with the current assembler source filename, stripped
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of any directory prefixes or extensions. */
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if ((p = rx_strcasestr (filename, "..file")) != NULL)
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{
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char * c;
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len = 6; /* strlen ("..file"); */
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if (p > filename && p[-1] == '@')
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-- p, ++len;
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if (p[len] == '@')
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len ++;
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for (d = c = current_filename; *c; c++)
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if (IS_DIR_SEPARATOR (* c))
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d = c + 1;
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for (c = d; *c; c++)
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if (*c == '.')
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break;
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sprintf (f, "%.*s%.*s%.*s", (int) (p - filename), filename,
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(int) (c - d), d,
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(int) (strlen (filename) - ((p + len) - filename)),
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p + len);
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}
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else
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strcpy (f, filename);
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/* RX .INCLUDE semantics say that 'filename' is located by:
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1. If filename is absolute, just try that. Otherwise...
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2. If the current source file includes a directory component
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then prepend that to the filename and try. Otherwise...
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3. Try any directories specified by the -I command line
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option(s).
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4 .Try a directory specifed by the INC100 environment variable. */
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if (IS_ABSOLUTE_PATH (f))
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try = fopen (path = f, FOPEN_RT);
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else
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{
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char * env = getenv ("INC100");
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try = NULL;
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len = strlen (current_filename);
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if ((size_t) include_dir_maxlen > len)
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len = include_dir_maxlen;
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if (env && strlen (env) > len)
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len = strlen (env);
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path = (char *) xmalloc (strlen (f) + len + 5);
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if (current_filename != NULL)
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{
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for (d = NULL, p = current_filename; *p; p++)
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if (IS_DIR_SEPARATOR (* p))
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d = p;
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if (d != NULL)
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{
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sprintf (path, "%.*s/%s", (int) (d - current_filename), current_filename,
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f);
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try = fopen (path, FOPEN_RT);
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}
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}
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if (try == NULL)
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{
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int i;
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for (i = 0; i < include_dir_count; i++)
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{
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sprintf (path, "%s/%s", include_dirs[i], f);
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if ((try = fopen (path, FOPEN_RT)) != NULL)
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break;
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}
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}
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if (try == NULL && env != NULL)
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{
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sprintf (path, "%s/%s", env, f);
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try = fopen (path, FOPEN_RT);
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}
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free (f);
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}
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if (try == NULL)
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{
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as_bad (_("unable to locate include file: %s"), filename);
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free (path);
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}
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else
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{
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fclose (try);
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register_dependency (path);
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input_scrub_insert_file (path);
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}
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* eof = end_char;
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}
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static void
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parse_rx_section (char * name)
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{
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asection * sec;
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int type;
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int attr = SHF_ALLOC | SHF_EXECINSTR;
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int align = 2;
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char end_char;
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||
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do
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{
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char * p;
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SKIP_WHITESPACE ();
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for (p = input_line_pointer; *p && strchr ("\n\t, =", *p) == NULL; p++)
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;
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end_char = *p;
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*p = 0;
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if (strcasecmp (input_line_pointer, "ALIGN") == 0)
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{
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*p = end_char;
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||
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if (end_char == ' ')
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while (ISSPACE (*p))
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p++;
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||
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if (*p == '=')
|
||
{
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||
++ p;
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while (ISSPACE (*p))
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p++;
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||
switch (*p)
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{
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case '2': align = 2; break;
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case '4': align = 4; break;
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case '8': align = 8; break;
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default:
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||
as_bad (_("unrecognised alignment value in .SECTION directive: %s"), p);
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ignore_rest_of_line ();
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return;
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||
}
|
||
++ p;
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||
}
|
||
|
||
end_char = *p;
|
||
}
|
||
else if (strcasecmp (input_line_pointer, "CODE") == 0)
|
||
attr = SHF_ALLOC | SHF_EXECINSTR;
|
||
else if (strcasecmp (input_line_pointer, "DATA") == 0)
|
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attr = SHF_ALLOC | SHF_WRITE;
|
||
else if (strcasecmp (input_line_pointer, "ROMDATA") == 0)
|
||
attr = SHF_ALLOC;
|
||
else
|
||
{
|
||
as_bad (_("unknown parameter following .SECTION directive: %s"),
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||
input_line_pointer);
|
||
|
||
*p = end_char;
|
||
input_line_pointer = p + 1;
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
*p = end_char;
|
||
input_line_pointer = p + 1;
|
||
}
|
||
while (end_char != '\n' && end_char != 0);
|
||
|
||
if ((sec = bfd_get_section_by_name (stdoutput, name)) == NULL)
|
||
{
|
||
if (strcmp (name, "B") && strcmp (name, "B_1") && strcmp (name, "B_2"))
|
||
type = SHT_NULL;
|
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else
|
||
type = SHT_NOBITS;
|
||
|
||
obj_elf_change_section (name, type, attr, 0, NULL, FALSE, FALSE);
|
||
}
|
||
else /* Try not to redefine a section, especially B_1. */
|
||
{
|
||
int flags = sec->flags;
|
||
|
||
type = elf_section_type (sec);
|
||
|
||
attr = ((flags & SEC_READONLY) ? 0 : SHF_WRITE)
|
||
| ((flags & SEC_ALLOC) ? SHF_ALLOC : 0)
|
||
| ((flags & SEC_CODE) ? SHF_EXECINSTR : 0)
|
||
| ((flags & SEC_MERGE) ? SHF_MERGE : 0)
|
||
| ((flags & SEC_STRINGS) ? SHF_STRINGS : 0)
|
||
| ((flags & SEC_THREAD_LOCAL) ? SHF_TLS : 0);
|
||
|
||
obj_elf_change_section (name, type, attr, 0, NULL, FALSE, FALSE);
|
||
}
|
||
|
||
bfd_set_section_alignment (stdoutput, now_seg, align);
|
||
}
|
||
|
||
static void
|
||
rx_section (int ignore)
|
||
{
|
||
char * p;
|
||
|
||
/* The as100 assembler supports a different syntax for the .section
|
||
pseudo-op. So check for it and handle it here if necessary. */
|
||
SKIP_WHITESPACE ();
|
||
|
||
/* Peek past the section name to see if arguments follow. */
|
||
for (p = input_line_pointer; *p; p++)
|
||
if (*p == ',' || *p == '\n')
|
||
break;
|
||
|
||
if (*p == ',')
|
||
{
|
||
int len = p - input_line_pointer;
|
||
|
||
while (ISSPACE (*++p))
|
||
;
|
||
|
||
if (*p != '"' && *p != '#')
|
||
{
|
||
char * name = (char *) xmalloc (len + 1);
|
||
|
||
strncpy (name, input_line_pointer, len);
|
||
name[len] = 0;
|
||
|
||
input_line_pointer = p;
|
||
parse_rx_section (name);
|
||
return;
|
||
}
|
||
}
|
||
|
||
obj_elf_section (ignore);
|
||
}
|
||
|
||
static void
|
||
rx_list (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
SKIP_WHITESPACE ();
|
||
|
||
if (strncasecmp (input_line_pointer, "OFF", 3))
|
||
listing_list (0);
|
||
else if (strncasecmp (input_line_pointer, "ON", 2))
|
||
listing_list (1);
|
||
else
|
||
as_warn (_("expecting either ON or OFF after .list"));
|
||
}
|
||
|
||
/* Like the .rept pseudo op, but supports the
|
||
use of ..MACREP inside the repeated region. */
|
||
|
||
static void
|
||
rx_rept (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
int count = get_absolute_expression ();
|
||
|
||
do_repeat_with_expander (count, "MREPEAT", "ENDR", "..MACREP");
|
||
}
|
||
|
||
/* Like cons() accept that strings are allowed. */
|
||
|
||
static void
|
||
rx_cons (int size)
|
||
{
|
||
SKIP_WHITESPACE ();
|
||
|
||
if (* input_line_pointer == '"')
|
||
stringer (8+0);
|
||
else
|
||
cons (size);
|
||
}
|
||
|
||
static void
|
||
rx_nop (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
ignore_rest_of_line ();
|
||
}
|
||
|
||
static void
|
||
rx_unimp (int idx)
|
||
{
|
||
as_warn (_("The \".%s\" pseudo-op is not implemented\n"),
|
||
md_pseudo_table[idx].poc_name);
|
||
ignore_rest_of_line ();
|
||
}
|
||
|
||
/* The target specific pseudo-ops which we support. */
|
||
const pseudo_typeS md_pseudo_table[] =
|
||
{
|
||
/* These are unimplemented. They're listed first so that we can use
|
||
the poc_value as the index into this array, to get the name of
|
||
the pseudo. So, keep these (1) first, and (2) in order, with (3)
|
||
the poc_value's in sequence. */
|
||
{ "btglb", rx_unimp, 0 },
|
||
{ "call", rx_unimp, 1 },
|
||
{ "einsf", rx_unimp, 2 },
|
||
{ "fb", rx_unimp, 3 },
|
||
{ "fbsym", rx_unimp, 4 },
|
||
{ "id", rx_unimp, 5 },
|
||
{ "initsct", rx_unimp, 6 },
|
||
{ "insf", rx_unimp, 7 },
|
||
{ "instr", rx_unimp, 8 },
|
||
{ "lbba", rx_unimp, 9 },
|
||
{ "len", rx_unimp, 10 },
|
||
{ "optj", rx_unimp, 11 },
|
||
{ "rvector", rx_unimp, 12 },
|
||
{ "sb", rx_unimp, 13 },
|
||
{ "sbbit", rx_unimp, 14 },
|
||
{ "sbsym", rx_unimp, 15 },
|
||
{ "sbsym16", rx_unimp, 16 },
|
||
|
||
/* These are the do-nothing pseudos. */
|
||
{ "stk", rx_nop, 0 },
|
||
/* The manual documents ".stk" but the compiler emits ".stack". */
|
||
{ "stack", rx_nop, 0 },
|
||
|
||
/* Theae are Renesas as100 assembler pseudo-ops that we do support. */
|
||
{ "addr", rx_cons, 3 },
|
||
{ "align", s_align_bytes, 2 },
|
||
{ "byte", rx_cons, 1 },
|
||
{ "fixed", float_cons, 'f' },
|
||
{ "form", listing_psize, 0 },
|
||
{ "glb", s_globl, 0 },
|
||
{ "include", rx_include, 0 },
|
||
{ "list", rx_list, 0 },
|
||
{ "lword", rx_cons, 4 },
|
||
{ "mrepeat", rx_rept, 0 },
|
||
{ "section", rx_section, 0 },
|
||
|
||
/* FIXME: The following pseudo-ops place their values (and associated
|
||
label if present) in the data section, regardless of whatever
|
||
section we are currently in. At the moment this code does not
|
||
implement that part of the semantics. */
|
||
{ "blka", s_space, 3 },
|
||
{ "blkb", s_space, 1 },
|
||
{ "blkd", s_space, 8 },
|
||
{ "blkf", s_space, 4 },
|
||
{ "blkl", s_space, 4 },
|
||
{ "blkw", s_space, 2 },
|
||
|
||
/* Our "standard" pseudos. */
|
||
{ "double", rx_float_cons, 0 },
|
||
{ "bss", s_bss, 0 },
|
||
{ "3byte", cons, 3 },
|
||
{ "int", cons, 4 },
|
||
{ "word", cons, 4 },
|
||
|
||
/* End of list marker. */
|
||
{ NULL, NULL, 0 }
|
||
};
|
||
|
||
static asymbol * gp_symbol;
|
||
|
||
void
|
||
md_begin (void)
|
||
{
|
||
if (rx_use_small_data_limit)
|
||
/* Make the __gp symbol now rather
|
||
than after the symbol table is frozen. We only do this
|
||
when supporting small data limits because otherwise we
|
||
pollute the symbol table. */
|
||
gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp"));
|
||
}
|
||
|
||
char * rx_lex_start;
|
||
char * rx_lex_end;
|
||
|
||
typedef struct rx_bytesT
|
||
{
|
||
char base[4];
|
||
int n_base;
|
||
char ops[8];
|
||
int n_ops;
|
||
struct
|
||
{
|
||
expressionS exp;
|
||
char offset;
|
||
char nbits;
|
||
char type; /* RXREL_*. */
|
||
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;
|
||
} rx_bytesT;
|
||
|
||
static rx_bytesT rx_bytes;
|
||
|
||
void
|
||
rx_relax (int type, int pos)
|
||
{
|
||
rx_bytes.relax[rx_bytes.n_relax].type = type;
|
||
rx_bytes.relax[rx_bytes.n_relax].field_pos = pos;
|
||
rx_bytes.relax[rx_bytes.n_relax].val_ofs = rx_bytes.n_base + rx_bytes.n_ops;
|
||
rx_bytes.n_relax ++;
|
||
}
|
||
|
||
void
|
||
rx_linkrelax_dsp (int pos)
|
||
{
|
||
switch (pos)
|
||
{
|
||
case 4:
|
||
rx_bytes.link_relax |= RX_RELAXA_DSP4;
|
||
break;
|
||
case 6:
|
||
rx_bytes.link_relax |= RX_RELAXA_DSP6;
|
||
break;
|
||
case 14:
|
||
rx_bytes.link_relax |= RX_RELAXA_DSP14;
|
||
break;
|
||
}
|
||
}
|
||
|
||
void
|
||
rx_linkrelax_imm (int pos)
|
||
{
|
||
switch (pos)
|
||
{
|
||
case 6:
|
||
rx_bytes.link_relax |= RX_RELAXA_IMM6;
|
||
break;
|
||
case 12:
|
||
rx_bytes.link_relax |= RX_RELAXA_IMM12;
|
||
break;
|
||
}
|
||
}
|
||
|
||
void
|
||
rx_linkrelax_branch (void)
|
||
{
|
||
rx_bytes.link_relax |= RX_RELAXA_BRA;
|
||
}
|
||
|
||
static void
|
||
rx_fixup (expressionS exp, int offsetbits, int nbits, int type)
|
||
{
|
||
rx_bytes.fixups[rx_bytes.n_fixups].exp = exp;
|
||
rx_bytes.fixups[rx_bytes.n_fixups].offset = offsetbits;
|
||
rx_bytes.fixups[rx_bytes.n_fixups].nbits = nbits;
|
||
rx_bytes.fixups[rx_bytes.n_fixups].type = type;
|
||
rx_bytes.fixups[rx_bytes.n_fixups].reloc = exp.X_md;
|
||
rx_bytes.n_fixups ++;
|
||
}
|
||
|
||
#define rx_field_fixup(exp, offset, nbits, type) \
|
||
rx_fixup (exp, offset, nbits, type)
|
||
|
||
#define rx_op_fixup(exp, offset, nbits, type) \
|
||
rx_fixup (exp, offset + 8 * rx_bytes.n_base, nbits, type)
|
||
|
||
void
|
||
rx_base1 (int b1)
|
||
{
|
||
rx_bytes.base[0] = b1;
|
||
rx_bytes.n_base = 1;
|
||
}
|
||
|
||
void
|
||
rx_base2 (int b1, int b2)
|
||
{
|
||
rx_bytes.base[0] = b1;
|
||
rx_bytes.base[1] = b2;
|
||
rx_bytes.n_base = 2;
|
||
}
|
||
|
||
void
|
||
rx_base3 (int b1, int b2, int b3)
|
||
{
|
||
rx_bytes.base[0] = b1;
|
||
rx_bytes.base[1] = b2;
|
||
rx_bytes.base[2] = b3;
|
||
rx_bytes.n_base = 3;
|
||
}
|
||
|
||
void
|
||
rx_base4 (int b1, int b2, int b3, int b4)
|
||
{
|
||
rx_bytes.base[0] = b1;
|
||
rx_bytes.base[1] = b2;
|
||
rx_bytes.base[2] = b3;
|
||
rx_bytes.base[3] = b4;
|
||
rx_bytes.n_base = 4;
|
||
}
|
||
|
||
/* 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
|
||
rx_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 < rx_bytes.n_base);
|
||
rx_bytes.base[bytep] |= svalm;
|
||
|
||
bitp = 0;
|
||
sz -= ssz;
|
||
bytep ++;
|
||
}
|
||
valm = val & ((1 << sz) - 1);
|
||
valm = valm << (8 - bitp - sz);
|
||
gas_assert (bytep < rx_bytes.n_base);
|
||
rx_bytes.base[bytep] |= valm;
|
||
}
|
||
|
||
/* Special case of the above, for 3-bit displacements of 2..9. */
|
||
|
||
void
|
||
rx_disp3 (expressionS exp, int pos)
|
||
{
|
||
rx_field_fixup (exp, pos, 3, RXREL_PCREL);
|
||
}
|
||
|
||
/* Special case of the above, for split 5-bit displacements. Assumes
|
||
the displacement has been checked with rx_disp5op. */
|
||
/* ---- -432 1--- 0--- */
|
||
|
||
void
|
||
rx_field5s (expressionS exp)
|
||
{
|
||
int val;
|
||
|
||
val = exp.X_add_number;
|
||
rx_bytes.base[0] |= val >> 2;
|
||
rx_bytes.base[1] |= (val << 6) & 0x80;
|
||
rx_bytes.base[1] |= (val << 3) & 0x08;
|
||
}
|
||
|
||
/* ---- ---- 4--- 3210 */
|
||
|
||
void
|
||
rx_field5s2 (expressionS exp)
|
||
{
|
||
int val;
|
||
|
||
val = exp.X_add_number;
|
||
rx_bytes.base[1] |= (val << 3) & 0x80;
|
||
rx_bytes.base[1] |= (val ) & 0x0f;
|
||
}
|
||
|
||
#define OP(x) rx_bytes.ops[rx_bytes.n_ops++] = (x)
|
||
|
||
#define F_PRECISION 2
|
||
|
||
void
|
||
rx_op (expressionS exp, int nbytes, int type)
|
||
{
|
||
int v = 0;
|
||
|
||
if ((exp.X_op == O_constant || exp.X_op == O_big)
|
||
&& type != RXREL_PCREL)
|
||
{
|
||
if (exp.X_op == O_big && exp.X_add_number <= 0)
|
||
{
|
||
LITTLENUM_TYPE w[2];
|
||
char * ip = rx_bytes.ops + rx_bytes.n_ops;
|
||
|
||
gen_to_words (w, F_PRECISION, 8);
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
ip[0] = w[0] >> 8;
|
||
ip[1] = w[0];
|
||
ip[2] = w[1] >> 8;
|
||
ip[3] = w[1];
|
||
#else
|
||
ip[3] = w[0] >> 8;
|
||
ip[2] = w[0];
|
||
ip[1] = w[1] >> 8;
|
||
ip[0] = w[1];
|
||
#endif
|
||
rx_bytes.n_ops += 4;
|
||
}
|
||
else
|
||
{
|
||
v = exp.X_add_number;
|
||
while (nbytes)
|
||
{
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
OP ((v >> (8 * (nbytes - 1))) & 0xff);
|
||
#else
|
||
OP (v & 0xff);
|
||
v >>= 8;
|
||
#endif
|
||
nbytes --;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
rx_op_fixup (exp, rx_bytes.n_ops * 8, nbytes * 8, type);
|
||
memset (rx_bytes.ops + rx_bytes.n_ops, 0, nbytes);
|
||
rx_bytes.n_ops += nbytes;
|
||
}
|
||
}
|
||
|
||
int
|
||
rx_wrap (void)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
#define APPEND(B, N_B) \
|
||
if (rx_bytes.N_B) \
|
||
{ \
|
||
memcpy (bytes + idx, rx_bytes.B, rx_bytes.N_B); \
|
||
idx += rx_bytes.N_B; \
|
||
}
|
||
|
||
void
|
||
rx_frag_init (fragS * fragP)
|
||
{
|
||
if (rx_bytes.n_relax || rx_bytes.link_relax)
|
||
{
|
||
fragP->tc_frag_data = malloc (sizeof (rx_bytesT));
|
||
memcpy (fragP->tc_frag_data, & rx_bytes, sizeof (rx_bytesT));
|
||
}
|
||
else
|
||
fragP->tc_frag_data = 0;
|
||
}
|
||
|
||
/* Handle the as100's version of the .equ pseudo-op. It has the syntax:
|
||
<symbol_name> .equ <expression> */
|
||
|
||
static void
|
||
rx_equ (char * name, char * expr)
|
||
{
|
||
char saved_name_end_char;
|
||
char * name_end;
|
||
char * saved_ilp;
|
||
|
||
while (ISSPACE (* name))
|
||
name ++;
|
||
|
||
for (name_end = name + 1; *name_end; name_end ++)
|
||
if (! ISALNUM (* name_end))
|
||
break;
|
||
|
||
saved_name_end_char = * name_end;
|
||
* name_end = 0;
|
||
|
||
saved_ilp = input_line_pointer;
|
||
input_line_pointer = expr;
|
||
|
||
equals (name, 1);
|
||
|
||
input_line_pointer = saved_ilp;
|
||
* name_end = saved_name_end_char;
|
||
}
|
||
|
||
/* Look for Renesas as100 pseudo-ops that occur after a symbol name
|
||
rather than at the start of a line. (eg .EQU or .DEFINE). If one
|
||
is found, process it and return TRUE otherwise return FALSE. */
|
||
|
||
static bfd_boolean
|
||
scan_for_infix_rx_pseudo_ops (char * str)
|
||
{
|
||
char * p;
|
||
char * pseudo_op;
|
||
char * dot = strchr (str, '.');
|
||
|
||
if (dot == NULL || dot == str)
|
||
return FALSE;
|
||
|
||
/* A real pseudo-op must be preceeded by whitespace. */
|
||
if (dot[-1] != ' ' && dot[-1] != '\t')
|
||
return FALSE;
|
||
|
||
pseudo_op = dot + 1;
|
||
|
||
if (!ISALNUM (* pseudo_op))
|
||
return FALSE;
|
||
|
||
for (p = pseudo_op + 1; ISALNUM (* p); p++)
|
||
;
|
||
|
||
if (strncasecmp ("EQU", pseudo_op, p - pseudo_op) == 0)
|
||
rx_equ (str, p);
|
||
else if (strncasecmp ("DEFINE", pseudo_op, p - pseudo_op) == 0)
|
||
as_warn (_("The .DEFINE pseudo-op is not implemented"));
|
||
else if (strncasecmp ("MACRO", pseudo_op, p - pseudo_op) == 0)
|
||
as_warn (_("The .MACRO pseudo-op is not implemented"));
|
||
else if (strncasecmp ("BTEQU", pseudo_op, p - pseudo_op) == 0)
|
||
as_warn (_("The .BTEQU pseudo-op is not implemented."));
|
||
else
|
||
return FALSE;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
void
|
||
md_assemble (char * str)
|
||
{
|
||
char * bytes;
|
||
int idx = 0;
|
||
int i, rel;
|
||
fragS * frag_then = frag_now;
|
||
expressionS *exp;
|
||
|
||
memset (& rx_bytes, 0, sizeof (rx_bytes));
|
||
|
||
rx_lex_init (str, str + strlen (str));
|
||
if (scan_for_infix_rx_pseudo_ops (str))
|
||
return;
|
||
rx_parse ();
|
||
|
||
/* This simplifies the relaxation code. */
|
||
if (rx_bytes.n_relax || rx_bytes.link_relax)
|
||
{
|
||
/* We do it this way because we want the frag to have the
|
||
rx_bytes in it, which we initialize above. */
|
||
bytes = frag_more (12);
|
||
frag_then = frag_now;
|
||
frag_variant (rs_machine_dependent,
|
||
0 /* max_chars */,
|
||
0 /* var */,
|
||
0 /* subtype */,
|
||
0 /* symbol */,
|
||
0 /* offset */,
|
||
0 /* opcode */);
|
||
frag_then->fr_opcode = bytes;
|
||
frag_then->fr_fix += rx_bytes.n_base + rx_bytes.n_ops;
|
||
frag_then->fr_subtype = rx_bytes.n_base + rx_bytes.n_ops;
|
||
}
|
||
else
|
||
{
|
||
bytes = frag_more (rx_bytes.n_base + rx_bytes.n_ops);
|
||
frag_then = frag_now;
|
||
}
|
||
|
||
APPEND (base, n_base);
|
||
APPEND (ops, n_ops);
|
||
|
||
if (rx_bytes.link_relax && rx_bytes.n_fixups)
|
||
{
|
||
fixS * f;
|
||
|
||
f = fix_new (frag_then,
|
||
(char *) bytes - frag_then->fr_literal,
|
||
0,
|
||
abs_section_sym,
|
||
rx_bytes.link_relax | rx_bytes.n_fixups,
|
||
0,
|
||
BFD_RELOC_RX_RELAX);
|
||
frag_then->tc_frag_data->link_relax_fixP = f;
|
||
}
|
||
|
||
for (i = 0; i < rx_bytes.n_fixups; i ++)
|
||
{
|
||
/* index: [nbytes][type] */
|
||
static int reloc_map[5][4] =
|
||
{
|
||
{ 0, 0, 0, BFD_RELOC_RX_DIR3U_PCREL },
|
||
{ BFD_RELOC_8, BFD_RELOC_RX_8U, BFD_RELOC_RX_NEG8, BFD_RELOC_8_PCREL },
|
||
{ BFD_RELOC_RX_16_OP, BFD_RELOC_RX_16U, BFD_RELOC_RX_NEG16, BFD_RELOC_16_PCREL },
|
||
{ BFD_RELOC_RX_24_OP, BFD_RELOC_RX_24U, BFD_RELOC_RX_NEG24, BFD_RELOC_24_PCREL },
|
||
{ BFD_RELOC_RX_32_OP, BFD_RELOC_32, BFD_RELOC_RX_NEG32, BFD_RELOC_32_PCREL },
|
||
};
|
||
fixS * f;
|
||
|
||
idx = rx_bytes.fixups[i].offset / 8;
|
||
rel = reloc_map [rx_bytes.fixups[i].nbits / 8][(int) rx_bytes.fixups[i].type];
|
||
|
||
if (rx_bytes.fixups[i].reloc)
|
||
rel = rx_bytes.fixups[i].reloc;
|
||
|
||
if (frag_then->tc_frag_data)
|
||
exp = & frag_then->tc_frag_data->fixups[i].exp;
|
||
else
|
||
exp = & rx_bytes.fixups[i].exp;
|
||
|
||
f = fix_new_exp (frag_then,
|
||
(char *) bytes + idx - frag_then->fr_literal,
|
||
rx_bytes.fixups[i].nbits / 8,
|
||
exp,
|
||
rx_bytes.fixups[i].type == RXREL_PCREL ? 1 : 0,
|
||
rel);
|
||
if (frag_then->tc_frag_data)
|
||
frag_then->tc_frag_data->fixups[i].fixP = f;
|
||
}
|
||
|
||
dwarf2_emit_insn (idx);
|
||
}
|
||
|
||
void
|
||
rx_md_end (void)
|
||
{
|
||
}
|
||
|
||
/* Write a value out to the object file, using the appropriate endianness. */
|
||
|
||
void
|
||
md_number_to_chars (char * buf, valueT val, int n)
|
||
{
|
||
if (target_big_endian)
|
||
number_to_chars_bigendian (buf, val, n);
|
||
else
|
||
number_to_chars_littleendian (buf, val, n);
|
||
}
|
||
|
||
static struct
|
||
{
|
||
char * fname;
|
||
int reloc;
|
||
}
|
||
reloc_functions[] =
|
||
{
|
||
{ "gp", BFD_RELOC_GPREL16 },
|
||
{ 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;
|
||
}
|
||
|
||
valueT
|
||
md_section_align (segT segment, valueT size)
|
||
{
|
||
int align = bfd_get_section_alignment (stdoutput, segment);
|
||
return ((size + (1 << align) - 1) & (-1 << align));
|
||
}
|
||
|
||
/* 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
|
||
rx_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, RX_RELAXA_ALIGN + frag->fr_offset,
|
||
0, BFD_RELOC_RX_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, RX_RELAXA_ELIGN + frag->fr_offset,
|
||
0, BFD_RELOC_RX_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;
|
||
}
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
/* To recap: we estimate everything based on md_estimate_size, then
|
||
adjust based on rx_relax_frag. When it all settles, we call
|
||
md_convert frag to update the bytes. The relaxation types and
|
||
relocations are in fragP->tc_frag_data, which is a copy of that
|
||
rx_bytes.
|
||
|
||
Our scheme is as follows: fr_fix has the size of the smallest
|
||
opcode (like BRA.S). We store the number of total bytes we need in
|
||
fr_subtype. When we're done relaxing, we use fr_subtype and the
|
||
existing opcode bytes to figure out what actual opcode we need to
|
||
put in there. If the fixup isn't resolvable now, we use the
|
||
maximal size. */
|
||
|
||
#define TRACE_RELAX 0
|
||
#define tprintf if (TRACE_RELAX) printf
|
||
|
||
typedef enum
|
||
{
|
||
OT_other,
|
||
OT_bra,
|
||
OT_beq,
|
||
OT_bne,
|
||
OT_bsr,
|
||
OT_bcc
|
||
} op_type_T;
|
||
|
||
/* We're looking for these types of relaxations:
|
||
|
||
BRA.S 00001dsp
|
||
BRA.B 00101110 dspppppp
|
||
BRA.W 00111000 dspppppp pppppppp
|
||
BRA.A 00000100 dspppppp pppppppp pppppppp
|
||
|
||
BEQ.S 00010dsp
|
||
BEQ.B 00100000 dspppppp
|
||
BEQ.W 00111010 dspppppp pppppppp
|
||
|
||
BNE.S 00011dsp
|
||
BNE.B 00100001 dspppppp
|
||
BNE.W 00111011 dspppppp pppppppp
|
||
|
||
BSR.W 00111001 dspppppp pppppppp
|
||
BSR.A 00000101 dspppppp pppppppp pppppppp
|
||
|
||
Bcc.B 0010cond dspppppp
|
||
|
||
Additionally, we can synthesize longer conditional branches using
|
||
pairs of opcodes, one with an inverted conditional (flip LSB):
|
||
|
||
Bcc.W 0010ncnd 00000110 00111000 dspppppp pppppppp
|
||
Bcc.A 0010ncnd 00000111 00000100 dspppppp pppppppp pppppppp
|
||
BEQ.A 00011100 00000100 dspppppp pppppppp pppppppp
|
||
BNE.A 00010100 00000100 dspppppp pppppppp pppppppp */
|
||
|
||
/* Given the opcode bytes at OP, figure out which opcode it is and
|
||
return the type of opcode. We use this to re-encode the opcode as
|
||
a different size later. */
|
||
|
||
static op_type_T
|
||
rx_opcode_type (char * op)
|
||
{
|
||
unsigned char b = (unsigned char) op[0];
|
||
|
||
switch (b & 0xf8)
|
||
{
|
||
case 0x08: return OT_bra;
|
||
case 0x10: return OT_beq;
|
||
case 0x18: return OT_bne;
|
||
}
|
||
|
||
switch (b)
|
||
{
|
||
case 0x2e: return OT_bra;
|
||
case 0x38: return OT_bra;
|
||
case 0x04: return OT_bra;
|
||
|
||
case 0x20: return OT_beq;
|
||
case 0x3a: return OT_beq;
|
||
|
||
case 0x21: return OT_bne;
|
||
case 0x3b: return OT_bne;
|
||
|
||
case 0x39: return OT_bsr;
|
||
case 0x05: return OT_bsr;
|
||
}
|
||
|
||
if ((b & 0xf0) == 0x20)
|
||
return OT_bcc;
|
||
|
||
return OT_other;
|
||
}
|
||
|
||
/* Returns zero if *addrP has the target address. Else returns nonzero
|
||
if we cannot compute the target address yet. */
|
||
|
||
static int
|
||
rx_frag_fix_value (fragS * fragP,
|
||
segT segment,
|
||
int which,
|
||
addressT * addrP,
|
||
int need_diff,
|
||
addressT * sym_addr)
|
||
{
|
||
addressT addr = 0;
|
||
rx_bytesT * b = fragP->tc_frag_data;
|
||
expressionS * exp = & b->fixups[which].exp;
|
||
|
||
if (need_diff && exp->X_op != O_subtract)
|
||
return 1;
|
||
|
||
if (exp->X_add_symbol)
|
||
{
|
||
if (S_FORCE_RELOC (exp->X_add_symbol, 1))
|
||
return 1;
|
||
if (S_GET_SEGMENT (exp->X_add_symbol) != segment)
|
||
return 1;
|
||
addr += S_GET_VALUE (exp->X_add_symbol);
|
||
}
|
||
|
||
if (exp->X_op_symbol)
|
||
{
|
||
if (exp->X_op != O_subtract)
|
||
return 1;
|
||
if (S_FORCE_RELOC (exp->X_op_symbol, 1))
|
||
return 1;
|
||
if (S_GET_SEGMENT (exp->X_op_symbol) != segment)
|
||
return 1;
|
||
addr -= S_GET_VALUE (exp->X_op_symbol);
|
||
}
|
||
if (sym_addr)
|
||
* sym_addr = addr;
|
||
addr += exp->X_add_number;
|
||
* addrP = addr;
|
||
return 0;
|
||
}
|
||
|
||
/* Estimate how big the opcode is after this relax pass. The return
|
||
value is the difference between fr_fix and the actual size. We
|
||
compute the total size in rx_relax_frag and store it in fr_subtype,
|
||
sowe only need to subtract fx_fix and return it. */
|
||
|
||
int
|
||
md_estimate_size_before_relax (fragS * fragP ATTRIBUTE_UNUSED, segT segment ATTRIBUTE_UNUSED)
|
||
{
|
||
int opfixsize;
|
||
int delta;
|
||
|
||
tprintf ("\033[32m est frag: addr %08lx fix %ld var %ld ofs %ld lit %p opc %p type %d sub %d\033[0m\n",
|
||
fragP->fr_address + (fragP->fr_opcode - fragP->fr_literal),
|
||
fragP->fr_fix, fragP->fr_var, fragP->fr_offset,
|
||
fragP->fr_literal, fragP->fr_opcode, fragP->fr_type, fragP->fr_subtype);
|
||
|
||
/* This is the size of the opcode that's accounted for in fr_fix. */
|
||
opfixsize = fragP->fr_fix - (fragP->fr_opcode - fragP->fr_literal);
|
||
/* This is the size of the opcode that isn't. */
|
||
delta = (fragP->fr_subtype - opfixsize);
|
||
|
||
tprintf (" -> opfixsize %d delta %d\n", opfixsize, delta);
|
||
return delta;
|
||
}
|
||
|
||
/* Given the new addresses for this relax pass, figure out how big
|
||
each opcode must be. We store the total number of bytes needed in
|
||
fr_subtype. The return value is the difference between the size
|
||
after the last pass and the size after this pass, so we use the old
|
||
fr_subtype to calculate the difference. */
|
||
|
||
int
|
||
rx_relax_frag (segT segment ATTRIBUTE_UNUSED, fragS * fragP, long stretch)
|
||
{
|
||
addressT addr0, sym_addr;
|
||
addressT mypc;
|
||
int disp;
|
||
int oldsize = fragP->fr_subtype;
|
||
int newsize = oldsize;
|
||
op_type_T optype;
|
||
/* Index of relaxation we care about. */
|
||
int ri;
|
||
|
||
tprintf ("\033[36mrelax frag: addr %08lx fix %ld var %ld ofs %ld lit %p opc %p type %d sub %d str %ld\033[0m\n",
|
||
fragP->fr_address + (fragP->fr_opcode - fragP->fr_literal),
|
||
fragP->fr_fix, fragP->fr_var, fragP->fr_offset,
|
||
fragP->fr_literal, fragP->fr_opcode, fragP->fr_type, fragP->fr_subtype, stretch);
|
||
|
||
optype = rx_opcode_type (fragP->fr_opcode);
|
||
|
||
/* In the one case where we have both a disp and imm relaxation, we want
|
||
the imm relaxation here. */
|
||
ri = 0;
|
||
if (fragP->tc_frag_data->n_relax > 1
|
||
&& fragP->tc_frag_data->relax[0].type == RX_RELAX_DISP)
|
||
ri = 1;
|
||
|
||
/* Try to get the target address. */
|
||
if (rx_frag_fix_value (fragP, segment, ri, & addr0,
|
||
fragP->tc_frag_data->relax[ri].type != RX_RELAX_BRANCH,
|
||
& sym_addr))
|
||
{
|
||
/* If we don't, we must use the maximum size for the linker.
|
||
Note that we don't use synthetically expanded conditionals
|
||
for this. */
|
||
switch (fragP->tc_frag_data->relax[ri].type)
|
||
{
|
||
case RX_RELAX_BRANCH:
|
||
switch (optype)
|
||
{
|
||
case OT_bra:
|
||
case OT_bsr:
|
||
newsize = 4;
|
||
break;
|
||
case OT_beq:
|
||
case OT_bne:
|
||
newsize = 3;
|
||
break;
|
||
case OT_bcc:
|
||
newsize = 2;
|
||
break;
|
||
case OT_other:
|
||
newsize = oldsize;
|
||
break;
|
||
}
|
||
break;
|
||
|
||
case RX_RELAX_IMM:
|
||
newsize = fragP->tc_frag_data->relax[ri].val_ofs + 4;
|
||
break;
|
||
}
|
||
fragP->fr_subtype = newsize;
|
||
tprintf (" -> new %d old %d delta %d (external)\n", newsize, oldsize, newsize-oldsize);
|
||
return newsize - oldsize;
|
||
}
|
||
|
||
mypc = fragP->fr_address + (fragP->fr_opcode - fragP->fr_literal);
|
||
if (sym_addr > mypc)
|
||
addr0 += stretch;
|
||
|
||
switch (fragP->tc_frag_data->relax[ri].type)
|
||
{
|
||
case RX_RELAX_BRANCH:
|
||
tprintf ("branch, addr %08lx pc %08lx disp %ld\n", addr0, mypc, addr0-mypc);
|
||
disp = (int) addr0 - (int) mypc;
|
||
|
||
switch (optype)
|
||
{
|
||
case OT_bcc:
|
||
if (disp >= -128 && (disp - (oldsize-2)) <= 127)
|
||
/* bcc.b */
|
||
newsize = 2;
|
||
else if (disp >= -32768 && (disp - (oldsize-5)) <= 32767)
|
||
/* bncc.b/bra.w */
|
||
newsize = 5;
|
||
else
|
||
/* bncc.b/bra.a */
|
||
newsize = 6;
|
||
break;
|
||
|
||
case OT_beq:
|
||
case OT_bne:
|
||
if ((disp - (oldsize-1)) >= 3 && (disp - (oldsize-1)) <= 10 && !linkrelax)
|
||
/* beq.s */
|
||
newsize = 1;
|
||
else if (disp >= -128 && (disp - (oldsize-2)) <= 127)
|
||
/* beq.b */
|
||
newsize = 2;
|
||
else if (disp >= -32768 && (disp - (oldsize-3)) <= 32767)
|
||
/* beq.w */
|
||
newsize = 3;
|
||
else
|
||
/* bne.s/bra.a */
|
||
newsize = 5;
|
||
break;
|
||
|
||
case OT_bra:
|
||
case OT_bsr:
|
||
if ((disp - (oldsize-1)) >= 3 && (disp - (oldsize-1)) <= 10 && !linkrelax)
|
||
/* bra.s */
|
||
newsize = 1;
|
||
else if (disp >= -128 && (disp - (oldsize-2)) <= 127)
|
||
/* bra.b */
|
||
newsize = 2;
|
||
else if (disp >= -32768 && (disp - (oldsize-3)) <= 32767)
|
||
/* bra.w */
|
||
newsize = 3;
|
||
else
|
||
/* bra.a */
|
||
newsize = 4;
|
||
break;
|
||
|
||
case OT_other:
|
||
break;
|
||
}
|
||
tprintf (" - newsize %d\n", newsize);
|
||
break;
|
||
|
||
case RX_RELAX_IMM:
|
||
tprintf ("other, addr %08lx pc %08lx LI %d OF %d\n", addr0, mypc,
|
||
fragP->tc_frag_data->relax[ri].field_pos,
|
||
fragP->tc_frag_data->relax[ri].val_ofs);
|
||
|
||
newsize = fragP->tc_frag_data->relax[ri].val_ofs;
|
||
|
||
if ((long) addr0 >= -128 && (long) addr0 <= 127)
|
||
newsize += 1;
|
||
else if ((long) addr0 >= -32768 && (long) addr0 <= 32767)
|
||
newsize += 2;
|
||
else if ((long) addr0 >= -8388608 && (long) addr0 <= 8388607)
|
||
newsize += 3;
|
||
else
|
||
newsize += 4;
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
if (fragP->tc_frag_data->relax[ri].type == RX_RELAX_BRANCH)
|
||
switch (optype)
|
||
{
|
||
case OT_bra:
|
||
case OT_bcc:
|
||
case OT_beq:
|
||
case OT_bne:
|
||
break;
|
||
case OT_bsr:
|
||
if (newsize < 3)
|
||
newsize = 3;
|
||
break;
|
||
case OT_other:
|
||
break;
|
||
}
|
||
|
||
fragP->fr_subtype = newsize;
|
||
tprintf (" -> new %d old %d delta %d\n", newsize, oldsize, newsize-oldsize);
|
||
return newsize - oldsize;
|
||
}
|
||
|
||
/* This lets us test for the opcode type and the desired size in a
|
||
switch statement. */
|
||
#define OPCODE(type,size) ((type) * 16 + (size))
|
||
|
||
/* Given the opcode stored in fr_opcode and the number of bytes we
|
||
think we need, encode a new opcode. We stored a pointer to the
|
||
fixup for this opcode in the tc_frag_data structure. If we can do
|
||
the fixup here, we change the relocation type to "none" (we test
|
||
for that in tc_gen_reloc) else we change it to the right type for
|
||
the new (biggest) opcode. */
|
||
|
||
void
|
||
md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED,
|
||
segT segment ATTRIBUTE_UNUSED,
|
||
fragS * fragP ATTRIBUTE_UNUSED)
|
||
{
|
||
rx_bytesT * rxb = fragP->tc_frag_data;
|
||
addressT addr0, mypc;
|
||
int disp;
|
||
int reloc_type, reloc_adjust;
|
||
char * op = fragP->fr_opcode;
|
||
int keep_reloc = 0;
|
||
int ri;
|
||
int fi = (rxb->n_fixups > 1) ? 1 : 0;
|
||
fixS * fix = rxb->fixups[fi].fixP;
|
||
|
||
tprintf ("\033[31mconvrt frag: addr %08lx fix %ld var %ld ofs %ld lit %p opc %p type %d sub %d\033[0m\n",
|
||
fragP->fr_address + (fragP->fr_opcode - fragP->fr_literal),
|
||
fragP->fr_fix, fragP->fr_var, fragP->fr_offset,
|
||
fragP->fr_literal, fragP->fr_opcode, fragP->fr_type, fragP->fr_subtype);
|
||
|
||
#if TRACE_RELAX
|
||
{
|
||
int i;
|
||
|
||
printf ("lit %08x opc %08x", (int) fragP->fr_literal, (int) fragP->fr_opcode);
|
||
for (i = 0; i < 10; i++)
|
||
printf (" %02x", (unsigned char) (fragP->fr_opcode[i]));
|
||
printf ("\n");
|
||
}
|
||
#endif
|
||
|
||
/* In the one case where we have both a disp and imm relaxation, we want
|
||
the imm relaxation here. */
|
||
ri = 0;
|
||
if (fragP->tc_frag_data->n_relax > 1
|
||
&& fragP->tc_frag_data->relax[0].type == RX_RELAX_DISP)
|
||
ri = 1;
|
||
|
||
/* Try to get the target address. If we fail here, we just use the
|
||
largest format. */
|
||
if (rx_frag_fix_value (fragP, segment, 0, & addr0,
|
||
fragP->tc_frag_data->relax[ri].type != RX_RELAX_BRANCH, 0))
|
||
keep_reloc = 1;
|
||
|
||
if (linkrelax)
|
||
keep_reloc = 1;
|
||
|
||
/* We used a new frag for this opcode, so the opcode address should
|
||
be the frag address. */
|
||
mypc = fragP->fr_address + (fragP->fr_opcode - fragP->fr_literal);
|
||
disp = (int) addr0 - (int) mypc;
|
||
|
||
reloc_type = BFD_RELOC_NONE;
|
||
reloc_adjust = 0;
|
||
|
||
tprintf ("convert, op is %d, disp %d (%lx-%lx)\n", rx_opcode_type (fragP->fr_opcode), disp, addr0, mypc);
|
||
switch (fragP->tc_frag_data->relax[ri].type)
|
||
{
|
||
case RX_RELAX_BRANCH:
|
||
switch (OPCODE (rx_opcode_type (fragP->fr_opcode), fragP->fr_subtype))
|
||
{
|
||
case OPCODE (OT_bra, 1): /* BRA.S - no change. */
|
||
op[0] = 0x08 + (disp & 7);
|
||
break;
|
||
case OPCODE (OT_bra, 2): /* BRA.B - 8 bit. */
|
||
op[0] = 0x2e;
|
||
op[1] = disp;
|
||
reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE;
|
||
reloc_adjust = 1;
|
||
break;
|
||
case OPCODE (OT_bra, 3): /* BRA.W - 16 bit. */
|
||
op[0] = 0x38;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[1] = (disp >> 8) & 0xff;
|
||
op[2] = disp;
|
||
#else
|
||
op[2] = (disp >> 8) & 0xff;
|
||
op[1] = disp;
|
||
#endif
|
||
reloc_adjust = 1;
|
||
reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE;
|
||
break;
|
||
case OPCODE (OT_bra, 4): /* BRA.A - 24 bit. */
|
||
op[0] = 0x04;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[1] = (disp >> 16) & 0xff;
|
||
op[2] = (disp >> 8) & 0xff;
|
||
op[3] = disp;
|
||
#else
|
||
op[3] = (disp >> 16) & 0xff;
|
||
op[2] = (disp >> 8) & 0xff;
|
||
op[1] = disp;
|
||
#endif
|
||
reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE;
|
||
reloc_adjust = 1;
|
||
break;
|
||
|
||
case OPCODE (OT_beq, 1): /* BEQ.S - no change. */
|
||
op[0] = 0x10 + (disp & 7);
|
||
break;
|
||
case OPCODE (OT_beq, 2): /* BEQ.B - 8 bit. */
|
||
op[0] = 0x20;
|
||
op[1] = disp;
|
||
reloc_adjust = 1;
|
||
reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE;
|
||
break;
|
||
case OPCODE (OT_beq, 3): /* BEQ.W - 16 bit. */
|
||
op[0] = 0x3a;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[1] = (disp >> 8) & 0xff;
|
||
op[2] = disp;
|
||
#else
|
||
op[2] = (disp >> 8) & 0xff;
|
||
op[1] = disp;
|
||
#endif
|
||
reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE;
|
||
reloc_adjust = 1;
|
||
break;
|
||
case OPCODE (OT_beq, 5): /* BEQ.A - synthetic. */
|
||
op[0] = 0x1e; /* bne.s .+4. */
|
||
op[1] = 0x04; /* bra.a dsp:24. */
|
||
disp -= 1;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[2] = (disp >> 16) & 0xff;
|
||
op[3] = (disp >> 8) & 0xff;
|
||
op[4] = disp;
|
||
#else
|
||
op[4] = (disp >> 16) & 0xff;
|
||
op[3] = (disp >> 8) & 0xff;
|
||
op[2] = disp;
|
||
#endif
|
||
reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE;
|
||
reloc_adjust = 2;
|
||
break;
|
||
|
||
case OPCODE (OT_bne, 1): /* BNE.S - no change. */
|
||
op[0] = 0x18 + (disp & 7);
|
||
break;
|
||
case OPCODE (OT_bne, 2): /* BNE.B - 8 bit. */
|
||
op[0] = 0x21;
|
||
op[1] = disp;
|
||
reloc_adjust = 1;
|
||
reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE;
|
||
break;
|
||
case OPCODE (OT_bne, 3): /* BNE.W - 16 bit. */
|
||
op[0] = 0x3b;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[1] = (disp >> 8) & 0xff;
|
||
op[2] = disp;
|
||
#else
|
||
op[2] = (disp >> 8) & 0xff;
|
||
op[1] = disp;
|
||
#endif
|
||
reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE;
|
||
reloc_adjust = 1;
|
||
break;
|
||
case OPCODE (OT_bne, 5): /* BNE.A - synthetic. */
|
||
op[0] = 0x15; /* beq.s .+4. */
|
||
op[1] = 0x04; /* bra.a dsp:24. */
|
||
disp -= 1;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[2] = (disp >> 16) & 0xff;
|
||
op[3] = (disp >> 8) & 0xff;
|
||
op[4] = disp;
|
||
#else
|
||
op[4] = (disp >> 16) & 0xff;
|
||
op[3] = (disp >> 8) & 0xff;
|
||
op[2] = disp;
|
||
#endif
|
||
reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE;
|
||
reloc_adjust = 2;
|
||
break;
|
||
|
||
case OPCODE (OT_bsr, 3): /* BSR.W - 16 bit. */
|
||
op[0] = 0x39;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[1] = (disp >> 8) & 0xff;
|
||
op[2] = disp;
|
||
#else
|
||
op[2] = (disp >> 8) & 0xff;
|
||
op[1] = disp;
|
||
#endif
|
||
reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE;
|
||
reloc_adjust = 0;
|
||
break;
|
||
case OPCODE (OT_bsr, 4): /* BSR.A - 24 bit. */
|
||
op[0] = 0x05;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[1] = (disp >> 16) & 0xff;
|
||
op[2] = (disp >> 8) & 0xff;
|
||
op[3] = disp;
|
||
#else
|
||
op[3] = (disp >> 16) & 0xff;
|
||
op[2] = (disp >> 8) & 0xff;
|
||
op[1] = disp;
|
||
#endif
|
||
reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE;
|
||
reloc_adjust = 0;
|
||
break;
|
||
|
||
case OPCODE (OT_bcc, 2): /* Bcond.B - 8 bit. */
|
||
op[1] = disp;
|
||
reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE;
|
||
break;
|
||
case OPCODE (OT_bcc, 5): /* Bcond.W - synthetic. */
|
||
op[0] ^= 1; /* Invert condition. */
|
||
op[1] = 5; /* Displacement. */
|
||
op[2] = 0x38;
|
||
disp -= 2;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[3] = (disp >> 8) & 0xff;
|
||
op[4] = disp;
|
||
#else
|
||
op[4] = (disp >> 8) & 0xff;
|
||
op[3] = disp;
|
||
#endif
|
||
reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE;
|
||
reloc_adjust = 2;
|
||
break;
|
||
case OPCODE (OT_bcc, 6): /* Bcond.S - synthetic. */
|
||
op[0] ^= 1; /* Invert condition. */
|
||
op[1] = 6; /* Displacement. */
|
||
op[2] = 0x04;
|
||
disp -= 2;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[3] = (disp >> 16) & 0xff;
|
||
op[4] = (disp >> 8) & 0xff;
|
||
op[5] = disp;
|
||
#else
|
||
op[5] = (disp >> 16) & 0xff;
|
||
op[4] = (disp >> 8) & 0xff;
|
||
op[3] = disp;
|
||
#endif
|
||
reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE;
|
||
reloc_adjust = 2;
|
||
break;
|
||
|
||
default:
|
||
/* These are opcodes we'll relax in th linker, later. */
|
||
if (rxb->n_fixups)
|
||
reloc_type = rxb->fixups[ri].fixP->fx_r_type;
|
||
break;
|
||
}
|
||
break;
|
||
|
||
case RX_RELAX_IMM:
|
||
{
|
||
int nbytes = fragP->fr_subtype - fragP->tc_frag_data->relax[ri].val_ofs;
|
||
int li;
|
||
char * imm = op + fragP->tc_frag_data->relax[ri].val_ofs;
|
||
|
||
switch (nbytes)
|
||
{
|
||
case 1:
|
||
li = 1;
|
||
imm[0] = addr0;
|
||
reloc_type = BFD_RELOC_8;
|
||
break;
|
||
case 2:
|
||
li = 2;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
imm[1] = addr0;
|
||
imm[0] = addr0 >> 8;
|
||
#else
|
||
imm[0] = addr0;
|
||
imm[1] = addr0 >> 8;
|
||
#endif
|
||
reloc_type = BFD_RELOC_RX_16_OP;
|
||
break;
|
||
case 3:
|
||
li = 3;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
imm[2] = addr0;
|
||
imm[1] = addr0 >> 8;
|
||
imm[0] = addr0 >> 16;
|
||
#else
|
||
imm[0] = addr0;
|
||
imm[1] = addr0 >> 8;
|
||
imm[2] = addr0 >> 16;
|
||
#endif
|
||
reloc_type = BFD_RELOC_RX_24_OP;
|
||
break;
|
||
case 4:
|
||
li = 0;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
imm[3] = addr0;
|
||
imm[2] = addr0 >> 8;
|
||
imm[1] = addr0 >> 16;
|
||
imm[0] = addr0 >> 24;
|
||
#else
|
||
imm[0] = addr0;
|
||
imm[1] = addr0 >> 8;
|
||
imm[2] = addr0 >> 16;
|
||
imm[3] = addr0 >> 24;
|
||
#endif
|
||
reloc_type = BFD_RELOC_RX_32_OP;
|
||
break;
|
||
default:
|
||
as_bad (_("invalid immediate size"));
|
||
li = -1;
|
||
}
|
||
|
||
switch (fragP->tc_frag_data->relax[ri].field_pos)
|
||
{
|
||
case 6:
|
||
op[0] &= 0xfc;
|
||
op[0] |= li;
|
||
break;
|
||
case 12:
|
||
op[1] &= 0xf3;
|
||
op[1] |= li << 2;
|
||
break;
|
||
case 20:
|
||
op[2] &= 0xf3;
|
||
op[2] |= li << 2;
|
||
break;
|
||
default:
|
||
as_bad (_("invalid immediate field position"));
|
||
}
|
||
}
|
||
break;
|
||
|
||
default:
|
||
if (rxb->n_fixups)
|
||
{
|
||
reloc_type = fix->fx_r_type;
|
||
reloc_adjust = 0;
|
||
}
|
||
break;
|
||
}
|
||
|
||
if (rxb->n_fixups)
|
||
{
|
||
|
||
fix->fx_r_type = reloc_type;
|
||
fix->fx_where += reloc_adjust;
|
||
switch (reloc_type)
|
||
{
|
||
case BFD_RELOC_NONE:
|
||
fix->fx_size = 0;
|
||
break;
|
||
case BFD_RELOC_8:
|
||
fix->fx_size = 1;
|
||
break;
|
||
case BFD_RELOC_16_PCREL:
|
||
case BFD_RELOC_RX_16_OP:
|
||
fix->fx_size = 2;
|
||
break;
|
||
case BFD_RELOC_24_PCREL:
|
||
case BFD_RELOC_RX_24_OP:
|
||
fix->fx_size = 3;
|
||
break;
|
||
case BFD_RELOC_RX_32_OP:
|
||
fix->fx_size = 4;
|
||
break;
|
||
}
|
||
}
|
||
|
||
fragP->fr_fix = fragP->fr_subtype + (fragP->fr_opcode - fragP->fr_literal);
|
||
tprintf ("fragP->fr_fix now %ld (%d + (%p - %p)\n", fragP->fr_fix,
|
||
fragP->fr_subtype, fragP->fr_opcode, fragP->fr_literal);
|
||
fragP->fr_var = 0;
|
||
|
||
if (fragP->fr_next != NULL
|
||
&& ((offsetT) (fragP->fr_next->fr_address - fragP->fr_address)
|
||
!= fragP->fr_fix))
|
||
as_bad (_("bad frag at %p : fix %ld addr %ld %ld \n"), fragP,
|
||
fragP->fr_fix, fragP->fr_address, fragP->fr_next->fr_address);
|
||
}
|
||
|
||
#undef OPCODE
|
||
|
||
int
|
||
rx_validate_fix_sub (struct fix * f)
|
||
{
|
||
/* We permit the subtraction of two symbols as a 32-bit relocation. */
|
||
if (f->fx_r_type == BFD_RELOC_RX_DIFF
|
||
&& ! f->fx_pcrel
|
||
&& f->fx_size == 4)
|
||
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_RX_DIR3U_PCREL:
|
||
return rv;
|
||
default:
|
||
return rv - 1;
|
||
}
|
||
}
|
||
|
||
void
|
||
rx_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;
|
||
}
|
||
|
||
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_RX_DIFF;
|
||
}
|
||
|
||
fix_new_exp (frag, where, (int) size, exp, 0, type);
|
||
}
|
||
|
||
void
|
||
md_apply_fix (struct fix * f ATTRIBUTE_UNUSED,
|
||
valueT * t ATTRIBUTE_UNUSED,
|
||
segT s ATTRIBUTE_UNUSED)
|
||
{
|
||
/* Instruction bytes are always little endian. */
|
||
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;
|
||
|
||
#define OP2(x) op[target_big_endian ? 1-x : x]
|
||
#define OP3(x) op[target_big_endian ? 2-x : x]
|
||
#define OP4(x) op[target_big_endian ? 3-x : x]
|
||
|
||
op = f->fx_frag->fr_literal + f->fx_where;
|
||
val = (unsigned long) * t;
|
||
|
||
/* Opcode words are always the same endian. Data words are either
|
||
big or little endian. */
|
||
|
||
switch (f->fx_r_type)
|
||
{
|
||
case BFD_RELOC_NONE:
|
||
break;
|
||
|
||
case BFD_RELOC_RX_RELAX:
|
||
f->fx_done = 1;
|
||
break;
|
||
|
||
case BFD_RELOC_RX_DIR3U_PCREL:
|
||
if (val < 3 || val > 10)
|
||
as_bad_where (f->fx_file, f->fx_line,
|
||
_("jump not 3..10 bytes away (is %d)"), (int) val);
|
||
op[0] &= 0xf8;
|
||
op[0] |= val & 0x07;
|
||
break;
|
||
|
||
case BFD_RELOC_8:
|
||
case BFD_RELOC_8_PCREL:
|
||
case BFD_RELOC_RX_8U:
|
||
op[0] = val;
|
||
break;
|
||
|
||
case BFD_RELOC_16:
|
||
OP2(1) = val & 0xff;
|
||
OP2(0) = (val >> 8) & 0xff;
|
||
break;
|
||
|
||
case BFD_RELOC_16_PCREL:
|
||
case BFD_RELOC_RX_16_OP:
|
||
case BFD_RELOC_RX_16U:
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[1] = val & 0xff;
|
||
op[0] = (val >> 8) & 0xff;
|
||
#else
|
||
op[0] = val & 0xff;
|
||
op[1] = (val >> 8) & 0xff;
|
||
#endif
|
||
break;
|
||
|
||
case BFD_RELOC_24:
|
||
OP3(0) = val & 0xff;
|
||
OP3(1) = (val >> 8) & 0xff;
|
||
OP3(2) = (val >> 16) & 0xff;
|
||
break;
|
||
|
||
case BFD_RELOC_24_PCREL:
|
||
case BFD_RELOC_RX_24_OP:
|
||
case BFD_RELOC_RX_24U:
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[2] = val & 0xff;
|
||
op[1] = (val >> 8) & 0xff;
|
||
op[0] = (val >> 16) & 0xff;
|
||
#else
|
||
op[0] = val & 0xff;
|
||
op[1] = (val >> 8) & 0xff;
|
||
op[2] = (val >> 16) & 0xff;
|
||
#endif
|
||
break;
|
||
|
||
case BFD_RELOC_RX_DIFF:
|
||
switch (f->fx_size)
|
||
{
|
||
case 1:
|
||
op[0] = val & 0xff;
|
||
break;
|
||
case 2:
|
||
OP2(0) = val & 0xff;
|
||
OP2(1) = (val >> 8) & 0xff;
|
||
break;
|
||
case 4:
|
||
OP4(0) = val & 0xff;
|
||
OP4(1) = (val >> 8) & 0xff;
|
||
OP4(2) = (val >> 16) & 0xff;
|
||
OP4(3) = (val >> 24) & 0xff;
|
||
break;
|
||
}
|
||
break;
|
||
|
||
case BFD_RELOC_32:
|
||
OP4(0) = val & 0xff;
|
||
OP4(1) = (val >> 8) & 0xff;
|
||
OP4(2) = (val >> 16) & 0xff;
|
||
OP4(3) = (val >> 24) & 0xff;
|
||
break;
|
||
|
||
case BFD_RELOC_RX_32_OP:
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[3] = val & 0xff;
|
||
op[2] = (val >> 8) & 0xff;
|
||
op[1] = (val >> 16) & 0xff;
|
||
op[0] = (val >> 24) & 0xff;
|
||
#else
|
||
op[0] = val & 0xff;
|
||
op[1] = (val >> 8) & 0xff;
|
||
op[2] = (val >> 16) & 0xff;
|
||
op[3] = (val >> 24) & 0xff;
|
||
#endif
|
||
break;
|
||
|
||
case BFD_RELOC_RX_NEG8:
|
||
op[0] = - val;
|
||
break;
|
||
|
||
case BFD_RELOC_RX_NEG16:
|
||
val = -val;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[1] = val & 0xff;
|
||
op[0] = (val >> 8) & 0xff;
|
||
#else
|
||
op[0] = val & 0xff;
|
||
op[1] = (val >> 8) & 0xff;
|
||
#endif
|
||
break;
|
||
|
||
case BFD_RELOC_RX_NEG24:
|
||
val = -val;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[2] = val & 0xff;
|
||
op[1] = (val >> 8) & 0xff;
|
||
op[0] = (val >> 16) & 0xff;
|
||
#else
|
||
op[0] = val & 0xff;
|
||
op[1] = (val >> 8) & 0xff;
|
||
op[2] = (val >> 16) & 0xff;
|
||
#endif
|
||
break;
|
||
|
||
case BFD_RELOC_RX_NEG32:
|
||
val = -val;
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[3] = val & 0xff;
|
||
op[2] = (val >> 8) & 0xff;
|
||
op[1] = (val >> 16) & 0xff;
|
||
op[0] = (val >> 24) & 0xff;
|
||
#else
|
||
op[0] = val & 0xff;
|
||
op[1] = (val >> 8) & 0xff;
|
||
op[2] = (val >> 16) & 0xff;
|
||
op[3] = (val >> 24) & 0xff;
|
||
#endif
|
||
break;
|
||
|
||
case BFD_RELOC_RX_GPRELL:
|
||
val >>= 1;
|
||
case BFD_RELOC_RX_GPRELW:
|
||
val >>= 1;
|
||
case BFD_RELOC_RX_GPRELB:
|
||
#if RX_OPCODE_BIG_ENDIAN
|
||
op[1] = val & 0xff;
|
||
op[0] = (val >> 8) & 0xff;
|
||
#else
|
||
op[0] = val & 0xff;
|
||
op[1] = (val >> 8) & 0xff;
|
||
#endif
|
||
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;
|
||
}
|
||
|
||
arelent **
|
||
tc_gen_reloc (asection * seg ATTRIBUTE_UNUSED, fixS * fixp)
|
||
{
|
||
static arelent * reloc[5];
|
||
|
||
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;
|
||
|
||
/* Certain BFD relocations cannot be translated directly into
|
||
a single (non-Red Hat) RX relocation, but instead need
|
||
multiple RX relocations - handle them here. */
|
||
switch (fixp->fx_r_type)
|
||
{
|
||
case BFD_RELOC_RX_DIFF:
|
||
reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM);
|
||
|
||
reloc[1] = (arelent *) xmalloc (sizeof (arelent));
|
||
reloc[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
|
||
* reloc[1]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy);
|
||
reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
reloc[1]->addend = 0;
|
||
reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM);
|
||
|
||
reloc[2] = (arelent *) xmalloc (sizeof (arelent));
|
||
reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT);
|
||
reloc[2]->addend = 0;
|
||
reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr;
|
||
reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
|
||
reloc[3] = (arelent *) xmalloc (sizeof (arelent));
|
||
switch (fixp->fx_size)
|
||
{
|
||
case 1:
|
||
reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS8);
|
||
break;
|
||
case 2:
|
||
reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16);
|
||
break;
|
||
case 4:
|
||
reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS32);
|
||
break;
|
||
}
|
||
reloc[3]->addend = 0;
|
||
reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr;
|
||
reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
|
||
reloc[4] = NULL;
|
||
break;
|
||
|
||
case BFD_RELOC_RX_GPRELL:
|
||
reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM);
|
||
|
||
reloc[1] = (arelent *) xmalloc (sizeof (arelent));
|
||
reloc[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
|
||
if (gp_symbol == NULL)
|
||
{
|
||
if (symbol_table_frozen)
|
||
{
|
||
symbolS * gp;
|
||
|
||
gp = symbol_find ("__gp");
|
||
if (gp == NULL)
|
||
as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified"));
|
||
else
|
||
gp_symbol = symbol_get_bfdsym (gp);
|
||
}
|
||
else
|
||
gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp"));
|
||
}
|
||
* reloc[1]->sym_ptr_ptr = gp_symbol;
|
||
reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
reloc[1]->addend = 0;
|
||
reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM);
|
||
|
||
reloc[2] = (arelent *) xmalloc (sizeof (arelent));
|
||
reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT);
|
||
reloc[2]->addend = 0;
|
||
reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr;
|
||
reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
|
||
reloc[3] = (arelent *) xmalloc (sizeof (arelent));
|
||
reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16UL);
|
||
reloc[3]->addend = 0;
|
||
reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr;
|
||
reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
|
||
reloc[4] = NULL;
|
||
break;
|
||
|
||
case BFD_RELOC_RX_GPRELW:
|
||
reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM);
|
||
|
||
reloc[1] = (arelent *) xmalloc (sizeof (arelent));
|
||
reloc[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
|
||
if (gp_symbol == NULL)
|
||
{
|
||
if (symbol_table_frozen)
|
||
{
|
||
symbolS * gp;
|
||
|
||
gp = symbol_find ("__gp");
|
||
if (gp == NULL)
|
||
as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified"));
|
||
else
|
||
gp_symbol = symbol_get_bfdsym (gp);
|
||
}
|
||
else
|
||
gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp"));
|
||
}
|
||
* reloc[1]->sym_ptr_ptr = gp_symbol;
|
||
reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
reloc[1]->addend = 0;
|
||
reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM);
|
||
|
||
reloc[2] = (arelent *) xmalloc (sizeof (arelent));
|
||
reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT);
|
||
reloc[2]->addend = 0;
|
||
reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr;
|
||
reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
|
||
reloc[3] = (arelent *) xmalloc (sizeof (arelent));
|
||
reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16UW);
|
||
reloc[3]->addend = 0;
|
||
reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr;
|
||
reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
|
||
reloc[4] = NULL;
|
||
break;
|
||
|
||
case BFD_RELOC_RX_GPRELB:
|
||
reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM);
|
||
|
||
reloc[1] = (arelent *) xmalloc (sizeof (arelent));
|
||
reloc[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
|
||
if (gp_symbol == NULL)
|
||
{
|
||
if (symbol_table_frozen)
|
||
{
|
||
symbolS * gp;
|
||
|
||
gp = symbol_find ("__gp");
|
||
if (gp == NULL)
|
||
as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified"));
|
||
else
|
||
gp_symbol = symbol_get_bfdsym (gp);
|
||
}
|
||
else
|
||
gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp"));
|
||
}
|
||
* reloc[1]->sym_ptr_ptr = gp_symbol;
|
||
reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
reloc[1]->addend = 0;
|
||
reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM);
|
||
|
||
reloc[2] = (arelent *) xmalloc (sizeof (arelent));
|
||
reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT);
|
||
reloc[2]->addend = 0;
|
||
reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr;
|
||
reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
|
||
reloc[3] = (arelent *) xmalloc (sizeof (arelent));
|
||
reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16U);
|
||
reloc[3]->addend = 0;
|
||
reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr;
|
||
reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
|
||
reloc[4] = NULL;
|
||
break;
|
||
|
||
default:
|
||
reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
|
||
reloc[1] = NULL;
|
||
break;
|
||
}
|
||
|
||
return reloc;
|
||
}
|
||
|
||
/* Set the ELF specific flags. */
|
||
|
||
void
|
||
rx_elf_final_processing (void)
|
||
{
|
||
elf_elfheader (stdoutput)->e_flags |= elf_flags;
|
||
}
|
||
|
||
/* Scan the current input line for occurances of Renesas
|
||
local labels and replace them with the GAS version. */
|
||
|
||
void
|
||
rx_start_line (void)
|
||
{
|
||
int in_double_quote = 0;
|
||
int in_single_quote = 0;
|
||
int done = 0;
|
||
char * p = input_line_pointer;
|
||
|
||
/* Scan the line looking for question marks. Skip past quote enclosed regions. */
|
||
do
|
||
{
|
||
switch (*p)
|
||
{
|
||
case '\n':
|
||
case 0:
|
||
done = 1;
|
||
break;
|
||
|
||
case '"':
|
||
in_double_quote = ! in_double_quote;
|
||
break;
|
||
|
||
case '\'':
|
||
in_single_quote = ! in_single_quote;
|
||
break;
|
||
|
||
case '?':
|
||
if (in_double_quote || in_single_quote)
|
||
break;
|
||
|
||
if (p[1] == ':')
|
||
*p = '1';
|
||
else if (p[1] == '+')
|
||
{
|
||
p[0] = '1';
|
||
p[1] = 'f';
|
||
}
|
||
else if (p[1] == '-')
|
||
{
|
||
p[0] = '1';
|
||
p[1] = 'b';
|
||
}
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
p ++;
|
||
}
|
||
while (! done);
|
||
}
|