--- /dev/null
+/* tc-txvu.c -- Assembler for the TX VU.
+ Copyright (C) 1997 Free Software Foundation.
+
+ This file is part of GAS, the GNU Assembler.
+
+ GAS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ GAS is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GAS; see the file COPYING. If not, write to
+ the Free Software Foundation, 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <stdio.h>
+#include <ctype.h>
+#include "as.h"
+#include "subsegs.h"
+
+const char comment_chars[] = ";";
+const char line_comment_chars[] = "#";
+const char line_separator_chars[] = "!";
+const char EXP_CHARS[] = "eE";
+const char FLT_CHARS[] = "dD";
+\f
+const char *md_shortopts = "";
+
+struct option md_longopts[] =
+{
+ /* insert options here */
+
+ {NULL, no_argument, NULL, 0}
+};
+size_t md_longopts_size = sizeof(md_longopts);
+
+int
+md_parse_option (c, arg)
+ int c;
+ char *arg;
+{
+ return 0;
+}
+
+void
+md_show_usage (stream)
+ FILE *stream;
+{
+#if 0
+ fprintf (stream, "TX VU options:\n");
+#endif
+}
+
+/* Set by md_assemble for use by txvu_fill_insn. */
+static subsegT prev_subseg;
+static segT prev_seg;
+
+/* The target specific pseudo-ops which we support. */
+const pseudo_typeS md_pseudo_table[] =
+{
+ { "word", cons, 4 },
+ { NULL, NULL, 0 }
+};
+\f
+void
+md_begin ()
+{
+ flagword applicable;
+ segT seg;
+ subsegT subseg;
+
+ /* Save the current subseg so we can restore it [it's the default one and
+ we don't want the initial section to be .sbss. */
+ seg = now_seg;
+ subseg = now_subseg;
+
+ subseg_set (seg, subseg);
+}
+
+void
+md_assemble (str)
+ char *str;
+{
+}
+
+void
+md_operand (expressionP)
+ expressionS *expressionP;
+{
+}
+
+valueT
+md_section_align (segment, size)
+ segT segment;
+ valueT size;
+{
+ int align = bfd_get_section_alignment (stdoutput, segment);
+ return ((size + (1 << align) - 1) & (-1 << align));
+}
+
+symbolS *
+md_undefined_symbol (name)
+ char *name;
+{
+ return 0;
+}
+\f
+/* Functions concerning relocs. */
+
+/* The location from which a PC relative jump should be calculated,
+ given a PC relative reloc. */
+
+long
+md_pcrel_from_section (fixP, sec)
+ fixS *fixP;
+ segT sec;
+{
+ if (fixP->fx_addsy != (symbolS *) NULL
+ && (! S_IS_DEFINED (fixP->fx_addsy)
+ || S_GET_SEGMENT (fixP->fx_addsy) != sec))
+ {
+ /* The symbol is undefined (or is defined but not in this section).
+ Let the linker figure it out. */
+ return 0;
+ }
+
+ /* FIXME: `& -16L'? */
+ return (fixP->fx_frag->fr_address + fixP->fx_where) & -4L;
+}
+
+/* Apply a fixup to the object code. This is called for all the
+ fixups we generated by calls to fix_new_exp. At this point all symbol
+ values should be fully resolved, and we attempt to completely resolve the
+ reloc. If we can not do that, we determine the correct reloc code and put
+ it back in the fixup. */
+
+int
+md_apply_fix3 (fixP, valueP, seg)
+ fixS *fixP;
+ valueT *valueP;
+ segT seg;
+{
+ char *where = fixP->fx_frag->fr_literal + fixP->fx_where;
+ valueT value;
+
+ as_fatal ("txvu md_apply_fix3\n");
+}
+
+/* Translate internal representation of relocation info to BFD target
+ format. */
+
+arelent *
+tc_gen_reloc (section, fixp)
+ asection *section;
+ fixS *fixp;
+{
+ /* relocs not handled yet */
+ as_fatal ("txvu tc_gen_reloc\n");
+}
+\f
+/* Write a value out to the object file, using the appropriate endianness. */
+
+void
+md_number_to_chars (buf, val, n)
+ 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);
+}
+
+/* Turn a string in input_line_pointer into a floating point constant of type
+ type, and store the appropriate bytes in *litP. The number of LITTLENUMS
+ emitted is stored in *sizeP . An error message is returned, or NULL on OK.
+*/
+
+/* Equal to MAX_PRECISION in atof-ieee.c */
+#define MAX_LITTLENUMS 6
+
+char *
+md_atof (type, litP, sizeP)
+ char type;
+ char *litP;
+ int *sizeP;
+{
+ int i,prec;
+ LITTLENUM_TYPE words[MAX_LITTLENUMS];
+ LITTLENUM_TYPE *wordP;
+ char *t;
+ char *atof_ieee ();
+
+ switch (type)
+ {
+ case 'f':
+ case 'F':
+ case 's':
+ case 'S':
+ prec = 2;
+ break;
+
+ case 'd':
+ case 'D':
+ case 'r':
+ case 'R':
+ prec = 4;
+ break;
+
+ /* FIXME: Some targets allow other format chars for bigger sizes here. */
+
+ default:
+ *sizeP = 0;
+ return "Bad call to md_atof()";
+ }
+
+ t = atof_ieee (input_line_pointer, type, words);
+ if (t)
+ input_line_pointer = t;
+ *sizeP = prec * sizeof (LITTLENUM_TYPE);
+
+ if (target_big_endian)
+ {
+ for (i = 0; i < prec; i++)
+ {
+ md_number_to_chars (litP, (valueT) words[i], sizeof (LITTLENUM_TYPE));
+ litP += sizeof (LITTLENUM_TYPE);
+ }
+ }
+ else
+ {
+ for (i = prec - 1; i >= 0; i--)
+ {
+ md_number_to_chars (litP, (valueT) words[i], sizeof (LITTLENUM_TYPE));
+ litP += sizeof (LITTLENUM_TYPE);
+ }
+ }
+
+ return 0;
+}
--- /dev/null
+/* tc-txvu.h -- Header file for tc-txvu.c.
+ Copyright (C) 1997 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 2, or (at your option)
+ any later version.
+
+ GAS is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GAS; see the file COPYING. If not, write to
+ the Free Software Foundation, 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#define TC_TXVU
+
+#ifndef BFD_ASSEMBLER
+/* leading space so will compile with cc */
+ #error TXVU support requires BFD_ASSEMBLER
+#endif
+
+#define LISTING_HEADER "TXVU GAS "
+
+/* The target BFD architecture. */
+#define TARGET_ARCH bfd_arch_txvu
+
+#define TARGET_FORMAT "elf32-txvu"
+
+#define TARGET_BYTES_BIG_ENDIAN 0
+
+/* call md_pcrel_from_section, not md_pcrel_from */
+#define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section(FIXP, SEC)
+
+/* Permit temporary numeric labels. */
+#define LOCAL_LABELS_FB 1
+
+#define DIFF_EXPR_OK /* .-foo gets turned into PC relative relocs */
+
+/* We don't need to handle .word strangely. */
+#define WORKING_DOT_WORD
+
+#define md_convert_frag(b,s,f) {as_fatal ("txvu convert_frag\n");}
+#define md_estimate_size_before_relax(f,s) \
+ (as_fatal("estimate_size_before_relax called"),1)
+
+#define MD_APPLY_FIX3
+extern int txvu_md_apply_fix3 ();
+#define md_apply_fix3 txvu_md_apply_fix3
+
+#define TC_HANDLES_FX_DONE
projects / binutils-gdb.git / commitdiff