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Diffstat (limited to 'binutils-2.17/gas/config/tc-mn10200.c')
-rw-r--r--binutils-2.17/gas/config/tc-mn10200.c1371
1 files changed, 0 insertions, 1371 deletions
diff --git a/binutils-2.17/gas/config/tc-mn10200.c b/binutils-2.17/gas/config/tc-mn10200.c
deleted file mode 100644
index 909652ef..00000000
--- a/binutils-2.17/gas/config/tc-mn10200.c
+++ /dev/null
@@ -1,1371 +0,0 @@
-/* tc-mn10200.c -- Assembler code for the Matsushita 10200
- Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
- 2005, 2006 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, 51 Franklin Street - Fifth Floor,
- Boston, MA 02110-1301, USA. */
-
-#include <stdio.h>
-#include "as.h"
-#include "safe-ctype.h"
-#include "subsegs.h"
-#include "opcode/mn10200.h"
-
-/* Structure to hold information about predefined registers. */
-struct reg_name
-{
- const char *name;
- int value;
-};
-
-/* Generic assembler global variables which must be defined by all
- targets. */
-
-/* Characters which always start a comment. */
-const char comment_chars[] = "#";
-
-/* Characters which start a comment at the beginning of a line. */
-const char line_comment_chars[] = ";#";
-
-/* Characters which may be used to separate multiple commands on a
- single line. */
-const char line_separator_chars[] = ";";
-
-/* Characters which are used to indicate an exponent in a floating
- point number. */
-const char EXP_CHARS[] = "eE";
-
-/* Characters which mean that a number is a floating point constant,
- as in 0d1.0. */
-const char FLT_CHARS[] = "dD";
-
-const relax_typeS md_relax_table[] =
- {
- /* bCC relaxing */
- {0x81, -0x7e, 2, 1},
- {0x8004, -0x7ffb, 5, 2},
- {0x800006, -0x7ffff9, 7, 0},
- /* bCCx relaxing */
- {0x81, -0x7e, 3, 4},
- {0x8004, -0x7ffb, 6, 5},
- {0x800006, -0x7ffff9, 8, 0},
- /* jsr relaxing */
- {0x8004, -0x7ffb, 3, 7},
- {0x800006, -0x7ffff9, 5, 0},
- /* jmp relaxing */
- {0x81, -0x7e, 2, 9},
- {0x8004, -0x7ffb, 3, 10},
- {0x800006, -0x7ffff9, 5, 0},
-
-};
-
-
-/* Fixups. */
-#define MAX_INSN_FIXUPS 5
-
-struct mn10200_fixup
-{
- expressionS exp;
- int opindex;
- bfd_reloc_code_real_type reloc;
-};
-
-struct mn10200_fixup fixups[MAX_INSN_FIXUPS];
-static int fc;
-
-const char *md_shortopts = "";
-
-struct option md_longopts[] =
-{
- {NULL, no_argument, NULL, 0}
-};
-
-size_t md_longopts_size = sizeof (md_longopts);
-
-/* The target specific pseudo-ops which we support. */
-const pseudo_typeS md_pseudo_table[] =
-{
- { NULL, NULL, 0 }
-};
-
-/* Opcode hash table. */
-static struct hash_control *mn10200_hash;
-
-/* This table is sorted. Suitable for searching by a binary search. */
-static const struct reg_name data_registers[] =
-{
- { "d0", 0 },
- { "d1", 1 },
- { "d2", 2 },
- { "d3", 3 },
-};
-#define DATA_REG_NAME_CNT \
- (sizeof (data_registers) / sizeof (struct reg_name))
-
-static const struct reg_name address_registers[] =
-{
- { "a0", 0 },
- { "a1", 1 },
- { "a2", 2 },
- { "a3", 3 },
-};
-#define ADDRESS_REG_NAME_CNT \
- (sizeof (address_registers) / sizeof (struct reg_name))
-
-static const struct reg_name other_registers[] =
-{
- { "mdr", 0 },
- { "psw", 0 },
-};
-#define OTHER_REG_NAME_CNT \
- (sizeof (other_registers) / sizeof (struct reg_name))
-
-/* reg_name_search does a binary search of the given register table
- to see if "name" is a valid regiter name. Returns the register
- number from the array on success, or -1 on failure. */
-
-static int
-reg_name_search (const struct reg_name *regs,
- int regcount,
- const char *name)
-{
- int middle, low, high;
- int cmp;
-
- low = 0;
- high = regcount - 1;
-
- do
- {
- middle = (low + high) / 2;
- cmp = strcasecmp (name, regs[middle].name);
- if (cmp < 0)
- high = middle - 1;
- else if (cmp > 0)
- low = middle + 1;
- else
- return regs[middle].value;
- }
- while (low <= high);
- return -1;
-}
-
-/* Summary of register_name().
-
- in: Input_line_pointer points to 1st char of operand.
-
- out: An expressionS.
- The operand may have been a register: in this case, X_op == O_register,
- X_add_number is set to the register number, and truth is returned.
- Input_line_pointer->(next non-blank) char after operand, or is in
- its original state. */
-
-static bfd_boolean
-data_register_name (expressionS *expressionP)
-{
- int reg_number;
- char *name;
- char *start;
- char c;
-
- /* Find the spelling of the operand. */
- start = name = input_line_pointer;
-
- c = get_symbol_end ();
- reg_number = reg_name_search (data_registers, DATA_REG_NAME_CNT, name);
-
- /* Put back the delimiting char. */
- *input_line_pointer = c;
-
- /* Look to see if it's in the register table. */
- if (reg_number >= 0)
- {
- expressionP->X_op = O_register;
- expressionP->X_add_number = reg_number;
-
- /* Make the rest nice. */
- expressionP->X_add_symbol = NULL;
- expressionP->X_op_symbol = NULL;
-
- return TRUE;
- }
-
- /* Reset the line as if we had not done anything. */
- input_line_pointer = start;
- return FALSE;
-}
-
-/* Summary of register_name().
-
- in: Input_line_pointer points to 1st char of operand.
-
- out: An expressionS.
- The operand may have been a register: in this case, X_op == O_register,
- X_add_number is set to the register number, and truth is returned.
- Input_line_pointer->(next non-blank) char after operand, or is in
- its original state. */
-
-static bfd_boolean
-address_register_name (expressionS *expressionP)
-{
- int reg_number;
- char *name;
- char *start;
- char c;
-
- /* Find the spelling of the operand. */
- start = name = input_line_pointer;
-
- c = get_symbol_end ();
- reg_number = reg_name_search (address_registers, ADDRESS_REG_NAME_CNT, name);
-
- /* Put back the delimiting char. */
- *input_line_pointer = c;
-
- /* Look to see if it's in the register table. */
- if (reg_number >= 0)
- {
- expressionP->X_op = O_register;
- expressionP->X_add_number = reg_number;
-
- /* Make the rest nice. */
- expressionP->X_add_symbol = NULL;
- expressionP->X_op_symbol = NULL;
-
- return TRUE;
- }
-
- /* Reset the line as if we had not done anything. */
- input_line_pointer = start;
- return FALSE;
-}
-
-/* Summary of register_name().
-
- in: Input_line_pointer points to 1st char of operand.
-
- out: An expressionS.
- The operand may have been a register: in this case, X_op == O_register,
- X_add_number is set to the register number, and truth is returned.
- Input_line_pointer->(next non-blank) char after operand, or is in
- its original state. */
-
-static bfd_boolean
-other_register_name (expressionS *expressionP)
-{
- int reg_number;
- char *name;
- char *start;
- char c;
-
- /* Find the spelling of the operand. */
- start = name = input_line_pointer;
-
- c = get_symbol_end ();
- reg_number = reg_name_search (other_registers, OTHER_REG_NAME_CNT, name);
-
- /* Put back the delimiting char. */
- *input_line_pointer = c;
-
- /* Look to see if it's in the register table. */
- if (reg_number >= 0)
- {
- expressionP->X_op = O_register;
- expressionP->X_add_number = reg_number;
-
- /* Make the rest nice. */
- expressionP->X_add_symbol = NULL;
- expressionP->X_op_symbol = NULL;
-
- return TRUE;
- }
-
- /* Reset the line as if we had not done anything. */
- input_line_pointer = start;
- return FALSE;
-}
-
-void
-md_show_usage (FILE *stream)
-{
- fprintf (stream, _("MN10200 options:\n\
-none yet\n"));
-}
-
-int
-md_parse_option (int c ATTRIBUTE_UNUSED,
- char *arg ATTRIBUTE_UNUSED)
-{
- return 0;
-}
-
-symbolS *
-md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
-{
- return 0;
-}
-
-char *
-md_atof (int type, char *litp, int *sizep)
-{
- int prec;
- LITTLENUM_TYPE words[4];
- char *t;
- int i;
-
- switch (type)
- {
- case 'f':
- prec = 2;
- break;
-
- case 'd':
- prec = 4;
- break;
-
- default:
- *sizep = 0;
- return _("bad call to md_atof");
- }
-
- t = atof_ieee (input_line_pointer, type, words);
- if (t)
- input_line_pointer = t;
-
- *sizep = prec * 2;
-
- for (i = prec - 1; i >= 0; i--)
- {
- md_number_to_chars (litp, (valueT) words[i], 2);
- litp += 2;
- }
-
- return NULL;
-}
-
-void
-md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
- asection *sec,
- fragS *fragP)
-{
- static unsigned long label_count = 0;
- char buf[40];
-
- subseg_change (sec, 0);
- if (fragP->fr_subtype == 0)
- {
- fix_new (fragP, fragP->fr_fix + 1, 1, fragP->fr_symbol,
- fragP->fr_offset, 1, BFD_RELOC_8_PCREL);
- fragP->fr_var = 0;
- fragP->fr_fix += 2;
- }
- else if (fragP->fr_subtype == 1)
- {
- /* Reverse the condition of the first branch. */
- int offset = fragP->fr_fix;
- int opcode = fragP->fr_literal[offset] & 0xff;
-
- switch (opcode)
- {
- case 0xe8:
- opcode = 0xe9;
- break;
- case 0xe9:
- opcode = 0xe8;
- break;
- case 0xe0:
- opcode = 0xe2;
- break;
- case 0xe2:
- opcode = 0xe0;
- break;
- case 0xe3:
- opcode = 0xe1;
- break;
- case 0xe1:
- opcode = 0xe3;
- break;
- case 0xe4:
- opcode = 0xe6;
- break;
- case 0xe6:
- opcode = 0xe4;
- break;
- case 0xe7:
- opcode = 0xe5;
- break;
- case 0xe5:
- opcode = 0xe7;
- break;
- default:
- abort ();
- }
- fragP->fr_literal[offset] = opcode;
-
- /* Create a fixup for the reversed conditional branch. */
- sprintf (buf, ".%s_%ld", FAKE_LABEL_NAME, label_count++);
- fix_new (fragP, fragP->fr_fix + 1, 1,
- symbol_new (buf, sec, 0, fragP->fr_next),
- fragP->fr_offset, 1, BFD_RELOC_8_PCREL);
-
- /* Now create the unconditional branch + fixup to the
- final target. */
- fragP->fr_literal[offset + 2] = 0xfc;
- fix_new (fragP, fragP->fr_fix + 3, 2, fragP->fr_symbol,
- fragP->fr_offset, 1, BFD_RELOC_16_PCREL);
- fragP->fr_var = 0;
- fragP->fr_fix += 5;
- }
- else if (fragP->fr_subtype == 2)
- {
- /* Reverse the condition of the first branch. */
- int offset = fragP->fr_fix;
- int opcode = fragP->fr_literal[offset] & 0xff;
-
- switch (opcode)
- {
- case 0xe8:
- opcode = 0xe9;
- break;
- case 0xe9:
- opcode = 0xe8;
- break;
- case 0xe0:
- opcode = 0xe2;
- break;
- case 0xe2:
- opcode = 0xe0;
- break;
- case 0xe3:
- opcode = 0xe1;
- break;
- case 0xe1:
- opcode = 0xe3;
- break;
- case 0xe4:
- opcode = 0xe6;
- break;
- case 0xe6:
- opcode = 0xe4;
- break;
- case 0xe7:
- opcode = 0xe5;
- break;
- case 0xe5:
- opcode = 0xe7;
- break;
- default:
- abort ();
- }
- fragP->fr_literal[offset] = opcode;
-
- /* Create a fixup for the reversed conditional branch. */
- sprintf (buf, ".%s_%ld", FAKE_LABEL_NAME, label_count++);
- fix_new (fragP, fragP->fr_fix + 1, 1,
- symbol_new (buf, sec, 0, fragP->fr_next),
- fragP->fr_offset, 1, BFD_RELOC_8_PCREL);
-
- /* Now create the unconditional branch + fixup to the
- final target. */
- fragP->fr_literal[offset + 2] = 0xf4;
- fragP->fr_literal[offset + 3] = 0xe0;
- fix_new (fragP, fragP->fr_fix + 4, 4, fragP->fr_symbol,
- fragP->fr_offset, 1, BFD_RELOC_24_PCREL);
- fragP->fr_var = 0;
- fragP->fr_fix += 7;
- }
- else if (fragP->fr_subtype == 3)
- {
- fix_new (fragP, fragP->fr_fix + 2, 1, fragP->fr_symbol,
- fragP->fr_offset, 1, BFD_RELOC_8_PCREL);
- fragP->fr_var = 0;
- fragP->fr_fix += 3;
- }
- else if (fragP->fr_subtype == 4)
- {
- /* Reverse the condition of the first branch. */
- int offset = fragP->fr_fix;
- int opcode = fragP->fr_literal[offset + 1] & 0xff;
-
- switch (opcode)
- {
- case 0xfc:
- opcode = 0xfd;
- break;
- case 0xfd:
- opcode = 0xfc;
- break;
- case 0xfe:
- opcode = 0xff;
- break;
- case 0xff:
- opcode = 0xfe;
- case 0xe8:
- opcode = 0xe9;
- break;
- case 0xe9:
- opcode = 0xe8;
- break;
- case 0xe0:
- opcode = 0xe2;
- break;
- case 0xe2:
- opcode = 0xe0;
- break;
- case 0xe3:
- opcode = 0xe1;
- break;
- case 0xe1:
- opcode = 0xe3;
- break;
- case 0xe4:
- opcode = 0xe6;
- break;
- case 0xe6:
- opcode = 0xe4;
- break;
- case 0xe7:
- opcode = 0xe5;
- break;
- case 0xe5:
- opcode = 0xe7;
- break;
- case 0xec:
- opcode = 0xed;
- break;
- case 0xed:
- opcode = 0xec;
- break;
- case 0xee:
- opcode = 0xef;
- break;
- case 0xef:
- opcode = 0xee;
- break;
- default:
- abort ();
- }
- fragP->fr_literal[offset + 1] = opcode;
-
- /* Create a fixup for the reversed conditional branch. */
- sprintf (buf, ".%s_%ld", FAKE_LABEL_NAME, label_count++);
- fix_new (fragP, fragP->fr_fix + 2, 1,
- symbol_new (buf, sec, 0, fragP->fr_next),
- fragP->fr_offset, 1, BFD_RELOC_8_PCREL);
-
- /* Now create the unconditional branch + fixup to the
- final target. */
- fragP->fr_literal[offset + 3] = 0xfc;
- fix_new (fragP, fragP->fr_fix + 4, 2, fragP->fr_symbol,
- fragP->fr_offset, 1, BFD_RELOC_16_PCREL);
- fragP->fr_var = 0;
- fragP->fr_fix += 6;
- }
- else if (fragP->fr_subtype == 5)
- {
- /* Reverse the condition of the first branch. */
- int offset = fragP->fr_fix;
- int opcode = fragP->fr_literal[offset + 1] & 0xff;
-
- switch (opcode)
- {
- case 0xfc:
- opcode = 0xfd;
- break;
- case 0xfd:
- opcode = 0xfc;
- break;
- case 0xfe:
- opcode = 0xff;
- break;
- case 0xff:
- opcode = 0xfe;
- case 0xe8:
- opcode = 0xe9;
- break;
- case 0xe9:
- opcode = 0xe8;
- break;
- case 0xe0:
- opcode = 0xe2;
- break;
- case 0xe2:
- opcode = 0xe0;
- break;
- case 0xe3:
- opcode = 0xe1;
- break;
- case 0xe1:
- opcode = 0xe3;
- break;
- case 0xe4:
- opcode = 0xe6;
- break;
- case 0xe6:
- opcode = 0xe4;
- break;
- case 0xe7:
- opcode = 0xe5;
- break;
- case 0xe5:
- opcode = 0xe7;
- break;
- case 0xec:
- opcode = 0xed;
- break;
- case 0xed:
- opcode = 0xec;
- break;
- case 0xee:
- opcode = 0xef;
- break;
- case 0xef:
- opcode = 0xee;
- break;
- default:
- abort ();
- }
- fragP->fr_literal[offset + 1] = opcode;
-
- /* Create a fixup for the reversed conditional branch. */
- sprintf (buf, ".%s_%ld", FAKE_LABEL_NAME, label_count++);
- fix_new (fragP, fragP->fr_fix + 2, 1,
- symbol_new (buf, sec, 0, fragP->fr_next),
- fragP->fr_offset, 1, BFD_RELOC_8_PCREL);
-
- /* Now create the unconditional branch + fixup to the
- final target. */
- fragP->fr_literal[offset + 3] = 0xf4;
- fragP->fr_literal[offset + 4] = 0xe0;
- fix_new (fragP, fragP->fr_fix + 5, 4, fragP->fr_symbol,
- fragP->fr_offset, 1, BFD_RELOC_24_PCREL);
- fragP->fr_var = 0;
- fragP->fr_fix += 8;
- }
- else if (fragP->fr_subtype == 6)
- {
- fix_new (fragP, fragP->fr_fix + 1, 2, fragP->fr_symbol,
- fragP->fr_offset, 1, BFD_RELOC_16_PCREL);
- fragP->fr_var = 0;
- fragP->fr_fix += 3;
- }
- else if (fragP->fr_subtype == 7)
- {
- int offset = fragP->fr_fix;
- fragP->fr_literal[offset] = 0xf4;
- fragP->fr_literal[offset + 1] = 0xe1;
-
- fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol,
- fragP->fr_offset, 1, BFD_RELOC_24_PCREL);
- fragP->fr_var = 0;
- fragP->fr_fix += 5;
- }
- else if (fragP->fr_subtype == 8)
- {
- fragP->fr_literal[fragP->fr_fix] = 0xea;
- fix_new (fragP, fragP->fr_fix + 1, 1, fragP->fr_symbol,
- fragP->fr_offset, 1, BFD_RELOC_8_PCREL);
- fragP->fr_var = 0;
- fragP->fr_fix += 2;
- }
- else if (fragP->fr_subtype == 9)
- {
- int offset = fragP->fr_fix;
- fragP->fr_literal[offset] = 0xfc;
-
- fix_new (fragP, fragP->fr_fix + 1, 4, fragP->fr_symbol,
- fragP->fr_offset, 1, BFD_RELOC_16_PCREL);
- fragP->fr_var = 0;
- fragP->fr_fix += 3;
- }
- else if (fragP->fr_subtype == 10)
- {
- int offset = fragP->fr_fix;
- fragP->fr_literal[offset] = 0xf4;
- fragP->fr_literal[offset + 1] = 0xe0;
-
- fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol,
- fragP->fr_offset, 1, BFD_RELOC_24_PCREL);
- fragP->fr_var = 0;
- fragP->fr_fix += 5;
- }
- else
- abort ();
-}
-
-valueT
-md_section_align (asection *seg, valueT addr)
-{
- int align = bfd_get_section_alignment (stdoutput, seg);
- return ((addr + (1 << align) - 1) & (-1 << align));
-}
-
-void
-md_begin (void)
-{
- char *prev_name = "";
- register const struct mn10200_opcode *op;
-
- mn10200_hash = hash_new ();
-
- /* Insert unique names into hash table. The MN10200 instruction set
- has many identical opcode names that have different opcodes based
- on the operands. This hash table then provides a quick index to
- the first opcode with a particular name in the opcode table. */
-
- op = mn10200_opcodes;
- while (op->name)
- {
- if (strcmp (prev_name, op->name))
- {
- prev_name = (char *) op->name;
- hash_insert (mn10200_hash, op->name, (char *) op);
- }
- op++;
- }
-
- /* This is both a simplification (we don't have to write md_apply_fix)
- and support for future optimizations (branch shortening and similar
- stuff in the linker. */
- linkrelax = 1;
-}
-
-static unsigned long
-check_operand (unsigned long insn ATTRIBUTE_UNUSED,
- const struct mn10200_operand *operand,
- offsetT val)
-{
- /* No need to check 24bit or 32bit operands for a bit. */
- if (operand->bits < 24
- && (operand->flags & MN10200_OPERAND_NOCHECK) == 0)
- {
- long min, max;
- offsetT test;
-
- if ((operand->flags & MN10200_OPERAND_SIGNED) != 0)
- {
- max = (1 << (operand->bits - 1)) - 1;
- min = - (1 << (operand->bits - 1));
- }
- else
- {
- max = (1 << operand->bits) - 1;
- min = 0;
- }
-
- test = val;
-
- if (test < (offsetT) min || test > (offsetT) max)
- return 0;
- else
- return 1;
- }
- return 1;
-}
-/* If while processing a fixup, a reloc really needs to be created
- Then it is done here. */
-
-arelent *
-tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixp)
-{
- arelent *reloc;
- reloc = xmalloc (sizeof (arelent));
-
- if (fixp->fx_subsy != NULL)
- {
- if (S_GET_SEGMENT (fixp->fx_addsy) == S_GET_SEGMENT (fixp->fx_subsy)
- && S_IS_DEFINED (fixp->fx_subsy))
- {
- fixp->fx_offset -= S_GET_VALUE (fixp->fx_subsy);
- fixp->fx_subsy = NULL;
- }
- else
- /* FIXME: We should try more ways to resolve difference expressions
- here. At least this is better than silently ignoring the
- subtrahend. */
- as_bad_where (fixp->fx_file, fixp->fx_line,
- _("can't resolve `%s' {%s section} - `%s' {%s section}"),
- fixp->fx_addsy ? S_GET_NAME (fixp->fx_addsy) : "0",
- segment_name (fixp->fx_addsy
- ? S_GET_SEGMENT (fixp->fx_addsy)
- : absolute_section),
- S_GET_NAME (fixp->fx_subsy),
- segment_name (S_GET_SEGMENT (fixp->fx_addsy)));
- }
-
- reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
- if (reloc->howto == NULL)
- {
- as_bad_where (fixp->fx_file, fixp->fx_line,
- _("reloc %d not supported by object file format"),
- (int) fixp->fx_r_type);
- return NULL;
- }
- reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
- reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
- *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
- reloc->addend = fixp->fx_offset;
- return reloc;
-}
-
-int
-md_estimate_size_before_relax (fragS *fragp, asection *seg)
-{
- if (fragp->fr_subtype == 6
- && (!S_IS_DEFINED (fragp->fr_symbol)
- || seg != S_GET_SEGMENT (fragp->fr_symbol)))
- fragp->fr_subtype = 7;
- else if (fragp->fr_subtype == 8
- && (!S_IS_DEFINED (fragp->fr_symbol)
- || seg != S_GET_SEGMENT (fragp->fr_symbol)))
- fragp->fr_subtype = 10;
-
- if (fragp->fr_subtype >= sizeof (md_relax_table) / sizeof (md_relax_table[0]))
- abort ();
-
- return md_relax_table[fragp->fr_subtype].rlx_length;
-}
-
-long
-md_pcrel_from (fixS *fixp)
-{
- return fixp->fx_frag->fr_address;
-}
-
-void
-md_apply_fix (fixS * fixP, valueT * valP ATTRIBUTE_UNUSED, segT seg ATTRIBUTE_UNUSED)
-{
- /* We shouldn't ever get here because linkrelax is nonzero. */
- abort ();
- fixP->fx_done = 1;
-}
-
-/* Insert an operand value into an instruction. */
-
-static void
-mn10200_insert_operand (unsigned long *insnp,
- unsigned long *extensionp,
- const struct mn10200_operand *operand,
- offsetT val,
- char *file,
- unsigned int line,
- unsigned int shift)
-{
- /* No need to check 24 or 32bit operands for a bit. */
- if (operand->bits < 24
- && (operand->flags & MN10200_OPERAND_NOCHECK) == 0)
- {
- long min, max;
- offsetT test;
-
- if ((operand->flags & MN10200_OPERAND_SIGNED) != 0)
- {
- max = (1 << (operand->bits - 1)) - 1;
- min = - (1 << (operand->bits - 1));
- }
- else
- {
- max = (1 << operand->bits) - 1;
- min = 0;
- }
-
- test = val;
-
- if (test < (offsetT) min || test > (offsetT) max)
- as_warn_value_out_of_range (_("operand"), test, (offsetT) min, (offsetT) max, file, line);
- }
-
- if ((operand->flags & MN10200_OPERAND_EXTENDED) == 0)
- {
- *insnp |= (((long) val & ((1 << operand->bits) - 1))
- << (operand->shift + shift));
-
- if ((operand->flags & MN10200_OPERAND_REPEATED) != 0)
- *insnp |= (((long) val & ((1 << operand->bits) - 1))
- << (operand->shift + shift + 2));
- }
- else
- {
- *extensionp |= (val >> 16) & 0xff;
- *insnp |= val & 0xffff;
- }
-}
-
-void
-md_assemble (char *str)
-{
- char *s;
- struct mn10200_opcode *opcode;
- struct mn10200_opcode *next_opcode;
- const unsigned char *opindex_ptr;
- int next_opindex, relaxable;
- unsigned long insn, extension, size = 0;
- char *f;
- int i;
- int match;
-
- /* Get the opcode. */
- for (s = str; *s != '\0' && !ISSPACE (*s); s++)
- ;
- if (*s != '\0')
- *s++ = '\0';
-
- /* Find the first opcode with the proper name. */
- opcode = (struct mn10200_opcode *) hash_find (mn10200_hash, str);
- if (opcode == NULL)
- {
- as_bad (_("Unrecognized opcode: `%s'"), str);
- return;
- }
-
- str = s;
- while (ISSPACE (*str))
- ++str;
-
- input_line_pointer = str;
-
- for (;;)
- {
- const char *errmsg = NULL;
- int op_idx;
- char *hold;
- int extra_shift = 0;
-
- relaxable = 0;
- fc = 0;
- match = 0;
- next_opindex = 0;
- insn = opcode->opcode;
- extension = 0;
- for (op_idx = 1, opindex_ptr = opcode->operands;
- *opindex_ptr != 0;
- opindex_ptr++, op_idx++)
- {
- const struct mn10200_operand *operand;
- expressionS ex;
-
- if (next_opindex == 0)
- {
- operand = &mn10200_operands[*opindex_ptr];
- }
- else
- {
- operand = &mn10200_operands[next_opindex];
- next_opindex = 0;
- }
-
- errmsg = NULL;
-
- while (*str == ' ' || *str == ',')
- ++str;
-
- if (operand->flags & MN10200_OPERAND_RELAX)
- relaxable = 1;
-
- /* Gather the operand. */
- hold = input_line_pointer;
- input_line_pointer = str;
-
- if (operand->flags & MN10200_OPERAND_PAREN)
- {
- if (*input_line_pointer != ')' && *input_line_pointer != '(')
- {
- input_line_pointer = hold;
- str = hold;
- goto error;
- }
- input_line_pointer++;
- goto keep_going;
- }
- /* See if we can match the operands. */
- else if (operand->flags & MN10200_OPERAND_DREG)
- {
- if (!data_register_name (&ex))
- {
- input_line_pointer = hold;
- str = hold;
- goto error;
- }
- }
- else if (operand->flags & MN10200_OPERAND_AREG)
- {
- if (!address_register_name (&ex))
- {
- input_line_pointer = hold;
- str = hold;
- goto error;
- }
- }
- else if (operand->flags & MN10200_OPERAND_PSW)
- {
- char *start = input_line_pointer;
- char c = get_symbol_end ();
-
- if (strcmp (start, "psw") != 0)
- {
- *input_line_pointer = c;
- input_line_pointer = hold;
- str = hold;
- goto error;
- }
- *input_line_pointer = c;
- goto keep_going;
- }
- else if (operand->flags & MN10200_OPERAND_MDR)
- {
- char *start = input_line_pointer;
- char c = get_symbol_end ();
-
- if (strcmp (start, "mdr") != 0)
- {
- *input_line_pointer = c;
- input_line_pointer = hold;
- str = hold;
- goto error;
- }
- *input_line_pointer = c;
- goto keep_going;
- }
- else if (data_register_name (&ex))
- {
- input_line_pointer = hold;
- str = hold;
- goto error;
- }
- else if (address_register_name (&ex))
- {
- input_line_pointer = hold;
- str = hold;
- goto error;
- }
- else if (other_register_name (&ex))
- {
- input_line_pointer = hold;
- str = hold;
- goto error;
- }
- else if (*str == ')' || *str == '(')
- {
- input_line_pointer = hold;
- str = hold;
- goto error;
- }
- else
- {
- expression (&ex);
- }
-
- switch (ex.X_op)
- {
- case O_illegal:
- errmsg = _("illegal operand");
- goto error;
- case O_absent:
- errmsg = _("missing operand");
- goto error;
- case O_register:
- if ((operand->flags
- & (MN10200_OPERAND_DREG | MN10200_OPERAND_AREG)) == 0)
- {
- input_line_pointer = hold;
- str = hold;
- goto error;
- }
-
- if (opcode->format == FMT_2 || opcode->format == FMT_5)
- extra_shift = 8;
- else if (opcode->format == FMT_3 || opcode->format == FMT_6
- || opcode->format == FMT_7)
- extra_shift = 16;
- else
- extra_shift = 0;
-
- mn10200_insert_operand (&insn, &extension, operand,
- ex.X_add_number, NULL,
- 0, extra_shift);
-
- break;
-
- case O_constant:
- /* If this operand can be promoted, and it doesn't
- fit into the allocated bitfield for this insn,
- then promote it (ie this opcode does not match). */
- if (operand->flags
- & (MN10200_OPERAND_PROMOTE | MN10200_OPERAND_RELAX)
- && !check_operand (insn, operand, ex.X_add_number))
- {
- input_line_pointer = hold;
- str = hold;
- goto error;
- }
-
- mn10200_insert_operand (&insn, &extension, operand,
- ex.X_add_number, NULL,
- 0, 0);
- break;
-
- default:
- /* If this operand can be promoted, then this opcode didn't
- match since we can't know if it needed promotion! */
- if (operand->flags & MN10200_OPERAND_PROMOTE)
- {
- input_line_pointer = hold;
- str = hold;
- goto error;
- }
-
- /* We need to generate a fixup for this expression. */
- if (fc >= MAX_INSN_FIXUPS)
- as_fatal (_("too many fixups"));
- fixups[fc].exp = ex;
- fixups[fc].opindex = *opindex_ptr;
- fixups[fc].reloc = BFD_RELOC_UNUSED;
- ++fc;
- break;
- }
-
-keep_going:
- str = input_line_pointer;
- input_line_pointer = hold;
-
- while (*str == ' ' || *str == ',')
- ++str;
-
- }
-
- /* Make sure we used all the operands! */
- if (*str != ',')
- match = 1;
-
- error:
- if (match == 0)
- {
- next_opcode = opcode + 1;
- if (!strcmp (next_opcode->name, opcode->name))
- {
- opcode = next_opcode;
- continue;
- }
-
- as_bad ("%s", errmsg);
- return;
- }
- break;
- }
-
- while (ISSPACE (*str))
- ++str;
-
- if (*str != '\0')
- as_bad (_("junk at end of line: `%s'"), str);
-
- input_line_pointer = str;
-
- if (opcode->format == FMT_1)
- size = 1;
- else if (opcode->format == FMT_2 || opcode->format == FMT_4)
- size = 2;
- else if (opcode->format == FMT_3 || opcode->format == FMT_5)
- size = 3;
- else if (opcode->format == FMT_6)
- size = 4;
- else if (opcode->format == FMT_7)
- size = 5;
- else
- abort ();
-
- /* Write out the instruction. */
- if (relaxable && fc > 0)
- {
- /* On a 64-bit host the size of an 'int' is not the same
- as the size of a pointer, so we need a union to convert
- the opindex field of the fr_cgen structure into a char *
- so that it can be stored in the frag. We do not have
- to worry about loosing accuracy as we are not going to
- be even close to the 32bit limit of the int. */
- union
- {
- int opindex;
- char * ptr;
- }
- opindex_converter;
- int type;
-
- /* bCC */
- if (size == 2 && opcode->opcode != 0xfc0000)
- {
- /* Handle bra specially. Basically treat it like jmp so
- that we automatically handle 8, 16 and 32 bit offsets
- correctly as well as jumps to an undefined address.
-
- It is also important to not treat it like other bCC
- instructions since the long forms of bra is different
- from other bCC instructions. */
- if (opcode->opcode == 0xea00)
- type = 8;
- else
- type = 0;
- }
- /* jsr */
- else if (size == 3 && opcode->opcode == 0xfd0000)
- type = 6;
- /* jmp */
- else if (size == 3 && opcode->opcode == 0xfc0000)
- type = 8;
- /* bCCx */
- else
- type = 3;
-
- opindex_converter.opindex = fixups[0].opindex;
- f = frag_var (rs_machine_dependent, 8, 8 - size, type,
- fixups[0].exp.X_add_symbol,
- fixups[0].exp.X_add_number,
- opindex_converter.ptr);
- number_to_chars_bigendian (f, insn, size);
- if (8 - size > 4)
- {
- number_to_chars_bigendian (f + size, 0, 4);
- number_to_chars_bigendian (f + size + 4, 0, 8 - size - 4);
- }
- else
- number_to_chars_bigendian (f + size, 0, 8 - size);
- }
- else
- {
- f = frag_more (size);
-
- /* Oh, what a mess. The instruction is in big endian format, but
- 16 and 24bit immediates are little endian! */
- if (opcode->format == FMT_3)
- {
- number_to_chars_bigendian (f, (insn >> 16) & 0xff, 1);
- number_to_chars_littleendian (f + 1, insn & 0xffff, 2);
- }
- else if (opcode->format == FMT_6)
- {
- number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2);
- number_to_chars_littleendian (f + 2, insn & 0xffff, 2);
- }
- else if (opcode->format == FMT_7)
- {
- number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2);
- number_to_chars_littleendian (f + 2, insn & 0xffff, 2);
- number_to_chars_littleendian (f + 4, extension & 0xff, 1);
- }
- else
- number_to_chars_bigendian (f, insn, size > 4 ? 4 : size);
-
- /* Create any fixups. */
- for (i = 0; i < fc; i++)
- {
- const struct mn10200_operand *operand;
-
- operand = &mn10200_operands[fixups[i].opindex];
- if (fixups[i].reloc != BFD_RELOC_UNUSED)
- {
- reloc_howto_type *reloc_howto;
- int size;
- int offset;
- fixS *fixP;
-
- reloc_howto = bfd_reloc_type_lookup (stdoutput,
- fixups[i].reloc);
-
- if (!reloc_howto)
- abort ();
-
- size = bfd_get_reloc_size (reloc_howto);
-
- if (size < 1 || size > 4)
- abort ();
-
- offset = 4 - size;
- fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset,
- size,
- &fixups[i].exp,
- reloc_howto->pc_relative,
- fixups[i].reloc);
-
- /* PC-relative offsets are from the first byte of the
- next instruction, not from the start of the current
- instruction. */
- if (reloc_howto->pc_relative)
- fixP->fx_offset += size;
- }
- else
- {
- int reloc, pcrel, reloc_size, offset;
- fixS *fixP;
-
- reloc = BFD_RELOC_NONE;
- /* How big is the reloc? Remember SPLIT relocs are
- implicitly 32bits. */
- reloc_size = operand->bits;
-
- offset = size - reloc_size / 8;
-
- /* Is the reloc pc-relative? */
- pcrel = (operand->flags & MN10200_OPERAND_PCREL) != 0;
-
- /* Choose a proper BFD relocation type. */
- if (pcrel)
- {
- if (reloc_size == 8)
- reloc = BFD_RELOC_8_PCREL;
- else if (reloc_size == 24)
- reloc = BFD_RELOC_24_PCREL;
- else
- abort ();
- }
- else
- {
- if (reloc_size == 32)
- reloc = BFD_RELOC_32;
- else if (reloc_size == 16)
- reloc = BFD_RELOC_16;
- else if (reloc_size == 8)
- reloc = BFD_RELOC_8;
- else if (reloc_size == 24)
- reloc = BFD_RELOC_24;
- else
- abort ();
- }
-
- /* Convert the size of the reloc into what fix_new_exp
- wants. */
- reloc_size = reloc_size / 8;
- if (reloc_size == 8)
- reloc_size = 0;
- else if (reloc_size == 16)
- reloc_size = 1;
- else if (reloc_size == 32 || reloc_size == 24)
- reloc_size = 2;
-
- fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset,
- reloc_size, &fixups[i].exp, pcrel,
- ((bfd_reloc_code_real_type) reloc));
-
- /* PC-relative offsets are from the first byte of the
- next instruction, not from the start of the current
- instruction. */
- if (pcrel)
- fixP->fx_offset += size;
- }
- }
- }
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 14:19:07 +0000