/* tc-mn10300.c -- Assembler code for the Matsushita 10300
- Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation.
+ Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
+ Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
Boston, MA 02111-1307, USA. */
#include <stdio.h>
-#include <ctype.h>
#include "as.h"
-#include "subsegs.h"
+#include "safe-ctype.h"
+#include "subsegs.h"
#include "opcode/mn10300.h"
#include "dwarf2dbg.h"
\f
int value;
};
-struct dwarf2_line_info debug_line;
+/* Generic assembler global variables which must be defined by all
+ targets. */
-/* Generic assembler global variables which must be defined by all targets. */
-
-/* Characters which always start a comment. */
+/* 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
+/* 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
+/* 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,
+/* Characters which mean that a number is a floating point constant,
as in 0d1.0. */
const char FLT_CHARS[] = "dD";
\f
-
const relax_typeS md_relax_table[] = {
- /* bCC relaxing */
+ /* bCC relaxing */
{0x7f, -0x80, 2, 1},
{0x7fff, -0x8000, 5, 2},
{0x7fffffff, -0x80000000, 7, 0},
- /* bCC relaxing (uncommon cases) */
+ /* bCC relaxing (uncommon cases) */
{0x7f, -0x80, 3, 4},
{0x7fff, -0x8000, 6, 5},
{0x7fffffff, -0x80000000, 8, 0},
- /* call relaxing */
+ /* call relaxing */
{0x7fff, -0x8000, 5, 7},
{0x7fffffff, -0x80000000, 7, 0},
- /* calls relaxing */
+ /* calls relaxing */
{0x7fff, -0x8000, 4, 9},
{0x7fffffff, -0x80000000, 6, 0},
- /* jmp relaxing */
+ /* jmp relaxing */
{0x7f, -0x80, 2, 11},
{0x7fff, -0x8000, 3, 12},
{0x7fffffff, -0x80000000, 5, 0},
};
-/* local functions */
+/* Local functions. */
static void mn10300_insert_operand PARAMS ((unsigned long *, unsigned long *,
const struct mn10300_operand *,
offsetT, char *, unsigned,
const struct mn10300_operand *,
offsetT));
static int reg_name_search PARAMS ((const struct reg_name *, int, const char *));
-static boolean data_register_name PARAMS ((expressionS *expressionP));
-static boolean address_register_name PARAMS ((expressionS *expressionP));
-static boolean other_register_name PARAMS ((expressionS *expressionP));
+static bfd_boolean data_register_name PARAMS ((expressionS *expressionP));
+static bfd_boolean address_register_name PARAMS ((expressionS *expressionP));
+static bfd_boolean other_register_name PARAMS ((expressionS *expressionP));
+static bfd_boolean r_register_name PARAMS ((expressionS *expressionP));
+static bfd_boolean xr_register_name PARAMS ((expressionS *expressionP));
static void set_arch_mach PARAMS ((int));
+/* Set linkrelax here to avoid fixups in most sections. */
+int linkrelax = 1;
+
static int current_machine;
-/* fixups */
+/* Fixups. */
#define MAX_INSN_FIXUPS (5)
struct mn10300_fixup
{
struct option md_longopts[] = {
{NULL, no_argument, NULL, 0}
};
-size_t md_longopts_size = sizeof(md_longopts);
+size_t md_longopts_size = sizeof (md_longopts);
/* The target specific pseudo-ops which we support. */
const pseudo_typeS md_pseudo_table[] =
{
- { "file", dwarf2_directive_file },
- { "loc", dwarf2_directive_loc },
+ { "file", (void (*) PARAMS ((int))) dwarf2_directive_file, 0 },
+ { "loc", dwarf2_directive_loc, 0 },
{ "am30", set_arch_mach, AM30 },
{ "am33", set_arch_mach, AM33 },
{ "mn10300", set_arch_mach, MN103 },
/* Opcode hash table. */
static struct hash_control *mn10300_hash;
-/* This table is sorted. Suitable for searching by a binary search. */
+/* This table is sorted. Suitable for searching by a binary search. */
static const struct reg_name data_registers[] =
{
{ "d0", 0 },
{ "d2", 2 },
{ "d3", 3 },
};
-#define DATA_REG_NAME_CNT (sizeof(data_registers) / sizeof(struct reg_name))
+#define DATA_REG_NAME_CNT \
+ (sizeof (data_registers) / sizeof (struct reg_name))
static const struct reg_name address_registers[] =
{
{ "a2", 2 },
{ "a3", 3 },
};
-#define ADDRESS_REG_NAME_CNT (sizeof(address_registers) / sizeof(struct reg_name))
+
+#define ADDRESS_REG_NAME_CNT \
+ (sizeof (address_registers) / sizeof (struct reg_name))
static const struct reg_name r_registers[] =
{
{ "r8", 8 },
{ "r9", 9 },
};
-#define R_REG_NAME_CNT (sizeof(r_registers) / sizeof(struct reg_name))
+
+#define R_REG_NAME_CNT \
+ (sizeof (r_registers) / sizeof (struct reg_name))
static const struct reg_name xr_registers[] =
{
{ "xr8", 8 },
{ "xr9", 9 },
};
-#define XR_REG_NAME_CNT (sizeof(xr_registers) / sizeof(struct reg_name))
+#define XR_REG_NAME_CNT \
+ (sizeof (xr_registers) / sizeof (struct reg_name))
+/* We abuse the `value' field, that would be otherwise unused, to
+ encode the architecture on which (access to) the register was
+ introduced. FIXME: we should probably warn when we encounter a
+ register name when assembling for an architecture that doesn't
+ support it, before parsing it as a symbol name. */
static const struct reg_name other_registers[] =
{
+ { "epsw", AM33 },
{ "mdr", 0 },
+ { "pc", AM33 },
{ "psw", 0 },
{ "sp", 0 },
};
-#define OTHER_REG_NAME_CNT (sizeof(other_registers) / sizeof(struct reg_name))
+
+#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. */
+ number from the array on success, or -1 on failure. */
static int
reg_name_search (regs, regcount, name)
high = middle - 1;
else if (cmp > 0)
low = middle + 1;
- else
- return regs[middle].value;
+ 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: A expressionS.
+ * 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 boolean
+
+static bfd_boolean
r_register_name (expressionP)
expressionS *expressionP;
{
char *start;
char c;
- /* Find the spelling of the operand */
+ /* Find the spelling of the operand. */
start = name = input_line_pointer;
c = get_symbol_end ();
reg_number = reg_name_search (r_registers, R_REG_NAME_CNT, name);
- /* look to see if it's in the register table */
- if (reg_number >= 0)
+ /* 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 */
+ /* Make the rest nice. */
expressionP->X_add_symbol = NULL;
expressionP->X_op_symbol = NULL;
- *input_line_pointer = c; /* put back the delimiting char */
- return true;
- }
- else
- {
- /* reset the line as if we had not done anything */
- *input_line_pointer = c; /* put back the delimiting char */
- input_line_pointer = start; /* reset input_line pointer */
- return false;
+
+ 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: A expressionS.
+ * 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 boolean
+
+static bfd_boolean
xr_register_name (expressionP)
expressionS *expressionP;
{
char *start;
char c;
- /* Find the spelling of the operand */
+ /* Find the spelling of the operand. */
start = name = input_line_pointer;
c = get_symbol_end ();
reg_number = reg_name_search (xr_registers, XR_REG_NAME_CNT, name);
- /* look to see if it's in the register table */
- if (reg_number >= 0)
+ /* 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 */
+ /* Make the rest nice. */
expressionP->X_add_symbol = NULL;
expressionP->X_op_symbol = NULL;
- *input_line_pointer = c; /* put back the delimiting char */
- return true;
- }
- else
- {
- /* reset the line as if we had not done anything */
- *input_line_pointer = c; /* put back the delimiting char */
- input_line_pointer = start; /* reset input_line pointer */
- return false;
+
+ 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: A expressionS.
+ * 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 boolean
+
+static bfd_boolean
data_register_name (expressionP)
expressionS *expressionP;
{
char *start;
char c;
- /* Find the spelling of the operand */
+ /* 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);
- /* look to see if it's in the register table */
- if (reg_number >= 0)
+ /* 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 */
+ /* Make the rest nice. */
expressionP->X_add_symbol = NULL;
expressionP->X_op_symbol = NULL;
- *input_line_pointer = c; /* put back the delimiting char */
- return true;
- }
- else
- {
- /* reset the line as if we had not done anything */
- *input_line_pointer = c; /* put back the delimiting char */
- input_line_pointer = start; /* reset input_line pointer */
- return false;
+
+ 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: A expressionS.
+ * 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 boolean
+
+static bfd_boolean
address_register_name (expressionP)
expressionS *expressionP;
{
char *start;
char c;
- /* Find the spelling of the operand */
+ /* 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);
- /* look to see if it's in the register table */
- if (reg_number >= 0)
+ /* 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 */
+ /* Make the rest nice. */
expressionP->X_add_symbol = NULL;
expressionP->X_op_symbol = NULL;
- *input_line_pointer = c; /* put back the delimiting char */
- return true;
- }
- else
- {
- /* reset the line as if we had not done anything */
- *input_line_pointer = c; /* put back the delimiting char */
- input_line_pointer = start; /* reset input_line pointer */
- return false;
+
+ 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: A expressionS.
+ * 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 boolean
+
+static bfd_boolean
other_register_name (expressionP)
expressionS *expressionP;
{
char *start;
char c;
- /* Find the spelling of the operand */
+ /* 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);
- /* look to see if it's in the register table */
- if (reg_number >= 0)
+ /* Put back the delimiting char. */
+ *input_line_pointer = c;
+
+ /* Look to see if it's in the register table. */
+ if (reg_number == 0
+ || (reg_number == AM33 && HAVE_AM33))
{
expressionP->X_op = O_register;
- expressionP->X_add_number = reg_number;
+ expressionP->X_add_number = 0;
- /* make the rest nice */
+ /* Make the rest nice. */
expressionP->X_add_symbol = NULL;
expressionP->X_op_symbol = NULL;
- *input_line_pointer = c; /* put back the delimiting char */
- return true;
- }
- else
- {
- /* reset the line as if we had not done anything */
- *input_line_pointer = c; /* put back the delimiting char */
- input_line_pointer = start; /* reset input_line pointer */
- return false;
+
+ return TRUE;
}
+
+ /* Reset the line as if we had not done anything. */
+ input_line_pointer = start;
+ return FALSE;
}
void
md_show_usage (stream)
- FILE *stream;
+ FILE *stream;
{
- fprintf(stream, _("MN10300 options:\n\
+ fprintf (stream, _("MN10300 options:\n\
none yet\n"));
-}
+}
int
md_parse_option (c, arg)
- int c;
- char *arg;
+ int c ATTRIBUTE_UNUSED;
+ char *arg ATTRIBUTE_UNUSED;
{
return 0;
}
symbolS *
md_undefined_symbol (name)
- char *name;
+ char *name ATTRIBUTE_UNUSED;
{
return 0;
}
char *
md_atof (type, litp, sizep)
- int type;
- char *litp;
- int *sizep;
+ int type;
+ char *litp;
+ int *sizep;
{
int prec;
LITTLENUM_TYPE words[4];
*sizep = 0;
return "bad call to md_atof";
}
-
+
t = atof_ieee (input_line_pointer, type, words);
if (t)
input_line_pointer = t;
return NULL;
}
-
void
md_convert_frag (abfd, sec, fragP)
- bfd *abfd;
- asection *sec;
- fragS *fragP;
+ bfd *abfd ATTRIBUTE_UNUSED;
+ asection *sec;
+ fragS *fragP;
{
static unsigned long label_count = 0;
char buf[40];
fragP->fr_literal[offset] = opcode;
/* Create a fixup for the reversed conditional branch. */
- sprintf (buf, ".%s_%d", FAKE_LABEL_NAME, label_count++);
+ 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, 1, BFD_RELOC_8_PCREL);
fragP->fr_literal[offset] = opcode;
/* Create a fixup for the reversed conditional branch. */
- sprintf (buf, ".%s_%d", FAKE_LABEL_NAME, label_count++);
+ 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, 1, BFD_RELOC_8_PCREL);
fragP->fr_literal[offset + 1] = opcode;
/* Create a fixup for the reversed conditional branch. */
- sprintf (buf, ".%s_%d", FAKE_LABEL_NAME, label_count++);
+ 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 + 2, 1, BFD_RELOC_8_PCREL);
fragP->fr_literal[offset + 1] = opcode;
/* Create a fixup for the reversed conditional branch. */
- sprintf (buf, ".%s_%d", FAKE_LABEL_NAME, label_count++);
+ 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 + 2, 1, BFD_RELOC_8_PCREL);
char *prev_name = "";
register const struct mn10300_opcode *op;
- mn10300_hash = hash_new();
+ mn10300_hash = hash_new ();
/* Insert unique names into hash table. The MN10300 instruction set
has many identical opcode names that have different opcodes based
op = mn10300_opcodes;
while (op->name)
{
- if (strcmp (prev_name, op->name))
+ if (strcmp (prev_name, op->name))
{
prev_name = (char *) op->name;
hash_insert (mn10300_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;
-
/* Set the default machine type. */
if (!bfd_set_arch_mach (stdoutput, bfd_arch_mn10300, MN103))
as_warn (_("could not set architecture and machine"));
}
void
-md_assemble (str)
+md_assemble (str)
char *str;
{
char *s;
struct mn10300_opcode *next_opcode;
const unsigned char *opindex_ptr;
int next_opindex, relaxable;
- unsigned long insn, extension, size = 0, real_size;
+ unsigned long insn, extension, size = 0;
char *f;
int i;
int match;
/* Get the opcode. */
- for (s = str; *s != '\0' && ! isspace (*s); s++)
+ for (s = str; *s != '\0' && !ISSPACE (*s); s++)
;
if (*s != '\0')
*s++ = '\0';
- /* find the first opcode with the proper name */
- opcode = (struct mn10300_opcode *)hash_find (mn10300_hash, str);
+ /* Find the first opcode with the proper name. */
+ opcode = (struct mn10300_opcode *) hash_find (mn10300_hash, str);
if (opcode == NULL)
{
as_bad (_("Unrecognized opcode: `%s'"), str);
}
str = s;
- while (isspace (*str))
+ while (ISSPACE (*str))
++str;
input_line_pointer = str;
- for(;;)
+ for (;;)
{
const char *errmsg;
int op_idx;
char *hold;
int extra_shift = 0;
-
errmsg = _("Invalid opcode/operands");
/* Reset the array of register operands. */
if (operand->flags & MN10300_OPERAND_RELAX)
relaxable = 1;
- /* Gather the operand. */
+ /* Gather the operand. */
hold = input_line_pointer;
input_line_pointer = str;
/* Eat the '['. */
input_line_pointer++;
-
+
/* We used to reject a null register list here; however,
- we accept it now so the compiler can emit "call" instructions
- for all calls to named functions.
+ we accept it now so the compiler can emit "call"
+ instructions for all calls to named functions.
The linker can then fill in the appropriate bits for the
register list and stack size or change the instruction
expression (&ex);
}
- switch (ex.X_op)
+ switch (ex.X_op)
{
case O_illegal:
errmsg = _("illegal operand");
str = hold;
goto error;
}
-
+
if (opcode->format == FMT_D1 || opcode->format == FMT_S1)
extra_shift = 8;
else if (opcode->format == FMT_D2
extra_shift = 8;
else
extra_shift = 0;
-
+
mn10300_insert_operand (&insn, &extension, operand,
ex.X_add_number, (char *) NULL,
0, extra_shift);
-
/* And note the register number in the register array. */
mn10300_reg_operands[op_idx - 1] = ex.X_add_number;
break;
then promote it (ie this opcode does not match). */
if (operand->flags
& (MN10300_OPERAND_PROMOTE | MN10300_OPERAND_RELAX)
- && ! check_operand (insn, operand, ex.X_add_number))
+ && !check_operand (insn, operand, ex.X_add_number))
{
input_line_pointer = hold;
str = hold;
error:
if (match == 0)
- {
+ {
next_opcode = opcode + 1;
- if (!strcmp(next_opcode->name, opcode->name))
+ if (!strcmp (next_opcode->name, opcode->name))
{
opcode = next_opcode;
continue;
}
-
+
as_bad ("%s", errmsg);
return;
- }
+ }
break;
}
-
- while (isspace (*str))
+
+ while (ISSPACE (*str))
++str;
if (*str != '\0')
if (opcode->format == FMT_D4)
size = 6;
- real_size = size;
-
if (relaxable && fc > 0)
{
int type;
- /* bCC */
+ /* We want to anchor the line info to the previous frag (if
+ there isn't one, create it), so that, when the insn is
+ resized, we still get the right address for the beginning of
+ the region. */
+ f = frag_more (0);
+ dwarf2_emit_insn (0);
+
+ /* bCC */
if (size == 2)
{
/* Handle bra specially. Basically treat it like jmp so
else
type = 0;
}
- /* call */
+ /* call */
else if (size == 5)
- type = 6;
- /* calls */
+ type = 6;
+ /* calls */
else if (size == 4)
type = 8;
- /* jmp */
+ /* jmp */
else if (size == 3 && opcode->opcode == 0xcc0000)
type = 10;
- /* bCC (uncommon cases) */
+ /* bCC (uncommon cases) */
else
type = 3;
fixups[0].exp.X_add_symbol,
fixups[0].exp.X_add_number,
(char *)fixups[0].opindex);
-
+
/* This is pretty hokey. We basically just care about the
opcode, so we have to write out the first word big endian.
else if (opcode->format == FMT_D4)
{
unsigned long temp = ((insn & 0xffff) << 16) | (extension & 0xffff);
+
number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2);
number_to_chars_littleendian (f + 2, temp, 4);
}
else if (opcode->format == FMT_D5)
{
- unsigned long temp = ((insn & 0xffff) << 16)
- | ((extension >> 8) & 0xffff);
+ unsigned long temp = (((insn & 0xffff) << 16)
+ | ((extension >> 8) & 0xffff));
+
number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2);
number_to_chars_littleendian (f + 2, temp, 4);
number_to_chars_bigendian (f + 6, extension & 0xff, 1);
}
else if (opcode->format == FMT_D8)
{
- unsigned long temp = ((insn & 0xff) << 16) | (extension & 0xffff);
- number_to_chars_bigendian (f, (insn >> 8) & 0xffffff, 3);
- number_to_chars_bigendian (f + 3, (temp & 0xff), 1);
- number_to_chars_littleendian (f + 4, temp >> 8, 2);
+ unsigned long temp = ((insn & 0xff) << 16) | (extension & 0xffff);
+
+ number_to_chars_bigendian (f, (insn >> 8) & 0xffffff, 3);
+ number_to_chars_bigendian (f + 3, (temp & 0xff), 1);
+ number_to_chars_littleendian (f + 4, temp >> 8, 2);
}
else if (opcode->format == FMT_D9)
{
- unsigned long temp = ((insn & 0xff) << 24) | (extension & 0xffffff);
- number_to_chars_bigendian (f, (insn >> 8) & 0xffffff, 3);
- number_to_chars_littleendian (f + 3, temp, 4);
+ unsigned long temp = ((insn & 0xff) << 24) | (extension & 0xffffff);
+
+ number_to_chars_bigendian (f, (insn >> 8) & 0xffffff, 3);
+ number_to_chars_littleendian (f + 3, temp, 4);
}
/* Create any fixups. */
int offset;
fixS *fixP;
- reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc);
+ reloc_howto = bfd_reloc_type_lookup (stdoutput,
+ fixups[i].reloc);
if (!reloc_howto)
- abort();
-
+ abort ();
+
size = bfd_get_reloc_size (reloc_howto);
if (size < 1 || size > 4)
- abort();
+ abort ();
offset = 4 - size;
fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset,
/* Is the reloc pc-relative? */
pcrel = (operand->flags & MN10300_OPERAND_PCREL) != 0;
- /* Gross. This disgusting hack is to make sure we
- get the right offset for the 16/32 bit reloc in
- "call" instructions. Basically they're a pain
- because the reloc isn't at the end of the instruction. */
- if ((size == 5 || size == 7)
- && (((insn >> 24) & 0xff) == 0xcd
- || ((insn >> 24) & 0xff) == 0xdd))
- size -= 2;
-
- /* Similarly for certain bit instructions which don't
- hav their 32bit reloc at the tail of the instruction. */
- if (size == 7
- && (((insn >> 16) & 0xffff) == 0xfe00
- || ((insn >> 16) & 0xffff) == 0xfe01
- || ((insn >> 16) & 0xffff) == 0xfe02))
- size -= 1;
-
- offset = size - reloc_size / 8;
+ offset = size - (reloc_size + operand->shift) / 8;
/* Choose a proper BFD relocation type. */
if (pcrel)
fixP->fx_offset += offset;
}
}
- }
-
- if (debug_type == DEBUG_DWARF2)
- {
- bfd_vma addr;
-
- /* First update the notion of the current source line. */
- dwarf2_where (&debug_line);
- /* We want the offset of the start of this instruction within the
- the current frag. */
- addr = frag_now->fr_address + frag_now_fix () - real_size;
-
- /* And record the information. */
- dwarf2_gen_line_info (addr, &debug_line);
+ dwarf2_emit_insn (size);
}
}
+/* If while processing a fixup, a reloc really needs to be created
+ then it is done here. */
-/* if while processing a fixup, a reloc really needs to be created */
-/* then it is done here */
-
arelent *
tc_gen_reloc (seg, fixp)
- asection *seg;
+ asection *seg ATTRIBUTE_UNUSED;
fixS *fixp;
{
arelent *reloc;
if (reloc->howto == (reloc_howto_type *) NULL)
{
as_bad_where (fixp->fx_file, fixp->fx_line,
- _("reloc %d not supported by object file format"),
- (int)fixp->fx_r_type);
+ _("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;
if (fixp->fx_addsy && fixp->fx_subsy)
{
-
+ reloc->sym_ptr_ptr = NULL;
+
+ /* If we got a difference between two symbols, and the
+ subtracted symbol is in the current section, use a
+ PC-relative relocation. If both symbols are in the same
+ section, the difference would have already been simplified
+ to a constant. */
+ if (S_GET_SEGMENT (fixp->fx_subsy) == seg)
+ {
+ reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
+ *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
+ reloc->addend = (reloc->address - S_GET_VALUE (fixp->fx_subsy)
+ + fixp->fx_offset);
+
+ switch (fixp->fx_r_type)
+ {
+ case BFD_RELOC_8:
+ reloc->howto = bfd_reloc_type_lookup (stdoutput,
+ BFD_RELOC_8_PCREL);
+ return reloc;
+
+ case BFD_RELOC_16:
+ reloc->howto = bfd_reloc_type_lookup (stdoutput,
+ BFD_RELOC_16_PCREL);
+ return reloc;
+
+ case BFD_RELOC_24:
+ reloc->howto = bfd_reloc_type_lookup (stdoutput,
+ BFD_RELOC_24_PCREL);
+ return reloc;
+
+ case BFD_RELOC_32:
+ reloc->howto = bfd_reloc_type_lookup (stdoutput,
+ BFD_RELOC_32_PCREL);
+ return reloc;
+
+ default:
+ /* Try to compute the absolute value below. */
+ break;
+ }
+ }
+
if ((S_GET_SEGMENT (fixp->fx_addsy) != S_GET_SEGMENT (fixp->fx_subsy))
|| S_GET_SEGMENT (fixp->fx_addsy) == undefined_section)
{
as_bad_where (fixp->fx_file, fixp->fx_line,
"Difference of symbols in different sections is not supported");
- return NULL;
}
+ else
+ {
+ char *fixpos = fixp->fx_where + fixp->fx_frag->fr_literal;
- reloc->sym_ptr_ptr = &bfd_abs_symbol;
- reloc->addend = (S_GET_VALUE (fixp->fx_addsy)
- - S_GET_VALUE (fixp->fx_subsy) + fixp->fx_offset);
+ reloc->addend = (S_GET_VALUE (fixp->fx_addsy)
+ - S_GET_VALUE (fixp->fx_subsy) + fixp->fx_offset);
+
+ switch (fixp->fx_r_type)
+ {
+ case BFD_RELOC_8:
+ md_number_to_chars (fixpos, reloc->addend, 1);
+ break;
+
+ case BFD_RELOC_16:
+ md_number_to_chars (fixpos, reloc->addend, 2);
+ break;
+
+ case BFD_RELOC_24:
+ md_number_to_chars (fixpos, reloc->addend, 3);
+ break;
+
+ case BFD_RELOC_32:
+ md_number_to_chars (fixpos, reloc->addend, 4);
+ break;
+
+ default:
+ reloc->sym_ptr_ptr = (asymbol **) &bfd_abs_symbol;
+ return reloc;
+ }
+ }
+
+ if (reloc->sym_ptr_ptr)
+ free (reloc->sym_ptr_ptr);
+ free (reloc);
+ return NULL;
}
- else
+ else
{
- reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof( asymbol *));
+ reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
*reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
reloc->addend = fixp->fx_offset;
}
fragS *fragp;
asection *seg;
{
- if (fragp->fr_subtype == 0)
- return 2;
- if (fragp->fr_subtype == 3)
- return 3;
- if (fragp->fr_subtype == 6)
- {
- if (!S_IS_DEFINED (fragp->fr_symbol)
- || seg != S_GET_SEGMENT (fragp->fr_symbol))
- {
- fragp->fr_subtype = 7;
- return 7;
- }
- else
- return 5;
- }
- if (fragp->fr_subtype == 8)
- {
- if (!S_IS_DEFINED (fragp->fr_symbol)
- || seg != S_GET_SEGMENT (fragp->fr_symbol))
- {
- fragp->fr_subtype = 9;
- return 6;
- }
- else
- return 4;
- }
- if (fragp->fr_subtype == 10)
- {
- if (!S_IS_DEFINED (fragp->fr_symbol)
- || seg != S_GET_SEGMENT (fragp->fr_symbol))
- {
- fragp->fr_subtype = 12;
- return 5;
- }
- else
- return 2;
- }
-}
+ 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 = 9;
+ else if (fragp->fr_subtype == 10
+ && (!S_IS_DEFINED (fragp->fr_symbol)
+ || seg != S_GET_SEGMENT (fragp->fr_symbol)))
+ fragp->fr_subtype = 12;
+
+ 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 (fixp)
fixS *fixp;
{
- return fixp->fx_frag->fr_address;
-#if 0
- if (fixp->fx_addsy != (symbolS *) NULL && ! S_IS_DEFINED (fixp->fx_addsy))
+ if (fixp->fx_addsy != (symbolS *) NULL && !S_IS_DEFINED (fixp->fx_addsy))
{
/* The symbol is undefined. Let the linker figure it out. */
return 0;
}
return fixp->fx_frag->fr_address + fixp->fx_where;
-#endif
}
-int
-md_apply_fix3 (fixp, valuep, seg)
- fixS *fixp;
- valueT *valuep;
+void
+md_apply_fix3 (fixP, valP, seg)
+ fixS * fixP;
+ valueT * valP;
segT seg;
{
- /* We shouldn't ever get here because linkrelax is nonzero. */
- abort ();
- fixp->fx_done = 1;
- return 0;
+ char * fixpos = fixP->fx_where + fixP->fx_frag->fr_literal;
+ int size = 0;
+ int value = (int) * valP;
+
+ assert (fixP->fx_r_type < BFD_RELOC_UNUSED);
+
+ /* This should never happen. */
+ if (seg->flags & SEC_ALLOC)
+ abort ();
+
+ /* The value we are passed in *valuep includes the symbol values.
+ Since we are using BFD_ASSEMBLER, if we are doing this relocation
+ the code in write.c is going to call bfd_install_relocation, which
+ is also going to use the symbol value. That means that if the
+ reloc is fully resolved we want to use *valuep since
+ bfd_install_relocation is not being used.
+
+ However, if the reloc is not fully resolved we do not want to use
+ *valuep, and must use fx_offset instead. However, if the reloc
+ is PC relative, we do want to use *valuep since it includes the
+ result of md_pcrel_from. */
+ if (fixP->fx_addsy != (symbolS *) NULL && ! fixP->fx_pcrel)
+ value = fixP->fx_offset;
+
+ /* If the fix is relative to a symbol which is not defined, or not
+ in the same segment as the fix, we cannot resolve it here. */
+ if (fixP->fx_addsy != NULL
+ && (! S_IS_DEFINED (fixP->fx_addsy)
+ || (S_GET_SEGMENT (fixP->fx_addsy) != seg)))
+ {
+ fixP->fx_done = 0;
+ return;
+ }
+
+ switch (fixP->fx_r_type)
+ {
+ case BFD_RELOC_8:
+ case BFD_RELOC_8_PCREL:
+ size = 1;
+ break;
+
+ case BFD_RELOC_16:
+ case BFD_RELOC_16_PCREL:
+ size = 2;
+ break;
+
+ case BFD_RELOC_32:
+ case BFD_RELOC_32_PCREL:
+ size = 4;
+ break;
+
+ case BFD_RELOC_VTABLE_INHERIT:
+ case BFD_RELOC_VTABLE_ENTRY:
+ fixP->fx_done = 0;
+ return;
+
+ case BFD_RELOC_NONE:
+ default:
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ _("Bad relocation fixup type (%d)"), fixP->fx_r_type);
+ }
+
+ md_number_to_chars (fixpos, value, size);
+
+ /* If a symbol remains, pass the fixup, as a reloc, onto the linker. */
+ if (fixP->fx_addsy == NULL)
+ fixP->fx_done = 1;
+}
+
+/* Return nonzero if the fixup in FIXP will require a relocation,
+ even it if appears that the fixup could be completely handled
+ within GAS. */
+
+int
+mn10300_force_relocation (fixp)
+ struct fix *fixp;
+{
+ if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT
+ || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
+ return 1;
+
+ return S_FORCE_RELOC (fixp->fx_addsy);
+}
+
+/* Return zero if the fixup in fixp should be left alone and not
+ adjusted. */
+
+bfd_boolean
+mn10300_fix_adjustable (fixp)
+ struct fix *fixp;
+{
+ if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT
+ || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
+ return 0;
+
+ /* Do not adjust relocations involving symbols in code sections,
+ because it breaks linker relaxations. This could be fixed in the
+ linker, but this fix is simpler, and it pretty much only affects
+ object size a little bit. */
+ if (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_CODE)
+ return 0;
+
+ return 1;
}
/* Insert an operand value into an instruction. */
min = - (1 << (bits - 1));
}
else
- {
- max = (1 << bits) - 1;
- min = 0;
- }
+ {
+ max = (1 << bits) - 1;
+ min = 0;
+ }
test = val;
-
if (test < (offsetT) min || test > (offsetT) max)
- {
- const char *err =
- _("operand out of range (%s not between %ld and %ld)");
- char buf[100];
-
- sprint_value (buf, test);
- if (file == (char *) NULL)
- as_warn (err, buf, min, max);
- else
- as_warn_where (file, line, err, buf, min, max);
- }
+ {
+ const char *err =
+ _("operand out of range (%s not between %ld and %ld)");
+ char buf[100];
+
+ sprint_value (buf, test);
+ if (file == (char *) NULL)
+ as_warn (err, buf, min, max);
+ else
+ as_warn_where (file, line, err, buf, min, max);
+ }
}
if ((operand->flags & MN10300_OPERAND_SPLIT) != 0)
static unsigned long
check_operand (insn, operand, val)
- unsigned long insn;
+ unsigned long insn ATTRIBUTE_UNUSED;
const struct mn10300_operand *operand;
offsetT val;
{
min = - (1 << (bits - 1));
}
else
- {
- max = (1 << bits) - 1;
- min = 0;
- }
+ {
+ max = (1 << bits) - 1;
+ min = 0;
+ }
test = val;
-
if (test < (offsetT) min || test > (offsetT) max)
return 0;
else
current_machine = mach;
}
-
-void
-mn10300_finalize ()
-{
- if (debug_type == DEBUG_DWARF2)
- dwarf2_finish ();
-}
projects / binutils.git / blobdiff