/* Assembly backend for the OpenRISC 1000.
- Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2005, 2007, 2009, 2010
+ Free Software Foundation, Inc.
Contributed by Damjan Lampret <lampret@opencores.org>.
Modified bu Johan Rydberg, <johan.rydberg@netinsight.se>.
Based upon a29k port.
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)
+ the Free Software Foundation; either version 3, or (at your option)
any later version.
GAS is distributed in the hope that it will be useful,
#include "safe-ctype.h"
#include "as.h"
#include "opcode/or32.h"
-
-#ifdef BFD_ASSEMBLER
#include "elf/or32.h"
-#endif
#define DEBUG 0
int md_short_jump_size = 4;
int md_long_jump_size = 4;
-#if defined(BFD_HEADERS)
-#ifdef RELSZ
-const int md_reloc_size = RELSZ; /* Coff headers. */
-#else
-const int md_reloc_size = 12; /* Something else headers. */
-#endif
-#else
-const int md_reloc_size = 12; /* Not bfdized. */
-#endif
-
/* This array holds the chars that always start a comment.
If the pre-processor is disabled, these aren't very useful. */
const char comment_chars[] = "#";
md_number_to_chars (toP, the_insn.opcode, 4);
/* Put out the symbol-dependent stuff. */
-#ifdef BFD_ASSEMBLER
if (the_insn.reloc != BFD_RELOC_NONE)
-#else
- if (the_insn.reloc != NO_RELOC)
-#endif
{
fix_new_exp (frag_now,
(toP - frag_now->fr_literal + the_insn.reloc_offset),
static int mask_or_shift = 0;
-#ifdef BFD_ASSEMBLER
static char *
parse_operand (char *s, expressionS *operandp, int opt)
{
char *save = input_line_pointer;
- char *new;
+ char *new_pointer;
#if DEBUG
printf (" PROCESS NEW OPERAND(%s) == %c (%d)\n", s, opt ? opt : '!', opt);
}
}
- new = input_line_pointer;
+ new_pointer = input_line_pointer;
input_line_pointer = save;
#if DEBUG
- printf (" %s=parse_operand(%s): operandp->X_op = %u\n", new, s, operandp->X_op);
+ printf (" %s=parse_operand(%s): operandp->X_op = %u\n", new_pointer, s,
+ operandp->X_op);
#endif
- return new;
+ return new_pointer;
}
-#else
-
-static char *
-parse_operand (char *s, expressionS *operandp, int opt)
-{
- char *save = input_line_pointer;
- char *new;
-
-#if DEBUG
- printf (" PROCESS NEW OPERAND(%s) == %c (%d)\n", s, opt ? opt : '!', opt);
-#endif
-
- input_line_pointer = s;
-
- if (strncasecmp (s, "HI(", 3) == 0)
- {
- waiting_for_shift = 1;
- mask_or_shift = RELOC_CONSTH;
-
- input_line_pointer += 3;
- }
- else if (strncasecmp (s, "LO(", 3) == 0)
- {
- mask_or_shift = RELOC_CONST;
-
- input_line_pointer += 3;
- }
- else
- mask_or_shift = 0;
-
- expression (operandp);
-
- if (operandp->X_op == O_absent)
- {
- if (! opt)
- as_bad (_("missing operand"));
- else
- {
- operandp->X_add_number = 0;
- operandp->X_op = O_constant;
- }
- }
-
- new = input_line_pointer;
- input_line_pointer = save;
-
- if ((operandp->X_op == O_symbol) && (*s != '_'))
- {
-#if DEBUG
- printf ("symbol: '%s'\n", save);
-#endif
-
- for (save = s; s < new; s++)
- if ((*s == REGISTER_PREFIX) && (*(s + 1) == 'r')) /* Register prefix. */
- s++;
-
- if ((*s == 'r') && ISDIGIT (*(s + 1)))
- {
- operandp->X_add_number = strtol (s + 1, NULL, 10);
- operandp->X_op = O_register;
- }
- s = save;
- }
-
-#if DEBUG
- printf (" %s=parse_operand(%s): operandp->X_op = %u\n", new, s, operandp->X_op);
-#endif
-
- return new;
-}
-#endif
/* Instruction parsing. Takes a string containing the opcode.
Operands are at input_line_pointer. Output is in the_insn.
Warnings or errors are generated. */
-#ifdef BFD_ASSEMBLER
static void
machine_ip (char *str)
{
char *s;
const char *args;
const struct machine_opcode *insn;
- char *argsStart;
unsigned long opcode;
expressionS the_operand;
expressionS *operand = &the_operand;
return;
}
- argsStart = s;
opcode = 0;
memset (&the_insn, '\0', sizeof (the_insn));
the_insn.reloc = BFD_RELOC_NONE;
}
}
-#else
-
-static void
-machine_ip (char *str)
-{
- char *s;
- const char *args;
- const struct machine_opcode *insn;
- char *argsStart;
- unsigned long opcode;
- expressionS the_operand;
- expressionS *operand = &the_operand;
- unsigned int regno;
- int reloc = NO_RELOC;
-
-#if DEBUG
- printf ("machine_ip(%s)\n", str);
-#endif
-
- s = str;
- for (; ISALNUM (*s) || *s == '.'; ++s)
- if (ISUPPER (*s))
- *s = TOLOWER (*s);
-
- switch (*s)
- {
- case '\0':
- break;
-
- case ' ': /* FIXME-SOMEDAY more whitespace. */
- *s++ = '\0';
- break;
-
- default:
- as_bad (_("unknown opcode1: `%s'"), str);
- return;
- }
-
- if ((insn = (struct machine_opcode *) hash_find (op_hash, str)) == NULL)
- {
- as_bad (_("unknown opcode2 `%s'."), str);
- return;
- }
-
- argsStart = s;
- opcode = 0;
- memset (&the_insn, '\0', sizeof (the_insn));
- the_insn.reloc = NO_RELOC;
-
- reloc = NO_RELOC;
-
- /* Build the opcode, checking as we go to make sure that the
- operands match.
-
- If an operand matches, we modify the_insn or opcode appropriately,
- and do a "continue". If an operand fails to match, we "break". */
- if (insn->args[0] != '\0')
- /* Prime the pump. */
- s = parse_operand (s, operand,
- insn->args[0] == 'I'
- || strcmp (insn->name, "l.nop") == 0);
-
- for (args = insn->args;; ++args)
- {
-#if DEBUG
- printf (" args = %s\n", args);
-#endif
- switch (*args)
- {
- case '\0': /* End of args. */
- /* We have have 0 args, do the bazoooka! */
- if (args == insn->args)
- encode (insn, &opcode, 0, 0);
-
- if (*s == '\0')
- {
- /* We are truly done. */
- the_insn.opcode = opcode;
- if (check_invalid_opcode (opcode))
- as_bad (_("instruction not allowed: %s"), str);
- return;
- }
- as_bad (_("too many operands: %s"), s);
- break;
-
- case ',': /* Must match a comma. */
- if (*s++ == ',')
- {
- reloc = NO_RELOC;
-
- /* Parse next operand. */
- s = parse_operand (s, operand, args[1] == 'I');
-#if DEBUG
- printf (" ',' case: operand->X_add_number = %d, *args = %s, *s = %s\n",
- operand->X_add_number, args, s);
-#endif
- continue;
- }
- break;
-
- case '(': /* Must match a (. */
- s = parse_operand (s, operand, args[1] == 'I');
- continue;
-
- case ')': /* Must match a ). */
- continue;
-
- case 'r': /* A general register. */
- args++;
-
- if (operand->X_op != O_register)
- break; /* Only registers. */
-
- know (operand->X_add_symbol == 0);
- know (operand->X_op_symbol == 0);
- regno = operand->X_add_number;
- encode (insn, &opcode, regno, *args);
-#if DEBUG
- printf (" r: operand->X_op = %d\n", operand->X_op);
-#endif
- continue;
-
- default:
- /* if (! ISALPHA (*args))
- break; */ /* Only immediate values. */
-
- if (mask_or_shift)
- {
-#if DEBUG
- printf ("mask_or_shift = %d\n", mask_or_shift);
-#endif
- reloc = mask_or_shift;
- }
- mask_or_shift = 0;
-
- if (strncasecmp (args, "LO(", 3) == 0)
- {
-#if DEBUG
- printf ("reloc_const\n");
-#endif
- reloc = RELOC_CONST;
- }
- else if (strncasecmp (args, "HI(", 3) == 0)
- {
-#if DEBUG
- printf ("reloc_consth\n");
-#endif
- reloc = RELOC_CONSTH;
- }
-
- if (*s == '(')
- operand->X_op = O_constant;
- else if (*s == ')')
- s += 1;
-#if DEBUG
- printf (" default case: operand->X_add_number = %d, *args = %s, *s = %s\n",
- operand->X_add_number, args, s);
-#endif
- if (operand->X_op == O_constant)
- {
- if (reloc == NO_RELOC)
- {
- unsigned long v, mask;
-
- mask = 0x3ffffff;
- v = abs (operand->X_add_number) & ~ mask;
- if (v)
- as_bad (_("call/jmp target out of range (1)"));
- }
-
- if (reloc == RELOC_CONSTH)
- operand->X_add_number = ((operand->X_add_number>>16) & 0xffff);
-
- the_insn.pcrel = 0;
- encode (insn, &opcode, operand->X_add_number, *args);
- /* the_insn.reloc = NO_RELOC; */
- continue;
- }
-
- if (reloc == NO_RELOC)
- the_insn.reloc = RELOC_JUMPTARG;
- else
- the_insn.reloc = reloc;
-#if DEBUG
- printf (" reloc sym=%d\n", the_insn.reloc);
- printf (" NO_RELOC=%d\n", NO_RELOC);
-#endif
- the_insn.exp = *operand;
-
- /* the_insn.reloc_offset = 1; */
- the_insn.pcrel = 1; /* Assume PC-relative jump. */
-
- /* FIXME-SOON, Do we figure out whether abs later, after
- know sym val? */
- if (reloc == RELOC_CONST || reloc == RELOC_CONSTH)
- the_insn.pcrel = 0;
-
- encode (insn, &opcode, operand->X_add_number, *args);
- continue;
- }
-
- /* Types or values of args don't match. */
- as_bad (_("invalid operands"));
- return;
- }
-}
-#endif
-
-/* This is identical to the md_atof in m68k.c. I think this is right,
- but I'm not sure.
-
- 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 (int type, char * litP, int * sizeP)
{
- int prec;
- LITTLENUM_TYPE words[MAX_LITTLENUMS];
- LITTLENUM_TYPE *wordP;
- char *t;
-
- switch (type)
- {
- case 'f':
- case 'F':
- case 's':
- case 'S':
- prec = 2;
- break;
-
- case 'd':
- case 'D':
- case 'r':
- case 'R':
- prec = 4;
- break;
-
- case 'x':
- case 'X':
- prec = 6;
- break;
-
- case 'p':
- case 'P':
- prec = 6;
- 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 * sizeof (LITTLENUM_TYPE);
-
- for (wordP = words; prec--;)
- {
- md_number_to_chars (litP, (valueT) (*wordP++), sizeof (LITTLENUM_TYPE));
- litP += sizeof (LITTLENUM_TYPE);
- }
-
- return NULL;
+ return ieee_md_atof (type, litP, sizeP, TRUE);
}
/* Write out big-endian. */
number_to_chars_bigendian (buf, val, n);
}
-#ifdef BFD_ASSEMBLER
void
-md_apply_fix3 (fixS * fixP, valueT * val, segT seg ATTRIBUTE_UNUSED)
+md_apply_fix (fixS * fixP, valueT * val, segT seg ATTRIBUTE_UNUSED)
{
char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
long t_val;
fixP->fx_addnumber = t_val; /* Remember value for emit_reloc. */
- know (fixP->fx_size == 4);
- know (fixP->fx_r_type < BFD_RELOC_NONE);
-
switch (fixP->fx_r_type)
{
case BFD_RELOC_32: /* XXXXXXXX pattern in a word. */
if (fixP->fx_addsy == (symbolS *) NULL)
fixP->fx_done = 1;
}
-#else
-void
-md_apply_fix3 (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
-{
- long val = *valP;
- char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
-
-#if DEBUG
- printf ("md_apply_fix val:%x\n", val);
-#endif
-
- fixP->fx_addnumber = val; /* Remember value for emit_reloc. */
-
- know (fixP->fx_size == 4);
- know (fixP->fx_r_type < NO_RELOC);
-
- /* This is a hack. There should be a better way to handle this. */
- if (fixP->fx_r_type == RELOC_WDISP30 && fixP->fx_addsy)
- val += fixP->fx_where + fixP->fx_frag->fr_address;
-
- switch (fixP->fx_r_type)
- {
- case RELOC_32:
- buf[0] = val >> 24;
- buf[1] = val >> 16;
- buf[2] = val >> 8;
- buf[3] = val;
- break;
-
- case RELOC_8:
- buf[0] = val;
- break;
-
- case RELOC_WDISP30:
- val = (val >> 2) + 1;
- buf[0] |= (val >> 24) & 0x3f;
- buf[1] = (val >> 16);
- buf[2] = val >> 8;
- buf[3] = val;
- break;
-
- case RELOC_HI22:
- buf[1] |= (val >> 26) & 0x3f;
- buf[2] = val >> 18;
- buf[3] = val >> 10;
- break;
-
- case RELOC_LO10:
- buf[2] |= (val >> 8) & 0x03;
- buf[3] = val;
- break;
-
- case RELOC_BASE13:
- buf[2] |= (val >> 8) & 0x1f;
- buf[3] = val;
- break;
-
- case RELOC_WDISP22:
- val = (val >> 2) + 1;
- /* FALLTHROUGH */
- case RELOC_BASE22:
- buf[1] |= (val >> 16) & 0x3f;
- buf[2] = val >> 8;
- buf[3] = val;
- break;
-
- case RELOC_JUMPTARG: /* 0000XXXX pattern in a word. */
- if (!fixP->fx_done)
- {
- /* The linker tries to support both AMD and old GNU style
- R_IREL relocs. That means that if the addend is exactly
- the negative of the address within the section, the
- linker will not handle it correctly. */
- }
- else if (fixP->fx_pcrel)
- {
- long v = val >> 28;
- if (v != 0 && v != -1)
- as_bad_where (fixP->fx_file, fixP->fx_line,
- _("call/jmp target out of range (2)"));
- }
- else
- /* This case was supposed to be handled in machine_ip. */
- abort ();
-
- buf[0] |= (val >> 26) & 0x03; /* Holds bits 0FFFFFFC of address. */
- buf[1] = val >> 18;
- buf[2] = val >> 10;
- buf[3] = val >> 2;
- break;
-
- case RELOC_CONST: /* 0000XXXX pattern in a word. */
-#if DEBUG
- printf ("reloc_const: val=%x\n", val);
-#endif
- buf[2] = val >> 8; /* Holds bits 0000XXXX. */
- buf[3] = val;
- break;
-
- case RELOC_CONSTH: /* 0000XXXX pattern in a word. */
-#if DEBUG
- printf ("reloc_consth: val=%x\n", val);
-#endif
- buf[2] = val >> 24; /* Holds bits XXXX0000. */
- buf[3] = val >> 16;
- break;
-
- case BFD_RELOC_VTABLE_INHERIT:
- case BFD_RELOC_VTABLE_ENTRY:
- fixP->fx_done = 0;
- break;
-
- case NO_RELOC:
- default:
- as_bad (_("bad relocation type: 0x%02x"), fixP->fx_r_type);
- break;
- }
-
- if (fixP->fx_addsy == (symbolS *) NULL)
- fixP->fx_done = 1;
-}
-#endif
-
-#ifdef OBJ_COFF
-short
-tc_coff_fix2rtype (fixS *fixP)
-{
-#if DEBUG
- printf ("tc_coff_fix2rtype\n");
-#endif
-
- switch (fixP->fx_r_type)
- {
- case RELOC_32: return R_WORD;
- case RELOC_8: return R_BYTE;
- case RELOC_CONST: return R_ILOHALF;
- case RELOC_CONSTH: return R_IHIHALF;
- case RELOC_JUMPTARG: return R_IREL;
- default:
- printf ("need %d\n", fixP->fx_r_type);
- abort ();
- }
-
- return 0;
-}
-
-#endif /* OBJ_COFF */
/* Should never be called for or32. */
/* Should never be called for or32. */
-#ifndef BFD_ASSEMBLER
-void
-md_convert_frag (object_headers * headers ATTRIBUTE_UNUSED,
- segT seg ATTRIBUTE_UNUSED,
- register fragS * fragP ATTRIBUTE_UNUSED)
-{
- as_fatal ("or32_convert_frag\n");
-}
-
-#else
void
md_convert_frag (bfd * headers ATTRIBUTE_UNUSED,
segT seg ATTRIBUTE_UNUSED,
{
as_fatal ("or32_convert_frag\n");
}
-#endif
/* Should never be called for or32. */
symbolS *
md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
{
-#ifndef BFD_ASSEMBLER
- long regnum;
- char testbuf[5 + /*SLOP*/ 5];
-
-#if DEBUG
- printf ("md_undefined_symbol(%s)\n", name);
-#endif
-
- /* Register name. */
- if (name[0] == 'r' || name[0] == 'R' || name[0] == 'a' || name[0] == 'b')
- {
- /* Parse the number, make sure it has no extra zeroes or
- trailing chars. */
- regnum = atol (& name[1]);
-
- if (regnum > 31)
- as_fatal (_("register out of range"));
-
- sprintf (testbuf, "%ld", regnum);
-
- if (strcmp (testbuf, &name[1]) != 0)
- return NULL; /* gr007 or lr7foo or whatever. */
-
- /* We have a wiener! Define and return a new symbol for it. */
- return (symbol_new (name, SEG_REGISTER, (valueT) regnum,
- &zero_address_frag));
- }
-#endif
return NULL;
}
/* Generate a reloc for a fixup. */
-#ifdef BFD_ASSEMBLER
arelent *
tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixp)
{
reloc->addend = fixp->fx_addnumber;
return reloc;
}
-#endif
projects / deliverable / binutils-gdb.git / blobdiff