/* tc-fr30.c -- Assembler for the Fujitsu FR30.
- Copyright (C) 1998 Free Software Foundation.
+ Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2005
+ 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 "symcat.h"
-#include "cgen-opc.h"
+#include "opcodes/fr30-desc.h"
+#include "opcodes/fr30-opc.h"
#include "cgen.h"
-/* Linked list of symbols that are debugging symbols to be
- defined as the beginning of the current instruction. */
-typedef struct sym_link
-{
- struct sym_link * next;
- symbolS * symbol;
-} sym_linkS;
-
-static sym_linkS * debug_sym_link = (sym_linkS *) NULL;
-
/* Structure to hold all of the different components describing
an individual instruction. */
typedef struct
int num_fixups;
fixS * fixups [GAS_CGEN_MAX_FIXUPS];
int indices [MAX_OPERAND_INSTANCES];
- sym_linkS * debug_sym_link;
}
fr30_insn;
const char comment_chars[] = ";";
const char line_comment_chars[] = "#";
-const char line_separator_chars[] = "";
+const char line_separator_chars[] = "|";
const char EXP_CHARS[] = "eE";
const char FLT_CHARS[] = "dD";
\f
size_t md_longopts_size = sizeof (md_longopts);
int
-md_parse_option (c, arg)
- int c;
- char * arg;
+md_parse_option (int c ATTRIBUTE_UNUSED,
+ char *arg ATTRIBUTE_UNUSED)
{
switch (c)
{
}
void
-md_show_usage (stream)
- FILE * stream;
+md_show_usage (FILE * stream)
{
fprintf (stream, _(" FR30 specific command line options:\n"));
-}
+}
/* The target specific pseudo-ops which we support. */
const pseudo_typeS md_pseudo_table[] =
\f
void
-md_begin ()
+md_begin (void)
{
- flagword applicable;
- segT seg;
- subsegT subseg;
-
/* Initialize the `cgen' interface. */
-
+
/* Set the machine number and endian. */
- gas_cgen_opcode_desc = fr30_cgen_opcode_open (bfd_mach_fr30, CGEN_ENDIAN_BIG);
- fr30_cgen_init_asm (gas_cgen_opcode_desc);
+ gas_cgen_cpu_desc = fr30_cgen_cpu_open (CGEN_CPU_OPEN_MACHS, 0,
+ CGEN_CPU_OPEN_ENDIAN,
+ CGEN_ENDIAN_BIG,
+ CGEN_CPU_OPEN_END);
+ fr30_cgen_init_asm (gas_cgen_cpu_desc);
/* This is a callback from cgen to gas to parse operands. */
- cgen_set_parse_operand_fn (gas_cgen_opcode_desc, gas_cgen_parse_operand);
+ cgen_set_parse_operand_fn (gas_cgen_cpu_desc, gas_cgen_parse_operand);
}
void
-md_assemble (str)
- char * str;
+md_assemble (char *str)
{
+ static int last_insn_had_delay_slot = 0;
fr30_insn insn;
- char * errmsg;
- char * str2 = NULL;
+ char *errmsg;
/* Initialize GAS's cgen interface for a new instruction. */
gas_cgen_init_parse ();
- insn.debug_sym_link = debug_sym_link;
- debug_sym_link = (sym_linkS *)0;
-
insn.insn = fr30_cgen_assemble_insn
- (gas_cgen_opcode_desc, str, & insn.fields, insn.buffer, & errmsg);
-
+ (gas_cgen_cpu_desc, str, & insn.fields, insn.buffer, & errmsg);
+
if (!insn.insn)
{
as_bad (errmsg);
/* Doesn't really matter what we pass for RELAX_P here. */
gas_cgen_finish_insn (insn.insn, insn.buffer,
CGEN_FIELDS_BITSIZE (& insn.fields), 1, NULL);
+
+ /* Warn about invalid insns in delay slots. */
+ if (last_insn_had_delay_slot
+ && CGEN_INSN_ATTR_VALUE (insn.insn, CGEN_INSN_NOT_IN_DELAY_SLOT))
+ as_warn (_("Instruction %s not allowed in a delay slot."),
+ CGEN_INSN_NAME (insn.insn));
+
+ last_insn_had_delay_slot
+ = CGEN_INSN_ATTR_VALUE (insn.insn, CGEN_INSN_DELAY_SLOT);
}
/* The syntax in the manual says constants begin with '#'.
We just ignore it. */
-void
-md_operand (expressionP)
- expressionS * expressionP;
+void
+md_operand (expressionS * expressionP)
{
if (* input_line_pointer == '#')
{
}
valueT
-md_section_align (segment, size)
- segT segment;
- valueT size;
+md_section_align (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;
+md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
{
- return 0;
+ return NULL;
}
\f
/* Interface to relax_segment. */
{0x2000000 - 1 - 2, -0x2000000 - 2, 4, 0 }
};
-long
-fr30_relax_frag (fragP, stretch)
- fragS * fragP;
- long stretch;
-{
- /* Address of branch insn. */
- long address = fragP->fr_address + fragP->fr_fix - 2;
- long growth = 0;
-
- /* Keep 32 bit insns aligned on 32 bit boundaries. */
- if (fragP->fr_subtype == 2)
- {
- if ((address & 3) != 0)
- {
- fragP->fr_subtype = 3;
- growth = 2;
- }
- }
- else if (fragP->fr_subtype == 3)
- {
- if ((address & 3) == 0)
- {
- fragP->fr_subtype = 2;
- growth = -2;
- }
- }
- else
- {
- growth = relax_frag (fragP, stretch);
-
- /* Long jump on odd halfword boundary? */
- if (fragP->fr_subtype == 2 && (address & 3) != 0)
- {
- fragP->fr_subtype = 3;
- growth += 2;
- }
- }
-
- return growth;
-}
-
/* Return an initial guess of the length by which a fragment must grow to
hold a branch to reach its destination.
Also updates fr_type/fr_subtype as necessary.
0 value. */
int
-md_estimate_size_before_relax (fragP, segment)
- fragS * fragP;
- segT segment;
+md_estimate_size_before_relax (fragS * fragP, segT segment)
{
- int old_fr_fix = fragP->fr_fix;
-
/* The only thing we have to handle here are symbols outside of the
current segment. They may be undefined or in a different segment in
which case linker scripts may place them anywhere.
all further handling to md_convert_frag. */
fragP->fr_subtype = 2;
-#if 0 /* Can't use this, but leave in for illustration. */
- /* Change 16 bit insn to 32 bit insn. */
- fragP->fr_opcode[0] |= 0x80;
-
- /* Increase known (fixed) size of fragment. */
- fragP->fr_fix += 2;
-
- /* Create a relocation for it. */
- fix_new (fragP, old_fr_fix, 4,
- fragP->fr_symbol,
- fragP->fr_offset, 1 /* pcrel */,
- /* FIXME: Can't use a real BFD reloc here.
- gas_cgen_md_apply_fix3 can't handle it. */
- BFD_RELOC_FR30_26_PCREL);
-
- /* Mark this fragment as finished. */
- frag_wane (fragP);
-#else
{
const CGEN_INSN * insn;
int i;
if ((strcmp (CGEN_INSN_MNEMONIC (insn),
CGEN_INSN_MNEMONIC (fragP->fr_cgen.insn))
== 0)
- && CGEN_INSN_ATTR (insn, CGEN_INSN_RELAX))
+ && CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED))
break;
}
if (i == 4)
fragP->fr_cgen.insn = insn;
return 2;
}
-#endif
}
- return (fragP->fr_var + fragP->fr_fix - old_fr_fix);
-}
+ /* Return the size of the variable part of the frag. */
+ return md_relax_table[fragP->fr_subtype].rlx_length;
+}
/* *fragP has been relaxed to its final size, and now needs to have
the bytes inside it modified to conform to the new size.
fragP->fr_subtype is the subtype of what the address relaxed to. */
void
-md_convert_frag (abfd, sec, fragP)
- bfd * abfd;
- segT sec;
- fragS * fragP;
+md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
+ segT sec ATTRIBUTE_UNUSED,
+ fragS *fragP ATTRIBUTE_UNUSED)
{
-#if 0
- char * opcode;
- char * displacement;
- int target_address;
- int opcode_address;
- int extension;
- int addend;
-
- opcode = fragP->fr_opcode;
-
- /* Address opcode resides at in file space. */
- opcode_address = fragP->fr_address + fragP->fr_fix - 2;
-
- switch (fragP->fr_subtype)
- {
- case 1 :
- extension = 0;
- displacement = & opcode[1];
- break;
- case 2 :
- opcode[0] |= 0x80;
- extension = 2;
- displacement = & opcode[1];
- break;
- case 3 :
- opcode[2] = opcode[0] | 0x80;
- md_number_to_chars (opcode, PAR_NOP_INSN, 2);
- opcode_address += 2;
- extension = 4;
- displacement = & opcode[3];
- break;
- default :
- abort ();
- }
-
- if (S_GET_SEGMENT (fragP->fr_symbol) != sec)
- {
- /* symbol must be resolved by linker */
- if (fragP->fr_offset & 3)
- as_warn (_("Addend to unresolved symbol not on word boundary."));
- addend = fragP->fr_offset >> 2;
- }
- else
- {
- /* Address we want to reach in file space. */
- target_address = S_GET_VALUE (fragP->fr_symbol) + fragP->fr_offset;
- target_address += fragP->fr_symbol->sy_frag->fr_address;
- addend = (target_address - (opcode_address & -4)) >> 2;
- }
-
- /* Create a relocation for symbols that must be resolved by the linker.
- Otherwise output the completed insn. */
-
- if (S_GET_SEGMENT (fragP->fr_symbol) != sec)
- {
- assert (fragP->fr_subtype != 1);
- assert (fragP->fr_cgen.insn != 0);
- gas_cgen_record_fixup (fragP,
- /* Offset of branch insn in frag. */
- fragP->fr_fix + extension - 4,
- fragP->fr_cgen.insn,
- 4 /*length*/,
- /* FIXME: quick hack */
-#if 0
- CGEN_OPERAND_ENTRY (fragP->fr_cgen.opindex),
-#else
- CGEN_OPERAND_ENTRY (FR30_OPERAND_DISP24),
-#endif
- fragP->fr_cgen.opinfo,
- fragP->fr_symbol, fragP->fr_offset);
- }
-
-#define SIZE_FROM_RELAX_STATE(n) ((n) == 1 ? 1 : 3)
-
- md_number_to_chars (displacement, (valueT) addend,
- SIZE_FROM_RELAX_STATE (fragP->fr_subtype));
-
- fragP->fr_fix += extension;
-#endif
}
\f
/* Functions concerning relocs. */
given a PC relative reloc. */
long
-md_pcrel_from_section (fixP, sec)
- fixS * fixP;
- segT sec;
+md_pcrel_from_section (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;
- }
+ /* The symbol is undefined (or is defined but not in this section).
+ Let the linker figure it out. */
+ return 0;
- return (fixP->fx_frag->fr_address + fixP->fx_where) & -4L;
+ return (fixP->fx_frag->fr_address + fixP->fx_where) & ~1;
}
/* Return the bfd reloc type for OPERAND of INSN at fixup FIXP.
*FIXP may be modified if desired. */
bfd_reloc_code_real_type
-md_cgen_lookup_reloc (insn, operand, fixP)
- const CGEN_INSN * insn;
- const CGEN_OPERAND * operand;
- fixS * fixP;
+md_cgen_lookup_reloc (const CGEN_INSN *insn ATTRIBUTE_UNUSED,
+ const CGEN_OPERAND *operand,
+ fixS *fixP)
{
- switch (CGEN_OPERAND_TYPE (operand))
+ switch (operand->type)
{
- case FR30_OPERAND_PC : return BFD_RELOC_FR30_12_PCREL;
- case FR30_OPERAND_RI :
- case FR30_OPERAND_RJ :
- case FR30_OPERAND_NBIT :
- case FR30_OPERAND_VBIT :
- case FR30_OPERAND_ZBIT :
- case FR30_OPERAND_CBIT :
- default : /* avoid -Wall warning */
+ case FR30_OPERAND_LABEL9: fixP->fx_pcrel = 1; return BFD_RELOC_FR30_9_PCREL;
+ case FR30_OPERAND_LABEL12: fixP->fx_pcrel = 1; return BFD_RELOC_FR30_12_PCREL;
+ case FR30_OPERAND_DISP10: return BFD_RELOC_FR30_10_IN_8;
+ case FR30_OPERAND_DISP9: return BFD_RELOC_FR30_9_IN_8;
+ case FR30_OPERAND_DISP8: return BFD_RELOC_FR30_8_IN_8;
+ case FR30_OPERAND_UDISP6: return BFD_RELOC_FR30_6_IN_4;
+ case FR30_OPERAND_I8: return BFD_RELOC_8;
+ case FR30_OPERAND_I32: return BFD_RELOC_FR30_48;
+ case FR30_OPERAND_I20: return BFD_RELOC_FR30_20;
+ default : /* Avoid -Wall warning. */
break;
}
return BFD_RELOC_NONE;
}
-
-
-/* Return BFD reloc type from opinfo field in a fixS.
- It's tricky using fx_r_type in fr30_frob_file because the values
- are BFD_RELOC_UNUSED + operand number. */
-#define FX_OPINFO_R_TYPE(f) ((f)->tc_fix_data.opinfo)
-
-/* See whether we need to force a relocation into the output file.
- This is used to force out switch and PC relative relocations when
- relaxing. */
-
-int
-fr30_force_relocation (fix)
- fixS * fix;
-{
- if (fix->fx_r_type == BFD_RELOC_VTABLE_INHERIT
- || fix->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
- return 1;
-
- return fix->fx_pcrel;
-}
\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;
+md_number_to_chars (char * buf, valueT val, int n)
{
number_to_chars_bigendian (buf, val, n);
}
emitted is stored in *sizeP . An error message is returned, or NULL on OK.
*/
-/* Equal to MAX_PRECISION in atof-ieee.c */
+/* Equal to MAX_PRECISION in atof-ieee.c. */
#define MAX_LITTLENUMS 6
char *
-md_atof (type, litP, sizeP)
- char type;
- char * litP;
- int * sizeP;
+md_atof (int type, char * litP, int * sizeP)
{
int i;
int prec;
LITTLENUM_TYPE words [MAX_LITTLENUMS];
char * t;
- char * atof_ieee ();
switch (type)
{
sizeof (LITTLENUM_TYPE));
litP += sizeof (LITTLENUM_TYPE);
}
-
+
return 0;
}
+/* Worker function for fr30_is_colon_insn(). */
static char
-restore_colon (advance_i_l_p_by)
- int advance_i_l_p_by;
+restore_colon (int advance_i_l_p_by)
{
char c;
-
+
/* Restore the colon, and advance input_line_pointer to
the end of the new symbol. */
* input_line_pointer = ':';
input_line_pointer += advance_i_l_p_by;
c = * input_line_pointer;
* input_line_pointer = 0;
-
+
return c;
}
a colon that was at the location pointed to by INPUT_LINE_POINTER
(but which has now been replaced bu a NUL) is in fact an
LDI:8, LDI:20, LDI:32, CALL:D. JMP:D, RET:D or Bcc:D instruction.
- If it is, then it restores the colon, adbvances INPUT_LINE_POINTER
+ If it is, then it restores the colon, advances INPUT_LINE_POINTER
to the real end of the instruction/symbol, and returns the character
that really terminated the symbol. Otherwise it returns 0. */
char
-fr30_is_colon_insn (start)
- char * start;
+fr30_is_colon_insn (char * start)
{
char * i_l_p = input_line_pointer;
- /* Check to see if the symbol parsed so far is 'ldi' */
+ /* Check to see if the symbol parsed so far is 'ldi'. */
if ( (start[0] != 'l' && start[0] != 'L')
|| (start[1] != 'd' && start[1] != 'D')
|| (start[2] != 'i' && start[2] != 'I')
static char * delay_insns [] =
{
"call", "jmp", "ret", "bra", "bno",
- "beq", "bne", "bc", "bnc", "bn", "bp",
- "bv", "bnv", "blt", "bge", "ble", "bgt",
- "bls", "bhi"
+ "beq", "bne", "bc", "bnc", "bn",
+ "bp", "bv", "bnv", "blt", "bge",
+ "ble", "bgt", "bls", "bhi"
};
for (i = sizeof (delay_insns) / sizeof (delay_insns[0]); i--;)
if (start [len] != 0)
continue;
-
+
while (len --)
- {
- if (tolower (start [len]) != insn [len])
- break;
- }
-
+ if (TOLOWER (start [len]) != insn [len])
+ break;
+
if (len == -1)
return restore_colon (1);
}
return 0;
}
- /* Check to see if the text following the colon is '8' */
+ /* Check to see if the text following the colon is '8'. */
if (i_l_p[1] == '8' && (i_l_p[2] == ' ' || i_l_p[2] == '\t'))
- {
- return restore_colon (2);
- }
+ return restore_colon (2);
- /* Check to see if the text following the colon is '20' */
+ /* Check to see if the text following the colon is '20'. */
else if (i_l_p[1] == '2' && i_l_p[2] =='0' && (i_l_p[3] == ' ' || i_l_p[3] == '\t'))
- {
- return restore_colon (3);
- }
+ return restore_colon (3);
- /* Check to see if the text following the colon is '32' */
+ /* Check to see if the text following the colon is '32'. */
else if (i_l_p[1] == '3' && i_l_p[2] =='2' && (i_l_p[3] == ' ' || i_l_p[3] == '\t'))
- {
- return restore_colon (3);
- }
+ return restore_colon (3);
return 0;
}
+
+bfd_boolean
+fr30_fix_adjustable (fixS * fixP)
+{
+ /* We need the symbol name for the VTABLE entries. */
+ if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
+ || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
+ return 0;
+
+ return 1;
+}
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