/* tc-fr30.c -- Assembler for the Fujitsu FR30.
- Copyright (C) 1998 Free Software Foundation.
+ Copyright (C) 1998, 1999 Free Software Foundation.
This file is part of GAS, the GNU Assembler.
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-
-/*!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- This file is work in progress and was copied from m32r/tc-m32r.c in
- order to all gas/configure to run with the target fr30-unknown-elf.
- Other than changing all occurances for m32r to fr30, this file has not
- been customized for fr30 in any way.
- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*/
-
#include <stdio.h>
#include <ctype.h>
#include "as.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 *)0;
-
/* 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;
-/* prev_insn.insn is non-null if last insn was a 16 bit insn on a 32 bit
- boundary (i.e. was the first of two 16 bit insns). */
-static fr30_insn prev_insn;
-
-/* Non-zero if we've seen a relaxable insn since the last 32 bit
- alignment request. */
-static int seen_relaxable_p = 0;
-
-/* Non-zero if -relax specified, in which case sufficient relocs are output
- for the linker to do relaxing.
- We do simple forms of relaxing internally, but they are always done.
- This flag does not apply to them. */
-static int fr30_relax;
-
-#if 0 /* not supported yet */
-/* If non-NULL, pointer to cpu description file to read.
- This allows runtime additions to the assembler. */
-static const char * fr30_cpu_desc;
-#endif
-
-/* Non-zero if warn when a high/shigh reloc has no matching low reloc.
- Each high/shigh reloc must be paired with it's low cousin in order to
- properly calculate the addend in a relocatable link (since there is a
- potential carry from the low to the high/shigh).
- This option is off by default though for user-written assembler code it
- might make sense to make the default be on (i.e. have gcc pass a flag
- to turn it off). This warning must not be on for GCC created code as
- optimization may delete the low but not the high/shigh (at least we
- shouldn't assume or require it to). */
-static int warn_unmatched_high = 0;
-
-/* stuff for .scomm symbols. */
-static segT sbss_section;
-static asection scom_section;
-static asymbol scom_symbol;
-
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";
-
-/* Relocations against symbols are done in two
- parts, with a HI relocation and a LO relocation. Each relocation
- has only 16 bits of space to store an addend. This means that in
- order for the linker to handle carries correctly, it must be able
- to locate both the HI and the LO relocation. This means that the
- relocations must appear in order in the relocation table.
-
- In order to implement this, we keep track of each unmatched HI
- relocation. We then sort them so that they immediately precede the
- corresponding LO relocation. */
-
-struct fr30_hi_fixup
-{
- struct fr30_hi_fixup * next; /* Next HI fixup. */
- fixS * fixp; /* This fixup. */
- segT seg; /* The section this fixup is in. */
-
-};
-
-/* The list of unmatched HI relocs. */
-
-static struct fr30_hi_fixup * fr30_hi_fixup_list;
-
\f
#define FR30_SHORTOPTS ""
const char * md_shortopts = FR30_SHORTOPTS;
struct option md_longopts[] =
{
- /* Sigh. I guess all warnings must now have both variants. */
-#define OPTION_WARN_UNMATCHED (OPTION_MD_BASE + 4)
- {"warn-unmatched-high", OPTION_WARN_UNMATCHED},
- {"Wuh", OPTION_WARN_UNMATCHED},
-#define OPTION_NO_WARN_UNMATCHED (OPTION_MD_BASE + 5)
- {"no-warn-unmatched-high", OPTION_WARN_UNMATCHED},
- {"Wnuh", OPTION_WARN_UNMATCHED},
-
-#if 0 /* not supported yet */
-#define OPTION_RELAX (OPTION_MD_BASE + 6)
- {"relax", no_argument, NULL, OPTION_RELAX},
-#define OPTION_CPU_DESC (OPTION_MD_BASE + 7)
- {"cpu-desc", required_argument, NULL, OPTION_CPU_DESC},
-#endif
-
{NULL, no_argument, NULL, 0}
};
size_t md_longopts_size = sizeof (md_longopts);
{
switch (c)
{
- case OPTION_WARN_UNMATCHED:
- warn_unmatched_high = 1;
- break;
-
- case OPTION_NO_WARN_UNMATCHED:
- warn_unmatched_high = 0;
- break;
-
-#if 0 /* not supported yet */
- case OPTION_RELAX:
- fr30_relax = 1;
- break;
- case OPTION_CPU_DESC:
- fr30_cpu_desc = arg;
- break;
-#endif
-
default:
return 0;
}
FILE * stream;
{
fprintf (stream, _(" FR30 specific command line options:\n"));
-
- fprintf (stream, _("\
- -warn-unmatched-high warn when an (s)high reloc has no matching low reloc\n"));
- fprintf (stream, _("\
- -no-warn-unmatched-high do not warn about missing low relocs\n"));
- fprintf (stream, _("\
- -Wuh synonym for -warn-unmatched-high\n"));
- fprintf (stream, _("\
- -Wnuh synonym for -no-warn-unmatched-high\n"));
-
-#if 0
- fprintf (stream, _("\
- -relax create linker relaxable code\n"));
- fprintf (stream, _("\
- -cpu-desc provide runtime cpu description file\n"));
-#endif
}
-static void fill_insn PARAMS ((int));
-static void fr30_scomm PARAMS ((int));
-static void debug_sym PARAMS ((int));
-static void expand_debug_syms PARAMS ((sym_linkS *, int));
-
-/* Set by md_assemble for use by fr30_fill_insn. */
-static subsegT prev_subseg;
-static segT prev_seg;
-
/* The target specific pseudo-ops which we support. */
const pseudo_typeS md_pseudo_table[] =
{
{ "word", cons, 4 },
- { "fillinsn", fill_insn, 0 },
- { "scomm", fr30_scomm, 0 },
- { "debugsym", debug_sym, 0 },
- { NULL, NULL, 0 }
+ { NULL, NULL, 0 }
};
-/* FIXME: Should be machine generated. */
-#define NOP_INSN 0x7000
-#define PAR_NOP_INSN 0xf000 /* can only be used in 2nd slot */
-
-/* When we align the .text section, insert the correct NOP pattern.
- N is the power of 2 alignment. LEN is the length of pattern FILL.
- MAX is the maximum number of characters to skip when doing the alignment,
- or 0 if there is no maximum. */
-
-int
-fr30_do_align (n, fill, len, max)
- int n;
- const char * fill;
- int len;
- int max;
-{
- /* Only do this if the fill pattern wasn't specified. */
- if (fill == NULL
- && (now_seg->flags & SEC_CODE) != 0
- /* Only do this special handling if aligning to at least a
- 4 byte boundary. */
- && n > 1
- /* Only do this special handling if we're allowed to emit at
- least two bytes. */
- && (max == 0 || max > 1))
- {
- static const unsigned char nop_pattern[] = { 0xf0, 0x00 };
-
-#if 0
- /* First align to a 2 byte boundary, in case there is an odd .byte. */
- /* FIXME: How much memory will cause gas to use when assembling a big
- program? Perhaps we can avoid the frag_align call? */
- frag_align (1, 0, 0);
-#endif
- /* Next align to a 4 byte boundary (we know n >= 2) using a parallel
- nop. */
- frag_align_pattern (2, nop_pattern, sizeof nop_pattern, 0);
- /* If doing larger alignments use a repeating sequence of appropriate
- nops. */
- if (n > 2)
- {
- static const unsigned char multi_nop_pattern[] =
- { 0x70, 0x00, 0xf0, 0x00 };
- frag_align_pattern (n, multi_nop_pattern, sizeof multi_nop_pattern,
- max ? max - 2 : 0);
- }
-
- prev_insn.insn = NULL;
- return 1;
- }
-
- return 0;
-}
-
-/* If the last instruction was the first of 2 16 bit insns,
- output a nop to move the PC to a 32 bit boundary.
-
- This is done via an alignment specification since branch relaxing
- may make it unnecessary.
-
- Internally, we need to output one of these each time a 32 bit insn is
- seen after an insn that is relaxable. */
-
-static void
-fill_insn (ignore)
- int ignore;
-{
- (void) fr30_do_align (2, NULL, 0, 0);
- prev_insn.insn = NULL;
- seen_relaxable_p = 0;
-}
-
-/* Record the symbol so that when we output the insn, we can create
- a symbol that is at the start of the instruction. This is used
- to emit the label for the start of a breakpoint without causing
- the assembler to emit a NOP if the previous instruction was a
- 16 bit instruction. */
-
-static void
-debug_sym (ignore)
- int ignore;
-{
- register char *name;
- register char delim;
- register char *end_name;
- register symbolS *symbolP;
- register sym_linkS *link;
-
- name = input_line_pointer;
- delim = get_symbol_end ();
- end_name = input_line_pointer;
-
- if ((symbolP = symbol_find (name)) == NULL
- && (symbolP = md_undefined_symbol (name)) == NULL)
- {
- symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag);
- }
-
- symbol_table_insert (symbolP);
- if (S_IS_DEFINED (symbolP) && S_GET_SEGMENT (symbolP) != reg_section)
- /* xgettext:c-format */
- as_bad (_("symbol `%s' already defined"), S_GET_NAME (symbolP));
-
- else
- {
- link = (sym_linkS *) xmalloc (sizeof (sym_linkS));
- link->symbol = symbolP;
- link->next = debug_sym_link;
- debug_sym_link = link;
- symbolP->local = 1;
- }
-
- *end_name = delim;
- demand_empty_rest_of_line ();
-}
-
-/* Second pass to expanding the debug symbols, go through linked
- list of symbols and reassign the address. */
-
-static void
-expand_debug_syms (syms, align)
- sym_linkS *syms;
- int align;
-{
- char *save_input_line = input_line_pointer;
- sym_linkS *next_syms;
-
- if (!syms)
- return;
-
- (void) fr30_do_align (align, NULL, 0, 0);
- for (; syms != (sym_linkS *)0; syms = next_syms)
- {
- symbolS *symbolP = syms->symbol;
- next_syms = syms->next;
- input_line_pointer = ".\n";
- pseudo_set (symbolP);
- free ((char *)syms);
- }
-
- input_line_pointer = save_input_line;
-}
-
-/* Cover function to fill_insn called after a label and at end of assembly.
- The result is always 1: we're called in a conditional to see if the
- current line is a label. */
-
-int
-fr30_fill_insn (done)
- int done;
-{
- if (prev_seg != NULL)
- {
- segT seg = now_seg;
- subsegT subseg = now_subseg;
-
- subseg_set (prev_seg, prev_subseg);
-
- fill_insn (0);
-
- subseg_set (seg, subseg);
- }
-
- if (done && debug_sym_link)
- {
- expand_debug_syms (debug_sym_link, 1);
- debug_sym_link = (sym_linkS *)0;
- }
-
- return 1;
-}
\f
void
md_begin ()
/* Initialize the `cgen' interface. */
/* Set the machine number and endian. */
- gas_cgen_opcode_desc = fr30_cgen_opcode_open (0 /* mach number */,
- target_big_endian ?
- CGEN_ENDIAN_BIG
- : CGEN_ENDIAN_LITTLE);
- 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);
-
-#if 0 /* not supported yet */
- /* If a runtime cpu description file was provided, parse it. */
- if (fr30_cpu_desc != NULL)
- {
- const char * errmsg;
-
- errmsg = cgen_read_cpu_file (gas_cgen_opcode_desc, fr30_cpu_desc);
- if (errmsg != NULL)
- as_bad ("%s: %s", fr30_cpu_desc, errmsg);
- }
-#endif
-
- /* Save the current subseg so we can restore it [it's the default one and
- we don't want the initial section to be .sbss]. */
- seg = now_seg;
- subseg = now_subseg;
-
- /* The sbss section is for local .scomm symbols. */
- sbss_section = subseg_new (".sbss", 0);
-
- /* This is copied from perform_an_assembly_pass. */
- applicable = bfd_applicable_section_flags (stdoutput);
- bfd_set_section_flags (stdoutput, sbss_section, applicable & SEC_ALLOC);
-
-#if 0 /* What does this do? [see perform_an_assembly_pass] */
- seg_info (bss_section)->bss = 1;
-#endif
-
- subseg_set (seg, subseg);
-
- /* We must construct a fake section similar to bfd_com_section
- but with the name .scommon. */
- scom_section = bfd_com_section;
- scom_section.name = ".scommon";
- scom_section.output_section = & scom_section;
- scom_section.symbol = & scom_symbol;
- scom_section.symbol_ptr_ptr = & scom_section.symbol;
- scom_symbol = * bfd_com_section.symbol;
- scom_symbol.name = ".scommon";
- scom_symbol.section = & scom_section;
+ cgen_set_parse_operand_fn (gas_cgen_cpu_desc, gas_cgen_parse_operand);
}
void
md_assemble (str)
char * str;
{
-#if 0
+ static int last_insn_had_delay_slot = 0;
fr30_insn insn;
char * errmsg;
char * str2 = NULL;
/* 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)
{
return;
}
- if (CGEN_INSN_BITSIZE (insn.insn) == 32)
- {
- /* 32 bit insns must live on 32 bit boundaries. */
- if (prev_insn.insn || seen_relaxable_p)
- {
- /* ??? If calling fill_insn too many times turns us into a memory
- pig, can we call a fn to assemble a nop instead of
- !seen_relaxable_p? */
- fill_insn (0);
- }
-
- expand_debug_syms (insn.debug_sym_link, 2);
-
- /* 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);
- }
- else
- {
- int on_32bit_boundary_p;
-
- if (CGEN_INSN_BITSIZE (insn.insn) != 16)
- abort();
-
- insn.orig_insn = insn.insn;
+ /* 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);
- /* Compute whether we're on a 32 bit boundary or not.
- prev_insn.insn is NULL when we're on a 32 bit boundary. */
- on_32bit_boundary_p = prev_insn.insn == 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));
- expand_debug_syms (insn.debug_sym_link, 1);
-
- {
- int i;
- finished_insnS fi;
-
- /* Ensure each pair of 16 bit insns is in the same frag. */
- frag_grow (4);
-
- gas_cgen_finish_insn (insn.orig_insn, insn.buffer,
- CGEN_FIELDS_BITSIZE (& insn.fields),
- 1 /*relax_p*/, &fi);
- insn.addr = fi.addr;
- insn.frag = fi.frag;
- insn.num_fixups = fi.num_fixups;
- for (i = 0; i < fi.num_fixups; ++i)
- insn.fixups[i] = fi.fixups[i];
- }
-
- /* Keep track of whether we've seen a pair of 16 bit insns.
- prev_insn.insn is NULL when we're on a 32 bit boundary. */
- if (on_32bit_boundary_p)
- prev_insn = insn;
- else
- prev_insn.insn = NULL;
-
- /* If the insn needs the following one to be on a 32 bit boundary
- (e.g. subroutine calls), fill this insn's slot. */
- if (on_32bit_boundary_p
- && CGEN_INSN_ATTR (insn.orig_insn, CGEN_INSN_FILL_SLOT) != 0)
- fill_insn (0);
-
- /* If this is a relaxable insn (can be replaced with a larger version)
- mark the fact so that we can emit an alignment directive for a
- following 32 bit insn if we see one. */
- if (CGEN_INSN_ATTR (insn.orig_insn, CGEN_INSN_RELAXABLE) != 0)
- seen_relaxable_p = 1;
- }
-
- /* Set these so fr30_fill_insn can use them. */
- prev_seg = now_seg;
- prev_subseg = now_subseg;
-#endif
+ last_insn_had_delay_slot
+ = CGEN_INSN_ATTR_VALUE (insn.insn, CGEN_INSN_DELAY_SLOT);
}
/* The syntax in the manual says constants begin with '#'.
return 0;
}
\f
-/* .scomm pseudo-op handler.
-
- This is a new pseudo-op to handle putting objects in .scommon.
- By doing this the linker won't need to do any work and more importantly
- it removes the implicit -G arg necessary to correctly link the object file.
-*/
-
-static void
-fr30_scomm (ignore)
- int ignore;
-{
- register char * name;
- register char c;
- register char * p;
- offsetT size;
- register symbolS * symbolP;
- offsetT align;
- int align2;
-
- name = input_line_pointer;
- c = get_symbol_end ();
-
- /* just after name is now '\0' */
- p = input_line_pointer;
- * p = c;
- SKIP_WHITESPACE ();
- if (* input_line_pointer != ',')
- {
- as_bad (_("Expected comma after symbol-name: rest of line ignored."));
- ignore_rest_of_line ();
- return;
- }
-
- input_line_pointer ++; /* skip ',' */
- if ((size = get_absolute_expression ()) < 0)
- {
- /* xgettext:c-format */
- as_warn (_(".SCOMMon length (%ld.) <0! Ignored."), (long) size);
- ignore_rest_of_line ();
- return;
- }
-
- /* The third argument to .scomm is the alignment. */
- if (* input_line_pointer != ',')
- align = 8;
- else
- {
- ++ input_line_pointer;
- align = get_absolute_expression ();
- if (align <= 0)
- {
- as_warn (_("ignoring bad alignment"));
- align = 8;
- }
- }
- /* Convert to a power of 2 alignment. */
- if (align)
- {
- for (align2 = 0; (align & 1) == 0; align >>= 1, ++ align2)
- continue;
- if (align != 1)
- {
- as_bad (_("Common alignment not a power of 2"));
- ignore_rest_of_line ();
- return;
- }
- }
- else
- align2 = 0;
-
- * p = 0;
- symbolP = symbol_find_or_make (name);
- * p = c;
-
- if (S_IS_DEFINED (symbolP))
- {
- /* xgettext:c-format */
- as_bad (_("Ignoring attempt to re-define symbol `%s'."),
- S_GET_NAME (symbolP));
- ignore_rest_of_line ();
- return;
- }
-
- if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size)
- {
- /* xgettext:c-format */
- as_bad (_("Length of .scomm \"%s\" is already %ld. Not changed to %ld."),
- S_GET_NAME (symbolP),
- (long) S_GET_VALUE (symbolP),
- (long) size);
-
- ignore_rest_of_line ();
- return;
- }
-
- if (symbolP->local)
- {
- segT old_sec = now_seg;
- int old_subsec = now_subseg;
- char * pfrag;
-
- record_alignment (sbss_section, align2);
- subseg_set (sbss_section, 0);
-
- if (align2)
- frag_align (align2, 0, 0);
-
- if (S_GET_SEGMENT (symbolP) == sbss_section)
- symbolP->sy_frag->fr_symbol = 0;
-
- symbolP->sy_frag = frag_now;
-
- pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size,
- (char *) 0);
- * pfrag = 0;
- S_SET_SIZE (symbolP, size);
- S_SET_SEGMENT (symbolP, sbss_section);
- S_CLEAR_EXTERNAL (symbolP);
- subseg_set (old_sec, old_subsec);
- }
- else
- {
- S_SET_VALUE (symbolP, (valueT) size);
- S_SET_ALIGN (symbolP, align2);
- S_SET_EXTERNAL (symbolP);
- S_SET_SEGMENT (symbolP, & scom_section);
- }
-
- demand_empty_rest_of_line ();
-}
-\f
/* Interface to relax_segment. */
/* FIXME: Build table by hand, get it working, then machine generate. */
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_RELAX))
break;
}
if (i == 4)
{
/* 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;
+ target_address += symbol_get_frag (fragP->fr_symbol)->fr_address;
addend = (target_address - (opcode_address & -4)) >> 2;
}
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.
const CGEN_OPERAND * operand;
fixS * fixP;
{
-#if 0
- switch (CGEN_OPERAND_TYPE (operand))
- {
- case FR30_OPERAND_DISP8 : return BFD_RELOC_FR30_10_PCREL;
- case FR30_OPERAND_DISP16 : return BFD_RELOC_FR30_18_PCREL;
- case FR30_OPERAND_DISP24 : return BFD_RELOC_FR30_26_PCREL;
- case FR30_OPERAND_UIMM24 : return BFD_RELOC_FR30_24;
- case FR30_OPERAND_HI16 :
- case FR30_OPERAND_SLO16 :
- case FR30_OPERAND_ULO16 :
- /* If low/high/shigh/sda was used, it is recorded in `opinfo'. */
- if (fixP->tc_fix_data.opinfo != 0)
- return fixP->tc_fix_data.opinfo;
- break;
+ switch (operand->type)
+ {
+ 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;
}
-#endif
- return BFD_RELOC_NONE;
-}
-
-/* Record a HI16 reloc for later matching with its LO16 cousin. */
-static void
-fr30_record_hi16 (reloc_type, fixP, seg)
- int reloc_type;
- fixS * fixP;
- segT seg;
-{
- struct fr30_hi_fixup * hi_fixup;
-
- assert (reloc_type == BFD_RELOC_FR30_HI16_SLO
- || reloc_type == BFD_RELOC_FR30_HI16_ULO);
-
- hi_fixup = ((struct fr30_hi_fixup *)
- xmalloc (sizeof (struct fr30_hi_fixup)));
- hi_fixup->fixp = fixP;
- hi_fixup->seg = now_seg;
- hi_fixup->next = fr30_hi_fixup_list;
-
- fr30_hi_fixup_list = hi_fixup;
-}
-
-/* Called while parsing an instruction to create a fixup.
- We need to check for HI16 relocs and queue them up for later sorting. */
-
-fixS *
-fr30_cgen_record_fixup_exp (frag, where, insn, length, operand, opinfo, exp)
- fragS * frag;
- int where;
- const CGEN_INSN * insn;
- int length;
- const CGEN_OPERAND * operand;
- int opinfo;
- expressionS * exp;
-{
-#if 0
- fixS * fixP = gas_cgen_record_fixup_exp (frag, where, insn, length,
- operand, opinfo, exp);
-
- switch (CGEN_OPERAND_TYPE (operand))
- {
- case FR30_OPERAND_HI16 :
- /* If low/high/shigh/sda was used, it is recorded in `opinfo'. */
- if (fixP->tc_fix_data.opinfo == BFD_RELOC_FR30_HI16_SLO
- || fixP->tc_fix_data.opinfo == BFD_RELOC_FR30_HI16_ULO)
- fr30_record_hi16 (fixP->tc_fix_data.opinfo, fixP, now_seg);
- break;
- default : /* avoid -Wall warning */
- break;
- }
-
- return fixP;
-#else
- return 0;
-#endif
-}
-
-/* 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)
-
-/* Sort any unmatched HI16 relocs so that they immediately precede
- the corresponding LO16 reloc. This is called before md_apply_fix and
- tc_gen_reloc. */
-
-void
-fr30_frob_file ()
-{
- struct fr30_hi_fixup * l;
-
- for (l = fr30_hi_fixup_list; l != NULL; l = l->next)
- {
- segment_info_type * seginfo;
- int pass;
-
- assert (FX_OPINFO_R_TYPE (l->fixp) == BFD_RELOC_FR30_HI16_SLO
- || FX_OPINFO_R_TYPE (l->fixp) == BFD_RELOC_FR30_HI16_ULO);
-
- /* Check quickly whether the next fixup happens to be a matching low. */
- if (l->fixp->fx_next != NULL
- && FX_OPINFO_R_TYPE (l->fixp->fx_next) == BFD_RELOC_FR30_LO16
- && l->fixp->fx_addsy == l->fixp->fx_next->fx_addsy
- && l->fixp->fx_offset == l->fixp->fx_next->fx_offset)
- continue;
-
- /* Look through the fixups for this segment for a matching `low'.
- When we find one, move the high/shigh just in front of it. We do
- this in two passes. In the first pass, we try to find a
- unique `low'. In the second pass, we permit multiple high's
- relocs for a single `low'. */
- seginfo = seg_info (l->seg);
- for (pass = 0; pass < 2; pass++)
- {
- fixS * f;
- fixS * prev;
-
- prev = NULL;
- for (f = seginfo->fix_root; f != NULL; f = f->fx_next)
- {
- /* Check whether this is a `low' fixup which matches l->fixp. */
- if (FX_OPINFO_R_TYPE (f) == BFD_RELOC_FR30_LO16
- && f->fx_addsy == l->fixp->fx_addsy
- && f->fx_offset == l->fixp->fx_offset
- && (pass == 1
- || prev == NULL
- || (FX_OPINFO_R_TYPE (prev) != BFD_RELOC_FR30_HI16_SLO
- && FX_OPINFO_R_TYPE (prev) != BFD_RELOC_FR30_HI16_ULO)
- || prev->fx_addsy != f->fx_addsy
- || prev->fx_offset != f->fx_offset))
- {
- fixS ** pf;
-
- /* Move l->fixp before f. */
- for (pf = &seginfo->fix_root;
- * pf != l->fixp;
- pf = & (* pf)->fx_next)
- assert (* pf != NULL);
-
- * pf = l->fixp->fx_next;
-
- l->fixp->fx_next = f;
- if (prev == NULL)
- seginfo->fix_root = l->fixp;
- else
- prev->fx_next = l->fixp;
-
- break;
- }
-
- prev = f;
- }
-
- if (f != NULL)
- break;
-
- if (pass == 1
- && warn_unmatched_high)
- as_warn_where (l->fixp->fx_file, l->fixp->fx_line,
- _("Unmatched high/shigh reloc"));
- }
- }
+ return BFD_RELOC_NONE;
}
/* See whether we need to force a relocation into the output file.
fr30_force_relocation (fix)
fixS * fix;
{
- if (fix->fx_r_type == BFD_RELOC_VTABLE_INHERIT
+ if ( fix->fx_r_type == BFD_RELOC_VTABLE_INHERIT
|| fix->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
return 1;
- if (! fr30_relax)
- return 0;
-
- return (fix->fx_pcrel
- || 0 /* ??? */);
+ return 0;
}
\f
/* Write a value out to the object file, using the appropriate endianness. */
valueT val;
int n;
{
- if (target_big_endian)
- number_to_chars_bigendian (buf, val, n);
- else
- number_to_chars_littleendian (buf, val, n);
+ number_to_chars_bigendian (buf, val, n);
}
/* Turn a string in input_line_pointer into a floating point constant of type
char *
md_atof (type, litP, sizeP)
- char type;
- char *litP;
- int *sizeP;
+ char type;
+ char * litP;
+ int * sizeP;
{
int i;
int prec;
input_line_pointer = t;
* sizeP = prec * sizeof (LITTLENUM_TYPE);
- if (target_big_endian)
- {
- for (i = 0; i < prec; i++)
- {
- md_number_to_chars (litP, (valueT) words[i],
- sizeof (LITTLENUM_TYPE));
- litP += sizeof (LITTLENUM_TYPE);
- }
- }
- else
+ for (i = 0; i < prec; i++)
{
- for (i = prec - 1; i >= 0; i--)
- {
- md_number_to_chars (litP, (valueT) words[i],
- sizeof (LITTLENUM_TYPE));
- litP += sizeof (LITTLENUM_TYPE);
- }
+ md_number_to_chars (litP, (valueT) words[i],
+ sizeof (LITTLENUM_TYPE));
+ litP += sizeof (LITTLENUM_TYPE);
}
return 0;
}
-void
-fr30_elf_section_change_hook ()
+/* Worker function for fr30_is_colon_insn(). */
+static char
+restore_colon (advance_i_l_p_by)
+ int advance_i_l_p_by;
{
- /* If we have reached the end of a section and we have just emitted a
- 16 bit insn, then emit a nop to make sure that the section ends on
- a 32 bit boundary. */
+ 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;
- if (prev_insn.insn || seen_relaxable_p)
- (void) fr30_fill_insn (0);
+ return c;
+}
+
+/* Determines if the symbol starting at START and ending in
+ 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, 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;
+{
+ char * i_l_p = input_line_pointer;
+
+ /* 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')
+ || start[3] != 0)
+ {
+ /* Nope - check to see a 'd' follows the colon. */
+ if ( (i_l_p[1] == 'd' || i_l_p[1] == 'D')
+ && (i_l_p[2] == ' ' || i_l_p[2] == '\t' || i_l_p[2] == '\n'))
+ {
+ /* Yup - it might be delay slot instruction. */
+ int i;
+ static char * delay_insns [] =
+ {
+ "call", "jmp", "ret", "bra", "bno",
+ "beq", "bne", "bc", "bnc", "bn",
+ "bp", "bv", "bnv", "blt", "bge",
+ "ble", "bgt", "bls", "bhi"
+ };
+
+ for (i = sizeof (delay_insns) / sizeof (delay_insns[0]); i--;)
+ {
+ char * insn = delay_insns[i];
+ int len = strlen (insn);
+
+ if (start [len] != 0)
+ continue;
+
+ while (len --)
+ if (tolower (start [len]) != insn [len])
+ break;
+
+ if (len == -1)
+ return restore_colon (1);
+ }
+ }
+
+ /* Nope - it is a normal label. */
+ return 0;
+ }
+
+ /* 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);
+
+ /* 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);
+
+ /* 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 0;
}
boolean
fr30_fix_adjustable (fixP)
- fixS *fixP;
+ fixS * fixP;
{
-
if (fixP->fx_addsy == NULL)
return 1;
+#if 0
/* Prevent all adjustments to global symbols. */
if (S_IS_EXTERN (fixP->fx_addsy))
return 0;
+
if (S_IS_WEAK (fixP->fx_addsy))
return 0;
+#endif
/* We need the symbol name for the VTABLE entries */
- if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
+ if ( fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
|| fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
return 0;
projects / deliverable / binutils-gdb.git / blobdiff