THIS FILE IS MACHINE GENERATED WITH CGEN.
- the resultant file is machine generated, cgen-dis.in isn't
-Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
+Free Software Foundation, Inc.
This file is part of the GNU Binutils and GDB, the GNU debugger.
#include "dis-asm.h"
#include "bfd.h"
#include "symcat.h"
+#include "libiberty.h"
#include "@prefix@-desc.h"
#include "@prefix@-opc.h"
#include "opintl.h"
static void print_insn_normal
PARAMS ((CGEN_CPU_DESC, PTR, const CGEN_INSN *, CGEN_FIELDS *,
bfd_vma, int));
-static int print_insn PARAMS ((CGEN_CPU_DESC, bfd_vma,
- disassemble_info *, char *, int));
+static int print_insn
+ PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, unsigned));
static int default_print_insn
PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *));
+static int read_insn
+ PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, int,
+ CGEN_EXTRACT_INFO *, unsigned long *));
\f
/* -- disassembler routines inserted here */
\f
static void
print_normal (cd, dis_info, value, attrs, pc, length)
-#ifdef CGEN_PRINT_NORMAL
- CGEN_CPU_DESC cd;
-#else
CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
-#endif
PTR dis_info;
long value;
unsigned int attrs;
-#ifdef CGEN_PRINT_NORMAL
- bfd_vma pc;
- int length;
-#else
bfd_vma pc ATTRIBUTE_UNUSED;
int length ATTRIBUTE_UNUSED;
-#endif
{
disassemble_info *info = (disassemble_info *) dis_info;
static void
print_address (cd, dis_info, value, attrs, pc, length)
-#ifdef CGEN_PRINT_NORMAL
- CGEN_CPU_DESC cd;
-#else
CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
-#endif
PTR dis_info;
bfd_vma value;
unsigned int attrs;
-#ifdef CGEN_PRINT_NORMAL
- bfd_vma pc;
- int length;
-#else
bfd_vma pc ATTRIBUTE_UNUSED;
int length ATTRIBUTE_UNUSED;
-#endif
{
disassemble_info *info = (disassemble_info *) dis_info;
/* Subroutine of print_insn. Reads an insn into the given buffers and updates
the extract info.
Returns 0 if all is well, non-zero otherwise. */
+
static int
read_insn (cd, pc, info, buf, buflen, ex_info, insn_value)
- CGEN_CPU_DESC cd;
+ CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
bfd_vma pc;
disassemble_info *info;
char *buf;
bfd_vma pc;
disassemble_info *info;
char *buf;
- int buflen;
+ unsigned int buflen;
{
- unsigned long insn_value;
+ CGEN_INSN_INT insn_value;
const CGEN_INSN_LIST *insn_list;
CGEN_EXTRACT_INFO ex_info;
+ int basesize;
- int rc = read_insn (cd, pc, info, buf, buflen, & ex_info, & insn_value);
- if (rc != 0)
- return rc;
+ /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
+ basesize = cd->base_insn_bitsize < buflen * 8 ?
+ cd->base_insn_bitsize : buflen * 8;
+ insn_value = cgen_get_insn_value (cd, buf, basesize);
+
+
+ /* Fill in ex_info fields like read_insn would. Don't actually call
+ read_insn, since the incoming buffer is already read (and possibly
+ modified a la m32r). */
+ ex_info.valid = (1 << buflen) - 1;
+ ex_info.dis_info = info;
+ ex_info.insn_bytes = buf;
/* The instructions are stored in hash lists.
Pick the first one and keep trying until we find the right one. */
const CGEN_INSN *insn = insn_list->insn;
CGEN_FIELDS fields;
int length;
+ unsigned long insn_value_cropped;
#ifdef CGEN_VALIDATE_INSN_SUPPORTED
- /* not needed as insn shouldn't be in hash lists if not supported */
+ /* Not needed as insn shouldn't be in hash lists if not supported. */
/* Supported by this cpu? */
if (! @arch@_cgen_insn_supported (cd, insn))
{
/* Basic bit mask must be correct. */
/* ??? May wish to allow target to defer this check until the extract
handler. */
- if ((insn_value & CGEN_INSN_BASE_MASK (insn))
+
+ /* Base size may exceed this instruction's size. Extract the
+ relevant part from the buffer. */
+ if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
+ (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
+ insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
+ info->endian == BFD_ENDIAN_BIG);
+ else
+ insn_value_cropped = insn_value;
+
+ if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
== CGEN_INSN_BASE_VALUE (insn))
{
/* Printing is handled in two passes. The first pass parses the
/* Make sure the entire insn is loaded into insn_value, if it
can fit. */
- if (CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize &&
- (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
+ if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
+ (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
{
unsigned long full_insn_value;
int rc = read_insn (cd, pc, info, buf,
}
else
length = CGEN_EXTRACT_FN (cd, insn)
- (cd, insn, &ex_info, insn_value, &fields, pc);
+ (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
/* length < 0 -> error */
if (length < 0)
disassemble_info *info;
{
char buf[CGEN_MAX_INSN_SIZE];
+ int buflen;
int status;
- /* Read the base part of the insn. */
+ /* Attempt to read the base part of the insn. */
+ buflen = cd->base_insn_bitsize / 8;
+ status = (*info->read_memory_func) (pc, buf, buflen, info);
+
+ /* Try again with the minimum part, if min < base. */
+ if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
+ {
+ buflen = cd->min_insn_bitsize / 8;
+ status = (*info->read_memory_func) (pc, buf, buflen, info);
+ }
- status = (*info->read_memory_func) (pc, buf, cd->base_insn_bitsize / 8, info);
if (status != 0)
{
(*info->memory_error_func) (status, pc, info);
return -1;
}
- return print_insn (cd, pc, info, buf, cd->base_insn_bitsize / 8);
+ return print_insn (cd, pc, info, buf, buflen);
}
/* Main entry point.
Print one instruction from PC on INFO->STREAM.
Return the size of the instruction (in bytes). */
+typedef struct cpu_desc_list {
+ struct cpu_desc_list *next;
+ int isa;
+ int mach;
+ int endian;
+ CGEN_CPU_DESC cd;
+} cpu_desc_list;
+
int
print_insn_@arch@ (pc, info)
bfd_vma pc;
disassemble_info *info;
{
+ static cpu_desc_list *cd_list = 0;
+ cpu_desc_list *cl = 0;
static CGEN_CPU_DESC cd = 0;
static int prev_isa;
static int prev_mach;
arch = info->arch;
if (arch == bfd_arch_unknown)
arch = CGEN_BFD_ARCH;
-
- /* There's no standard way to compute the isa number (e.g. for arm thumb)
+
+ /* There's no standard way to compute the machine or isa number
so we leave it to the target. */
+#ifdef CGEN_COMPUTE_MACH
+ mach = CGEN_COMPUTE_MACH (info);
+#else
+ mach = info->mach;
+#endif
+
#ifdef CGEN_COMPUTE_ISA
isa = CGEN_COMPUTE_ISA (info);
#else
- isa = 0;
+ isa = info->insn_sets;
#endif
- mach = info->mach;
-
- /* If we've switched cpu's, close the current table and open a new one. */
+ /* If we've switched cpu's, try to find a handle we've used before */
if (cd
&& (isa != prev_isa
|| mach != prev_mach
|| endian != prev_endian))
{
- @arch@_cgen_cpu_close (cd);
cd = 0;
- }
+ for (cl = cd_list; cl; cl = cl->next)
+ {
+ if (cl->isa == isa &&
+ cl->mach == mach &&
+ cl->endian == endian)
+ {
+ cd = cl->cd;
+ break;
+ }
+ }
+ }
/* If we haven't initialized yet, initialize the opcode table. */
if (! cd)
CGEN_CPU_OPEN_END);
if (!cd)
abort ();
+
+ /* save this away for future reference */
+ cl = xmalloc (sizeof (struct cpu_desc_list));
+ cl->cd = cd;
+ cl->isa = isa;
+ cl->mach = mach;
+ cl->endian = endian;
+ cl->next = cd_list;
+ cd_list = cl;
+
@arch@_cgen_init_dis (cd);
}
projects / deliverable / binutils-gdb.git / blobdiff