1795 lines
44 KiB
C
1795 lines
44 KiB
C
/* Configurable Xtensa ISA support.
|
||
Copyright (C) 2003-2019 Free Software Foundation, Inc.
|
||
|
||
This file is part of BFD, the Binary File Descriptor library.
|
||
|
||
This program 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 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
||
MA 02110-1301, USA. */
|
||
|
||
#include "sysdep.h"
|
||
#include "bfd.h"
|
||
#include "libbfd.h"
|
||
#include "xtensa-isa.h"
|
||
#include "xtensa-isa-internal.h"
|
||
|
||
xtensa_isa_status xtisa_errno;
|
||
char xtisa_error_msg[1024];
|
||
|
||
|
||
xtensa_isa_status
|
||
xtensa_isa_errno (xtensa_isa isa __attribute__ ((unused)))
|
||
{
|
||
return xtisa_errno;
|
||
}
|
||
|
||
|
||
char *
|
||
xtensa_isa_error_msg (xtensa_isa isa __attribute__ ((unused)))
|
||
{
|
||
return xtisa_error_msg;
|
||
}
|
||
|
||
|
||
#define CHECK_ALLOC(MEM,ERRVAL) \
|
||
do { \
|
||
if ((MEM) == 0) \
|
||
{ \
|
||
xtisa_errno = xtensa_isa_out_of_memory; \
|
||
strcpy (xtisa_error_msg, "out of memory"); \
|
||
return (ERRVAL); \
|
||
} \
|
||
} while (0)
|
||
|
||
#define CHECK_ALLOC_FOR_INIT(MEM,ERRVAL,ERRNO_P,ERROR_MSG_P) \
|
||
do { \
|
||
if ((MEM) == 0) \
|
||
{ \
|
||
xtisa_errno = xtensa_isa_out_of_memory; \
|
||
strcpy (xtisa_error_msg, "out of memory"); \
|
||
if (ERRNO_P) *(ERRNO_P) = xtisa_errno; \
|
||
if (ERROR_MSG_P) *(ERROR_MSG_P) = xtisa_error_msg; \
|
||
return (ERRVAL); \
|
||
} \
|
||
} while (0)
|
||
|
||
|
||
|
||
/* Instruction buffers. */
|
||
|
||
int
|
||
xtensa_insnbuf_size (xtensa_isa isa)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
return intisa->insnbuf_size;
|
||
}
|
||
|
||
|
||
xtensa_insnbuf
|
||
xtensa_insnbuf_alloc (xtensa_isa isa)
|
||
{
|
||
xtensa_insnbuf result = (xtensa_insnbuf)
|
||
malloc (xtensa_insnbuf_size (isa) * sizeof (xtensa_insnbuf_word));
|
||
CHECK_ALLOC (result, 0);
|
||
return result;
|
||
}
|
||
|
||
|
||
void
|
||
xtensa_insnbuf_free (xtensa_isa isa __attribute__ ((unused)),
|
||
xtensa_insnbuf buf)
|
||
{
|
||
free (buf);
|
||
}
|
||
|
||
|
||
/* Given <byte_index>, the index of a byte in a xtensa_insnbuf, our
|
||
internal representation of a xtensa instruction word, return the index of
|
||
its word and the bit index of its low order byte in the xtensa_insnbuf. */
|
||
|
||
static inline int
|
||
byte_to_word_index (int byte_index)
|
||
{
|
||
return byte_index / sizeof (xtensa_insnbuf_word);
|
||
}
|
||
|
||
|
||
static inline int
|
||
byte_to_bit_index (int byte_index)
|
||
{
|
||
return (byte_index & 0x3) * 8;
|
||
}
|
||
|
||
|
||
/* Copy an instruction in the 32-bit words pointed at by "insn" to
|
||
characters pointed at by "cp". This is more complicated than you
|
||
might think because we want 16-bit instructions in bytes 2 & 3 for
|
||
big-endian configurations. This function allows us to specify
|
||
which byte in "insn" to start with and which way to increment,
|
||
allowing trivial implementation for both big- and little-endian
|
||
configurations....and it seems to make pretty good code for
|
||
both. */
|
||
|
||
int
|
||
xtensa_insnbuf_to_chars (xtensa_isa isa,
|
||
const xtensa_insnbuf insn,
|
||
unsigned char *cp,
|
||
int num_chars)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
int insn_size = xtensa_isa_maxlength (isa);
|
||
int fence_post, start, increment, i, byte_count;
|
||
xtensa_format fmt;
|
||
|
||
if (num_chars == 0)
|
||
num_chars = insn_size;
|
||
|
||
if (intisa->is_big_endian)
|
||
{
|
||
start = insn_size - 1;
|
||
increment = -1;
|
||
}
|
||
else
|
||
{
|
||
start = 0;
|
||
increment = 1;
|
||
}
|
||
|
||
/* Find the instruction format. Do nothing if the buffer does not contain
|
||
a valid instruction since we need to know how many bytes to copy. */
|
||
fmt = xtensa_format_decode (isa, insn);
|
||
if (fmt == XTENSA_UNDEFINED)
|
||
return XTENSA_UNDEFINED;
|
||
|
||
byte_count = xtensa_format_length (isa, fmt);
|
||
if (byte_count == XTENSA_UNDEFINED)
|
||
return XTENSA_UNDEFINED;
|
||
|
||
if (byte_count > num_chars)
|
||
{
|
||
xtisa_errno = xtensa_isa_buffer_overflow;
|
||
strcpy (xtisa_error_msg, "output buffer too small for instruction");
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
fence_post = start + (byte_count * increment);
|
||
|
||
for (i = start; i != fence_post; i += increment, ++cp)
|
||
{
|
||
int word_inx = byte_to_word_index (i);
|
||
int bit_inx = byte_to_bit_index (i);
|
||
|
||
*cp = (insn[word_inx] >> bit_inx) & 0xff;
|
||
}
|
||
|
||
return byte_count;
|
||
}
|
||
|
||
|
||
/* Inward conversion from byte stream to xtensa_insnbuf. See
|
||
xtensa_insnbuf_to_chars for a discussion of why this is complicated
|
||
by endianness. */
|
||
|
||
void
|
||
xtensa_insnbuf_from_chars (xtensa_isa isa,
|
||
xtensa_insnbuf insn,
|
||
const unsigned char *cp,
|
||
int num_chars)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
int max_size, insn_size, fence_post, start, increment, i;
|
||
|
||
max_size = xtensa_isa_maxlength (isa);
|
||
|
||
/* Decode the instruction length so we know how many bytes to read. */
|
||
insn_size = (intisa->length_decode_fn) (cp);
|
||
if (insn_size == XTENSA_UNDEFINED)
|
||
{
|
||
/* This should never happen when the byte stream contains a
|
||
valid instruction. Just read the maximum number of bytes.... */
|
||
insn_size = max_size;
|
||
}
|
||
|
||
if (num_chars == 0 || num_chars > insn_size)
|
||
num_chars = insn_size;
|
||
|
||
if (intisa->is_big_endian)
|
||
{
|
||
start = max_size - 1;
|
||
increment = -1;
|
||
}
|
||
else
|
||
{
|
||
start = 0;
|
||
increment = 1;
|
||
}
|
||
|
||
fence_post = start + (num_chars * increment);
|
||
memset (insn, 0, xtensa_insnbuf_size (isa) * sizeof (xtensa_insnbuf_word));
|
||
|
||
for (i = start; i != fence_post; i += increment, ++cp)
|
||
{
|
||
int word_inx = byte_to_word_index (i);
|
||
int bit_inx = byte_to_bit_index (i);
|
||
|
||
insn[word_inx] |= (*cp & 0xff) << bit_inx;
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* ISA information. */
|
||
|
||
extern xtensa_isa_internal xtensa_modules;
|
||
|
||
xtensa_isa
|
||
xtensa_isa_init (xtensa_isa_status *errno_p, char **error_msg_p)
|
||
{
|
||
xtensa_isa_internal *isa = &xtensa_modules;
|
||
int n, is_user;
|
||
|
||
/* Set up the opcode name lookup table. */
|
||
isa->opname_lookup_table =
|
||
bfd_malloc (isa->num_opcodes * sizeof (xtensa_lookup_entry));
|
||
CHECK_ALLOC_FOR_INIT (isa->opname_lookup_table, NULL, errno_p, error_msg_p);
|
||
for (n = 0; n < isa->num_opcodes; n++)
|
||
{
|
||
isa->opname_lookup_table[n].key = isa->opcodes[n].name;
|
||
isa->opname_lookup_table[n].u.opcode = n;
|
||
}
|
||
qsort (isa->opname_lookup_table, isa->num_opcodes,
|
||
sizeof (xtensa_lookup_entry), xtensa_isa_name_compare);
|
||
|
||
/* Set up the state name lookup table. */
|
||
isa->state_lookup_table =
|
||
bfd_malloc (isa->num_states * sizeof (xtensa_lookup_entry));
|
||
CHECK_ALLOC_FOR_INIT (isa->state_lookup_table, NULL, errno_p, error_msg_p);
|
||
for (n = 0; n < isa->num_states; n++)
|
||
{
|
||
isa->state_lookup_table[n].key = isa->states[n].name;
|
||
isa->state_lookup_table[n].u.state = n;
|
||
}
|
||
qsort (isa->state_lookup_table, isa->num_states,
|
||
sizeof (xtensa_lookup_entry), xtensa_isa_name_compare);
|
||
|
||
/* Set up the sysreg name lookup table. */
|
||
isa->sysreg_lookup_table =
|
||
bfd_malloc (isa->num_sysregs * sizeof (xtensa_lookup_entry));
|
||
CHECK_ALLOC_FOR_INIT (isa->sysreg_lookup_table, NULL, errno_p, error_msg_p);
|
||
for (n = 0; n < isa->num_sysregs; n++)
|
||
{
|
||
isa->sysreg_lookup_table[n].key = isa->sysregs[n].name;
|
||
isa->sysreg_lookup_table[n].u.sysreg = n;
|
||
}
|
||
qsort (isa->sysreg_lookup_table, isa->num_sysregs,
|
||
sizeof (xtensa_lookup_entry), xtensa_isa_name_compare);
|
||
|
||
/* Set up the user & system sysreg number tables. */
|
||
for (is_user = 0; is_user < 2; is_user++)
|
||
{
|
||
isa->sysreg_table[is_user] =
|
||
bfd_malloc ((isa->max_sysreg_num[is_user] + 1)
|
||
* sizeof (xtensa_sysreg));
|
||
CHECK_ALLOC_FOR_INIT (isa->sysreg_table[is_user], NULL,
|
||
errno_p, error_msg_p);
|
||
|
||
for (n = 0; n <= isa->max_sysreg_num[is_user]; n++)
|
||
isa->sysreg_table[is_user][n] = XTENSA_UNDEFINED;
|
||
}
|
||
for (n = 0; n < isa->num_sysregs; n++)
|
||
{
|
||
xtensa_sysreg_internal *sreg = &isa->sysregs[n];
|
||
is_user = sreg->is_user;
|
||
|
||
if (sreg->number >= 0)
|
||
isa->sysreg_table[is_user][sreg->number] = n;
|
||
}
|
||
|
||
/* Set up the interface lookup table. */
|
||
isa->interface_lookup_table =
|
||
bfd_malloc (isa->num_interfaces * sizeof (xtensa_lookup_entry));
|
||
CHECK_ALLOC_FOR_INIT (isa->interface_lookup_table, NULL, errno_p,
|
||
error_msg_p);
|
||
for (n = 0; n < isa->num_interfaces; n++)
|
||
{
|
||
isa->interface_lookup_table[n].key = isa->interfaces[n].name;
|
||
isa->interface_lookup_table[n].u.intf = n;
|
||
}
|
||
qsort (isa->interface_lookup_table, isa->num_interfaces,
|
||
sizeof (xtensa_lookup_entry), xtensa_isa_name_compare);
|
||
|
||
/* Set up the funcUnit lookup table. */
|
||
isa->funcUnit_lookup_table =
|
||
bfd_malloc (isa->num_funcUnits * sizeof (xtensa_lookup_entry));
|
||
CHECK_ALLOC_FOR_INIT (isa->funcUnit_lookup_table, NULL, errno_p,
|
||
error_msg_p);
|
||
for (n = 0; n < isa->num_funcUnits; n++)
|
||
{
|
||
isa->funcUnit_lookup_table[n].key = isa->funcUnits[n].name;
|
||
isa->funcUnit_lookup_table[n].u.fun = n;
|
||
}
|
||
qsort (isa->funcUnit_lookup_table, isa->num_funcUnits,
|
||
sizeof (xtensa_lookup_entry), xtensa_isa_name_compare);
|
||
|
||
isa->insnbuf_size = ((isa->insn_size + sizeof (xtensa_insnbuf_word) - 1) /
|
||
sizeof (xtensa_insnbuf_word));
|
||
|
||
return (xtensa_isa) isa;
|
||
}
|
||
|
||
|
||
void
|
||
xtensa_isa_free (xtensa_isa isa)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
int n;
|
||
|
||
/* With this version of the code, the xtensa_isa structure is not
|
||
dynamically allocated, so this function is not essential. Free
|
||
the memory allocated by xtensa_isa_init and restore the xtensa_isa
|
||
structure to its initial state. */
|
||
|
||
if (intisa->opname_lookup_table)
|
||
{
|
||
free (intisa->opname_lookup_table);
|
||
intisa->opname_lookup_table = 0;
|
||
}
|
||
|
||
if (intisa->state_lookup_table)
|
||
{
|
||
free (intisa->state_lookup_table);
|
||
intisa->state_lookup_table = 0;
|
||
}
|
||
|
||
if (intisa->sysreg_lookup_table)
|
||
{
|
||
free (intisa->sysreg_lookup_table);
|
||
intisa->sysreg_lookup_table = 0;
|
||
}
|
||
for (n = 0; n < 2; n++)
|
||
{
|
||
if (intisa->sysreg_table[n])
|
||
{
|
||
free (intisa->sysreg_table[n]);
|
||
intisa->sysreg_table[n] = 0;
|
||
}
|
||
}
|
||
|
||
if (intisa->interface_lookup_table)
|
||
{
|
||
free (intisa->interface_lookup_table);
|
||
intisa->interface_lookup_table = 0;
|
||
}
|
||
|
||
if (intisa->funcUnit_lookup_table)
|
||
{
|
||
free (intisa->funcUnit_lookup_table);
|
||
intisa->funcUnit_lookup_table = 0;
|
||
}
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_isa_name_compare (const void *v1, const void *v2)
|
||
{
|
||
xtensa_lookup_entry *e1 = (xtensa_lookup_entry *) v1;
|
||
xtensa_lookup_entry *e2 = (xtensa_lookup_entry *) v2;
|
||
|
||
return strcasecmp (e1->key, e2->key);
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_isa_maxlength (xtensa_isa isa)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
return intisa->insn_size;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_isa_length_from_chars (xtensa_isa isa, const unsigned char *cp)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
return (intisa->length_decode_fn) (cp);
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_isa_num_pipe_stages (xtensa_isa isa)
|
||
{
|
||
xtensa_opcode opcode;
|
||
xtensa_funcUnit_use *use;
|
||
int num_opcodes, num_uses;
|
||
int i, stage;
|
||
static int max_stage = XTENSA_UNDEFINED;
|
||
|
||
/* Only compute the value once. */
|
||
if (max_stage != XTENSA_UNDEFINED)
|
||
return max_stage + 1;
|
||
|
||
num_opcodes = xtensa_isa_num_opcodes (isa);
|
||
for (opcode = 0; opcode < num_opcodes; opcode++)
|
||
{
|
||
num_uses = xtensa_opcode_num_funcUnit_uses (isa, opcode);
|
||
for (i = 0; i < num_uses; i++)
|
||
{
|
||
use = xtensa_opcode_funcUnit_use (isa, opcode, i);
|
||
stage = use->stage;
|
||
if (stage > max_stage)
|
||
max_stage = stage;
|
||
}
|
||
}
|
||
|
||
return max_stage + 1;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_isa_num_formats (xtensa_isa isa)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
return intisa->num_formats;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_isa_num_opcodes (xtensa_isa isa)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
return intisa->num_opcodes;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_isa_num_regfiles (xtensa_isa isa)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
return intisa->num_regfiles;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_isa_num_states (xtensa_isa isa)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
return intisa->num_states;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_isa_num_sysregs (xtensa_isa isa)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
return intisa->num_sysregs;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_isa_num_interfaces (xtensa_isa isa)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
return intisa->num_interfaces;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_isa_num_funcUnits (xtensa_isa isa)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
return intisa->num_funcUnits;
|
||
}
|
||
|
||
|
||
|
||
/* Instruction formats. */
|
||
|
||
|
||
#define CHECK_FORMAT(INTISA,FMT,ERRVAL) \
|
||
do { \
|
||
if ((FMT) < 0 || (FMT) >= (INTISA)->num_formats) \
|
||
{ \
|
||
xtisa_errno = xtensa_isa_bad_format; \
|
||
strcpy (xtisa_error_msg, "invalid format specifier"); \
|
||
return (ERRVAL); \
|
||
} \
|
||
} while (0)
|
||
|
||
|
||
#define CHECK_SLOT(INTISA,FMT,SLOT,ERRVAL) \
|
||
do { \
|
||
if ((SLOT) < 0 || (SLOT) >= (INTISA)->formats[FMT].num_slots) \
|
||
{ \
|
||
xtisa_errno = xtensa_isa_bad_slot; \
|
||
strcpy (xtisa_error_msg, "invalid slot specifier"); \
|
||
return (ERRVAL); \
|
||
} \
|
||
} while (0)
|
||
|
||
|
||
const char *
|
||
xtensa_format_name (xtensa_isa isa, xtensa_format fmt)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_FORMAT (intisa, fmt, NULL);
|
||
return intisa->formats[fmt].name;
|
||
}
|
||
|
||
|
||
xtensa_format
|
||
xtensa_format_lookup (xtensa_isa isa, const char *fmtname)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
int fmt;
|
||
|
||
if (!fmtname || !*fmtname)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_format;
|
||
strcpy (xtisa_error_msg, "invalid format name");
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
for (fmt = 0; fmt < intisa->num_formats; fmt++)
|
||
{
|
||
if (strcasecmp (fmtname, intisa->formats[fmt].name) == 0)
|
||
return fmt;
|
||
}
|
||
|
||
xtisa_errno = xtensa_isa_bad_format;
|
||
sprintf (xtisa_error_msg, "format \"%s\" not recognized", fmtname);
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
|
||
xtensa_format
|
||
xtensa_format_decode (xtensa_isa isa, const xtensa_insnbuf insn)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_format fmt;
|
||
|
||
fmt = (intisa->format_decode_fn) (insn);
|
||
if (fmt != XTENSA_UNDEFINED)
|
||
return fmt;
|
||
|
||
xtisa_errno = xtensa_isa_bad_format;
|
||
strcpy (xtisa_error_msg, "cannot decode instruction format");
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_format_encode (xtensa_isa isa, xtensa_format fmt, xtensa_insnbuf insn)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_FORMAT (intisa, fmt, -1);
|
||
(*intisa->formats[fmt].encode_fn) (insn);
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_format_length (xtensa_isa isa, xtensa_format fmt)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_FORMAT (intisa, fmt, XTENSA_UNDEFINED);
|
||
return intisa->formats[fmt].length;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_format_num_slots (xtensa_isa isa, xtensa_format fmt)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_FORMAT (intisa, fmt, XTENSA_UNDEFINED);
|
||
return intisa->formats[fmt].num_slots;
|
||
}
|
||
|
||
|
||
xtensa_opcode
|
||
xtensa_format_slot_nop_opcode (xtensa_isa isa, xtensa_format fmt, int slot)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
int slot_id;
|
||
|
||
CHECK_FORMAT (intisa, fmt, XTENSA_UNDEFINED);
|
||
CHECK_SLOT (intisa, fmt, slot, XTENSA_UNDEFINED);
|
||
|
||
slot_id = intisa->formats[fmt].slot_id[slot];
|
||
return xtensa_opcode_lookup (isa, intisa->slots[slot_id].nop_name);
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_format_get_slot (xtensa_isa isa, xtensa_format fmt, int slot,
|
||
const xtensa_insnbuf insn, xtensa_insnbuf slotbuf)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
int slot_id;
|
||
|
||
CHECK_FORMAT (intisa, fmt, -1);
|
||
CHECK_SLOT (intisa, fmt, slot, -1);
|
||
|
||
slot_id = intisa->formats[fmt].slot_id[slot];
|
||
(*intisa->slots[slot_id].get_fn) (insn, slotbuf);
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_format_set_slot (xtensa_isa isa, xtensa_format fmt, int slot,
|
||
xtensa_insnbuf insn, const xtensa_insnbuf slotbuf)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
int slot_id;
|
||
|
||
CHECK_FORMAT (intisa, fmt, -1);
|
||
CHECK_SLOT (intisa, fmt, slot, -1);
|
||
|
||
slot_id = intisa->formats[fmt].slot_id[slot];
|
||
(*intisa->slots[slot_id].set_fn) (insn, slotbuf);
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
/* Opcode information. */
|
||
|
||
|
||
#define CHECK_OPCODE(INTISA,OPC,ERRVAL) \
|
||
do { \
|
||
if ((OPC) < 0 || (OPC) >= (INTISA)->num_opcodes) \
|
||
{ \
|
||
xtisa_errno = xtensa_isa_bad_opcode; \
|
||
strcpy (xtisa_error_msg, "invalid opcode specifier"); \
|
||
return (ERRVAL); \
|
||
} \
|
||
} while (0)
|
||
|
||
|
||
xtensa_opcode
|
||
xtensa_opcode_lookup (xtensa_isa isa, const char *opname)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_lookup_entry entry, *result = 0;
|
||
|
||
if (!opname || !*opname)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_opcode;
|
||
strcpy (xtisa_error_msg, "invalid opcode name");
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
if (intisa->num_opcodes != 0)
|
||
{
|
||
entry.key = opname;
|
||
result = bsearch (&entry, intisa->opname_lookup_table,
|
||
intisa->num_opcodes, sizeof (xtensa_lookup_entry),
|
||
xtensa_isa_name_compare);
|
||
}
|
||
|
||
if (!result)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_opcode;
|
||
sprintf (xtisa_error_msg, "opcode \"%s\" not recognized", opname);
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
return result->u.opcode;
|
||
}
|
||
|
||
|
||
xtensa_opcode
|
||
xtensa_opcode_decode (xtensa_isa isa, xtensa_format fmt, int slot,
|
||
const xtensa_insnbuf slotbuf)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
int slot_id;
|
||
xtensa_opcode opc;
|
||
|
||
CHECK_FORMAT (intisa, fmt, XTENSA_UNDEFINED);
|
||
CHECK_SLOT (intisa, fmt, slot, XTENSA_UNDEFINED);
|
||
|
||
slot_id = intisa->formats[fmt].slot_id[slot];
|
||
|
||
opc = (intisa->slots[slot_id].opcode_decode_fn) (slotbuf);
|
||
if (opc != XTENSA_UNDEFINED)
|
||
return opc;
|
||
|
||
xtisa_errno = xtensa_isa_bad_opcode;
|
||
strcpy (xtisa_error_msg, "cannot decode opcode");
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_opcode_encode (xtensa_isa isa, xtensa_format fmt, int slot,
|
||
xtensa_insnbuf slotbuf, xtensa_opcode opc)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
int slot_id;
|
||
xtensa_opcode_encode_fn encode_fn;
|
||
|
||
CHECK_FORMAT (intisa, fmt, -1);
|
||
CHECK_SLOT (intisa, fmt, slot, -1);
|
||
CHECK_OPCODE (intisa, opc, -1);
|
||
|
||
slot_id = intisa->formats[fmt].slot_id[slot];
|
||
encode_fn = intisa->opcodes[opc].encode_fns[slot_id];
|
||
if (!encode_fn)
|
||
{
|
||
xtisa_errno = xtensa_isa_wrong_slot;
|
||
sprintf (xtisa_error_msg,
|
||
"opcode \"%s\" is not allowed in slot %d of format \"%s\"",
|
||
intisa->opcodes[opc].name, slot, intisa->formats[fmt].name);
|
||
return -1;
|
||
}
|
||
(*encode_fn) (slotbuf);
|
||
return 0;
|
||
}
|
||
|
||
|
||
const char *
|
||
xtensa_opcode_name (xtensa_isa isa, xtensa_opcode opc)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_OPCODE (intisa, opc, NULL);
|
||
return intisa->opcodes[opc].name;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_opcode_is_branch (xtensa_isa isa, xtensa_opcode opc)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED);
|
||
if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_BRANCH) != 0)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_opcode_is_jump (xtensa_isa isa, xtensa_opcode opc)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED);
|
||
if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_JUMP) != 0)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_opcode_is_loop (xtensa_isa isa, xtensa_opcode opc)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED);
|
||
if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_LOOP) != 0)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_opcode_is_call (xtensa_isa isa, xtensa_opcode opc)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED);
|
||
if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_CALL) != 0)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_opcode_num_operands (xtensa_isa isa, xtensa_opcode opc)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
int iclass_id;
|
||
|
||
CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED);
|
||
iclass_id = intisa->opcodes[opc].iclass_id;
|
||
return intisa->iclasses[iclass_id].num_operands;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_opcode_num_stateOperands (xtensa_isa isa, xtensa_opcode opc)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
int iclass_id;
|
||
|
||
CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED);
|
||
iclass_id = intisa->opcodes[opc].iclass_id;
|
||
return intisa->iclasses[iclass_id].num_stateOperands;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_opcode_num_interfaceOperands (xtensa_isa isa, xtensa_opcode opc)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
int iclass_id;
|
||
|
||
CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED);
|
||
iclass_id = intisa->opcodes[opc].iclass_id;
|
||
return intisa->iclasses[iclass_id].num_interfaceOperands;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_opcode_num_funcUnit_uses (xtensa_isa isa, xtensa_opcode opc)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED);
|
||
return intisa->opcodes[opc].num_funcUnit_uses;
|
||
}
|
||
|
||
|
||
xtensa_funcUnit_use *
|
||
xtensa_opcode_funcUnit_use (xtensa_isa isa, xtensa_opcode opc, int u)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_OPCODE (intisa, opc, NULL);
|
||
if (u < 0 || u >= intisa->opcodes[opc].num_funcUnit_uses)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_funcUnit;
|
||
sprintf (xtisa_error_msg, "invalid functional unit use number (%d); "
|
||
"opcode \"%s\" has %d", u, intisa->opcodes[opc].name,
|
||
intisa->opcodes[opc].num_funcUnit_uses);
|
||
return NULL;
|
||
}
|
||
return &intisa->opcodes[opc].funcUnit_uses[u];
|
||
}
|
||
|
||
|
||
|
||
/* Operand information. */
|
||
|
||
|
||
#define CHECK_OPERAND(INTISA,OPC,ICLASS,OPND,ERRVAL) \
|
||
do { \
|
||
if ((OPND) < 0 || (OPND) >= (ICLASS)->num_operands) \
|
||
{ \
|
||
xtisa_errno = xtensa_isa_bad_operand; \
|
||
sprintf (xtisa_error_msg, "invalid operand number (%d); " \
|
||
"opcode \"%s\" has %d operands", (OPND), \
|
||
(INTISA)->opcodes[(OPC)].name, (ICLASS)->num_operands); \
|
||
return (ERRVAL); \
|
||
} \
|
||
} while (0)
|
||
|
||
|
||
static xtensa_operand_internal *
|
||
get_operand (xtensa_isa_internal *intisa, xtensa_opcode opc, int opnd)
|
||
{
|
||
xtensa_iclass_internal *iclass;
|
||
int iclass_id, operand_id;
|
||
|
||
CHECK_OPCODE (intisa, opc, NULL);
|
||
iclass_id = intisa->opcodes[opc].iclass_id;
|
||
iclass = &intisa->iclasses[iclass_id];
|
||
CHECK_OPERAND (intisa, opc, iclass, opnd, NULL);
|
||
operand_id = iclass->operands[opnd].u.operand_id;
|
||
return &intisa->operands[operand_id];
|
||
}
|
||
|
||
|
||
const char *
|
||
xtensa_operand_name (xtensa_isa isa, xtensa_opcode opc, int opnd)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_operand_internal *intop;
|
||
|
||
intop = get_operand (intisa, opc, opnd);
|
||
if (!intop) return NULL;
|
||
return intop->name;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_operand_is_visible (xtensa_isa isa, xtensa_opcode opc, int opnd)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_iclass_internal *iclass;
|
||
int iclass_id, operand_id;
|
||
xtensa_operand_internal *intop;
|
||
|
||
CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED);
|
||
iclass_id = intisa->opcodes[opc].iclass_id;
|
||
iclass = &intisa->iclasses[iclass_id];
|
||
CHECK_OPERAND (intisa, opc, iclass, opnd, XTENSA_UNDEFINED);
|
||
|
||
/* Special case for "sout" operands. */
|
||
if (iclass->operands[opnd].inout == 's')
|
||
return 0;
|
||
|
||
operand_id = iclass->operands[opnd].u.operand_id;
|
||
intop = &intisa->operands[operand_id];
|
||
|
||
if ((intop->flags & XTENSA_OPERAND_IS_INVISIBLE) == 0)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
char
|
||
xtensa_operand_inout (xtensa_isa isa, xtensa_opcode opc, int opnd)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_iclass_internal *iclass;
|
||
int iclass_id;
|
||
char inout;
|
||
|
||
CHECK_OPCODE (intisa, opc, 0);
|
||
iclass_id = intisa->opcodes[opc].iclass_id;
|
||
iclass = &intisa->iclasses[iclass_id];
|
||
CHECK_OPERAND (intisa, opc, iclass, opnd, 0);
|
||
inout = iclass->operands[opnd].inout;
|
||
|
||
/* Special case for "sout" operands. */
|
||
if (inout == 's')
|
||
return 'o';
|
||
|
||
return inout;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_operand_get_field (xtensa_isa isa, xtensa_opcode opc, int opnd,
|
||
xtensa_format fmt, int slot,
|
||
const xtensa_insnbuf slotbuf, uint32 *valp)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_operand_internal *intop;
|
||
int slot_id;
|
||
xtensa_get_field_fn get_fn;
|
||
|
||
intop = get_operand (intisa, opc, opnd);
|
||
if (!intop) return -1;
|
||
|
||
CHECK_FORMAT (intisa, fmt, -1);
|
||
CHECK_SLOT (intisa, fmt, slot, -1);
|
||
|
||
slot_id = intisa->formats[fmt].slot_id[slot];
|
||
if (intop->field_id == XTENSA_UNDEFINED)
|
||
{
|
||
xtisa_errno = xtensa_isa_no_field;
|
||
strcpy (xtisa_error_msg, "implicit operand has no field");
|
||
return -1;
|
||
}
|
||
get_fn = intisa->slots[slot_id].get_field_fns[intop->field_id];
|
||
if (!get_fn)
|
||
{
|
||
xtisa_errno = xtensa_isa_wrong_slot;
|
||
sprintf (xtisa_error_msg,
|
||
"operand \"%s\" does not exist in slot %d of format \"%s\"",
|
||
intop->name, slot, intisa->formats[fmt].name);
|
||
return -1;
|
||
}
|
||
*valp = (*get_fn) (slotbuf);
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_operand_set_field (xtensa_isa isa, xtensa_opcode opc, int opnd,
|
||
xtensa_format fmt, int slot,
|
||
xtensa_insnbuf slotbuf, uint32 val)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_operand_internal *intop;
|
||
int slot_id;
|
||
xtensa_set_field_fn set_fn;
|
||
|
||
intop = get_operand (intisa, opc, opnd);
|
||
if (!intop) return -1;
|
||
|
||
CHECK_FORMAT (intisa, fmt, -1);
|
||
CHECK_SLOT (intisa, fmt, slot, -1);
|
||
|
||
slot_id = intisa->formats[fmt].slot_id[slot];
|
||
if (intop->field_id == XTENSA_UNDEFINED)
|
||
{
|
||
xtisa_errno = xtensa_isa_no_field;
|
||
strcpy (xtisa_error_msg, "implicit operand has no field");
|
||
return -1;
|
||
}
|
||
set_fn = intisa->slots[slot_id].set_field_fns[intop->field_id];
|
||
if (!set_fn)
|
||
{
|
||
xtisa_errno = xtensa_isa_wrong_slot;
|
||
sprintf (xtisa_error_msg,
|
||
"operand \"%s\" does not exist in slot %d of format \"%s\"",
|
||
intop->name, slot, intisa->formats[fmt].name);
|
||
return -1;
|
||
}
|
||
(*set_fn) (slotbuf, val);
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_operand_encode (xtensa_isa isa, xtensa_opcode opc, int opnd,
|
||
uint32 *valp)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_operand_internal *intop;
|
||
uint32 test_val, orig_val;
|
||
|
||
intop = get_operand (intisa, opc, opnd);
|
||
if (!intop)
|
||
return -1;
|
||
|
||
if (!intop->encode)
|
||
{
|
||
/* This is a default operand for a field. How can we tell if the
|
||
value fits in the field? Write the value into the field,
|
||
read it back, and then make sure we get the same value. */
|
||
static xtensa_insnbuf tmpbuf = 0;
|
||
int slot_id;
|
||
|
||
if (!tmpbuf)
|
||
{
|
||
tmpbuf = xtensa_insnbuf_alloc (isa);
|
||
CHECK_ALLOC (tmpbuf, -1);
|
||
}
|
||
|
||
/* A default operand is always associated with a field,
|
||
but check just to be sure.... */
|
||
if (intop->field_id == XTENSA_UNDEFINED)
|
||
{
|
||
xtisa_errno = xtensa_isa_internal_error;
|
||
strcpy (xtisa_error_msg, "operand has no field");
|
||
return -1;
|
||
}
|
||
|
||
/* Find some slot that includes the field. */
|
||
for (slot_id = 0; slot_id < intisa->num_slots; slot_id++)
|
||
{
|
||
xtensa_get_field_fn get_fn =
|
||
intisa->slots[slot_id].get_field_fns[intop->field_id];
|
||
xtensa_set_field_fn set_fn =
|
||
intisa->slots[slot_id].set_field_fns[intop->field_id];
|
||
|
||
if (get_fn && set_fn)
|
||
{
|
||
(*set_fn) (tmpbuf, *valp);
|
||
return ((*get_fn) (tmpbuf) != *valp);
|
||
}
|
||
}
|
||
|
||
/* Couldn't find any slot containing the field.... */
|
||
xtisa_errno = xtensa_isa_no_field;
|
||
strcpy (xtisa_error_msg, "field does not exist in any slot");
|
||
return -1;
|
||
}
|
||
|
||
/* Encode the value. In some cases, the encoding function may detect
|
||
errors, but most of the time the only way to determine if the value
|
||
was successfully encoded is to decode it and check if it matches
|
||
the original value. */
|
||
orig_val = *valp;
|
||
if ((*intop->encode) (valp)
|
||
|| (test_val = *valp, (*intop->decode) (&test_val))
|
||
|| test_val != orig_val)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_value;
|
||
sprintf (xtisa_error_msg, "cannot encode operand value 0x%08x", *valp);
|
||
return -1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_operand_decode (xtensa_isa isa, xtensa_opcode opc, int opnd,
|
||
uint32 *valp)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_operand_internal *intop;
|
||
|
||
intop = get_operand (intisa, opc, opnd);
|
||
if (!intop) return -1;
|
||
|
||
/* Use identity function for "default" operands. */
|
||
if (!intop->decode)
|
||
return 0;
|
||
|
||
if ((*intop->decode) (valp))
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_value;
|
||
sprintf (xtisa_error_msg, "cannot decode operand value 0x%08x", *valp);
|
||
return -1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_operand_is_register (xtensa_isa isa, xtensa_opcode opc, int opnd)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_operand_internal *intop;
|
||
|
||
intop = get_operand (intisa, opc, opnd);
|
||
if (!intop) return XTENSA_UNDEFINED;
|
||
|
||
if ((intop->flags & XTENSA_OPERAND_IS_REGISTER) != 0)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
xtensa_regfile
|
||
xtensa_operand_regfile (xtensa_isa isa, xtensa_opcode opc, int opnd)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_operand_internal *intop;
|
||
|
||
intop = get_operand (intisa, opc, opnd);
|
||
if (!intop) return XTENSA_UNDEFINED;
|
||
|
||
return intop->regfile;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_operand_num_regs (xtensa_isa isa, xtensa_opcode opc, int opnd)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_operand_internal *intop;
|
||
|
||
intop = get_operand (intisa, opc, opnd);
|
||
if (!intop) return XTENSA_UNDEFINED;
|
||
|
||
return intop->num_regs;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_operand_is_known_reg (xtensa_isa isa, xtensa_opcode opc, int opnd)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_operand_internal *intop;
|
||
|
||
intop = get_operand (intisa, opc, opnd);
|
||
if (!intop) return XTENSA_UNDEFINED;
|
||
|
||
if ((intop->flags & XTENSA_OPERAND_IS_UNKNOWN) == 0)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_operand_is_PCrelative (xtensa_isa isa, xtensa_opcode opc, int opnd)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_operand_internal *intop;
|
||
|
||
intop = get_operand (intisa, opc, opnd);
|
||
if (!intop) return XTENSA_UNDEFINED;
|
||
|
||
if ((intop->flags & XTENSA_OPERAND_IS_PCRELATIVE) != 0)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_operand_do_reloc (xtensa_isa isa, xtensa_opcode opc, int opnd,
|
||
uint32 *valp, uint32 pc)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_operand_internal *intop;
|
||
|
||
intop = get_operand (intisa, opc, opnd);
|
||
if (!intop) return -1;
|
||
|
||
if ((intop->flags & XTENSA_OPERAND_IS_PCRELATIVE) == 0)
|
||
return 0;
|
||
|
||
if (!intop->do_reloc)
|
||
{
|
||
xtisa_errno = xtensa_isa_internal_error;
|
||
strcpy (xtisa_error_msg, "operand missing do_reloc function");
|
||
return -1;
|
||
}
|
||
|
||
if ((*intop->do_reloc) (valp, pc))
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_value;
|
||
sprintf (xtisa_error_msg,
|
||
"do_reloc failed for value 0x%08x at PC 0x%08x", *valp, pc);
|
||
return -1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_operand_undo_reloc (xtensa_isa isa, xtensa_opcode opc, int opnd,
|
||
uint32 *valp, uint32 pc)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_operand_internal *intop;
|
||
|
||
intop = get_operand (intisa, opc, opnd);
|
||
if (!intop) return -1;
|
||
|
||
if ((intop->flags & XTENSA_OPERAND_IS_PCRELATIVE) == 0)
|
||
return 0;
|
||
|
||
if (!intop->undo_reloc)
|
||
{
|
||
xtisa_errno = xtensa_isa_internal_error;
|
||
strcpy (xtisa_error_msg, "operand missing undo_reloc function");
|
||
return -1;
|
||
}
|
||
|
||
if ((*intop->undo_reloc) (valp, pc))
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_value;
|
||
sprintf (xtisa_error_msg,
|
||
"undo_reloc failed for value 0x%08x at PC 0x%08x", *valp, pc);
|
||
return -1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
/* State Operands. */
|
||
|
||
|
||
#define CHECK_STATE_OPERAND(INTISA,OPC,ICLASS,STOP,ERRVAL) \
|
||
do { \
|
||
if ((STOP) < 0 || (STOP) >= (ICLASS)->num_stateOperands) \
|
||
{ \
|
||
xtisa_errno = xtensa_isa_bad_operand; \
|
||
sprintf (xtisa_error_msg, "invalid state operand number (%d); " \
|
||
"opcode \"%s\" has %d state operands", (STOP), \
|
||
(INTISA)->opcodes[(OPC)].name, (ICLASS)->num_stateOperands); \
|
||
return (ERRVAL); \
|
||
} \
|
||
} while (0)
|
||
|
||
|
||
xtensa_state
|
||
xtensa_stateOperand_state (xtensa_isa isa, xtensa_opcode opc, int stOp)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_iclass_internal *iclass;
|
||
int iclass_id;
|
||
|
||
CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED);
|
||
iclass_id = intisa->opcodes[opc].iclass_id;
|
||
iclass = &intisa->iclasses[iclass_id];
|
||
CHECK_STATE_OPERAND (intisa, opc, iclass, stOp, XTENSA_UNDEFINED);
|
||
return iclass->stateOperands[stOp].u.state;
|
||
}
|
||
|
||
|
||
char
|
||
xtensa_stateOperand_inout (xtensa_isa isa, xtensa_opcode opc, int stOp)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_iclass_internal *iclass;
|
||
int iclass_id;
|
||
|
||
CHECK_OPCODE (intisa, opc, 0);
|
||
iclass_id = intisa->opcodes[opc].iclass_id;
|
||
iclass = &intisa->iclasses[iclass_id];
|
||
CHECK_STATE_OPERAND (intisa, opc, iclass, stOp, 0);
|
||
return iclass->stateOperands[stOp].inout;
|
||
}
|
||
|
||
|
||
|
||
/* Interface Operands. */
|
||
|
||
|
||
#define CHECK_INTERFACE_OPERAND(INTISA,OPC,ICLASS,IFOP,ERRVAL) \
|
||
do { \
|
||
if ((IFOP) < 0 || (IFOP) >= (ICLASS)->num_interfaceOperands) \
|
||
{ \
|
||
xtisa_errno = xtensa_isa_bad_operand; \
|
||
sprintf (xtisa_error_msg, "invalid interface operand number (%d); " \
|
||
"opcode \"%s\" has %d interface operands", (IFOP), \
|
||
(INTISA)->opcodes[(OPC)].name, \
|
||
(ICLASS)->num_interfaceOperands); \
|
||
return (ERRVAL); \
|
||
} \
|
||
} while (0)
|
||
|
||
|
||
xtensa_interface
|
||
xtensa_interfaceOperand_interface (xtensa_isa isa, xtensa_opcode opc,
|
||
int ifOp)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_iclass_internal *iclass;
|
||
int iclass_id;
|
||
|
||
CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED);
|
||
iclass_id = intisa->opcodes[opc].iclass_id;
|
||
iclass = &intisa->iclasses[iclass_id];
|
||
CHECK_INTERFACE_OPERAND (intisa, opc, iclass, ifOp, XTENSA_UNDEFINED);
|
||
return iclass->interfaceOperands[ifOp];
|
||
}
|
||
|
||
|
||
|
||
/* Register Files. */
|
||
|
||
|
||
#define CHECK_REGFILE(INTISA,RF,ERRVAL) \
|
||
do { \
|
||
if ((RF) < 0 || (RF) >= (INTISA)->num_regfiles) \
|
||
{ \
|
||
xtisa_errno = xtensa_isa_bad_regfile; \
|
||
strcpy (xtisa_error_msg, "invalid regfile specifier"); \
|
||
return (ERRVAL); \
|
||
} \
|
||
} while (0)
|
||
|
||
|
||
xtensa_regfile
|
||
xtensa_regfile_lookup (xtensa_isa isa, const char *name)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
int n;
|
||
|
||
if (!name || !*name)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_regfile;
|
||
strcpy (xtisa_error_msg, "invalid regfile name");
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
/* The expected number of regfiles is small; use a linear search. */
|
||
for (n = 0; n < intisa->num_regfiles; n++)
|
||
{
|
||
if (!filename_cmp (intisa->regfiles[n].name, name))
|
||
return n;
|
||
}
|
||
|
||
xtisa_errno = xtensa_isa_bad_regfile;
|
||
sprintf (xtisa_error_msg, "regfile \"%s\" not recognized", name);
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
|
||
xtensa_regfile
|
||
xtensa_regfile_lookup_shortname (xtensa_isa isa, const char *shortname)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
int n;
|
||
|
||
if (!shortname || !*shortname)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_regfile;
|
||
strcpy (xtisa_error_msg, "invalid regfile shortname");
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
/* The expected number of regfiles is small; use a linear search. */
|
||
for (n = 0; n < intisa->num_regfiles; n++)
|
||
{
|
||
/* Ignore regfile views since they always have the same shortnames
|
||
as their parents. */
|
||
if (intisa->regfiles[n].parent != n)
|
||
continue;
|
||
if (!filename_cmp (intisa->regfiles[n].shortname, shortname))
|
||
return n;
|
||
}
|
||
|
||
xtisa_errno = xtensa_isa_bad_regfile;
|
||
sprintf (xtisa_error_msg, "regfile shortname \"%s\" not recognized",
|
||
shortname);
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
|
||
const char *
|
||
xtensa_regfile_name (xtensa_isa isa, xtensa_regfile rf)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_REGFILE (intisa, rf, NULL);
|
||
return intisa->regfiles[rf].name;
|
||
}
|
||
|
||
|
||
const char *
|
||
xtensa_regfile_shortname (xtensa_isa isa, xtensa_regfile rf)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_REGFILE (intisa, rf, NULL);
|
||
return intisa->regfiles[rf].shortname;
|
||
}
|
||
|
||
|
||
xtensa_regfile
|
||
xtensa_regfile_view_parent (xtensa_isa isa, xtensa_regfile rf)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_REGFILE (intisa, rf, XTENSA_UNDEFINED);
|
||
return intisa->regfiles[rf].parent;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_regfile_num_bits (xtensa_isa isa, xtensa_regfile rf)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_REGFILE (intisa, rf, XTENSA_UNDEFINED);
|
||
return intisa->regfiles[rf].num_bits;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_regfile_num_entries (xtensa_isa isa, xtensa_regfile rf)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_REGFILE (intisa, rf, XTENSA_UNDEFINED);
|
||
return intisa->regfiles[rf].num_entries;
|
||
}
|
||
|
||
|
||
|
||
/* Processor States. */
|
||
|
||
|
||
#define CHECK_STATE(INTISA,ST,ERRVAL) \
|
||
do { \
|
||
if ((ST) < 0 || (ST) >= (INTISA)->num_states) \
|
||
{ \
|
||
xtisa_errno = xtensa_isa_bad_state; \
|
||
strcpy (xtisa_error_msg, "invalid state specifier"); \
|
||
return (ERRVAL); \
|
||
} \
|
||
} while (0)
|
||
|
||
|
||
xtensa_state
|
||
xtensa_state_lookup (xtensa_isa isa, const char *name)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_lookup_entry entry, *result = 0;
|
||
|
||
if (!name || !*name)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_state;
|
||
strcpy (xtisa_error_msg, "invalid state name");
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
if (intisa->num_states != 0)
|
||
{
|
||
entry.key = name;
|
||
result = bsearch (&entry, intisa->state_lookup_table, intisa->num_states,
|
||
sizeof (xtensa_lookup_entry), xtensa_isa_name_compare);
|
||
}
|
||
|
||
if (!result)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_state;
|
||
sprintf (xtisa_error_msg, "state \"%s\" not recognized", name);
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
return result->u.state;
|
||
}
|
||
|
||
|
||
const char *
|
||
xtensa_state_name (xtensa_isa isa, xtensa_state st)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_STATE (intisa, st, NULL);
|
||
return intisa->states[st].name;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_state_num_bits (xtensa_isa isa, xtensa_state st)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_STATE (intisa, st, XTENSA_UNDEFINED);
|
||
return intisa->states[st].num_bits;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_state_is_exported (xtensa_isa isa, xtensa_state st)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_STATE (intisa, st, XTENSA_UNDEFINED);
|
||
if ((intisa->states[st].flags & XTENSA_STATE_IS_EXPORTED) != 0)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_state_is_shared_or (xtensa_isa isa, xtensa_state st)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_STATE (intisa, st, XTENSA_UNDEFINED);
|
||
if ((intisa->states[st].flags & XTENSA_STATE_IS_SHARED_OR) != 0)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
/* Sysregs. */
|
||
|
||
|
||
#define CHECK_SYSREG(INTISA,SYSREG,ERRVAL) \
|
||
do { \
|
||
if ((SYSREG) < 0 || (SYSREG) >= (INTISA)->num_sysregs) \
|
||
{ \
|
||
xtisa_errno = xtensa_isa_bad_sysreg; \
|
||
strcpy (xtisa_error_msg, "invalid sysreg specifier"); \
|
||
return (ERRVAL); \
|
||
} \
|
||
} while (0)
|
||
|
||
|
||
xtensa_sysreg
|
||
xtensa_sysreg_lookup (xtensa_isa isa, int num, int is_user)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
|
||
if (is_user != 0)
|
||
is_user = 1;
|
||
|
||
if (num < 0 || num > intisa->max_sysreg_num[is_user]
|
||
|| intisa->sysreg_table[is_user][num] == XTENSA_UNDEFINED)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_sysreg;
|
||
strcpy (xtisa_error_msg, "sysreg not recognized");
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
return intisa->sysreg_table[is_user][num];
|
||
}
|
||
|
||
|
||
xtensa_sysreg
|
||
xtensa_sysreg_lookup_name (xtensa_isa isa, const char *name)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_lookup_entry entry, *result = 0;
|
||
|
||
if (!name || !*name)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_sysreg;
|
||
strcpy (xtisa_error_msg, "invalid sysreg name");
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
if (intisa->num_sysregs != 0)
|
||
{
|
||
entry.key = name;
|
||
result = bsearch (&entry, intisa->sysreg_lookup_table,
|
||
intisa->num_sysregs, sizeof (xtensa_lookup_entry),
|
||
xtensa_isa_name_compare);
|
||
}
|
||
|
||
if (!result)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_sysreg;
|
||
sprintf (xtisa_error_msg, "sysreg \"%s\" not recognized", name);
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
return result->u.sysreg;
|
||
}
|
||
|
||
|
||
const char *
|
||
xtensa_sysreg_name (xtensa_isa isa, xtensa_sysreg sysreg)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_SYSREG (intisa, sysreg, NULL);
|
||
return intisa->sysregs[sysreg].name;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_sysreg_number (xtensa_isa isa, xtensa_sysreg sysreg)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_SYSREG (intisa, sysreg, XTENSA_UNDEFINED);
|
||
return intisa->sysregs[sysreg].number;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_sysreg_is_user (xtensa_isa isa, xtensa_sysreg sysreg)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_SYSREG (intisa, sysreg, XTENSA_UNDEFINED);
|
||
if (intisa->sysregs[sysreg].is_user)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
/* Interfaces. */
|
||
|
||
|
||
#define CHECK_INTERFACE(INTISA,INTF,ERRVAL) \
|
||
do { \
|
||
if ((INTF) < 0 || (INTF) >= (INTISA)->num_interfaces) \
|
||
{ \
|
||
xtisa_errno = xtensa_isa_bad_interface; \
|
||
strcpy (xtisa_error_msg, "invalid interface specifier"); \
|
||
return (ERRVAL); \
|
||
} \
|
||
} while (0)
|
||
|
||
|
||
xtensa_interface
|
||
xtensa_interface_lookup (xtensa_isa isa, const char *ifname)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_lookup_entry entry, *result = 0;
|
||
|
||
if (!ifname || !*ifname)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_interface;
|
||
strcpy (xtisa_error_msg, "invalid interface name");
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
if (intisa->num_interfaces != 0)
|
||
{
|
||
entry.key = ifname;
|
||
result = bsearch (&entry, intisa->interface_lookup_table,
|
||
intisa->num_interfaces, sizeof (xtensa_lookup_entry),
|
||
xtensa_isa_name_compare);
|
||
}
|
||
|
||
if (!result)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_interface;
|
||
sprintf (xtisa_error_msg, "interface \"%s\" not recognized", ifname);
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
return result->u.intf;
|
||
}
|
||
|
||
|
||
const char *
|
||
xtensa_interface_name (xtensa_isa isa, xtensa_interface intf)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_INTERFACE (intisa, intf, NULL);
|
||
return intisa->interfaces[intf].name;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_interface_num_bits (xtensa_isa isa, xtensa_interface intf)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_INTERFACE (intisa, intf, XTENSA_UNDEFINED);
|
||
return intisa->interfaces[intf].num_bits;
|
||
}
|
||
|
||
|
||
char
|
||
xtensa_interface_inout (xtensa_isa isa, xtensa_interface intf)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_INTERFACE (intisa, intf, 0);
|
||
return intisa->interfaces[intf].inout;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_interface_has_side_effect (xtensa_isa isa, xtensa_interface intf)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_INTERFACE (intisa, intf, XTENSA_UNDEFINED);
|
||
if ((intisa->interfaces[intf].flags & XTENSA_INTERFACE_HAS_SIDE_EFFECT) != 0)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_interface_class_id (xtensa_isa isa, xtensa_interface intf)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_INTERFACE (intisa, intf, XTENSA_UNDEFINED);
|
||
return intisa->interfaces[intf].class_id;
|
||
}
|
||
|
||
|
||
|
||
/* Functional Units. */
|
||
|
||
|
||
#define CHECK_FUNCUNIT(INTISA,FUN,ERRVAL) \
|
||
do { \
|
||
if ((FUN) < 0 || (FUN) >= (INTISA)->num_funcUnits) \
|
||
{ \
|
||
xtisa_errno = xtensa_isa_bad_funcUnit; \
|
||
strcpy (xtisa_error_msg, "invalid functional unit specifier"); \
|
||
return (ERRVAL); \
|
||
} \
|
||
} while (0)
|
||
|
||
|
||
xtensa_funcUnit
|
||
xtensa_funcUnit_lookup (xtensa_isa isa, const char *fname)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
xtensa_lookup_entry entry, *result = 0;
|
||
|
||
if (!fname || !*fname)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_funcUnit;
|
||
strcpy (xtisa_error_msg, "invalid functional unit name");
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
if (intisa->num_funcUnits != 0)
|
||
{
|
||
entry.key = fname;
|
||
result = bsearch (&entry, intisa->funcUnit_lookup_table,
|
||
intisa->num_funcUnits, sizeof (xtensa_lookup_entry),
|
||
xtensa_isa_name_compare);
|
||
}
|
||
|
||
if (!result)
|
||
{
|
||
xtisa_errno = xtensa_isa_bad_funcUnit;
|
||
sprintf (xtisa_error_msg,
|
||
"functional unit \"%s\" not recognized", fname);
|
||
return XTENSA_UNDEFINED;
|
||
}
|
||
|
||
return result->u.fun;
|
||
}
|
||
|
||
|
||
const char *
|
||
xtensa_funcUnit_name (xtensa_isa isa, xtensa_funcUnit fun)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_FUNCUNIT (intisa, fun, NULL);
|
||
return intisa->funcUnits[fun].name;
|
||
}
|
||
|
||
|
||
int
|
||
xtensa_funcUnit_num_copies (xtensa_isa isa, xtensa_funcUnit fun)
|
||
{
|
||
xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa;
|
||
CHECK_FUNCUNIT (intisa, fun, XTENSA_UNDEFINED);
|
||
return intisa->funcUnits[fun].num_copies;
|
||
}
|
||
|