+#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)
+
+
+\f
+/* 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;
+ }
+}
+
+
+\f
+/* 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;
+
+ 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;
+}
+
+
+\f
+/* 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;
+}
+
+
+\f
+/* 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];
+}
+
+
+\f
+/* 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;
projects / deliverable / binutils-gdb.git / blobdiff