diff options
Diffstat (limited to 'binutils-2.17/bfd/xtensa-isa.c')
| -rw-r--r-- | binutils-2.17/bfd/xtensa-isa.c | 1777 |
1 files changed, 0 insertions, 1777 deletions
diff --git a/binutils-2.17/bfd/xtensa-isa.c b/binutils-2.17/bfd/xtensa-isa.c deleted file mode 100644 index 5fcf51ee..00000000 --- a/binutils-2.17/bfd/xtensa-isa.c +++ /dev/null @@ -1,1777 +0,0 @@ -/* Configurable Xtensa ISA support. - Copyright 2003, 2004, 2005 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 2 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 "bfd.h" -#include "sysdep.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; - - 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, max_stage = XTENSA_UNDEFINED; - - 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. */ - - xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; - 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 (!strcmp (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 (!strcmp (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; -} - - - -/* 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; -} - |