diff options
Diffstat (limited to 'binutils-2.25/bfd/xtensa-isa.c')
| -rw-r--r-- | binutils-2.25/bfd/xtensa-isa.c | 1793 |
1 files changed, 1793 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/xtensa-isa.c b/binutils-2.25/bfd/xtensa-isa.c new file mode 100644 index 00000000..cf5543eb --- /dev/null +++ b/binutils-2.25/bfd/xtensa-isa.c @@ -0,0 +1,1793 @@ +/* Configurable Xtensa ISA support. + Copyright 2003, 2004, 2005, 2007, 2008, 2009 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; + + 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; +} + |