| /* Configurable Xtensa ISA support. |
| Copyright (C) 2003-2024 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" |
| #include "xtensa-dynconfig.h" |
| |
| static xtensa_isa_status xtisa_errno; |
| static 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] |= (unsigned) (*cp & 0xff) << bit_inx; |
| } |
| } |
| |
| |
| /* ISA information. */ |
| |
| extern xtensa_isa_internal xtensa_modules; |
| |
| static xtensa_isa_internal *xtensa_get_modules (void) |
| { |
| static xtensa_isa_internal *modules; |
| |
| if (!modules) |
| modules = (xtensa_isa_internal *) xtensa_load_config ("xtensa_modules", |
| &xtensa_modules, |
| NULL); |
| return modules; |
| } |
| |
| xtensa_isa |
| xtensa_isa_init (xtensa_isa_status *errno_p, char **error_msg_p) |
| { |
| xtensa_isa_internal *isa = xtensa_get_modules (); |
| int n, is_user; |
| |
| /* Set up the opcode name lookup table. */ |
| isa->opname_lookup_table = |
| bfd_malloc (isa->num_opcodes * sizeof (xtensa_lookup_entry)); |
| CHECK_ALLOC_FOR_INIT (isa->opname_lookup_table, NULL, errno_p, error_msg_p); |
| for (n = 0; n < isa->num_opcodes; n++) |
| { |
| isa->opname_lookup_table[n].key = isa->opcodes[n].name; |
| isa->opname_lookup_table[n].u.opcode = n; |
| } |
| qsort (isa->opname_lookup_table, isa->num_opcodes, |
| sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| |
| /* Set up the state name lookup table. */ |
| isa->state_lookup_table = |
| bfd_malloc (isa->num_states * sizeof (xtensa_lookup_entry)); |
| CHECK_ALLOC_FOR_INIT (isa->state_lookup_table, NULL, errno_p, error_msg_p); |
| for (n = 0; n < isa->num_states; n++) |
| { |
| isa->state_lookup_table[n].key = isa->states[n].name; |
| isa->state_lookup_table[n].u.state = n; |
| } |
| qsort (isa->state_lookup_table, isa->num_states, |
| sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| |
| /* Set up the sysreg name lookup table. */ |
| isa->sysreg_lookup_table = |
| bfd_malloc (isa->num_sysregs * sizeof (xtensa_lookup_entry)); |
| CHECK_ALLOC_FOR_INIT (isa->sysreg_lookup_table, NULL, errno_p, error_msg_p); |
| for (n = 0; n < isa->num_sysregs; n++) |
| { |
| isa->sysreg_lookup_table[n].key = isa->sysregs[n].name; |
| isa->sysreg_lookup_table[n].u.sysreg = n; |
| } |
| qsort (isa->sysreg_lookup_table, isa->num_sysregs, |
| sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| |
| /* Set up the user & system sysreg number tables. */ |
| for (is_user = 0; is_user < 2; is_user++) |
| { |
| isa->sysreg_table[is_user] = |
| bfd_malloc ((isa->max_sysreg_num[is_user] + 1) |
| * sizeof (xtensa_sysreg)); |
| CHECK_ALLOC_FOR_INIT (isa->sysreg_table[is_user], NULL, |
| errno_p, error_msg_p); |
| |
| for (n = 0; n <= isa->max_sysreg_num[is_user]; n++) |
| isa->sysreg_table[is_user][n] = XTENSA_UNDEFINED; |
| } |
| for (n = 0; n < isa->num_sysregs; n++) |
| { |
| xtensa_sysreg_internal *sreg = &isa->sysregs[n]; |
| is_user = sreg->is_user; |
| |
| if (sreg->number >= 0) |
| isa->sysreg_table[is_user][sreg->number] = n; |
| } |
| |
| /* Set up the interface lookup table. */ |
| isa->interface_lookup_table = |
| bfd_malloc (isa->num_interfaces * sizeof (xtensa_lookup_entry)); |
| CHECK_ALLOC_FOR_INIT (isa->interface_lookup_table, NULL, errno_p, |
| error_msg_p); |
| for (n = 0; n < isa->num_interfaces; n++) |
| { |
| isa->interface_lookup_table[n].key = isa->interfaces[n].name; |
| isa->interface_lookup_table[n].u.intf = n; |
| } |
| qsort (isa->interface_lookup_table, isa->num_interfaces, |
| sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| |
| /* Set up the funcUnit lookup table. */ |
| isa->funcUnit_lookup_table = |
| bfd_malloc (isa->num_funcUnits * sizeof (xtensa_lookup_entry)); |
| CHECK_ALLOC_FOR_INIT (isa->funcUnit_lookup_table, NULL, errno_p, |
| error_msg_p); |
| for (n = 0; n < isa->num_funcUnits; n++) |
| { |
| isa->funcUnit_lookup_table[n].key = isa->funcUnits[n].name; |
| isa->funcUnit_lookup_table[n].u.fun = n; |
| } |
| qsort (isa->funcUnit_lookup_table, isa->num_funcUnits, |
| sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| |
| isa->insnbuf_size = ((isa->insn_size + sizeof (xtensa_insnbuf_word) - 1) / |
| sizeof (xtensa_insnbuf_word)); |
| |
| return (xtensa_isa) isa; |
| } |
| |
| |
| void |
| xtensa_isa_free (xtensa_isa isa) |
| { |
| xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| int n; |
| |
| /* With this version of the code, the xtensa_isa structure is not |
| dynamically allocated, so this function is not essential. Free |
| the memory allocated by xtensa_isa_init and restore the xtensa_isa |
| structure to its initial state. */ |
| |
| free (intisa->opname_lookup_table); |
| intisa->opname_lookup_table = 0; |
| |
| free (intisa->state_lookup_table); |
| intisa->state_lookup_table = 0; |
| |
| free (intisa->sysreg_lookup_table); |
| intisa->sysreg_lookup_table = 0; |
| |
| for (n = 0; n < 2; n++) |
| { |
| free (intisa->sysreg_table[n]); |
| intisa->sysreg_table[n] = 0; |
| } |
| |
| free (intisa->interface_lookup_table); |
| intisa->interface_lookup_table = 0; |
| |
| 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; |
| } |
| |