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Diffstat (limited to 'target/xtensa/xtensa-isa.c')
| -rw-r--r-- | target/xtensa/xtensa-isa.c | 1745 |
1 files changed, 1745 insertions, 0 deletions
diff --git a/target/xtensa/xtensa-isa.c b/target/xtensa/xtensa-isa.c new file mode 100644 index 0000000000..e0076a694f --- /dev/null +++ b/target/xtensa/xtensa-isa.c @@ -0,0 +1,1745 @@ +/* Configurable Xtensa ISA support. + * + * Copyright (c) 2001-2011 Tensilica Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.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. */ + +xtensa_isa xtensa_isa_init(void *xtensa_modules, 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 = + 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 = + 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 = + 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] = + 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 = + 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 = + 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)); + isa->num_stages = XTENSA_UNDEFINED; + + return (xtensa_isa)isa; +} + + +void xtensa_isa_free(xtensa_isa isa) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + int n; + + /* + * With this version of the code, the xtensa_isa structure is not + * dynamically allocated, so this function is not essential. Free + * the memory allocated by xtensa_isa_init and restore the xtensa_isa + * structure to its initial state. + */ + + if (intisa->opname_lookup_table) { + free(intisa->opname_lookup_table); + intisa->opname_lookup_table = 0; + } + + if (intisa->state_lookup_table) { + free(intisa->state_lookup_table); + intisa->state_lookup_table = 0; + } + + if (intisa->sysreg_lookup_table) { + free(intisa->sysreg_lookup_table); + intisa->sysreg_lookup_table = 0; + } + for (n = 0; n < 2; n++) { + if (intisa->sysreg_table[n]) { + free(intisa->sysreg_table[n]); + intisa->sysreg_table[n] = 0; + } + } + + if (intisa->interface_lookup_table) { + free(intisa->interface_lookup_table); + intisa->interface_lookup_table = 0; + } + + if (intisa->funcUnit_lookup_table) { + free(intisa->funcUnit_lookup_table); + intisa->funcUnit_lookup_table = 0; + } +} + + +int xtensa_isa_name_compare(const void *v1, const void *v2) +{ + xtensa_lookup_entry *e1 = (xtensa_lookup_entry *)v1; + xtensa_lookup_entry *e2 = (xtensa_lookup_entry *)v2; + + return strcasecmp(e1->key, e2->key); +} + + +int xtensa_isa_maxlength(xtensa_isa isa) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + return intisa->insn_size; +} + + +int xtensa_isa_length_from_chars(xtensa_isa isa, const unsigned char *cp) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + return (intisa->length_decode_fn)(cp); +} + + +int xtensa_isa_num_pipe_stages(xtensa_isa isa) +{ + xtensa_opcode opcode; + xtensa_funcUnit_use *use; + int num_opcodes, num_uses; + int i, stage, max_stage; + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + + /* Only compute the value once. */ + if (intisa->num_stages != XTENSA_UNDEFINED) { + return intisa->num_stages; + } + + 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; + } + } + } + + intisa->num_stages = max_stage + 1; + return intisa->num_states; +} + + +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" and "_sin" operands. */ + if (inout == 's') { + return 'o'; + } + if (inout == 't') { + return 'i'; + } + 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_t *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_t 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_t *valp) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + xtensa_operand_internal *intop; + uint32_t 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; + 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_t *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_t *valp, uint32_t 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_t *valp, uint32_t pc) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + xtensa_operand_internal *intop; + + intop = get_operand(intisa, opc, opnd); + if (!intop) { + return -1; + } + + if ((intop->flags & XTENSA_OPERAND_IS_PCRELATIVE) == 0) { + return 0; + } + + if (!intop->undo_reloc) { + xtisa_errno = xtensa_isa_internal_error; + strcpy(xtisa_error_msg, "operand missing undo_reloc function"); + return -1; + } + + if ((*intop->undo_reloc)(valp, pc)) { + xtisa_errno = xtensa_isa_bad_value; + sprintf(xtisa_error_msg, + "undo_reloc failed for value 0x%08x at PC 0x%08x", *valp, pc); + return -1; + } + + return 0; +} + + +/* State Operands. */ + + +#define CHECK_STATE_OPERAND(INTISA, OPC, ICLASS, STOP, ERRVAL) \ + do { \ + if ((STOP) < 0 || (STOP) >= (ICLASS)->num_stateOperands) { \ + xtisa_errno = xtensa_isa_bad_operand; \ + sprintf(xtisa_error_msg, "invalid state operand number (%d); " \ + "opcode \"%s\" has %d state operands", (STOP), \ + (INTISA)->opcodes[(OPC)].name, \ + (ICLASS)->num_stateOperands); \ + return ERRVAL; \ + } \ + } while (0) + + +xtensa_state xtensa_stateOperand_state(xtensa_isa isa, xtensa_opcode opc, + int stOp) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + xtensa_iclass_internal *iclass; + int iclass_id; + + CHECK_OPCODE(intisa, opc, XTENSA_UNDEFINED); + iclass_id = intisa->opcodes[opc].iclass_id; + iclass = &intisa->iclasses[iclass_id]; + CHECK_STATE_OPERAND(intisa, opc, iclass, stOp, XTENSA_UNDEFINED); + return iclass->stateOperands[stOp].u.state; +} + + +char xtensa_stateOperand_inout(xtensa_isa isa, xtensa_opcode opc, int stOp) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + xtensa_iclass_internal *iclass; + int iclass_id; + + CHECK_OPCODE(intisa, opc, 0); + iclass_id = intisa->opcodes[opc].iclass_id; + iclass = &intisa->iclasses[iclass_id]; + CHECK_STATE_OPERAND(intisa, opc, iclass, stOp, 0); + return iclass->stateOperands[stOp].inout; +} + + +/* Interface Operands. */ + + +#define CHECK_INTERFACE_OPERAND(INTISA, OPC, ICLASS, IFOP, ERRVAL) \ + do { \ + if ((IFOP) < 0 || (IFOP) >= (ICLASS)->num_interfaceOperands) { \ + xtisa_errno = xtensa_isa_bad_operand; \ + sprintf(xtisa_error_msg, \ + "invalid interface operand number (%d); " \ + "opcode \"%s\" has %d interface operands", (IFOP), \ + (INTISA)->opcodes[(OPC)].name, \ + (ICLASS)->num_interfaceOperands); \ + return ERRVAL; \ + } \ + } while (0) + + +xtensa_interface xtensa_interfaceOperand_interface(xtensa_isa isa, + xtensa_opcode opc, + int ifOp) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + xtensa_iclass_internal *iclass; + int iclass_id; + + CHECK_OPCODE(intisa, opc, XTENSA_UNDEFINED); + iclass_id = intisa->opcodes[opc].iclass_id; + iclass = &intisa->iclasses[iclass_id]; + CHECK_INTERFACE_OPERAND(intisa, opc, iclass, ifOp, XTENSA_UNDEFINED); + return iclass->interfaceOperands[ifOp]; +} + + +/* Register Files. */ + + +#define CHECK_REGFILE(INTISA, RF, ERRVAL) \ + do { \ + if ((RF) < 0 || (RF) >= (INTISA)->num_regfiles) { \ + xtisa_errno = xtensa_isa_bad_regfile; \ + strcpy(xtisa_error_msg, "invalid regfile specifier"); \ + return ERRVAL; \ + } \ + } while (0) + + +xtensa_regfile xtensa_regfile_lookup(xtensa_isa isa, const char *name) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + int n; + + if (!name || !*name) { + xtisa_errno = xtensa_isa_bad_regfile; + strcpy(xtisa_error_msg, "invalid regfile name"); + return XTENSA_UNDEFINED; + } + + /* The expected number of regfiles is small; use a linear search. */ + for (n = 0; n < intisa->num_regfiles; n++) { + if (!strcmp(intisa->regfiles[n].name, name)) { + return n; + } + } + + xtisa_errno = xtensa_isa_bad_regfile; + sprintf(xtisa_error_msg, "regfile \"%s\" not recognized", name); + return XTENSA_UNDEFINED; +} + + +xtensa_regfile xtensa_regfile_lookup_shortname(xtensa_isa isa, + const char *shortname) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + int n; + + if (!shortname || !*shortname) { + xtisa_errno = xtensa_isa_bad_regfile; + strcpy(xtisa_error_msg, "invalid regfile shortname"); + return XTENSA_UNDEFINED; + } + + /* The expected number of regfiles is small; use a linear search. */ + for (n = 0; n < intisa->num_regfiles; n++) { + /* + * Ignore regfile views since they always have the same shortnames + * as their parents. + */ + if (intisa->regfiles[n].parent != n) { + continue; + } + if (!strcmp(intisa->regfiles[n].shortname, shortname)) { + return n; + } + } + + xtisa_errno = xtensa_isa_bad_regfile; + sprintf(xtisa_error_msg, "regfile shortname \"%s\" not recognized", + shortname); + return XTENSA_UNDEFINED; +} + + +const char *xtensa_regfile_name(xtensa_isa isa, xtensa_regfile rf) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + + CHECK_REGFILE(intisa, rf, NULL); + return intisa->regfiles[rf].name; +} + + +const char *xtensa_regfile_shortname(xtensa_isa isa, xtensa_regfile rf) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + + CHECK_REGFILE(intisa, rf, NULL); + return intisa->regfiles[rf].shortname; +} + + +xtensa_regfile xtensa_regfile_view_parent(xtensa_isa isa, xtensa_regfile rf) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + + CHECK_REGFILE(intisa, rf, XTENSA_UNDEFINED); + return intisa->regfiles[rf].parent; +} + + +int xtensa_regfile_num_bits(xtensa_isa isa, xtensa_regfile rf) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + + CHECK_REGFILE(intisa, rf, XTENSA_UNDEFINED); + return intisa->regfiles[rf].num_bits; +} + + +int xtensa_regfile_num_entries(xtensa_isa isa, xtensa_regfile rf) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + + CHECK_REGFILE(intisa, rf, XTENSA_UNDEFINED); + return intisa->regfiles[rf].num_entries; +} + + +/* Processor States. */ + + +#define CHECK_STATE(INTISA, ST, ERRVAL) \ + do { \ + if ((ST) < 0 || (ST) >= (INTISA)->num_states) { \ + xtisa_errno = xtensa_isa_bad_state; \ + strcpy(xtisa_error_msg, "invalid state specifier"); \ + return ERRVAL; \ + } \ + } while (0) + + +xtensa_state xtensa_state_lookup(xtensa_isa isa, const char *name) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + xtensa_lookup_entry entry, *result = 0; + + if (!name || !*name) { + xtisa_errno = xtensa_isa_bad_state; + strcpy(xtisa_error_msg, "invalid state name"); + return XTENSA_UNDEFINED; + } + + if (intisa->num_states != 0) { + entry.key = name; + result = bsearch(&entry, intisa->state_lookup_table, + intisa->num_states, sizeof(xtensa_lookup_entry), + xtensa_isa_name_compare); + } + + if (!result) { + xtisa_errno = xtensa_isa_bad_state; + sprintf(xtisa_error_msg, "state \"%s\" not recognized", name); + return XTENSA_UNDEFINED; + } + + return result->u.state; +} + + +const char *xtensa_state_name(xtensa_isa isa, xtensa_state st) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + + CHECK_STATE(intisa, st, NULL); + return intisa->states[st].name; +} + + +int xtensa_state_num_bits(xtensa_isa isa, xtensa_state st) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + + CHECK_STATE(intisa, st, XTENSA_UNDEFINED); + return intisa->states[st].num_bits; +} + + +int xtensa_state_is_exported(xtensa_isa isa, xtensa_state st) +{ + xtensa_isa_internal *intisa = (xtensa_isa_internal *)isa; + + CHECK_STATE(intisa, st, XTENSA_UNDEFINED); + if ((intisa->states[st].flags & XTENSA_STATE_IS_EXPORTED) != 0) { + return 1; + } + return 0; +} + + +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; +} |