--- /dev/null
+/* TI PRU disassemble routines
+ Copyright (C) 2014-2016 Free Software Foundation, Inc.
+ Contributed by Dimitar Dimitrov <dimitar@dinux.eu>
+
+ This file is part of the GNU opcodes library.
+
+ This library 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, or (at your option)
+ any later version.
+
+ It 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 file; see the file COPYING. If not, write to the
+ Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+
+#include "sysdep.h"
+#include "dis-asm.h"
+#include "opcode/pru.h"
+#include "libiberty.h"
+#include <string.h>
+#include <assert.h>
+
+/* No symbol table is available when this code runs out in an embedded
+ system as when it is used for disassembler support in a monitor. */
+#if !defined (EMBEDDED_ENV)
+#define SYMTAB_AVAILABLE 1
+#include "elf-bfd.h"
+#include "elf/pru.h"
+#endif
+
+/* Length of PRU instruction in bytes. */
+#define INSNLEN 4
+
+/* Return a pointer to an pru_opcode struct for a given instruction
+ opcode, or NULL if there is an error. */
+const struct pru_opcode *
+pru_find_opcode (unsigned long opcode)
+{
+ const struct pru_opcode *p;
+ const struct pru_opcode *op = NULL;
+ const struct pru_opcode *pseudo_op = NULL;
+
+ for (p = pru_opcodes; p < &pru_opcodes[NUMOPCODES]; p++)
+ {
+ if ((p->mask & opcode) == p->match)
+ {
+ if ((p->pinfo & PRU_INSN_MACRO) == PRU_INSN_MACRO)
+ pseudo_op = p;
+ else if ((p->pinfo & PRU_INSN_LDI32) == PRU_INSN_LDI32)
+ /* ignore - should be caught with regular patterns */;
+ else
+ op = p;
+ }
+ }
+
+ return pseudo_op ? pseudo_op : op;
+}
+
+/* There are 32 regular registers, each with 8 possible subfield selectors. */
+#define NUMREGNAMES (32 * 8)
+
+static void
+pru_print_insn_arg_reg (unsigned int r, unsigned int sel,
+ disassemble_info *info)
+{
+ unsigned int i = r * RSEL_NUM_ITEMS + sel;
+ assert (i < (unsigned int)pru_num_regs);
+ assert (i < NUMREGNAMES);
+ (*info->fprintf_func) (info->stream, "%s", pru_regs[i].name);
+}
+
+/* The function pru_print_insn_arg uses the character pointed
+ to by ARGPTR to determine how it print the next token or separator
+ character in the arguments to an instruction. */
+static int
+pru_print_insn_arg (const char *argptr,
+ unsigned long opcode, bfd_vma address,
+ disassemble_info *info)
+{
+ long offs = 0;
+ unsigned long i = 0;
+ unsigned long io = 0;
+
+ switch (*argptr)
+ {
+ case ',':
+ (*info->fprintf_func) (info->stream, "%c ", *argptr);
+ break;
+ case 'd':
+ pru_print_insn_arg_reg (GET_INSN_FIELD (RD, opcode),
+ GET_INSN_FIELD (RDSEL, opcode),
+ info);
+ break;
+ case 'D':
+ /* The first 4 values for RDB and RSEL are the same, so we
+ can reuse some code. */
+ pru_print_insn_arg_reg (GET_INSN_FIELD (RD, opcode),
+ GET_INSN_FIELD (RDB, opcode),
+ info);
+ break;
+ case 's':
+ pru_print_insn_arg_reg (GET_INSN_FIELD (RS1, opcode),
+ GET_INSN_FIELD (RS1SEL, opcode),
+ info);
+ break;
+ case 'S':
+ pru_print_insn_arg_reg (GET_INSN_FIELD (RS1, opcode),
+ RSEL_31_0,
+ info);
+ break;
+ case 'b':
+ io = GET_INSN_FIELD (IO, opcode);
+
+ if (io)
+ {
+ i = GET_INSN_FIELD (IMM8, opcode);
+ (*info->fprintf_func) (info->stream, "%ld", i);
+ }
+ else
+ {
+ pru_print_insn_arg_reg (GET_INSN_FIELD (RS2, opcode),
+ GET_INSN_FIELD (RS2SEL, opcode),
+ info);
+ }
+ break;
+ case 'B':
+ io = GET_INSN_FIELD (IO, opcode);
+
+ if (io)
+ {
+ i = GET_INSN_FIELD (IMM8, opcode) + 1;
+ (*info->fprintf_func) (info->stream, "%ld", i);
+ }
+ else
+ {
+ pru_print_insn_arg_reg (GET_INSN_FIELD (RS2, opcode),
+ GET_INSN_FIELD (RS2SEL, opcode),
+ info);
+ }
+ break;
+ case 'j':
+ io = GET_INSN_FIELD (IO, opcode);
+
+ if (io)
+ {
+ /* For the sake of pretty-printing, dump text addresses with
+ their "virtual" offset that we use for distinguishing
+ PMEM vs DMEM. This is needed for printing the correct text
+ labels. */
+ bfd_vma text_offset = address & ~0x3fffff;
+ i = GET_INSN_FIELD (IMM16, opcode) * 4;
+ (*info->print_address_func) (i + text_offset, info);
+ }
+ else
+ {
+ pru_print_insn_arg_reg (GET_INSN_FIELD (RS2, opcode),
+ GET_INSN_FIELD (RS2SEL, opcode),
+ info);
+ }
+ break;
+ case 'W':
+ i = GET_INSN_FIELD (IMM16, opcode);
+ (*info->fprintf_func) (info->stream, "%ld", i);
+ break;
+ case 'o':
+ offs = GET_BROFF_SIGNED (opcode) * 4;
+ (*info->print_address_func) (address + offs, info);
+ break;
+ case 'O':
+ offs = GET_INSN_FIELD (LOOP_JMPOFFS, opcode) * 4;
+ (*info->print_address_func) (address + offs, info);
+ break;
+ case 'l':
+ i = GET_BURSTLEN (opcode);
+ if (i < LSSBBO_BYTECOUNT_R0_BITS7_0)
+ (*info->fprintf_func) (info->stream, "%ld", i + 1);
+ else
+ {
+ i -= LSSBBO_BYTECOUNT_R0_BITS7_0;
+ (*info->fprintf_func) (info->stream, "r0.b%ld", i);
+ }
+ break;
+ case 'n':
+ i = GET_INSN_FIELD (XFR_LENGTH, opcode);
+ if (i < LSSBBO_BYTECOUNT_R0_BITS7_0)
+ (*info->fprintf_func) (info->stream, "%ld", i + 1);
+ else
+ {
+ i -= LSSBBO_BYTECOUNT_R0_BITS7_0;
+ (*info->fprintf_func) (info->stream, "r0.b%ld", i);
+ }
+ break;
+ case 'c':
+ i = GET_INSN_FIELD (CB, opcode);
+ (*info->fprintf_func) (info->stream, "%ld", i);
+ break;
+ case 'w':
+ i = GET_INSN_FIELD (WAKEONSTATUS, opcode);
+ (*info->fprintf_func) (info->stream, "%ld", i);
+ break;
+ case 'x':
+ i = GET_INSN_FIELD (XFR_WBA, opcode);
+ (*info->fprintf_func) (info->stream, "%ld", i);
+ break;
+ default:
+ (*info->fprintf_func) (info->stream, "unknown");
+ break;
+ }
+ return 0;
+}
+
+/* pru_disassemble does all the work of disassembling a PRU
+ instruction opcode. */
+static int
+pru_disassemble (bfd_vma address, unsigned long opcode,
+ disassemble_info *info)
+{
+ const struct pru_opcode *op;
+
+ info->bytes_per_line = INSNLEN;
+ info->bytes_per_chunk = INSNLEN;
+ info->display_endian = info->endian;
+ info->insn_info_valid = 1;
+ info->branch_delay_insns = 0;
+ info->data_size = 0;
+ info->insn_type = dis_nonbranch;
+ info->target = 0;
+ info->target2 = 0;
+
+ /* Find the major opcode and use this to disassemble
+ the instruction and its arguments. */
+ op = pru_find_opcode (opcode);
+
+ if (op != NULL)
+ {
+ (*info->fprintf_func) (info->stream, "%s", op->name);
+
+ const char *argstr = op->args;
+ if (argstr != NULL && *argstr != '\0')
+ {
+ (*info->fprintf_func) (info->stream, "\t");
+ while (*argstr != '\0')
+ {
+ pru_print_insn_arg (argstr, opcode, address, info);
+ ++argstr;
+ }
+ }
+ }
+ else
+ {
+ /* Handle undefined instructions. */
+ info->insn_type = dis_noninsn;
+ (*info->fprintf_func) (info->stream, "0x%lx", opcode);
+ }
+ /* Tell the caller how far to advance the program counter. */
+ return INSNLEN;
+}
+
+
+/* print_insn_pru is the main disassemble function for PRU. */
+int
+print_insn_pru (bfd_vma address, disassemble_info *info)
+{
+ bfd_byte buffer[INSNLEN];
+ int status;
+
+ status = (*info->read_memory_func) (address, buffer, INSNLEN, info);
+ if (status == 0)
+ {
+ unsigned long insn;
+ insn = (unsigned long) bfd_getl32 (buffer);
+ status = pru_disassemble (address, insn, info);
+ }
+ else
+ {
+ (*info->memory_error_func) (status, address, info);
+ status = -1;
+ }
+ return status;
+}
--- /dev/null
+/* TI PRU opcode list.
+ Copyright (C) 2014-2016 Free Software Foundation, Inc.
+ Contributed by Dimitar Dimitrov <dimitar@dinux.eu>
+
+ This file is part of the GNU opcodes library.
+
+ This library 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, or (at your option)
+ any later version.
+
+ It 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 file; see the file COPYING. If not, write to the
+ Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+
+/* Source:
+ http://processors.wiki.ti.com/index.php/Programmable_Realtime_Unit */
+
+#include "sysdep.h"
+#include <stdio.h>
+#include "opcode/pru.h"
+
+/* Register string table. */
+
+#define DECLARE_REG(name, index) \
+ { #name ".b0", (index), RSEL_7_0 }, \
+ { #name ".b1", (index), RSEL_15_8 }, \
+ { #name ".b2", (index), RSEL_23_16 }, \
+ { #name ".b3", (index), RSEL_31_24 }, \
+ { #name ".w0", (index), RSEL_15_0 }, \
+ { #name ".w1", (index), RSEL_23_8 }, \
+ { #name ".w2", (index), RSEL_31_16 }, \
+ { #name , (index), RSEL_31_0 }
+
+const struct pru_reg pru_regs[] = {
+ /* Standard register names. */
+ DECLARE_REG (r0, 0),
+ DECLARE_REG (r1, 1),
+ DECLARE_REG (sp, 2), /* Stack pointer. */
+ DECLARE_REG (ra, 3), /* Return address. */
+ DECLARE_REG (fp, 4), /* Frame pointer. */
+ DECLARE_REG (r5, 5),
+ DECLARE_REG (r6, 6),
+ DECLARE_REG (r7, 7),
+ DECLARE_REG (r8, 8),
+ DECLARE_REG (r9, 9),
+ DECLARE_REG (r10, 10),
+ DECLARE_REG (r11, 11),
+ DECLARE_REG (r12, 12),
+ DECLARE_REG (r13, 13),
+ DECLARE_REG (r14, 14),
+ DECLARE_REG (r15, 15),
+ DECLARE_REG (r16, 16),
+ DECLARE_REG (r17, 17),
+ DECLARE_REG (r18, 18),
+ DECLARE_REG (r19, 19),
+ DECLARE_REG (r20, 20),
+ DECLARE_REG (r21, 21),
+ DECLARE_REG (r22, 22),
+ DECLARE_REG (r23, 23),
+ DECLARE_REG (r24, 24),
+ DECLARE_REG (r25, 25),
+ DECLARE_REG (r26, 26),
+ DECLARE_REG (r27, 27),
+ DECLARE_REG (r28, 28),
+ DECLARE_REG (r29, 29),
+ DECLARE_REG (r30, 30),
+ DECLARE_REG (r31, 31),
+
+ /* Alternative names for special registers. */
+ DECLARE_REG (r2, 2),
+ DECLARE_REG (r3, 3),
+ DECLARE_REG (r4, 4)
+};
+
+#define PRU_NUM_REGS \
+ ((sizeof pru_regs) / (sizeof (pru_regs[0])))
+const int pru_num_regs = PRU_NUM_REGS;
+
+#undef PRU_NUM_REGS
+
+/* This is the opcode table used by the PRU GNU as, disassembler
+ and soon GDB. */
+const struct pru_opcode pru_opcodes[] =
+{
+ /* { name, args,
+ match, mask, pinfo, overflow_msg } */
+#define DECLARE_FORMAT1_OPCODE(str, subop) \
+ { #str, prui_ ## str, "d,s,b", \
+ OP_MATCH_ ## subop, OP_MASK_FMT1_OP | OP_MASK_SUBOP, 0, \
+ unsigned_immed8_overflow }
+
+ DECLARE_FORMAT1_OPCODE (add, ADD),
+ DECLARE_FORMAT1_OPCODE (adc, ADC),
+ DECLARE_FORMAT1_OPCODE (sub, SUB),
+ DECLARE_FORMAT1_OPCODE (suc, SUC),
+ DECLARE_FORMAT1_OPCODE (lsl, LSL),
+ DECLARE_FORMAT1_OPCODE (lsr, LSR),
+ DECLARE_FORMAT1_OPCODE (rsb, RSB),
+ DECLARE_FORMAT1_OPCODE (rsc, RSC),
+ DECLARE_FORMAT1_OPCODE (and, AND),
+ DECLARE_FORMAT1_OPCODE (or, OR),
+ DECLARE_FORMAT1_OPCODE (xor, XOR),
+ DECLARE_FORMAT1_OPCODE (min, MIN),
+ DECLARE_FORMAT1_OPCODE (max, MAX),
+ DECLARE_FORMAT1_OPCODE (clr, CLR),
+ DECLARE_FORMAT1_OPCODE (set, SET),
+
+ { "not", prui_not, "d,s",
+ OP_MATCH_NOT | OP_MASK_IO,
+ OP_MASK_FMT1_OP | OP_MASK_SUBOP | OP_MASK_IO, 0, no_overflow},
+
+ { "jmp", prui_jmp, "j",
+ OP_MATCH_JMP, OP_MASK_FMT2_OP | OP_MASK_SUBOP, 0, unsigned_immed16_overflow},
+ { "jal", prui_jal, "d,j",
+ OP_MATCH_JAL, OP_MASK_FMT2_OP | OP_MASK_SUBOP, 0, unsigned_immed16_overflow},
+ { "ldi", prui_ldi, "d,W",
+ OP_MATCH_LDI, OP_MASK_FMT2_OP | OP_MASK_SUBOP, 0, unsigned_immed16_overflow},
+ { "halt", prui_halt, "",
+ OP_MATCH_HALT, OP_MASK_FMT2_OP | OP_MASK_SUBOP, 0, no_overflow},
+ { "slp", prui_slp, "w",
+ OP_MATCH_SLP, OP_MASK_FMT2_OP | OP_MASK_SUBOP, 0, no_overflow},
+
+ { "xin", prui_xin, "x,D,n",
+ OP_MATCH_XIN, OP_MASK_XFR_OP, 0, unsigned_immed8_overflow},
+ { "xout", prui_xout, "x,D,n",
+ OP_MATCH_XOUT, OP_MASK_XFR_OP, 0, unsigned_immed8_overflow},
+ { "xchg", prui_xchg, "x,D,n",
+ OP_MATCH_XCHG, OP_MASK_XFR_OP, 0, unsigned_immed8_overflow},
+ { "sxin", prui_sxin, "x,D,n",
+ OP_MATCH_SXIN, OP_MASK_XFR_OP, 0, unsigned_immed8_overflow},
+ { "sxout", prui_sxout, "x,D,n",
+ OP_MATCH_SXOUT, OP_MASK_XFR_OP, 0, unsigned_immed8_overflow},
+ { "sxchg", prui_sxchg, "x,D,n",
+ OP_MATCH_SXCHG, OP_MASK_XFR_OP, 0, unsigned_immed8_overflow},
+
+ { "loop", prui_loop, "O,B",
+ OP_MATCH_LOOP, OP_MASK_LOOP_OP, 0, unsigned_immed8_overflow},
+ { "iloop", prui_loop, "O,B",
+ OP_MATCH_ILOOP, OP_MASK_LOOP_OP, 0, unsigned_immed8_overflow},
+
+ { "qbgt", prui_qbgt, "o,s,b",
+ OP_MATCH_QBGT, OP_MASK_FMT4_OP | OP_MASK_CMP, 0, qbranch_target_overflow},
+ { "qbge", prui_qbge, "o,s,b",
+ OP_MATCH_QBGE, OP_MASK_FMT4_OP | OP_MASK_CMP, 0, qbranch_target_overflow},
+ { "qblt", prui_qblt, "o,s,b",
+ OP_MATCH_QBLT, OP_MASK_FMT4_OP | OP_MASK_CMP, 0, qbranch_target_overflow},
+ { "qble", prui_qble, "o,s,b",
+ OP_MATCH_QBLE, OP_MASK_FMT4_OP | OP_MASK_CMP, 0, qbranch_target_overflow},
+ { "qbeq", prui_qbeq, "o,s,b",
+ OP_MATCH_QBEQ, OP_MASK_FMT4_OP | OP_MASK_CMP, 0, qbranch_target_overflow},
+ { "qbne", prui_qbne, "o,s,b",
+ OP_MATCH_QBNE, OP_MASK_FMT4_OP | OP_MASK_CMP, 0, qbranch_target_overflow},
+ { "qba", prui_qba, "o",
+ OP_MATCH_QBA, OP_MASK_FMT4_OP | OP_MASK_CMP, 0, qbranch_target_overflow},
+
+ { "qbbs", prui_qbbs, "o,s,b",
+ OP_MATCH_QBBS, OP_MASK_FMT5_OP | OP_MASK_BCMP, 0, qbranch_target_overflow},
+ { "qbbc", prui_qbbc, "o,s,b",
+ OP_MATCH_QBBC, OP_MASK_FMT5_OP | OP_MASK_BCMP, 0, qbranch_target_overflow},
+
+ { "lbbo", prui_lbbo, "D,S,b,l",
+ OP_MATCH_LBBO, OP_MASK_FMT6AB_OP | OP_MASK_LOADSTORE, 0,
+ unsigned_immed8_overflow},
+ { "sbbo", prui_sbbo, "D,S,b,l",
+ OP_MATCH_SBBO, OP_MASK_FMT6AB_OP | OP_MASK_LOADSTORE, 0,
+ unsigned_immed8_overflow},
+ { "lbco", prui_lbco, "D,c,b,l",
+ OP_MATCH_LBCO, OP_MASK_FMT6CD_OP | OP_MASK_LOADSTORE, 0,
+ unsigned_immed8_overflow},
+ { "sbco", prui_sbco, "D,c,b,l",
+ OP_MATCH_SBCO, OP_MASK_FMT6CD_OP | OP_MASK_LOADSTORE, 0,
+ unsigned_immed8_overflow},
+
+ /* Fill in the default values for the real-instruction arguments.
+ The assembler will not do it! */
+ { "nop", prui_or, "",
+ OP_MATCH_OR
+ | (RSEL_31_0 << OP_SH_RS2SEL) | (0 << OP_SH_RS2)
+ | (RSEL_31_0 << OP_SH_RS1SEL) | (0 << OP_SH_RS1)
+ | (RSEL_31_0 << OP_SH_RDSEL) | (0 << OP_SH_RD),
+ OP_MASK_FMT1_OP | OP_MASK_SUBOP
+ | OP_MASK_RS2SEL | OP_MASK_RS2 | OP_MASK_RS1SEL | OP_MASK_RS1
+ | OP_MASK_RDSEL | OP_MASK_RD | OP_MASK_IO,
+ PRU_INSN_MACRO, no_overflow},
+ { "mov", prui_or, "d,s",
+ OP_MATCH_OR | (0 << OP_SH_IMM8) | OP_MASK_IO,
+ OP_MASK_FMT1_OP | OP_MASK_SUBOP | OP_MASK_IMM8 | OP_MASK_IO,
+ PRU_INSN_MACRO, no_overflow},
+ { "ret", prui_jmp, "",
+ OP_MATCH_JMP
+ | (RSEL_31_16 << OP_SH_RS2SEL) | (3 << OP_SH_RS2),
+ OP_MASK_FMT2_OP | OP_MASK_SUBOP
+ | OP_MASK_RS2SEL | OP_MASK_RS2 | OP_MASK_IO,
+ PRU_INSN_MACRO, unsigned_immed16_overflow},
+ { "call", prui_jal, "j",
+ OP_MATCH_JAL
+ | (RSEL_31_16 << OP_SH_RDSEL) | (3 << OP_SH_RD),
+ OP_MASK_FMT2_OP | OP_MASK_SUBOP
+ | OP_MASK_RDSEL | OP_MASK_RD,
+ PRU_INSN_MACRO, unsigned_immed16_overflow},
+
+ { "wbc", prui_qbbs, "s,b",
+ OP_MATCH_QBBS | (0 << OP_SH_BROFF98) | (0 << OP_SH_BROFF70),
+ OP_MASK_FMT5_OP | OP_MASK_BCMP | OP_MASK_BROFF,
+ PRU_INSN_MACRO, qbranch_target_overflow},
+ { "wbs", prui_qbbc, "s,b",
+ OP_MATCH_QBBC | (0 << OP_SH_BROFF98) | (0 << OP_SH_BROFF70),
+ OP_MASK_FMT5_OP | OP_MASK_BCMP | OP_MASK_BROFF,
+ PRU_INSN_MACRO, qbranch_target_overflow},
+
+ { "fill", prui_xin, "D,n",
+ OP_MATCH_XIN | (254 << OP_SH_XFR_WBA),
+ OP_MASK_XFR_OP | OP_MASK_XFR_WBA,
+ PRU_INSN_MACRO, unsigned_immed8_overflow},
+ { "zero", prui_xin, "D,n",
+ OP_MATCH_XIN | (255 << OP_SH_XFR_WBA),
+ OP_MASK_XFR_OP | OP_MASK_XFR_WBA,
+ PRU_INSN_MACRO, unsigned_immed8_overflow},
+
+ { "ldi32", prui_ldi, "R,i",
+ OP_MATCH_LDI, OP_MASK_FMT2_OP | OP_MASK_SUBOP,
+ PRU_INSN_LDI32, unsigned_immed32_overflow},
+};
+
+#define PRU_NUM_OPCODES \
+ ((sizeof pru_opcodes) / (sizeof (pru_opcodes[0])))
+const int bfd_pru_num_opcodes = PRU_NUM_OPCODES;
+
+#undef PRU_NUM_OPCODES
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