/* Disassembly routines for TMS320C30 architecture
- Copyright (C) 1998, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1998-2020 Free Software Foundation, Inc.
Contributed by Steven Haworth (steve@pm.cse.rmit.edu.au)
- This program is free software; you can redistribute it and/or modify
+ 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 2 of the License, or
- (at your option) any later version.
+ the Free Software Foundation; either version 3, 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.
+ 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 program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ 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 <errno.h>
#include <math.h>
-#include "sysdep.h"
-#include "dis-asm.h"
+#include "disassemble.h"
#include "opcode/tic30.h"
#define NORMAL_INSN 1
#define PARALLEL_INSN 2
/* Gets the type of instruction based on the top 2 or 3 bits of the
- instruction word. */
+ instruction word. */
#define GET_TYPE(insn) (insn & 0x80000000 ? insn & 0xC0000000 : insn & 0xE0000000)
-/* Instruction types. */
+/* Instruction types. */
#define TWO_OPERAND_1 0x00000000
#define TWO_OPERAND_2 0x40000000
#define THREE_OPERAND 0x20000000
#define MUL_ADDS 0x80000000
#define BRANCHES 0x60000000
-/* Specific instruction id bits. */
+/* Specific instruction id bits. */
#define NORMAL_IDEN 0x1F800000
#define PAR_STORE_IDEN 0x3E000000
#define MUL_ADD_IDEN 0x2C000000
#define BR_IMM_IDEN 0x1F000000
#define BR_COND_IDEN 0x1C3F0000
-/* Addressing modes. */
+/* Addressing modes. */
#define AM_REGISTER 0x00000000
#define AM_DIRECT 0x00200000
#define AM_INDIRECT 0x00400000
#define REG_AR0 0x08
#define LDP_INSN 0x08700000
-/* TMS320C30 program counter for current instruction. */
+/* TMS320C30 program counter for current instruction. */
static unsigned int _pc;
struct instruction
- {
- int type;
- template *tm;
- partemplate *ptm;
- };
-
-int get_tic30_instruction PARAMS ((unsigned long, struct instruction *));
-int print_two_operand
- PARAMS ((disassemble_info *, unsigned long, struct instruction *));
-int print_three_operand
- PARAMS ((disassemble_info *, unsigned long, struct instruction *));
-int print_par_insn
- PARAMS ((disassemble_info *, unsigned long, struct instruction *));
-int print_branch
- PARAMS ((disassemble_info *, unsigned long, struct instruction *));
-int get_indirect_operand PARAMS ((unsigned short, int, char *));
-int get_register_operand PARAMS ((unsigned char, char *));
-int cnvt_tmsfloat_ieee PARAMS ((unsigned long, int, float *));
-
-int
-print_insn_tic30 (pc, info)
- bfd_vma pc;
- disassemble_info *info;
{
- unsigned long insn_word;
- struct instruction insn =
- {0, NULL, NULL};
- bfd_vma bufaddr = pc - info->buffer_vma;
- /* Obtain the current instruction word from the buffer. */
- insn_word = (*(info->buffer + bufaddr) << 24) | (*(info->buffer + bufaddr + 1) << 16) |
- (*(info->buffer + bufaddr + 2) << 8) | *(info->buffer + bufaddr + 3);
- _pc = pc / 4;
- /* Get the instruction refered to by the current instruction word
- and print it out based on its type. */
- if (!get_tic30_instruction (insn_word, &insn))
- return -1;
- switch (GET_TYPE (insn_word))
- {
- case TWO_OPERAND_1:
- case TWO_OPERAND_2:
- if (!print_two_operand (info, insn_word, &insn))
- return -1;
- break;
- case THREE_OPERAND:
- if (!print_three_operand (info, insn_word, &insn))
- return -1;
- break;
- case PAR_STORE:
- case MUL_ADDS:
- if (!print_par_insn (info, insn_word, &insn))
- return -1;
- break;
- case BRANCHES:
- if (!print_branch (info, insn_word, &insn))
- return -1;
- break;
- }
- return 4;
-}
+ int type;
+ insn_template *tm;
+ partemplate *ptm;
+};
-int
-get_tic30_instruction (insn_word, insn)
- unsigned long insn_word;
- struct instruction *insn;
+static int
+get_tic30_instruction (unsigned long insn_word, struct instruction *insn)
{
switch (GET_TYPE (insn_word))
{
case THREE_OPERAND:
insn->type = NORMAL_INSN;
{
- template *current_optab = (template *) tic30_optab;
+ insn_template *current_optab = (insn_template *) tic30_optab;
+
for (; current_optab < tic30_optab_end; current_optab++)
{
if (GET_TYPE (current_optab->base_opcode) == GET_TYPE (insn_word))
}
}
break;
+
case PAR_STORE:
insn->type = PARALLEL_INSN;
{
partemplate *current_optab = (partemplate *) tic30_paroptab;
+
for (; current_optab < tic30_paroptab_end; current_optab++)
{
if (GET_TYPE (current_optab->base_opcode) == GET_TYPE (insn_word))
{
- if ((current_optab->base_opcode & PAR_STORE_IDEN) == (insn_word & PAR_STORE_IDEN))
+ if ((current_optab->base_opcode & PAR_STORE_IDEN)
+ == (insn_word & PAR_STORE_IDEN))
{
insn->ptm = current_optab;
break;
}
}
break;
+
case MUL_ADDS:
insn->type = PARALLEL_INSN;
{
partemplate *current_optab = (partemplate *) tic30_paroptab;
+
for (; current_optab < tic30_paroptab_end; current_optab++)
{
if (GET_TYPE (current_optab->base_opcode) == GET_TYPE (insn_word))
{
- if ((current_optab->base_opcode & MUL_ADD_IDEN) == (insn_word & MUL_ADD_IDEN))
+ if ((current_optab->base_opcode & MUL_ADD_IDEN)
+ == (insn_word & MUL_ADD_IDEN))
{
insn->ptm = current_optab;
break;
}
}
break;
+
case BRANCHES:
insn->type = NORMAL_INSN;
{
- template *current_optab = (template *) tic30_optab;
+ insn_template *current_optab = (insn_template *) tic30_optab;
+
for (; current_optab < tic30_optab_end; current_optab++)
{
if (GET_TYPE (current_optab->base_opcode) == GET_TYPE (insn_word))
{
if (current_optab->operand_types[0] & Imm24)
{
- if ((current_optab->base_opcode & BR_IMM_IDEN) == (insn_word & BR_IMM_IDEN))
+ if ((current_optab->base_opcode & BR_IMM_IDEN)
+ == (insn_word & BR_IMM_IDEN))
{
insn->tm = current_optab;
break;
}
else if (current_optab->operands > 0)
{
- if ((current_optab->base_opcode & BR_COND_IDEN) == (insn_word & BR_COND_IDEN))
+ if ((current_optab->base_opcode & BR_COND_IDEN)
+ == (insn_word & BR_COND_IDEN))
{
insn->tm = current_optab;
break;
}
else
{
- if ((current_optab->base_opcode & (BR_COND_IDEN | 0x00800000)) == (insn_word & (BR_COND_IDEN | 0x00800000)))
+ if ((current_optab->base_opcode & (BR_COND_IDEN | 0x00800000))
+ == (insn_word & (BR_COND_IDEN | 0x00800000)))
{
insn->tm = current_optab;
break;
return 1;
}
-int
-print_two_operand (info, insn_word, insn)
- disassemble_info *info;
- unsigned long insn_word;
- struct instruction *insn;
+#define OPERAND_BUFFER_LEN 15
+
+static int
+get_register_operand (unsigned char fragment, char *buffer)
+{
+ const reg *current_reg = tic30_regtab;
+
+ if (buffer == NULL)
+ return 0;
+ for (; current_reg < tic30_regtab_end; current_reg++)
+ {
+ if ((fragment & 0x1F) == current_reg->opcode)
+ {
+ strncpy (buffer, current_reg->name, OPERAND_BUFFER_LEN);
+ buffer[OPERAND_BUFFER_LEN - 1] = 0;
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int
+get_indirect_operand (unsigned short fragment,
+ int size,
+ char *buffer)
+{
+ unsigned char mod;
+ unsigned arnum;
+ unsigned char disp;
+
+ if (buffer == NULL)
+ return 0;
+ /* Determine which bits identify the sections of the indirect
+ operand based on the size in bytes. */
+ switch (size)
+ {
+ case 1:
+ mod = (fragment & 0x00F8) >> 3;
+ arnum = (fragment & 0x0007);
+ disp = 0;
+ break;
+ case 2:
+ mod = (fragment & 0xF800) >> 11;
+ arnum = (fragment & 0x0700) >> 8;
+ disp = (fragment & 0x00FF);
+ break;
+ default:
+ return 0;
+ }
+ {
+ const ind_addr_type *current_ind = tic30_indaddr_tab;
+
+ for (; current_ind < tic30_indaddrtab_end; current_ind++)
+ {
+ if (current_ind->modfield == mod)
+ {
+ if (current_ind->displacement == IMPLIED_DISP && size == 2)
+ continue;
+
+ else
+ {
+ size_t i, len;
+ int bufcnt;
+
+ len = strlen (current_ind->syntax);
+
+ for (i = 0, bufcnt = 0; i < len; i++, bufcnt++)
+ {
+ buffer[bufcnt] = current_ind->syntax[i];
+
+ if (bufcnt > 0
+ && bufcnt < OPERAND_BUFFER_LEN - 1
+ && buffer[bufcnt - 1] == 'a'
+ && buffer[bufcnt] == 'r')
+ buffer[++bufcnt] = arnum + '0';
+
+ if (bufcnt < OPERAND_BUFFER_LEN - 1
+ && buffer[bufcnt] == '('
+ && current_ind->displacement == DISP_REQUIRED)
+ {
+ snprintf (buffer + (bufcnt + 1),
+ OPERAND_BUFFER_LEN - (bufcnt + 1),
+ "%u", disp);
+ bufcnt += strlen (buffer + (bufcnt + 1));
+ }
+ }
+ buffer[bufcnt + 1] = '\0';
+ break;
+ }
+ }
+ }
+ }
+ return 1;
+}
+
+static int
+cnvt_tmsfloat_ieee (unsigned long tmsfloat, int size, float *ieeefloat)
+{
+ unsigned long exponent, sign, mant;
+ union
+ {
+ unsigned long l;
+ float f;
+ } val;
+
+ if (size == 2)
+ {
+ if ((tmsfloat & 0x0000F000) == 0x00008000)
+ tmsfloat = 0x80000000;
+ else
+ {
+ tmsfloat <<= 16;
+ tmsfloat = (long) tmsfloat >> 4;
+ }
+ }
+ exponent = tmsfloat & 0xFF000000;
+ if (exponent == 0x80000000)
+ {
+ *ieeefloat = 0.0;
+ return 1;
+ }
+ exponent += 0x7F000000;
+ sign = (tmsfloat & 0x00800000) << 8;
+ mant = tmsfloat & 0x007FFFFF;
+ if (exponent == 0xFF000000)
+ {
+ if (mant == 0)
+ *ieeefloat = ERANGE;
+#ifdef HUGE_VALF
+ if (sign == 0)
+ *ieeefloat = HUGE_VALF;
+ else
+ *ieeefloat = -HUGE_VALF;
+#else
+ if (sign == 0)
+ *ieeefloat = 1.0 / 0.0;
+ else
+ *ieeefloat = -1.0 / 0.0;
+#endif
+ return 1;
+ }
+ exponent >>= 1;
+ if (sign)
+ {
+ mant = (~mant) & 0x007FFFFF;
+ mant += 1;
+ exponent += mant & 0x00800000;
+ exponent &= 0x7F800000;
+ mant &= 0x007FFFFF;
+ }
+ if (tmsfloat == 0x80000000)
+ sign = mant = exponent = 0;
+ tmsfloat = sign | exponent | mant;
+ val.l = tmsfloat;
+ *ieeefloat = val.f;
+ return 1;
+}
+
+static int
+print_two_operand (disassemble_info *info,
+ unsigned long insn_word,
+ struct instruction *insn)
{
char name[12];
- char operand[2][13] =
+ char operand[2][OPERAND_BUFFER_LEN] =
{
{0},
- {0}};
+ {0}
+ };
float f_number;
if (insn->tm == NULL)
if (insn->tm->opcode_modifier == AddressMode)
{
int src_op, dest_op;
- /* Determine whether instruction is a store or a normal instruction. */
- if ((insn->tm->operand_types[1] & (Direct | Indirect)) == (Direct | Indirect))
+ /* Determine whether instruction is a store or a normal instruction. */
+ if ((insn->tm->operand_types[1] & (Direct | Indirect))
+ == (Direct | Indirect))
{
src_op = 1;
dest_op = 0;
src_op = 0;
dest_op = 1;
}
- /* Get the destination register. */
+ /* Get the destination register. */
if (insn->tm->operands == 2)
get_register_operand ((insn_word & 0x001F0000) >> 16, operand[dest_op]);
- /* Get the source operand based on addressing mode. */
+ /* Get the source operand based on addressing mode. */
switch (insn_word & AddressMode)
{
case AM_REGISTER:
- /* Check for the NOP instruction before getting the operand. */
+ /* Check for the NOP instruction before getting the operand. */
if ((insn->tm->operand_types[0] & NotReq) == 0)
get_register_operand ((insn_word & 0x0000001F), operand[src_op]);
break;
get_indirect_operand ((insn_word & 0x0000FFFF), 2, operand[src_op]);
break;
case AM_IMM:
- /* Get the value of the immediate operand based on variable type. */
+ /* Get the value of the immediate operand based on variable type. */
switch (insn->tm->imm_arg_type)
{
case Imm_Float:
default:
return 0;
}
- /* Handle special case for LDP instruction. */
+ /* Handle special case for LDP instruction. */
if ((insn_word & 0xFFFFFF00) == LDP_INSN)
{
strcpy (name, "ldp");
}
}
}
- /* Handle case for stack and rotate instructions. */
+ /* Handle case for stack and rotate instructions. */
else if (insn->tm->operands == 1)
{
if (insn->tm->opcode_modifier == StackOp)
- {
- get_register_operand ((insn_word & 0x001F0000) >> 16, operand[0]);
- }
+ get_register_operand ((insn_word & 0x001F0000) >> 16, operand[0]);
}
- /* Output instruction to stream. */
+ /* Output instruction to stream. */
info->fprintf_func (info->stream, " %s %s%c%s", name,
operand[0][0] ? operand[0] : "",
operand[1][0] ? ',' : ' ',
return 1;
}
-int
-print_three_operand (info, insn_word, insn)
- disassemble_info *info;
- unsigned long insn_word;
- struct instruction *insn;
+static int
+print_three_operand (disassemble_info *info,
+ unsigned long insn_word,
+ struct instruction *insn)
{
- char operand[3][13] =
+ char operand[3][OPERAND_BUFFER_LEN] =
{
{0},
{0},
- {0}};
+ {0}
+ };
if (insn->tm == NULL)
return 0;
return 1;
}
-int
-print_par_insn (info, insn_word, insn)
- disassemble_info *info;
- unsigned long insn_word;
- struct instruction *insn;
+static int
+print_par_insn (disassemble_info *info,
+ unsigned long insn_word,
+ struct instruction *insn)
{
size_t i, len;
char *name1, *name2;
- char operand[2][3][13] =
+ char operand[2][3][OPERAND_BUFFER_LEN] =
{
{
{0},
{0},
- {0}},
+ {0}
+ },
{
{0},
{0},
- {0}}};
+ {0}
+ }
+ };
if (insn->ptm == NULL)
return 0;
/* Parse out the names of each of the parallel instructions from the
- q_insn1_insn2 format. */
+ q_insn1_insn2 format. */
name1 = (char *) strdup (insn->ptm->name + 2);
name2 = "";
len = strlen (name1);
break;
}
}
- /* Get the operands of the instruction based on the operand order. */
+ /* Get the operands of the instruction based on the operand order. */
switch (insn->ptm->oporder)
{
case OO_4op1:
return 1;
}
-int
-print_branch (info, insn_word, insn)
- disassemble_info *info;
- unsigned long insn_word;
- struct instruction *insn;
+static int
+print_branch (disassemble_info *info,
+ unsigned long insn_word,
+ struct instruction *insn)
{
- char operand[2][13] =
+ char operand[2][OPERAND_BUFFER_LEN] =
{
{0},
- {0}};
+ {0}
+ };
unsigned long address;
int print_label = 0;
if (insn->tm == NULL)
return 0;
- /* Get the operands for 24-bit immediate jumps. */
+ /* Get the operands for 24-bit immediate jumps. */
if (insn->tm->operand_types[0] & Imm24)
{
address = insn_word & 0x00FFFFFF;
sprintf (operand[0], "0x%lX", address);
print_label = 1;
}
- /* Get the operand for the trap instruction. */
+ /* Get the operand for the trap instruction. */
else if (insn->tm->operand_types[0] & IVector)
{
address = insn_word & 0x0000001F;
else
{
address = insn_word & 0x0000FFFF;
- /* Get the operands for the DB instructions. */
+ /* Get the operands for the DB instructions. */
if (insn->tm->operands == 2)
{
get_register_operand (((insn_word & 0x01C00000) >> 22) + REG_AR0, operand[0]);
else
get_register_operand (insn_word & 0x0000001F, operand[1]);
}
- /* Get the operands for the standard branches. */
+ /* Get the operands for the standard branches. */
else if (insn->tm->operands == 1)
{
if (insn_word & PCRel)
operand[0][0] ? operand[0] : "",
operand[1][0] ? ',' : ' ',
operand[1][0] ? operand[1] : "");
- /* Print destination of branch in relation to current symbol. */
+ /* Print destination of branch in relation to current symbol. */
if (print_label && info->symbols)
{
asymbol *sym = *info->symbols;
if ((insn->tm->opcode_modifier == PCRel) && (insn_word & PCRel))
{
address = (_pc + 1 + (short) address) - ((sym->section->vma + sym->value) / 4);
- /* Check for delayed instruction, if so adjust destination. */
+ /* Check for delayed instruction, if so adjust destination. */
if (insn_word & 0x00200000)
address += 2;
}
if (address == 0)
info->fprintf_func (info->stream, " <%s>", sym->name);
else
- info->fprintf_func (info->stream, " <%s %c %d>", sym->name,
+ info->fprintf_func (info->stream, " <%s %c %lu>", sym->name,
((short) address < 0) ? '-' : '+',
- abs (address));
+ address);
}
return 1;
}
int
-get_indirect_operand (fragment, size, buffer)
- unsigned short fragment;
- int size;
- char *buffer;
+print_insn_tic30 (bfd_vma pc, disassemble_info *info)
{
- unsigned char mod;
- unsigned arnum;
- unsigned char disp;
+ unsigned long insn_word;
+ struct instruction insn = { 0, NULL, NULL };
+ bfd_vma bufaddr = pc - info->buffer_vma;
- if (buffer == NULL)
- return 0;
- /* Determine which bits identify the sections of the indirect operand based on the
- size in bytes. */
- switch (size)
+ /* Obtain the current instruction word from the buffer. */
+ insn_word = (((unsigned) *(info->buffer + bufaddr) << 24)
+ | (*(info->buffer + bufaddr + 1) << 16)
+ | (*(info->buffer + bufaddr + 2) << 8)
+ | *(info->buffer + bufaddr + 3));
+ _pc = pc / 4;
+ /* Get the instruction refered to by the current instruction word
+ and print it out based on its type. */
+ if (!get_tic30_instruction (insn_word, &insn))
+ return -1;
+ switch (GET_TYPE (insn_word))
{
- case 1:
- mod = (fragment & 0x00F8) >> 3;
- arnum = (fragment & 0x0007);
- disp = 0;
+ case TWO_OPERAND_1:
+ case TWO_OPERAND_2:
+ if (!print_two_operand (info, insn_word, &insn))
+ return -1;
break;
- case 2:
- mod = (fragment & 0xF800) >> 11;
- arnum = (fragment & 0x0700) >> 8;
- disp = (fragment & 0x00FF);
+ case THREE_OPERAND:
+ if (!print_three_operand (info, insn_word, &insn))
+ return -1;
+ break;
+ case PAR_STORE:
+ case MUL_ADDS:
+ if (!print_par_insn (info, insn_word, &insn))
+ return -1;
+ break;
+ case BRANCHES:
+ if (!print_branch (info, insn_word, &insn))
+ return -1;
break;
- default:
- return 0;
- }
- {
- const ind_addr_type *current_ind = tic30_indaddr_tab;
- for (; current_ind < tic30_indaddrtab_end; current_ind++)
- {
- if (current_ind->modfield == mod)
- {
- if (current_ind->displacement == IMPLIED_DISP && size == 2)
- {
- continue;
- }
- else
- {
- size_t i, len;
- int bufcnt;
-
- len = strlen (current_ind->syntax);
- for (i = 0, bufcnt = 0; i < len; i++, bufcnt++)
- {
- buffer[bufcnt] = current_ind->syntax[i];
- if (buffer[bufcnt - 1] == 'a' && buffer[bufcnt] == 'r')
- buffer[++bufcnt] = arnum + '0';
- if (buffer[bufcnt] == '(' && current_ind->displacement == DISP_REQUIRED)
- {
- sprintf (&buffer[bufcnt + 1], "%u", disp);
- bufcnt += strlen (&buffer[bufcnt + 1]);
- }
- }
- buffer[bufcnt + 1] = '\0';
- break;
- }
- }
- }
- }
- return 1;
-}
-
-int
-get_register_operand (fragment, buffer)
- unsigned char fragment;
- char *buffer;
-{
- const reg *current_reg = tic30_regtab;
-
- if (buffer == NULL)
- return 0;
- for (; current_reg < tic30_regtab_end; current_reg++)
- {
- if ((fragment & 0x1F) == current_reg->opcode)
- {
- strcpy (buffer, current_reg->name);
- return 1;
- }
- }
- return 0;
-}
-
-int
-cnvt_tmsfloat_ieee (tmsfloat, size, ieeefloat)
- unsigned long tmsfloat;
- int size;
- float *ieeefloat;
-{
- unsigned long exp, sign, mant;
-
- if (size == 2)
- {
- if ((tmsfloat & 0x0000F000) == 0x00008000)
- tmsfloat = 0x80000000;
- else
- {
- tmsfloat <<= 16;
- tmsfloat = (long) tmsfloat >> 4;
- }
- }
- exp = tmsfloat & 0xFF000000;
- if (exp == 0x80000000)
- {
- *ieeefloat = 0.0;
- return 1;
- }
- exp += 0x7F000000;
- sign = (tmsfloat & 0x00800000) << 8;
- mant = tmsfloat & 0x007FFFFF;
- if (exp == 0xFF000000)
- {
- if (mant == 0)
- *ieeefloat = ERANGE;
- if (sign == 0)
- *ieeefloat = 1.0 / 0.0;
- else
- *ieeefloat = -1.0 / 0.0;
- return 1;
- }
- exp >>= 1;
- if (sign)
- {
- mant = (~mant) & 0x007FFFFF;
- mant += 1;
- exp += mant & 0x00800000;
- exp &= 0x7F800000;
- mant &= 0x007FFFFF;
}
- if (tmsfloat == 0x80000000)
- sign = mant = exp = 0;
- tmsfloat = sign | exp | mant;
- *ieeefloat = *((float *) &tmsfloat);
- return 1;
+ return 4;
}
projects / deliverable / binutils-gdb.git / blobdiff