mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-11-29 15:00:34 +00:00
427 lines
12 KiB
C
427 lines
12 KiB
C
/* Assemble V850 instructions.
|
||
Copyright (C) 1996 Free Software Foundation, Inc.
|
||
|
||
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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
||
|
||
#include "ansidecl.h"
|
||
#include "opcode/v850.h"
|
||
|
||
/* Local insertion and extraction functions. */
|
||
static unsigned long insert_d9 PARAMS ((unsigned long, long, const char **));
|
||
static long extract_d9 PARAMS ((unsigned long, int *));
|
||
static unsigned long insert_d22 PARAMS ((unsigned long, long, const char **));
|
||
static long extract_d22 PARAMS ((unsigned long, int *));
|
||
static unsigned long insert_d16_15 PARAMS ((unsigned long, long,
|
||
const char **));
|
||
static long extract_d16_15 PARAMS ((unsigned long, int *));
|
||
static unsigned long insert_d8_7 PARAMS ((unsigned long, long, const char **));
|
||
static long extract_d8_7 PARAMS ((unsigned long, int *));
|
||
static unsigned long insert_d8_6 PARAMS ((unsigned long, long, const char **));
|
||
static long extract_d8_6 PARAMS ((unsigned long, int *));
|
||
|
||
/* regular opcode */
|
||
#define OP(x) ((x & 0x3f) << 5)
|
||
#define OP_MASK OP(0x3f)
|
||
|
||
/* conditional branch opcode */
|
||
#define BOP(x) ((0x0b << 7) | (x & 0x0f))
|
||
#define BOP_MASK ((0x0f << 7) | 0x0f)
|
||
|
||
/* one-word opcodes */
|
||
#define one(x) ((unsigned int) (x))
|
||
|
||
/* two-word opcodes */
|
||
#define two(x,y) ((unsigned int) (x) | ((unsigned int) (y) << 16))
|
||
|
||
|
||
|
||
const struct v850_operand v850_operands[] = {
|
||
#define UNUSED 0
|
||
{ 0, 0, 0, 0, 0 },
|
||
|
||
/* The R1 field in a format 1, 6, 7, or 9 insn. */
|
||
#define R1 (UNUSED+1)
|
||
{ 5, 0, 0, 0, V850_OPERAND_REG },
|
||
|
||
/* The R2 field in a format 1, 2, 4, 5, 6, 7, 9 insn. */
|
||
#define R2 (R1+1)
|
||
{ 5, 11, 0, 0, V850_OPERAND_REG },
|
||
|
||
/* The IMM5 field in a format 2 insn. */
|
||
#define I5 (R2+1)
|
||
{ 5, 0, 0, 0, V850_OPERAND_SIGNED },
|
||
|
||
#define I5U (I5+1)
|
||
{ 5, 0, 0, 0, 0 },
|
||
|
||
/* The IMM16 field in a format 6 insn. */
|
||
#define I16 (I5U+1)
|
||
{ 16, 16, 0, 0, V850_OPERAND_SIGNED },
|
||
|
||
/* The signed DISP7 field in a format 4 insn. */
|
||
#define D7 (I16+1)
|
||
{ 7, 0, 0, 0, 0},
|
||
|
||
/* The DISP9 field in a format 3 insn. */
|
||
#define D9 (D7+1)
|
||
{ 9, 0, insert_d9, extract_d9, V850_OPERAND_SIGNED | V850_OPERAND_DISP },
|
||
|
||
/* The DISP16 field in a format 6 insn. */
|
||
#define D16_15 (D9+1)
|
||
{ 16, 16, insert_d16_15, extract_d16_15, V850_OPERAND_SIGNED },
|
||
|
||
/* The DISP22 field in a format 4 insn. */
|
||
#define D22 (D16_15+1)
|
||
{ 22, 0, insert_d22, extract_d22, V850_OPERAND_SIGNED | V850_OPERAND_DISP },
|
||
|
||
#define B3 (D22+1)
|
||
/* The 3 bit immediate field in format 8 insn. */
|
||
{ 3, 11, 0, 0, 0 },
|
||
|
||
#define CCCC (B3+1)
|
||
/* The 4 bit condition code in a setf instruction */
|
||
{ 4, 0, 0, 0, V850_OPERAND_CC },
|
||
|
||
/* The unsigned DISP8_7 field in a format 4 insn. */
|
||
#define D8_7 (CCCC+1)
|
||
{ 8, 0, insert_d8_7, extract_d8_7, 0 },
|
||
|
||
/* The unsigned DISP8_6 field in a format 4 insn. */
|
||
#define D8_6 (D8_7+1)
|
||
{ 8, 0, insert_d8_6, extract_d8_6, 0 },
|
||
|
||
/* System register operands. */
|
||
#define SR1 (D8_6+1)
|
||
{ 5, 0, 0, 0, V850_OPERAND_SRG },
|
||
|
||
/* EP Register. */
|
||
#define EP (SR1+1)
|
||
{ 0, 0, 0, 0, V850_OPERAND_EP },
|
||
|
||
/* The IMM16 field (unsigned0 in a format 6 insn. */
|
||
#define I16U (EP+1)
|
||
{ 16, 16, 0, 0, 0},
|
||
|
||
/* The R2 field as a system register. */
|
||
#define SR2 (I16U+1)
|
||
{ 5, 11, 0, 0, V850_OPERAND_SRG },
|
||
|
||
/* The DISP16 field in a format 8 insn. */
|
||
#define D16 (SR2+1)
|
||
{ 16, 16, 0, 0, V850_OPERAND_SIGNED },
|
||
|
||
} ;
|
||
|
||
|
||
/* reg-reg instruction format (Format I) */
|
||
#define IF1 {R1, R2}
|
||
|
||
/* imm-reg instruction format (Format II) */
|
||
#define IF2 {I5, R2}
|
||
|
||
/* conditional branch instruction format (Format III) */
|
||
#define IF3 {D9}
|
||
|
||
/* 16-bit load/store instruction (Format IV) */
|
||
#define IF4A {D7, EP, R2}
|
||
#define IF4B {R2, D7, EP}
|
||
#define IF4C {D8_7, EP, R2}
|
||
#define IF4D {R2, D8_7, EP}
|
||
#define IF4E {D8_6, EP, R2}
|
||
#define IF4F {R2, D8_6, EP}
|
||
|
||
/* Jump instruction (Format V) */
|
||
#define IF5 {D22}
|
||
|
||
/* 3 operand instruction (Format VI) */
|
||
#define IF6 {I16, R1, R2}
|
||
|
||
/* 3 operand instruction (Format VI) */
|
||
#define IF6U {I16U, R1, R2}
|
||
|
||
/* 32-bit load/store half/word instruction (Format VII) */
|
||
#define IF7A {D16_15, R1, R2}
|
||
#define IF7B {R2, D16_15, R1}
|
||
|
||
/* 32-bit load/store byte instruction (Format VII) */
|
||
#define IF7C {D16, R1, R2}
|
||
#define IF7D {R2, D16, R1}
|
||
|
||
/* Bit manipulation function. */
|
||
|
||
|
||
|
||
/* The opcode table.
|
||
|
||
The format of the opcode table is:
|
||
|
||
NAME OPCODE MASK { OPERANDS }
|
||
|
||
NAME is the name of the instruction.
|
||
OPCODE is the instruction opcode.
|
||
MASK is the opcode mask; this is used to tell the disassembler
|
||
which bits in the actual opcode must match OPCODE.
|
||
OPERANDS is the list of operands.
|
||
|
||
The disassembler reads the table in order and prints the first
|
||
instruction which matches, so this table is sorted to put more
|
||
specific instructions before more general instructions. It is also
|
||
sorted by major opcode. */
|
||
|
||
const struct v850_opcode v850_opcodes[] = {
|
||
{ "breakpoint", 0xffff, 0xffff, 0, 0 },
|
||
/* load/store instructions */
|
||
{ "sld.b", one(0x0300), one(0x0780), IF4A, 1 },
|
||
{ "sld.h", one(0x0400), one(0x0780), IF4C, 1 },
|
||
{ "sld.w", one(0x0500), one(0x0781), IF4E, 1 },
|
||
{ "sst.b", one(0x0380), one(0x0780), IF4B, 2 },
|
||
{ "sst.h", one(0x0480), one(0x0780), IF4D, 2 },
|
||
{ "sst.w", one(0x0501), one(0x0781), IF4F, 2 },
|
||
|
||
{ "ld.b", two(0x0700,0x0000), two (0x07e0,0x0000), IF7C, 1 },
|
||
{ "ld.h", two(0x0720,0x0000), two (0x07e0,0x0001), IF7A, 1 },
|
||
{ "ld.w", two(0x0720,0x0001), two (0x07e0,0x0001), IF7A, 1 },
|
||
{ "st.b", two(0x0740,0x0000), two (0x07e0,0x0000), IF7D, 2 },
|
||
{ "st.h", two(0x0760,0x0000), two (0x07e0,0x0001), IF7B, 2 },
|
||
{ "st.w", two(0x0760,0x0001), two (0x07e0,0x0001), IF7B, 2 },
|
||
|
||
/* arithmetic operation instructions */
|
||
{ "nop", one(0x00), one(0xffff), {0}, 0 },
|
||
{ "mov", OP(0x00), OP_MASK, IF1, 0 },
|
||
{ "mov", OP(0x10), OP_MASK, IF2, 0 },
|
||
{ "movea", OP(0x31), OP_MASK, IF6, 0 },
|
||
{ "movhi", OP(0x32), OP_MASK, IF6, 0 },
|
||
{ "add", OP(0x0e), OP_MASK, IF1, 0 },
|
||
{ "add", OP(0x12), OP_MASK, IF2, 0 },
|
||
{ "addi", OP(0x30), OP_MASK, IF6, 0 },
|
||
{ "sub", OP(0x0d), OP_MASK, IF1, 0 },
|
||
{ "subr", OP(0x0c), OP_MASK, IF1, 0 },
|
||
{ "mulh", OP(0x07), OP_MASK, IF1, 0 },
|
||
{ "mulh", OP(0x17), OP_MASK, IF2, 0 },
|
||
{ "mulhi", OP(0x37), OP_MASK, IF6, 0 },
|
||
{ "divh", OP(0x02), OP_MASK, IF1, 0 },
|
||
{ "cmp", OP(0x0f), OP_MASK, IF1, 0 },
|
||
{ "cmp", OP(0x13), OP_MASK, IF2, 0 },
|
||
{ "setf", two(0x07e0,0x0000), two(0x07f0,0xffff), {CCCC,R2}, 0 },
|
||
|
||
/* saturated operation instructions */
|
||
{ "satadd", OP(0x06), OP_MASK, IF1, 0 },
|
||
{ "satadd", OP(0x11), OP_MASK, IF2, 0 },
|
||
{ "satsub", OP(0x05), OP_MASK, IF1, 0 },
|
||
{ "satsubi", OP(0x33), OP_MASK, IF6, 0 },
|
||
{ "satsubr", OP(0x04), OP_MASK, IF1, 0 },
|
||
|
||
/* logical operation instructions */
|
||
{ "tst", OP(0x0b), OP_MASK, IF1, 0 },
|
||
{ "or", OP(0x08), OP_MASK, IF1, 0 },
|
||
{ "ori", OP(0x34), OP_MASK, IF6U, 0 },
|
||
{ "and", OP(0x0a), OP_MASK, IF1, 0 },
|
||
{ "andi", OP(0x36), OP_MASK, IF6U, 0 },
|
||
{ "xor", OP(0x09), OP_MASK, IF1, 0 },
|
||
{ "xori", OP(0x35), OP_MASK, IF6U, 0 },
|
||
{ "not", OP(0x01), OP_MASK, IF1, 0 },
|
||
{ "sar", OP(0x15), OP_MASK, {I5U, R2}, 0 },
|
||
{ "sar", two(0x07e0,0x00a0), two(0x07e0,0xffff), {R1,R2}, 0 },
|
||
{ "shl", OP(0x16), OP_MASK, {I5U, R2}, 0 },
|
||
{ "shl", two(0x07e0,0x00c0), two(0x07e0,0xffff), {R1,R2}, 0 },
|
||
{ "shr", OP(0x14), OP_MASK, {I5U, R2}, 0 },
|
||
{ "shr", two(0x07e0,0x0080), two(0x07e0,0xffff), {R1,R2}, 0 },
|
||
|
||
/* branch instructions */
|
||
/* signed integer */
|
||
{ "bgt", BOP(0xf), BOP_MASK, IF3, 0 },
|
||
{ "bge", BOP(0xe), BOP_MASK, IF3, 0 },
|
||
{ "blt", BOP(0x6), BOP_MASK, IF3, 0 },
|
||
{ "ble", BOP(0x7), BOP_MASK, IF3, 0 },
|
||
/* unsigned integer */
|
||
{ "bh", BOP(0xb), BOP_MASK, IF3, 0 },
|
||
{ "bnh", BOP(0x3), BOP_MASK, IF3, 0 },
|
||
{ "bl", BOP(0x1), BOP_MASK, IF3, 0 },
|
||
{ "bnl", BOP(0x9), BOP_MASK, IF3, 0 },
|
||
/* common */
|
||
{ "be", BOP(0x2), BOP_MASK, IF3, 0 },
|
||
{ "bne", BOP(0xa), BOP_MASK, IF3, 0 },
|
||
/* others */
|
||
{ "bv", BOP(0x0), BOP_MASK, IF3, 0 },
|
||
{ "bnv", BOP(0x8), BOP_MASK, IF3, 0 },
|
||
{ "bn", BOP(0x4), BOP_MASK, IF3, 0 },
|
||
{ "bp", BOP(0xc), BOP_MASK, IF3, 0 },
|
||
{ "bc", BOP(0x1), BOP_MASK, IF3, 0 },
|
||
{ "bnc", BOP(0x9), BOP_MASK, IF3, 0 },
|
||
{ "bz", BOP(0x2), BOP_MASK, IF3, 0 },
|
||
{ "bnz", BOP(0xa), BOP_MASK, IF3, 0 },
|
||
{ "br", BOP(0x5), BOP_MASK, IF3, 0 },
|
||
{ "bsa", BOP(0xd), BOP_MASK, IF3, 0 },
|
||
|
||
{ "jmp", one(0x0060), one(0xffe0), { R1}, 1 },
|
||
{ "jr", one(0x0780), two(0xffc0,0x0001),{ D22 }, 0 },
|
||
{ "jarl", one(0x0780), two(0x07c0,0x0001),{ D22, R2 }, 0 },
|
||
|
||
/* bit manipulation instructions */
|
||
{ "set1", two(0x07c0,0x0000), two(0xc7e0,0x0000), {B3, D16, R1}, 2 },
|
||
{ "not1", two(0x47c0,0x0000), two(0xc7e0,0x0000), {B3, D16, R1}, 2 },
|
||
{ "clr1", two(0x87c0,0x0000), two(0xc7e0,0x0000), {B3, D16, R1}, 2 },
|
||
{ "tst1", two(0xc7c0,0x0000), two(0xc7e0,0x0000), {B3, D16, R1}, 2 },
|
||
|
||
/* special instructions */
|
||
{ "di", two(0x07e0,0x0160), two(0xffff,0xffff), {0}, 0 },
|
||
{ "ei", two(0x87e0,0x0160), two(0xffff,0xffff), {0}, 0 },
|
||
{ "halt", two(0x07e0,0x0120), two(0xffff,0xffff), {0}, 0 },
|
||
{ "reti", two(0x07e0,0x0140), two(0xffff,0xffff), {0}, 0 },
|
||
{ "trap", two(0x07e0,0x0100), two(0xffe0,0xffff), {I5U}, 0 },
|
||
{ "ldsr", two(0x07e0,0x0020), two(0x07e0,0xffff), {R1,SR2}, 0 },
|
||
{ "stsr", two(0x07e0,0x0040), two(0x07e0,0xffff), {SR1,R2}, 0 },
|
||
{ 0, 0, 0, {0}, 0 },
|
||
|
||
} ;
|
||
|
||
const int v850_num_opcodes =
|
||
sizeof (v850_opcodes) / sizeof (v850_opcodes[0]);
|
||
|
||
|
||
/* The functions used to insert and extract complicated operands. */
|
||
|
||
static unsigned long
|
||
insert_d9 (insn, value, errmsg)
|
||
unsigned long insn;
|
||
long value;
|
||
const char **errmsg;
|
||
{
|
||
if (value > 0xff || value < -0x100)
|
||
*errmsg = "branch value out of range";
|
||
|
||
if ((value % 2) != 0)
|
||
*errmsg = "branch to odd offset";
|
||
|
||
return (insn | ((value & 0x1f0) << 7) | ((value & 0x0e) << 3));
|
||
}
|
||
|
||
static long
|
||
extract_d9 (insn, invalid)
|
||
unsigned long insn;
|
||
int *invalid;
|
||
{
|
||
long ret = ((insn & 0xf800) >> 7) | ((insn & 0x0070) >> 3);
|
||
|
||
if ((insn & 0x8000) != 0)
|
||
ret -= 0x0200;
|
||
|
||
return ret;
|
||
}
|
||
|
||
static unsigned long
|
||
insert_d22 (insn, value, errmsg)
|
||
unsigned long insn;
|
||
long value;
|
||
const char **errmsg;
|
||
{
|
||
if (value > 0x1fffff || value < -0x200000)
|
||
*errmsg = "branch value out of range";
|
||
|
||
if ((value % 2) != 0)
|
||
*errmsg = "branch to odd offset";
|
||
|
||
return (insn | ((value & 0xfffe) << 16) | ((value & 0x3f0000) >> 16));
|
||
}
|
||
|
||
static long
|
||
extract_d22 (insn, invalid)
|
||
unsigned long insn;
|
||
int *invalid;
|
||
{
|
||
int ret = ((insn & 0xfffe0000) >> 16) | ((insn & 0x3f) << 16);
|
||
|
||
return ((ret << 10) >> 10);
|
||
}
|
||
|
||
static unsigned long
|
||
insert_d16_15 (insn, value, errmsg)
|
||
unsigned long insn;
|
||
long value;
|
||
const char **errmsg;
|
||
{
|
||
if (value > 0x7fff || value < -0x8000)
|
||
*errmsg = "value out of range";
|
||
|
||
if ((value % 2) != 0)
|
||
*errmsg = "load/store half/word at odd offset";
|
||
|
||
return (insn | ((value & 0xfffe) << 16));
|
||
}
|
||
|
||
static long
|
||
extract_d16_15 (insn, invalid)
|
||
unsigned long insn;
|
||
int *invalid;
|
||
{
|
||
int ret = ((insn & 0xfffe0000) >> 16);
|
||
|
||
return ((ret << 16) >> 16);
|
||
}
|
||
|
||
static unsigned long
|
||
insert_d8_7 (insn, value, errmsg)
|
||
unsigned long insn;
|
||
long value;
|
||
const char **errmsg;
|
||
{
|
||
if (value > 0xff || value < 0)
|
||
*errmsg = "short load/store half value out of range";
|
||
|
||
if ((value % 2) != 0)
|
||
*errmsg = "short load/store half at odd offset";
|
||
|
||
value >>= 1;
|
||
|
||
return (insn | (value & 0x7f));
|
||
}
|
||
|
||
static long
|
||
extract_d8_7 (insn, invalid)
|
||
unsigned long insn;
|
||
int *invalid;
|
||
{
|
||
int ret = (insn & 0x7f);
|
||
|
||
return ret << 1;
|
||
}
|
||
|
||
static unsigned long
|
||
insert_d8_6 (insn, value, errmsg)
|
||
unsigned long insn;
|
||
long value;
|
||
const char **errmsg;
|
||
{
|
||
if (value > 0xff || value < 0)
|
||
*errmsg = "short load/store word value out of range";
|
||
|
||
if ((value % 4) != 0)
|
||
*errmsg = "short load/store word at odd offset";
|
||
|
||
value >>= 1;
|
||
|
||
return (insn | (value & 0x7e));
|
||
}
|
||
|
||
static long
|
||
extract_d8_6 (insn, invalid)
|
||
unsigned long insn;
|
||
int *invalid;
|
||
{
|
||
int ret = (insn & 0x7e);
|
||
|
||
return ret << 1;
|
||
}
|