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qemu/disas/lm32.c
Chetan Pant 61f3c91a67 nomaintainer: Fix Lesser GPL version number 
There is no "version 2" of the "Lesser" General Public License.
It is either "GPL version 2.0" or "Lesser GPL version 2.1".
This patch replaces all occurrences of "Lesser GPL version 2" with
"Lesser GPL version 2.1" in comment section.

This patch contains all the files, whose maintainer I could not get
from ‘get_maintainer.pl’ script.

Signed-off-by: Chetan Pant <chetan4windows@gmail.com>
Message-Id: <20201023124424.20177-1-chetan4windows@gmail.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
[thuth: Adapted exec.c and qdev-monitor.c to new location]
Signed-off-by: Thomas Huth <thuth@redhat.com>
2020-11-15 17:04:40 +01:00

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/*
* Simple LatticeMico32 disassembler.
*
* Copyright (c) 2012 Michael Walle <michael@walle.cc>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "disas/dis-asm.h"
typedef enum {
LM32_OP_SRUI = 0, LM32_OP_NORI, LM32_OP_MULI, LM32_OP_SH, LM32_OP_LB,
LM32_OP_SRI, LM32_OP_XORI, LM32_OP_LH, LM32_OP_ANDI, LM32_OP_XNORI,
LM32_OP_LW, LM32_OP_LHU, LM32_OP_SB, LM32_OP_ADDI, LM32_OP_ORI,
LM32_OP_SLI, LM32_OP_LBU, LM32_OP_BE, LM32_OP_BG, LM32_OP_BGE,
LM32_OP_BGEU, LM32_OP_BGU, LM32_OP_SW, LM32_OP_BNE, LM32_OP_ANDHI,
LM32_OP_CMPEI, LM32_OP_CMPGI, LM32_OP_CMPGEI, LM32_OP_CMPGEUI,
LM32_OP_CMPGUI, LM32_OP_ORHI, LM32_OP_CMPNEI, LM32_OP_SRU, LM32_OP_NOR,
LM32_OP_MUL, LM32_OP_DIVU, LM32_OP_RCSR, LM32_OP_SR, LM32_OP_XOR,
LM32_OP_ILL0, LM32_OP_AND, LM32_OP_XNOR, LM32_OP_ILL1, LM32_OP_SCALL,
LM32_OP_SEXTB, LM32_OP_ADD, LM32_OP_OR, LM32_OP_SL, LM32_OP_B,
LM32_OP_MODU, LM32_OP_SUB, LM32_OP_ILL2, LM32_OP_WCSR, LM32_OP_ILL3,
LM32_OP_CALL, LM32_OP_SEXTH, LM32_OP_BI, LM32_OP_CMPE, LM32_OP_CMPG,
LM32_OP_CMPGE, LM32_OP_CMPGEU, LM32_OP_CMPGU, LM32_OP_CALLI, LM32_OP_CMPNE,
} Lm32Opcode;
typedef enum {
FMT_INVALID = 0, FMT_RRI5, FMT_RRI16, FMT_IMM26, FMT_LOAD, FMT_STORE,
FMT_RRR, FMT_R, FMT_RNR, FMT_CRN, FMT_CNR, FMT_BREAK,
} Lm32OpcodeFmt;
typedef enum {
LM32_CSR_IE = 0, LM32_CSR_IM, LM32_CSR_IP, LM32_CSR_ICC, LM32_CSR_DCC,
LM32_CSR_CC, LM32_CSR_CFG, LM32_CSR_EBA, LM32_CSR_DC, LM32_CSR_DEBA,
LM32_CSR_CFG2, LM32_CSR_JTX = 0xe, LM32_CSR_JRX, LM32_CSR_BP0,
LM32_CSR_BP1, LM32_CSR_BP2, LM32_CSR_BP3, LM32_CSR_WP0 = 0x18,
LM32_CSR_WP1, LM32_CSR_WP2, LM32_CSR_WP3,
} Lm32CsrNum;
typedef struct {
int csr;
const char *name;
} Lm32CsrInfo;
static const Lm32CsrInfo lm32_csr_info[] = {
{LM32_CSR_IE, "ie", },
{LM32_CSR_IM, "im", },
{LM32_CSR_IP, "ip", },
{LM32_CSR_ICC, "icc", },
{LM32_CSR_DCC, "dcc", },
{LM32_CSR_CC, "cc", },
{LM32_CSR_CFG, "cfg", },
{LM32_CSR_EBA, "eba", },
{LM32_CSR_DC, "dc", },
{LM32_CSR_DEBA, "deba", },
{LM32_CSR_CFG2, "cfg2", },
{LM32_CSR_JTX, "jtx", },
{LM32_CSR_JRX, "jrx", },
{LM32_CSR_BP0, "bp0", },
{LM32_CSR_BP1, "bp1", },
{LM32_CSR_BP2, "bp2", },
{LM32_CSR_BP3, "bp3", },
{LM32_CSR_WP0, "wp0", },
{LM32_CSR_WP1, "wp1", },
{LM32_CSR_WP2, "wp2", },
{LM32_CSR_WP3, "wp3", },
};
static const Lm32CsrInfo *find_csr_info(int csr)
{
const Lm32CsrInfo *info;
int i;
for (i = 0; i < ARRAY_SIZE(lm32_csr_info); i++) {
info = &lm32_csr_info[i];
if (csr == info->csr) {
return info;
}
}
return NULL;
}
typedef struct {
int reg;
const char *name;
} Lm32RegInfo;
typedef enum {
LM32_REG_R0 = 0, LM32_REG_R1, LM32_REG_R2, LM32_REG_R3, LM32_REG_R4,
LM32_REG_R5, LM32_REG_R6, LM32_REG_R7, LM32_REG_R8, LM32_REG_R9,
LM32_REG_R10, LM32_REG_R11, LM32_REG_R12, LM32_REG_R13, LM32_REG_R14,
LM32_REG_R15, LM32_REG_R16, LM32_REG_R17, LM32_REG_R18, LM32_REG_R19,
LM32_REG_R20, LM32_REG_R21, LM32_REG_R22, LM32_REG_R23, LM32_REG_R24,
LM32_REG_R25, LM32_REG_GP, LM32_REG_FP, LM32_REG_SP, LM32_REG_RA,
LM32_REG_EA, LM32_REG_BA,
} Lm32RegNum;
static const Lm32RegInfo lm32_reg_info[] = {
{LM32_REG_R0, "r0", },
{LM32_REG_R1, "r1", },
{LM32_REG_R2, "r2", },
{LM32_REG_R3, "r3", },
{LM32_REG_R4, "r4", },
{LM32_REG_R5, "r5", },
{LM32_REG_R6, "r6", },
{LM32_REG_R7, "r7", },
{LM32_REG_R8, "r8", },
{LM32_REG_R9, "r9", },
{LM32_REG_R10, "r10", },
{LM32_REG_R11, "r11", },
{LM32_REG_R12, "r12", },
{LM32_REG_R13, "r13", },
{LM32_REG_R14, "r14", },
{LM32_REG_R15, "r15", },
{LM32_REG_R16, "r16", },
{LM32_REG_R17, "r17", },
{LM32_REG_R18, "r18", },
{LM32_REG_R19, "r19", },
{LM32_REG_R20, "r20", },
{LM32_REG_R21, "r21", },
{LM32_REG_R22, "r22", },
{LM32_REG_R23, "r23", },
{LM32_REG_R24, "r24", },
{LM32_REG_R25, "r25", },
{LM32_REG_GP, "gp", },
{LM32_REG_FP, "fp", },
{LM32_REG_SP, "sp", },
{LM32_REG_RA, "ra", },
{LM32_REG_EA, "ea", },
{LM32_REG_BA, "ba", },
};
static const Lm32RegInfo *find_reg_info(int reg)
{
assert(ARRAY_SIZE(lm32_reg_info) == 32);
return &lm32_reg_info[reg & 0x1f];
}
typedef struct {
struct {
uint32_t code;
uint32_t mask;
} op;
const char *name;
const char *args_fmt;
} Lm32OpcodeInfo;
static const Lm32OpcodeInfo lm32_opcode_info[] = {
/* pseudo instructions */
{{0x34000000, 0xffffffff}, "nop", NULL},
{{0xac000002, 0xffffffff}, "break", NULL},
{{0xac000003, 0xffffffff}, "scall", NULL},
{{0xc3e00000, 0xffffffff}, "bret", NULL},
{{0xc3c00000, 0xffffffff}, "eret", NULL},
{{0xc3a00000, 0xffffffff}, "ret", NULL},
{{0xa4000000, 0xfc1f07ff}, "not", "%2, %0"},
{{0xb8000000, 0xfc1f07ff}, "mv", "%2, %0"},
{{0x71e00000, 0xffe00000}, "mvhi", "%1, %u"},
{{0x34000000, 0xffe00000}, "mvi", "%1, %s"},
#define _O(op) {op << 26, 0x3f << 26}
/* regular opcodes */
{_O(LM32_OP_ADD), "add", "%2, %0, %1" },
{_O(LM32_OP_ADDI), "addi", "%1, %0, %s" },
{_O(LM32_OP_AND), "and", "%2, %0, %1" },
{_O(LM32_OP_ANDHI), "andhi", "%1, %0, %u" },
{_O(LM32_OP_ANDI), "andi", "%1, %0, %u" },
{_O(LM32_OP_B), "b", "%0", },
{_O(LM32_OP_BE), "be", "%1, %0, %r" },
{_O(LM32_OP_BG), "bg", "%1, %0, %r" },
{_O(LM32_OP_BGE), "bge", "%1, %0, %r" },
{_O(LM32_OP_BGEU), "bgeu", "%1, %0, %r" },
{_O(LM32_OP_BGU), "bgu", "%1, %0, %r" },
{_O(LM32_OP_BI), "bi", "%R", },
{_O(LM32_OP_BNE), "bne", "%1, %0, %r" },
{_O(LM32_OP_CALL), "call", "%0", },
{_O(LM32_OP_CALLI), "calli", "%R", },
{_O(LM32_OP_CMPE), "cmpe", "%2, %0, %1" },
{_O(LM32_OP_CMPEI), "cmpei", "%1, %0, %s" },
{_O(LM32_OP_CMPG), "cmpg", "%2, %0, %1" },
{_O(LM32_OP_CMPGE), "cmpge", "%2, %0, %1" },
{_O(LM32_OP_CMPGEI), "cmpgei", "%1, %0, %s" },
{_O(LM32_OP_CMPGEU), "cmpgeu", "%2, %0, %1" },
{_O(LM32_OP_CMPGEUI), "cmpgeui", "%1, %0, %s" },
{_O(LM32_OP_CMPGI), "cmpgi", "%1, %0, %s" },
{_O(LM32_OP_CMPGU), "cmpgu", "%2, %0, %1" },
{_O(LM32_OP_CMPGUI), "cmpgui", "%1, %0, %s" },
{_O(LM32_OP_CMPNE), "cmpne", "%2, %0, %1" },
{_O(LM32_OP_CMPNEI), "cmpnei", "%1, %0, %s" },
{_O(LM32_OP_DIVU), "divu", "%2, %0, %1" },
{_O(LM32_OP_LB), "lb", "%1, (%0+%s)" },
{_O(LM32_OP_LBU), "lbu", "%1, (%0+%s)" },
{_O(LM32_OP_LH), "lh", "%1, (%0+%s)" },
{_O(LM32_OP_LHU), "lhu", "%1, (%0+%s)" },
{_O(LM32_OP_LW), "lw", "%1, (%0+%s)" },
{_O(LM32_OP_MODU), "modu", "%2, %0, %1" },
{_O(LM32_OP_MULI), "muli", "%1, %0, %s" },
{_O(LM32_OP_MUL), "mul", "%2, %0, %1" },
{_O(LM32_OP_NORI), "nori", "%1, %0, %u" },
{_O(LM32_OP_NOR), "nor", "%2, %0, %1" },
{_O(LM32_OP_ORHI), "orhi", "%1, %0, %u" },
{_O(LM32_OP_ORI), "ori", "%1, %0, %u" },
{_O(LM32_OP_OR), "or", "%2, %0, %1" },
{_O(LM32_OP_RCSR), "rcsr", "%2, %c", },
{_O(LM32_OP_SB), "sb", "(%0+%s), %1" },
{_O(LM32_OP_SEXTB), "sextb", "%2, %0", },
{_O(LM32_OP_SEXTH), "sexth", "%2, %0", },
{_O(LM32_OP_SH), "sh", "(%0+%s), %1" },
{_O(LM32_OP_SLI), "sli", "%1, %0, %h" },
{_O(LM32_OP_SL), "sl", "%2, %0, %1" },
{_O(LM32_OP_SRI), "sri", "%1, %0, %h" },
{_O(LM32_OP_SR), "sr", "%2, %0, %1" },
{_O(LM32_OP_SRUI), "srui", "%1, %0, %d" },
{_O(LM32_OP_SRU), "sru", "%2, %0, %s" },
{_O(LM32_OP_SUB), "sub", "%2, %0, %s" },
{_O(LM32_OP_SW), "sw", "(%0+%s), %1" },
{_O(LM32_OP_WCSR), "wcsr", "%c, %1", },
{_O(LM32_OP_XNORI), "xnori", "%1, %0, %u" },
{_O(LM32_OP_XNOR), "xnor", "%2, %0, %1" },
{_O(LM32_OP_XORI), "xori", "%1, %0, %u" },
{_O(LM32_OP_XOR), "xor", "%2, %0, %1" },
#undef _O
};
static const Lm32OpcodeInfo *find_opcode_info(uint32_t opcode)
{
const Lm32OpcodeInfo *info;
int i;
for (i = 0; i < ARRAY_SIZE(lm32_opcode_info); i++) {
info = &lm32_opcode_info[i];
if ((opcode & info->op.mask) == info->op.code) {
return info;
}
}
return NULL;
}
int print_insn_lm32(bfd_vma memaddr, struct disassemble_info *info)
{
fprintf_function fprintf_fn = info->fprintf_func;
void *stream = info->stream;
int rc;
uint8_t insn[4];
const Lm32OpcodeInfo *opc_info;
uint32_t op;
const char *args_fmt;
rc = info->read_memory_func(memaddr, insn, 4, info);
if (rc != 0) {
info->memory_error_func(rc, memaddr, info);
return -1;
}
fprintf_fn(stream, "%02x %02x %02x %02x ",
insn[0], insn[1], insn[2], insn[3]);
op = bfd_getb32(insn);
opc_info = find_opcode_info(op);
if (opc_info) {
fprintf_fn(stream, "%-8s ", opc_info->name);
args_fmt = opc_info->args_fmt;
while (args_fmt && *args_fmt) {
if (*args_fmt == '%') {
switch (*(++args_fmt)) {
case '0': {
uint8_t r0;
const char *r0_name;
r0 = (op >> 21) & 0x1f;
r0_name = find_reg_info(r0)->name;
fprintf_fn(stream, "%s", r0_name);
break;
}
case '1': {
uint8_t r1;
const char *r1_name;
r1 = (op >> 16) & 0x1f;
r1_name = find_reg_info(r1)->name;
fprintf_fn(stream, "%s", r1_name);
break;
}
case '2': {
uint8_t r2;
const char *r2_name;
r2 = (op >> 11) & 0x1f;
r2_name = find_reg_info(r2)->name;
fprintf_fn(stream, "%s", r2_name);
break;
}
case 'c': {
uint8_t csr;
const Lm32CsrInfo *info;
csr = (op >> 21) & 0x1f;
info = find_csr_info(csr);
if (info) {
fprintf_fn(stream, "%s", info->name);
} else {
fprintf_fn(stream, "0x%x", csr);
}
break;
}
case 'u': {
uint16_t u16;
u16 = op & 0xffff;
fprintf_fn(stream, "0x%x", u16);
break;
}
case 's': {
int16_t s16;
s16 = (int16_t)(op & 0xffff);
fprintf_fn(stream, "%d", s16);
break;
}
case 'r': {
uint32_t rela;
rela = memaddr + (((int16_t)(op & 0xffff)) << 2);
fprintf_fn(stream, "%x", rela);
break;
}
case 'R': {
uint32_t rela;
int32_t imm26;
imm26 = (int32_t)((op & 0x3ffffff) << 6) >> 4;
rela = memaddr + imm26;
fprintf_fn(stream, "%x", rela);
break;
}
case 'h': {
uint8_t u5;
u5 = (op & 0x1f);
fprintf_fn(stream, "%d", u5);
break;
}
default:
break;
}
} else {
fprintf_fn(stream, "%c", *args_fmt);
}
args_fmt++;
}
} else {
fprintf_fn(stream, ".word 0x%x", op);
}
return 4;
}
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