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radare2/libr/anal/p/anal_v810.c
Maijin 4bb5c15faa r_lib_struct_t -> RLibStruct
2017-11-10 13:38:05 +01:00

450 lines
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/* radare - LGPL - Copyright 2015 - danielps */
#include <string.h>
#include <r_types.h>
#include <r_lib.h>
#include <r_asm.h>
#include <r_anal.h>
#include <r_util.h>
#include <v810_disas.h>
enum {
V810_FLAG_CY,
V810_FLAG_OV,
V810_FLAG_S,
V810_FLAG_Z,
};
static void update_flags(RAnalOp *op, int flags) {
if (flags & V810_FLAG_CY) r_strbuf_append(&op->esil, ",$c31,cy,=");
if (flags & V810_FLAG_OV) r_strbuf_append(&op->esil, ",$o,ov,=");
if (flags & V810_FLAG_S) r_strbuf_append(&op->esil, ",$s,s,=");
if (flags & V810_FLAG_Z) r_strbuf_append(&op->esil, ",$z,z,=");
}
static void clear_flags(RAnalOp *op, int flags) {
if (flags & V810_FLAG_CY) r_strbuf_append(&op->esil, ",0,cy,=");
if (flags & V810_FLAG_OV) r_strbuf_append(&op->esil, ",0,ov,=");
if (flags & V810_FLAG_S) r_strbuf_append(&op->esil, ",0,s,=");
if (flags & V810_FLAG_Z) r_strbuf_append(&op->esil, ",0,z,=");
}
static int v810_op(RAnal *anal, RAnalOp *op, ut64 addr, const ut8 *buf, int len) {
int ret;
ut8 opcode, reg1, reg2, imm5, cond;
ut16 word1, word2 = 0;
st32 jumpdisp;
struct v810_cmd cmd;
memset (&cmd, 0, sizeof(cmd));
memset (op, 0, sizeof(RAnalOp));
r_strbuf_init (&op->esil);
r_strbuf_set (&op->esil, "");
ret = op->size = v810_decode_command (buf, len, &cmd);
if (ret <= 0) {
return ret;
}
word1 = r_read_ble16 (buf, anal->big_endian);
if (ret == 4) {
word2 = r_read_ble16 (buf+2, anal->big_endian);
}
op->addr = addr;
op->jump = op->fail = -1;
op->ptr = op->val = -1;
opcode = OPCODE(word1);
if (opcode>>3 == 0x4)
opcode &= 0x20;
switch (opcode) {
case V810_MOV:
op->type = R_ANAL_OP_TYPE_MOV;
r_strbuf_appendf (&op->esil, "r%u,r%u,=",
REG1(word1), REG2(word1));
break;
case V810_MOV_IMM5:
op->type = R_ANAL_OP_TYPE_MOV;
r_strbuf_appendf (&op->esil, "%d,r%u,=",
(st8)SEXT5(IMM5(word1)), REG2(word1));
break;
case V810_MOVHI:
op->type = R_ANAL_OP_TYPE_MOV;
r_strbuf_appendf (&op->esil, "16,%hu,<<,r%u,+,r%u,=",
word2, REG1(word1), REG2(word1));
break;
case V810_MOVEA:
op->type = R_ANAL_OP_TYPE_MOV;
r_strbuf_appendf (&op->esil, "%hd,r%u,+,r%u,=",
word2, REG1(word1), REG2(word1));
break;
case V810_LDSR:
op->type = R_ANAL_OP_TYPE_MOV;
break;
case V810_STSR:
op->type = R_ANAL_OP_TYPE_MOV;
break;
case V810_NOT:
op->type = R_ANAL_OP_TYPE_NOT;
r_strbuf_appendf (&op->esil, "r%u,0xffffffff,^,r%u,=",
REG1(word1), REG2(word1));
update_flags (op, V810_FLAG_S | V810_FLAG_Z);
clear_flags (op, V810_FLAG_OV);
break;
case V810_DIV:
case V810_DIVU:
op->type = R_ANAL_OP_TYPE_DIV;
r_strbuf_appendf (&op->esil, "r%u,r%u,/=,r%u,r%u,%,r30,=",
REG1(word1), REG2(word1),
REG1(word1), REG2(word1));
update_flags (op, V810_FLAG_OV | V810_FLAG_S | V810_FLAG_Z);
break;
case V810_JMP:
if (REG1(word1) == 31)
op->type = R_ANAL_OP_TYPE_RET;
else
op->type = R_ANAL_OP_TYPE_UJMP;
r_strbuf_appendf (&op->esil, "r%u,pc,=",
REG1(word1));
break;
case V810_OR:
op->type = R_ANAL_OP_TYPE_OR;
r_strbuf_appendf (&op->esil, "r%u,r%u,|=",
REG1(word1), REG2(word1));
update_flags (op, V810_FLAG_S | V810_FLAG_Z);
clear_flags (op, V810_FLAG_OV);
break;
case V810_ORI:
op->type = R_ANAL_OP_TYPE_OR;
r_strbuf_appendf (&op->esil, "%hu,r%u,|,r%u,=",
word2, REG1(word1), REG2(word1));
update_flags (op, V810_FLAG_S | V810_FLAG_Z);
clear_flags (op, V810_FLAG_OV);
break;
case V810_MUL:
case V810_MULU:
op->type = R_ANAL_OP_TYPE_MUL;
r_strbuf_appendf (&op->esil, "r%u,r%u,*=,32,r%u,r%u,*,>>,r30,=",
REG1(word1), REG2(word1),
REG1(word1), REG2(word1));
update_flags (op, V810_FLAG_OV | V810_FLAG_S | V810_FLAG_Z);
break;
case V810_XOR:
op->type = R_ANAL_OP_TYPE_XOR;
r_strbuf_appendf (&op->esil, "r%u,r%u,^=",
REG1(word1), REG2(word1));
update_flags (op, V810_FLAG_S | V810_FLAG_Z);
clear_flags (op, V810_FLAG_OV);
break;
case V810_XORI:
op->type = R_ANAL_OP_TYPE_XOR;
r_strbuf_appendf (&op->esil, "%hu,r%u,^,r%u,=",
word2, REG1(word1), REG2(word1));
update_flags (op, V810_FLAG_S | V810_FLAG_Z);
clear_flags (op, V810_FLAG_OV);
break;
case V810_AND:
op->type = R_ANAL_OP_TYPE_AND;
r_strbuf_appendf (&op->esil, "r%u,r%u,&=",
REG1(word1), REG2(word1));
update_flags (op, V810_FLAG_S | V810_FLAG_Z);
clear_flags (op, V810_FLAG_OV);
break;
case V810_ANDI:
op->type = R_ANAL_OP_TYPE_AND;
r_strbuf_appendf (&op->esil, "%hu,r%u,&,r%u,=",
word2, REG1(word1), REG2(word1));
update_flags (op, V810_FLAG_Z);
clear_flags (op, V810_FLAG_OV | V810_FLAG_S);
break;
case V810_CMP:
op->type = R_ANAL_OP_TYPE_CMP;
r_strbuf_appendf (&op->esil, "r%u,r%u,==",
REG1(word1), REG2(word1));
update_flags (op, -1);
break;
case V810_CMP_IMM5:
op->type = R_ANAL_OP_TYPE_CMP;
r_strbuf_appendf (&op->esil, "%d,r%u,==",
(st8)SEXT5(IMM5(word1)), REG2(word1));
update_flags (op, -1);
break;
case V810_SUB:
op->type = R_ANAL_OP_TYPE_SUB;
r_strbuf_appendf (&op->esil, "r%u,r%u,-=",
REG1(word1), REG2(word1));
update_flags (op, -1);
break;
case V810_ADD:
op->type = R_ANAL_OP_TYPE_ADD;
r_strbuf_appendf (&op->esil, "r%u,r%u,+=",
REG1(word1), REG2(word1));
update_flags (op, -1);
break;
case V810_ADDI:
op->type = R_ANAL_OP_TYPE_ADD;
r_strbuf_appendf (&op->esil, "%hd,r%u,+,r%u,=",
word2, REG1(word1), REG2(word1));
update_flags (op, -1);
break;
case V810_ADD_IMM5:
op->type = R_ANAL_OP_TYPE_ADD;
r_strbuf_appendf (&op->esil, "%d,r%u,+=",
(st8)SEXT5(IMM5(word1)), REG2(word1));
update_flags(op, -1);
break;
case V810_SHR:
op->type = R_ANAL_OP_TYPE_SHR;
r_strbuf_appendf (&op->esil, "r%u,r%u,>>=",
REG1(word1), REG2(word1));
update_flags (op, V810_FLAG_CY | V810_FLAG_S | V810_FLAG_Z);
clear_flags (op, V810_FLAG_OV);
break;
case V810_SHR_IMM5:
op->type = R_ANAL_OP_TYPE_SHR;
r_strbuf_appendf (&op->esil, "%u,r%u,>>=",
(ut8)IMM5(word1), REG2(word1));
update_flags (op, V810_FLAG_CY | V810_FLAG_S | V810_FLAG_Z);
clear_flags (op, V810_FLAG_OV);
break;
case V810_SAR:
op->type = R_ANAL_OP_TYPE_SAR;
reg1 = REG1(word1);
reg2 = REG2(word1);
r_strbuf_appendf (&op->esil, "31,r%u,>>,?{,r%u,32,-,r%u,1,<<,--,<<,}{,0,},r%u,r%u,>>,|,r%u,=",
reg2, reg1, reg1, reg1, reg2, reg2);
update_flags (op, V810_FLAG_CY | V810_FLAG_S | V810_FLAG_Z);
clear_flags (op, V810_FLAG_OV);
break;
case V810_SAR_IMM5:
op->type = R_ANAL_OP_TYPE_SAR;
imm5 = IMM5(word1);
reg2 = REG2(word1);
r_strbuf_appendf (&op->esil, "31,r%u,>>,?{,%u,32,-,%u,1,<<,--,<<,}{,0,},%u,r%u,>>,|,r%u,=",
reg2, (ut8)imm5, (ut8)imm5, (ut8)imm5, reg2, reg2);
update_flags (op, V810_FLAG_CY | V810_FLAG_S | V810_FLAG_Z);
clear_flags (op, V810_FLAG_OV);
break;
case V810_SHL:
op->type = R_ANAL_OP_TYPE_SHL;
r_strbuf_appendf (&op->esil, "r%u,r%u,<<=",
REG1(word1), REG2(word1));
update_flags (op, V810_FLAG_CY | V810_FLAG_S | V810_FLAG_Z);
clear_flags (op, V810_FLAG_OV);
break;
case V810_SHL_IMM5:
op->type = R_ANAL_OP_TYPE_SHL;
r_strbuf_appendf (&op->esil, "%u,r%u,<<=",
(ut8)IMM5(word1), REG2(word1));
update_flags (op, V810_FLAG_CY | V810_FLAG_S | V810_FLAG_Z);
clear_flags (op, V810_FLAG_OV);
break;
case V810_LDB:
op->type = R_ANAL_OP_TYPE_LOAD;
r_strbuf_appendf (&op->esil, "r%u,%hd,+,[1],r%u,=",
REG1(word1), word2, REG2(word1));
r_strbuf_appendf (&op->esil, ",DUP,0x80,&,?{,0xffffff00,|,}");
break;
case V810_LDH:
op->type = R_ANAL_OP_TYPE_LOAD;
r_strbuf_appendf (&op->esil, "r%u,%hd,+,0xfffffffe,&,[2],r%u,=",
REG1(word1), word2, REG2(word1));
r_strbuf_appendf (&op->esil, ",DUP,0x8000,&,?{,0xffffff00,|,}");
break;
case V810_LDW:
op->type = R_ANAL_OP_TYPE_LOAD;
r_strbuf_appendf (&op->esil, "r%u,%hd,+,0xfffffffc,&,[4],r%u,=",
REG1(word1), word2, REG2(word1));
r_strbuf_appendf (&op->esil, ",DUP,0x80000000,&,?{,0xffffff00,|,}");
break;
case V810_STB:
op->type = R_ANAL_OP_TYPE_STORE;
r_strbuf_appendf (&op->esil, "r%u,r%u,%hd,+,=[1]",
REG2(word1), REG1(word1), word2);
break;
case V810_STH:
op->type = R_ANAL_OP_TYPE_STORE;
r_strbuf_appendf (&op->esil, "r%u,r%u,%hd,+,0xfffffffe,&,=[2]",
REG2(word1), REG1(word1), word2);
break;
case V810_STW:
op->type = R_ANAL_OP_TYPE_STORE;
r_strbuf_appendf (&op->esil, "r%u,r%u,%hd,+,=[4]",
REG2(word1), REG1(word1), word2);
break;
case V810_INB:
case V810_INH:
case V810_INW:
case V810_OUTB:
case V810_OUTH:
case V810_OUTW:
op->type = R_ANAL_OP_TYPE_IO;
break;
case V810_TRAP:
op->type = R_ANAL_OP_TYPE_TRAP;
r_strbuf_appendf (&op->esil, "%u,TRAP", IMM5(word1));
break;
case V810_RETI:
op->type = R_ANAL_OP_TYPE_RET;
//r_strbuf_appendf (&op->esil, "np,?{,fepc,fepsw,}{,eipc,eipsw,},psw,=,pc,=");
break;
case V810_JAL:
case V810_JR:
jumpdisp = DISP26(word1, word2);
op->jump = addr + jumpdisp;
op->fail = addr + 4;
if (opcode == V810_JAL) {
op->type = R_ANAL_OP_TYPE_CALL;
r_strbuf_appendf (&op->esil, "$$,4,+,r31,=,", jumpdisp);
} else {
op->type = R_ANAL_OP_TYPE_JMP;
}
r_strbuf_appendf (&op->esil, "$$,%d,+,pc,=", jumpdisp);
break;
case V810_BCOND:
cond = COND(word1);
if (cond == V810_COND_NOP) {
op->type = R_ANAL_OP_TYPE_NOP;
break;
}
jumpdisp = DISP9(word1);
op->jump = addr + jumpdisp;
op->fail = addr + 2;
op->type = R_ANAL_OP_TYPE_CJMP;
switch (cond) {
case V810_COND_V:
r_strbuf_appendf (&op->esil, "ov");
break;
case V810_COND_L:
r_strbuf_appendf (&op->esil, "cy");
break;
case V810_COND_E:
r_strbuf_appendf (&op->esil, "z");
break;
case V810_COND_NH:
r_strbuf_appendf (&op->esil, "cy,z,|");
break;
case V810_COND_N:
r_strbuf_appendf (&op->esil, "s");
break;
case V810_COND_NONE:
r_strbuf_appendf (&op->esil, "1");
break;
case V810_COND_LT:
r_strbuf_appendf (&op->esil, "s,ov,^");
break;
case V810_COND_LE:
r_strbuf_appendf (&op->esil, "s,ov,^,z,|");
break;
case V810_COND_NV:
r_strbuf_appendf (&op->esil, "ov,!");
break;
case V810_COND_NL:
r_strbuf_appendf (&op->esil, "cy,!");
break;
case V810_COND_NE:
r_strbuf_appendf (&op->esil, "z,!");
break;
case V810_COND_H:
r_strbuf_appendf (&op->esil, "cy,z,|,!");
break;
case V810_COND_P:
r_strbuf_appendf (&op->esil, "s,!");
break;
case V810_COND_GE:
r_strbuf_appendf (&op->esil, "s,ov,^,!");
break;
case V810_COND_GT:
r_strbuf_appendf (&op->esil, "s,ov,^,z,|,!");
break;
}
r_strbuf_appendf (&op->esil, ",?{,$$,%d,+,pc,=,}", jumpdisp);
break;
}
return ret;
}
static int set_reg_profile(RAnal *anal) {
const char *p =
"=PC pc\n"
"=SP r3\n"
"=ZF z\n"
"=SF s\n"
"=OF ov\n"
"=CF cy\n"
"gpr r0 .32 0 0\n"
"gpr r1 .32 4 0\n"
"gpr r2 .32 8 0\n"
"gpr r3 .32 12 0\n"
"gpr r4 .32 16 0\n"
"gpr r5 .32 20 0\n"
"gpr r6 .32 24 0\n"
"gpr r7 .32 28 0\n"
"gpr r8 .32 32 0\n"
"gpr r9 .32 36 0\n"
"gpr r10 .32 40 0\n"
"gpr r11 .32 44 0\n"
"gpr r12 .32 48 0\n"
"gpr r13 .32 52 0\n"
"gpr r14 .32 56 0\n"
"gpr r15 .32 60 0\n"
"gpr r16 .32 64 0\n"
"gpr r17 .32 68 0\n"
"gpr r18 .32 72 0\n"
"gpr r19 .32 76 0\n"
"gpr r20 .32 80 0\n"
"gpr r21 .32 84 0\n"
"gpr r22 .32 88 0\n"
"gpr r23 .32 92 0\n"
"gpr r24 .32 96 0\n"
"gpr r25 .32 100 0\n"
"gpr r26 .32 104 0\n"
"gpr r27 .32 108 0\n"
"gpr r28 .32 112 0\n"
"gpr r29 .32 116 0\n"
"gpr r30 .32 120 0\n"
"gpr r31 .32 124 0\n"
"gpr pc .32 128 0\n"
"gpr psw .32 132 0\n"
"gpr np .1 132.16 0\n"
"gpr ep .1 132.17 0\n"
"gpr ae .1 132.18 0\n"
"gpr id .1 132.19 0\n"
"flg cy .1 132.28 0\n"
"flg ov .1 132.29 0\n"
"flg s .1 132.30 0\n"
"flg z .1 132.31 0\n";
return r_reg_set_profile_string (anal->reg, p);
}
RAnalPlugin r_anal_plugin_v810 = {
.name = "v810",
.desc = "V810 code analysis plugin",
.license = "LGPL3",
.arch = "v810",
.bits = 32,
.op = v810_op,
.esil = true,
.set_reg_profile = set_reg_profile,
};
#ifndef CORELIB
RLibStruct radare_plugin = {
.type = R_LIB_TYPE_ANAL,
.data = &r_anal_plugin_v810,
.version = R2_VERSION
};
#endif
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