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|
//===-- PPCInstPrinter.cpp - Convert PPC MCInst to assembly syntax --------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This class prints an PPC MCInst to a .s file.
//
//===----------------------------------------------------------------------===//
/* Capstone Disassembly Engine */
/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2015 */
#ifdef CAPSTONE_HAS_POWERPC
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "PPCInstPrinter.h"
#include "PPCPredicates.h"
#include "../../MCInst.h"
#include "../../utils.h"
#include "../../SStream.h"
#include "../../MCRegisterInfo.h"
#include "../../MathExtras.h"
#include "PPCMapping.h"
#ifndef CAPSTONE_DIET
static const char *getRegisterName(unsigned RegNo);
#endif
static void printOperand(MCInst *MI, unsigned OpNo, SStream *O);
static void printInstruction(MCInst *MI, SStream *O);
static void printAbsBranchOperand(MCInst *MI, unsigned OpNo, SStream *O);
static char *printAliasInstr(MCInst *MI, SStream *OS, MCRegisterInfo *MRI);
static char *printAliasBcc(MCInst *MI, SStream *OS, void *info);
static void printCustomAliasOperand(MCInst *MI, unsigned OpIdx,
unsigned PrintMethodIdx, SStream *OS);
#if 0
static void printRegName(SStream *OS, unsigned RegNo)
{
char *RegName = getRegisterName(RegNo);
if (RegName[0] == 'q' /* QPX */) {
// The system toolchain on the BG/Q does not understand QPX register names
// in .cfi_* directives, so print the name of the floating-point
// subregister instead.
RegName[0] = 'f';
}
SStream_concat0(OS, RegName);
}
#endif
static void set_mem_access(MCInst *MI, bool status)
{
if (MI->csh->detail != CS_OPT_ON)
return;
MI->csh->doing_mem = status;
if (status) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_MEM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].mem.base = PPC_REG_INVALID;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].mem.disp = 0;
} else {
// done, create the next operand slot
MI->flat_insn->detail->ppc.op_count++;
}
}
void PPC_post_printer(csh ud, cs_insn *insn, char *insn_asm, MCInst *mci)
{
if (((cs_struct *)ud)->detail != CS_OPT_ON)
return;
// check if this insn has branch hint
if (strrchr(insn->mnemonic, '+') != NULL && !strstr(insn_asm, ".+")) {
insn->detail->ppc.bh = PPC_BH_PLUS;
} else if (strrchr(insn->mnemonic, '-') != NULL) {
insn->detail->ppc.bh = PPC_BH_MINUS;
}
if (strrchr(insn->mnemonic, '.') != NULL) {
insn->detail->ppc.update_cr0 = true;
}
}
#define GET_INSTRINFO_ENUM
#include "PPCGenInstrInfo.inc"
#define GET_REGINFO_ENUM
#include "PPCGenRegisterInfo.inc"
static void op_addBC(MCInst *MI, unsigned int bc)
{
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.bc = (ppc_bc)bc;
}
}
#define CREQ (0)
#define CRGT (1)
#define CRLT (2)
#define CRUN (3)
static int getBICRCond(int bi)
{
return (bi - PPC_CR0EQ) >> 3;
}
static int getBICR(int bi)
{
return ((bi - PPC_CR0EQ) & 7) + PPC_CR0;
}
static void op_addReg(MCInst *MI, unsigned int reg)
{
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_REG;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].reg = reg;
MI->flat_insn->detail->ppc.op_count++;
}
}
static void add_CRxx(MCInst *MI, ppc_reg reg)
{
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_REG;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].reg = reg;
MI->flat_insn->detail->ppc.op_count++;
}
}
static char *printAliasBcc(MCInst *MI, SStream *OS, void *info)
{
#define GETREGCLASS_CONTAIN(_class, _reg) MCRegisterClass_contains(MCRegisterInfo_getRegClass(MRI, _class), MCOperand_getReg(MCInst_getOperand(MI, _reg)))
SStream ss;
const char *opCode;
char *tmp, *AsmMnem, *AsmOps, *c;
int OpIdx, PrintMethodIdx;
int decCtr = false, needComma = false;
MCRegisterInfo *MRI = (MCRegisterInfo *)info;
SStream_Init(&ss);
switch (MCInst_getOpcode(MI)) {
default: return NULL;
case PPC_gBC:
opCode = "b%s";
break;
case PPC_gBCA:
opCode = "b%sa";
break;
case PPC_gBCCTR:
opCode = "b%sctr";
break;
case PPC_gBCCTRL:
opCode = "b%sctrl";
break;
case PPC_gBCL:
opCode = "b%sl";
break;
case PPC_gBCLA:
opCode = "b%sla";
break;
case PPC_gBCLR:
opCode = "b%slr";
break;
case PPC_gBCLRL:
opCode = "b%slrl";
break;
}
if (MCInst_getNumOperands(MI) == 3 &&
MCOperand_isImm(MCInst_getOperand(MI, 0)) &&
(MCOperand_getImm(MCInst_getOperand(MI, 0)) >= 0) &&
(MCOperand_getImm(MCInst_getOperand(MI, 0)) <= 1)) {
SStream_concat(&ss, opCode, "dnzf");
decCtr = true;
}
if (MCInst_getNumOperands(MI) == 3 &&
MCOperand_isImm(MCInst_getOperand(MI, 0)) &&
(MCOperand_getImm(MCInst_getOperand(MI, 0)) >= 2) &&
(MCOperand_getImm(MCInst_getOperand(MI, 0)) <= 3)) {
SStream_concat(&ss, opCode, "dzf");
decCtr = true;
}
if (MCInst_getNumOperands(MI) == 3 &&
MCOperand_isImm(MCInst_getOperand(MI, 0)) &&
(MCOperand_getImm(MCInst_getOperand(MI, 0)) >= 4) &&
(MCOperand_getImm(MCInst_getOperand(MI, 0)) <= 7) &&
MCOperand_isReg(MCInst_getOperand(MI, 1)) &&
GETREGCLASS_CONTAIN(PPC_CRBITRCRegClassID, 1)) {
int cr = getBICRCond(MCOperand_getReg(MCInst_getOperand(MI, 1)));
switch(cr) {
case CREQ:
SStream_concat(&ss, opCode, "ne");
break;
case CRGT:
SStream_concat(&ss, opCode, "le");
break;
case CRLT:
SStream_concat(&ss, opCode, "ge");
break;
case CRUN:
SStream_concat(&ss, opCode, "ns");
break;
}
if (MCOperand_getImm(MCInst_getOperand(MI, 0)) == 6)
SStream_concat0(&ss, "-");
if (MCOperand_getImm(MCInst_getOperand(MI, 0)) == 7)
SStream_concat0(&ss, "+");
decCtr = false;
}
if (MCInst_getNumOperands(MI) == 3 &&
MCOperand_isImm(MCInst_getOperand(MI, 0)) &&
(MCOperand_getImm(MCInst_getOperand(MI, 0)) >= 8) &&
(MCOperand_getImm(MCInst_getOperand(MI, 0)) <= 9)) {
SStream_concat(&ss, opCode, "dnzt");
decCtr = true;
}
if (MCInst_getNumOperands(MI) == 3 &&
MCOperand_isImm(MCInst_getOperand(MI, 0)) &&
(MCOperand_getImm(MCInst_getOperand(MI, 0)) >= 10) &&
(MCOperand_getImm(MCInst_getOperand(MI, 0)) <= 11)) {
SStream_concat(&ss, opCode, "dzt");
decCtr = true;
}
if (MCInst_getNumOperands(MI) == 3 &&
MCOperand_isImm(MCInst_getOperand(MI, 0)) &&
(MCOperand_getImm(MCInst_getOperand(MI, 0)) >= 12) &&
(MCOperand_getImm(MCInst_getOperand(MI, 0)) <= 15) &&
MCOperand_isReg(MCInst_getOperand(MI, 1)) &&
GETREGCLASS_CONTAIN(PPC_CRBITRCRegClassID, 1)) {
int cr = getBICRCond(MCOperand_getReg(MCInst_getOperand(MI, 1)));
switch(cr) {
case CREQ:
SStream_concat(&ss, opCode, "eq");
break;
case CRGT:
SStream_concat(&ss, opCode, "gt");
break;
case CRLT:
SStream_concat(&ss, opCode, "lt");
break;
case CRUN:
SStream_concat(&ss, opCode, "so");
break;
}
if (MCOperand_getImm(MCInst_getOperand(MI, 0)) == 14)
SStream_concat0(&ss, "-");
if (MCOperand_getImm(MCInst_getOperand(MI, 0)) == 15)
SStream_concat0(&ss, "+");
decCtr = false;
}
if (MCInst_getNumOperands(MI) == 3 &&
MCOperand_isImm(MCInst_getOperand(MI, 0)) &&
((MCOperand_getImm(MCInst_getOperand(MI, 0)) & 0x12)== 16)) {
SStream_concat(&ss, opCode, "dnz");
if (MCOperand_getImm(MCInst_getOperand(MI, 0)) == 24)
SStream_concat0(&ss, "-");
if (MCOperand_getImm(MCInst_getOperand(MI, 0)) == 25)
SStream_concat0(&ss, "+");
needComma = false;
}
if (MCInst_getNumOperands(MI) == 3 &&
MCOperand_isImm(MCInst_getOperand(MI, 0)) &&
((MCOperand_getImm(MCInst_getOperand(MI, 0)) & 0x12)== 18)) {
SStream_concat(&ss, opCode, "dz");
if (MCOperand_getImm(MCInst_getOperand(MI, 0)) == 26)
SStream_concat0(&ss, "-");
if (MCOperand_getImm(MCInst_getOperand(MI, 0)) == 27)
SStream_concat0(&ss, "+");
needComma = false;
}
if (MCOperand_isReg(MCInst_getOperand(MI, 1)) &&
GETREGCLASS_CONTAIN(PPC_CRBITRCRegClassID, 1) &&
MCOperand_isImm(MCInst_getOperand(MI, 0)) &&
(MCOperand_getImm(MCInst_getOperand(MI, 0)) < 16)) {
int cr = getBICR(MCOperand_getReg(MCInst_getOperand(MI, 1)));
if (decCtr) {
int cd;
needComma = true;
SStream_concat0(&ss, " ");
if (cr > PPC_CR0) {
SStream_concat(&ss, "4*cr%d+", cr - PPC_CR0);
}
cd = getBICRCond(MCOperand_getReg(MCInst_getOperand(MI, 1)));
switch(cd) {
case CREQ:
SStream_concat0(&ss, "eq");
if (cr <= PPC_CR0)
add_CRxx(MI, PPC_REG_CR0EQ);
op_addBC(MI, PPC_BC_EQ);
break;
case CRGT:
SStream_concat0(&ss, "gt");
if (cr <= PPC_CR0)
add_CRxx(MI, PPC_REG_CR0GT);
op_addBC(MI, PPC_BC_GT);
break;
case CRLT:
SStream_concat0(&ss, "lt");
if (cr <= PPC_CR0)
add_CRxx(MI, PPC_REG_CR0LT);
op_addBC(MI, PPC_BC_LT);
break;
case CRUN:
SStream_concat0(&ss, "so");
if (cr <= PPC_CR0)
add_CRxx(MI, PPC_REG_CR0UN);
op_addBC(MI, PPC_BC_SO);
break;
}
if (cr > PPC_CR0) {
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_REG;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].reg = MCOperand_getReg(MCInst_getOperand(MI, 1));
MI->flat_insn->detail->ppc.op_count++;
}
}
} else {
if (cr > PPC_CR0) {
needComma = true;
SStream_concat(&ss, " cr%d", cr - PPC_CR0);
op_addReg(MI, PPC_REG_CR0 + cr - PPC_CR0);
}
}
}
if (MCOperand_isImm(MCInst_getOperand(MI, 2)) &&
MCOperand_getImm(MCInst_getOperand(MI, 2)) != 0) {
if (needComma)
SStream_concat0(&ss, ",");
SStream_concat0(&ss, " $\xFF\x03\x01");
}
tmp = cs_strdup(ss.buffer);
AsmMnem = tmp;
for(AsmOps = tmp; *AsmOps; AsmOps++) {
if (*AsmOps == ' ' || *AsmOps == '\t') {
*AsmOps = '\0';
AsmOps++;
break;
}
}
SStream_concat0(OS, AsmMnem);
if (*AsmOps) {
SStream_concat0(OS, "\t");
for (c = AsmOps; *c; c++) {
if (*c == '$') {
c += 1;
if (*c == (char)0xff) {
c += 1;
OpIdx = *c - 1;
c += 1;
PrintMethodIdx = *c - 1;
printCustomAliasOperand(MI, OpIdx, PrintMethodIdx, OS);
} else
printOperand(MI, *c - 1, OS);
} else {
SStream_concat1(OS, *c);
}
}
}
return tmp;
}
static bool isBOCTRBranch(unsigned int op)
{
return ((op >= PPC_BDNZ) && (op <= PPC_BDZp));
}
void PPC_printInst(MCInst *MI, SStream *O, void *Info)
{
char *mnem;
unsigned int opcode = MCInst_getOpcode(MI);
memset(O->buffer, 0, sizeof(O->buffer));
// printf("opcode = %u\n", opcode);
// Check for slwi/srwi mnemonics.
if (opcode == PPC_RLWINM) {
unsigned char SH = (unsigned char)MCOperand_getImm(MCInst_getOperand(MI, 2));
unsigned char MB = (unsigned char)MCOperand_getImm(MCInst_getOperand(MI, 3));
unsigned char ME = (unsigned char)MCOperand_getImm(MCInst_getOperand(MI, 4));
bool useSubstituteMnemonic = false;
if (SH <= 31 && MB == 0 && ME == (31 - SH)) {
SStream_concat0(O, "slwi\t");
MCInst_setOpcodePub(MI, PPC_INS_SLWI);
useSubstituteMnemonic = true;
}
if (SH <= 31 && MB == (32 - SH) && ME == 31) {
SStream_concat0(O, "srwi\t");
MCInst_setOpcodePub(MI, PPC_INS_SRWI);
useSubstituteMnemonic = true;
SH = 32 - SH;
}
if (useSubstituteMnemonic) {
printOperand(MI, 0, O);
SStream_concat0(O, ", ");
printOperand(MI, 1, O);
if (SH > HEX_THRESHOLD)
SStream_concat(O, ", 0x%x", (unsigned int)SH);
else
SStream_concat(O, ", %u", (unsigned int)SH);
if (MI->csh->detail) {
cs_ppc *ppc = &MI->flat_insn->detail->ppc;
ppc->operands[ppc->op_count].type = PPC_OP_IMM;
ppc->operands[ppc->op_count].imm = SH;
++ppc->op_count;
}
return;
}
}
if ((opcode == PPC_OR || opcode == PPC_OR8) &&
MCOperand_getReg(MCInst_getOperand(MI, 1)) == MCOperand_getReg(MCInst_getOperand(MI, 2))) {
SStream_concat0(O, "mr\t");
MCInst_setOpcodePub(MI, PPC_INS_MR);
printOperand(MI, 0, O);
SStream_concat0(O, ", ");
printOperand(MI, 1, O);
return;
}
if (opcode == PPC_RLDICR ||
opcode == PPC_RLDICR_32) {
unsigned char SH = (unsigned char)MCOperand_getImm(MCInst_getOperand(MI, 2));
unsigned char ME = (unsigned char)MCOperand_getImm(MCInst_getOperand(MI, 3));
// rldicr RA, RS, SH, 63-SH == sldi RA, RS, SH
if (63 - SH == ME) {
SStream_concat0(O, "sldi\t");
MCInst_setOpcodePub(MI, PPC_INS_SLDI);
printOperand(MI, 0, O);
SStream_concat0(O, ", ");
printOperand(MI, 1, O);
if (SH > HEX_THRESHOLD)
SStream_concat(O, ", 0x%x", (unsigned int)SH);
else
SStream_concat(O, ", %u", (unsigned int)SH);
if (MI->csh->detail) {
cs_ppc *ppc = &MI->flat_insn->detail->ppc;
ppc->operands[ppc->op_count].type = PPC_OP_IMM;
ppc->operands[ppc->op_count].imm = SH;
++ppc->op_count;
}
return;
}
}
// dcbt[st] is printed manually here because:
// 1. The assembly syntax is different between embedded and server targets
// 2. We must print the short mnemonics for TH == 0 because the
// embedded/server syntax default will not be stable across assemblers
// The syntax for dcbt is:
// dcbt ra, rb, th [server]
// dcbt th, ra, rb [embedded]
// where th can be omitted when it is 0. dcbtst is the same.
if (opcode == PPC_DCBT || opcode == PPC_DCBTST) {
unsigned char TH = (unsigned char)MCOperand_getImm(MCInst_getOperand(MI, 0));
SStream_concat0(O, "dcbt");
MCInst_setOpcodePub(MI, PPC_INS_DCBT);
if (opcode == PPC_DCBTST) {
SStream_concat0(O, "st");
MCInst_setOpcodePub(MI, PPC_INS_DCBTST);
}
if (TH == 16) {
SStream_concat0(O, "t");
MCInst_setOpcodePub(MI, PPC_INS_DCBTSTT);
}
SStream_concat0(O, "\t");
if (MI->csh->mode & CS_MODE_BOOKE && TH != 0 && TH != 16) {
if (TH > HEX_THRESHOLD)
SStream_concat(O, "0x%x, ", (unsigned int)TH);
else
SStream_concat(O, "%u, ", (unsigned int)TH);
if (MI->csh->detail) {
cs_ppc *ppc = &MI->flat_insn->detail->ppc;
ppc->operands[ppc->op_count].type = PPC_OP_IMM;
ppc->operands[ppc->op_count].imm = TH;
++ppc->op_count;
}
}
printOperand(MI, 1, O);
SStream_concat0(O, ", ");
printOperand(MI, 2, O);
if (!(MI->csh->mode & CS_MODE_BOOKE) && TH != 0 && TH != 16) {
if (TH > HEX_THRESHOLD)
SStream_concat(O, ", 0x%x", (unsigned int)TH);
else
SStream_concat(O, ", %u", (unsigned int)TH);
if (MI->csh->detail) {
cs_ppc *ppc = &MI->flat_insn->detail->ppc;
ppc->operands[ppc->op_count].type = PPC_OP_IMM;
ppc->operands[ppc->op_count].imm = TH;
++ppc->op_count;
}
}
return;
}
if (opcode == PPC_DCBF) {
unsigned char L = (unsigned char)MCOperand_getImm(MCInst_getOperand(MI, 0));
if (!L || L == 1 || L == 3) {
SStream_concat0(O, "dcbf");
MCInst_setOpcodePub(MI, PPC_INS_DCBF);
if (L == 1 || L == 3) {
SStream_concat0(O, "l");
MCInst_setOpcodePub(MI, PPC_INS_DCBFL);
}
if (L == 3) {
SStream_concat0(O, "p");
MCInst_setOpcodePub(MI, PPC_INS_DCBFLP);
}
SStream_concat0(O, "\t");
printOperand(MI, 1, O);
SStream_concat0(O, ", ");
printOperand(MI, 2, O);
return;
}
}
if (opcode == PPC_B || opcode == PPC_BA || opcode == PPC_BL ||
opcode == PPC_BLA) {
int64_t bd = MCOperand_getImm(MCInst_getOperand(MI, 0));
bd = SignExtend64(bd, 24);
MCOperand_setImm(MCInst_getOperand(MI, 0), bd);
}
if (opcode == PPC_gBC || opcode == PPC_gBCA || opcode == PPC_gBCL ||
opcode == PPC_gBCLA) {
int64_t bd = MCOperand_getImm(MCInst_getOperand(MI, 2));
bd = SignExtend64(bd, 14);
MCOperand_setImm(MCInst_getOperand(MI, 2), bd);
}
if (isBOCTRBranch(MCInst_getOpcode(MI))) {
if (MCOperand_isImm(MCInst_getOperand(MI,0))) {
int64_t bd = MCOperand_getImm(MCInst_getOperand(MI, 0));
bd = SignExtend64(bd, 14);
MCOperand_setImm(MCInst_getOperand(MI, 0), bd);
}
}
mnem = printAliasBcc(MI, O, Info);
if (!mnem)
mnem = printAliasInstr(MI, O, Info);
if (mnem != NULL) {
if (strlen(mnem) > 0) {
// check to remove the last letter of ('.', '-', '+')
if (mnem[strlen(mnem) - 1] == '-' || mnem[strlen(mnem) - 1] == '+' || mnem[strlen(mnem) - 1] == '.')
mnem[strlen(mnem) - 1] = '\0';
MCInst_setOpcodePub(MI, PPC_map_insn(mnem));
if (MI->csh->detail) {
struct ppc_alias alias;
if (PPC_alias_insn(mnem, &alias)) {
MI->flat_insn->detail->ppc.bc = (ppc_bc)alias.cc;
}
}
}
cs_mem_free(mnem);
} else
printInstruction(MI, O);
const char *mnem_end = strchr(O->buffer, ' ');
unsigned mnem_len = 0;
if (mnem_end)
mnem_len = mnem_end - O->buffer;
if (!mnem_end || mnem_len >= sizeof(MI->flat_insn->mnemonic))
mnem_len = sizeof(MI->flat_insn->mnemonic) - 1;
memset(MI->flat_insn->mnemonic, 0, sizeof(MI->flat_insn->mnemonic));
memcpy(MI->flat_insn->mnemonic, O->buffer, mnem_len);
}
// FIXME
enum ppc_bc_hint {
PPC_BC_LT_MINUS = (0 << 5) | 14,
PPC_BC_LE_MINUS = (1 << 5) | 6,
PPC_BC_EQ_MINUS = (2 << 5) | 14,
PPC_BC_GE_MINUS = (0 << 5) | 6,
PPC_BC_GT_MINUS = (1 << 5) | 14,
PPC_BC_NE_MINUS = (2 << 5) | 6,
PPC_BC_UN_MINUS = (3 << 5) | 14,
PPC_BC_NU_MINUS = (3 << 5) | 6,
PPC_BC_LT_PLUS = (0 << 5) | 15,
PPC_BC_LE_PLUS = (1 << 5) | 7,
PPC_BC_EQ_PLUS = (2 << 5) | 15,
PPC_BC_GE_PLUS = (0 << 5) | 7,
PPC_BC_GT_PLUS = (1 << 5) | 15,
PPC_BC_NE_PLUS = (2 << 5) | 7,
PPC_BC_UN_PLUS = (3 << 5) | 15,
PPC_BC_NU_PLUS = (3 << 5) | 7,
};
// FIXME
// normalize CC to remove _MINUS & _PLUS
static int cc_normalize(int cc)
{
switch(cc) {
default: return cc;
case PPC_BC_LT_MINUS: return PPC_BC_LT;
case PPC_BC_LE_MINUS: return PPC_BC_LE;
case PPC_BC_EQ_MINUS: return PPC_BC_EQ;
case PPC_BC_GE_MINUS: return PPC_BC_GE;
case PPC_BC_GT_MINUS: return PPC_BC_GT;
case PPC_BC_NE_MINUS: return PPC_BC_NE;
case PPC_BC_UN_MINUS: return PPC_BC_UN;
case PPC_BC_NU_MINUS: return PPC_BC_NU;
case PPC_BC_LT_PLUS : return PPC_BC_LT;
case PPC_BC_LE_PLUS : return PPC_BC_LE;
case PPC_BC_EQ_PLUS : return PPC_BC_EQ;
case PPC_BC_GE_PLUS : return PPC_BC_GE;
case PPC_BC_GT_PLUS : return PPC_BC_GT;
case PPC_BC_NE_PLUS : return PPC_BC_NE;
case PPC_BC_UN_PLUS : return PPC_BC_UN;
case PPC_BC_NU_PLUS : return PPC_BC_NU;
}
}
static void printPredicateOperand(MCInst *MI, unsigned OpNo,
SStream *O, const char *Modifier)
{
unsigned Code = (unsigned int)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
MI->flat_insn->detail->ppc.bc = (ppc_bc)cc_normalize(Code);
if (!strcmp(Modifier, "cc")) {
switch ((ppc_predicate)Code) {
default: // unreachable
case PPC_PRED_LT_MINUS:
case PPC_PRED_LT_PLUS:
case PPC_PRED_LT:
SStream_concat0(O, "lt");
return;
case PPC_PRED_LE_MINUS:
case PPC_PRED_LE_PLUS:
case PPC_PRED_LE:
SStream_concat0(O, "le");
return;
case PPC_PRED_EQ_MINUS:
case PPC_PRED_EQ_PLUS:
case PPC_PRED_EQ:
SStream_concat0(O, "eq");
return;
case PPC_PRED_GE_MINUS:
case PPC_PRED_GE_PLUS:
case PPC_PRED_GE:
SStream_concat0(O, "ge");
return;
case PPC_PRED_GT_MINUS:
case PPC_PRED_GT_PLUS:
case PPC_PRED_GT:
SStream_concat0(O, "gt");
return;
case PPC_PRED_NE_MINUS:
case PPC_PRED_NE_PLUS:
case PPC_PRED_NE:
SStream_concat0(O, "ne");
return;
case PPC_PRED_UN_MINUS:
case PPC_PRED_UN_PLUS:
case PPC_PRED_UN:
SStream_concat0(O, "un");
return;
case PPC_PRED_NU_MINUS:
case PPC_PRED_NU_PLUS:
case PPC_PRED_NU:
SStream_concat0(O, "nu");
return;
case PPC_PRED_BIT_SET:
case PPC_PRED_BIT_UNSET:
// llvm_unreachable("Invalid use of bit predicate code");
SStream_concat0(O, "invalid-predicate");
return;
}
}
if (!strcmp(Modifier, "pm")) {
switch ((ppc_predicate)Code) {
case PPC_PRED_LT:
case PPC_PRED_LE:
case PPC_PRED_EQ:
case PPC_PRED_GE:
case PPC_PRED_GT:
case PPC_PRED_NE:
case PPC_PRED_UN:
case PPC_PRED_NU:
return;
case PPC_PRED_LT_MINUS:
case PPC_PRED_LE_MINUS:
case PPC_PRED_EQ_MINUS:
case PPC_PRED_GE_MINUS:
case PPC_PRED_GT_MINUS:
case PPC_PRED_NE_MINUS:
case PPC_PRED_UN_MINUS:
case PPC_PRED_NU_MINUS:
SStream_concat0(O, "-");
return;
case PPC_PRED_LT_PLUS:
case PPC_PRED_LE_PLUS:
case PPC_PRED_EQ_PLUS:
case PPC_PRED_GE_PLUS:
case PPC_PRED_GT_PLUS:
case PPC_PRED_NE_PLUS:
case PPC_PRED_UN_PLUS:
case PPC_PRED_NU_PLUS:
SStream_concat0(O, "+");
return;
case PPC_PRED_BIT_SET:
case PPC_PRED_BIT_UNSET:
// llvm_unreachable("Invalid use of bit predicate code");
SStream_concat0(O, "invalid-predicate");
return;
default: // unreachable
return;
}
// llvm_unreachable("Invalid predicate code");
}
//assert(StringRef(Modifier) == "reg" &&
// "Need to specify 'cc', 'pm' or 'reg' as predicate op modifier!");
printOperand(MI, OpNo + 1, O);
}
static void printATBitsAsHint(MCInst *MI, unsigned OpNo, SStream *O)
{
unsigned Code = (unsigned int)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
if (Code == 2) {
SStream_concat0(O, "-");
} else if (Code == 3) {
SStream_concat0(O, "+");
}
}
static void printU1ImmOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
unsigned int Value = (unsigned int)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
// assert(Value <= 1 && "Invalid u1imm argument!");
printUInt32(O, Value);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = Value;
MI->flat_insn->detail->ppc.op_count++;
}
}
static void printU2ImmOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
unsigned int Value = (int)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
//assert(Value <= 3 && "Invalid u2imm argument!");
printUInt32(O, Value);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = Value;
MI->flat_insn->detail->ppc.op_count++;
}
}
static void printU3ImmOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
unsigned int Value = (int)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
//assert(Value <= 8 && "Invalid u3imm argument!");
printUInt32(O, Value);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = Value;
MI->flat_insn->detail->ppc.op_count++;
}
}
static void printU4ImmOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
unsigned int Value = (int)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
//assert(Value <= 15 && "Invalid u4imm argument!");
printUInt32(O, Value);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = Value;
MI->flat_insn->detail->ppc.op_count++;
}
}
static void printS5ImmOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
int Value = (int)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
Value = SignExtend32(Value, 5);
printInt32(O, Value);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = Value;
MI->flat_insn->detail->ppc.op_count++;
}
}
static void printU5ImmOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
unsigned int Value = (unsigned int)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
//assert(Value <= 31 && "Invalid u5imm argument!");
printUInt32(O, Value);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = Value;
MI->flat_insn->detail->ppc.op_count++;
}
}
static void printU6ImmOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
unsigned int Value = (unsigned int)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
//assert(Value <= 63 && "Invalid u6imm argument!");
printUInt32(O, Value);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = Value;
MI->flat_insn->detail->ppc.op_count++;
}
}
static void printU7ImmOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
unsigned int Value = (unsigned int)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
//assert(Value <= 127 && "Invalid u7imm argument!");
printUInt32(O, Value);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = Value;
MI->flat_insn->detail->ppc.op_count++;
}
}
// Operands of BUILD_VECTOR are signed and we use this to print operands
// of XXSPLTIB which are unsigned. So we simply truncate to 8 bits and
// print as unsigned.
static void printU8ImmOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
unsigned int Value = (unsigned int)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
printUInt32(O, Value);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = Value;
MI->flat_insn->detail->ppc.op_count++;
}
}
static void printU10ImmOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
unsigned int Value = (unsigned int)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
//assert(Value <= 1023 && "Invalid u10imm argument!");
printUInt32(O, Value);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = Value;
MI->flat_insn->detail->ppc.op_count++;
}
}
static void printS12ImmOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
if (MCOperand_isImm(MCInst_getOperand(MI, OpNo))) {
int Imm = (int)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
Imm = SignExtend32(Imm, 12);
printInt32(O, Imm);
if (MI->csh->detail) {
if (MI->csh->doing_mem) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].mem.disp = Imm;
} else {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = Imm;
MI->flat_insn->detail->ppc.op_count++;
}
}
} else
printOperand(MI, OpNo, O);
}
static void printU12ImmOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
unsigned short Value = (unsigned short)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
// assert(Value <= 4095 && "Invalid u12imm argument!");
printUInt32(O, Value);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = Value;
MI->flat_insn->detail->ppc.op_count++;
}
}
static void printS16ImmOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
if (MCOperand_isImm(MCInst_getOperand(MI, OpNo))) {
short Imm = (short)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
printInt32(O, Imm);
if (MI->csh->detail) {
if (MI->csh->doing_mem) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].mem.disp = Imm;
} else {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = Imm;
MI->flat_insn->detail->ppc.op_count++;
}
}
} else
printOperand(MI, OpNo, O);
}
static void printU16ImmOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
if (MCOperand_isImm(MCInst_getOperand(MI, OpNo))) {
unsigned short Imm = (unsigned short)MCOperand_getImm(MCInst_getOperand(MI, OpNo));
printUInt32(O, Imm);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = Imm;
MI->flat_insn->detail->ppc.op_count++;
}
} else
printOperand(MI, OpNo, O);
}
static void printBranchOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
if (!MCOperand_isImm(MCInst_getOperand(MI, OpNo))) {
printOperand(MI, OpNo, O);
return;
}
// Branches can take an immediate operand. This is used by the branch
// selection pass to print .+8, an eight byte displacement from the PC.
// O << ".+";
printAbsBranchOperand(MI, OpNo, O);
}
static void printAbsBranchOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
int64_t imm;
if (!MCOperand_isImm(MCInst_getOperand(MI, OpNo))) {
printOperand(MI, OpNo, O);
return;
}
imm = SignExtend32(MCOperand_getImm(MCInst_getOperand(MI, OpNo)) * 4, 32);
//imm = MCOperand_getImm(MCInst_getOperand(MI, OpNo)) * 4;
if (!PPC_abs_branch(MI->csh, MCInst_getOpcode(MI))) {
imm += MI->address;
}
printUInt64(O, imm);
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = imm;
MI->flat_insn->detail->ppc.op_count++;
}
}
static void printcrbitm(MCInst *MI, unsigned OpNo, SStream *O)
{
unsigned RegNo;
unsigned CCReg = MCOperand_getReg(MCInst_getOperand(MI, OpNo));
switch (CCReg) {
default: // llvm_unreachable("Unknown CR register");
case PPC_CR0: RegNo = 0; break;
case PPC_CR1: RegNo = 1; break;
case PPC_CR2: RegNo = 2; break;
case PPC_CR3: RegNo = 3; break;
case PPC_CR4: RegNo = 4; break;
case PPC_CR5: RegNo = 5; break;
case PPC_CR6: RegNo = 6; break;
case PPC_CR7: RegNo = 7; break;
}
printUInt32(O, 0x80 >> RegNo);
}
static void printMemRegImm(MCInst *MI, unsigned OpNo, SStream *O)
{
set_mem_access(MI, true);
printS16ImmOperand(MI, OpNo, O);
SStream_concat0(O, "(");
if (MCOperand_getReg(MCInst_getOperand(MI, OpNo + 1)) == PPC_R0)
SStream_concat0(O, "0");
else
printOperand(MI, OpNo + 1, O);
SStream_concat0(O, ")");
set_mem_access(MI, false);
}
static void printPSMemRegImm(MCInst *MI, unsigned OpNo, SStream *O)
{
set_mem_access(MI, true);
printS12ImmOperand(MI, OpNo, O);
SStream_concat0(O, "(");
printOperand(MI, OpNo + 1, O);
SStream_concat0(O, ")");
set_mem_access(MI, false);
}
static void printMemRegReg(MCInst *MI, unsigned OpNo, SStream *O)
{
// When used as the base register, r0 reads constant zero rather than
// the value contained in the register. For this reason, the darwin
// assembler requires that we print r0 as 0 (no r) when used as the base.
if (MCOperand_getReg(MCInst_getOperand(MI, OpNo)) == PPC_R0)
SStream_concat0(O, "0");
else
printOperand(MI, OpNo, O);
SStream_concat0(O, ", ");
printOperand(MI, OpNo + 1, O);
}
static void printTLSCall(MCInst *MI, unsigned OpNo, SStream *O)
{
set_mem_access(MI, true);
//printBranchOperand(MI, OpNo, O);
// On PPC64, VariantKind is VK_None, but on PPC32, it's VK_PLT, and it must
// come at the _end_ of the expression.
SStream_concat0(O, "(");
printOperand(MI, OpNo + 1, O);
SStream_concat0(O, ")");
set_mem_access(MI, false);
}
/// stripRegisterPrefix - This method strips the character prefix from a
/// register name so that only the number is left. Used by for linux asm.
static char *stripRegisterPrefix(const char *RegName)
{
switch (RegName[0]) {
case 'r':
case 'f':
case 'q': // for QPX
case 'v':
if (RegName[1] == 's')
return cs_strdup(RegName + 2);
return cs_strdup(RegName + 1);
case 'c':
if (RegName[1] == 'r') {
// skip the first 2 letters "cr"
char *name = cs_strdup(RegName + 2);
// also strip the last 2 letters
if(strlen(name) > 2)
name[strlen(name) - 2] = '\0';
return name;
}
}
return cs_strdup(RegName);
}
static void printOperand(MCInst *MI, unsigned OpNo, SStream *O)
{
MCOperand *Op = MCInst_getOperand(MI, OpNo);
if (MCOperand_isReg(Op)) {
unsigned reg = MCOperand_getReg(Op);
#ifndef CAPSTONE_DIET
const char *RegName = getRegisterName(reg);
// printf("reg = %u (%s)\n", reg, RegName);
// convert internal register ID to public register ID
reg = PPC_name_reg(RegName);
// The linux and AIX assembler does not take register prefixes.
if (MI->csh->syntax == CS_OPT_SYNTAX_NOREGNAME) {
char *name = stripRegisterPrefix(RegName);
SStream_concat0(O, name);
cs_mem_free(name);
} else
SStream_concat0(O, RegName);
#endif
if (MI->csh->detail) {
if (MI->csh->doing_mem) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].mem.base = reg;
} else {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_REG;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].reg = reg;
MI->flat_insn->detail->ppc.op_count++;
}
}
return;
}
if (MCOperand_isImm(Op)) {
int32_t imm = (int32_t)MCOperand_getImm(Op);
printInt32(O, imm);
if (MI->csh->detail) {
if (MI->csh->doing_mem) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].mem.disp = (int32_t)imm;
} else {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = imm;
MI->flat_insn->detail->ppc.op_count++;
}
}
}
}
static void op_addImm(MCInst *MI, int v)
{
if (MI->csh->detail) {
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = v;
MI->flat_insn->detail->ppc.op_count++;
}
}
#define PRINT_ALIAS_INSTR
#include "PPCGenRegisterName.inc"
#include "PPCGenAsmWriter.inc"
#endif
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