--- /dev/null
+/*
+ * Copyright (c) 2007 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#include <iostream>
+#include <errno.h>
+#include <sys/ptrace.h>
+#include <stdint.h>
+
+#include "tracechild_amd64.hh"
+
+using namespace std;
+
+char * AMD64TraceChild::regNames[numregs] = {
+ //GPRs
+ "rax", "rbx", "rcx", "rdx",
+ //Index registers
+ "rsi", "rdi",
+ //Base pointer and stack pointer
+ "rbp", "rsp",
+ //New 64 bit mode registers
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ //Segmentation registers
+ "cs", "ds", "es", "fs", "gs", "ss", "fs_base", "gs_base",
+ //PC
+ "rip",
+ //Flags
+ "eflags"};
+
+bool AMD64TraceChild::sendState(int socket)
+{
+ uint64_t regVal = 0;
+ for(int x = 0; x <= R15; x++)
+ {
+ regVal = getRegVal(x);
+ if(write(socket, ®Val, sizeof(regVal)) == -1)
+ {
+ cerr << "Write failed! " << strerror(errno) << endl;
+ tracing = false;
+ return false;
+ }
+ }
+ regVal = getRegVal(RIP);
+ if(write(socket, ®Val, sizeof(regVal)) == -1)
+ {
+ cerr << "Write failed! " << strerror(errno) << endl;
+ tracing = false;
+ return false;
+ }
+ return true;
+}
+
+int64_t AMD64TraceChild::getRegs(user_regs_struct & myregs, int num)
+{
+ assert(num < numregs && num >= 0);
+ switch(num)
+ {
+ //GPRs
+ case RAX: return myregs.rax;
+ case RBX: return myregs.rbx;
+ case RCX: return myregs.rcx;
+ case RDX: return myregs.rdx;
+ //Index registers
+ case RSI: return myregs.rsi;
+ case RDI: return myregs.rdi;
+ //Base pointer and stack pointer
+ case RBP: return myregs.rbp;
+ case RSP: return myregs.rsp;
+ //New 64 bit mode registers
+ case R8: return myregs.r8;
+ case R9: return myregs.r9;
+ case R10: return myregs.r10;
+ case R11: return myregs.r11;
+ case R12: return myregs.r12;
+ case R13: return myregs.r13;
+ case R14: return myregs.r14;
+ case R15: return myregs.r15;
+ //Segmentation registers
+ case CS: return myregs.cs;
+ case DS: return myregs.ds;
+ case ES: return myregs.es;
+ case FS: return myregs.fs;
+ case GS: return myregs.gs;
+ case SS: return myregs.ss;
+ case FS_BASE: return myregs.fs_base;
+ case GS_BASE: return myregs.gs_base;
+ //PC
+ case RIP: return myregs.rip;
+ //Flags
+ case EFLAGS: return myregs.eflags;
+ default:
+ assert(0);
+ return 0;
+ }
+}
+
+bool AMD64TraceChild::update(int pid)
+{
+ oldregs = regs;
+ if(ptrace(PTRACE_GETREGS, pid, 0, ®s) != 0)
+ {
+ cerr << "update: " << strerror(errno) << endl;
+ return false;
+ }
+ for(unsigned int x = 0; x < numregs; x++)
+ regDiffSinceUpdate[x] = (getRegVal(x) != getOldRegVal(x));
+ return true;
+}
+
+AMD64TraceChild::AMD64TraceChild()
+{
+ for(unsigned int x = 0; x < numregs; x++)
+ regDiffSinceUpdate[x] = false;
+}
+
+int64_t AMD64TraceChild::getRegVal(int num)
+{
+ return getRegs(regs, num);
+}
+
+int64_t AMD64TraceChild::getOldRegVal(int num)
+{
+ return getRegs(oldregs, num);
+}
+
+char * AMD64TraceChild::printReg(int num)
+{
+ sprintf(printBuffer, "0x%08X", getRegVal(num));
+ return printBuffer;
+}
+
+ostream & AMD64TraceChild::outputStartState(ostream & os)
+{
+ uint64_t sp = getSP();
+ uint64_t pc = getPC();
+ char obuf[1024];
+ sprintf(obuf, "Initial stack pointer = 0x%016llx\n", sp);
+ os << obuf;
+ sprintf(obuf, "Initial program counter = 0x%016llx\n", pc);
+ os << obuf;
+
+ //Output the argument count
+ uint64_t cargc = ptrace(PTRACE_PEEKDATA, pid, sp, 0);
+ sprintf(obuf, "0x%016llx: Argc = 0x%016llx\n", sp, cargc);
+ os << obuf;
+ sp += 8;
+
+ //Output argv pointers
+ int argCount = 0;
+ uint64_t cargv;
+ do
+ {
+ cargv = ptrace(PTRACE_PEEKDATA, pid, sp, 0);
+ sprintf(obuf, "0x%016llx: argv[%d] = 0x%016llx\n",
+ sp, argCount++, cargv);
+ os << obuf;
+ sp += 8;
+ } while(cargv);
+
+ //Output the envp pointers
+ int envCount = 0;
+ uint64_t cenvp;
+ do
+ {
+ cenvp = ptrace(PTRACE_PEEKDATA, pid, sp, 0);
+ sprintf(obuf, "0x%016llx: envp[%d] = 0x%016llx\n",
+ sp, envCount++, cenvp);
+ os << obuf;
+ sp += 8;
+ } while(cenvp);
+ uint64_t auxType, auxVal;
+ do
+ {
+ auxType = ptrace(PTRACE_PEEKDATA, pid, sp, 0);
+ sp += 8;
+ auxVal = ptrace(PTRACE_PEEKDATA, pid, sp, 0);
+ sp += 8;
+ sprintf(obuf, "0x%016llx: Auxiliary vector = {0x%016llx, 0x%016llx}\n",
+ sp - 8, auxType, auxVal);
+ os << obuf;
+ } while(auxType != 0 || auxVal != 0);
+ //Print out the argument strings, environment strings, and file name.
+ string current;
+ uint64_t buf;
+ uint64_t currentStart = sp;
+ bool clearedInitialPadding = false;
+ do
+ {
+ buf = ptrace(PTRACE_PEEKDATA, pid, sp, 0);
+ char * cbuf = (char *)&buf;
+ for(int x = 0; x < sizeof(uint64_t); x++)
+ {
+ if(cbuf[x])
+ current += cbuf[x];
+ else
+ {
+ sprintf(obuf, "0x%016llx: \"%s\"\n",
+ currentStart, current.c_str());
+ os << obuf;
+ current = "";
+ currentStart = sp + x + 1;
+ }
+ }
+ sp += 8;
+ clearedInitialPadding = clearedInitialPadding || buf != 0;
+ } while(!clearedInitialPadding || buf != 0);
+ return os;
+}
+
+TraceChild * genTraceChild()
+{
+ return new AMD64TraceChild;
+}
--- /dev/null
+/*
+ * Copyright (c) 2007 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#ifndef REGSTATE_AMD64_HH
+#define REGSTATE_AMD64_HH
+
+#include <sys/user.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <assert.h>
+#include <string>
+
+#include "tracechild.hh"
+
+class AMD64TraceChild : public TraceChild
+{
+ public:
+ enum RegNum
+ {
+ //GPRs
+ RAX, RCX, RDX, RBX,
+ //Base pointer and stack pointer
+ RSP, RBP,
+ //Index registers
+ RSI, RDI,
+ //New 64 bit mode registers
+ R8, R9, R10, R11, R12, R13, R14, R15,
+ //Segmentation registers
+ CS, DS, ES, FS, GS, SS, FS_BASE, GS_BASE,
+ //PC
+ RIP,
+ //Flags
+ EFLAGS,
+ numregs
+ };
+ private:
+ char printBuffer [256];
+ static char * regNames[numregs];
+ int64_t getRegs(user_regs_struct & myregs, int num);
+ user_regs_struct regs;
+ user_regs_struct oldregs;
+ bool regDiffSinceUpdate[numregs];
+
+ protected:
+ bool update(int pid);
+
+ public:
+
+ AMD64TraceChild();
+
+ bool sendState(int socket);
+
+ int getNumRegs()
+ {
+ return numregs;
+ }
+
+ bool diffSinceUpdate(int num)
+ {
+ assert(num < numregs && num >= 0);
+ return regDiffSinceUpdate[num];
+ }
+
+ std::string getRegName(int num)
+ {
+ assert(num < numregs && num >= 0);
+ return regNames[num];
+ }
+
+ int64_t getRegVal(int num);
+ int64_t getOldRegVal(int num);
+ uint64_t getPC() {return getRegVal(RIP);}
+ uint64_t getSP() {return getRegVal(RSP);}
+ std::ostream & outputStartState(std::ostream & output);
+
+ char * printReg(int num);
+};
+
+#endif
projects / gem5.git / commitdiff