From 3f722b991fcb33ca21330501960406a8a58e2be2 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Fri, 30 Oct 2009 00:44:55 -0700 Subject: [PATCH] Syscalls: Make system calls access arguments like a stack, not an array. When accessing arguments for a syscall, the position of an argument depends on the policies of the ISA, how much space preceding arguments took up, and the "alignment" of the index for this particular argument into the number of possible storate locations. This change adjusts getSyscallArg to take its index parameter by reference instead of value and to adjust it to point to the possible location of the next argument on the stack, basically just after the current one. This way, the rules for the new argument can be applied locally without knowing about other arguments since those have already been taken into account implicitly. All system calls have also been changed to reflect the new interface. In a number of cases this made the implementation clearer since it encourages arguments to be collected in one place in order and then used as necessary later, as opposed to scattering them throughout the function or using them in place in long expressions. It also discourages using getSyscallArg over and over to retrieve the same value when a temporary would do the job. --- src/arch/alpha/linux/process.cc | 15 ++- src/arch/alpha/process.cc | 4 +- src/arch/alpha/process.hh | 2 +- src/arch/alpha/tru64/process.cc | 41 +++---- src/arch/arm/linux/process.cc | 10 +- src/arch/arm/linux/process.hh | 2 +- src/arch/arm/process.cc | 4 +- src/arch/arm/process.hh | 2 +- src/arch/mips/linux/process.cc | 19 ++-- src/arch/mips/process.cc | 4 +- src/arch/mips/process.hh | 2 +- src/arch/power/linux/process.cc | 7 +- src/arch/power/linux/process.hh | 2 +- src/arch/power/process.cc | 4 +- src/arch/power/process.hh | 2 +- src/arch/sparc/linux/syscalls.cc | 10 +- src/arch/sparc/process.cc | 8 +- src/arch/sparc/process.hh | 4 +- src/arch/sparc/solaris/process.cc | 3 +- src/arch/x86/linux/syscalls.cc | 11 +- src/arch/x86/process.cc | 19 +++- src/arch/x86/process.hh | 5 +- src/kern/tru64/tru64.hh | 77 ++++++++------ src/sim/process.cc | 6 ++ src/sim/process.hh | 4 +- src/sim/syscall_emul.cc | 153 ++++++++++++++++----------- src/sim/syscall_emul.hh | 170 ++++++++++++++++++------------ 27 files changed, 361 insertions(+), 229 deletions(-) diff --git a/src/arch/alpha/linux/process.cc b/src/arch/alpha/linux/process.cc index 0f09e472b..a653d7845 100644 --- a/src/arch/alpha/linux/process.cc +++ b/src/arch/alpha/linux/process.cc @@ -48,7 +48,8 @@ static SyscallReturn unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - TypedBufferArg name(process->getSyscallArg(tc, 0)); + int index = 0; + TypedBufferArg name(process->getSyscallArg(tc, index)); strcpy(name->sysname, "Linux"); strcpy(name->nodename, "m5.eecs.umich.edu"); @@ -67,13 +68,15 @@ static SyscallReturn osf_getsysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - unsigned op = process->getSyscallArg(tc, 0); + int index = 0; + unsigned op = process->getSyscallArg(tc, index); + Addr bufPtr = process->getSyscallArg(tc, index); // unsigned nbytes = process->getSyscallArg(tc, 2); switch (op) { case 45: { // GSI_IEEE_FP_CONTROL - TypedBufferArg fpcr(process->getSyscallArg(tc, 1)); + TypedBufferArg fpcr(bufPtr); // I don't think this exactly matches the HW FPCR *fpcr = 0; fpcr.copyOut(tc->getMemPort()); @@ -94,13 +97,15 @@ static SyscallReturn osf_setsysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - unsigned op = process->getSyscallArg(tc, 0); + int index = 0; + unsigned op = process->getSyscallArg(tc, index); + Addr bufPtr = process->getSyscallArg(tc, index); // unsigned nbytes = process->getSyscallArg(tc, 2); switch (op) { case 14: { // SSI_IEEE_FP_CONTROL - TypedBufferArg fpcr(process->getSyscallArg(tc, 1)); + TypedBufferArg fpcr(bufPtr); // I don't think this exactly matches the HW FPCR fpcr.copyIn(tc->getMemPort()); DPRINTFR(SyscallVerbose, "osf_setsysinfo(SSI_IEEE_FP_CONTROL): " diff --git a/src/arch/alpha/process.cc b/src/arch/alpha/process.cc index 6aad45da8..9d75d5fa1 100644 --- a/src/arch/alpha/process.cc +++ b/src/arch/alpha/process.cc @@ -193,10 +193,10 @@ AlphaLiveProcess::startup() } AlphaISA::IntReg -AlphaLiveProcess::getSyscallArg(ThreadContext *tc, int i) +AlphaLiveProcess::getSyscallArg(ThreadContext *tc, int &i) { assert(i < 6); - return tc->readIntReg(FirstArgumentReg + i); + return tc->readIntReg(FirstArgumentReg + i++); } void diff --git a/src/arch/alpha/process.hh b/src/arch/alpha/process.hh index 6d083c5ac..36b25a48e 100644 --- a/src/arch/alpha/process.hh +++ b/src/arch/alpha/process.hh @@ -44,7 +44,7 @@ class AlphaLiveProcess : public LiveProcess void argsInit(int intSize, int pageSize); public: - AlphaISA::IntReg getSyscallArg(ThreadContext *tc, int i); + AlphaISA::IntReg getSyscallArg(ThreadContext *tc, int &i); void setSyscallArg(ThreadContext *tc, int i, AlphaISA::IntReg val); void setSyscallReturn(ThreadContext *tc, SyscallReturn return_value); }; diff --git a/src/arch/alpha/tru64/process.cc b/src/arch/alpha/tru64/process.cc index 8fa3cdeda..b039fbe19 100644 --- a/src/arch/alpha/tru64/process.cc +++ b/src/arch/alpha/tru64/process.cc @@ -45,7 +45,8 @@ static SyscallReturn unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - TypedBufferArg name(process->getSyscallArg(tc, 0)); + int index = 0; + TypedBufferArg name(process->getSyscallArg(tc, index)); strcpy(name->sysname, "OSF1"); strcpy(name->nodename, "m5.eecs.umich.edu"); @@ -62,35 +63,36 @@ static SyscallReturn getsysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - unsigned op = process->getSyscallArg(tc, 0); - unsigned nbytes = process->getSyscallArg(tc, 2); + int index = 0; + unsigned op = process->getSyscallArg(tc, index); + Addr bufPtr = process->getSyscallArg(tc, index); + unsigned nbytes = process->getSyscallArg(tc, index); switch (op) { case AlphaTru64::GSI_MAX_CPU: { - TypedBufferArg max_cpu(process->getSyscallArg(tc, 1)); + TypedBufferArg max_cpu(bufPtr); *max_cpu = htog((uint32_t)process->numCpus()); max_cpu.copyOut(tc->getMemPort()); return 1; } case AlphaTru64::GSI_CPUS_IN_BOX: { - TypedBufferArg cpus_in_box(process->getSyscallArg(tc, 1)); + TypedBufferArg cpus_in_box(bufPtr); *cpus_in_box = htog((uint32_t)process->numCpus()); cpus_in_box.copyOut(tc->getMemPort()); return 1; } case AlphaTru64::GSI_PHYSMEM: { - TypedBufferArg physmem(process->getSyscallArg(tc, 1)); + TypedBufferArg physmem(bufPtr); *physmem = htog((uint64_t)1024 * 1024); // physical memory in KB physmem.copyOut(tc->getMemPort()); return 1; } case AlphaTru64::GSI_CPU_INFO: { - TypedBufferArg - infop(process->getSyscallArg(tc, 1)); + TypedBufferArg infop(bufPtr); infop->current_cpu = htog(0); infop->cpus_in_box = htog(process->numCpus()); @@ -107,14 +109,14 @@ getsysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, } case AlphaTru64::GSI_PROC_TYPE: { - TypedBufferArg proc_type(process->getSyscallArg(tc, 1)); + TypedBufferArg proc_type(bufPtr); *proc_type = htog((uint64_t)11); proc_type.copyOut(tc->getMemPort()); return 1; } case AlphaTru64::GSI_PLATFORM_NAME: { - BufferArg bufArg(process->getSyscallArg(tc, 1), nbytes); + BufferArg bufArg(bufPtr, nbytes); strncpy((char *)bufArg.bufferPtr(), "COMPAQ Professional Workstation XP1000", nbytes); @@ -123,7 +125,7 @@ getsysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, } case AlphaTru64::GSI_CLK_TCK: { - TypedBufferArg clk_hz(process->getSyscallArg(tc, 1)); + TypedBufferArg clk_hz(bufPtr); *clk_hz = htog((uint64_t)1024); clk_hz.copyOut(tc->getMemPort()); return 1; @@ -142,12 +144,13 @@ static SyscallReturn setsysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - unsigned op = process->getSyscallArg(tc, 0); + int index = 0; + unsigned op = process->getSyscallArg(tc, index); switch (op) { case AlphaTru64::SSI_IEEE_FP_CONTROL: warn("setsysinfo: ignoring ieee_set_fp_control() arg 0x%x\n", - process->getSyscallArg(tc, 1)); + process->getSyscallArg(tc, index)); break; default: @@ -165,17 +168,19 @@ tableFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { using namespace std; - int id = process->getSyscallArg(tc, 0); // table ID - int index = process->getSyscallArg(tc, 1); // index into table + int argIndex = 0; + int id = process->getSyscallArg(tc, argIndex); // table ID + int index = process->getSyscallArg(tc, argIndex); // index into table + Addr bufPtr = process->getSyscallArg(tc, argIndex); // arg 2 is buffer pointer; type depends on table ID - int nel = process->getSyscallArg(tc, 3); // number of elements - int lel = process->getSyscallArg(tc, 4); // expected element size + int nel = process->getSyscallArg(tc, argIndex); // number of elements + int lel = process->getSyscallArg(tc, argIndex); // expected element size switch (id) { case AlphaTru64::TBL_SYSINFO: { if (index != 0 || nel != 1 || lel != sizeof(Tru64::tbl_sysinfo)) return -EINVAL; - TypedBufferArg elp(process->getSyscallArg(tc, 2)); + TypedBufferArg elp(bufPtr); const int clk_hz = one_million; elp->si_user = htog(curTick / (Clock::Frequency / clk_hz)); diff --git a/src/arch/arm/linux/process.cc b/src/arch/arm/linux/process.cc index a7f36e18d..f909d871a 100644 --- a/src/arch/arm/linux/process.cc +++ b/src/arch/arm/linux/process.cc @@ -50,7 +50,8 @@ static SyscallReturn unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - TypedBufferArg name(process->getSyscallArg(tc, 0)); + int index = 0; + TypedBufferArg name(process->getSyscallArg(tc, index)); strcpy(name->sysname, "Linux"); strcpy(name->nodename, "m5.eecs.umich.edu"); @@ -417,7 +418,8 @@ static SyscallReturn setTLSFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - uint32_t tlsPtr = process->getSyscallArg(tc, 0); + int index = 0; + uint32_t tlsPtr = process->getSyscallArg(tc, index); tc->getMemPort()->writeBlob(ArmLinuxProcess::commPage + 0x0ff0, (uint8_t *)&tlsPtr, sizeof(tlsPtr)); @@ -511,12 +513,12 @@ ArmLinuxProcess::startup() } ArmISA::IntReg -ArmLinuxProcess::getSyscallArg(ThreadContext *tc, int i) +ArmLinuxProcess::getSyscallArg(ThreadContext *tc, int &i) { // Linux apparently allows more parameter than the ABI says it should. // This limit may need to be increased even further. assert(i < 6); - return tc->readIntReg(ArgumentReg0 + i); + return tc->readIntReg(ArgumentReg0 + i++); } void diff --git a/src/arch/arm/linux/process.hh b/src/arch/arm/linux/process.hh index 53b3781d2..ab836fab2 100644 --- a/src/arch/arm/linux/process.hh +++ b/src/arch/arm/linux/process.hh @@ -44,7 +44,7 @@ class ArmLinuxProcess : public ArmLiveProcess void startup(); - ArmISA::IntReg getSyscallArg(ThreadContext *tc, int i); + ArmISA::IntReg getSyscallArg(ThreadContext *tc, int &i); void setSyscallArg(ThreadContext *tc, int i, ArmISA::IntReg val); /// The target system's hostname. diff --git a/src/arch/arm/process.cc b/src/arch/arm/process.cc index cd7cc9736..702922a43 100644 --- a/src/arch/arm/process.cc +++ b/src/arch/arm/process.cc @@ -324,10 +324,10 @@ ArmLiveProcess::argsInit(int intSize, int pageSize) } ArmISA::IntReg -ArmLiveProcess::getSyscallArg(ThreadContext *tc, int i) +ArmLiveProcess::getSyscallArg(ThreadContext *tc, int &i) { assert(i < 4); - return tc->readIntReg(ArgumentReg0 + i); + return tc->readIntReg(ArgumentReg0 + i++); } void diff --git a/src/arch/arm/process.hh b/src/arch/arm/process.hh index 8954d3719..f793892d0 100644 --- a/src/arch/arm/process.hh +++ b/src/arch/arm/process.hh @@ -53,7 +53,7 @@ class ArmLiveProcess : public LiveProcess public: void argsInit(int intSize, int pageSize); - ArmISA::IntReg getSyscallArg(ThreadContext *tc, int i); + ArmISA::IntReg getSyscallArg(ThreadContext *tc, int &i); void setSyscallArg(ThreadContext *tc, int i, ArmISA::IntReg val); void setSyscallReturn(ThreadContext *tc, SyscallReturn return_value); }; diff --git a/src/arch/mips/linux/process.cc b/src/arch/mips/linux/process.cc index dde3a4efd..c2a05b73b 100644 --- a/src/arch/mips/linux/process.cc +++ b/src/arch/mips/linux/process.cc @@ -51,7 +51,8 @@ static SyscallReturn unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - TypedBufferArg name(process->getSyscallArg(tc, 0)); + int index = 0; + TypedBufferArg name(process->getSyscallArg(tc, index)); strcpy(name->sysname, "Linux"); strcpy(name->nodename,"m5.eecs.umich.edu"); @@ -70,14 +71,16 @@ static SyscallReturn sys_getsysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - unsigned op = process->getSyscallArg(tc, 0); - // unsigned nbytes = process->getSyscallArg(tc, 2); + int index = 0; + unsigned op = process->getSyscallArg(tc, index); + unsigned bufPtr = process->getSyscallArg(tc, index); + // unsigned nbytes = process->getSyscallArg(tc, index); switch (op) { case 45: { // GSI_IEEE_FP_CONTROL - TypedBufferArg fpcr(process->getSyscallArg(tc, 1)); + TypedBufferArg fpcr(bufPtr); // I don't think this exactly matches the HW FPCR *fpcr = 0; fpcr.copyOut(tc->getMemPort()); @@ -97,15 +100,17 @@ static SyscallReturn sys_setsysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - unsigned op = process->getSyscallArg(tc, 0); - // unsigned nbytes = process->getSyscallArg(tc, 2); + int index = 0; + unsigned op = process->getSyscallArg(tc, index); + Addr bufPtr = process->getSyscallArg(tc, index); + // unsigned nbytes = process->getSyscallArg(tc, index); switch (op) { case 14: { // SSI_IEEE_FP_CONTROL - TypedBufferArg fpcr(process->getSyscallArg(tc, 1)); + TypedBufferArg fpcr(bufPtr); // I don't think this exactly matches the HW FPCR fpcr.copyIn(tc->getMemPort()); DPRINTFR(SyscallVerbose, "sys_setsysinfo(SSI_IEEE_FP_CONTROL): " diff --git a/src/arch/mips/process.cc b/src/arch/mips/process.cc index b9f608922..d96b0c81c 100644 --- a/src/arch/mips/process.cc +++ b/src/arch/mips/process.cc @@ -147,10 +147,10 @@ MipsLiveProcess::argsInit(int intSize, int pageSize) MipsISA::IntReg -MipsLiveProcess::getSyscallArg(ThreadContext *tc, int i) +MipsLiveProcess::getSyscallArg(ThreadContext *tc, int &i) { assert(i < 6); - return tc->readIntReg(FirstArgumentReg + i); + return tc->readIntReg(FirstArgumentReg + i++); } void diff --git a/src/arch/mips/process.hh b/src/arch/mips/process.hh index b8f4de20a..f35ec8554 100644 --- a/src/arch/mips/process.hh +++ b/src/arch/mips/process.hh @@ -50,7 +50,7 @@ class MipsLiveProcess : public LiveProcess void argsInit(int intSize, int pageSize); public: - MipsISA::IntReg getSyscallArg(ThreadContext *tc, int i); + MipsISA::IntReg getSyscallArg(ThreadContext *tc, int &i); void setSyscallArg(ThreadContext *tc, int i, MipsISA::IntReg val); void setSyscallReturn(ThreadContext *tc, SyscallReturn return_value); }; diff --git a/src/arch/power/linux/process.cc b/src/arch/power/linux/process.cc index b03ccfc8c..504d0e334 100644 --- a/src/arch/power/linux/process.cc +++ b/src/arch/power/linux/process.cc @@ -52,7 +52,8 @@ static SyscallReturn unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - TypedBufferArg name(process->getSyscallArg(tc, 0)); + int index = 0; + TypedBufferArg name(process->getSyscallArg(tc, index)); strcpy(name->sysname, "Linux"); strcpy(name->nodename, "m5.eecs.umich.edu"); @@ -437,12 +438,12 @@ PowerLinuxProcess::startup() } PowerISA::IntReg -PowerLinuxProcess::getSyscallArg(ThreadContext *tc, int i) +PowerLinuxProcess::getSyscallArg(ThreadContext *tc, int &i) { // Linux apparently allows more parameter than the ABI says it should. // This limit may need to be increased even further. assert(i < 6); - return tc->readIntReg(ArgumentReg0 + i); + return tc->readIntReg(ArgumentReg0 + i++); } void diff --git a/src/arch/power/linux/process.hh b/src/arch/power/linux/process.hh index 78b0eef7f..db6759a77 100644 --- a/src/arch/power/linux/process.hh +++ b/src/arch/power/linux/process.hh @@ -46,7 +46,7 @@ class PowerLinuxProcess : public PowerLiveProcess void startup(); - PowerISA::IntReg getSyscallArg(ThreadContext *tc, int i); + PowerISA::IntReg getSyscallArg(ThreadContext *tc, int &i); void setSyscallArg(ThreadContext *tc, int i, PowerISA::IntReg val); /// Array of syscall descriptors, indexed by call number. diff --git a/src/arch/power/process.cc b/src/arch/power/process.cc index 8828a1a93..92f993e4c 100644 --- a/src/arch/power/process.cc +++ b/src/arch/power/process.cc @@ -266,10 +266,10 @@ PowerLiveProcess::argsInit(int intSize, int pageSize) } PowerISA::IntReg -PowerLiveProcess::getSyscallArg(ThreadContext *tc, int i) +PowerLiveProcess::getSyscallArg(ThreadContext *tc, int &i) { assert(i < 5); - return tc->readIntReg(ArgumentReg0 + i); + return tc->readIntReg(ArgumentReg0 + i++); } void diff --git a/src/arch/power/process.hh b/src/arch/power/process.hh index dae776c4c..ede75f05f 100644 --- a/src/arch/power/process.hh +++ b/src/arch/power/process.hh @@ -50,7 +50,7 @@ class PowerLiveProcess : public LiveProcess public: void argsInit(int intSize, int pageSize); - PowerISA::IntReg getSyscallArg(ThreadContext *tc, int i); + PowerISA::IntReg getSyscallArg(ThreadContext *tc, int &i); void setSyscallArg(ThreadContext *tc, int i, PowerISA::IntReg val); void setSyscallReturn(ThreadContext *tc, SyscallReturn return_value); }; diff --git a/src/arch/sparc/linux/syscalls.cc b/src/arch/sparc/linux/syscalls.cc index c50803976..874ddc005 100644 --- a/src/arch/sparc/linux/syscalls.cc +++ b/src/arch/sparc/linux/syscalls.cc @@ -41,7 +41,8 @@ static SyscallReturn unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - TypedBufferArg name(process->getSyscallArg(tc, 0)); + int index = 0; + TypedBufferArg name(process->getSyscallArg(tc, index)); strcpy(name->sysname, "Linux"); strcpy(name->nodename, "m5.eecs.umich.edu"); @@ -59,9 +60,10 @@ SyscallReturn getresuidFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { const IntReg id = htog(100); - Addr ruid = p->getSyscallArg(tc, 0); - Addr euid = p->getSyscallArg(tc, 1); - Addr suid = p->getSyscallArg(tc, 2); + int index = 0; + Addr ruid = p->getSyscallArg(tc, index); + Addr euid = p->getSyscallArg(tc, index); + Addr suid = p->getSyscallArg(tc, index); //Handle the EFAULT case //Set the ruid if(ruid) diff --git a/src/arch/sparc/process.cc b/src/arch/sparc/process.cc index 89e853573..7e01f6b07 100644 --- a/src/arch/sparc/process.cc +++ b/src/arch/sparc/process.cc @@ -514,10 +514,10 @@ void Sparc64LiveProcess::flushWindows(ThreadContext *tc) } IntReg -Sparc32LiveProcess::getSyscallArg(ThreadContext *tc, int i) +Sparc32LiveProcess::getSyscallArg(ThreadContext *tc, int &i) { assert(i < 6); - return bits(tc->readIntReg(FirstArgumentReg + i), 31, 0); + return bits(tc->readIntReg(FirstArgumentReg + i++), 31, 0); } void @@ -528,10 +528,10 @@ Sparc32LiveProcess::setSyscallArg(ThreadContext *tc, int i, IntReg val) } IntReg -Sparc64LiveProcess::getSyscallArg(ThreadContext *tc, int i) +Sparc64LiveProcess::getSyscallArg(ThreadContext *tc, int &i) { assert(i < 6); - return tc->readIntReg(FirstArgumentReg + i); + return tc->readIntReg(FirstArgumentReg + i++); } void diff --git a/src/arch/sparc/process.hh b/src/arch/sparc/process.hh index fdb9734ba..cca312e0a 100644 --- a/src/arch/sparc/process.hh +++ b/src/arch/sparc/process.hh @@ -95,7 +95,7 @@ class Sparc32LiveProcess : public SparcLiveProcess void flushWindows(ThreadContext *tc); - SparcISA::IntReg getSyscallArg(ThreadContext *tc, int i); + SparcISA::IntReg getSyscallArg(ThreadContext *tc, int &i); void setSyscallArg(ThreadContext *tc, int i, SparcISA::IntReg val); }; @@ -123,7 +123,7 @@ class Sparc64LiveProcess : public SparcLiveProcess void flushWindows(ThreadContext *tc); - SparcISA::IntReg getSyscallArg(ThreadContext *tc, int i); + SparcISA::IntReg getSyscallArg(ThreadContext *tc, int &i); void setSyscallArg(ThreadContext *tc, int i, SparcISA::IntReg val); }; diff --git a/src/arch/sparc/solaris/process.cc b/src/arch/sparc/solaris/process.cc index eafb488df..24abd8687 100644 --- a/src/arch/sparc/solaris/process.cc +++ b/src/arch/sparc/solaris/process.cc @@ -48,7 +48,8 @@ static SyscallReturn unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - TypedBufferArg name(process->getSyscallArg(tc, 0)); + int index = 0; + TypedBufferArg name(process->getSyscallArg(tc, index)); strcpy(name->sysname, "SunOS"); strcpy(name->nodename, "m5.eecs.umich.edu"); diff --git a/src/arch/x86/linux/syscalls.cc b/src/arch/x86/linux/syscalls.cc index 14b3fa69b..4c29559fb 100644 --- a/src/arch/x86/linux/syscalls.cc +++ b/src/arch/x86/linux/syscalls.cc @@ -68,7 +68,8 @@ static SyscallReturn unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - TypedBufferArg name(process->getSyscallArg(tc, 0)); + int index = 0; + TypedBufferArg name(process->getSyscallArg(tc, index)); strcpy(name->sysname, "Linux"); strcpy(name->nodename, "m5.eecs.umich.edu"); @@ -94,8 +95,9 @@ archPrctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, }; //First argument is the code, second is the address - int code = process->getSyscallArg(tc, 0); - uint64_t addr = process->getSyscallArg(tc, 1); + int index = 0; + int code = process->getSyscallArg(tc, index); + uint64_t addr = process->getSyscallArg(tc, index); uint64_t fsBase, gsBase; TranslatingPort *p = tc->getMemPort(); switch(code) @@ -159,7 +161,8 @@ setThreadArea32Func(SyscallDesc *desc, int callnum, assert((maxTLSEntry + 1) * sizeof(uint64_t) <= x86lp->gdtSize()); - TypedBufferArg userDesc(process->getSyscallArg(tc, 0)); + int argIndex = 0; + TypedBufferArg userDesc(process->getSyscallArg(tc, argIndex)); TypedBufferArg gdt(x86lp->gdtStart() + minTLSEntry * sizeof(uint64_t), numTLSEntries * sizeof(uint64_t)); diff --git a/src/arch/x86/process.cc b/src/arch/x86/process.cc index f7678443d..f7b3ce24a 100644 --- a/src/arch/x86/process.cc +++ b/src/arch/x86/process.cc @@ -698,10 +698,10 @@ X86LiveProcess::setSyscallReturn(ThreadContext *tc, SyscallReturn return_value) } X86ISA::IntReg -X86_64LiveProcess::getSyscallArg(ThreadContext *tc, int i) +X86_64LiveProcess::getSyscallArg(ThreadContext *tc, int &i) { assert(i < NumArgumentRegs); - return tc->readIntReg(ArgumentReg[i]); + return tc->readIntReg(ArgumentReg[i++]); } void @@ -712,10 +712,21 @@ X86_64LiveProcess::setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val) } X86ISA::IntReg -I386LiveProcess::getSyscallArg(ThreadContext *tc, int i) +I386LiveProcess::getSyscallArg(ThreadContext *tc, int &i) { assert(i < NumArgumentRegs32); - return tc->readIntReg(ArgumentReg32[i]); + return tc->readIntReg(ArgumentReg32[i++]); +} + +X86ISA::IntReg +I386LiveProcess::getSyscallArg(ThreadContext *tc, int &i, int width) +{ + assert(width == 32 || width == 64); + assert(i < NumArgumentRegs); + uint64_t retVal = tc->readIntReg(ArgumentReg32[i++]) & mask(32); + if (width == 64) + retVal |= ((uint64_t)tc->readIntReg(ArgumentReg[i++]) << 32); + return retVal; } void diff --git a/src/arch/x86/process.hh b/src/arch/x86/process.hh index cd6d99e66..4d031bd5a 100644 --- a/src/arch/x86/process.hh +++ b/src/arch/x86/process.hh @@ -105,7 +105,7 @@ namespace X86ISA void argsInit(int intSize, int pageSize); void startup(); - X86ISA::IntReg getSyscallArg(ThreadContext *tc, int i); + X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i); void setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val); }; @@ -130,7 +130,8 @@ namespace X86ISA void startup(); void syscall(int64_t callnum, ThreadContext *tc); - X86ISA::IntReg getSyscallArg(ThreadContext *tc, int i); + X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i); + X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i, int width); void setSyscallArg(ThreadContext *tc, int i, X86ISA::IntReg val); }; } diff --git a/src/kern/tru64/tru64.hh b/src/kern/tru64/tru64.hh index c2bdd2776..033f30946 100644 --- a/src/kern/tru64/tru64.hh +++ b/src/kern/tru64/tru64.hh @@ -440,10 +440,11 @@ class Tru64 : public OperatingSystem #ifdef __CYGWIN__ panic("getdirent not implemented on cygwin!"); #else - int fd = process->sim_fd(process->getSyscallArg(tc, 0)); - Addr tgt_buf = process->getSyscallArg(tc, 1); - int tgt_nbytes = process->getSyscallArg(tc, 2); - Addr tgt_basep = process->getSyscallArg(tc, 3); + int index = 0; + int fd = process->sim_fd(process->getSyscallArg(tc, index)); + Addr tgt_buf = process->getSyscallArg(tc, index); + int tgt_nbytes = process->getSyscallArg(tc, index); + Addr tgt_basep = process->getSyscallArg(tc, index); char * const host_buf = new char[tgt_nbytes]; @@ -498,7 +499,8 @@ class Tru64 : public OperatingSystem { using namespace TheISA; - TypedBufferArg sc(process->getSyscallArg(tc, 0)); + int index = 0; + TypedBufferArg sc(process->getSyscallArg(tc, index)); sc.copyIn(tc->getMemPort()); @@ -530,7 +532,8 @@ class Tru64 : public OperatingSystem { using namespace TheISA; - TypedBufferArg argp(process->getSyscallArg(tc, 0)); + int index = 0; + TypedBufferArg argp(process->getSyscallArg(tc, index)); argp.copyIn(tc->getMemPort()); @@ -578,9 +581,10 @@ class Tru64 : public OperatingSystem using namespace std; using namespace TheISA; + int index = 0; TypedBufferArg - attrp(process->getSyscallArg(tc, 0)); - TypedBufferArg configptr_ptr(process->getSyscallArg(tc, 1)); + attrp(process->getSyscallArg(tc, index)); + TypedBufferArg configptr_ptr(process->getSyscallArg(tc, index)); attrp.copyIn(tc->getMemPort()); @@ -712,10 +716,11 @@ class Tru64 : public OperatingSystem using namespace std; using namespace TheISA; + int index = 0; TypedBufferArg - attrp(process->getSyscallArg(tc, 0)); - TypedBufferArg kidp(process->getSyscallArg(tc, 1)); - int thread_index = process->getSyscallArg(tc, 2); + attrp(process->getSyscallArg(tc, index)); + TypedBufferArg kidp(process->getSyscallArg(tc, index)); + int thread_index = process->getSyscallArg(tc, index); // get attribute args attrp.copyIn(tc->getMemPort()); @@ -834,11 +839,12 @@ class Tru64 : public OperatingSystem { using namespace std; - uint64_t tid = process->getSyscallArg(tc, 0); - uint64_t secs = process->getSyscallArg(tc, 1); - uint64_t flags = process->getSyscallArg(tc, 2); - uint64_t action = process->getSyscallArg(tc, 3); - uint64_t usecs = process->getSyscallArg(tc, 4); + int index = 0; + uint64_t tid = process->getSyscallArg(tc, index); + uint64_t secs = process->getSyscallArg(tc, index); + uint64_t flags = process->getSyscallArg(tc, index); + uint64_t action = process->getSyscallArg(tc, index); + uint64_t usecs = process->getSyscallArg(tc, index); cout << tc->getCpuPtr()->name() << ": nxm_thread_block " << tid << " " << secs << " " << flags << " " << action << " " << usecs << endl; @@ -853,11 +859,12 @@ class Tru64 : public OperatingSystem { using namespace std; - Addr uaddr = process->getSyscallArg(tc, 0); - uint64_t val = process->getSyscallArg(tc, 1); - uint64_t secs = process->getSyscallArg(tc, 2); - uint64_t usecs = process->getSyscallArg(tc, 3); - uint64_t flags = process->getSyscallArg(tc, 4); + int index = 0; + Addr uaddr = process->getSyscallArg(tc, index); + uint64_t val = process->getSyscallArg(tc, index); + uint64_t secs = process->getSyscallArg(tc, index); + uint64_t usecs = process->getSyscallArg(tc, index); + uint64_t flags = process->getSyscallArg(tc, index); BaseCPU *cpu = tc->getCpuPtr(); @@ -876,7 +883,8 @@ class Tru64 : public OperatingSystem { using namespace std; - Addr uaddr = process->getSyscallArg(tc, 0); + int index = 0; + Addr uaddr = process->getSyscallArg(tc, index); cout << tc->getCpuPtr()->name() << ": nxm_unblock " << hex << uaddr << dec << endl; @@ -977,7 +985,8 @@ class Tru64 : public OperatingSystem m5_mutex_lockFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - Addr uaddr = process->getSyscallArg(tc, 0); + int index = 0; + Addr uaddr = process->getSyscallArg(tc, index); m5_lock_mutex(uaddr, process, tc); @@ -994,7 +1003,8 @@ class Tru64 : public OperatingSystem { using namespace TheISA; - Addr uaddr = process->getSyscallArg(tc, 0); + int index = 0; + Addr uaddr = process->getSyscallArg(tc, index); TypedBufferArg lockp(uaddr); lockp.copyIn(tc->getMemPort()); @@ -1014,7 +1024,8 @@ class Tru64 : public OperatingSystem m5_mutex_unlockFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - Addr uaddr = process->getSyscallArg(tc, 0); + int index = 0; + Addr uaddr = process->getSyscallArg(tc, index); m5_unlock_mutex(uaddr, process, tc); @@ -1026,7 +1037,8 @@ class Tru64 : public OperatingSystem m5_cond_signalFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - Addr cond_addr = process->getSyscallArg(tc, 0); + int index = 0; + Addr cond_addr = process->getSyscallArg(tc, index); // Wake up one process waiting on the condition variable. activate_waiting_context(cond_addr, process); @@ -1039,7 +1051,8 @@ class Tru64 : public OperatingSystem m5_cond_broadcastFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - Addr cond_addr = process->getSyscallArg(tc, 0); + int index = 0; + Addr cond_addr = process->getSyscallArg(tc, index); activate_waiting_context(cond_addr, process, true); @@ -1053,8 +1066,9 @@ class Tru64 : public OperatingSystem { using namespace TheISA; - Addr cond_addr = process->getSyscallArg(tc, 0); - Addr lock_addr = process->getSyscallArg(tc, 1); + int index = 0; + Addr cond_addr = process->getSyscallArg(tc, index); + Addr lock_addr = process->getSyscallArg(tc, index); TypedBufferArg condp(cond_addr); TypedBufferArg lockp(lock_addr); @@ -1086,10 +1100,11 @@ class Tru64 : public OperatingSystem indirectSyscallFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int new_callnum = process->getSyscallArg(tc, 0); + int index = 0; + int new_callnum = process->getSyscallArg(tc, index); for (int i = 0; i < 5; ++i) - process->setSyscallArg(tc, i, process->getSyscallArg(tc, i+1)); + process->setSyscallArg(tc, i, process->getSyscallArg(tc, index)); SyscallDesc *new_desc = process->getDesc(new_callnum); diff --git a/src/sim/process.cc b/src/sim/process.cc index cf0f2b84d..e71d6441f 100644 --- a/src/sim/process.cc +++ b/src/sim/process.cc @@ -647,6 +647,12 @@ LiveProcess::syscall(int64_t callnum, ThreadContext *tc) desc->doSyscall(callnum, this, tc); } +IntReg +LiveProcess::getSyscallArg(ThreadContext *tc, int &i, int width) +{ + return getSyscallArg(tc, i); +} + LiveProcess * LiveProcess::create(LiveProcessParams * params) { diff --git a/src/sim/process.hh b/src/sim/process.hh index 7922ce073..ab9d64cf3 100644 --- a/src/sim/process.hh +++ b/src/sim/process.hh @@ -325,7 +325,9 @@ class LiveProcess : public Process std::string getcwd() const { return cwd; } virtual void syscall(int64_t callnum, ThreadContext *tc); - virtual TheISA::IntReg getSyscallArg(ThreadContext *tc, int i) = 0; + + virtual TheISA::IntReg getSyscallArg(ThreadContext *tc, int &i) = 0; + virtual TheISA::IntReg getSyscallArg(ThreadContext *tc, int &i, int width); virtual void setSyscallArg(ThreadContext *tc, int i, TheISA::IntReg val) = 0; virtual void setSyscallReturn(ThreadContext *tc, diff --git a/src/sim/syscall_emul.cc b/src/sim/syscall_emul.cc index 13ad04311..d25f7b9fa 100644 --- a/src/sim/syscall_emul.cc +++ b/src/sim/syscall_emul.cc @@ -52,11 +52,14 @@ using namespace TheISA; void SyscallDesc::doSyscall(int callnum, LiveProcess *process, ThreadContext *tc) { + int index = 0; DPRINTFR(SyscallVerbose, "%d: %s: syscall %s called w/arguments %d,%d,%d,%d\n", curTick, tc->getCpuPtr()->name(), name, - process->getSyscallArg(tc, 0), process->getSyscallArg(tc, 1), - process->getSyscallArg(tc, 2), process->getSyscallArg(tc, 3)); + process->getSyscallArg(tc, index), + process->getSyscallArg(tc, index), + process->getSyscallArg(tc, index), + process->getSyscallArg(tc, index)); SyscallReturn retval = (*funcPtr)(this, callnum, process, tc); @@ -82,8 +85,9 @@ SyscallReturn ignoreFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { + int index = 0; warn("ignoring syscall %s(%d, %d, ...)", desc->name, - process->getSyscallArg(tc, 0), process->getSyscallArg(tc, 1)); + process->getSyscallArg(tc, index), process->getSyscallArg(tc, index)); return 0; } @@ -95,8 +99,9 @@ exitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { if (process->system->numRunningContexts() == 1) { // Last running context... exit simulator + int index = 0; exitSimLoop("target called exit()", - process->getSyscallArg(tc, 0) & 0xff); + process->getSyscallArg(tc, index) & 0xff); } else { // other running threads... just halt this one tc->halt(); @@ -112,8 +117,9 @@ exitGroupFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { // really should just halt all thread contexts belonging to this // process in case there's another process running... + int index = 0; exitSimLoop("target called exit()", - process->getSyscallArg(tc, 0) & 0xff); + process->getSyscallArg(tc, index) & 0xff); return 1; } @@ -130,7 +136,8 @@ SyscallReturn brkFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { // change brk addr to first arg - Addr new_brk = p->getSyscallArg(tc, 0); + int index = 0; + Addr new_brk = p->getSyscallArg(tc, index); // in Linux at least, brk(0) returns the current break value // (note that the syscall and the glibc function have different behavior) @@ -174,7 +181,8 @@ brkFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) SyscallReturn closeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { - int target_fd = p->getSyscallArg(tc, 0); + int index = 0; + int target_fd = p->getSyscallArg(tc, index); int status = close(p->sim_fd(target_fd)); if (status >= 0) p->free_fd(target_fd); @@ -185,9 +193,11 @@ closeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) SyscallReturn readFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { - int fd = p->sim_fd(p->getSyscallArg(tc, 0)); - int nbytes = p->getSyscallArg(tc, 2); - BufferArg bufArg(p->getSyscallArg(tc, 1), nbytes); + int index = 0; + int fd = p->sim_fd(p->getSyscallArg(tc, index)); + Addr bufPtr = p->getSyscallArg(tc, index); + int nbytes = p->getSyscallArg(tc, index); + BufferArg bufArg(bufPtr, nbytes); int bytes_read = read(fd, bufArg.bufferPtr(), nbytes); @@ -200,9 +210,11 @@ readFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) SyscallReturn writeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { - int fd = p->sim_fd(p->getSyscallArg(tc, 0)); - int nbytes = p->getSyscallArg(tc, 2); - BufferArg bufArg(p->getSyscallArg(tc, 1), nbytes); + int index = 0; + int fd = p->sim_fd(p->getSyscallArg(tc, index)); + Addr bufPtr = p->getSyscallArg(tc, index); + int nbytes = p->getSyscallArg(tc, index); + BufferArg bufArg(bufPtr, nbytes); bufArg.copyIn(tc->getMemPort()); @@ -217,9 +229,10 @@ writeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) SyscallReturn lseekFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { - int fd = p->sim_fd(p->getSyscallArg(tc, 0)); - uint64_t offs = p->getSyscallArg(tc, 1); - int whence = p->getSyscallArg(tc, 2); + int index = 0; + int fd = p->sim_fd(p->getSyscallArg(tc, index)); + uint64_t offs = p->getSyscallArg(tc, index); + int whence = p->getSyscallArg(tc, index); off_t result = lseek(fd, offs, whence); @@ -230,11 +243,12 @@ lseekFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) SyscallReturn _llseekFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { - int fd = p->sim_fd(p->getSyscallArg(tc, 0)); - uint64_t offset_high = p->getSyscallArg(tc, 1); - uint32_t offset_low = p->getSyscallArg(tc, 2); - Addr result_ptr = p->getSyscallArg(tc, 3); - int whence = p->getSyscallArg(tc, 4); + int index = 0; + int fd = p->sim_fd(p->getSyscallArg(tc, index)); + uint64_t offset_high = p->getSyscallArg(tc, index); + uint32_t offset_low = p->getSyscallArg(tc, index); + Addr result_ptr = p->getSyscallArg(tc, index); + int whence = p->getSyscallArg(tc, index); uint64_t offset = (offset_high << 32) | offset_low; @@ -273,8 +287,10 @@ const char *hostname = "m5.eecs.umich.edu"; SyscallReturn gethostnameFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { - int name_len = p->getSyscallArg(tc, 1); - BufferArg name(p->getSyscallArg(tc, 0), name_len); + int index = 0; + Addr bufPtr = p->getSyscallArg(tc, index); + int name_len = p->getSyscallArg(tc, index); + BufferArg name(bufPtr, name_len); strncpy((char *)name.bufferPtr(), hostname, name_len); @@ -287,8 +303,10 @@ SyscallReturn getcwdFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { int result = 0; - unsigned long size = p->getSyscallArg(tc, 1); - BufferArg buf(p->getSyscallArg(tc, 0), size); + int index; + Addr bufPtr = p->getSyscallArg(tc, index); + unsigned long size = p->getSyscallArg(tc, index); + BufferArg buf(bufPtr, size); // Is current working directory defined? string cwd = p->getcwd(); @@ -320,14 +338,17 @@ readlinkFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { string path; - if (!tc->getMemPort()->tryReadString(path, p->getSyscallArg(tc, 0))) + int index = 0; + if (!tc->getMemPort()->tryReadString(path, p->getSyscallArg(tc, index))) return (TheISA::IntReg)-EFAULT; // Adjust path for current working directory path = p->fullPath(path); - size_t bufsiz = p->getSyscallArg(tc, 2); - BufferArg buf(p->getSyscallArg(tc, 1), bufsiz); + Addr bufPtr = p->getSyscallArg(tc, index); + size_t bufsiz = p->getSyscallArg(tc, index); + + BufferArg buf(bufPtr, bufsiz); int result = readlink(path.c_str(), (char *)buf.bufferPtr(), bufsiz); @@ -341,7 +362,8 @@ unlinkFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { string path; - if (!tc->getMemPort()->tryReadString(path, p->getSyscallArg(tc, 0))) + int index = 0; + if (!tc->getMemPort()->tryReadString(path, p->getSyscallArg(tc, index))) return (TheISA::IntReg)-EFAULT; // Adjust path for current working directory @@ -357,13 +379,14 @@ mkdirFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { string path; - if (!tc->getMemPort()->tryReadString(path, p->getSyscallArg(tc, 0))) + int index = 0; + if (!tc->getMemPort()->tryReadString(path, p->getSyscallArg(tc, index))) return (TheISA::IntReg)-EFAULT; // Adjust path for current working directory path = p->fullPath(path); - mode_t mode = p->getSyscallArg(tc, 1); + mode_t mode = p->getSyscallArg(tc, index); int result = mkdir(path.c_str(), mode); return (result == -1) ? -errno : result; @@ -374,12 +397,13 @@ renameFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { string old_name; - if (!tc->getMemPort()->tryReadString(old_name, p->getSyscallArg(tc, 0))) + int index = 0; + if (!tc->getMemPort()->tryReadString(old_name, p->getSyscallArg(tc, index))) return -EFAULT; string new_name; - if (!tc->getMemPort()->tryReadString(new_name, p->getSyscallArg(tc, 1))) + if (!tc->getMemPort()->tryReadString(new_name, p->getSyscallArg(tc, index))) return -EFAULT; // Adjust path for current working directory @@ -395,10 +419,11 @@ truncateFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { string path; - if (!tc->getMemPort()->tryReadString(path, p->getSyscallArg(tc, 0))) + int index = 0; + if (!tc->getMemPort()->tryReadString(path, p->getSyscallArg(tc, index))) return -EFAULT; - off_t length = p->getSyscallArg(tc, 1); + off_t length = p->getSyscallArg(tc, index); // Adjust path for current working directory path = p->fullPath(path); @@ -411,12 +436,13 @@ SyscallReturn ftruncateFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc) { - int fd = process->sim_fd(process->getSyscallArg(tc, 0)); + int index = 0; + int fd = process->sim_fd(process->getSyscallArg(tc, index)); if (fd < 0) return -EBADF; - off_t length = process->getSyscallArg(tc, 1); + off_t length = process->getSyscallArg(tc, index); int result = ftruncate(fd, length); return (result == -1) ? -errno : result; @@ -426,13 +452,13 @@ SyscallReturn ftruncate64Func(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc) { - int fd = process->sim_fd(process->getSyscallArg(tc, 0)); + int index = 0; + int fd = process->sim_fd(process->getSyscallArg(tc, index)); if (fd < 0) return -EBADF; - // I'm not sure why, but the length argument is in arg reg 3 - loff_t length = process->getSyscallArg(tc, 3); + loff_t length = process->getSyscallArg(tc, index, 64); int result = ftruncate64(fd, length); return (result == -1) ? -errno : result; @@ -454,13 +480,14 @@ chownFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { string path; - if (!tc->getMemPort()->tryReadString(path, p->getSyscallArg(tc, 0))) + int index = 0; + if (!tc->getMemPort()->tryReadString(path, p->getSyscallArg(tc, index))) return -EFAULT; /* XXX endianess */ - uint32_t owner = p->getSyscallArg(tc, 1); + uint32_t owner = p->getSyscallArg(tc, index); uid_t hostOwner = owner; - uint32_t group = p->getSyscallArg(tc, 2); + uint32_t group = p->getSyscallArg(tc, index); gid_t hostGroup = group; // Adjust path for current working directory @@ -473,15 +500,16 @@ chownFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) SyscallReturn fchownFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc) { - int fd = process->sim_fd(process->getSyscallArg(tc, 0)); + int index = 0; + int fd = process->sim_fd(process->getSyscallArg(tc, index)); if (fd < 0) return -EBADF; /* XXX endianess */ - uint32_t owner = process->getSyscallArg(tc, 1); + uint32_t owner = process->getSyscallArg(tc, index); uid_t hostOwner = owner; - uint32_t group = process->getSyscallArg(tc, 2); + uint32_t group = process->getSyscallArg(tc, index); gid_t hostGroup = group; int result = fchown(fd, hostOwner, hostGroup); @@ -492,11 +520,12 @@ fchownFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc) SyscallReturn dupFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc) { - int fd = process->sim_fd(process->getSyscallArg(tc, 0)); + int index = 0; + int fd = process->sim_fd(process->getSyscallArg(tc, index)); if (fd < 0) return -EBADF; - Process::FdMap *fdo = process->sim_fd_obj(process->getSyscallArg(tc, 0)); + Process::FdMap *fdo = process->sim_fd_obj(fd); int result = dup(fd); return (result == -1) ? -errno : @@ -508,12 +537,13 @@ SyscallReturn fcntlFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc) { - int fd = process->getSyscallArg(tc, 0); + int index = 0; + int fd = process->getSyscallArg(tc, index); if (fd < 0 || process->sim_fd(fd) < 0) return -EBADF; - int cmd = process->getSyscallArg(tc, 1); + int cmd = process->getSyscallArg(tc, index); switch (cmd) { case 0: // F_DUPFD // if we really wanted to support this, we'd need to do it @@ -550,12 +580,13 @@ SyscallReturn fcntl64Func(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc) { - int fd = process->getSyscallArg(tc, 0); + int index = 0; + int fd = process->getSyscallArg(tc, index); if (fd < 0 || process->sim_fd(fd) < 0) return -EBADF; - int cmd = process->getSyscallArg(tc, 1); + int cmd = process->getSyscallArg(tc, index); switch (cmd) { case 33: //F_GETLK64 warn("fcntl64(%d, F_GETLK64) not supported, error returned\n", fd); @@ -639,7 +670,8 @@ setuidFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { // can't fathom why a benchmark would call this. - warn("Ignoring call to setuid(%d)\n", process->getSyscallArg(tc, 0)); + int index = 0; + warn("Ignoring call to setuid(%d)\n", process->getSyscallArg(tc, index)); return 0; } @@ -695,17 +727,20 @@ SyscallReturn cloneFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { + int index = 0; + IntReg flags = process->getSyscallArg(tc, index); + IntReg newStack = process->getSyscallArg(tc, index); + DPRINTF(SyscallVerbose, "In sys_clone:\n"); - DPRINTF(SyscallVerbose, " Flags=%llx\n", process->getSyscallArg(tc, 0)); - DPRINTF(SyscallVerbose, " Child stack=%llx\n", - process->getSyscallArg(tc, 1)); + DPRINTF(SyscallVerbose, " Flags=%llx\n", flags); + DPRINTF(SyscallVerbose, " Child stack=%llx\n", newStack); - if (process->getSyscallArg(tc, 0) != 0x10f00) { + if (flags != 0x10f00) { warn("This sys_clone implementation assumes flags " "CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD " "(0x10f00), and may not work correctly with given flags " - "0x%llx\n", process->getSyscallArg(tc, 0)); + "0x%llx\n", flags); } ThreadContext* ctc; // child thread context @@ -738,7 +773,7 @@ cloneFunc(SyscallDesc *desc, int callnum, LiveProcess *process, #endif // Set up stack register - ctc->setIntReg(TheISA::StackPointerReg, process->getSyscallArg(tc, 1)); + ctc->setIntReg(TheISA::StackPointerReg, newStack); // Set up syscall return values in parent and child ctc->setIntReg(ReturnValueReg, 0); // return value, child diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh index 0c51c7dec..8fe53e266 100644 --- a/src/sim/syscall_emul.hh +++ b/src/sim/syscall_emul.hh @@ -481,8 +481,9 @@ SyscallReturn ioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int fd = process->getSyscallArg(tc, 0); - unsigned req = process->getSyscallArg(tc, 1); + int index = 0; + int fd = process->getSyscallArg(tc, index); + unsigned req = process->getSyscallArg(tc, index); DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req); @@ -517,7 +518,9 @@ openFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) + int index = 0; + if (!tc->getMemPort()->tryReadString(path, + process->getSyscallArg(tc, index))) return -EFAULT; if (path == "/dev/sysdev0") { @@ -527,8 +530,8 @@ openFunc(SyscallDesc *desc, int callnum, LiveProcess *process, return -ENOENT; } - int tgtFlags = process->getSyscallArg(tc, 1); - int mode = process->getSyscallArg(tc, 2); + int tgtFlags = process->getSyscallArg(tc, index); + int mode = process->getSyscallArg(tc, index); int hostFlags = 0; // translate open flags @@ -573,14 +576,16 @@ sysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - TypedBufferArg sysinfo(process->getSyscallArg(tc, 0)); + int index = 0; + TypedBufferArg + sysinfo(process->getSyscallArg(tc, index)); - sysinfo->uptime=seconds_since_epoch; - sysinfo->totalram=process->system->memSize(); + sysinfo->uptime=seconds_since_epoch; + sysinfo->totalram=process->system->memSize(); - sysinfo.copyOut(tc->getMemPort()); + sysinfo.copyOut(tc->getMemPort()); - return 0; + return 0; } /// Target chmod() handler. @@ -591,10 +596,13 @@ chmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) + int index = 0; + if (!tc->getMemPort()->tryReadString(path, + process->getSyscallArg(tc, index))) { return -EFAULT; + } - uint32_t mode = process->getSyscallArg(tc, 1); + uint32_t mode = process->getSyscallArg(tc, index); mode_t hostMode = 0; // XXX translate mode flags via OS::something??? @@ -618,13 +626,14 @@ SyscallReturn fchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int fd = process->getSyscallArg(tc, 0); + int index = 0; + int fd = process->getSyscallArg(tc, index); if (fd < 0 || process->sim_fd(fd) < 0) { // doesn't map to any simulator fd: not a valid target fd return -EBADF; } - uint32_t mode = process->getSyscallArg(tc, 1); + uint32_t mode = process->getSyscallArg(tc, index); mode_t hostMode = 0; // XXX translate mode flags via OS::someting??? @@ -643,10 +652,11 @@ template SyscallReturn mremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - Addr start = process->getSyscallArg(tc, 0); - uint64_t old_length = process->getSyscallArg(tc, 1); - uint64_t new_length = process->getSyscallArg(tc, 2); - uint64_t flags = process->getSyscallArg(tc, 3); + int index = 0; + Addr start = process->getSyscallArg(tc, index); + uint64_t old_length = process->getSyscallArg(tc, index); + uint64_t new_length = process->getSyscallArg(tc, index); + uint64_t flags = process->getSyscallArg(tc, index); if ((start % TheISA::VMPageSize != 0) || (new_length % TheISA::VMPageSize != 0)) { @@ -692,8 +702,12 @@ statFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) - return -EFAULT; + int index = 0; + if (!tc->getMemPort()->tryReadString(path, + process->getSyscallArg(tc, index))) { + return -EFAULT; + } + Addr bufPtr = process->getSyscallArg(tc, index); // Adjust path for current working directory path = process->fullPath(path); @@ -704,8 +718,7 @@ statFunc(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - copyOutStatBuf(tc->getMemPort(), process->getSyscallArg(tc, 1), - &hostBuf); + copyOutStatBuf(tc->getMemPort(), bufPtr, &hostBuf); return 0; } @@ -719,8 +732,11 @@ stat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) + int index = 0; + if (!tc->getMemPort()->tryReadString(path, + process->getSyscallArg(tc, index))) return -EFAULT; + Addr bufPtr = process->getSyscallArg(tc, index); // Adjust path for current working directory path = process->fullPath(path); @@ -736,8 +752,7 @@ stat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - copyOutStat64Buf(tc->getMemPort(), process->getSyscallArg(tc, 1), - &hostBuf); + copyOutStat64Buf(tc->getMemPort(), bufPtr, &hostBuf); return 0; } @@ -749,7 +764,9 @@ SyscallReturn fstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int fd = process->getSyscallArg(tc, 0); + int index = 0; + int fd = process->getSyscallArg(tc, index); + Addr bufPtr = process->getSyscallArg(tc, index); if (fd < 0 || process->sim_fd(fd) < 0) { // doesn't map to any simulator fd: not a valid target fd return -EBADF; @@ -766,8 +783,7 @@ fstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - copyOutStat64Buf(tc->getMemPort(), process->getSyscallArg(tc, 1), - &hostBuf, (fd == 1)); + copyOutStat64Buf(tc->getMemPort(), bufPtr, &hostBuf, (fd == 1)); return 0; } @@ -781,8 +797,12 @@ lstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) - return -EFAULT; + int index = 0; + if (!tc->getMemPort()->tryReadString(path, + process->getSyscallArg(tc, index))) { + return -EFAULT; + } + Addr bufPtr = process->getSyscallArg(tc, index); // Adjust path for current working directory path = process->fullPath(path); @@ -793,8 +813,7 @@ lstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - copyOutStatBuf(tc->getMemPort(), process->getSyscallArg(tc, 1), - &hostBuf); + copyOutStatBuf(tc->getMemPort(), bufPtr, &hostBuf); return 0; } @@ -807,8 +826,12 @@ lstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) - return -EFAULT; + int index = 0; + if (!tc->getMemPort()->tryReadString(path, + process->getSyscallArg(tc, index))) { + return -EFAULT; + } + Addr bufPtr = process->getSyscallArg(tc, index); // Adjust path for current working directory path = process->fullPath(path); @@ -824,8 +847,7 @@ lstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - copyOutStat64Buf(tc->getMemPort(), process->getSyscallArg(tc, 1), - &hostBuf); + copyOutStat64Buf(tc->getMemPort(), bufPtr, &hostBuf); return 0; } @@ -836,7 +858,9 @@ SyscallReturn fstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int fd = process->sim_fd(process->getSyscallArg(tc, 0)); + int index = 0; + int fd = process->sim_fd(process->getSyscallArg(tc, index)); + Addr bufPtr = process->getSyscallArg(tc, index); DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd); @@ -849,8 +873,7 @@ fstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - copyOutStatBuf(tc->getMemPort(), process->getSyscallArg(tc, 1), - &hostBuf, (fd == 1)); + copyOutStatBuf(tc->getMemPort(), bufPtr, &hostBuf, (fd == 1)); return 0; } @@ -864,8 +887,12 @@ statfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) - return -EFAULT; + int index = 0; + if (!tc->getMemPort()->tryReadString(path, + process->getSyscallArg(tc, index))) { + return -EFAULT; + } + Addr bufPtr = process->getSyscallArg(tc, index); // Adjust path for current working directory path = process->fullPath(path); @@ -876,8 +903,7 @@ statfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - OS::copyOutStatfsBuf(tc->getMemPort(), - (Addr)(process->getSyscallArg(tc, 1)), &hostBuf); + OS::copyOutStatfsBuf(tc->getMemPort(), bufPtr, &hostBuf); return 0; } @@ -889,7 +915,9 @@ SyscallReturn fstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int fd = process->sim_fd(process->getSyscallArg(tc, 0)); + int index = 0; + int fd = process->sim_fd(process->getSyscallArg(tc, index)); + Addr bufPtr = process->getSyscallArg(tc, index); if (fd < 0) return -EBADF; @@ -900,8 +928,7 @@ fstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - OS::copyOutStatfsBuf(tc->getMemPort(), process->getSyscallArg(tc, 1), - &hostBuf); + OS::copyOutStatfsBuf(tc->getMemPort(), bufPtr, &hostBuf); return 0; } @@ -913,15 +940,16 @@ SyscallReturn writevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int fd = process->getSyscallArg(tc, 0); + int index = 0; + int fd = process->getSyscallArg(tc, index); if (fd < 0 || process->sim_fd(fd) < 0) { // doesn't map to any simulator fd: not a valid target fd return -EBADF; } TranslatingPort *p = tc->getMemPort(); - uint64_t tiov_base = process->getSyscallArg(tc, 1); - size_t count = process->getSyscallArg(tc, 2); + uint64_t tiov_base = process->getSyscallArg(tc, index); + size_t count = process->getSyscallArg(tc, index); struct iovec hiov[count]; for (size_t i = 0; i < count; ++i) { typename OS::tgt_iovec tiov; @@ -962,12 +990,13 @@ template SyscallReturn mmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { - Addr start = p->getSyscallArg(tc, 0); - uint64_t length = p->getSyscallArg(tc, 1); - // int prot = p->getSyscallArg(tc, 2); - int flags = p->getSyscallArg(tc, 3); - // int fd = p->sim_fd(p->getSyscallArg(tc, 4)); - // int offset = p->getSyscallArg(tc, 5); + int index = 0; + Addr start = p->getSyscallArg(tc, index); + uint64_t length = p->getSyscallArg(tc, index); + index++; // int prot = p->getSyscallArg(tc, index); + int flags = p->getSyscallArg(tc, index); + int fd = p->sim_fd(p->getSyscallArg(tc, index)); + // int offset = p->getSyscallArg(tc, index); if ((start % TheISA::VMPageSize) != 0 || @@ -995,7 +1024,7 @@ mmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) if (!(flags & OS::TGT_MAP_ANONYMOUS)) { warn("allowing mmap of file @ fd %d. " - "This will break if not /dev/zero.", p->getSyscallArg(tc, 4)); + "This will break if not /dev/zero.", fd); } return start; @@ -1007,8 +1036,9 @@ SyscallReturn getrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - unsigned resource = process->getSyscallArg(tc, 0); - TypedBufferArg rlp(process->getSyscallArg(tc, 1)); + int index = 0; + unsigned resource = process->getSyscallArg(tc, index); + TypedBufferArg rlp(process->getSyscallArg(tc, index)); switch (resource) { case OS::TGT_RLIMIT_STACK: @@ -1042,7 +1072,8 @@ SyscallReturn gettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - TypedBufferArg tp(process->getSyscallArg(tc, 0)); + int index = 0; + TypedBufferArg tp(process->getSyscallArg(tc, index)); getElapsedTime(tp->tv_sec, tp->tv_usec); tp->tv_sec += seconds_since_epoch; @@ -1063,10 +1094,14 @@ utimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) - return -EFAULT; + int index = 0; + if (!tc->getMemPort()->tryReadString(path, + process->getSyscallArg(tc, index))) { + return -EFAULT; + } - TypedBufferArg tp(process->getSyscallArg(tc, 1)); + TypedBufferArg + tp(process->getSyscallArg(tc, index)); tp.copyIn(tc->getMemPort()); struct timeval hostTimeval[2]; @@ -1092,8 +1127,9 @@ SyscallReturn getrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int who = process->getSyscallArg(tc, 0); // THREAD, SELF, or CHILDREN - TypedBufferArg rup(process->getSyscallArg(tc, 1)); + int index = 0; + int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN + TypedBufferArg rup(process->getSyscallArg(tc, index)); rup->ru_utime.tv_sec = 0; rup->ru_utime.tv_usec = 0; @@ -1143,7 +1179,8 @@ SyscallReturn timesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - TypedBufferArg bufp(process->getSyscallArg(tc, 0)); + int index = 0; + TypedBufferArg bufp(process->getSyscallArg(tc, index)); // Fill in the time structure (in clocks) int64_t clocks = curTick * OS::_SC_CLK_TCK / Clock::Int::s; @@ -1172,7 +1209,8 @@ timeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, getElapsedTime(sec, usec); sec += seconds_since_epoch; - Addr taddr = (Addr)process->getSyscallArg(tc, 0); + int index = 0; + Addr taddr = (Addr)process->getSyscallArg(tc, index); if(taddr != 0) { typename OS::time_t t = sec; t = htog(t);