diff options
Diffstat (limited to 'src/arch/x86')
| -rw-r--r-- | src/arch/x86/isa_traits.hh | 17 | ||||
| -rw-r--r-- | src/arch/x86/process.cc | 5 |
2 files changed, 14 insertions, 8 deletions
diff --git a/src/arch/x86/isa_traits.hh b/src/arch/x86/isa_traits.hh index 4c02ee35e..63bcfead9 100644 --- a/src/arch/x86/isa_traits.hh +++ b/src/arch/x86/isa_traits.hh @@ -99,12 +99,17 @@ namespace X86ISA const int ReturnAddressReg = 0; const int ReturnValueReg = INTREG_RAX; const int FramePointerReg = INTREG_RBP; - const int ArgumentReg0 = INTREG_RDI; - const int ArgumentReg1 = INTREG_RSI; - const int ArgumentReg2 = INTREG_RDX; - const int ArgumentReg3 = INTREG_RCX; - const int ArgumentReg4 = INTREG_R8W; - const int ArgumentReg5 = INTREG_R9W; + const int ArgumentReg[] = { + INTREG_RDI, + INTREG_RSI, + INTREG_RDX, + //This argument register is r10 for syscalls and rcx for C. + INTREG_R10W, + //INTREG_RCX, + INTREG_R8W, + INTREG_R9W + }; + const int NumArgumentRegs = sizeof(ArgumentReg) / sizeof(const int); // Some OS syscalls use a second register (rdx) to return a second // value diff --git a/src/arch/x86/process.cc b/src/arch/x86/process.cc index 7deb54945..09962fdb6 100644 --- a/src/arch/x86/process.cc +++ b/src/arch/x86/process.cc @@ -338,8 +338,9 @@ X86LiveProcess::argsInit(int intSize, int pageSize) initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize); //Set up the thread context to start running the process - threadContexts[0]->setIntReg(ArgumentReg0, argc); - threadContexts[0]->setIntReg(ArgumentReg1, argv_array_base); + assert(NumArgumentRegs >= 2); + threadContexts[0]->setIntReg(ArgumentReg[0], argc); + threadContexts[0]->setIntReg(ArgumentReg[1], argv_array_base); threadContexts[0]->setIntReg(StackPointerReg, stack_min); Addr prog_entry = objFile->entryPoint(); |