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31 #ifndef __ARCH_SPARC_SYSCALLRETURN_HH__
32 #define __ARCH_SPARC_SYSCALLRETURN_HH__
36 #include "arch/sparc/regfile.hh"
42 SyscallReturn(T v, bool s)
57 SyscallReturn& operator=(const SyscallReturn& s)
64 bool successful() { return success; }
65 uint64_t value() { return retval; }
74 static inline void setSyscallReturn(SyscallReturn return_value,
77 // check for error condition. SPARC syscall convention is to
78 // indicate success/failure in reg the carry bit of the ccr
79 // and put the return value itself in the standard return value reg ().
80 if (return_value.successful()) {
81 // no error, clear XCC.C
82 regs->setMiscReg(MISCREG_CCR, regs->readMiscReg(MISCREG_CCR) & 0xEE);
83 regs->setIntReg(ReturnValueReg, return_value.value());
85 // got an error, set XCC.C
86 regs->setMiscReg(MISCREG_CCR, regs->readMiscReg(MISCREG_CCR) | 0x11);
87 regs->setIntReg(ReturnValueReg, return_value.value());