diff options
| -rw-r--r-- | src/arch/sparc/linux/process.cc | 2 | ||||
| -rw-r--r-- | src/sim/syscall_emul.cc | 33 | ||||
| -rw-r--r-- | src/sim/syscall_emul.hh | 4 |
3 files changed, 38 insertions, 1 deletions
diff --git a/src/arch/sparc/linux/process.cc b/src/arch/sparc/linux/process.cc index 9c7c0e643..10cde3af8 100644 --- a/src/arch/sparc/linux/process.cc +++ b/src/arch/sparc/linux/process.cc @@ -333,7 +333,7 @@ SyscallDesc SparcLinuxProcess::syscallDescs[] = { /* 233 */ SyscallDesc("stime", unimplementedFunc), /* 234 */ SyscallDesc("statfs64", unimplementedFunc), /* 235 */ SyscallDesc("fstatfs64", unimplementedFunc), - /* 236 */ SyscallDesc("_llseek", unimplementedFunc), + /* 236 */ SyscallDesc("_llseek", _llseekFunc), /* 237 */ SyscallDesc("mlock", unimplementedFunc), /* 238 */ SyscallDesc("munlock", unimplementedFunc), /* 239 */ SyscallDesc("mlockall", unimplementedFunc), diff --git a/src/sim/syscall_emul.cc b/src/sim/syscall_emul.cc index ab44c0a35..876f39e99 100644 --- a/src/sim/syscall_emul.cc +++ b/src/sim/syscall_emul.cc @@ -184,6 +184,39 @@ lseekFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) SyscallReturn +_llseekFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) +{ + int fd = p->sim_fd(tc->getSyscallArg(0)); + uint64_t offset_high = tc->getSyscallArg(1); + uint32_t offset_low = tc->getSyscallArg(2); + Addr result_ptr = tc->getSyscallArg(3); + int whence = tc->getSyscallArg(4); + + uint64_t offset = (offset_high << 32) | offset_low; + + uint64_t result = lseek(fd, offset, whence); + result = TheISA::htog(result); + + if (result == (off_t)-1) { + //The seek failed. + return -errno; + } else { + //The seek succeeded. + //Copy "result" to "result_ptr" + //XXX We'll assume that the size of loff_t is 64 bits on the + //target platform + BufferArg result_buf(result_ptr, sizeof(result)); + memcpy(result_buf.bufferPtr(), &result, sizeof(result)); + result_buf.copyOut(tc->getMemPort()); + return 0; + } + + + return (result == (off_t)-1) ? -errno : result; +} + + +SyscallReturn munmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { // given that we don't really implement mmap, munmap is really easy diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh index f57bd5272..5ca2f6be5 100644 --- a/src/sim/syscall_emul.hh +++ b/src/sim/syscall_emul.hh @@ -211,6 +211,10 @@ SyscallReturn writeFunc(SyscallDesc *desc, int num, SyscallReturn lseekFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc); +/// Target _llseek() handler. +SyscallReturn _llseekFunc(SyscallDesc *desc, int num, + LiveProcess *p, ThreadContext *tc); + /// Target munmap() handler. SyscallReturn munmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc); |