/* 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),
}
+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)
{
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);