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Fixes for Linux syscall emulation.

Browse source 
arch/alpha/alpha_linux_process.cc:
    Fixes for Linux emulation:
    - stat struct alignment
    - osf_{get,set}sysinfo return values
    - additional syscall numbers
    - initialize $r0 to 0
sim/syscall_emul.cc:
    brk(0) just returns brk value (don't update it!)

--HG--
extra : convert_revision : 78e22458321c81e81540d101c9e65e2e4b0ad117
This commit is contained in:
Steve Reinhardt 2004-02-10 21:43:57 -08:00
parent f1aca5e6c5
commit d38f995aee
2 changed files with 40 additions and 5 deletions
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41
arch/alpha/alpha_linux_process.cc
View file

@ -106,6 +106,7 @@ class Linux {
uint32_t st_uid; //!< owner's user ID
uint32_t st_gid; //!< owner's group ID
uint32_t st_rdev; //!< device number
int32_t _pad1; //!< for alignment
int64_t st_size; //!< file size in bytes
uint64_t st_atimeX; //!< time of last access
uint64_t st_mtimeX; //!< time of last modification
@ -264,7 +265,7 @@ class Linux {
// I don't think this exactly matches the HW FPCR
*fpcr = 0;
fpcr.copyOut(xc->mem);
return 1;
return 0;
}
default:
@ -273,7 +274,7 @@ class Linux {
break;
}
return 0;
return 1;
}
/// Target osf_setsysinfo() handler.
@ -292,7 +293,7 @@ class Linux {
fpcr.copyIn(xc->mem);
DPRINTFR(SyscallVerbose, "osf_setsysinfo(SSI_IEEE_FP_CONTROL): "
" setting FPCR to 0x%x\n", *(uint64_t*)fpcr);
return 1;
return 0;
}
default:
@ -301,7 +302,7 @@ class Linux {
break;
}
return 0;
return 1;
}
/// Target fnctl() handler.
@ -810,6 +811,37 @@ SyscallDesc Linux::syscallDescs[] = {
/* 391 */ SyscallDesc("removexattr", unimplementedFunc),
/* 392 */ SyscallDesc("lremovexattr", unimplementedFunc),
/* 393 */ SyscallDesc("fremovexattr", unimplementedFunc),
/* 394 */ SyscallDesc("futex", unimplementedFunc),
/* 395 */ SyscallDesc("sched_setaffinity", unimplementedFunc),
/* 396 */ SyscallDesc("sched_getaffinity", unimplementedFunc),
/* 397 */ SyscallDesc("tuxcall", unimplementedFunc),
/* 398 */ SyscallDesc("io_setup", unimplementedFunc),
/* 399 */ SyscallDesc("io_destroy", unimplementedFunc),
/* 400 */ SyscallDesc("io_getevents", unimplementedFunc),
/* 401 */ SyscallDesc("io_submit", unimplementedFunc),
/* 402 */ SyscallDesc("io_cancel", unimplementedFunc),
/* 403 */ SyscallDesc("unknown #403", unimplementedFunc),
/* 404 */ SyscallDesc("unknown #404", unimplementedFunc),
/* 405 */ SyscallDesc("exit_group", exitFunc), // exit all threads...
/* 406 */ SyscallDesc("lookup_dcookie", unimplementedFunc),
/* 407 */ SyscallDesc("sys_epoll_create", unimplementedFunc),
/* 408 */ SyscallDesc("sys_epoll_ctl", unimplementedFunc),
/* 409 */ SyscallDesc("sys_epoll_wait", unimplementedFunc),
/* 410 */ SyscallDesc("remap_file_pages", unimplementedFunc),
/* 411 */ SyscallDesc("set_tid_address", unimplementedFunc),
/* 412 */ SyscallDesc("restart_syscall", unimplementedFunc),
/* 413 */ SyscallDesc("fadvise64", unimplementedFunc),
/* 414 */ SyscallDesc("timer_create", unimplementedFunc),
/* 415 */ SyscallDesc("timer_settime", unimplementedFunc),
/* 416 */ SyscallDesc("timer_gettime", unimplementedFunc),
/* 417 */ SyscallDesc("timer_getoverrun", unimplementedFunc),
/* 418 */ SyscallDesc("timer_delete", unimplementedFunc),
/* 419 */ SyscallDesc("clock_settime", unimplementedFunc),
/* 420 */ SyscallDesc("clock_gettime", unimplementedFunc),
/* 421 */ SyscallDesc("clock_getres", unimplementedFunc),
/* 422 */ SyscallDesc("clock_nanosleep", unimplementedFunc),
/* 423 */ SyscallDesc("semtimedop", unimplementedFunc),
/* 424 */ SyscallDesc("tgkill", unimplementedFunc)
};
const int Linux::Num_Syscall_Descs =
@ -838,4 +870,5 @@ AlphaLinuxProcess::AlphaLinuxProcess(const std::string &name,
std::vector<std::string> &envp)
: LiveProcess(name, objFile, stdin_fd, stdout_fd, stderr_fd, argv, envp)
{
init_regs->intRegFile[0] = 0;
}

4
sim/syscall_emul.cc
View file

@ -104,7 +104,9 @@ int
obreakFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
{
// change brk addr to first arg
p->brk_point = xc->getSyscallArg(0);
Addr new_brk = xc->getSyscallArg(0);
if (new_brk != 0)
p->brk_point = xc->getSyscallArg(0);
return p->brk_point;
}