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| author | Tom Musta <tommusta@gmail.com> | 2014-08-12 13:53:42 -0500 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2014-08-22 15:06:35 +0300 |
| commit | 6f6a40328b6f4679082583c2b3a949cda451a991 (patch) | |
| tree | 90c90e80f2bfa3a2bade02ffbdd97a667940fbd3 /linux-user/syscall.c | |
| parent | 8fbe8fdfbc7576c58c59b605354457cc02076304 (diff) | |
| download | hqemu-6f6a40328b6f4679082583c2b3a949cda451a991.zip hqemu-6f6a40328b6f4679082583c2b3a949cda451a991.tar.gz | |
linux-user: Support target-to-host translation of mlockall argument
The argument to the mlockall system call is not necessarily the same on
all platforms and thus may require translation prior to passing to the
host.
For example, PowerPC 64 bit platforms define values for MCL_CURRENT
(0x2000) and MCL_FUTURE (0x4000) which are different from Intel platforms
(0x1 and 0x2, respectively)
Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 450f22d..1da216e 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -4968,6 +4968,21 @@ static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp, return 0; } +#if defined(TARGET_NR_mlockall) +static inline int target_to_host_mlockall_arg(int arg) +{ + int result = 0; + + if (arg & TARGET_MLOCKALL_MCL_CURRENT) { + result |= MCL_CURRENT; + } + if (arg & TARGET_MLOCKALL_MCL_FUTURE) { + result |= MCL_FUTURE; + } + return result; +} +#endif + #if defined(TARGET_NR_stat64) || defined(TARGET_NR_newfstatat) static inline abi_long host_to_target_stat64(void *cpu_env, abi_ulong target_addr, @@ -6820,7 +6835,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_mlockall case TARGET_NR_mlockall: - ret = get_errno(mlockall(arg1)); + ret = get_errno(mlockall(target_to_host_mlockall_arg(arg1))); break; #endif #ifdef TARGET_NR_munlockall |
