diff options
| author | Brian Gerst <brgerst@gmail.com> | 2020-03-13 15:51:41 -0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-03-21 16:03:24 +0100 |
| commit | 121b32a58a3af89a780cf194ce3769fc4120e574 (patch) | |
| tree | 17d48338ad3f310e8893d3f06603e21b64e683b0 /arch/x86/entry | |
| parent | 866128a996647097d599c6b91deb340d4da593a8 (diff) | |
x86/entry/32: Use IA32-specific wrappers for syscalls taking 64-bit arguments
For the 32-bit syscall interface, 64-bit arguments (loff_t) are passed via
a pair of 32-bit registers. These register pairs end up in consecutive stack
slots, which matches the C ABI for 64-bit arguments. But when accessing the
registers directly from pt_regs, the wrapper needs to manually reassemble the
64-bit value. These wrappers already exist for 32-bit compat, so make them
available to 32-bit native in preparation for enabling pt_regs-based syscalls.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net>
Link: https://lkml.kernel.org/r/20200313195144.164260-16-brgerst@gmail.com
Diffstat (limited to 'arch/x86/entry')
| -rw-r--r-- | arch/x86/entry/syscalls/syscall_32.tbl | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl index 0b8e24cb981d..54581ac671b4 100644 --- a/arch/x86/entry/syscalls/syscall_32.tbl +++ b/arch/x86/entry/syscalls/syscall_32.tbl @@ -191,8 +191,8 @@ 177 i386 rt_sigtimedwait sys_rt_sigtimedwait_time32 compat_sys_rt_sigtimedwait_time32 178 i386 rt_sigqueueinfo sys_rt_sigqueueinfo compat_sys_rt_sigqueueinfo 179 i386 rt_sigsuspend sys_rt_sigsuspend compat_sys_rt_sigsuspend -180 i386 pread64 sys_pread64 compat_sys_ia32_pread64 -181 i386 pwrite64 sys_pwrite64 compat_sys_ia32_pwrite64 +180 i386 pread64 sys_ia32_pread64 +181 i386 pwrite64 sys_ia32_pwrite64 182 i386 chown sys_chown16 183 i386 getcwd sys_getcwd 184 i386 capget sys_capget @@ -204,8 +204,8 @@ 190 i386 vfork sys_vfork 191 i386 ugetrlimit sys_getrlimit compat_sys_getrlimit 192 i386 mmap2 sys_mmap_pgoff -193 i386 truncate64 sys_truncate64 compat_sys_ia32_truncate64 -194 i386 ftruncate64 sys_ftruncate64 compat_sys_ia32_ftruncate64 +193 i386 truncate64 sys_ia32_truncate64 +194 i386 ftruncate64 sys_ia32_ftruncate64 195 i386 stat64 sys_stat64 compat_sys_ia32_stat64 196 i386 lstat64 sys_lstat64 compat_sys_ia32_lstat64 197 i386 fstat64 sys_fstat64 compat_sys_ia32_fstat64 @@ -236,7 +236,7 @@ # 222 is unused # 223 is unused 224 i386 gettid sys_gettid -225 i386 readahead sys_readahead compat_sys_ia32_readahead +225 i386 readahead sys_ia32_readahead 226 i386 setxattr sys_setxattr 227 i386 lsetxattr sys_lsetxattr 228 i386 fsetxattr sys_fsetxattr @@ -261,7 +261,7 @@ 247 i386 io_getevents sys_io_getevents_time32 248 i386 io_submit sys_io_submit compat_sys_io_submit 249 i386 io_cancel sys_io_cancel -250 i386 fadvise64 sys_fadvise64 compat_sys_ia32_fadvise64 +250 i386 fadvise64 sys_ia32_fadvise64 # 251 is available for reuse (was briefly sys_set_zone_reclaim) 252 i386 exit_group sys_exit_group 253 i386 lookup_dcookie sys_lookup_dcookie compat_sys_lookup_dcookie @@ -283,7 +283,7 @@ 269 i386 fstatfs64 sys_fstatfs64 compat_sys_fstatfs64 270 i386 tgkill sys_tgkill 271 i386 utimes sys_utimes_time32 -272 i386 fadvise64_64 sys_fadvise64_64 compat_sys_ia32_fadvise64_64 +272 i386 fadvise64_64 sys_ia32_fadvise64_64 273 i386 vserver 274 i386 mbind sys_mbind 275 i386 get_mempolicy sys_get_mempolicy compat_sys_get_mempolicy @@ -325,7 +325,7 @@ 311 i386 set_robust_list sys_set_robust_list compat_sys_set_robust_list 312 i386 get_robust_list sys_get_robust_list compat_sys_get_robust_list 313 i386 splice sys_splice -314 i386 sync_file_range sys_sync_file_range compat_sys_ia32_sync_file_range +314 i386 sync_file_range sys_ia32_sync_file_range 315 i386 tee sys_tee 316 i386 vmsplice sys_vmsplice compat_sys_vmsplice 317 i386 move_pages sys_move_pages compat_sys_move_pages @@ -335,7 +335,7 @@ 321 i386 signalfd sys_signalfd compat_sys_signalfd 322 i386 timerfd_create sys_timerfd_create 323 i386 eventfd sys_eventfd -324 i386 fallocate sys_fallocate compat_sys_ia32_fallocate +324 i386 fallocate sys_ia32_fallocate 325 i386 timerfd_settime sys_timerfd_settime32 326 i386 timerfd_gettime sys_timerfd_gettime32 327 i386 signalfd4 sys_signalfd4 compat_sys_signalfd4 |