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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2014-02-27 08:52:01 (GMT) |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2014-03-04 08:05:38 (GMT) |
| commit | b07edab23c7f93db0e7ab09bd7f5eddc421f6e8c (patch) | |
| tree | e2234efdafec06a41c47dd705081406026122492 /arch/s390/kernel/compat_wrapper.S | |
| parent | 5383d2c8b3ee61a762043818d7c07bbc0049b031 (diff) | |
| download | linux-b07edab23c7f93db0e7ab09bd7f5eddc421f6e8c.tar.xz | |
s390/compat: convert system call wrappers to C part 01
Introduce a new compat_wrap.c file which contains the s390 specific compat
system call wrappers.
The s390 specific system call wrappers only perform sign, zero and pointer
conversion of system call arguments before actually calling the non-compat
system call.
Therefore introduce COMPAT_SYSCALL_WRAPx macros which generate C code that
is nearly identical to the assembly code. This has the advantage that the
compile will generate correct code, and we avoid the frequent copy-paste
errors seen in the compat_wrapper.S file.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/compat_wrapper.S')
| -rw-r--r-- | arch/s390/kernel/compat_wrapper.S | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S index 16ce718..09e65cd 100644 --- a/arch/s390/kernel/compat_wrapper.S +++ b/arch/s390/kernel/compat_wrapper.S @@ -8,47 +8,10 @@ #include <linux/linkage.h> -ENTRY(sys32_exit_wrapper) - lgfr %r2,%r2 # int - jg sys_exit # branch to sys_exit - -ENTRY(sys32_close_wrapper) - llgfr %r2,%r2 # unsigned int - jg sys_close # branch to system call - -ENTRY(sys32_creat_wrapper) - llgtr %r2,%r2 # const char * - lgfr %r3,%r3 # int - jg sys_creat # branch to system call - -ENTRY(sys32_link_wrapper) - llgtr %r2,%r2 # const char * - llgtr %r3,%r3 # const char * - jg sys_link # branch to system call - -ENTRY(sys32_unlink_wrapper) - llgtr %r2,%r2 # const char * - jg sys_unlink # branch to system call - -ENTRY(sys32_chdir_wrapper) - llgtr %r2,%r2 # const char * - jg sys_chdir # branch to system call - ENTRY(sys32_time_wrapper) llgtr %r2,%r2 # int * jg compat_sys_time # branch to system call -ENTRY(sys32_mknod_wrapper) - llgtr %r2,%r2 # const char * - lgfr %r3,%r3 # int - llgfr %r4,%r4 # dev - jg sys_mknod # branch to system call - -ENTRY(sys32_chmod_wrapper) - llgtr %r2,%r2 # const char * - llgfr %r3,%r3 # mode_t - jg sys_chmod # branch to system call - #sys32_getpid_wrapper # void ENTRY(sys32_mount_wrapper) @@ -59,10 +22,6 @@ ENTRY(sys32_mount_wrapper) llgtr %r6,%r6 # void * jg compat_sys_mount # branch to system call -ENTRY(sys32_oldumount_wrapper) - llgtr %r2,%r2 # char * - jg sys_oldumount # branch to system call - ENTRY(sys32_ptrace_wrapper) lgfr %r2,%r2 # long lgfr %r3,%r3 # long @@ -70,26 +29,11 @@ ENTRY(sys32_ptrace_wrapper) llgfr %r5,%r5 # long jg compat_sys_ptrace # branch to system call -ENTRY(sys32_alarm_wrapper) - llgfr %r2,%r2 # unsigned int - jg sys_alarm # branch to system call - ENTRY(compat_sys_utime_wrapper) llgtr %r2,%r2 # char * llgtr %r3,%r3 # struct compat_utimbuf * jg compat_sys_utime # branch to system call -ENTRY(sys32_access_wrapper) - llgtr %r2,%r2 # const char * - lgfr %r3,%r3 # int - jg sys_access # branch to system call - -ENTRY(sys32_nice_wrapper) - lgfr %r2,%r2 # int - jg sys_nice # branch to system call - -#sys32_sync_wrapper # void - ENTRY(sys32_kill_wrapper) lgfr %r2,%r2 # int lgfr %r3,%r3 # int |