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[ARM] Fix sys_sendto and sys_recvfrom 6-arg syscalls 

Rather than providing more wrappers for 6-arg syscalls, arrange for
them to be supported as standard.  This just means that we always
store the 6th argument on the stack, rather than in the wrappers.

This means we eliminate the wrappers for:
* sys_futex
* sys_arm_fadvise64_64
* sys_mbind
* sys_ipc

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2005-12-17 15:25:42 +00:00 committed by Russell King
parent 48ea753075
commit 567bd98017
2 changed files with 6 additions and 22 deletions
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8
arch/arm/kernel/calls.S
View File

@ -131,7 +131,7 @@ __syscall_start:
.long sys_wait4
/* 115 */ .long sys_swapoff
.long sys_sysinfo
.long sys_ipc_wrapper
.long sys_ipc
.long sys_fsync
.long sys_sigreturn_wrapper
/* 120 */ .long sys_clone_wrapper
@ -254,7 +254,7 @@ __syscall_start:
.long sys_fremovexattr
.long sys_tkill
.long sys_sendfile64
/* 240 */ .long sys_futex_wrapper
/* 240 */ .long sys_futex
.long sys_sched_setaffinity
.long sys_sched_getaffinity
.long sys_io_setup
@ -284,7 +284,7 @@ __syscall_start:
.long sys_fstatfs64
.long sys_tgkill
.long sys_utimes
/* 270 */ .long sys_arm_fadvise64_64_wrapper
/* 270 */ .long sys_arm_fadvise64_64
.long sys_pciconfig_iobase
.long sys_pciconfig_read
.long sys_pciconfig_write
@ -333,7 +333,7 @@ __syscall_start:
.long sys_inotify_init
.long sys_inotify_add_watch
.long sys_inotify_rm_watch
.long sys_mbind_wrapper
.long sys_mbind
/* 320 */ .long sys_get_mempolicy
.long sys_set_mempolicy
__syscall_end:

20
arch/arm/kernel/entry-common.S
View File

@ -145,7 +145,7 @@ ENTRY(vector_swi)
#endif
enable_irq
str r4, [sp, #-S_OFF]! @ push fifth arg
stmdb sp!, {r4, r5} @ push fifth and sixth args
get_thread_info tsk
ldr ip, [tsk, #TI_FLAGS] @ check for syscall tracing
@ -204,7 +204,7 @@ ENTRY(sys_call_table)
* Special system call wrappers
*/
@ r0 = syscall number
@ r5 = syscall table
@ r8 = syscall table
.type sys_syscall, #function
sys_syscall:
eor scno, r0, #__NR_SYSCALL_BASE
@ -255,22 +255,6 @@ sys_sigaltstack_wrapper:
ldr r2, [sp, #S_OFF + S_SP]
b do_sigaltstack
sys_futex_wrapper:
str r5, [sp, #4] @ push sixth arg
b sys_futex
sys_arm_fadvise64_64_wrapper:
str r5, [sp, #4] @ push r5 to stack
b sys_arm_fadvise64_64
sys_mbind_wrapper:
str r5, [sp, #4]
b sys_mbind
sys_ipc_wrapper:
str r5, [sp, #4] @ push sixth arg
b sys_ipc
/*
* Note: off_4k (r5) is always units of 4K. If we can't do the requested
* offset, we return EINVAL.