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-rw-r--r--arch/arm/kernel/entry-common.S35
-rw-r--r--arch/arm/kernel/traps.c2
2 files changed, 22 insertions, 15 deletions
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index e2b42997ad3..34826bcceb7 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -98,20 +98,14 @@ ENTRY(ret_from_fork)
run on an ARM7 and we can save a couple of instructions.
--pb */
#ifdef CONFIG_CPU_ARM710
- .macro arm710_bug_check, instr, temp
- and \temp, \instr, #0x0f000000 @ check for SWI
- teq \temp, #0x0f000000
- bne .Larm700bug
- .endm
-
-.Larm700bug:
+#define A710(code...) code
+.Larm710bug:
ldmia sp, {r0 - lr}^ @ Get calling r0 - lr
mov r0, r0
add sp, sp, #S_FRAME_SIZE
subs pc, lr, #4
#else
- .macro arm710_bug_check, instr, temp
- .endm
+#define A710(code...)
#endif
.align 5
@@ -129,14 +123,24 @@ ENTRY(vector_swi)
/*
* Get the system call number.
*/
-#ifdef CONFIG_ARM_THUMB
+#if defined(CONFIG_AEABI)
+
+ @ syscall number is in scno (r7) already.
+
+ A710( ldr ip, [lr, #-4] @ get SWI instruction )
+ A710( and ip, ip, #0x0f000000 @ check for SWI )
+ A710( teq ip, #0x0f000000 )
+ A710( bne .Larm710bug )
+#elif defined(CONFIG_ARM_THUMB)
tst r8, #PSR_T_BIT @ this is SPSR from save_user_regs
addne scno, r7, #__NR_SYSCALL_BASE @ put OS number in
ldreq scno, [lr, #-4]
#else
ldr scno, [lr, #-4] @ get SWI instruction
+ A710( and ip, scno, #0x0f000000 @ check for SWI )
+ A710( teq ip, #0x0f000000 )
+ A710( bne .Larm710bug )
#endif
- arm710_bug_check scno, ip
#ifdef CONFIG_ALIGNMENT_TRAP
ldr ip, __cr_alignment
@@ -145,18 +149,19 @@ ENTRY(vector_swi)
#endif
enable_irq
- stmdb sp!, {r4, r5} @ push fifth and sixth args
-
get_thread_info tsk
ldr ip, [tsk, #TI_FLAGS] @ check for syscall tracing
+#ifndef CONFIG_AEABI
bic scno, scno, #0xff000000 @ mask off SWI op-code
eor scno, scno, #__NR_SYSCALL_BASE @ check OS number
+#endif
adr tbl, sys_call_table @ load syscall table pointer
+ stmdb sp!, {r4, r5} @ push fifth and sixth args
tst ip, #_TIF_SYSCALL_TRACE @ are we tracing syscalls?
bne __sys_trace
- adr lr, ret_fast_syscall @ return address
cmp scno, #NR_syscalls @ check upper syscall limit
+ adr lr, ret_fast_syscall @ return address
ldrcc pc, [tbl, scno, lsl #2] @ call sys_* routine
add r1, sp, #S_OFF
@@ -207,6 +212,7 @@ ENTRY(sys_call_table)
@ r8 = syscall table
.type sys_syscall, #function
sys_syscall:
+#ifndef CONFIG_AEABI
eor scno, r0, #__NR_SYSCALL_BASE
cmp scno, #__NR_syscall - __NR_SYSCALL_BASE
cmpne scno, #NR_syscalls @ check range
@@ -216,6 +222,7 @@ sys_syscall:
movlo r2, r3
movlo r3, r4
ldrlo pc, [tbl, scno, lsl #2]
+#endif
b sys_ni_syscall
sys_fork_wrapper:
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 93cfd3ffcc7..10235b01582 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -404,7 +404,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
struct thread_info *thread = current_thread_info();
siginfo_t info;
- if ((no >> 16) != 0x9f)
+ if ((no >> 16) != (__ARM_NR_BASE>> 16))
return bad_syscall(no, regs);
switch (no & 0xffff) {