diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/xtensa/include/asm/processor.h | 3 | ||||
| -rw-r--r-- | arch/xtensa/kernel/entry.S | 6 | ||||
| -rw-r--r-- | arch/xtensa/kernel/process.c | 2 |
3 files changed, 4 insertions, 7 deletions
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h index 7495520d7a3e..6fa903daf2a2 100644 --- a/arch/xtensa/include/asm/processor.h +++ b/arch/xtensa/include/asm/processor.h @@ -195,6 +195,7 @@ struct thread_struct { /* Clearing a0 terminates the backtrace. */ #define start_thread(regs, new_pc, new_sp) \ do { \ + unsigned long syscall = (regs)->syscall; \ memset((regs), 0, sizeof(*(regs))); \ (regs)->pc = (new_pc); \ (regs)->ps = USER_PS_VALUE; \ @@ -204,7 +205,7 @@ struct thread_struct { (regs)->depc = 0; \ (regs)->windowbase = 0; \ (regs)->windowstart = 1; \ - (regs)->syscall = NO_SYSCALL; \ + (regs)->syscall = syscall; \ } while (0) /* Forward declaration */ diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index 2ca209e71565..59af494d9940 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -1895,8 +1895,6 @@ ENTRY(system_call) l32i a7, a2, PT_SYSCALL 1: - s32i a7, a1, 4 - /* syscall = sys_call_table[syscall_nr] */ movi a4, sys_call_table @@ -1930,12 +1928,8 @@ ENTRY(system_call) abi_ret(4) 1: - l32i a4, a1, 4 - l32i a3, a2, PT_SYSCALL - s32i a4, a2, PT_SYSCALL mov a6, a2 call4 do_syscall_trace_leave - s32i a3, a2, PT_SYSCALL abi_ret(4) ENDPROC(system_call) diff --git a/arch/xtensa/kernel/process.c b/arch/xtensa/kernel/process.c index db278a9e80c7..9e1c49134c07 100644 --- a/arch/xtensa/kernel/process.c +++ b/arch/xtensa/kernel/process.c @@ -264,6 +264,8 @@ int copy_thread(unsigned long clone_flags, unsigned long usp_thread_fn, ®s->areg[XCHAL_NUM_AREGS - len/4], len); } + childregs->syscall = regs->syscall; + /* The thread pointer is passed in the '4th argument' (= a5) */ if (clone_flags & CLONE_SETTLS) childregs->threadptr = childregs->areg[5]; |