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Commit f0a1bf08 authored by Max Filippov's avatar Max Filippov Committed by Chris Zankel
Browse files

xtensa: switch to generic kernel_execve() 



Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
Signed-off-by: default avatarChris Zankel <chris@zankel.net>
parent 3306a726

arch/xtensa/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ config XTENSA 
	select MODULES_USE_ELF_RELA

	select GENERIC_PCI_IOMAP

	select GENERIC_KERNEL_THREAD

	select GENERIC_KERNEL_EXECVE

	select ARCH_WANT_OPTIONAL_GPIOLIB

	help

	  Xtensa processors are 32-bit RISC machines designed by Tensilica

arch/xtensa/kernel/entry.S

+1 −17
Original line number Diff line number Diff line
@@ -1832,22 +1832,6 @@ ENTRY(system_call) 
	retw





/*

 * Do a system call from kernel instead of calling sys_execve, so we end up

 * with proper pt_regs.

 *

 * int kernel_execve(const char *fname, char *const argv[], charg *const envp[])

 * a2                        a2               a3                  a4

 */



ENTRY(kernel_execve)

	entry	a1, 16

	mov	a6, a2			# arg0 is in a6

	movi	a2, __NR_execve

	syscall



	retw



/*

 * Task switch.

 *
@@ -1940,6 +1924,6 @@ ENTRY(ret_from_kernel_thread) 
	call4	schedule_tail

	mov	a6, a3

	callx4	a2

	call4	do_exit

	j	common_exception_return



ENDPROC(ret_from_kernel_thread)