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Commit 5fae1b66 authored by Al Viro's avatar Al Viro
Browse files

h8300: generic kernel_execve() 



Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 557e1995

arch/h8300/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ config H8300 
	select GENERIC_CPU_DEVICES

	select MODULES_USE_ELF_RELA

	select GENERIC_KERNEL_THREAD

	select GENERIC_KERNEL_EXECVE



config SYMBOL_PREFIX

	string

arch/h8300/kernel/entry.S

+1 −2
Original line number Diff line number Diff line
@@ -337,8 +337,7 @@ SYMBOL_NAME_LABEL(ret_from_kernel_thread) 
	mov.l	@(LER4:16,sp),er0

	mov.l	@(LER5:16,sp),er1

	jsr	@er1

	sub.l	@er0,@er0

	jsr	@SYMBOL_NAME(sys_exit)

	jmp	@SYMBOL_NAME(ret_from_exception)



SYMBOL_NAME_LABEL(resume)

	/*

arch/h8300/kernel/sys_h8300.c

+0 −26
Original line number Diff line number Diff line
@@ -46,29 +46,3 @@ asmlinkage void syscall_print(void *dummy,...) 
               ((regs->pc)&0xffffff)-2,regs->orig_er0,regs->er1,regs->er2,regs->er3,regs->er0);

}

#endif
 


/*

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

 * end up with proper pt_regs.

 */

asmlinkage

int kernel_execve(const char *filename,

		  const char *const argv[],

		  const char *const envp[])

{

	register long res __asm__("er0");

	register const char *const *_c __asm__("er3") = envp;

	register const char *const *_b __asm__("er2") = argv;

	register const char * _a __asm__("er1") = filename;

	__asm__ __volatile__ ("mov.l %1,er0\n\t"

			"trapa	#0\n\t"

			: "=r" (res)

			: "g" (__NR_execve),

			  "g" (_a),

			  "g" (_b),

			  "g" (_c)

			: "cc", "memory");

	return res;

}