alpha: unify the glue for sigreturn-like syscalls (8a68060c) · Commits · e / devices / android_kernel_fairphone_FP5

arch/alpha/kernel/entry.S

+10 −20

Original line number	Diff line number	Diff line
		@@ -791,7 +791,7 @@ ret_from_kernel_thread:

		/*
		* Special system calls. Most of these are special in that they either
		* have to play switch_stack games or in some way use the pt_regs struct.
		* have to play switch_stack games.
		*/

		.macro fork_like name
		@@ -812,35 +812,25 @@ fork_like fork
		fork_like vfork
		fork_like clone

		.macro sigreturn_like name
		.align 4
		.globl sys_sigreturn
		.ent sys_sigreturn
		sys_sigreturn:
		.globl sys_\name
		.ent sys_\name
		sys_\name:
		.prologue 0
		lda $9, ret_from_straced
		cmpult $26, $9, $9
		lda $sp, -SWITCH_STACK_SIZE($sp)
		jsr $26, do_sigreturn
		jsr $26, do_\name
		bne $9, 1f
		jsr $26, syscall_trace_leave
		1: br $1, undo_switch_stack
		br ret_from_sys_call
		.end sys_sigreturn
		.end sys_\name
		.endm

		.align 4
		.globl sys_rt_sigreturn
		.ent sys_rt_sigreturn
		sys_rt_sigreturn:
		.prologue 0
		lda $9, ret_from_straced
		cmpult $26, $9, $9
		lda $sp, -SWITCH_STACK_SIZE($sp)
		jsr $26, do_rt_sigreturn
		bne $9, 1f
		jsr $26, syscall_trace_leave
		1: br $1, undo_switch_stack
		br ret_from_sys_call
		.end sys_rt_sigreturn
		sigreturn_like sigreturn
		sigreturn_like rt_sigreturn

		.align 4
		.globl alpha_syscall_zero