/* SPDX-License-Identifier: GPL-2.0 */	/* SunOS's execv() call only specifies the argv argument, the	 * environment settings are the same as the calling processes.	 */sys64_execve:	set	sys_execve, %g1	jmpl	%g1, %g0	 flushw sys64_execveat:	set	sys_execveat, %g1	jmpl	%g1, %g0	 flushw #ifdef CONFIG_COMPATsunos_execv:	mov	%g0, %o2sys32_execve:	set	compat_sys_execve, %g1	jmpl	%g1, %g0	 flushw sys32_execveat:	set	compat_sys_execveat, %g1	jmpl	%g1, %g0	 flushw#endif 	.align	32#ifdef CONFIG_COMPATsys32_sigstack:	ba,pt	%xcc, do_sys32_sigstack	 mov	%i6, %o2#endif	.align	32#ifdef CONFIG_COMPATsys32_sigreturn:	add	%sp, PTREGS_OFF, %o0	call	do_sigreturn32	 add	%o7, 1f-.-4, %o7	nop#endifsys_rt_sigreturn:	add	%sp, PTREGS_OFF, %o0	call	do_rt_sigreturn	 add	%o7, 1f-.-4, %o7	nop#ifdef CONFIG_COMPATsys32_rt_sigreturn:	add	%sp, PTREGS_OFF, %o0	call	do_rt_sigreturn32	 add	%o7, 1f-.-4, %o7	nop#endif	.align	321:	ldx	[%g6 + TI_FLAGS], %l5	andcc	%l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0	be,pt	%icc, rtrap	 nop	call	syscall_trace_leave	 add	%sp, PTREGS_OFF, %o0	ba,pt	%xcc, rtrap	 nop 	/* This is how fork() was meant to be done, 8 instruction entry.	 *	 * I questioned the following code briefly, let me clear things	 * up so you must not reason on it like I did.	 *	 * Know the fork_kpsr etc. we use in the sparc32 port?  We don't	 * need it here because the only piece of window state we copy to	 * the child is the CWP register.  Even if the parent sleeps,	 * we are safe because we stuck it into pt_regs of the parent	 * so it will not change.	 *	 * XXX This raises the question, whether we can do the same on	 * XXX sparc32 to get rid of fork_kpsr _and_ fork_kwim.  The	 * XXX answer is yes.  We stick fork_kpsr in UREG_G0 and	 * XXX fork_kwim in UREG_G1 (global registers are considered	 * XXX volatile across a system call in the sparc ABI I think	 * XXX if it isn't we can use regs->y instead, anyone who depends	 * XXX upon the Y register being preserved across a fork deserves	 * XXX to lose).	 *	 * In fact we should take advantage of that fact for other things	 * during system calls...	 */	.align	32sys_vfork:	flushw	ba,pt	%xcc, sparc_vfork	 add	%sp, PTREGS_OFF, %o0 	.align	32sys_fork:	flushw	ba,pt	%xcc, sparc_fork	 add	%sp, PTREGS_OFF, %o0 	.align	32sys_clone:	flushw	ba,pt	%xcc, sparc_clone	 add	%sp, PTREGS_OFF, %o0 	.align	32__sys_clone3:	flushw	ba,pt	%xcc, sparc_clone3	 add	%sp, PTREGS_OFF, %o0 	.globl	ret_from_forkret_from_fork:	/* Clear current_thread_info()->new_child. */	stb	%g0, [%g6 + TI_NEW_CHILD]	call	schedule_tail	 mov	%g7, %o0	ldx	[%sp + PTREGS_OFF + PT_V9_I0], %o0	brnz,pt	%o0, ret_sys_call	 ldx	[%g6 + TI_FLAGS], %l0	ldx	[%sp + PTREGS_OFF + PT_V9_G1], %l1	brz,pt	%l1, ret_sys_call	 nop	call	%l1	 ldx	[%sp + PTREGS_OFF + PT_V9_G2], %o0	ba,pt	%xcc, ret_sys_call	 mov	0, %o0 	.globl	sparc_exit_group	.type	sparc_exit_group,#functionsparc_exit_group:	sethi	%hi(sys_exit_group), %g7	ba,pt	%xcc, 1f	 or	%g7, %lo(sys_exit_group), %g7	.size	sparc_exit_group,.-sparc_exit_group 	.globl	sparc_exit	.type	sparc_exit,#functionsparc_exit:	sethi	%hi(sys_exit), %g7	or	%g7, %lo(sys_exit), %g71:	rdpr	%pstate, %g2	wrpr	%g2, PSTATE_IE, %pstate	rdpr	%otherwin, %g1	rdpr	%cansave, %g3	add	%g3, %g1, %g3	wrpr	%g3, 0x0, %cansave	wrpr	%g0, 0x0, %otherwin	wrpr	%g2, 0x0, %pstate	jmpl	%g7, %g0	 stb	%g0, [%g6 + TI_WSAVED]	.size	sparc_exit,.-sparc_exit linux_sparc_ni_syscall:	sethi	%hi(sys_ni_syscall), %l7	ba,pt	%xcc, 4f	 or	%l7, %lo(sys_ni_syscall), %l7 linux_syscall_trace32:	call	syscall_trace_enter	 add	%sp, PTREGS_OFF, %o0	brnz,pn	%o0, 3f	 mov	-ENOSYS, %o0 	/* Syscall tracing can modify the registers.  */	ldx	[%sp + PTREGS_OFF + PT_V9_G1], %g1	sethi	%hi(sys_call_table32), %l7	ldx	[%sp + PTREGS_OFF + PT_V9_I0], %i0	or	%l7, %lo(sys_call_table32), %l7	ldx	[%sp + PTREGS_OFF + PT_V9_I1], %i1	ldx	[%sp + PTREGS_OFF + PT_V9_I2], %i2	ldx	[%sp + PTREGS_OFF + PT_V9_I3], %i3	ldx	[%sp + PTREGS_OFF + PT_V9_I4], %i4	ldx	[%sp + PTREGS_OFF + PT_V9_I5], %i5 	cmp	%g1, NR_syscalls	bgeu,pn	%xcc, 3f	 mov	-ENOSYS, %o0 	sll	%g1, 2, %l4	srl	%i0, 0, %o0	lduw	[%l7 + %l4], %l7	srl	%i4, 0, %o4	srl	%i1, 0, %o1	srl	%i2, 0, %o2	ba,pt	%xcc, 5f	 srl	%i3, 0, %o3 linux_syscall_trace:	call	syscall_trace_enter	 add	%sp, PTREGS_OFF, %o0	brnz,pn	%o0, 3f	 mov	-ENOSYS, %o0 	/* Syscall tracing can modify the registers.  */	ldx	[%sp + PTREGS_OFF + PT_V9_G1], %g1	sethi	%hi(sys_call_table64), %l7	ldx	[%sp + PTREGS_OFF + PT_V9_I0], %i0	or	%l7, %lo(sys_call_table64), %l7	ldx	[%sp + PTREGS_OFF + PT_V9_I1], %i1	ldx	[%sp + PTREGS_OFF + PT_V9_I2], %i2	ldx	[%sp + PTREGS_OFF + PT_V9_I3], %i3	ldx	[%sp + PTREGS_OFF + PT_V9_I4], %i4	ldx	[%sp + PTREGS_OFF + PT_V9_I5], %i5 	cmp	%g1, NR_syscalls	bgeu,pn	%xcc, 3f	 mov	-ENOSYS, %o0 	sll	%g1, 2, %l4	mov	%i0, %o0	lduw	[%l7 + %l4], %l7	mov	%i1, %o1	mov	%i2, %o2	mov	%i3, %o3	b,pt	%xcc, 2f	 mov	%i4, %o4  	/* Linux 32-bit system calls enter here... */	.align	32	.globl	linux_sparc_syscall32linux_sparc_syscall32:	/* Direct access to user regs, much faster. */	cmp	%g1, NR_syscalls			! IEU1	Group	bgeu,pn	%xcc, linux_sparc_ni_syscall		! CTI	 srl	%i0, 0, %o0				! IEU0	sll	%g1, 2, %l4				! IEU0	Group	srl	%i4, 0, %o4				! IEU1	lduw	[%l7 + %l4], %l7			! Load	srl	%i1, 0, %o1				! IEU0	Group	ldx	[%g6 + TI_FLAGS], %l0		! Load 	srl	%i3, 0, %o3				! IEU0	srl	%i2, 0, %o2				! IEU0	Group	andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0	bne,pn	%icc, linux_syscall_trace32		! CTI	 mov	%i0, %l5				! IEU15:	call	%l7					! CTI	Group brk forced	 srl	%i5, 0, %o5				! IEU1	ba,pt	%xcc, 3f	 sra	%o0, 0, %o0 	/* Linux native system calls enter here... */	.align	32	.globl	linux_sparc_syscalllinux_sparc_syscall:	/* Direct access to user regs, much faster. */	cmp	%g1, NR_syscalls			! IEU1	Group	bgeu,pn	%xcc, linux_sparc_ni_syscall		! CTI	 mov	%i0, %o0				! IEU0	sll	%g1, 2, %l4				! IEU0	Group	mov	%i1, %o1				! IEU1	lduw	[%l7 + %l4], %l7			! Load4:	mov	%i2, %o2				! IEU0	Group	ldx	[%g6 + TI_FLAGS], %l0		! Load 	mov	%i3, %o3				! IEU1	mov	%i4, %o4				! IEU0	Group	andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0	bne,pn	%icc, linux_syscall_trace		! CTI	Group	 mov	%i0, %l5				! IEU02:	call	%l7					! CTI	Group brk forced	 mov	%i5, %o5				! IEU0	nop 3:	stx	%o0, [%sp + PTREGS_OFF + PT_V9_I0]ret_sys_call:	ldx	[%sp + PTREGS_OFF + PT_V9_TSTATE], %g3	mov	%ulo(TSTATE_XCARRY | TSTATE_ICARRY), %g2	sllx	%g2, 32, %g2 	cmp	%o0, -ERESTART_RESTARTBLOCK	bgeu,pn	%xcc, 1f	 andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0	ldx	[%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc 2:	/* System call success, clear Carry condition code. */	andn	%g3, %g2, %g33:	stx	%g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]		bne,pn	%icc, linux_syscall_trace2	 add	%l1, 0x4, %l2			! npc = npc+4	stx	%l1, [%sp + PTREGS_OFF + PT_V9_TPC]	ba,pt	%xcc, rtrap	 stx	%l2, [%sp + PTREGS_OFF + PT_V9_TNPC] 1:	/* Check if force_successful_syscall_return()	 * was invoked.	 */	ldub	[%g6 + TI_SYS_NOERROR], %l2	brnz,pn %l2, 2b	 ldx	[%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc	/* System call failure, set Carry condition code.	 * Also, get abs(errno) to return to the process.	 */	sub	%g0, %o0, %o0	stx	%o0, [%sp + PTREGS_OFF + PT_V9_I0]	ba,pt	%xcc, 3b	 or	%g3, %g2, %g3 linux_syscall_trace2:	call	syscall_trace_leave	 add	%sp, PTREGS_OFF, %o0	stx	%l1, [%sp + PTREGS_OFF + PT_V9_TPC]	ba,pt	%xcc, rtrap	 stx	%l2, [%sp + PTREGS_OFF + PT_V9_TNPC]