Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) 	/* SunOS's execv() call only specifies the argv argument, the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) 	 * environment settings are the same as the calling processes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) sys64_execve:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) 	set	sys_execve, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 	jmpl	%g1, %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 	 flushw
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) sys64_execveat:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 	set	sys_execveat, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 	jmpl	%g1, %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 	 flushw
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) sunos_execv:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 	mov	%g0, %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) sys32_execve:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	set	compat_sys_execve, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	jmpl	%g1, %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	 flushw
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) sys32_execveat:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	set	compat_sys_execveat, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	jmpl	%g1, %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	 flushw
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	.align	32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) sys32_sigstack:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	ba,pt	%xcc, do_sys32_sigstack
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	 mov	%i6, %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	.align	32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) sys32_sigreturn:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	add	%sp, PTREGS_OFF, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	call	do_sigreturn32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	 add	%o7, 1f-.-4, %o7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) sys_rt_sigreturn:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	add	%sp, PTREGS_OFF, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	call	do_rt_sigreturn
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	 add	%o7, 1f-.-4, %o7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) sys32_rt_sigreturn:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	add	%sp, PTREGS_OFF, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	call	do_rt_sigreturn32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	 add	%o7, 1f-.-4, %o7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	.align	32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 1:	ldx	[%g6 + TI_FLAGS], %l5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	andcc	%l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	be,pt	%icc, rtrap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	call	syscall_trace_leave
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	 add	%sp, PTREGS_OFF, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	ba,pt	%xcc, rtrap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	/* This is how fork() was meant to be done, 8 instruction entry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	 * I questioned the following code briefly, let me clear things
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	 * up so you must not reason on it like I did.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	 * Know the fork_kpsr etc. we use in the sparc32 port?  We don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	 * need it here because the only piece of window state we copy to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	 * the child is the CWP register.  Even if the parent sleeps,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	 * we are safe because we stuck it into pt_regs of the parent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	 * so it will not change.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	 * XXX This raises the question, whether we can do the same on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	 * XXX sparc32 to get rid of fork_kpsr _and_ fork_kwim.  The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	 * XXX answer is yes.  We stick fork_kpsr in UREG_G0 and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	 * XXX fork_kwim in UREG_G1 (global registers are considered
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	 * XXX volatile across a system call in the sparc ABI I think
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	 * XXX if it isn't we can use regs->y instead, anyone who depends
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	 * XXX upon the Y register being preserved across a fork deserves
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	 * XXX to lose).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	 * In fact we should take advantage of that fact for other things
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	 * during system calls...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	.align	32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) sys_vfork:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	flushw
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	ba,pt	%xcc, sparc_vfork
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	 add	%sp, PTREGS_OFF, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	.align	32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) sys_fork:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	flushw
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	ba,pt	%xcc, sparc_fork
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	 add	%sp, PTREGS_OFF, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	.align	32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) sys_clone:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	flushw
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	ba,pt	%xcc, sparc_clone
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	 add	%sp, PTREGS_OFF, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	.globl	ret_from_fork
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) ret_from_fork:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	/* Clear current_thread_info()->new_child. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	stb	%g0, [%g6 + TI_NEW_CHILD]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	call	schedule_tail
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	 mov	%g7, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	ldx	[%sp + PTREGS_OFF + PT_V9_I0], %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	brnz,pt	%o0, ret_sys_call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	 ldx	[%g6 + TI_FLAGS], %l0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	ldx	[%sp + PTREGS_OFF + PT_V9_G1], %l1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	call	%l1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	 ldx	[%sp + PTREGS_OFF + PT_V9_G2], %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	ba,pt	%xcc, ret_sys_call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	 mov	0, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	.globl	sparc_exit_group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	.type	sparc_exit_group,#function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) sparc_exit_group:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	sethi	%hi(sys_exit_group), %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	ba,pt	%xcc, 1f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	 or	%g7, %lo(sys_exit_group), %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	.size	sparc_exit_group,.-sparc_exit_group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	.globl	sparc_exit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	.type	sparc_exit,#function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) sparc_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	sethi	%hi(sys_exit), %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	or	%g7, %lo(sys_exit), %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 1:	rdpr	%pstate, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	wrpr	%g2, PSTATE_IE, %pstate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	rdpr	%otherwin, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	rdpr	%cansave, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	add	%g3, %g1, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	wrpr	%g3, 0x0, %cansave
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	wrpr	%g0, 0x0, %otherwin
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	wrpr	%g2, 0x0, %pstate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	jmpl	%g7, %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	 stb	%g0, [%g6 + TI_WSAVED]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	.size	sparc_exit,.-sparc_exit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) linux_sparc_ni_syscall:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	sethi	%hi(sys_ni_syscall), %l7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	ba,pt	%xcc, 4f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	 or	%l7, %lo(sys_ni_syscall), %l7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) linux_syscall_trace32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	call	syscall_trace_enter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	 add	%sp, PTREGS_OFF, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	brnz,pn	%o0, 3f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	 mov	-ENOSYS, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	/* Syscall tracing can modify the registers.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	ldx	[%sp + PTREGS_OFF + PT_V9_G1], %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	sethi	%hi(sys_call_table32), %l7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	ldx	[%sp + PTREGS_OFF + PT_V9_I0], %i0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	or	%l7, %lo(sys_call_table32), %l7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	ldx	[%sp + PTREGS_OFF + PT_V9_I1], %i1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	ldx	[%sp + PTREGS_OFF + PT_V9_I2], %i2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	ldx	[%sp + PTREGS_OFF + PT_V9_I3], %i3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	ldx	[%sp + PTREGS_OFF + PT_V9_I4], %i4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	ldx	[%sp + PTREGS_OFF + PT_V9_I5], %i5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	cmp	%g1, NR_syscalls
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	bgeu,pn	%xcc, 3f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	 mov	-ENOSYS, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	sll	%g1, 2, %l4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	srl	%i0, 0, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	lduw	[%l7 + %l4], %l7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	srl	%i4, 0, %o4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	srl	%i1, 0, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	srl	%i2, 0, %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	ba,pt	%xcc, 5f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	 srl	%i3, 0, %o3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) linux_syscall_trace:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	call	syscall_trace_enter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	 add	%sp, PTREGS_OFF, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	brnz,pn	%o0, 3f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	 mov	-ENOSYS, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	/* Syscall tracing can modify the registers.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	ldx	[%sp + PTREGS_OFF + PT_V9_G1], %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	sethi	%hi(sys_call_table64), %l7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	ldx	[%sp + PTREGS_OFF + PT_V9_I0], %i0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	or	%l7, %lo(sys_call_table64), %l7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	ldx	[%sp + PTREGS_OFF + PT_V9_I1], %i1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	ldx	[%sp + PTREGS_OFF + PT_V9_I2], %i2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	ldx	[%sp + PTREGS_OFF + PT_V9_I3], %i3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	ldx	[%sp + PTREGS_OFF + PT_V9_I4], %i4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	ldx	[%sp + PTREGS_OFF + PT_V9_I5], %i5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	cmp	%g1, NR_syscalls
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	bgeu,pn	%xcc, 3f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	 mov	-ENOSYS, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	sll	%g1, 2, %l4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	mov	%i0, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	lduw	[%l7 + %l4], %l7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	mov	%i1, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	mov	%i2, %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	mov	%i3, %o3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	b,pt	%xcc, 2f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	 mov	%i4, %o4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	/* Linux 32-bit system calls enter here... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	.align	32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	.globl	linux_sparc_syscall32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) linux_sparc_syscall32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	/* Direct access to user regs, much faster. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	cmp	%g1, NR_syscalls			! IEU1	Group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	bgeu,pn	%xcc, linux_sparc_ni_syscall		! CTI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	 srl	%i0, 0, %o0				! IEU0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	sll	%g1, 2, %l4				! IEU0	Group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	srl	%i4, 0, %o4				! IEU1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	lduw	[%l7 + %l4], %l7			! Load
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	srl	%i1, 0, %o1				! IEU0	Group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	ldx	[%g6 + TI_FLAGS], %l0		! Load
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	srl	%i3, 0, %o3				! IEU0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	srl	%i2, 0, %o2				! IEU0	Group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	bne,pn	%icc, linux_syscall_trace32		! CTI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	 mov	%i0, %l5				! IEU1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 5:	call	%l7					! CTI	Group brk forced
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	 srl	%i5, 0, %o5				! IEU1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	ba,pt	%xcc, 3f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	 sra	%o0, 0, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	/* Linux native system calls enter here... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	.align	32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	.globl	linux_sparc_syscall
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) linux_sparc_syscall:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	/* Direct access to user regs, much faster. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	cmp	%g1, NR_syscalls			! IEU1	Group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	bgeu,pn	%xcc, linux_sparc_ni_syscall		! CTI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	 mov	%i0, %o0				! IEU0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	sll	%g1, 2, %l4				! IEU0	Group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	mov	%i1, %o1				! IEU1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	lduw	[%l7 + %l4], %l7			! Load
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 4:	mov	%i2, %o2				! IEU0	Group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	ldx	[%g6 + TI_FLAGS], %l0		! Load
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	mov	%i3, %o3				! IEU1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	mov	%i4, %o4				! IEU0	Group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	bne,pn	%icc, linux_syscall_trace		! CTI	Group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	 mov	%i0, %l5				! IEU0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 2:	call	%l7					! CTI	Group brk forced
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	 mov	%i5, %o5				! IEU0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 3:	stx	%o0, [%sp + PTREGS_OFF + PT_V9_I0]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) ret_sys_call:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	ldx	[%sp + PTREGS_OFF + PT_V9_TSTATE], %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	mov	%ulo(TSTATE_XCARRY | TSTATE_ICARRY), %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	sllx	%g2, 32, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	cmp	%o0, -ERESTART_RESTARTBLOCK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	bgeu,pn	%xcc, 1f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	 andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	ldx	[%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	/* System call success, clear Carry condition code. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	andn	%g3, %g2, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	stx	%g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]	
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	bne,pn	%icc, linux_syscall_trace2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	 add	%l1, 0x4, %l2			! npc = npc+4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	stx	%l1, [%sp + PTREGS_OFF + PT_V9_TPC]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	ba,pt	%xcc, rtrap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	 stx	%l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	/* Check if force_successful_syscall_return()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	 * was invoked.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	ldub	[%g6 + TI_SYS_NOERROR], %l2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	brnz,pn %l2, 2b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	 ldx	[%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	/* System call failure, set Carry condition code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	 * Also, get abs(errno) to return to the process.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	sub	%g0, %o0, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	stx	%o0, [%sp + PTREGS_OFF + PT_V9_I0]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	ba,pt	%xcc, 3b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	 or	%g3, %g2, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) linux_syscall_trace2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	call	syscall_trace_leave
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	 add	%sp, PTREGS_OFF, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	stx	%l1, [%sp + PTREGS_OFF + PT_V9_TPC]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	ba,pt	%xcc, rtrap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	 stx	%l2, [%sp + PTREGS_OFF + PT_V9_TNPC]