/* SPDX-License-Identifier: GPL-2.0 */
#include <asm/thread_info.h>
#include <asm/trap_block.h>
#include <asm/spitfire.h>
#include <asm/ptrace.h>
#include <asm/head.h>

                .text
                .align  8
                .globl  user_rtt_fill_fixup_common
user_rtt_fill_fixup_common:
                rdpr    %cwp, %g1
                add     %g1, 1, %g1
                wrpr    %g1, 0x0, %cwp

                rdpr    %wstate, %g2
                sll     %g2, 3, %g2
                wrpr    %g2, 0x0, %wstate

                /* We know %canrestore and %otherwin are both zero.  */

                sethi   %hi(sparc64_kern_pri_context), %g2
                ldx     [%g2 + %lo(sparc64_kern_pri_context)], %g2
                mov     PRIMARY_CONTEXT, %g1

661:            stxa    %g2, [%g1] ASI_DMMU
                .section .sun4v_1insn_patch, "ax"
                .word   661b
                stxa    %g2, [%g1] ASI_MMU
                .previous

                sethi   %hi(KERNBASE), %g1
                flush   %g1

                mov     %g4, %l4
                mov     %g5, %l5
                brnz,pn %g3, 1f
                 mov    %g3, %l3

                or      %g4, FAULT_CODE_WINFIXUP, %g4
                stb     %g4, [%g6 + TI_FAULT_CODE]
                stx     %g5, [%g6 + TI_FAULT_ADDR]
1:
                mov     %g6, %l1
                wrpr    %g0, 0x0, %tl

661:            nop
                .section                .sun4v_1insn_patch, "ax"
                .word                   661b
                SET_GL(0)
                .previous

661:            wrpr    %g0, RTRAP_PSTATE, %pstate
                .section                .sun_m7_1insn_patch, "ax"
                .word                   661b
                /* Re-enable PSTATE.mcde to maintain ADI security */
                wrpr    %g0, RTRAP_PSTATE|PSTATE_MCDE, %pstate
                .previous

                mov     %l1, %g6
                ldx     [%g6 + TI_TASK], %g4
                LOAD_PER_CPU_BASE(%g5, %g6, %g1, %g2, %g3)

                brnz,pn %l3, 1f
                 nop

                call    do_sparc64_fault
                 add    %sp, PTREGS_OFF, %o0
                ba,pt   %xcc, rtrap
                 nop

1:              cmp     %g3, 2
                bne,pn  %xcc, 2f
                 nop

                sethi   %hi(tlb_type), %g1
                lduw    [%g1 + %lo(tlb_type)], %g1
                cmp     %g1, 3
                bne,pt  %icc, 1f
                 add    %sp, PTREGS_OFF, %o0
                mov     %l4, %o2
                call    sun4v_do_mna
                 mov    %l5, %o1
                ba,a,pt %xcc, rtrap
1:              mov     %l4, %o1
                mov     %l5, %o2
                call    mem_address_unaligned
                 nop
                ba,a,pt %xcc, rtrap

2:              sethi   %hi(tlb_type), %g1
                mov     %l4, %o1
                lduw    [%g1 + %lo(tlb_type)], %g1
                mov     %l5, %o2
                cmp     %g1, 3
                bne,pt  %icc, 1f
                 add    %sp, PTREGS_OFF, %o0
                call    sun4v_data_access_exception
                 nop
                ba,a,pt %xcc, rtrap
                 nop

1:              call    spitfire_data_access_exception
                 nop
                ba,a,pt %xcc, rtrap