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- /* 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
- wrpr %g0, RTRAP_PSTATE, %pstate
- 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
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