1/* SPDX-License-Identifier: GPL-2.0 */ 2#include <asm/thread_info.h> 3#include <asm/trap_block.h> 4#include <asm/spitfire.h> 5#include <asm/ptrace.h> 6#include <asm/head.h> 7 8 .text 9 .align 8 10 .globl user_rtt_fill_fixup_common 11user_rtt_fill_fixup_common: 12 rdpr %cwp, %g1 13 add %g1, 1, %g1 14 wrpr %g1, 0x0, %cwp 15 16 rdpr %wstate, %g2 17 sll %g2, 3, %g2 18 wrpr %g2, 0x0, %wstate 19 20 /* We know %canrestore and %otherwin are both zero. */ 21 22 sethi %hi(sparc64_kern_pri_context), %g2 23 ldx [%g2 + %lo(sparc64_kern_pri_context)], %g2 24 mov PRIMARY_CONTEXT, %g1 25 26661: stxa %g2, [%g1] ASI_DMMU 27 .section .sun4v_1insn_patch, "ax" 28 .word 661b 29 stxa %g2, [%g1] ASI_MMU 30 .previous 31 32 sethi %hi(KERNBASE), %g1 33 flush %g1 34 35 mov %g4, %l4 36 mov %g5, %l5 37 brnz,pn %g3, 1f 38 mov %g3, %l3 39 40 or %g4, FAULT_CODE_WINFIXUP, %g4 41 stb %g4, [%g6 + TI_FAULT_CODE] 42 stx %g5, [%g6 + TI_FAULT_ADDR] 431: 44 mov %g6, %l1 45 wrpr %g0, 0x0, %tl 46 47661: nop 48 .section .sun4v_1insn_patch, "ax" 49 .word 661b 50 SET_GL(0) 51 .previous 52 53 wrpr %g0, RTRAP_PSTATE, %pstate 54 55 mov %l1, %g6 56 ldx [%g6 + TI_TASK], %g4 57 LOAD_PER_CPU_BASE(%g5, %g6, %g1, %g2, %g3) 58 59 brnz,pn %l3, 1f 60 nop 61 62 call do_sparc64_fault 63 add %sp, PTREGS_OFF, %o0 64 ba,pt %xcc, rtrap 65 nop 66 671: cmp %g3, 2 68 bne,pn %xcc, 2f 69 nop 70 71 sethi %hi(tlb_type), %g1 72 lduw [%g1 + %lo(tlb_type)], %g1 73 cmp %g1, 3 74 bne,pt %icc, 1f 75 add %sp, PTREGS_OFF, %o0 76 mov %l4, %o2 77 call sun4v_do_mna 78 mov %l5, %o1 79 ba,a,pt %xcc, rtrap 801: mov %l4, %o1 81 mov %l5, %o2 82 call mem_address_unaligned 83 nop 84 ba,a,pt %xcc, rtrap 85 862: sethi %hi(tlb_type), %g1 87 mov %l4, %o1 88 lduw [%g1 + %lo(tlb_type)], %g1 89 mov %l5, %o2 90 cmp %g1, 3 91 bne,pt %icc, 1f 92 add %sp, PTREGS_OFF, %o0 93 call sun4v_data_access_exception 94 nop 95 ba,a,pt %xcc, rtrap 96 nop 97 981: call spitfire_data_access_exception 99 nop 100 ba,a,pt %xcc, rtrap 101