| /* 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 |
