diff options
Diffstat (limited to 'arch/mips64/kernel/r4k_tlb.S')
| -rw-r--r-- | arch/mips64/kernel/r4k_tlb.S | 135 |
1 files changed, 1 insertions, 134 deletions
diff --git a/arch/mips64/kernel/r4k_tlb.S b/arch/mips64/kernel/r4k_tlb.S index a8ea18523..2baa35ca1 100644 --- a/arch/mips64/kernel/r4k_tlb.S +++ b/arch/mips64/kernel/r4k_tlb.S @@ -1,4 +1,4 @@ -/* $Id$ +/* $Id: r4k_tlb.S,v 1.1 2000/05/25 19:33:16 ulfc Exp $ * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive @@ -21,31 +21,6 @@ * After this macro runs we have a pointer to the pte of the address * that caused the fault in in PTR. */ - .macro LOAD_PTE, ptr, tmp -#ifdef CONFIG_SMP - mfc0 \tmp, CP0_CONTEXT - dla \ptr, pgd_current - dsrl \tmp, 23 - daddu \ptr, \tmp -#else - dla \ptr, pgd_current -#endif - dmfc0 \tmp, CP0_BADVADDR - ld \ptr, (\ptr) - dsrl \tmp, 28 # get pgd offset - andi \tmp, 0x1ff8 - daddu \ptr, \tmp # add in pgd offset - dmfc0 \tmp, CP0_BADVADDR - ld \ptr, (\ptr) # get pmd pointer - dsrl \tmp, 18 # get pmd offset - andi \tmp, 0x1ff8 - daddu \ptr, \tmp # add in pmd offset - dmfc0 \tmp, CP0_BADVADDR - ld \ptr, (\ptr) # get pte pointer - dsrl \tmp, 9 - andi \tmp, 0xff8 # get pte offset - daddu \ptr, \tmp - .endm .macro LOAD_PTE2, ptr, tmp #ifdef CONFIG_SMP @@ -83,50 +58,6 @@ dmtc0 \pte1, CP0_ENTRYLO1 # load it .endm - .macro DO_FAULT, write - SAVE_ALL - dmfc0 a2, CP0_BADVADDR - STI - .set at - move a0, sp - jal do_page_fault - li a1, \write - j ret_from_sys_call - nop - .set noat - .endm - - /* Check if PTE is present, if not jump to LABEL. */ - .macro PTE_PRESENT, pte, ptr, label - andi \pte, (_PAGE_PRESENT | _PAGE_READ) - xori \pte, (_PAGE_PRESENT | _PAGE_READ) - bnez \pte, \label - nop - ld \pte, (\ptr) - .endm - - /* Mark PTE as valid, and save in PTR. */ - .macro PTE_MAKEVALID, pte, ptr - ori \pte, (_PAGE_VALID | _PAGE_ACCESSED) - sd \pte, (\ptr) - .endm - - /* Check if PTE is writable, if not jump to LABEL. */ - .macro PTE_WRITEABLE, pte, ptr, label - andi \pte, (_PAGE_PRESENT | _PAGE_WRITE) - xori \pte, (_PAGE_PRESENT | _PAGE_WRITE) - bnez \pte, \label - nop - ld \pte, (\ptr) - .endm - - /* Mark PTE as writable, and save in PTR. */ - .macro PTE_MAKEWRITE, pte, ptr - ori \pte, (_PAGE_ACCESSED | _PAGE_MODIFIED | _PAGE_VALID | \ - _PAGE_DIRTY) - sd \pte, (\ptr) - .endm - .text .set noreorder .set mips3 @@ -151,67 +82,3 @@ FEXPORT(except_vec1_r10k) nop tlbwr eret - - .align 5 -FEXPORT(handle_tlbl) - .set noat - LOAD_PTE k1 k0 - nop - tlbp - ld k0, 0(k1) - PTE_PRESENT k0 k1 nopage_tlbl - PTE_MAKEVALID k0 k1 - ori k1, 0xf - xori k1, 0xf - ld k0, 0(k1) - ld k1, 8(k1) - PTE_RELOAD k0 k1 - nop - tlbwi - nop - eret - -nopage_tlbl: - DO_FAULT 0 - - .align 5 -FEXPORT(handle_tlbs) - .set noat - LOAD_PTE k1 k0 - nop - tlbp - ld k0, 0(k1) - PTE_WRITEABLE k0 k1 nopage_tlbs - PTE_MAKEWRITE k0 k1 - ori k1, 0xf - xori k1, 0xf - ld k0, 0(k1) - ld k1, 8(k1) - PTE_RELOAD k0 k1 - nop - tlbwi - eret - -nopage_tlbs: - DO_FAULT 1 - - .align 5 -FEXPORT(handle_mod) - .set noat - LOAD_PTE k1 k0 - nop - tlbp - ld k0, 0(k1) - PTE_WRITEABLE k0 k1 nowrite_mod - PTE_MAKEWRITE k0 k1 - ori k1, 0xf - xori k1, 0xf - ld k0, 0(k1) - ld k1, 8(k1) - PTE_RELOAD k0 k1 - nop - tlbwi - eret - -nowrite_mod: - DO_FAULT 1 |