Removed unneeded and unused old memory management assembly.
This commit is contained in:
Jonas 'Sortie' Termansen
parent
66192d1e86
commit
a1cf7e9dbc
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@ -1,163 +0,0 @@
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/******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along
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with Sortix. If not, see <http://www.gnu.org/licenses/>.
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memorymanagement-asm.s
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Handles memory for the x64 architecture.
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******************************************************************************/
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.section .text
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.globl _ZN6Sortix4Page11FragmentizeEv
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.type _ZN6Sortix4Page11FragmentizeEv, @function # namespace Sortix { namespace Page { void Fragmentize(); } }
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_ZN6Sortix4Page11FragmentizeEv:
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# Load the front of our linked list.
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movq _ZN6Sortix4Page15UnallocatedPageE, %rax # Load UnallocPage* Sortix::Page::UnallocatedPage
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FragLoop:
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testq %rax, %rax
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je FragDone
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movq 8(%rax), %rdx
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movq 16(%rax), %rbx
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testq %rbx, %rbx
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je FragNext
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movq %rax, %rcx
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addq $0x1000, %rcx
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movq %rcx, 8(%rax)
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decq %rbx
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FragFixupLoop:
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testq %rbx, %rbx
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je FragFixupLoopLastSwap
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movl $0xABBAACDC, 0(%rcx)
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addq $0x2000, %rax
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movq %rax, 8(%rcx)
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#movq $0, 16(%rcx)
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decq %rbx
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testq %rbx, %rbx
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je FragFixupLoopLast
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movl $0xABBAACDC, 0(%rax)
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addq $0x2000, %rcx
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movq %rcx, 8(%rax)
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#movq $0, 16(%rax)
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decq %rbx
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jmp FragFixupLoop
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FragFixupLoopLastSwap:
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movq %rcx, %rax
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FragFixupLoopLast:
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movl $0xABBAACDC, 0(%rax)
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movq %rdx, 8(%rax)
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FragNext:
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movq %rdx, %rax
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jmp FragLoop
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FragDone:
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ret
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.globl _ZN6Sortix4Page10GetPrivateEv
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.type _ZN6Sortix4Page10GetPrivateEv, @function # namespace Sortix { void Paging::Allocate(); }
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_ZN6Sortix4Page10GetPrivateEv:
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# Load the front of our linked list.
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movq _ZN6Sortix4Page15UnallocatedPageE, %rax # Load UnallocPage* Sortix::Page::UnallocatedPage
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# Test if we are out of memory.
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testq %rax, %rax
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je OutOfMem
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push %rbx
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push %rdi
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push %rsi
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# Disable virtual memory
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movq %cr0, %rdi
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movq %rdi, %rsi
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movabs $0xffffffff7fffffff, %rbx
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andq %rbx, %rsi
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movq %rsi, %cr0
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# Test if this page is unallocated, as a security measure.
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movl (%rax), %ebx
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cmpl $0xABBAACDC, %ebx
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jne MagicFailure
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# Prepare the next front element in our linked list.
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movq 8(%rax), %rdx
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jmp Done
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MagicFailure:
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# The magic header in our page was invalid!
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movq %rax, %rdx
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inc %rax # Set the lowest bit to signal a magic failure.
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# Panic the kernel.
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mov %rdx, %rsi
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mov %rbx, %rdx
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mov MagicFailureString, %rdi
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call PanicF
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Done:
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# Enable virtual memory here
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mov %rdi, %cr0
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# Update the front of our linked list to the next element.
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mov %rdx, _ZN6Sortix4Page15UnallocatedPageE # Save Load UnallocPage* Sortix::Page::UnallocatedPage
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ret
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OutOfMem:
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# We run out of memory. Return NULL.
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movq $0, %rax
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ret
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.globl _ZN6Sortix4Page10PutPrivateEm
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.type _ZN6Sortix4Page10PutPrivateEm, @function # namespace Sortix { void Paging::Free(void* Page); }
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_ZN6Sortix4Page10PutPrivateEm:
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movq _ZN6Sortix4Page15UnallocatedPageE, %rax # Load UnallocPage* Sortix::Page::UnallocatedPage
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# Disable virtual memory
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movq %cr0, %rcx
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movq %rcx, %rsi
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movabs $0xffffffff7fffffff, %rbx
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andq %rbx, %rsi
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movq %rsi, %cr0
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movl $0xABBAACDC, (%rdi)
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movq %rax, 8(%edx)
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#movl $0, 16(%edx)
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# Enable virtual memory
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movq %rcx, %cr0
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# Update the front of our linked list to the next element.
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movq %rdx, _ZN6Sortix4Page15UnallocatedPageE # Save Load UnallocPage* Sortix::Page::UnallocatedPage
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ret
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.section .data
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MagicFailureString:
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.asciz "A magic failure occured at 0x%p, where 0x%x was found instead of 0xABBAACDC!\n"
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@ -1,173 +0,0 @@
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/******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along
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with Sortix. If not, see <http://www.gnu.org/licenses/>.
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memorymanagement-asm.s
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Handles memory for the x86 architecture.
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******************************************************************************/
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.section .text
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.globl _ZN6Sortix4Page11FragmentizeEv
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.type _ZN6Sortix4Page11FragmentizeEv, @function # namespace Sortix { namespace Page { void Fragmentize(); } }
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_ZN6Sortix4Page11FragmentizeEv:
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push %ebx
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# Load the front of our linked list.
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mov _ZN6Sortix4Page15UnallocatedPageE, %eax # Load UnallocPage* Sortix::Page::UnallocatedPage
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FragLoop:
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testl %eax, %eax
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je FragDone
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movl 4(%eax), %edx
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movl 8(%eax), %ebx
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testl %ebx, %ebx
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je FragNext
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movl %eax, %ecx
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addl $0x1000, %ecx
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movl %ecx, 4(%eax)
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decl %ebx
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FragFixupLoop:
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testl %ebx, %ebx
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je FragFixupLoopLastSwap
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movl $0xABBAACDC, 0(%ecx)
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addl $0x2000, %eax
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movl %eax, 4(%ecx)
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#movl $0, 8(%ecx)
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decl %ebx
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testl %ebx, %ebx
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je FragFixupLoopLast
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movl $0xABBAACDC, 0(%eax)
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addl $0x2000, %ecx
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movl %ecx, 4(%eax)
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#movl $0, 8(%eax)
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decl %ebx
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jmp FragFixupLoop
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FragFixupLoopLastSwap:
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movl %ecx, %eax
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FragFixupLoopLast:
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movl $0xABBAACDC, 0(%eax)
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movl %edx, 4(%eax)
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FragNext:
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movl %edx, %eax
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jmp FragLoop
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FragDone:
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pop %ebx
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ret
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.globl _ZN6Sortix4Page10GetPrivateEv
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.type _ZN6Sortix4Page10GetPrivateEv, @function # namespace Sortix { void Paging::Allocate(); }
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_ZN6Sortix4Page10GetPrivateEv:
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# Load the front of our linked list.
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mov _ZN6Sortix4Page15UnallocatedPageE, %eax # Load UnallocPage* Sortix::Page::UnallocatedPage
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# Test if we are out of memory.
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testl %eax, %eax
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je OutOfMem
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push %ebx
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push %edi
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push %esi
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# Disable virtual memory
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mov %cr0, %edi
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mov %edi, %esi
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and $0x7FFFFFFF, %esi
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mov %esi, %cr0
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# Test if this page is unallocated, as a security measure.
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movl (%eax), %ebx
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cmpl $0xABBAACDC, %ebx
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jne MagicFailure
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# Prepare the next front element in our linked list.
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movl 4(%eax), %edx
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jmp Done
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MagicFailure:
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# The magic header in our page was invalid!
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movl %eax, %edx
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inc %eax # Set the lowest bit to signal a magic failure.
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# Panic the kernel.
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pushl %ebx
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pushl %edx
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pushl MagicFailureString
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call PanicF
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Done:
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# Enable virtual memory here
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mov %edi, %cr0
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# Update the front of our linked list to the next element.
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mov %edx, _ZN6Sortix4Page15UnallocatedPageE # Save Load UnallocPage* Sortix::Page::UnallocatedPage
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pop %esi
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pop %edi
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pop %ebx
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ret
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OutOfMem:
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# We run out of memory. Return NULL.
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movl $0, %eax
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ret
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.globl _ZN6Sortix4Page10PutPrivateEm
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.type _ZN6Sortix4Page10PutPrivateEm, @function # namespace Sortix { void Paging::Free(void* Page); }
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_ZN6Sortix4Page10PutPrivateEm:
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push %esi
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mov _ZN6Sortix4Page15UnallocatedPageE, %eax # Load UnallocPage* Sortix::Page::UnallocatedPage
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mov 0x8(%esp), %edx
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# Disable virtual memory
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mov %cr0, %ecx
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mov %ecx, %esi
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and $0x7FFFFFFF, %esi
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mov %esi, %cr0
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movl $0xABBAACDC, (%edx)
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movl %eax, 4(%edx)
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#movl $0, 8(%edx)
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# Enable virtual memory
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mov %ecx, %cr0
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# Update the front of our linked list to the next element.
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mov %edx, _ZN6Sortix4Page15UnallocatedPageE # Save Load UnallocPage* Sortix::Page::UnallocatedPage
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pop %esi
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ret
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.section .data
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MagicFailureString:
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.asciz "Test!"
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.asciz "Test2!\0"
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.asciz "A magic failure occured at 0x%p, where 0x%x was found instead of 0xABBAACDC!\n"
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