ACIL FM

Nama	Ukuran	Aksi
clk.py	2.46 MB	View DL Edit
config.py	1.27 MB	View DL Edit
constants.py.in	3.15 MB	View DL Edit
cpus.py	5.2 MB	View DL Edit
device.py	5.65 MB	View DL Edit
dmesg.py	5.82 MB	View DL Edit
genpd.py	2.52 MB	View DL Edit
lists.py	4.16 MB	View DL Edit
Makefile	667 B	View DL Edit
mm.py	13.98 MB	View DL Edit
modules.py	2.75 MB	View DL Edit
pgtable.py	10.08 MB	View DL Edit
proc.py	8.54 MB	View DL Edit
rbtree.py	4.25 MB	View DL Edit
symbols.py	6.92 MB	View DL Edit
tasks.py	3.55 MB	View DL Edit
timerlist.py	7.55 MB	View DL Edit
utils.py	5.03 MB	View DL Edit
__init__.py	55 B	View DL Edit

Edit file: /usr/src/kernels/5.14.0-611.27.1.el9_7.x86_64/scripts/gdb/linux/mm.py

# SPDX-License-Identifier: GPL-2.0
#
# Copyright (c) 2023 MediaTek Inc.
#
# Authors:
#  Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
#

import gdb
import math
from linux import utils, constants

def DIV_ROUND_UP(n,d):
    return ((n) + (d) - 1) // (d)

def test_bit(nr, addr):
    if addr.dereference() & (0x1 << nr):
        return True
    else:
        return False

class page_ops():
    ops = None
    def __init__(self):
        if not constants.LX_CONFIG_SPARSEMEM_VMEMMAP:
            raise gdb.GdbError('Only support CONFIG_SPARSEMEM_VMEMMAP now')
        if constants.LX_CONFIG_ARM64 and utils.is_target_arch('aarch64'):
            self.ops = aarch64_page_ops()
        else:
            raise gdb.GdbError('Only support aarch64 now')

class aarch64_page_ops():
    def __init__(self):
        self.SUBSECTION_SHIFT = 21
        self.SEBSECTION_SIZE = 1 << self.SUBSECTION_SHIFT
        self.MODULES_VSIZE = 128 * 1024 * 1024

if constants.LX_CONFIG_ARM64_64K_PAGES:
            self.SECTION_SIZE_BITS = 29
        else:
            self.SECTION_SIZE_BITS = 27
        self.MAX_PHYSMEM_BITS = constants.LX_CONFIG_ARM64_VA_BITS

self.PAGE_SHIFT = constants.LX_CONFIG_ARM64_PAGE_SHIFT
        self.PAGE_SIZE = 1 << self.PAGE_SHIFT
        self.PAGE_MASK = (~(self.PAGE_SIZE - 1)) & ((1 << 64) - 1)

self.VA_BITS = constants.LX_CONFIG_ARM64_VA_BITS
        if self.VA_BITS > 48:
            if constants.LX_CONFIG_ARM64_16K_PAGES:
                self.VA_BITS_MIN = 47
            else:
                self.VA_BITS_MIN = 48
            tcr_el1 = gdb.execute("info registers $TCR_EL1", to_string=True)
            tcr_el1 = int(tcr_el1.split()[1], 16)
            self.vabits_actual = 64 - ((tcr_el1 >> 16) & 63)
        else:
            self.VA_BITS_MIN = self.VA_BITS
            self.vabits_actual = self.VA_BITS
        self.kimage_voffset = gdb.parse_and_eval('kimage_voffset') & ((1 << 64) - 1)

self.SECTIONS_SHIFT = self.MAX_PHYSMEM_BITS - self.SECTION_SIZE_BITS

if str(constants.LX_CONFIG_ARCH_FORCE_MAX_ORDER).isdigit():
            self.MAX_ORDER = constants.LX_CONFIG_ARCH_FORCE_MAX_ORDER
        else:
            self.MAX_ORDER = 10

self.MAX_ORDER_NR_PAGES = 1 << (self.MAX_ORDER)
        self.PFN_SECTION_SHIFT = self.SECTION_SIZE_BITS - self.PAGE_SHIFT
        self.NR_MEM_SECTIONS = 1 << self.SECTIONS_SHIFT
        self.PAGES_PER_SECTION = 1 << self.PFN_SECTION_SHIFT
        self.PAGE_SECTION_MASK = (~(self.PAGES_PER_SECTION - 1)) & ((1 << 64) - 1)

if constants.LX_CONFIG_SPARSEMEM_EXTREME:
            self.SECTIONS_PER_ROOT = self.PAGE_SIZE // gdb.lookup_type("struct mem_section").sizeof
        else:
            self.SECTIONS_PER_ROOT = 1

self.NR_SECTION_ROOTS = DIV_ROUND_UP(self.NR_MEM_SECTIONS, self.SECTIONS_PER_ROOT)
        self.SECTION_ROOT_MASK = self.SECTIONS_PER_ROOT - 1
        self.SUBSECTION_SHIFT = 21
        self.SEBSECTION_SIZE = 1 << self.SUBSECTION_SHIFT
        self.PFN_SUBSECTION_SHIFT = self.SUBSECTION_SHIFT - self.PAGE_SHIFT
        self.PAGES_PER_SUBSECTION = 1 << self.PFN_SUBSECTION_SHIFT

self.SECTION_HAS_MEM_MAP = 1 << int(gdb.parse_and_eval('SECTION_HAS_MEM_MAP_BIT'))
        self.SECTION_IS_EARLY = 1 << int(gdb.parse_and_eval('SECTION_IS_EARLY_BIT'))

self.struct_page_size = utils.get_page_type().sizeof
        self.STRUCT_PAGE_MAX_SHIFT = (int)(math.log(self.struct_page_size, 2))

self.PAGE_OFFSET = self._PAGE_OFFSET(self.VA_BITS)
        self.MODULES_VADDR = self._PAGE_END(self.VA_BITS_MIN)
        self.MODULES_END = self.MODULES_VADDR + self.MODULES_VSIZE

self.VMEMMAP_RANGE = self._PAGE_END(self.VA_BITS_MIN) - self.PAGE_OFFSET
        self.VMEMMAP_SIZE = (self.VMEMMAP_RANGE >> self.PAGE_SHIFT) * self.struct_page_size
        self.VMEMMAP_END = (-(1 * 1024 * 1024 * 1024)) & 0xffffffffffffffff
        self.VMEMMAP_START = self.VMEMMAP_END - self.VMEMMAP_SIZE

self.VMALLOC_START = self.MODULES_END
        self.VMALLOC_END = self.VMEMMAP_START - 256 * 1024 * 1024

self.memstart_addr = gdb.parse_and_eval("memstart_addr")
        self.PHYS_OFFSET = self.memstart_addr
        self.vmemmap = gdb.Value(self.VMEMMAP_START).cast(utils.get_page_type().pointer()) - (self.memstart_addr >> self.PAGE_SHIFT)

self.KERNEL_START = gdb.parse_and_eval("_text")
        self.KERNEL_END = gdb.parse_and_eval("_end")

if constants.LX_CONFIG_KASAN_GENERIC or constants.LX_CONFIG_KASAN_SW_TAGS:
            if constants.LX_CONFIG_KASAN_GENERIC:
                self.KASAN_SHADOW_SCALE_SHIFT = 3
            else:
                self.KASAN_SHADOW_SCALE_SHIFT = 4
            self.KASAN_SHADOW_OFFSET = constants.LX_CONFIG_KASAN_SHADOW_OFFSET
            self.KASAN_SHADOW_END = (1 << (64 - self.KASAN_SHADOW_SCALE_SHIFT)) + self.KASAN_SHADOW_OFFSET
            self.PAGE_END = self.KASAN_SHADOW_END - (1 << (self.vabits_actual - self.KASAN_SHADOW_SCALE_SHIFT))
        else:
            self.PAGE_END = self._PAGE_END(self.VA_BITS_MIN)

if constants.LX_CONFIG_NUMA and constants.LX_CONFIG_NODES_SHIFT:
            self.NODE_SHIFT = constants.LX_CONFIG_NODES_SHIFT
        else:
            self.NODE_SHIFT = 0

self.MAX_NUMNODES = 1 << self.NODE_SHIFT

def SECTION_NR_TO_ROOT(self, sec):
        return sec // self.SECTIONS_PER_ROOT

def __nr_to_section(self, nr):
        root = self.SECTION_NR_TO_ROOT(nr)
        mem_section = gdb.parse_and_eval("mem_section")
        return mem_section[root][nr & self.SECTION_ROOT_MASK]

def pfn_to_section_nr(self, pfn):
        return pfn >> self.PFN_SECTION_SHIFT

def section_nr_to_pfn(self, sec):
        return sec << self.PFN_SECTION_SHIFT

def __pfn_to_section(self, pfn):
        return self.__nr_to_section(self.pfn_to_section_nr(pfn))

def pfn_to_section(self, pfn):
        return self.__pfn_to_section(pfn)

def subsection_map_index(self, pfn):
        return (pfn & ~(self.PAGE_SECTION_MASK)) // self.PAGES_PER_SUBSECTION

def pfn_section_valid(self, ms, pfn):
        if constants.LX_CONFIG_SPARSEMEM_VMEMMAP:
            idx = self.subsection_map_index(pfn)
            return test_bit(idx, ms['usage']['subsection_map'])
        else:
            return True

def valid_section(self, mem_section):
        if mem_section != None and (mem_section['section_mem_map'] & self.SECTION_HAS_MEM_MAP):
            return True
        return False

def early_section(self, mem_section):
        if mem_section != None and (mem_section['section_mem_map'] & self.SECTION_IS_EARLY):
            return True
        return False

def pfn_valid(self, pfn):
        ms = None
        if self.PHYS_PFN(self.PFN_PHYS(pfn)) != pfn:
            return False
        if self.pfn_to_section_nr(pfn) >= self.NR_MEM_SECTIONS:
            return False
        ms = self.__pfn_to_section(pfn)

if not self.valid_section(ms):
            return False
        return self.early_section(ms) or self.pfn_section_valid(ms, pfn)

def _PAGE_OFFSET(self, va):
        return (-(1 << (va))) & 0xffffffffffffffff

def _PAGE_END(self, va):
        return (-(1 << (va - 1))) & 0xffffffffffffffff

def kasan_reset_tag(self, addr):
        if constants.LX_CONFIG_KASAN_SW_TAGS or constants.LX_CONFIG_KASAN_HW_TAGS:
            return int(addr) | (0xff << 56)
        else:
            return addr

def __is_lm_address(self, addr):
        if (addr - self.PAGE_OFFSET) < (self.PAGE_END - self.PAGE_OFFSET):
            return True
        else:
            return False
    def __lm_to_phys(self, addr):
        return addr - self.PAGE_OFFSET + self.PHYS_OFFSET

def __kimg_to_phys(self, addr):
        return addr - self.kimage_voffset

def __virt_to_phys_nodebug(self, va):
        untagged_va = self.kasan_reset_tag(va)
        if self.__is_lm_address(untagged_va):
            return self.__lm_to_phys(untagged_va)
        else:
            return self.__kimg_to_phys(untagged_va)

def __virt_to_phys(self, va):
        if constants.LX_CONFIG_DEBUG_VIRTUAL:
            if not self.__is_lm_address(self.kasan_reset_tag(va)):
                raise gdb.GdbError("Warning: virt_to_phys used for non-linear address: 0x%lx\n" % va)
        return self.__virt_to_phys_nodebug(va)

def virt_to_phys(self, va):
        return self.__virt_to_phys(va)

def PFN_PHYS(self, pfn):
        return pfn << self.PAGE_SHIFT

def PHYS_PFN(self, phys):
        return phys >> self.PAGE_SHIFT

def __phys_to_virt(self, pa):
        return (pa - self.PHYS_OFFSET) | self.PAGE_OFFSET

def __phys_to_pfn(self, pa):
        return self.PHYS_PFN(pa)

def __pfn_to_phys(self, pfn):
        return self.PFN_PHYS(pfn)

def __pa_symbol_nodebug(self, x):
        return self.__kimg_to_phys(x)

def __phys_addr_symbol(self, x):
        if constants.LX_CONFIG_DEBUG_VIRTUAL:
            if x < self.KERNEL_START or x > self.KERNEL_END:
                raise gdb.GdbError("0x%x exceed kernel range" % x)
        return self.__pa_symbol_nodebug(x)

def __pa_symbol(self, x):
        return self.__phys_addr_symbol(x)

def __va(self, pa):
        return self.__phys_to_virt(pa)

def pfn_to_kaddr(self, pfn):
        return self.__va(pfn << self.PAGE_SHIFT)

def virt_to_pfn(self, va):
        return self.__phys_to_pfn(self.__virt_to_phys(va))

def sym_to_pfn(self, x):
        return self.__phys_to_pfn(self.__pa_symbol(x))

def page_to_pfn(self, page):
        return int(page.cast(utils.get_page_type().pointer()) - self.vmemmap.cast(utils.get_page_type().pointer()))

def page_to_phys(self, page):
        return self.__pfn_to_phys(self.page_to_pfn(page))

def pfn_to_page(self, pfn):
        return (self.vmemmap + pfn).cast(utils.get_page_type().pointer())

def page_to_virt(self, page):
        if constants.LX_CONFIG_DEBUG_VIRTUAL:
            return self.__va(self.page_to_phys(page))
        else:
            __idx = int((page.cast(gdb.lookup_type("unsigned long")) - self.VMEMMAP_START).cast(utils.get_ulong_type())) // self.struct_page_size
            return self.PAGE_OFFSET + (__idx * self.PAGE_SIZE)

def virt_to_page(self, va):
        if constants.LX_CONFIG_DEBUG_VIRTUAL:
            return self.pfn_to_page(self.virt_to_pfn(va))
        else:
            __idx = int(self.kasan_reset_tag(va) - self.PAGE_OFFSET) // self.PAGE_SIZE
            addr = self.VMEMMAP_START + (__idx * self.struct_page_size)
            return gdb.Value(addr).cast(utils.get_page_type().pointer())

def page_address(self, page):
        return self.page_to_virt(page)

def folio_address(self, folio):
        return self.page_address(folio['page'].address)

class LxPFN2Page(gdb.Command):
    """PFN to struct page"""

def __init__(self):
        super(LxPFN2Page, self).__init__("lx-pfn_to_page", gdb.COMMAND_USER)

def invoke(self, arg, from_tty):
        argv = gdb.string_to_argv(arg)
        pfn = int(argv[0])
        page = page_ops().ops.pfn_to_page(pfn)
        gdb.write("pfn_to_page(0x%x) = 0x%x\n" % (pfn, page))

LxPFN2Page()

class LxPage2PFN(gdb.Command):
    """struct page to PFN"""

def __init__(self):
        super(LxPage2PFN, self).__init__("lx-page_to_pfn", gdb.COMMAND_USER)

def invoke(self, arg, from_tty):
        argv = gdb.string_to_argv(arg)
        struct_page_addr = int(argv[0], 16)
        page = gdb.Value(struct_page_addr).cast(utils.get_page_type().pointer())
        pfn = page_ops().ops.page_to_pfn(page)
        gdb.write("page_to_pfn(0x%x) = 0x%x\n" % (page, pfn))

LxPage2PFN()

class LxPageAddress(gdb.Command):
    """struct page to linear mapping address"""

def __init__(self):
        super(LxPageAddress, self).__init__("lx-page_address", gdb.COMMAND_USER)

def invoke(self, arg, from_tty):
        argv = gdb.string_to_argv(arg)
        struct_page_addr = int(argv[0], 16)
        page = gdb.Value(struct_page_addr).cast(utils.get_page_type().pointer())
        addr = page_ops().ops.page_address(page)
        gdb.write("page_address(0x%x) = 0x%x\n" % (page, addr))

LxPageAddress()

class LxPage2Phys(gdb.Command):
    """struct page to physical address"""

def __init__(self):
        super(LxPage2Phys, self).__init__("lx-page_to_phys", gdb.COMMAND_USER)

def invoke(self, arg, from_tty):
        argv = gdb.string_to_argv(arg)
        struct_page_addr = int(argv[0], 16)
        page = gdb.Value(struct_page_addr).cast(utils.get_page_type().pointer())
        phys_addr = page_ops().ops.page_to_phys(page)
        gdb.write("page_to_phys(0x%x) = 0x%x\n" % (page, phys_addr))

LxPage2Phys()

class LxVirt2Phys(gdb.Command):
    """virtual address to physical address"""

def __init__(self):
        super(LxVirt2Phys, self).__init__("lx-virt_to_phys", gdb.COMMAND_USER)

def invoke(self, arg, from_tty):
        argv = gdb.string_to_argv(arg)
        linear_addr = int(argv[0], 16)
        phys_addr = page_ops().ops.virt_to_phys(linear_addr)
        gdb.write("virt_to_phys(0x%x) = 0x%x\n" % (linear_addr, phys_addr))

LxVirt2Phys()

class LxVirt2Page(gdb.Command):
    """virtual address to struct page"""

def __init__(self):
        super(LxVirt2Page, self).__init__("lx-virt_to_page", gdb.COMMAND_USER)

def invoke(self, arg, from_tty):
        argv = gdb.string_to_argv(arg)
        linear_addr = int(argv[0], 16)
        page = page_ops().ops.virt_to_page(linear_addr)
        gdb.write("virt_to_page(0x%x) = 0x%x\n" % (linear_addr, page))

LxVirt2Page()

class LxSym2PFN(gdb.Command):
    """symbol address to PFN"""

def __init__(self):
        super(LxSym2PFN, self).__init__("lx-sym_to_pfn", gdb.COMMAND_USER)

def invoke(self, arg, from_tty):
        argv = gdb.string_to_argv(arg)
        sym_addr = int(argv[0], 16)
        pfn = page_ops().ops.sym_to_pfn(sym_addr)
        gdb.write("sym_to_pfn(0x%x) = %d\n" % (sym_addr, pfn))

LxSym2PFN()

class LxPFN2Kaddr(gdb.Command):
    """PFN to kernel address"""

def __init__(self):
        super(LxPFN2Kaddr, self).__init__("lx-pfn_to_kaddr", gdb.COMMAND_USER)

def invoke(self, arg, from_tty):
        argv = gdb.string_to_argv(arg)
        pfn = int(argv[0])
        kaddr = page_ops().ops.pfn_to_kaddr(pfn)
        gdb.write("pfn_to_kaddr(%d) = 0x%x\n" % (pfn, kaddr))

LxPFN2Kaddr()

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