mirror of
https://github.com/crash-utility/crash
synced 2025-02-23 08:56:48 +00:00
Updated the ARM64 implementation to support Linux 3.13 and later
kernels that expand to a 42-bit address space when 64K pages are configured. This is also the first crash version that has been tested on a live ARM64 system with 4K pages, where it cleanly make it to the "crash>" prompt. However, it should be noted that some commands (most notably "bt") still do not work as of yet. (anderson@redhat.com)
This commit is contained in:
Dave Anderson
parent
3095a02308
commit
0f6d989aa0
104
arm64.c
104
arm64.c
@ -1,8 +1,8 @@
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/*
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* arm64.c - core analysis suite
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*
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* Copyright (C) 2012,2013 David Anderson
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* Copyright (C) 2012,2013 Red Hat, Inc. All rights reserved.
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* Copyright (C) 2012-2014 David Anderson
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* Copyright (C) 2012-2014 Red Hat, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -95,6 +95,17 @@ arm64_init(int when)
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switch (machdep->pagesize)
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{
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case 4096:
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machdep->machspec->userspace_top = ARM64_USERSPACE_TOP_4K;
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machdep->machspec->page_offset = ARM64_PAGE_OFFSET_4K;
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machdep->machspec->vmalloc_start_addr = ARM64_VMALLOC_START_4K;
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machdep->machspec->vmalloc_end = ARM64_VMALLOC_END_4K;
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machdep->machspec->vmemmap_vaddr = ARM64_VMEMMAP_VADDR_4K;
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machdep->machspec->vmemmap_end = ARM64_VMEMMAP_END_4K;
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machdep->machspec->modules_vaddr = ARM64_MODULES_VADDR_4K;
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machdep->machspec->modules_end = ARM64_MODULES_END_4K;
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machdep->kvbase = ARM64_VMALLOC_START_4K;
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machdep->identity_map_base = ARM64_PAGE_OFFSET_4K;
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machdep->flags |= VM_L3_4K;
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machdep->ptrs_per_pgd = PTRS_PER_PGD_L3_4K;
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if ((machdep->pgd =
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@ -110,6 +121,17 @@ arm64_init(int when)
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break;
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case 65536:
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machdep->machspec->userspace_top = ARM64_USERSPACE_TOP_64K;
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machdep->machspec->page_offset = ARM64_PAGE_OFFSET_64K;
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machdep->machspec->vmalloc_start_addr = ARM64_VMALLOC_START_64K;
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machdep->machspec->vmalloc_end = ARM64_VMALLOC_END_64K;
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machdep->machspec->vmemmap_vaddr = ARM64_VMEMMAP_VADDR_64K;
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machdep->machspec->vmemmap_end = ARM64_VMEMMAP_END_64K;
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machdep->machspec->modules_vaddr = ARM64_MODULES_VADDR_64K;
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machdep->machspec->modules_end = ARM64_MODULES_END_64K;
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machdep->kvbase = ARM64_VMALLOC_START_64K;
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machdep->identity_map_base = ARM64_PAGE_OFFSET_64K;
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machdep->flags |= VM_L2_64K;
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machdep->ptrs_per_pgd = PTRS_PER_PGD_L2_64K;
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if ((machdep->pgd =
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@ -133,17 +155,7 @@ arm64_init(int when)
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machdep->clear_machdep_cache = arm64_clear_machdep_cache;
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machdep->stacksize = ARM64_STACK_SIZE;
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machdep->machspec->userspace_top = ARM64_USERSPACE_TOP;
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machdep->machspec->page_offset = ARM64_PAGE_OFFSET;
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machdep->machspec->vmalloc_start_addr = ARM64_VMALLOC_START;
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machdep->machspec->vmalloc_end = ARM64_VMALLOC_END;
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machdep->machspec->vmemmap_vaddr = ARM64_VMEMMAP_VADDR;
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machdep->machspec->vmemmap_end = ARM64_VMEMMAP_END;
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machdep->machspec->modules_vaddr = ARM64_MODULES_VADDR;
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machdep->machspec->modules_end = ARM64_MODULES_END;
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machdep->kvbase = ARM64_VMALLOC_START;
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machdep->identity_map_base = ARM64_PAGE_OFFSET;
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machdep->flags |= VMEMMAP;
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arm64_calc_phys_offset();
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@ -215,7 +227,8 @@ arm64_init(int when)
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case LOG_ONLY:
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machdep->machspec = &arm64_machine_specific;
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machdep->identity_map_base = ARM64_PAGE_OFFSET;
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error(FATAL, "crash --log not implemented on ARM64: TBD\n");
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/* machdep->identity_map_base = ARM64_PAGE_OFFSET; */
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arm64_calc_phys_offset();
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break;
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}
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@ -227,25 +240,19 @@ arm64_init(int when)
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static int
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arm64_verify_symbol(const char *name, ulong value, char type)
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{
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// if (STREQ(name, "swapper_pg_dir"))
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// machdep->flags |= KSYMS_START;
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//
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// if (!name || !strlen(name) || !(machdep->flags & KSYMS_START))
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// return FALSE;
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//
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// if (STREQ(name, "$a") || STREQ(name, "$n") || STREQ(name, "$d"))
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// return FALSE;
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//
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// if (STREQ(name, "PRRR") || STREQ(name, "NMRR"))
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// return FALSE;
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//
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// if ((type == 'A') && STRNEQ(name, "__crc_"))
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// return FALSE;
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//
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// if (CRASHDEBUG(8) && name && strlen(name))
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// fprintf(fp, "%08lx %s\n", value, name);
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//
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NOT_IMPLEMENTED(WARNING);
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if (!name || !strlen(name))
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return FALSE;
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if ((value == 0) &&
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((type == 'a') || (type == 'n') || (type == 'N') || (type == 'U')))
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return FALSE;
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if (STREQ(name, "$d") || STREQ(name, "$x"))
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return FALSE;
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if (!(machdep->flags & KSYMS_START) && STREQ(name, "idmap_pg_dir"))
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machdep->flags |= KSYMS_START;
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return TRUE;
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}
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@ -269,7 +276,7 @@ arm64_dump_machdep_table(ulong arg)
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fprintf(fp, ")\n");
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fprintf(fp, " kvbase: %lx\n", machdep->kvbase);
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fprintf(fp, " identity_map_base: %lx\n", machdep->kvbase);
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fprintf(fp, " identity_map_base: %lx\n", machdep->identity_map_base);
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fprintf(fp, " pagesize: %d\n", machdep->pagesize);
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fprintf(fp, " pageshift: %d\n", machdep->pageshift);
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fprintf(fp, " pagemask: %lx\n", (ulong)machdep->pagemask);
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@ -730,7 +737,7 @@ static void
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arm64_stackframe_init(void)
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{
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long task_struct_thread;
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long thread_struct_context;
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long thread_struct_cpu_context;
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long context_sp, context_pc, context_fp;
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STRUCT_SIZE_INIT(note_buf, "note_buf_t");
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@ -744,10 +751,10 @@ arm64_stackframe_init(void)
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symbol_value("__exception_text_end");
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task_struct_thread = MEMBER_OFFSET("task_struct", "thread");
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thread_struct_context = MEMBER_OFFSET("thread_struct", "context");
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thread_struct_cpu_context = MEMBER_OFFSET("thread_struct", "cpu_context");
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if ((task_struct_thread == INVALID_OFFSET) ||
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(thread_struct_context == INVALID_OFFSET)) {
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(thread_struct_cpu_context == INVALID_OFFSET)) {
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error(INFO,
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"cannot determine task_struct.thread.context offset\n");
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return;
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@ -788,11 +795,11 @@ arm64_stackframe_init(void)
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return;
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}
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ASSIGN_OFFSET(task_struct_thread_context_sp) =
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task_struct_thread + thread_struct_context + context_sp;
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task_struct_thread + thread_struct_cpu_context + context_sp;
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ASSIGN_OFFSET(task_struct_thread_context_fp) =
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task_struct_thread + thread_struct_context + context_fp;
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task_struct_thread + thread_struct_cpu_context + context_fp;
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ASSIGN_OFFSET(task_struct_thread_context_pc) =
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task_struct_thread + thread_struct_context + context_pc;
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task_struct_thread + thread_struct_cpu_context + context_pc;
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}
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static int arm64_eframe_search(struct bt_info *bt)
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@ -1056,7 +1063,7 @@ arm64_translate_pte(ulong pte, void *physaddr, ulonglong unused)
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static ulong
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arm64_vmalloc_start(void)
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{
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return ARM64_VMALLOC_START;
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return machdep->machspec->vmalloc_start_addr;
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}
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/*
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@ -1168,9 +1175,10 @@ arm64_display_machine_stats(void)
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fprintf(fp, " PROCESSOR SPEED: %ld Mhz\n", mhz);
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fprintf(fp, " HZ: %d\n", machdep->hz);
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fprintf(fp, " PAGE SIZE: %d\n", PAGESIZE());
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fprintf(fp, "KERNEL VIRTUAL BASE: %lx\n", ARM64_PAGE_OFFSET);
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fprintf(fp, "KERNEL VMALLOC BASE: %lx\n", ARM64_VMALLOC_START);
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fprintf(fp, "KERNEL MODULES BASE: %lx\n", ARM64_MODULES_VADDR);
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fprintf(fp, "KERNEL VIRTUAL BASE: %lx\n", machdep->machspec->page_offset);
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fprintf(fp, "KERNEL VMALLOC BASE: %lx\n", machdep->machspec->vmalloc_start_addr);
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fprintf(fp, "KERNEL MODULES BASE: %lx\n", machdep->machspec->modules_vaddr);
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fprintf(fp, "KERNEL VMEMMAP BASE: %lx\n", machdep->machspec->vmemmap_vaddr);
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fprintf(fp, " KERNEL STACK SIZE: %ld\n", STACKSIZE());
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}
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@ -1341,10 +1349,12 @@ arm64_get_kvaddr_ranges(struct vaddr_range *vrp)
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int
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arm64_IS_VMALLOC_ADDR(ulong vaddr)
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{
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return ((vaddr >= ARM64_VMALLOC_START && vaddr <= ARM64_VMALLOC_END) ||
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struct machine_specific *ms = machdep->machspec;
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return ((vaddr >= ms->vmalloc_start_addr && vaddr <= ms->vmalloc_end) ||
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((machdep->flags & VMEMMAP) &&
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(vaddr >= ARM64_VMEMMAP_VADDR && vaddr <= ARM64_VMEMMAP_END)) ||
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(vaddr >= ARM64_MODULES_VADDR && vaddr <= ARM64_MODULES_END));
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(vaddr >= ms->vmemmap_vaddr && vaddr <= ms->vmemmap_end)) ||
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(vaddr >= ms->modules_vaddr && vaddr <= ms->modules_end));
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}
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#endif /* ARM64 */
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31
defs.h
31
defs.h
@ -2647,9 +2647,9 @@ struct load_module {
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#define MACHINE_TYPE "ARM64"
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#define PTOV(X) \
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((unsigned long)(X)-(machdep->machspec->phys_offset)+(machdep->kvbase))
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((unsigned long)(X)-(machdep->machspec->phys_offset)+(machdep->machspec->page_offset))
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#define VTOP(X) \
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((unsigned long)(X)-(machdep->kvbase)+(machdep->machspec->phys_offset))
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((unsigned long)(X)-(machdep->machspec->page_offset)+(machdep->machspec->phys_offset))
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#define USERSPACE_TOP (machdep->machspec->userspace_top)
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#define PAGE_OFFSET (machdep->machspec->page_offset)
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@ -2759,16 +2759,25 @@ typedef signed int s32;
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/*
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* source: Documentation/arm64/memory.txt
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*/
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#define ARM64_USERSPACE_TOP (0x0000007fffffffffUL)
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#define ARM64_VMALLOC_START (0xffffff8000000000UL)
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#define ARM64_VMALLOC_END (0xffffffbbfffeffffUL)
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#define ARM64_VMEMMAP_VADDR (0xffffffbc00000000UL)
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#define ARM64_VMEMMAP_END (0xffffffbffbbfffffUL)
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#define ARM64_MODULES_VADDR (0xffffffbffc000000UL)
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#define ARM64_MODULES_END (0xffffffbfffffffffUL)
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#define ARM64_PAGE_OFFSET (0xffffffc000000000UL)
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#define ARM64_USERSPACE_TOP_4K (0x0000007fffffffffUL)
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#define ARM64_VMALLOC_START_4K (0xffffff8000000000UL)
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#define ARM64_VMALLOC_END_4K (0xffffffbbfffeffffUL)
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#define ARM64_VMEMMAP_VADDR_4K (0xffffffbc00000000UL)
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#define ARM64_VMEMMAP_END_4K (0xffffffbdffffffffUL)
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#define ARM64_MODULES_VADDR_4K (0xffffffbffc000000UL)
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#define ARM64_MODULES_END_4K (0xffffffbfffffffffUL)
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#define ARM64_PAGE_OFFSET_4K (0xffffffc000000000UL)
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#define ARM64_STACK_SIZE (8192)
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#define ARM64_USERSPACE_TOP_64K (0x000003ffffffffffUL)
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#define ARM64_VMALLOC_START_64K (0xfffffc0000000000UL)
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#define ARM64_VMALLOC_END_64K (0xfffffdfbfffeffffUL)
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#define ARM64_VMEMMAP_VADDR_64K (0xfffffdfc00000000UL)
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#define ARM64_VMEMMAP_END_64K (0xfffffdfdffffffffUL)
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#define ARM64_MODULES_VADDR_64K (0xfffffdfffc000000UL)
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#define ARM64_MODULES_END_64K (0xfffffdffffffffffUL)
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#define ARM64_PAGE_OFFSET_64K (0xfffffe0000000000UL)
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#define ARM64_STACK_SIZE (16384)
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#define _SECTION_SIZE_BITS 30
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#define _MAX_PHYSMEM_BITS 40
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