mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
03bc996af0
Coprocessor context offsets are used by the assembly code that moves coprocessor context between the individual fields of the thread_info::xtregs_cp structure and coprocessor registers. This fixes coprocessor context clobbering on flushing and reloading during normal user code execution and user process debugging in the presence of more than one coprocessor in the core configuration. Cc: stable@vger.kernel.org Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
150 lines
6.1 KiB
C
150 lines
6.1 KiB
C
/*
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* arch/xtensa/kernel/asm-offsets.c
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*
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* Generates definitions from c-type structures used by assembly sources.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2005 Tensilica Inc.
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*
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* Chris Zankel <chris@zankel.net>
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*/
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#include <asm/processor.h>
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#include <asm/coprocessor.h>
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#include <linux/types.h>
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#include <linux/stddef.h>
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#include <linux/thread_info.h>
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#include <linux/ptrace.h>
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#include <linux/mm.h>
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#include <linux/kbuild.h>
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#include <asm/ptrace.h>
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#include <asm/traps.h>
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#include <linux/uaccess.h>
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int main(void)
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{
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/* struct pt_regs */
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DEFINE(PT_PC, offsetof (struct pt_regs, pc));
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DEFINE(PT_PS, offsetof (struct pt_regs, ps));
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DEFINE(PT_DEPC, offsetof (struct pt_regs, depc));
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DEFINE(PT_EXCCAUSE, offsetof (struct pt_regs, exccause));
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DEFINE(PT_EXCVADDR, offsetof (struct pt_regs, excvaddr));
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DEFINE(PT_DEBUGCAUSE, offsetof (struct pt_regs, debugcause));
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DEFINE(PT_WMASK, offsetof (struct pt_regs, wmask));
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DEFINE(PT_LBEG, offsetof (struct pt_regs, lbeg));
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DEFINE(PT_LEND, offsetof (struct pt_regs, lend));
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DEFINE(PT_LCOUNT, offsetof (struct pt_regs, lcount));
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DEFINE(PT_SAR, offsetof (struct pt_regs, sar));
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DEFINE(PT_ICOUNTLEVEL, offsetof (struct pt_regs, icountlevel));
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DEFINE(PT_SYSCALL, offsetof (struct pt_regs, syscall));
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DEFINE(PT_SCOMPARE1, offsetof(struct pt_regs, scompare1));
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DEFINE(PT_THREADPTR, offsetof(struct pt_regs, threadptr));
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DEFINE(PT_AREG, offsetof (struct pt_regs, areg[0]));
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DEFINE(PT_AREG0, offsetof (struct pt_regs, areg[0]));
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DEFINE(PT_AREG1, offsetof (struct pt_regs, areg[1]));
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DEFINE(PT_AREG2, offsetof (struct pt_regs, areg[2]));
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DEFINE(PT_AREG3, offsetof (struct pt_regs, areg[3]));
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DEFINE(PT_AREG4, offsetof (struct pt_regs, areg[4]));
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DEFINE(PT_AREG5, offsetof (struct pt_regs, areg[5]));
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DEFINE(PT_AREG6, offsetof (struct pt_regs, areg[6]));
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DEFINE(PT_AREG7, offsetof (struct pt_regs, areg[7]));
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DEFINE(PT_AREG8, offsetof (struct pt_regs, areg[8]));
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DEFINE(PT_AREG9, offsetof (struct pt_regs, areg[9]));
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DEFINE(PT_AREG10, offsetof (struct pt_regs, areg[10]));
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DEFINE(PT_AREG11, offsetof (struct pt_regs, areg[11]));
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DEFINE(PT_AREG12, offsetof (struct pt_regs, areg[12]));
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DEFINE(PT_AREG13, offsetof (struct pt_regs, areg[13]));
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DEFINE(PT_AREG14, offsetof (struct pt_regs, areg[14]));
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DEFINE(PT_AREG15, offsetof (struct pt_regs, areg[15]));
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DEFINE(PT_WINDOWBASE, offsetof (struct pt_regs, windowbase));
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DEFINE(PT_WINDOWSTART, offsetof(struct pt_regs, windowstart));
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DEFINE(PT_SIZE, sizeof(struct pt_regs));
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DEFINE(PT_AREG_END, offsetof (struct pt_regs, areg[XCHAL_NUM_AREGS]));
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DEFINE(PT_USER_SIZE, offsetof(struct pt_regs, areg[XCHAL_NUM_AREGS]));
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DEFINE(PT_XTREGS_OPT, offsetof(struct pt_regs, xtregs_opt));
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DEFINE(XTREGS_OPT_SIZE, sizeof(xtregs_opt_t));
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/* struct task_struct */
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DEFINE(TASK_PTRACE, offsetof (struct task_struct, ptrace));
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DEFINE(TASK_MM, offsetof (struct task_struct, mm));
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DEFINE(TASK_ACTIVE_MM, offsetof (struct task_struct, active_mm));
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DEFINE(TASK_PID, offsetof (struct task_struct, pid));
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DEFINE(TASK_THREAD, offsetof (struct task_struct, thread));
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DEFINE(TASK_THREAD_INFO, offsetof (struct task_struct, stack));
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#ifdef CONFIG_STACKPROTECTOR
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DEFINE(TASK_STACK_CANARY, offsetof(struct task_struct, stack_canary));
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#endif
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DEFINE(TASK_STRUCT_SIZE, sizeof (struct task_struct));
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/* offsets in thread_info struct */
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OFFSET(TI_TASK, thread_info, task);
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OFFSET(TI_FLAGS, thread_info, flags);
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OFFSET(TI_STSTUS, thread_info, status);
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OFFSET(TI_CPU, thread_info, cpu);
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OFFSET(TI_PRE_COUNT, thread_info, preempt_count);
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OFFSET(TI_ADDR_LIMIT, thread_info, addr_limit);
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/* struct thread_info (offset from start_struct) */
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DEFINE(THREAD_RA, offsetof (struct task_struct, thread.ra));
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DEFINE(THREAD_SP, offsetof (struct task_struct, thread.sp));
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DEFINE(THREAD_CPENABLE, offsetof (struct thread_info, cpenable));
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#if XTENSA_HAVE_COPROCESSORS
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DEFINE(THREAD_XTREGS_CP0, offsetof(struct thread_info, xtregs_cp.cp0));
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DEFINE(THREAD_XTREGS_CP1, offsetof(struct thread_info, xtregs_cp.cp1));
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DEFINE(THREAD_XTREGS_CP2, offsetof(struct thread_info, xtregs_cp.cp2));
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DEFINE(THREAD_XTREGS_CP3, offsetof(struct thread_info, xtregs_cp.cp3));
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DEFINE(THREAD_XTREGS_CP4, offsetof(struct thread_info, xtregs_cp.cp4));
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DEFINE(THREAD_XTREGS_CP5, offsetof(struct thread_info, xtregs_cp.cp5));
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DEFINE(THREAD_XTREGS_CP6, offsetof(struct thread_info, xtregs_cp.cp6));
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DEFINE(THREAD_XTREGS_CP7, offsetof(struct thread_info, xtregs_cp.cp7));
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#endif
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DEFINE(THREAD_XTREGS_USER, offsetof (struct thread_info, xtregs_user));
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DEFINE(XTREGS_USER_SIZE, sizeof(xtregs_user_t));
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DEFINE(THREAD_CURRENT_DS, offsetof (struct task_struct, \
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thread.current_ds));
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/* struct mm_struct */
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DEFINE(MM_USERS, offsetof(struct mm_struct, mm_users));
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DEFINE(MM_PGD, offsetof (struct mm_struct, pgd));
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DEFINE(MM_CONTEXT, offsetof (struct mm_struct, context));
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/* struct page */
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DEFINE(PAGE_FLAGS, offsetof(struct page, flags));
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/* constants */
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DEFINE(_CLONE_VM, CLONE_VM);
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DEFINE(_CLONE_UNTRACED, CLONE_UNTRACED);
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DEFINE(PG_ARCH_1, PG_arch_1);
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/* struct debug_table */
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DEFINE(DT_DEBUG_EXCEPTION,
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offsetof(struct debug_table, debug_exception));
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DEFINE(DT_DEBUG_SAVE, offsetof(struct debug_table, debug_save));
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#ifdef CONFIG_HAVE_HW_BREAKPOINT
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DEFINE(DT_DBREAKC_SAVE, offsetof(struct debug_table, dbreakc_save));
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DEFINE(DT_ICOUNT_SAVE, offsetof(struct debug_table, icount_save));
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DEFINE(DT_ICOUNT_LEVEL_SAVE,
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offsetof(struct debug_table, icount_level_save));
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#endif
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/* struct exc_table */
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DEFINE(EXC_TABLE_KSTK, offsetof(struct exc_table, kstk));
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DEFINE(EXC_TABLE_DOUBLE_SAVE, offsetof(struct exc_table, double_save));
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DEFINE(EXC_TABLE_FIXUP, offsetof(struct exc_table, fixup));
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DEFINE(EXC_TABLE_PARAM, offsetof(struct exc_table, fixup_param));
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DEFINE(EXC_TABLE_SYSCALL_SAVE,
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offsetof(struct exc_table, syscall_save));
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DEFINE(EXC_TABLE_FAST_USER,
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offsetof(struct exc_table, fast_user_handler));
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DEFINE(EXC_TABLE_FAST_KERNEL,
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offsetof(struct exc_table, fast_kernel_handler));
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DEFINE(EXC_TABLE_DEFAULT, offsetof(struct exc_table, default_handler));
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return 0;
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}
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