/* * include/asm-xtensa/ptrace.h * * 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 * for more details. * * Copyright (C) 2001 - 2005 Tensilica Inc. */ #ifndef _XTENSA_PTRACE_H #define _XTENSA_PTRACE_H #include <uapi/asm/ptrace.h> /* * Kernel stack * * +-----------------------+ -------- STACK_SIZE * | register file | | * +-----------------------+ | * | struct pt_regs | | * +-----------------------+ | ------ PT_REGS_OFFSET * double : 16 bytes spill area : | ^ * excetion :- - - - - - - - - - - -: | | * frame : struct pt_regs : | | * :- - - - - - - - - - - -: | | * | | | | * | memory stack | | | * | | | | * ~ ~ ~ ~ * ~ ~ ~ ~ * | | | | * | | | | * +-----------------------+ | | --- STACK_BIAS * | struct task_struct | | | ^ * current --> +-----------------------+ | | | * | struct thread_info | | | | * +-----------------------+ -------- */ #define KERNEL_STACK_SIZE (2 * PAGE_SIZE) /* Offsets for exception_handlers[] (3 x 64-entries x 4-byte tables). */ #define EXC_TABLE_KSTK 0x004 /* Kernel Stack */ #define EXC_TABLE_DOUBLE_SAVE 0x008 /* Double exception save area for a0 */ #define EXC_TABLE_FIXUP 0x00c /* Fixup handler */ #define EXC_TABLE_PARAM 0x010 /* For passing a parameter to fixup */ #define EXC_TABLE_SYSCALL_SAVE 0x014 /* For fast syscall handler */ #define EXC_TABLE_FAST_USER 0x100 /* Fast user exception handler */ #define EXC_TABLE_FAST_KERNEL 0x200 /* Fast kernel exception handler */ #define EXC_TABLE_DEFAULT 0x300 /* Default C-Handler */ #define EXC_TABLE_SIZE 0x400 #ifndef __ASSEMBLY__ #include <asm/coprocessor.h> /* * This struct defines the way the registers are stored on the * kernel stack during a system call or other kernel entry. */ struct pt_regs { unsigned long pc; /* 4 */ unsigned long ps; /* 8 */ unsigned long depc; /* 12 */ unsigned long exccause; /* 16 */ unsigned long excvaddr; /* 20 */ unsigned long debugcause; /* 24 */ unsigned long wmask; /* 28 */ unsigned long lbeg; /* 32 */ unsigned long lend; /* 36 */ unsigned long lcount; /* 40 */ unsigned long sar; /* 44 */ unsigned long windowbase; /* 48 */ unsigned long windowstart; /* 52 */ unsigned long syscall; /* 56 */ unsigned long icountlevel; /* 60 */ unsigned long scompare1; /* 64 */ unsigned long threadptr; /* 68 */ /* Additional configurable registers that are used by the compiler. */ xtregs_opt_t xtregs_opt; /* Make sure the areg field is 16 bytes aligned. */ int align[0] __attribute__ ((aligned(16))); /* current register frame. * Note: The ESF for kernel exceptions ends after 16 registers! */ unsigned long areg[16]; }; #include <variant/core.h> # define arch_has_single_step() (1) # define task_pt_regs(tsk) ((struct pt_regs*) \ (task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1) # define user_mode(regs) (((regs)->ps & 0x00000020)!=0) # define instruction_pointer(regs) ((regs)->pc) # define return_pointer(regs) (MAKE_PC_FROM_RA((regs)->areg[0], \ (regs)->areg[1])) # ifndef CONFIG_SMP # define profile_pc(regs) instruction_pointer(regs) # else # define profile_pc(regs) \ ({ \ in_lock_functions(instruction_pointer(regs)) ? \ return_pointer(regs) : instruction_pointer(regs); \ }) # endif #define user_stack_pointer(regs) ((regs)->areg[1]) #else /* __ASSEMBLY__ */ # include <asm/asm-offsets.h> #define PT_REGS_OFFSET (KERNEL_STACK_SIZE - PT_USER_SIZE) #endif /* !__ASSEMBLY__ */ #endif /* _XTENSA_PTRACE_H */
Name | Type | Size | Permission | Actions |
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Kbuild | File | 685 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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asm-uaccess.h | File | 4.11 KB | 0644 |
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asmmacro.h | File | 2.76 KB | 0644 |
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atomic.h | File | 7.38 KB | 0644 |
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barrier.h | File | 542 B | 0644 |
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bitops.h | File | 5.08 KB | 0644 |
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bootparam.h | File | 1.37 KB | 0644 |
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bugs.h | File | 451 B | 0644 |
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cache.h | File | 969 B | 0644 |
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cacheasm.h | File | 3.77 KB | 0644 |
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cacheflush.h | File | 5.76 KB | 0644 |
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checksum.h | File | 6 KB | 0644 |
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cmpxchg.h | File | 3.9 KB | 0644 |
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coprocessor.h | File | 5.05 KB | 0644 |
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current.h | File | 675 B | 0644 |
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delay.h | File | 1.63 KB | 0644 |
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dma-mapping.h | File | 855 B | 0644 |
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dma.h | File | 1.79 KB | 0644 |
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elf.h | File | 5.75 KB | 0644 |
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fixmap.h | File | 2.5 KB | 0644 |
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flat.h | File | 686 B | 0644 |
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ftrace.h | File | 979 B | 0644 |
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futex.h | File | 2.59 KB | 0644 |
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highmem.h | File | 2.33 KB | 0644 |
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hw_breakpoint.h | File | 1.45 KB | 0644 |
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hw_irq.h | File | 320 B | 0644 |
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initialize_mmu.h | File | 4.58 KB | 0644 |
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io.h | File | 2.09 KB | 0644 |
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irq.h | File | 1.46 KB | 0644 |
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irqflags.h | File | 1.99 KB | 0644 |
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kmem_layout.h | File | 2.07 KB | 0644 |
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mmu.h | File | 462 B | 0644 |
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mmu_context.h | File | 3.62 KB | 0644 |
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module.h | File | 525 B | 0644 |
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mxregs.h | File | 1.3 KB | 0644 |
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nommu_context.h | File | 602 B | 0644 |
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page.h | File | 5.69 KB | 0644 |
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pci-bridge.h | File | 2.16 KB | 0644 |
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pci.h | File | 1.37 KB | 0644 |
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perf_event.h | File | 108 B | 0644 |
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pgalloc.h | File | 1.84 KB | 0644 |
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pgtable.h | File | 14.89 KB | 0644 |
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platform.h | File | 1.75 KB | 0644 |
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processor.h | File | 7.44 KB | 0644 |
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ptrace.h | File | 3.74 KB | 0644 |
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regs.h | File | 3.87 KB | 0644 |
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segment.h | File | 376 B | 0644 |
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serial.h | File | 443 B | 0644 |
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shmparam.h | File | 561 B | 0644 |
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signal.h | File | 502 B | 0644 |
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smp.h | File | 967 B | 0644 |
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spinlock.h | File | 4.6 KB | 0644 |
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spinlock_types.h | File | 412 B | 0644 |
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stacktrace.h | File | 1.13 KB | 0644 |
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string.h | File | 2.65 KB | 0644 |
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switch_to.h | File | 601 B | 0644 |
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syscall.h | File | 982 B | 0644 |
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sysmem.h | File | 426 B | 0644 |
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thread_info.h | File | 3.62 KB | 0644 |
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timex.h | File | 1.79 KB | 0644 |
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tlb.h | File | 1.1 KB | 0644 |
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tlbflush.h | File | 5.53 KB | 0644 |
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traps.h | File | 1.87 KB | 0644 |
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types.h | File | 501 B | 0644 |
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uaccess.h | File | 8.67 KB | 0644 |
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ucontext.h | File | 540 B | 0644 |
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unaligned.h | File | 864 B | 0644 |
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unistd.h | File | 639 B | 0644 |
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user.h | File | 507 B | 0644 |
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vectors.h | File | 4.05 KB | 0644 |
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vga.h | File | 434 B | 0644 |
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