/* * 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 */Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Chris Zankel | 175 | 65.79% | 8 | 47.06% |
| Max Filippov | 70 | 26.32% | 3 | 17.65% |
| Al Viro | 8 | 3.01% | 2 | 11.76% |
| Christoph Hellwig | 5 | 1.88% | 1 | 5.88% |
| Adrian Bunk | 4 | 1.50% | 1 | 5.88% |
| David Howells | 3 | 1.13% | 1 | 5.88% |
| Sam Ravnborg | 1 | 0.38% | 1 | 5.88% |
| Total | 266 | 100.00% | 17 | 100.00% |