diff options
| author | Max Filippov <jcmvbkbc@gmail.com> | 2015-01-27 00:43:14 +0300 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2017-05-01 17:00:10 +0300 |
| commit | 0700ed072feffd65212e6a03840d19c4988d6820 (patch) | |
| tree | 4657a7f55cc926b3cc08806dcff6fa2613d5438f /arch/xtensa | |
| parent | 1b47a683a04a93ad32786a23b7f88990b980346a (diff) | |
| download | linux-0700ed072feffd65212e6a03840d19c4988d6820.tar.xz | |
xtensa: move internal ptrace definitions from uapi/asm to asm
Stack frame layout diagram, kernel stack size and exception_handlers
offsets are used by the kernel and are not supposed to be accessible to
userspace. Move these definitions from uapi/asm/ptrace.h to asm/ptrace.h
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa')
| -rw-r--r-- | arch/xtensa/include/asm/ptrace.h | 39 | ||||
| -rw-r--r-- | arch/xtensa/include/uapi/asm/ptrace.h | 40 |
2 files changed, 39 insertions, 40 deletions
diff --git a/arch/xtensa/include/asm/ptrace.h b/arch/xtensa/include/asm/ptrace.h index 598e752dcbcd..e2d9c5eb10bd 100644 --- a/arch/xtensa/include/asm/ptrace.h +++ b/arch/xtensa/include/asm/ptrace.h @@ -12,6 +12,45 @@ #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__ diff --git a/arch/xtensa/include/uapi/asm/ptrace.h b/arch/xtensa/include/uapi/asm/ptrace.h index 6ccbd9e38e35..8853a0d544c8 100644 --- a/arch/xtensa/include/uapi/asm/ptrace.h +++ b/arch/xtensa/include/uapi/asm/ptrace.h @@ -11,46 +11,6 @@ #ifndef _UAPI_XTENSA_PTRACE_H #define _UAPI_XTENSA_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 - /* Registers used by strace */ #define REG_A_BASE 0x0000 |