mirror of
https://github.com/torvalds/linux.git
synced 2024-09-21 07:23:06 +00:00
a78ff11122
This patch extends save_fp_registers() and restore_fp_registers() to use PTRACE_GETREGSET and PTRACE_SETREGSET with the XSTATE note type, adding support for new processor state extensions between context switches. When the new ptrace requests are unavailable, it falls back to the old PTRACE_GETFPREGS and PTRACE_SETFPREGS methods, which have been renamed to save_i387_registers() and restore_i387_registers(). Now these functions expect *fp_regs to have the space of an _xstate struct. Thus, this also makes ptrace in UML responde to PTRACE_GETFPREGS/_SETFPREG requests with a user_i387_struct (thus independent from HOST_FP_SIZE), and by calling save_i387_registers() and restore_i387_registers() instead of the extended save_fp_registers() and restore_fp_registers() functions. Signed-off-by: Eli Cooper <elicooper@gmx.com>
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/*
|
|
* Copyright 2003 PathScale, Inc.
|
|
* Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
|
|
*
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#ifndef __SYSDEP_X86_64_PTRACE_H
|
|
#define __SYSDEP_X86_64_PTRACE_H
|
|
|
|
#define MAX_FP_NR HOST_FP_SIZE
|
|
|
|
#define REGS_R8(r) ((r)[HOST_R8])
|
|
#define REGS_R9(r) ((r)[HOST_R9])
|
|
#define REGS_R10(r) ((r)[HOST_R10])
|
|
#define REGS_R11(r) ((r)[HOST_R11])
|
|
#define REGS_R12(r) ((r)[HOST_R12])
|
|
#define REGS_R13(r) ((r)[HOST_R13])
|
|
#define REGS_R14(r) ((r)[HOST_R14])
|
|
#define REGS_R15(r) ((r)[HOST_R15])
|
|
|
|
#define HOST_FS_BASE 21
|
|
#define HOST_GS_BASE 22
|
|
#define HOST_DS 23
|
|
#define HOST_ES 24
|
|
#define HOST_FS 25
|
|
#define HOST_GS 26
|
|
|
|
/* Also defined in asm/ptrace-x86_64.h, but not in libc headers. So, these
|
|
* are already defined for kernel code, but not for userspace code.
|
|
*/
|
|
#ifndef FS_BASE
|
|
/* These aren't defined in ptrace.h, but exist in struct user_regs_struct,
|
|
* which is what x86_64 ptrace actually uses.
|
|
*/
|
|
#define FS_BASE (HOST_FS_BASE * sizeof(long))
|
|
#define GS_BASE (HOST_GS_BASE * sizeof(long))
|
|
#define DS (HOST_DS * sizeof(long))
|
|
#define ES (HOST_ES * sizeof(long))
|
|
#define FS (HOST_FS * sizeof(long))
|
|
#define GS (HOST_GS * sizeof(long))
|
|
#endif
|
|
|
|
#define UPT_R8(r) REGS_R8((r)->gp)
|
|
#define UPT_R9(r) REGS_R9((r)->gp)
|
|
#define UPT_R10(r) REGS_R10((r)->gp)
|
|
#define UPT_R11(r) REGS_R11((r)->gp)
|
|
#define UPT_R12(r) REGS_R12((r)->gp)
|
|
#define UPT_R13(r) REGS_R13((r)->gp)
|
|
#define UPT_R14(r) REGS_R14((r)->gp)
|
|
#define UPT_R15(r) REGS_R15((r)->gp)
|
|
|
|
#define UPT_SYSCALL_ARG1(r) UPT_DI(r)
|
|
#define UPT_SYSCALL_ARG2(r) UPT_SI(r)
|
|
#define UPT_SYSCALL_ARG3(r) UPT_DX(r)
|
|
#define UPT_SYSCALL_ARG4(r) UPT_R10(r)
|
|
#define UPT_SYSCALL_ARG5(r) UPT_R8(r)
|
|
#define UPT_SYSCALL_ARG6(r) UPT_R9(r)
|
|
|
|
extern void arch_init_registers(int pid);
|
|
|
|
#endif
|