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>
27 lines
994 B
C
27 lines
994 B
C
/*
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* Copyright (C) 2004 PathScale, Inc
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* Licensed under the GPL
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*/
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#ifndef __REGISTERS_H
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#define __REGISTERS_H
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#include <sysdep/ptrace.h>
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#include <sysdep/archsetjmp.h>
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extern int save_i387_registers(int pid, unsigned long *fp_regs);
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extern int restore_i387_registers(int pid, unsigned long *fp_regs);
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extern int save_fp_registers(int pid, unsigned long *fp_regs);
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extern int restore_fp_registers(int pid, unsigned long *fp_regs);
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extern int save_fpx_registers(int pid, unsigned long *fp_regs);
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extern int restore_fpx_registers(int pid, unsigned long *fp_regs);
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extern int save_registers(int pid, struct uml_pt_regs *regs);
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extern int restore_registers(int pid, struct uml_pt_regs *regs);
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extern int init_registers(int pid);
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extern void get_safe_registers(unsigned long *regs, unsigned long *fp_regs);
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extern unsigned long get_thread_reg(int reg, jmp_buf *buf);
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extern int get_fp_registers(int pid, unsigned long *regs);
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extern int put_fp_registers(int pid, unsigned long *regs);
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#endif
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