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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/x86/um/asm/ptrace.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#ifndef __UM_X86_PTRACE_H

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#define __UM_X86_PTRACE_H

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/* This is here because signal.c needs the REGSET_FP_LEGACY definition */

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enum {

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	REGSET_GENERAL,

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#ifdef CONFIG_X86_32

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	REGSET_FP_LEGACY,

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#endif

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	REGSET_FP,

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	REGSET_XSTATE,

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};

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#include <linux/compiler.h>

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#ifndef CONFIG_X86_32

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#define __FRAME_OFFSETS /* Needed to get the R* macros */

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#endif

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#include <asm/ptrace-generic.h>

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#define user_mode(r) UPT_IS_USER(&(r)->regs)

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#define PT_REGS_AX(r) UPT_AX(&(r)->regs)

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#define PT_REGS_BX(r) UPT_BX(&(r)->regs)

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#define PT_REGS_CX(r) UPT_CX(&(r)->regs)

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#define PT_REGS_DX(r) UPT_DX(&(r)->regs)

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#define PT_REGS_SI(r) UPT_SI(&(r)->regs)

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#define PT_REGS_DI(r) UPT_DI(&(r)->regs)

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#define PT_REGS_BP(r) UPT_BP(&(r)->regs)

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#define PT_REGS_EFLAGS(r) UPT_EFLAGS(&(r)->regs)

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#define PT_REGS_CS(r) UPT_CS(&(r)->regs)

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#define PT_REGS_SS(r) UPT_SS(&(r)->regs)

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#define PT_REGS_DS(r) UPT_DS(&(r)->regs)

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#define PT_REGS_ES(r) UPT_ES(&(r)->regs)

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#define PT_REGS_ORIG_SYSCALL(r) PT_REGS_AX(r)

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#define PT_REGS_SYSCALL_RET(r) PT_REGS_AX(r)

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#define PT_FIX_EXEC_STACK(sp) do ; while(0)

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#define profile_pc(regs) PT_REGS_IP(regs)

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#define UPT_RESTART_SYSCALL(r) (UPT_IP(r) -= 2)

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#define PT_REGS_SET_SYSCALL_RETURN(r, res) (PT_REGS_AX(r) = (res))

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static inline long regs_return_value(struct pt_regs *regs)

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{

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	return PT_REGS_AX(regs);

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}

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/*

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 * Forward declaration to avoid including sysdep/tls.h, which causes a

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 * circular include, and compilation failures.

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 */

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struct user_desc;

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#ifdef CONFIG_X86_32

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extern int ptrace_get_thread_area(struct task_struct *child, int idx,

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                                  struct user_desc __user *user_desc);

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extern int ptrace_set_thread_area(struct task_struct *child, int idx,

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                                  struct user_desc __user *user_desc);

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extern int arch_switch_tls(struct task_struct *to);

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#else

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#define PT_REGS_R8(r) UPT_R8(&(r)->regs)

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#define PT_REGS_R9(r) UPT_R9(&(r)->regs)

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#define PT_REGS_R10(r) UPT_R10(&(r)->regs)

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#define PT_REGS_R11(r) UPT_R11(&(r)->regs)

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#define PT_REGS_R12(r) UPT_R12(&(r)->regs)

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#define PT_REGS_R13(r) UPT_R13(&(r)->regs)

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#define PT_REGS_R14(r) UPT_R14(&(r)->regs)

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#define PT_REGS_R15(r) UPT_R15(&(r)->regs)

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#include <asm/errno.h>

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static inline int ptrace_get_thread_area(struct task_struct *child, int idx,

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                                         struct user_desc __user *user_desc)

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{

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        return -ENOSYS;

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}

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static inline int ptrace_set_thread_area(struct task_struct *child, int idx,

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                                         struct user_desc __user *user_desc)

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{

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        return -ENOSYS;

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}

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extern long arch_prctl(struct task_struct *task, int option,

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		       unsigned long __user *addr);

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#endif

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#define user_stack_pointer(regs) PT_REGS_SP(regs)

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extern void arch_switch_to(struct task_struct *to);

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#endif /* __UM_X86_PTRACE_H */

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