1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __UM_X86_PTRACE_H 3 #define __UM_X86_PTRACE_H 4 5 #include <linux/compiler.h> 6 #ifndef CONFIG_X86_32 7 #define __FRAME_OFFSETS /* Needed to get the R* macros */ 8 #endif 9 #include <asm/ptrace-generic.h> 10 11 #define user_mode(r) UPT_IS_USER(&(r)->regs) 12 13 #define PT_REGS_AX(r) UPT_AX(&(r)->regs) 14 #define PT_REGS_BX(r) UPT_BX(&(r)->regs) 15 #define PT_REGS_CX(r) UPT_CX(&(r)->regs) 16 #define PT_REGS_DX(r) UPT_DX(&(r)->regs) 17 18 #define PT_REGS_SI(r) UPT_SI(&(r)->regs) 19 #define PT_REGS_DI(r) UPT_DI(&(r)->regs) 20 #define PT_REGS_BP(r) UPT_BP(&(r)->regs) 21 #define PT_REGS_EFLAGS(r) UPT_EFLAGS(&(r)->regs) 22 23 #define PT_REGS_CS(r) UPT_CS(&(r)->regs) 24 #define PT_REGS_SS(r) UPT_SS(&(r)->regs) 25 #define PT_REGS_DS(r) UPT_DS(&(r)->regs) 26 #define PT_REGS_ES(r) UPT_ES(&(r)->regs) 27 28 #define PT_REGS_ORIG_SYSCALL(r) PT_REGS_AX(r) 29 #define PT_REGS_SYSCALL_RET(r) PT_REGS_AX(r) 30 31 #define PT_FIX_EXEC_STACK(sp) do ; while(0) 32 33 #define profile_pc(regs) PT_REGS_IP(regs) 34 35 #define UPT_RESTART_SYSCALL(r) (UPT_IP(r) -= 2) 36 #define PT_REGS_SET_SYSCALL_RETURN(r, res) (PT_REGS_AX(r) = (res)) 37 38 static inline long regs_return_value(struct pt_regs *regs) 39 { 40 return PT_REGS_AX(regs); 41 } 42 43 /* 44 * Forward declaration to avoid including sysdep/tls.h, which causes a 45 * circular include, and compilation failures. 46 */ 47 struct user_desc; 48 49 #ifdef CONFIG_X86_32 50 51 extern int ptrace_get_thread_area(struct task_struct *child, int idx, 52 struct user_desc __user *user_desc); 53 54 extern int ptrace_set_thread_area(struct task_struct *child, int idx, 55 struct user_desc __user *user_desc); 56 57 extern int arch_switch_tls(struct task_struct *to); 58 59 #else 60 61 #define PT_REGS_R8(r) UPT_R8(&(r)->regs) 62 #define PT_REGS_R9(r) UPT_R9(&(r)->regs) 63 #define PT_REGS_R10(r) UPT_R10(&(r)->regs) 64 #define PT_REGS_R11(r) UPT_R11(&(r)->regs) 65 #define PT_REGS_R12(r) UPT_R12(&(r)->regs) 66 #define PT_REGS_R13(r) UPT_R13(&(r)->regs) 67 #define PT_REGS_R14(r) UPT_R14(&(r)->regs) 68 #define PT_REGS_R15(r) UPT_R15(&(r)->regs) 69 70 #include <asm/errno.h> 71 72 static inline int ptrace_get_thread_area(struct task_struct *child, int idx, 73 struct user_desc __user *user_desc) 74 { 75 return -ENOSYS; 76 } 77 78 static inline int ptrace_set_thread_area(struct task_struct *child, int idx, 79 struct user_desc __user *user_desc) 80 { 81 return -ENOSYS; 82 } 83 84 extern long arch_prctl(struct task_struct *task, int option, 85 unsigned long __user *addr); 86 87 #endif 88 89 #define user_stack_pointer(regs) PT_REGS_SP(regs) 90 91 extern void arch_switch_to(struct task_struct *to); 92 93 #endif /* __UM_X86_PTRACE_H */ 94