1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __UM_X86_PTRACE_H 3 #define __UM_X86_PTRACE_H 4 5 /* This is here because signal.c needs the REGSET_FP_LEGACY definition */ 6 enum { 7 REGSET_GENERAL, 8 #ifdef CONFIG_X86_32 9 REGSET_FP_LEGACY, 10 #endif 11 REGSET_FP, 12 REGSET_XSTATE, 13 }; 14 15 #include <linux/compiler.h> 16 #ifndef CONFIG_X86_32 17 #define __FRAME_OFFSETS /* Needed to get the R* macros */ 18 #endif 19 #include <asm/ptrace-generic.h> 20 21 #define user_mode(r) UPT_IS_USER(&(r)->regs) 22 23 #define PT_REGS_AX(r) UPT_AX(&(r)->regs) 24 #define PT_REGS_BX(r) UPT_BX(&(r)->regs) 25 #define PT_REGS_CX(r) UPT_CX(&(r)->regs) 26 #define PT_REGS_DX(r) UPT_DX(&(r)->regs) 27 28 #define PT_REGS_SI(r) UPT_SI(&(r)->regs) 29 #define PT_REGS_DI(r) UPT_DI(&(r)->regs) 30 #define PT_REGS_BP(r) UPT_BP(&(r)->regs) 31 #define PT_REGS_EFLAGS(r) UPT_EFLAGS(&(r)->regs) 32 33 #define PT_REGS_CS(r) UPT_CS(&(r)->regs) 34 #define PT_REGS_SS(r) UPT_SS(&(r)->regs) 35 #define PT_REGS_DS(r) UPT_DS(&(r)->regs) 36 #define PT_REGS_ES(r) UPT_ES(&(r)->regs) 37 38 #define PT_REGS_ORIG_SYSCALL(r) PT_REGS_AX(r) 39 #define PT_REGS_SYSCALL_RET(r) PT_REGS_AX(r) 40 41 #define PT_FIX_EXEC_STACK(sp) do ; while(0) 42 43 #define profile_pc(regs) PT_REGS_IP(regs) 44 45 #define UPT_RESTART_SYSCALL(r) (UPT_IP(r) -= 2) 46 #define PT_REGS_SET_SYSCALL_RETURN(r, res) (PT_REGS_AX(r) = (res)) 47 48 static inline long regs_return_value(struct pt_regs *regs) 49 { 50 return PT_REGS_AX(regs); 51 } 52 53 /* 54 * Forward declaration to avoid including sysdep/tls.h, which causes a 55 * circular include, and compilation failures. 56 */ 57 struct user_desc; 58 59 #ifdef CONFIG_X86_32 60 61 extern int ptrace_get_thread_area(struct task_struct *child, int idx, 62 struct user_desc __user *user_desc); 63 64 extern int ptrace_set_thread_area(struct task_struct *child, int idx, 65 struct user_desc __user *user_desc); 66 67 extern int arch_switch_tls(struct task_struct *to); 68 69 #else 70 71 #define PT_REGS_R8(r) UPT_R8(&(r)->regs) 72 #define PT_REGS_R9(r) UPT_R9(&(r)->regs) 73 #define PT_REGS_R10(r) UPT_R10(&(r)->regs) 74 #define PT_REGS_R11(r) UPT_R11(&(r)->regs) 75 #define PT_REGS_R12(r) UPT_R12(&(r)->regs) 76 #define PT_REGS_R13(r) UPT_R13(&(r)->regs) 77 #define PT_REGS_R14(r) UPT_R14(&(r)->regs) 78 #define PT_REGS_R15(r) UPT_R15(&(r)->regs) 79 80 #include <asm/errno.h> 81 82 static inline int ptrace_get_thread_area(struct task_struct *child, int idx, 83 struct user_desc __user *user_desc) 84 { 85 return -ENOSYS; 86 } 87 88 static inline int ptrace_set_thread_area(struct task_struct *child, int idx, 89 struct user_desc __user *user_desc) 90 { 91 return -ENOSYS; 92 } 93 94 extern long arch_prctl(struct task_struct *task, int option, 95 unsigned long __user *addr); 96 97 #endif 98 99 #define user_stack_pointer(regs) PT_REGS_SP(regs) 100 101 extern void arch_switch_to(struct task_struct *to); 102 103 #endif /* __UM_X86_PTRACE_H */ 104