1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __SYSDEP_X86_PTRACE_H 3 #define __SYSDEP_X86_PTRACE_H 4 5 #include <generated/user_constants.h> 6 #include <sysdep/faultinfo.h> 7 8 #define MAX_REG_OFFSET (UM_FRAME_SIZE) 9 #define MAX_REG_NR ((MAX_REG_OFFSET) / sizeof(unsigned long)) 10 11 #define REGS_IP(r) ((r)[HOST_IP]) 12 #define REGS_SP(r) ((r)[HOST_SP]) 13 #define REGS_EFLAGS(r) ((r)[HOST_EFLAGS]) 14 #define REGS_AX(r) ((r)[HOST_AX]) 15 #define REGS_BX(r) ((r)[HOST_BX]) 16 #define REGS_CX(r) ((r)[HOST_CX]) 17 #define REGS_DX(r) ((r)[HOST_DX]) 18 #define REGS_SI(r) ((r)[HOST_SI]) 19 #define REGS_DI(r) ((r)[HOST_DI]) 20 #define REGS_BP(r) ((r)[HOST_BP]) 21 #define REGS_CS(r) ((r)[HOST_CS]) 22 #define REGS_SS(r) ((r)[HOST_SS]) 23 #define REGS_DS(r) ((r)[HOST_DS]) 24 #define REGS_ES(r) ((r)[HOST_ES]) 25 26 #define UPT_IP(r) REGS_IP((r)->gp) 27 #define UPT_SP(r) REGS_SP((r)->gp) 28 #define UPT_EFLAGS(r) REGS_EFLAGS((r)->gp) 29 #define UPT_AX(r) REGS_AX((r)->gp) 30 #define UPT_BX(r) REGS_BX((r)->gp) 31 #define UPT_CX(r) REGS_CX((r)->gp) 32 #define UPT_DX(r) REGS_DX((r)->gp) 33 #define UPT_SI(r) REGS_SI((r)->gp) 34 #define UPT_DI(r) REGS_DI((r)->gp) 35 #define UPT_BP(r) REGS_BP((r)->gp) 36 #define UPT_CS(r) REGS_CS((r)->gp) 37 #define UPT_SS(r) REGS_SS((r)->gp) 38 #define UPT_DS(r) REGS_DS((r)->gp) 39 #define UPT_ES(r) REGS_ES((r)->gp) 40 41 #ifdef __i386__ 42 #include "ptrace_32.h" 43 #else 44 #include "ptrace_64.h" 45 #endif 46 47 struct syscall_args { 48 unsigned long args[6]; 49 }; 50 51 #define SYSCALL_ARGS(r) ((struct syscall_args) \ 52 { .args = { UPT_SYSCALL_ARG1(r), \ 53 UPT_SYSCALL_ARG2(r), \ 54 UPT_SYSCALL_ARG3(r), \ 55 UPT_SYSCALL_ARG4(r), \ 56 UPT_SYSCALL_ARG5(r), \ 57 UPT_SYSCALL_ARG6(r) } } ) 58 59 extern unsigned long host_fp_size; 60 61 struct uml_pt_regs { 62 unsigned long gp[MAX_REG_NR]; 63 struct faultinfo faultinfo; 64 long syscall; 65 int is_user; 66 67 /* Dynamically sized FP registers (holds an XSTATE) */ 68 unsigned long fp[]; 69 }; 70 71 #define EMPTY_UML_PT_REGS { } 72 73 #define UPT_SYSCALL_NR(r) ((r)->syscall) 74 #define UPT_FAULTINFO(r) (&(r)->faultinfo) 75 #define UPT_IS_USER(r) ((r)->is_user) 76 77 extern int user_context(unsigned long sp); 78 79 extern int arch_init_registers(int pid); 80 81 #endif /* __SYSDEP_X86_PTRACE_H */ 82