arch/um/sys-x86_64/shared/sysdep/ptrace.h - kernel/prism - Git at Google

 /*
  * Copyright 2003 PathScale, Inc.
  * Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  *
  * Licensed under the GPL
  */

 #ifndef __SYSDEP_X86_64_PTRACE_H
 #define __SYSDEP_X86_64_PTRACE_H

 #include "user_constants.h"
 #include "sysdep/faultinfo.h"

 #define MAX_REG_OFFSET (UM_FRAME_SIZE)
 #define MAX_REG_NR ((MAX_REG_OFFSET) / sizeof(unsigned long))

 #include "skas_ptregs.h"

 #define REGS_IP(r) ((r)[HOST_IP])
 #define REGS_SP(r) ((r)[HOST_SP])

 #define REGS_RBX(r) ((r)[HOST_RBX])
 #define REGS_RCX(r) ((r)[HOST_RCX])
 #define REGS_RDX(r) ((r)[HOST_RDX])
 #define REGS_RSI(r) ((r)[HOST_RSI])
 #define REGS_RDI(r) ((r)[HOST_RDI])
 #define REGS_RBP(r) ((r)[HOST_RBP])
 #define REGS_RAX(r) ((r)[HOST_RAX])
 #define REGS_R8(r) ((r)[HOST_R8])
 #define REGS_R9(r) ((r)[HOST_R9])
 #define REGS_R10(r) ((r)[HOST_R10])
 #define REGS_R11(r) ((r)[HOST_R11])
 #define REGS_R12(r) ((r)[HOST_R12])
 #define REGS_R13(r) ((r)[HOST_R13])
 #define REGS_R14(r) ((r)[HOST_R14])
 #define REGS_R15(r) ((r)[HOST_R15])
 #define REGS_CS(r) ((r)[HOST_CS])
 #define REGS_EFLAGS(r) ((r)[HOST_EFLAGS])
 #define REGS_SS(r) ((r)[HOST_SS])

 #define HOST_FS_BASE 21
 #define HOST_GS_BASE 22
 #define HOST_DS 23
 #define HOST_ES 24
 #define HOST_FS 25
 #define HOST_GS 26

 /* Also defined in asm/ptrace-x86_64.h, but not in libc headers.  So, these
  * are already defined for kernel code, but not for userspace code.
  */
 #ifndef FS_BASE
 /* These aren't defined in ptrace.h, but exist in struct user_regs_struct,
  * which is what x86_64 ptrace actually uses.
  */
 #define FS_BASE (HOST_FS_BASE * sizeof(long))
 #define GS_BASE (HOST_GS_BASE * sizeof(long))
 #define DS (HOST_DS * sizeof(long))
 #define ES (HOST_ES * sizeof(long))
 #define FS (HOST_FS * sizeof(long))
 #define GS (HOST_GS * sizeof(long))
 #endif

 #define REGS_FS_BASE(r) ((r)[HOST_FS_BASE])
 #define REGS_GS_BASE(r) ((r)[HOST_GS_BASE])
 #define REGS_DS(r) ((r)[HOST_DS])
 #define REGS_ES(r) ((r)[HOST_ES])
 #define REGS_FS(r) ((r)[HOST_FS])
 #define REGS_GS(r) ((r)[HOST_GS])

 #define REGS_ORIG_RAX(r) ((r)[HOST_ORIG_RAX])

 #define REGS_SET_SYSCALL_RETURN(r, res) REGS_RAX(r) = (res)

 #define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r))

 #define REGS_SEGV_IS_FIXABLE(r) SEGV_IS_FIXABLE((r)->trap_type)

 #define REGS_FAULT_ADDR(r) ((r)->fault_addr)

 #define REGS_FAULT_WRITE(r) FAULT_WRITE((r)->fault_type)

 #define REGS_TRAP(r) ((r)->trap_type)

 #define REGS_ERR(r) ((r)->fault_type)

 struct uml_pt_regs {
 	unsigned long gp[MAX_REG_NR];
 	struct faultinfo faultinfo;
 	long syscall;
 	int is_user;
 };

 #define EMPTY_UML_PT_REGS { }

 #define UPT_RBX(r) REGS_RBX((r)->gp)
 #define UPT_RCX(r) REGS_RCX((r)->gp)
 #define UPT_RDX(r) REGS_RDX((r)->gp)
 #define UPT_RSI(r) REGS_RSI((r)->gp)
 #define UPT_RDI(r) REGS_RDI((r)->gp)
 #define UPT_RBP(r) REGS_RBP((r)->gp)
 #define UPT_RAX(r) REGS_RAX((r)->gp)
 #define UPT_R8(r) REGS_R8((r)->gp)
 #define UPT_R9(r) REGS_R9((r)->gp)
 #define UPT_R10(r) REGS_R10((r)->gp)
 #define UPT_R11(r) REGS_R11((r)->gp)
 #define UPT_R12(r) REGS_R12((r)->gp)
 #define UPT_R13(r) REGS_R13((r)->gp)
 #define UPT_R14(r) REGS_R14((r)->gp)
 #define UPT_R15(r) REGS_R15((r)->gp)
 #define UPT_CS(r) REGS_CS((r)->gp)
 #define UPT_FS_BASE(r) REGS_FS_BASE((r)->gp)
 #define UPT_FS(r) REGS_FS((r)->gp)
 #define UPT_GS_BASE(r) REGS_GS_BASE((r)->gp)
 #define UPT_GS(r) REGS_GS((r)->gp)
 #define UPT_DS(r) REGS_DS((r)->gp)
 #define UPT_ES(r) REGS_ES((r)->gp)
 #define UPT_CS(r) REGS_CS((r)->gp)
 #define UPT_SS(r) REGS_SS((r)->gp)
 #define UPT_ORIG_RAX(r) REGS_ORIG_RAX((r)->gp)

 #define UPT_IP(r) REGS_IP((r)->gp)
 #define UPT_SP(r) REGS_SP((r)->gp)

 #define UPT_EFLAGS(r) REGS_EFLAGS((r)->gp)
 #define UPT_SYSCALL_NR(r) ((r)->syscall)
 #define UPT_SYSCALL_RET(r) UPT_RAX(r)

 extern int user_context(unsigned long sp);

 #define UPT_IS_USER(r) ((r)->is_user)

 #define UPT_SYSCALL_ARG1(r) UPT_RDI(r)
 #define UPT_SYSCALL_ARG2(r) UPT_RSI(r)
 #define UPT_SYSCALL_ARG3(r) UPT_RDX(r)
 #define UPT_SYSCALL_ARG4(r) UPT_R10(r)
 #define UPT_SYSCALL_ARG5(r) UPT_R8(r)
 #define UPT_SYSCALL_ARG6(r) UPT_R9(r)

 struct syscall_args {
 	unsigned long args[6];
 };

 #define SYSCALL_ARGS(r) ((struct syscall_args) \
 			 { .args = { UPT_SYSCALL_ARG1(r),	 \
 				     UPT_SYSCALL_ARG2(r),	 \
 				     UPT_SYSCALL_ARG3(r),	 \
 				     UPT_SYSCALL_ARG4(r),	 \
 				     UPT_SYSCALL_ARG5(r),	 \
 				     UPT_SYSCALL_ARG6(r) } } )

 #define UPT_REG(regs, reg) \
 	({      unsigned long val;		\
 		switch(reg){						\
 		case R8: val = UPT_R8(regs); break;			\
 		case R9: val = UPT_R9(regs); break;			\
 		case R10: val = UPT_R10(regs); break;			\
 		case R11: val = UPT_R11(regs); break;			\
 		case R12: val = UPT_R12(regs); break;			\
 		case R13: val = UPT_R13(regs); break;			\
 		case R14: val = UPT_R14(regs); break;			\
 		case R15: val = UPT_R15(regs); break;			\
 		case RIP: val = UPT_IP(regs); break;			\
 		case RSP: val = UPT_SP(regs); break;			\
 		case RAX: val = UPT_RAX(regs); break;			\
 		case RBX: val = UPT_RBX(regs); break;			\
 		case RCX: val = UPT_RCX(regs); break;			\
 		case RDX: val = UPT_RDX(regs); break;			\
 		case RSI: val = UPT_RSI(regs); break;			\
 		case RDI: val = UPT_RDI(regs); break;			\
 		case RBP: val = UPT_RBP(regs); break;			\
 		case ORIG_RAX: val = UPT_ORIG_RAX(regs); break;		\
 		case CS: val = UPT_CS(regs); break;			\
 		case SS: val = UPT_SS(regs); break;			\
 		case FS_BASE: val = UPT_FS_BASE(regs); break;		\
 		case GS_BASE: val = UPT_GS_BASE(regs); break;		\
 		case DS: val = UPT_DS(regs); break;			\
 		case ES: val = UPT_ES(regs); break;			\
 		case FS : val = UPT_FS (regs); break;			\
 		case GS: val = UPT_GS(regs); break;			\
 		case EFLAGS: val = UPT_EFLAGS(regs); break;		\
 		default :						\
 			panic("Bad register in UPT_REG : %d\n", reg);	\
 			val = -1;					\
 		}							\
 		val;							\
 	})


 #define UPT_SET(regs, reg, val) \
 	({      unsigned long __upt_val = val;	\
 		switch(reg){						\
 		case R8: UPT_R8(regs) = __upt_val; break;		\
 		case R9: UPT_R9(regs) = __upt_val; break;		\
 		case R10: UPT_R10(regs) = __upt_val; break;		\
 		case R11: UPT_R11(regs) = __upt_val; break;		\
 		case R12: UPT_R12(regs) = __upt_val; break;		\
 		case R13: UPT_R13(regs) = __upt_val; break;		\
 		case R14: UPT_R14(regs) = __upt_val; break;		\
 		case R15: UPT_R15(regs) = __upt_val; break;		\
 		case RIP: UPT_IP(regs) = __upt_val; break;		\
 		case RSP: UPT_SP(regs) = __upt_val; break;		\
 		case RAX: UPT_RAX(regs) = __upt_val; break;		\
 		case RBX: UPT_RBX(regs) = __upt_val; break;		\
 		case RCX: UPT_RCX(regs) = __upt_val; break;		\
 		case RDX: UPT_RDX(regs) = __upt_val; break;		\
 		case RSI: UPT_RSI(regs) = __upt_val; break;		\
 		case RDI: UPT_RDI(regs) = __upt_val; break;		\
 		case RBP: UPT_RBP(regs) = __upt_val; break;		\
 		case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break;	\
 		case CS: UPT_CS(regs) = __upt_val; break;		\
 		case SS: UPT_SS(regs) = __upt_val; break;		\
 		case FS_BASE: UPT_FS_BASE(regs) = __upt_val; break;	\
 		case GS_BASE: UPT_GS_BASE(regs) = __upt_val; break;	\
 		case DS: UPT_DS(regs) = __upt_val; break;		\
 		case ES: UPT_ES(regs) = __upt_val; break;		\
 		case FS: UPT_FS(regs) = __upt_val; break;		\
 		case GS: UPT_GS(regs) = __upt_val; break;		\
 		case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break;	\
 		default :						\
 			panic("Bad register in UPT_SET : %d\n", reg);	\
 			break;						\
 		}							\
 		__upt_val;						\
 	})

 #define UPT_SET_SYSCALL_RETURN(r, res) \
 	REGS_SET_SYSCALL_RETURN((r)->regs, (res))

 #define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->gp)

 #define UPT_SEGV_IS_FIXABLE(r) REGS_SEGV_IS_FIXABLE(&r->skas)

 #define UPT_FAULTINFO(r) (&(r)->faultinfo)

 static inline void arch_init_registers(int pid)
 {
 }

 #endif
	/*
	* Copyright 2003 PathScale, Inc.
	* Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
	*
	* Licensed under the GPL
	*/

	#ifndef __SYSDEP_X86_64_PTRACE_H
	#define __SYSDEP_X86_64_PTRACE_H

	#include "user_constants.h"
	#include "sysdep/faultinfo.h"

	#define MAX_REG_OFFSET (UM_FRAME_SIZE)
	#define MAX_REG_NR ((MAX_REG_OFFSET) / sizeof(unsigned long))

	#include "skas_ptregs.h"

	#define REGS_IP(r) ((r)[HOST_IP])
	#define REGS_SP(r) ((r)[HOST_SP])

	#define REGS_RBX(r) ((r)[HOST_RBX])
	#define REGS_RCX(r) ((r)[HOST_RCX])
	#define REGS_RDX(r) ((r)[HOST_RDX])
	#define REGS_RSI(r) ((r)[HOST_RSI])
	#define REGS_RDI(r) ((r)[HOST_RDI])
	#define REGS_RBP(r) ((r)[HOST_RBP])
	#define REGS_RAX(r) ((r)[HOST_RAX])
	#define REGS_R8(r) ((r)[HOST_R8])
	#define REGS_R9(r) ((r)[HOST_R9])
	#define REGS_R10(r) ((r)[HOST_R10])
	#define REGS_R11(r) ((r)[HOST_R11])
	#define REGS_R12(r) ((r)[HOST_R12])
	#define REGS_R13(r) ((r)[HOST_R13])
	#define REGS_R14(r) ((r)[HOST_R14])
	#define REGS_R15(r) ((r)[HOST_R15])
	#define REGS_CS(r) ((r)[HOST_CS])
	#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS])
	#define REGS_SS(r) ((r)[HOST_SS])

	#define HOST_FS_BASE 21
	#define HOST_GS_BASE 22
	#define HOST_DS 23
	#define HOST_ES 24
	#define HOST_FS 25
	#define HOST_GS 26

	/* Also defined in asm/ptrace-x86_64.h, but not in libc headers. So, these
	* are already defined for kernel code, but not for userspace code.
	*/
	#ifndef FS_BASE
	/* These aren't defined in ptrace.h, but exist in struct user_regs_struct,
	* which is what x86_64 ptrace actually uses.
	*/
	#define FS_BASE (HOST_FS_BASE * sizeof(long))
	#define GS_BASE (HOST_GS_BASE * sizeof(long))
	#define DS (HOST_DS * sizeof(long))
	#define ES (HOST_ES * sizeof(long))
	#define FS (HOST_FS * sizeof(long))
	#define GS (HOST_GS * sizeof(long))
	#endif

	#define REGS_FS_BASE(r) ((r)[HOST_FS_BASE])
	#define REGS_GS_BASE(r) ((r)[HOST_GS_BASE])
	#define REGS_DS(r) ((r)[HOST_DS])
	#define REGS_ES(r) ((r)[HOST_ES])
	#define REGS_FS(r) ((r)[HOST_FS])
	#define REGS_GS(r) ((r)[HOST_GS])

	#define REGS_ORIG_RAX(r) ((r)[HOST_ORIG_RAX])

	#define REGS_SET_SYSCALL_RETURN(r, res) REGS_RAX(r) = (res)

	#define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r))

	#define REGS_SEGV_IS_FIXABLE(r) SEGV_IS_FIXABLE((r)->trap_type)

	#define REGS_FAULT_ADDR(r) ((r)->fault_addr)

	#define REGS_FAULT_WRITE(r) FAULT_WRITE((r)->fault_type)

	#define REGS_TRAP(r) ((r)->trap_type)

	#define REGS_ERR(r) ((r)->fault_type)

	struct uml_pt_regs {
	unsigned long gp[MAX_REG_NR];
	struct faultinfo faultinfo;
	long syscall;
	int is_user;
	};

	#define EMPTY_UML_PT_REGS { }

	#define UPT_RBX(r) REGS_RBX((r)->gp)
	#define UPT_RCX(r) REGS_RCX((r)->gp)
	#define UPT_RDX(r) REGS_RDX((r)->gp)
	#define UPT_RSI(r) REGS_RSI((r)->gp)
	#define UPT_RDI(r) REGS_RDI((r)->gp)
	#define UPT_RBP(r) REGS_RBP((r)->gp)
	#define UPT_RAX(r) REGS_RAX((r)->gp)
	#define UPT_R8(r) REGS_R8((r)->gp)
	#define UPT_R9(r) REGS_R9((r)->gp)
	#define UPT_R10(r) REGS_R10((r)->gp)
	#define UPT_R11(r) REGS_R11((r)->gp)
	#define UPT_R12(r) REGS_R12((r)->gp)
	#define UPT_R13(r) REGS_R13((r)->gp)
	#define UPT_R14(r) REGS_R14((r)->gp)
	#define UPT_R15(r) REGS_R15((r)->gp)
	#define UPT_CS(r) REGS_CS((r)->gp)
	#define UPT_FS_BASE(r) REGS_FS_BASE((r)->gp)
	#define UPT_FS(r) REGS_FS((r)->gp)
	#define UPT_GS_BASE(r) REGS_GS_BASE((r)->gp)
	#define UPT_GS(r) REGS_GS((r)->gp)
	#define UPT_DS(r) REGS_DS((r)->gp)
	#define UPT_ES(r) REGS_ES((r)->gp)
	#define UPT_CS(r) REGS_CS((r)->gp)
	#define UPT_SS(r) REGS_SS((r)->gp)
	#define UPT_ORIG_RAX(r) REGS_ORIG_RAX((r)->gp)

	#define UPT_IP(r) REGS_IP((r)->gp)
	#define UPT_SP(r) REGS_SP((r)->gp)

	#define UPT_EFLAGS(r) REGS_EFLAGS((r)->gp)
	#define UPT_SYSCALL_NR(r) ((r)->syscall)
	#define UPT_SYSCALL_RET(r) UPT_RAX(r)

	extern int user_context(unsigned long sp);

	#define UPT_IS_USER(r) ((r)->is_user)

	#define UPT_SYSCALL_ARG1(r) UPT_RDI(r)
	#define UPT_SYSCALL_ARG2(r) UPT_RSI(r)
	#define UPT_SYSCALL_ARG3(r) UPT_RDX(r)
	#define UPT_SYSCALL_ARG4(r) UPT_R10(r)
	#define UPT_SYSCALL_ARG5(r) UPT_R8(r)
	#define UPT_SYSCALL_ARG6(r) UPT_R9(r)

	struct syscall_args {
	unsigned long args[6];
	};

	#define SYSCALL_ARGS(r) ((struct syscall_args) \
	{ .args = { UPT_SYSCALL_ARG1(r), \
	UPT_SYSCALL_ARG2(r), \
	UPT_SYSCALL_ARG3(r), \
	UPT_SYSCALL_ARG4(r), \
	UPT_SYSCALL_ARG5(r), \
	UPT_SYSCALL_ARG6(r) } } )

	#define UPT_REG(regs, reg) \
	({ unsigned long val; \
	switch(reg){ \
	case R8: val = UPT_R8(regs); break; \
	case R9: val = UPT_R9(regs); break; \
	case R10: val = UPT_R10(regs); break; \
	case R11: val = UPT_R11(regs); break; \
	case R12: val = UPT_R12(regs); break; \
	case R13: val = UPT_R13(regs); break; \
	case R14: val = UPT_R14(regs); break; \
	case R15: val = UPT_R15(regs); break; \
	case RIP: val = UPT_IP(regs); break; \
	case RSP: val = UPT_SP(regs); break; \
	case RAX: val = UPT_RAX(regs); break; \
	case RBX: val = UPT_RBX(regs); break; \
	case RCX: val = UPT_RCX(regs); break; \
	case RDX: val = UPT_RDX(regs); break; \
	case RSI: val = UPT_RSI(regs); break; \
	case RDI: val = UPT_RDI(regs); break; \
	case RBP: val = UPT_RBP(regs); break; \
	case ORIG_RAX: val = UPT_ORIG_RAX(regs); break; \
	case CS: val = UPT_CS(regs); break; \
	case SS: val = UPT_SS(regs); break; \
	case FS_BASE: val = UPT_FS_BASE(regs); break; \
	case GS_BASE: val = UPT_GS_BASE(regs); break; \
	case DS: val = UPT_DS(regs); break; \
	case ES: val = UPT_ES(regs); break; \
	case FS : val = UPT_FS (regs); break; \
	case GS: val = UPT_GS(regs); break; \
	case EFLAGS: val = UPT_EFLAGS(regs); break; \
	default : \
	panic("Bad register in UPT_REG : %d\n", reg); \
	val = -1; \
	} \
	val; \
	})


	#define UPT_SET(regs, reg, val) \
	({ unsigned long __upt_val = val; \
	switch(reg){ \
	case R8: UPT_R8(regs) = __upt_val; break; \
	case R9: UPT_R9(regs) = __upt_val; break; \
	case R10: UPT_R10(regs) = __upt_val; break; \
	case R11: UPT_R11(regs) = __upt_val; break; \
	case R12: UPT_R12(regs) = __upt_val; break; \
	case R13: UPT_R13(regs) = __upt_val; break; \
	case R14: UPT_R14(regs) = __upt_val; break; \
	case R15: UPT_R15(regs) = __upt_val; break; \
	case RIP: UPT_IP(regs) = __upt_val; break; \
	case RSP: UPT_SP(regs) = __upt_val; break; \
	case RAX: UPT_RAX(regs) = __upt_val; break; \
	case RBX: UPT_RBX(regs) = __upt_val; break; \
	case RCX: UPT_RCX(regs) = __upt_val; break; \
	case RDX: UPT_RDX(regs) = __upt_val; break; \
	case RSI: UPT_RSI(regs) = __upt_val; break; \
	case RDI: UPT_RDI(regs) = __upt_val; break; \
	case RBP: UPT_RBP(regs) = __upt_val; break; \
	case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break; \
	case CS: UPT_CS(regs) = __upt_val; break; \
	case SS: UPT_SS(regs) = __upt_val; break; \
	case FS_BASE: UPT_FS_BASE(regs) = __upt_val; break; \
	case GS_BASE: UPT_GS_BASE(regs) = __upt_val; break; \
	case DS: UPT_DS(regs) = __upt_val; break; \
	case ES: UPT_ES(regs) = __upt_val; break; \
	case FS: UPT_FS(regs) = __upt_val; break; \
	case GS: UPT_GS(regs) = __upt_val; break; \
	case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break; \
	default : \
	panic("Bad register in UPT_SET : %d\n", reg); \
	break; \
	} \
	__upt_val; \
	})

	#define UPT_SET_SYSCALL_RETURN(r, res) \
	REGS_SET_SYSCALL_RETURN((r)->regs, (res))

	#define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->gp)

	#define UPT_SEGV_IS_FIXABLE(r) REGS_SEGV_IS_FIXABLE(&r->skas)

	#define UPT_FAULTINFO(r) (&(r)->faultinfo)

	static inline void arch_init_registers(int pid)
	{
	}

	#endif