cregit-Linux how code gets into the kernel

Release 4.14 arch/x86/um/shared/sysdep/ptrace.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __SYSDEP_X86_PTRACE_H

#define __SYSDEP_X86_PTRACE_H

#include <generated/user_constants.h>
#include <sysdep/faultinfo.h>


#define MAX_REG_OFFSET (UM_FRAME_SIZE)

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


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

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

#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS])

#define REGS_AX(r) ((r)[HOST_AX])

#define REGS_BX(r) ((r)[HOST_BX])

#define REGS_CX(r) ((r)[HOST_CX])

#define REGS_DX(r) ((r)[HOST_DX])

#define REGS_SI(r) ((r)[HOST_SI])

#define REGS_DI(r) ((r)[HOST_DI])

#define REGS_BP(r) ((r)[HOST_BP])

#define REGS_CS(r) ((r)[HOST_CS])

#define REGS_SS(r) ((r)[HOST_SS])

#define REGS_DS(r) ((r)[HOST_DS])

#define REGS_ES(r) ((r)[HOST_ES])


#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_AX(r) REGS_AX((r)->gp)

#define UPT_BX(r) REGS_BX((r)->gp)

#define UPT_CX(r) REGS_CX((r)->gp)

#define UPT_DX(r) REGS_DX((r)->gp)

#define UPT_SI(r) REGS_SI((r)->gp)

#define UPT_DI(r) REGS_DI((r)->gp)

#define UPT_BP(r) REGS_BP((r)->gp)

#define UPT_CS(r) REGS_CS((r)->gp)

#define UPT_SS(r) REGS_SS((r)->gp)

#define UPT_DS(r) REGS_DS((r)->gp)

#define UPT_ES(r) REGS_ES((r)->gp)

#ifdef __i386__
#include "ptrace_32.h"
#else
#include "ptrace_64.h"
#endif


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) } } )


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


#define EMPTY_UML_PT_REGS { }


#define UPT_SYSCALL_NR(r) ((r)->syscall)

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

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

extern int user_context(unsigned long sp);

#endif /* __SYSDEP_X86_PTRACE_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Al Viro30095.24%350.00%
Linus Torvalds92.86%116.67%
Eric Paris51.59%116.67%
Greg Kroah-Hartman10.32%116.67%
Total315100.00%6100.00%
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