gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Following arm64-support to development branch

Browse Source 
This includes the following fixes:
* fix build of arch/arm64/kernel/vdso

Change-Id: I73b05034d29f7f8731ac17f9736edbba4fb2c639
This commit is contained in:
Takehiro Shiratori
2019-01-30 16:27:03 +09:00
committed by Dominique Martinet
parent e52d748744
commit d4d78e9c61
66 changed files with 3110 additions and 1209 deletions
Download Patch File Download Diff File Expand all files Collapse all files

243
executer/user/arch/arm64/arch_args.h
View File

@ -4,123 +4,300 @@
#include <asm/ptrace.h>
typedef struct user_pt_regs syscall_args;
#ifndef NT_ARM_SYSTEM_CALL
#define NT_ARM_SYSTEM_CALL 0x404 /* ARM system call number */
#endif /* !NT_ARM_SYSTEM_CALL */
typedef struct {
struct user_pt_regs regs;
unsigned long orig_x0;
unsigned long ret_value;
pid_t target_pid;
int bypass;
} syscall_args;
enum ptrace_syscall_dir {
PTRACE_SYSCALL_ENTER = 0,
PTRACE_SYSCALL_EXIT,
};
static inline int
syscall_enter(syscall_args *args)
{
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return -1;
}
switch (args->regs.regs[7]) {
case PTRACE_SYSCALL_ENTER:
return 1;
case PTRACE_SYSCALL_EXIT:
return 0;
default:
printf("%s: x7 is neither SYSCALL_ENTER nor SYSCALL_EXIT.\n",
__func__);
return -1;
}
}
static inline int
get_syscall_args(int pid, syscall_args *args)
{
/* TODO: skeleton for UTI */
return -1;
struct iovec iov;
long ret = -1;
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return -1;
}
args->target_pid = pid;
args->bypass = 0;
memset(&iov, 0, sizeof(iov));
iov.iov_base = &args->regs;
iov.iov_len = sizeof(args->regs);
ret = ptrace(PTRACE_GETREGSET, pid, NT_PRSTATUS, &iov);
if (!ret) {
if (syscall_enter(args)) {
args->orig_x0 = args->regs.regs[0];
args->ret_value = 0;
}
else {
/* orig_x0 is saved */
args->ret_value = args->regs.regs[0];
}
}
return ret;
}
static inline int
set_syscall_args(int pid, syscall_args *args)
{
/* TODO: skeleton for UTI */
return -1;
struct iovec iov;
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return -1;
}
memset(&iov, 0, sizeof(iov));
iov.iov_base = &args->regs;
iov.iov_len = sizeof(args->regs);
return ptrace(PTRACE_SETREGSET, pid, NT_PRSTATUS, &iov);
}
static inline unsigned long
get_syscall_number(syscall_args *args)
{
/* TODO: skeleton for UTI */
return 0;
}
int sysno = -1;
long ret = -1;
struct iovec iov;
static inline unsigned long
get_syscall_return(syscall_args *args)
{
/* TODO: skeleton for UTI */
return 0;
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return -1;
}
memset(&iov, 0, sizeof(iov));
iov.iov_base = &sysno;
iov.iov_len = sizeof(sysno);
ret = ptrace(PTRACE_GETREGSET, args->target_pid, NT_ARM_SYSTEM_CALL,
&iov);
if (ret) {
printf("%s: ptrace(PTRACE_GETREGSET) failed. (%d)",
__func__, errno);
}
return sysno;
}
static inline unsigned long
get_syscall_arg1(syscall_args *args)
{
/* TODO: skeleton for UTI */
return 0;
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return 0;
}
return args->orig_x0;
}
static inline unsigned long
get_syscall_arg2(syscall_args *args)
{
/* TODO: skeleton for UTI */
return 0;
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return 0;
}
return args->regs.regs[1];
}
static inline unsigned long
get_syscall_arg3(syscall_args *args)
{
/* TODO: skeleton for UTI */
return 0;
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return 0;
}
return args->regs.regs[2];
}
static inline unsigned long
get_syscall_arg4(syscall_args *args)
{
/* TODO: skeleton for UTI */
return 0;
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return 0;
}
return args->regs.regs[3];
}
static inline unsigned long
get_syscall_arg5(syscall_args *args)
{
/* TODO: skeleton for UTI */
return 0;
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return 0;
}
return args->regs.regs[4];
}
static inline unsigned long
get_syscall_arg6(syscall_args *args)
{
/* TODO: skeleton for UTI */
return 0;
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return 0;
}
return args->regs.regs[5];
}
static inline void
set_syscall_number(syscall_args *args, unsigned long value)
{
/* TODO: skeleton for UTI */
int sysno = (int)value;
long ret = -1;
struct iovec iov;
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return;
}
memset(&iov, 0, sizeof(iov));
iov.iov_base = &sysno;
iov.iov_len = sizeof(sysno);
ret = ptrace(PTRACE_SETREGSET, args->target_pid, NT_ARM_SYSTEM_CALL,
&iov);
if (ret) {
printf("%s: ptrace(PTRACE_GETREGSET) failed. (%d)",
__func__, errno);
}
else {
if (value == (unsigned long)-1) {
args->bypass = 1;
}
}
}
static inline void
set_syscall_ret_or_arg1(syscall_args *args, unsigned long value, int ret_flag)
{
/* called by set_syscall_return() */
if (ret_flag == 1) {
/* stopped syscall-enter */
if (syscall_enter(args) == 1) {
/* syscall no bypass */
if (args->bypass != 1) {
/* no effect */
goto out;
}
}
}
/* called by set_syscall_arg1() */
else if (ret_flag == 0) {
/* stopped syscall-return */
if (syscall_enter(args) == 0) {
/* no effect */
goto out;
}
/* set original arg1 */
args->orig_x0 = value;
}
/* illegal ret_flag */
else {
/* no effect */
goto out;
}
/* set value */
args->regs.regs[0] = value;
out:
return;
}
static inline void
set_syscall_return(syscall_args *args, unsigned long value)
{
/* TODO: skeleton for UTI */
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return;
}
set_syscall_ret_or_arg1(args, value, 1);
}
static inline void
set_syscall_arg1(syscall_args *args, unsigned long value)
{
/* TODO: skeleton for UTI */
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return;
}
set_syscall_ret_or_arg1(args, value, 0);
}
static inline void
set_syscall_arg2(syscall_args *args, unsigned long value)
{
/* TODO: skeleton for UTI */
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return;
}
args->regs.regs[1] = value;
}
static inline void
set_syscall_arg3(syscall_args *args, unsigned long value)
{
/* TODO: skeleton for UTI */
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return;
}
args->regs.regs[2] = value;
}
static inline void
set_syscall_arg4(syscall_args *args, unsigned long value)
{
/* TODO: skeleton for UTI */
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return;
}
args->regs.regs[3] = value;
}
static inline void
set_syscall_arg5(syscall_args *args, unsigned long value)
{
/* TODO: skeleton for UTI */
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return;
}
args->regs.regs[4] = value;
}
static inline void
set_syscall_arg6(syscall_args *args, unsigned long value)
{
/* TODO: skeleton for UTI */
if (!args) {
printf("%s: input args is NULL.\n", __func__);
return;
}
args->regs.regs[5] = value;
}
#endif /* !ARCH_ARGS_H */