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

mcinspect: add read memory value by specifying physical address

Browse Source 
Change-Id: I2f2d6cb981e883c5e2ae1e0c764e10e0fec76a46
This commit is contained in:
Masamichi Takagi
2020-06-15 13:20:39 +09:00
parent 2566f4f213
commit a7adb266ff
1 changed files with 16 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
executer/user/mcinspect.c
View File

@ -899,20 +899,25 @@ out:
/* IHK kernel inspection I/F */
#define IHK_OS_READ_KADDR 0x112a39
#define IHK_OS_READ_KADDR_VIRT 0
#define IHK_OS_READ_KADDR_PHYS 1
struct ihk_os_read_kaddr_desc {
unsigned long kaddr;
unsigned long len;
void *ubuf;
int flags;
};
void ihk_read_kernel(unsigned long addr,
unsigned long len, void *buf)
unsigned long len, void *buf, int flags)
{
struct ihk_os_read_kaddr_desc desc;
desc.kaddr = addr;
desc.len = len;
desc.ubuf = buf;
desc.flags = flags;
if (ioctl(mcfd, IHK_OS_READ_KADDR, &desc) != 0) {
fprintf(stderr, "%s: error: accessing kernel addr 0x%lx\n",
@ -922,13 +927,19 @@ void ihk_read_kernel(unsigned long addr,
}
#define ihk_read_val(addr, pval) \
ihk_read_kernel(addr, sizeof(*pval), (void *)pval)
ihk_read_kernel(addr, sizeof(*pval), (void *)pval, \
IHK_OS_READ_KADDR_VIRT)
#define ihk_read_val_phys(addr, pval) \
ihk_read_kernel(addr, sizeof(*pval), (void *)pval, \
IHK_OS_READ_KADDR_PHYS)
#define get_pointer_symbol_val(__variable__, pval) \
({ \
unsigned long addr; \
addr = DWARF_GET_VARIABLE_ADDRESS(__variable__); \
ihk_read_kernel(addr, sizeof(*pval), (void *)pval); \
ihk_read_kernel(addr, sizeof(*pval), (void *)pval, \
IHK_OS_READ_KADDR_VIRT); \
})
@ -1025,7 +1036,8 @@ void print_thread(int cpu,
memset(cmd_line, 0, cmd_line_len + 1);
ihk_read_val(proc + process_saved_cmdline_offset, &cmd_line_addr);
ihk_read_kernel(cmd_line_addr, cmd_line_len, cmd_line);
ihk_read_kernel(cmd_line_addr, cmd_line_len, cmd_line,
IHK_OS_READ_KADDR_VIRT);
comm = basename(cmd_line);
}