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mcinspect: add read memory value by specifying physical address

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