Signed-off-by: Lei Wen <leiwen@xxxxxxxxxxx>
---
help.c | 3 ++-
memory.c | 29 ++++++++++++++++++++++++++++-
2 files changed, 30 insertions(+), 2 deletions(-)
diff --git a/help.c b/help.c
index b8db00a..cb9e79a 100755
--- a/help.c
+++ b/help.c
@@ -1396,7 +1396,7 @@ NULL
char *help_rd[] = {
"rd",
"read memory",
-"[-adDsSupxmfN][-8|-16|-32|-64][-o offs][-e addr] [address|symbol] [count]",
+"[-adDsSupxmfN][-8|-16|-32|-64][-o offs][-e addr][-r [image]] [address|symbol] [count]",
" This command displays the contents of memory, with the output formatted",
" in several different manners. The starting address may be entered either",
" symbolically or by address. The default output size is the size of a long",
@@ -1427,6 +1427,7 @@ char *help_rd[] = {
" -N display output in network byte order (only valid for 16- and 32-bit",
" values)",
" -o offs offset the starting address by offs.",
+" -r image directly dump to the image file by raw data",
" -e addr display memory until reaching specified ending hexadecimal address.",
" address starting hexadecimal address:",
" 1 the default presumes a kernel virtual address.",
diff --git a/memory.c b/memory.c
index 9575d8e..073a4d4 100755
--- a/memory.c
+++ b/memory.c
@@ -264,6 +264,7 @@ static void dump_page_flags(ulonglong);
#define SLAB_CACHE (0x1000)
#define DISPLAY_ASCII (0x2000)
#define NET_ENDIAN (0x4000)
+#define DISPLAY_RAW (0x8000)
#define DISPLAY_TYPES (DISPLAY_ASCII|DISPLAY_8|DISPLAY_16|DISPLAY_32|DISPLAY_64)
#define ASCII_UNLIMITED ((ulong)(-1) >> 1)
@@ -966,6 +967,7 @@ cmd_rd(void)
ulonglong addr, endaddr;
ulong offset;
struct syment *sp;
+ FILE *tmp = NULL;
flag = HEXADECIMAL|DISPLAY_DEFAULT;
endaddr = 0;
@@ -973,7 +975,7 @@ cmd_rd(void)
memtype = KVADDR;
count = -1;
- while ((c = getopt(argcnt, args, "axme:pfudDusSNo:81:3:6:")) != EOF) {
+ while ((c = getopt(argcnt, args, "axme:r:pfudDusSNo:81:3:6:")) != EOF) {
switch(c)
{
case 'a':
@@ -1023,6 +1025,14 @@ cmd_rd(void)
endaddr = htoll(optarg, FAULT_ON_ERROR, NULL);
break;
+ case 'r':
+ flag |= DISPLAY_RAW;
+ tmp = fp;
+ fp = fopen(optarg, "w");
+ if (fp == NULL)
+ error(FATAL, "cannot open dump image\n");
+
+ break;
case 's':
case 'S':
if (flag & DISPLAY_DEFAULT) {
@@ -1160,6 +1170,10 @@ cmd_rd(void)
}
display_memory(addr, count, flag, memtype);
+ if (tmp) {
+ fclose(fp);
+ fp = tmp;
+ }
}
/*
@@ -1288,6 +1302,19 @@ display_memory(ulonglong addr, long count, ulong flag, int memtype)
break;
}
+ if (flag & DISPLAY_RAW) {
+ count *= typesz;
+ for (i = 0; i < count;){
+ a = (BUFSIZE > count - i) ? (count - i) : BUFSIZE;
+ readmem(addr + i, memtype, buf, a,
+ "raw dump to file", FAULT_ON_ERROR);
+ for (j = 0; j < a; j ++)
+ fputc(buf[j], fp);
+ i += a;
+ }
+ return;
+ }
+
for (i = a = 0; i < count; i++) {
readmem(addr, memtype, location, typesz,
readtype, FAULT_ON_ERROR);
--
1.7.0.4
--
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