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| author | Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> | 2011-12-05 21:06:03 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-12-05 14:53:23 +0100 |
| commit | 9dde9dc0a81c7aeb863b35121d09011f09b4897c (patch) | |
| tree | d0813e48df408ae78feaa742916fee95d45bda11 | |
| parent | a9c373d03326e98c5f05ca64a1108790d25e28a9 (diff) | |
| download | linux-9dde9dc0a81c7aeb863b35121d09011f09b4897c.tar.bz2 | |
x86/tools: Add decoded instruction dump mode
Add instruction dump mode to insn_sanity tool for
checking decoder really decoded instructions.
This mode is enabled when passing double -v (-vv) to
insn_sanity. It is useful for who wants to check whether
the decoder can decode some instructions correctly.
e.g.
$ echo 0f 73 10 11 | ./insn_sanity -y -vv -i -
Instruction = {
.prefixes = {
.value = 0, bytes[] = {0, 0, 0, 0},
.got = 1, .nbytes = 0},
.rex_prefix = {
.value = 0, bytes[] = {0, 0, 0, 0},
.got = 1, .nbytes = 0},
.vex_prefix = {
.value = 0, bytes[] = {0, 0, 0, 0},
.got = 1, .nbytes = 0},
.opcode = {
.value = 29455, bytes[] = {f, 73, 0, 0},
.got = 1, .nbytes = 2},
.modrm = {
.value = 16, bytes[] = {10, 0, 0, 0},
.got = 1, .nbytes = 1},
.sib = {
.value = 0, bytes[] = {0, 0, 0, 0},
.got = 1, .nbytes = 0},
.displacement = {
.value = 0, bytes[] = {0, 0, 0, 0},
.got = 1, .nbytes = 0},
.immediate1 = {
.value = 17, bytes[] = {11, 0, 0, 0},
.got = 1, .nbytes = 1},
.immediate2 = {
.value = 0, bytes[] = {0, 0, 0, 0},
.got = 0, .nbytes = 0},
.attr = 44800, .opnd_bytes = 4, .addr_bytes = 8,
.length = 4, .x86_64 = 1, .kaddr = 0x7fff0f7d9430}
Success: decoded and checked 1 given instructions with 0 errors (seed:0x0)
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: yrl.pp-manager.tt@hitachi.com
Link: http://lkml.kernel.org/r/20111205120603.15475.91192.stgit@cloud
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/tools/insn_sanity.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/x86/tools/insn_sanity.c b/arch/x86/tools/insn_sanity.c index b6720d6b38cb..cc2f8c131286 100644 --- a/arch/x86/tools/insn_sanity.c +++ b/arch/x86/tools/insn_sanity.c @@ -59,7 +59,7 @@ static void usage(const char *err) fprintf(stderr, "Usage: %s [-y|-n|-v] [-s seed[,no]] [-m max] [-i input]\n", prog); fprintf(stderr, "\t-y 64bit mode\n"); fprintf(stderr, "\t-n 32bit mode\n"); - fprintf(stderr, "\t-v Verbose mode\n"); + fprintf(stderr, "\t-v Verbosity(-vv dumps any decoded result)\n"); fprintf(stderr, "\t-s Give a random seed (and iteration number)\n"); fprintf(stderr, "\t-m Give a maximum iteration number\n"); fprintf(stderr, "\t-i Give an input file with decoded binary\n"); @@ -188,7 +188,7 @@ static void parse_args(int argc, char **argv) x86_64 = 0; break; case 'v': - verbose = 1; + verbose++; break; case 'i': if (strcmp("-", optarg) == 0) @@ -264,7 +264,8 @@ int main(int argc, char **argv) errors++; } else if (verbose && !insn_complete(&insn)) dump_stream(stdout, "Info: Found an undecodable input", i, insn_buf, &insn); - + else if (verbose >= 2) + dump_insn(stdout, &insn); insns++; } |