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authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2011-12-05 21:06:03 +0900
committerIngo Molnar <mingo@elte.hu>2011-12-05 14:53:23 +0100
commit9dde9dc0a81c7aeb863b35121d09011f09b4897c (patch)
treed0813e48df408ae78feaa742916fee95d45bda11
parenta9c373d03326e98c5f05ca64a1108790d25e28a9 (diff)
downloadlinux-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.c7
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++;
}