From 9dde9dc0a81c7aeb863b35121d09011f09b4897c Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Mon, 5 Dec 2011 21:06:03 +0900 Subject: 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 Cc: "H. Peter Anvin" Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20111205120603.15475.91192.stgit@cloud Signed-off-by: Ingo Molnar --- arch/x86/tools/insn_sanity.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/x86/tools/insn_sanity.c b/arch/x86/tools/insn_sanity.c index b6720d6..cc2f8c1 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++; } -- cgit v1.1