1 files changed, 0 insertions, 199 deletions
diff --git a/tools/net/bpf_jit_disasm.c b/tools/net/bpf_jit_disasm.c
deleted file mode 100644
index cfe0cdcda3de..000000000000
--- a/tools/net/bpf_jit_disasm.c
+++ /dev/null
@@ -1,199 +0,0 @@
-/*
- * Minimal BPF JIT image disassembler
- *
- * Disassembles BPF JIT compiler emitted opcodes back to asm insn's for
- * debugging or verification purposes.
- *
- * To get the disassembly of the JIT code, do the following:
- *
- *  1) `echo 2 > /proc/sys/net/core/bpf_jit_enable`
- *  2) Load a BPF filter (e.g. `tcpdump -p -n -s 0 -i eth1 host 192.168.20.0/24`)
- *  3) Run e.g. `bpf_jit_disasm -o` to read out the last JIT code
- *
- * Copyright 2013 Daniel Borkmann <borkmann@redhat.com>
- * Licensed under the GNU General Public License, version 2.0 (GPLv2)
- */
-
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <assert.h>
-#include <unistd.h>
-#include <string.h>
-#include <bfd.h>
-#include <dis-asm.h>
-#include <sys/klog.h>
-#include <sys/types.h>
-#include <regex.h>
-
-static void get_exec_path(char *tpath, size_t size)
-{
-	char *path;
-	ssize_t len;
-
-	snprintf(tpath, size, "/proc/%d/exe", (int) getpid());
-	tpath[size - 1] = 0;
-
-	path = strdup(tpath);
-	assert(path);
-
-	len = readlink(path, tpath, size);
-	tpath[len] = 0;
-
-	free(path);
-}
-
-static void get_asm_insns(uint8_t *image, size_t len, unsigned long base,
-			  int opcodes)
-{
-	int count, i, pc = 0;
-	char tpath[256];
-	struct disassemble_info info;
-	disassembler_ftype disassemble;
-	bfd *bfdf;
-
-	memset(tpath, 0, sizeof(tpath));
-	get_exec_path(tpath, sizeof(tpath));
-
-	bfdf = bfd_openr(tpath, NULL);
-	assert(bfdf);
-	assert(bfd_check_format(bfdf, bfd_object));
-
-	init_disassemble_info(&info, stdout, (fprintf_ftype) fprintf);
-	info.arch = bfd_get_arch(bfdf);
-	info.mach = bfd_get_mach(bfdf);
-	info.buffer = image;
-	info.buffer_length = len;
-
-	disassemble_init_for_target(&info);
-
-	disassemble = disassembler(bfdf);
-	assert(disassemble);
-
-	do {
-		printf("%4x:\t", pc);
-
-		count = disassemble(pc, &info);
-
-		if (opcodes) {
-			printf("\n\t");
-			for (i = 0; i < count; ++i)
-				printf("%02x ", (uint8_t) image[pc + i]);
-		}
-		printf("\n");
-
-		pc += count;
-	} while(count > 0 && pc < len);
-
-	bfd_close(bfdf);
-}
-
-static char *get_klog_buff(int *klen)
-{
-	int ret, len = klogctl(10, NULL, 0);
-	char *buff = malloc(len);
-
-	assert(buff && klen);
-	ret = klogctl(3, buff, len);
-	assert(ret >= 0);
-	*klen = ret;
-
-	return buff;
-}
-
-static void put_klog_buff(char *buff)
-{
-	free(buff);
-}
-
-static int get_last_jit_image(char *haystack, size_t hlen,
-			      uint8_t *image, size_t ilen,
-			      unsigned long *base)
-{
-	char *ptr, *pptr, *tmp;
-	off_t off = 0;
-	int ret, flen, proglen, pass, ulen = 0;
-	regmatch_t pmatch[1];
-	regex_t regex;
-
-	if (hlen == 0)
-		return 0;
-
-	ret = regcomp(&regex, "flen=[[:alnum:]]+ proglen=[[:digit:]]+ "
-		      "pass=[[:digit:]]+ image=[[:xdigit:]]+", REG_EXTENDED);
-	assert(ret == 0);
-
-	ptr = haystack;
-	while (1) {
-		ret = regexec(&regex, ptr, 1, pmatch, 0);
-		if (ret == 0) {
-			ptr += pmatch[0].rm_eo;
-			off += pmatch[0].rm_eo;
-			assert(off < hlen);
-		} else
-			break;
-	}
-
-	ptr = haystack + off - (pmatch[0].rm_eo - pmatch[0].rm_so);
-	ret = sscanf(ptr, "flen=%d proglen=%d pass=%d image=%lx",
-		     &flen, &proglen, &pass, base);
-	if (ret != 4)
-		return 0;
-
-	tmp = ptr = haystack + off;
-	while ((ptr = strtok(tmp, "\n")) != NULL && ulen < ilen) {
-		tmp = NULL;
-		if (!strstr(ptr, "JIT code"))
-			continue;
-		pptr = ptr;
-		while ((ptr = strstr(pptr, ":")))
-			pptr = ptr + 1;
-		ptr = pptr;
-		do {
-			image[ulen++] = (uint8_t) strtoul(pptr, &pptr, 16);
-			if (ptr == pptr || ulen >= ilen) {
-				ulen--;
-				break;
-			}
-			ptr = pptr;
-		} while (1);
-	}
-
-	assert(ulen == proglen);
-	printf("%d bytes emitted from JIT compiler (pass:%d, flen:%d)\n",
-	       proglen, pass, flen);
-	printf("%lx + <x>:\n", *base);
-
-	regfree(&regex);
-	return ulen;
-}
-
-int main(int argc, char **argv)
-{
-	int len, klen, opcodes = 0;
-	char *kbuff;
-	unsigned long base;
-	uint8_t image[4096];
-
-	if (argc > 1) {
-		if (!strncmp("-o", argv[argc - 1], 2)) {
-			opcodes = 1;
-		} else {
-			printf("usage: bpf_jit_disasm [-o: show opcodes]\n");
-			exit(0);
-		}
-	}
-
-	bfd_init();
-	memset(image, 0, sizeof(image));
-
-	kbuff = get_klog_buff(&klen);
-
-	len = get_last_jit_image(kbuff, klen, image, sizeof(image), &base);
-	if (len > 0 && base > 0)
-		get_asm_insns(image, len, base, opcodes);
-
-	put_klog_buff(kbuff);
-
-	return 0;
-}