add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/tools/bpf/bpftool/jit_disasm.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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 /*
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  * Based on:
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  *
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@@ -14,36 +15,27 @@
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 #include <stdio.h>
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 #include <stdarg.h>
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 #include <stdint.h>
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-#include <stdio.h>
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 #include <stdlib.h>
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 #include <assert.h>
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 #include <unistd.h>
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 #include <string.h>
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 #include <bfd.h>
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 #include <dis-asm.h>
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-#include <sys/types.h>
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 #include <sys/stat.h>
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 #include <limits.h>
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+#include <bpf/libbpf.h>
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27
 
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 #include "json_writer.h"
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 #include "main.h"
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 static void get_exec_path(char *tpath, size_t size)
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 {
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+	const char *path = "/proc/self/exe";
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 	ssize_t len;
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-	char *path;
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-
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-	snprintf(tpath, size, "/proc/%d/exe", (int) getpid());
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-	tpath[size - 1] = 0;
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-
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-	path = strdup(tpath);
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-	assert(path);
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 	len = readlink(path, tpath, size - 1);
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 	assert(len > 0);
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 	tpath[len] = 0;
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-
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-	free(path);
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 }
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40
 
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 static int oper_count;
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@@ -82,10 +74,16 @@
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 }
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 void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes,
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-		       const char *arch)
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+		       const char *arch, const char *disassembler_options,
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+		       const struct btf *btf,
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+		       const struct bpf_prog_linfo *prog_linfo,
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+		       __u64 func_ksym, unsigned int func_idx,
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+		       bool linum)
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 {
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+	const struct bpf_line_info *linfo = NULL;
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 	disassembler_ftype disassemble;
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 	struct disassemble_info info;
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+	unsigned int nr_skip = 0;
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 	int count, i, pc = 0;
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 	char tpath[PATH_MAX];
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 	bfd *bfdf;
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@@ -114,13 +112,15 @@
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 		if (inf) {
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 			bfdf->arch_info = inf;
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 		} else {
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-			p_err("No libfd support for %s", arch);
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+			p_err("No libbfd support for %s", arch);
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 			return;
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 		}
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 	}
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 	info.arch = bfd_get_arch(bfdf);
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 	info.mach = bfd_get_mach(bfdf);
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+	if (disassembler_options)
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+		info.disassembler_options = disassembler_options;
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 	info.buffer = image;
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 	info.buffer_length = len;
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@@ -139,12 +139,26 @@
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 	if (json_output)
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 		jsonw_start_array(json_wtr);
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 	do {
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+		if (prog_linfo) {
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+			linfo = bpf_prog_linfo__lfind_addr_func(prog_linfo,
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+								func_ksym + pc,
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+								func_idx,
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+								nr_skip);
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+			if (linfo)
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+				nr_skip++;
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+		}
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+
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 		if (json_output) {
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 			jsonw_start_object(json_wtr);
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 			oper_count = 0;
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+			if (linfo)
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+				btf_dump_linfo_json(btf, linfo, linum);
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 			jsonw_name(json_wtr, "pc");
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 			jsonw_printf(json_wtr, "\"0x%x\"", pc);
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 		} else {
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+			if (linfo)
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+				btf_dump_linfo_plain(btf, linfo, "; ",
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+						     linum);
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 			printf("%4x:\t", pc);
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 		}
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@@ -186,3 +200,9 @@
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 	bfd_close(bfdf);
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 }
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+
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+int disasm_init(void)
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+{
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+	bfd_init();
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+	return 0;
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+}