[Crash-utility] [PATCH 1/4] symbols: Add linux_banner_vmlinux in symbol table

[HATAYAMA Daisuke]

From: HATAYAMA Daisuke <d.hatayama at jp.fujitsu.com>

Add linux_banner_vmlinux in symbol table, which we'll later use in
calc_kaslr_offset() to do a sanity check in calculation of
kaslr_offset and phys_base.
---
 defs.h    |  1 +
 symbols.c | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/defs.h b/defs.h
index d7adb23..17e9876 100644
--- a/defs.h
+++ b/defs.h
@@ -2714,6 +2714,7 @@ struct symbol_table_data {
 	ulong pti_init_vmlinux;
 	ulong kaiser_init_vmlinux;
 	int kernel_symbol_type;
+	ulong linux_banner_vmlinux;
 };
 
 /* flags for st */
diff --git a/symbols.c b/symbols.c
index 3b1f08a..b9de4a1 100644
--- a/symbols.c
+++ b/symbols.c
@@ -3226,6 +3226,11 @@ dump_symbol_table(void)
 		fprintf(fp, " kaiser_init_vmlinux: (unused)\n");
 	}
 
+	if (SADUMP_DUMPFILE())
+		fprintf(fp, "linux_banner_vmlinux: %lx\n", st->linux_banner_vmlinux);
+	else
+		fprintf(fp, "linux_banner_vmlinux: (unused)\n");
+
         fprintf(fp, "    symval_hash[%d]: %lx\n", SYMVAL_HASH,
                 (ulong)&st->symval_hash[0]);
 
@@ -12687,6 +12692,11 @@ numeric_forward(const void *P_x, const void *P_y)
 		else if (STREQ(y->name, "idt_table"))
 			st->idt_table_vmlinux = valueof(y);
 
+		if (STREQ(x->name, "linux_banner"))
+			st->linux_banner_vmlinux = valueof(x);
+		else if (STREQ(y->name, "linux_banner"))
+			st->linux_banner_vmlinux = valueof(y);
+
 		if (STREQ(x->name, "saved_command_line"))
 			st->saved_command_line_vmlinux = valueof(x);
 		else if (STREQ(y->name, "saved_command_line"))
-- 
1.8.3.1