parisc: fix unwind with recent gcc versions

kernel unwinding is broken with gcc >= 4.x.  Part of the problem is that
binutils seems very sensitive to where the unwind information is stored.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/parisc/kernel/unwind.c b/arch/parisc/kernel/unwind.c
index 69dad5a850a8392f5f520dd164f4dda9a4d5445a..a36799e85693d7b30d7a9acf1f2703709ad77bcb 100644 (file)
--- a/arch/parisc/kernel/unwind.c
+++ b/arch/parisc/kernel/unwind.c
@@ -28,7 +28,7 @@
 #define dbg(x...)
 #endif
 
-#define KERNEL_START (KERNEL_BINARY_TEXT_START - 0x1000)
+#define KERNEL_START (KERNEL_BINARY_TEXT_START)
 
 extern struct unwind_table_entry __start___unwind[];
 extern struct unwind_table_entry __stop___unwind[];

diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S
index fda4baa059b5002a99f64fdb832cf134b20756ee..9dab4a4e09f7af86d5dbe6a5a8e129393d619a42 100644 (file)
--- a/arch/parisc/kernel/vmlinux.lds.S
+++ b/arch/parisc/kernel/vmlinux.lds.S
@@ -78,9 +78,6 @@ SECTIONS
         */
        . = ALIGN(PAGE_SIZE);
        data_start = .;
-       EXCEPTION_TABLE(16)
-
-       NOTES
 
        /* unwind info */
        .PARISC.unwind : {
@@ -89,6 +86,9 @@ SECTIONS
                __stop___unwind = .;
        }
 
+       EXCEPTION_TABLE(16)
+       NOTES
+
        /* Data */
        RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)