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authorRalf Baechle <ralf@linux-mips.org>2006-10-24 02:29:01 +0100
committerRalf Baechle <ralf@linux-mips.org>2006-11-01 17:46:09 +0000
commit242954b5aa8e5ec84f46a84637daf08ee4247c6e (patch)
tree7fb896349b377f5f819d4050bb92eeee05598571 /arch/mips/kernel
parent4b1c46a383aafc137bc91a0f9698bfc11e062d1b (diff)
[MIPS] 16K & 64K page size fixes
Derived from Peter Watkins <treestem@gmail.com>'s work. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel')
-rw-r--r--arch/mips/kernel/asm-offsets.c2
-rw-r--r--arch/mips/kernel/head.S3
-rw-r--r--arch/mips/kernel/r4k_switch.S5
-rw-r--r--arch/mips/kernel/vmlinux.lds.S10
4 files changed, 18 insertions, 2 deletions
diff --git a/arch/mips/kernel/asm-offsets.c b/arch/mips/kernel/asm-offsets.c
index e9ce5b3721a..ff88b06f89d 100644
--- a/arch/mips/kernel/asm-offsets.c
+++ b/arch/mips/kernel/asm-offsets.c
@@ -22,7 +22,7 @@
#define offset(string, ptr, member) \
__asm__("\n@@@" string "%0" : : "i" (_offset(ptr, member)))
#define constant(string, member) \
- __asm__("\n@@@" string "%x0" : : "ri" (member))
+ __asm__("\n@@@" string "%X0" : : "ri" (member))
#define size(string, size) \
__asm__("\n@@@" string "%0" : : "i" (sizeof(size)))
#define linefeed text("")
diff --git a/arch/mips/kernel/head.S b/arch/mips/kernel/head.S
index 8c6db0fc72f..ddc1b71c937 100644
--- a/arch/mips/kernel/head.S
+++ b/arch/mips/kernel/head.S
@@ -189,7 +189,8 @@ NESTED(kernel_entry, 16, sp) # kernel entry point
MTC0 zero, CP0_CONTEXT # clear context register
PTR_LA $28, init_thread_union
- PTR_ADDIU sp, $28, _THREAD_SIZE - 32
+ PTR_LI sp, _THREAD_SIZE - 32
+ PTR_ADDU sp, $28
set_saved_sp sp, t0, t1
PTR_SUBU sp, 4 * SZREG # init stack pointer
diff --git a/arch/mips/kernel/r4k_switch.S b/arch/mips/kernel/r4k_switch.S
index d5c8b82fed7..cc566cf1224 100644
--- a/arch/mips/kernel/r4k_switch.S
+++ b/arch/mips/kernel/r4k_switch.S
@@ -85,7 +85,12 @@
move $28, a2
cpu_restore_nonscratch a1
+#if (_THREAD_SIZE - 32) < 0x10000
PTR_ADDIU t0, $28, _THREAD_SIZE - 32
+#else
+ PTR_LI t0, _THREAD_SIZE - 32
+ PTR_ADDU t0, $28
+#endif
set_saved_sp t0, t1, t2
#ifdef CONFIG_MIPS_MT_SMTC
/* Read-modify-writes of Status must be atomic on a VPE */
diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S
index 25ed3337ce3..79f0317d84a 100644
--- a/arch/mips/kernel/vmlinux.lds.S
+++ b/arch/mips/kernel/vmlinux.lds.S
@@ -50,6 +50,16 @@ SECTIONS
/* writeable */
.data : { /* Data */
. = . + DATAOFFSET; /* for CONFIG_MAPPED_KERNEL */
+ /*
+ * This ALIGN is needed as a workaround for a bug a gcc bug upto 4.1 which
+ * limits the maximum alignment to at most 32kB and results in the following
+ * warning:
+ *
+ * CC arch/mips/kernel/init_task.o
+ * arch/mips/kernel/init_task.c:30: warning: alignment of ‘init_thread_union’
+ * is greater than maximum object file alignment. Using 32768
+ */
+ . = ALIGN(_PAGE_SIZE);
*(.data.init_task)
*(.data)