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[MIPS] Kexec: Fix several 64-bit bugs.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2007-07-31 15:17:21 +01:00
parent 1065932fcb
commit 00be0f305f
1 changed files with 40 additions and 38 deletions
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78
arch/mips/kernel/relocate_kernel.S
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@ -14,67 +14,69 @@
#include <asm/stackframe.h> #include <asm/stackframe.h>
#include <asm/addrspace.h> #include <asm/addrspace.h>
.globl relocate_new_kernel LEAF(relocate_new_kernel)
relocate_new_kernel: PTR_L s0, kexec_indirection_page
PTR_L s1, kexec_start_address
PTR_L s0, kexec_indirection_page
PTR_L s1, kexec_start_address
process_entry: process_entry:
PTR_L s2, (s0) PTR_L s2, (s0)
PTR_ADD s0, s0, SZREG PTR_ADD s0, s0, SZREG
/* destination page */ /* destination page */
and s3, s2, 0x1 and s3, s2, 0x1
beq s3, zero, 1f beq s3, zero, 1f
and s4, s2, ~0x1 /* store destination addr in s4 */ and s4, s2, ~0x1 /* store destination addr in s4 */
move a0, s4 move a0, s4
b process_entry b process_entry
1: 1:
/* indirection page, update s0 */ /* indirection page, update s0 */
and s3, s2, 0x2 and s3, s2, 0x2
beq s3, zero, 1f beq s3, zero, 1f
and s0, s2, ~0x2 and s0, s2, ~0x2
b process_entry b process_entry
1: 1:
/* done page */ /* done page */
and s3, s2, 0x4 and s3, s2, 0x4
beq s3, zero, 1f beq s3, zero, 1f
b done b done
1: 1:
/* source page */ /* source page */
and s3, s2, 0x8 and s3, s2, 0x8
beq s3, zero, process_entry beq s3, zero, process_entry
and s2, s2, ~0x8 and s2, s2, ~0x8
li s6, (1 << PAGE_SHIFT) / SZREG li s6, (1 << PAGE_SHIFT) / SZREG
copy_word: copy_word:
/* copy page word by word */ /* copy page word by word */
REG_L s5, (s2) REG_L s5, (s2)
REG_S s5, (s4) REG_S s5, (s4)
INT_ADD s4, s4, SZREG PTR_ADD s4, s4, SZREG
INT_ADD s2, s2, SZREG PTR_ADD s2, s2, SZREG
INT_SUB s6, s6, 1 LONG_SUB s6, s6, 1
beq s6, zero, process_entry beq s6, zero, process_entry
b copy_word b copy_word
b process_entry b process_entry
done: done:
/* jump to kexec_start_address */ /* jump to kexec_start_address */
j s1 j s1
END(relocate_new_kernel)
.globl kexec_start_address
kexec_start_address: kexec_start_address:
.long 0x0 EXPORT(kexec_start_address)
PTR 0x0
.size kexec_start_address, PTRSIZE
.globl kexec_indirection_page
kexec_indirection_page: kexec_indirection_page:
.long 0x0 EXPORT(kexec_indirection_page)
PTR 0
.size kexec_indirection_page, PTRSIZE
relocate_new_kernel_end: relocate_new_kernel_end:
.globl relocate_new_kernel_size
relocate_new_kernel_size: relocate_new_kernel_size:
.long relocate_new_kernel_end - relocate_new_kernel EXPORT(relocate_new_kernel_size)
PTR relocate_new_kernel_end - relocate_new_kernel
.size relocate_new_kernel_size, PTRSIZE