diff options
| author | Avi Kivity <avi@redhat.com> | 2012-08-05 13:25:10 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-08-05 13:25:10 +0300 |
| commit | fe56097b23b1303b894eefd91582e4a64247d03f (patch) | |
| tree | 4b3ab60eb19e8cfe2884e2da66dd4e4e25ae2274 /arch/arm/vfp/vfphw.S | |
| parent | e115676e042f4d9268c6b6d8cb7dc962aa6cfd7d (diff) | |
| parent | e7882d6c40874a5b5033ca85f7508a602a60b662 (diff) | |
Merge remote-tracking branch 'upstream' into next
- bring back critical fixes (esp. aa67f6096c19bc)
- provide an updated base for development
* upstream: (4334 commits)
missed mnt_drop_write() in do_dentry_open()
UBIFS: nuke pdflush from comments
gfs2: nuke pdflush from comments
drbd: nuke pdflush from comments
nilfs2: nuke write_super from comments
hfs: nuke write_super from comments
vfs: nuke pdflush from comments
jbd/jbd2: nuke write_super from comments
btrfs: nuke pdflush from comments
btrfs: nuke write_super from comments
ext4: nuke pdflush from comments
ext4: nuke write_super from comments
ext3: nuke write_super from comments
Documentation: fix the VM knobs descritpion WRT pdflush
Documentation: get rid of write_super
vfs: kill write_super and sync_supers
ACPI processor: Fix tick_broadcast_mask online/offline regression
ACPI: Only count valid srat memory structures
ACPI: Untangle a return statement for better readability
Linux 3.6-rc1
...
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/arm/vfp/vfphw.S')
| -rw-r--r-- | arch/arm/vfp/vfphw.S | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/arch/arm/vfp/vfphw.S b/arch/arm/vfp/vfphw.S index 2d30c7f6edd..ea0349f6358 100644 --- a/arch/arm/vfp/vfphw.S +++ b/arch/arm/vfp/vfphw.S @@ -16,6 +16,7 @@ */ #include <asm/thread_info.h> #include <asm/vfpmacros.h> +#include <linux/kern_levels.h> #include "../kernel/entry-header.S" .macro DBGSTR, str @@ -24,7 +25,7 @@ add r0, pc, #4 bl printk b 1f - .asciz "<7>VFP: \str\n" + .asciz KERN_DEBUG "VFP: \str\n" .balign 4 1: ldmfd sp!, {r0-r3, ip, lr} #endif @@ -37,7 +38,7 @@ add r0, pc, #4 bl printk b 1f - .asciz "<7>VFP: \str\n" + .asciz KERN_DEBUG "VFP: \str\n" .balign 4 1: ldmfd sp!, {r0-r3, ip, lr} #endif @@ -52,7 +53,7 @@ add r0, pc, #4 bl printk b 1f - .asciz "<7>VFP: \str\n" + .asciz KERN_DEBUG "VFP: \str\n" .balign 4 1: ldmfd sp!, {r0-r3, ip, lr} #endif @@ -61,13 +62,13 @@ @ VFP hardware support entry point. @ -@ r0 = faulted instruction -@ r2 = faulted PC+4 -@ r9 = successful return +@ r0 = instruction opcode (32-bit ARM or two 16-bit Thumb) +@ r2 = PC value to resume execution after successful emulation +@ r9 = normal "successful" return address @ r10 = vfp_state union @ r11 = CPU number -@ lr = failure return - +@ lr = unrecognised instruction return address +@ IRQs enabled. ENTRY(vfp_support_entry) DBGSTR3 "instr %08x pc %08x state %p", r0, r2, r10 @@ -161,9 +162,12 @@ vfp_hw_state_valid: @ exception before retrying branch @ out before setting an FPEXC that @ stops us reading stuff - VFPFMXR FPEXC, r1 @ restore FPEXC last - sub r2, r2, #4 - str r2, [sp, #S_PC] @ retry the instruction + VFPFMXR FPEXC, r1 @ Restore FPEXC last + sub r2, r2, #4 @ Retry current instruction - if Thumb + str r2, [sp, #S_PC] @ mode it's two 16-bit instructions, + @ else it's one 32-bit instruction, so + @ always subtract 4 from the following + @ instruction address. #ifdef CONFIG_PREEMPT get_thread_info r10 ldr r4, [r10, #TI_PREEMPT] @ get preempt count |