1 files changed, 25 insertions, 3 deletions

diff --git a/include/asm-powerpc/processor.h b/include/asm-powerpc/processor.h
index cf83f2d7e2a5..101ed87f7d84 100644
--- a/include/asm-powerpc/processor.h
+++ b/include/asm-powerpc/processor.h
@@ -12,6 +12,12 @@
 
 #include <asm/reg.h>
 
+#ifdef CONFIG_VSX
+#define TS_FPRWIDTH 2
+#else
+#define TS_FPRWIDTH 1
+#endif
+
 #ifndef __ASSEMBLY__
 #include <linux/compiler.h>
 #include <asm/ptrace.h>
@@ -78,9 +84,14 @@ extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
 /* Lazy FPU handling on uni-processor */
 extern struct task_struct *last_task_used_math;
 extern struct task_struct *last_task_used_altivec;
+extern struct task_struct *last_task_used_vsx;
 extern struct task_struct *last_task_used_spe;
 
 #ifdef CONFIG_PPC32
+
+#if CONFIG_TASK_SIZE > CONFIG_KERNEL_START
+#error User TASK_SIZE overlaps with KERNEL_START address
+#endif
 #define TASK_SIZE       (CONFIG_TASK_SIZE)
 
 /* This decides where the kernel will search for a free chunk of vm
@@ -136,6 +147,10 @@ typedef struct {
         unsigned long seg;
 } mm_segment_t;
 
+#define TS_FPROFFSET 0
+#define TS_VSRLOWOFFSET 1
+#define TS_FPR(i) fpr[i][TS_FPROFFSET]
+
 struct thread_struct {
         unsigned long   ksp;            /* Kernel stack pointer */
         unsigned long   ksp_limit;      /* if ksp <= ksp_limit stack overflow */
@@ -152,8 +167,9 @@ struct thread_struct {
         unsigned long   dbcr0;          /* debug control register values */
         unsigned long   dbcr1;
 #endif
-        double          fpr[32];        /* Complete floating point set */
-        struct {                        /* fpr ... fpscr must be contiguous */
+        /* FP and VSX 0-31 register set */
+        double          fpr[32][TS_FPRWIDTH];
+        struct {
 
                 unsigned int pad;
                 unsigned int val;       /* Floating point status */
@@ -173,6 +189,10 @@ struct thread_struct {
         unsigned long   vrsave;
         int             used_vr;        /* set if process has used altivec */
 #endif /* CONFIG_ALTIVEC */
+#ifdef CONFIG_VSX
+        /* VSR status */
+        int             used_vsr;       /* set if process has used altivec */
+#endif /* CONFIG_VSX */
 #ifdef CONFIG_SPE
         unsigned long   evr[32];        /* upper 32-bits of SPE regs */
         u64             acc;            /* Accumulator */
@@ -202,7 +222,7 @@ struct thread_struct {
         .ksp_limit = INIT_SP_LIMIT, \
         .regs = (struct pt_regs *)INIT_SP - 1, /* XXX bogus, I think */ \
         .fs = KERNEL_DS, \
-        .fpr = {0}, \
+        .fpr = {{0}}, \
         .fpscr = { .val = 0, }, \
         .fpexc_mode = 0, \
 }
@@ -214,6 +234,8 @@ struct thread_struct {
 #define thread_saved_pc(tsk)    \
         ((tsk)->thread.regs? (tsk)->thread.regs->nip: 0)
 
+#define task_pt_regs(tsk)       ((struct pt_regs *)(tsk)->thread.regs)
+
 unsigned long get_wchan(struct task_struct *p);
 
 #define KSTK_EIP(tsk)  ((tsk)->thread.regs? (tsk)->thread.regs->nip: 0)