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-rw-r--r--include/asm-powerpc/processor.h28
1 files changed, 25 insertions, 3 deletions
diff --git a/include/asm-powerpc/processor.h b/include/asm-powerpc/processor.h
index cf83f2d7e2a..101ed87f7d8 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)